# Module libvirt from libvirt

Provides the interfaces of the libvirt library to handle virtualized domains Copyright (C) 2005-2006, 2010-2014 Red Hat, Inc. This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library. If not, see http://www.gnu.org/licenses/.

## Table of Contents

### Macros

    #define LIBVIR_CHECK_VERSION
    #define LIBVIR_VERSION_NUMBER
    #define VIR_COPY_CPUMAP
    #define VIR_CPU_MAPLEN
    #define VIR_CPU_USABLE
    #define VIR_CPU_USED
    #define VIR_DOMAIN_BANDWIDTH_IN_AVERAGE
    #define VIR_DOMAIN_BANDWIDTH_IN_BURST
    #define VIR_DOMAIN_BANDWIDTH_IN_PEAK
    #define VIR_DOMAIN_BANDWIDTH_OUT_AVERAGE
    #define VIR_DOMAIN_BANDWIDTH_OUT_BURST
    #define VIR_DOMAIN_BANDWIDTH_OUT_PEAK
    #define VIR_DOMAIN_BLKIO_DEVICE_READ_BPS
    #define VIR_DOMAIN_BLKIO_DEVICE_READ_IOPS
    #define VIR_DOMAIN_BLKIO_DEVICE_WEIGHT
    #define VIR_DOMAIN_BLKIO_DEVICE_WRITE_BPS
    #define VIR_DOMAIN_BLKIO_DEVICE_WRITE_IOPS
    #define VIR_DOMAIN_BLKIO_FIELD_LENGTH
    #define VIR_DOMAIN_BLKIO_WEIGHT
    #define VIR_DOMAIN_BLOCK_COPY_BANDWIDTH
    #define VIR_DOMAIN_BLOCK_COPY_BUF_SIZE
    #define VIR_DOMAIN_BLOCK_COPY_GRANULARITY
    #define VIR_DOMAIN_BLOCK_IOTUNE_READ_BYTES_SEC
    #define VIR_DOMAIN_BLOCK_IOTUNE_READ_IOPS_SEC
    #define VIR_DOMAIN_BLOCK_IOTUNE_TOTAL_BYTES_SEC
    #define VIR_DOMAIN_BLOCK_IOTUNE_TOTAL_IOPS_SEC
    #define VIR_DOMAIN_BLOCK_IOTUNE_WRITE_BYTES_SEC
    #define VIR_DOMAIN_BLOCK_IOTUNE_WRITE_IOPS_SEC
    #define VIR_DOMAIN_BLOCK_STATS_ERRS
    #define VIR_DOMAIN_BLOCK_STATS_FIELD_LENGTH
    #define VIR_DOMAIN_BLOCK_STATS_FLUSH_REQ
    #define VIR_DOMAIN_BLOCK_STATS_FLUSH_TOTAL_TIMES
    #define VIR_DOMAIN_BLOCK_STATS_READ_BYTES
    #define VIR_DOMAIN_BLOCK_STATS_READ_REQ
    #define VIR_DOMAIN_BLOCK_STATS_READ_TOTAL_TIMES
    #define VIR_DOMAIN_BLOCK_STATS_WRITE_BYTES
    #define VIR_DOMAIN_BLOCK_STATS_WRITE_REQ
    #define VIR_DOMAIN_BLOCK_STATS_WRITE_TOTAL_TIMES
    #define VIR_DOMAIN_CPU_STATS_CPUTIME
    #define VIR_DOMAIN_CPU_STATS_SYSTEMTIME
    #define VIR_DOMAIN_CPU_STATS_USERTIME
    #define VIR_DOMAIN_CPU_STATS_VCPUTIME
    #define VIR_DOMAIN_EVENT_CALLBACK
    #define VIR_DOMAIN_JOB_COMPRESSION_BYTES
    #define VIR_DOMAIN_JOB_COMPRESSION_CACHE
    #define VIR_DOMAIN_JOB_COMPRESSION_CACHE_MISSES
    #define VIR_DOMAIN_JOB_COMPRESSION_OVERFLOW
    #define VIR_DOMAIN_JOB_COMPRESSION_PAGES
    #define VIR_DOMAIN_JOB_DATA_PROCESSED
    #define VIR_DOMAIN_JOB_DATA_REMAINING
    #define VIR_DOMAIN_JOB_DATA_TOTAL
    #define VIR_DOMAIN_JOB_DISK_BPS
    #define VIR_DOMAIN_JOB_DISK_PROCESSED
    #define VIR_DOMAIN_JOB_DISK_REMAINING
    #define VIR_DOMAIN_JOB_DISK_TOTAL
    #define VIR_DOMAIN_JOB_DOWNTIME
    #define VIR_DOMAIN_JOB_MEMORY_BPS
    #define VIR_DOMAIN_JOB_MEMORY_CONSTANT
    #define VIR_DOMAIN_JOB_MEMORY_NORMAL
    #define VIR_DOMAIN_JOB_MEMORY_NORMAL_BYTES
    #define VIR_DOMAIN_JOB_MEMORY_PROCESSED
    #define VIR_DOMAIN_JOB_MEMORY_REMAINING
    #define VIR_DOMAIN_JOB_MEMORY_TOTAL
    #define VIR_DOMAIN_JOB_SETUP_TIME
    #define VIR_DOMAIN_JOB_TIME_ELAPSED
    #define VIR_DOMAIN_JOB_TIME_REMAINING
    #define VIR_DOMAIN_MEMORY_FIELD_LENGTH
    #define VIR_DOMAIN_MEMORY_HARD_LIMIT
    #define VIR_DOMAIN_MEMORY_MIN_GUARANTEE
    #define VIR_DOMAIN_MEMORY_PARAM_UNLIMITED
    #define VIR_DOMAIN_MEMORY_SOFT_LIMIT
    #define VIR_DOMAIN_MEMORY_SWAP_HARD_LIMIT
    #define VIR_DOMAIN_NUMA_MODE
    #define VIR_DOMAIN_NUMA_NODESET
    #define VIR_DOMAIN_SCHEDULER_CAP
    #define VIR_DOMAIN_SCHEDULER_CPU_SHARES
    #define VIR_DOMAIN_SCHEDULER_EMULATOR_PERIOD
    #define VIR_DOMAIN_SCHEDULER_EMULATOR_QUOTA
    #define VIR_DOMAIN_SCHEDULER_LIMIT
    #define VIR_DOMAIN_SCHEDULER_RESERVATION
    #define VIR_DOMAIN_SCHEDULER_SHARES
    #define VIR_DOMAIN_SCHEDULER_VCPU_PERIOD
    #define VIR_DOMAIN_SCHEDULER_VCPU_QUOTA
    #define VIR_DOMAIN_SCHEDULER_WEIGHT
    #define VIR_DOMAIN_SCHED_FIELD_LENGTH
    #define VIR_DOMAIN_SEND_KEY_MAX_KEYS
    #define VIR_DOMAIN_TUNABLE_BLKDEV_DISK
    #define VIR_DOMAIN_TUNABLE_BLKDEV_READ_BYTES_SEC
    #define VIR_DOMAIN_TUNABLE_BLKDEV_READ_IOPS_SEC
    #define VIR_DOMAIN_TUNABLE_BLKDEV_TOTAL_BYTES_SEC
    #define VIR_DOMAIN_TUNABLE_BLKDEV_TOTAL_IOPS_SEC
    #define VIR_DOMAIN_TUNABLE_BLKDEV_WRITE_BYTES_SEC
    #define VIR_DOMAIN_TUNABLE_BLKDEV_WRITE_IOPS_SEC
    #define VIR_DOMAIN_TUNABLE_CPU_CPU_SHARES
    #define VIR_DOMAIN_TUNABLE_CPU_EMULATORPIN
    #define VIR_DOMAIN_TUNABLE_CPU_EMULATOR_PERIOD
    #define VIR_DOMAIN_TUNABLE_CPU_EMULATOR_QUOTA
    #define VIR_DOMAIN_TUNABLE_CPU_VCPUPIN
    #define VIR_DOMAIN_TUNABLE_CPU_VCPU_PERIOD
    #define VIR_DOMAIN_TUNABLE_CPU_VCPU_QUOTA
    #define VIR_GET_CPUMAP
    #define VIR_MIGRATE_PARAM_BANDWIDTH
    #define VIR_MIGRATE_PARAM_DEST_NAME
    #define VIR_MIGRATE_PARAM_DEST_XML
    #define VIR_MIGRATE_PARAM_GRAPHICS_URI
    #define VIR_MIGRATE_PARAM_LISTEN_ADDRESS
    #define VIR_MIGRATE_PARAM_URI
    #define VIR_NETWORK_EVENT_CALLBACK
    #define VIR_NODEINFO_MAXCPUS
    #define VIR_NODE_CPU_STATS_FIELD_LENGTH
    #define VIR_NODE_CPU_STATS_IDLE
    #define VIR_NODE_CPU_STATS_INTR
    #define VIR_NODE_CPU_STATS_IOWAIT
    #define VIR_NODE_CPU_STATS_KERNEL
    #define VIR_NODE_CPU_STATS_USER
    #define VIR_NODE_CPU_STATS_UTILIZATION
    #define VIR_NODE_MEMORY_STATS_BUFFERS
    #define VIR_NODE_MEMORY_STATS_CACHED
    #define VIR_NODE_MEMORY_STATS_FIELD_LENGTH
    #define VIR_NODE_MEMORY_STATS_FREE
    #define VIR_NODE_MEMORY_STATS_TOTAL
    #define VIR_SECURITY_DOI_BUFLEN
    #define VIR_SECURITY_LABEL_BUFLEN
    #define VIR_SECURITY_MODEL_BUFLEN
    #define VIR_TYPED_PARAM_FIELD_LENGTH
    #define VIR_UNUSE_CPU
    #define VIR_USE_CPU
    #define VIR_UUID_BUFLEN
    #define VIR_UUID_STRING_BUFLEN
    #define _virBlkioParameter
    #define _virMemoryParameter
    #define _virSchedParameter

### Types

    typedef struct _virTypedParameter virBlkioParameter
    typedef virBlkioParameter * virBlkioParameterPtr
    typedef enum virBlkioParameterType
    typedef enum virCPUCompareResult
    typedef struct _virConnect virConnect
    typedef struct _virConnectAuth virConnectAuth
    typedef virConnectAuth * virConnectAuthPtr
    typedef enum virConnectBaselineCPUFlags
    typedef enum virConnectCloseReason
    typedef enum virConnectCompareCPUFlags
    typedef struct _virConnectCredential virConnectCredential
    typedef virConnectCredential * virConnectCredentialPtr
    typedef enum virConnectCredentialType
    typedef enum virConnectDomainEventBlockJobStatus
    typedef enum virConnectDomainEventDiskChangeReason
    typedef enum virConnectFlags
    typedef enum virConnectGetAllDomainStatsFlags
    typedef enum virConnectListAllDomainsFlags
    typedef enum virConnectListAllInterfacesFlags
    typedef enum virConnectListAllNetworksFlags
    typedef enum virConnectListAllNodeDeviceFlags
    typedef enum virConnectListAllSecretsFlags
    typedef enum virConnectListAllStoragePoolsFlags
    typedef virConnect * virConnectPtr
    typedef struct _virDomain virDomain
    typedef enum virDomainBlockCommitFlags
    typedef enum virDomainBlockCopyFlags
    typedef struct _virDomainBlockInfo virDomainBlockInfo
    typedef virDomainBlockInfo * virDomainBlockInfoPtr
    typedef enum virDomainBlockJobAbortFlags
    typedef unsigned long long virDomainBlockJobCursor
    typedef struct _virDomainBlockJobInfo virDomainBlockJobInfo
    typedef enum virDomainBlockJobInfoFlags
    typedef virDomainBlockJobInfo * virDomainBlockJobInfoPtr
    typedef enum virDomainBlockJobSetSpeedFlags
    typedef enum virDomainBlockJobType
    typedef enum virDomainBlockPullFlags
    typedef enum virDomainBlockRebaseFlags
    typedef enum virDomainBlockResizeFlags
    typedef virDomainBlockStatsStruct * virDomainBlockStatsPtr
    typedef struct _virDomainBlockStats virDomainBlockStatsStruct
    typedef enum virDomainBlockedReason
    typedef enum virDomainChannelFlags
    typedef enum virDomainConsoleFlags
    typedef struct _virDomainControlInfo virDomainControlInfo
    typedef virDomainControlInfo * virDomainControlInfoPtr
    typedef enum virDomainControlState
    typedef enum virDomainCoreDumpFlags
    typedef enum virDomainCoreDumpFormat
    typedef enum virDomainCrashedReason
    typedef enum virDomainCreateFlags
    typedef enum virDomainDestroyFlagsValues
    typedef enum virDomainDeviceModifyFlags
    typedef struct _virDomainDiskError virDomainDiskError
    typedef enum virDomainDiskErrorCode
    typedef virDomainDiskError * virDomainDiskErrorPtr
    typedef enum virDomainEventCrashedDetailType
    typedef enum virDomainEventDefinedDetailType
    typedef struct _virDomainEventGraphicsAddress virDomainEventGraphicsAddress
    typedef virDomainEventGraphicsAddress * virDomainEventGraphicsAddressPtr
    typedef enum virDomainEventGraphicsAddressType
    typedef enum virDomainEventGraphicsPhase
    typedef struct _virDomainEventGraphicsSubject virDomainEventGraphicsSubject
    typedef struct _virDomainEventGraphicsSubjectIdentity virDomainEventGraphicsSubjectIdentity
    typedef virDomainEventGraphicsSubjectIdentity * virDomainEventGraphicsSubjectIdentityPtr
    typedef virDomainEventGraphicsSubject * virDomainEventGraphicsSubjectPtr
    typedef enum virDomainEventID
    typedef enum virDomainEventIOErrorAction
    typedef enum virDomainEventPMSuspendedDetailType
    typedef enum virDomainEventResumedDetailType
    typedef enum virDomainEventShutdownDetailType
    typedef enum virDomainEventStartedDetailType
    typedef enum virDomainEventStoppedDetailType
    typedef enum virDomainEventSuspendedDetailType
    typedef enum virDomainEventTrayChangeReason
    typedef enum virDomainEventType
    typedef enum virDomainEventUndefinedDetailType
    typedef enum virDomainEventWatchdogAction
    typedef enum virDomainGetJobStatsFlags
    typedef struct _virDomainInfo virDomainInfo
    typedef virDomainInfo * virDomainInfoPtr
    typedef virDomainInterfaceStatsStruct * virDomainInterfaceStatsPtr
    typedef struct _virDomainInterfaceStats virDomainInterfaceStatsStruct
    typedef struct _virDomainJobInfo virDomainJobInfo
    typedef virDomainJobInfo * virDomainJobInfoPtr
    typedef enum virDomainJobType
    typedef enum virDomainMemoryFlags
    typedef enum virDomainMemoryModFlags
    typedef virDomainMemoryStatStruct * virDomainMemoryStatPtr
    typedef struct _virDomainMemoryStat virDomainMemoryStatStruct
    typedef enum virDomainMemoryStatTags
    typedef enum virDomainMetadataType
    typedef enum virDomainMigrateFlags
    typedef enum virDomainModificationImpact
    typedef enum virDomainNostateReason
    typedef enum virDomainNumatuneMemMode
    typedef enum virDomainOpenGraphicsFlags
    typedef enum virDomainPMSuspendedDiskReason
    typedef enum virDomainPMSuspendedReason
    typedef enum virDomainPausedReason
    typedef enum virDomainProcessSignal
    typedef virDomain * virDomainPtr
    typedef enum virDomainRebootFlagValues
    typedef enum virDomainRunningReason
    typedef enum virDomainSaveRestoreFlags
    typedef enum virDomainSetTimeFlags
    typedef enum virDomainShutdownFlagValues
    typedef enum virDomainShutdownReason
    typedef enum virDomainShutoffReason
    typedef struct _virDomainSnapshot virDomainSnapshot
    typedef enum virDomainSnapshotCreateFlags
    typedef enum virDomainSnapshotDeleteFlags
    typedef enum virDomainSnapshotListFlags
    typedef virDomainSnapshot * virDomainSnapshotPtr
    typedef enum virDomainSnapshotRevertFlags
    typedef enum virDomainState
    typedef struct _virDomainStatsRecord virDomainStatsRecord
    typedef virDomainStatsRecord * virDomainStatsRecordPtr
    typedef enum virDomainStatsTypes
    typedef enum virDomainUndefineFlagsValues
    typedef enum virDomainVcpuFlags
    typedef enum virDomainXMLFlags
    typedef enum virEventHandleType
    typedef enum virIPAddrType
    typedef struct _virInterface virInterface
    typedef virInterface * virInterfacePtr
    typedef enum virInterfaceXMLFlags
    typedef enum virKeycodeSet
    typedef struct _virTypedParameter virMemoryParameter
    typedef virMemoryParameter * virMemoryParameterPtr
    typedef enum virMemoryParameterType
    typedef struct _virNWFilter virNWFilter
    typedef virNWFilter * virNWFilterPtr
    typedef struct _virNetwork virNetwork
    typedef struct _virNetworkDHCPLease virNetworkDHCPLease
    typedef virNetworkDHCPLease * virNetworkDHCPLeasePtr
    typedef enum virNetworkEventID
    typedef enum virNetworkEventLifecycleType
    typedef virNetwork * virNetworkPtr
    typedef enum virNetworkUpdateCommand
    typedef enum virNetworkUpdateFlags
    typedef enum virNetworkUpdateSection
    typedef enum virNetworkXMLFlags
    typedef enum virNodeAllocPagesFlags
    typedef struct _virNodeCPUStats virNodeCPUStats
    typedef virNodeCPUStats * virNodeCPUStatsPtr
    typedef struct _virNodeDevice virNodeDevice
    typedef virNodeDevice * virNodeDevicePtr
    typedef enum virNodeGetCPUStatsAllCPUs
    typedef enum virNodeGetMemoryStatsAllCells
    typedef struct _virNodeInfo virNodeInfo
    typedef virNodeInfo * virNodeInfoPtr
    typedef struct _virNodeMemoryStats virNodeMemoryStats
    typedef virNodeMemoryStats * virNodeMemoryStatsPtr
    typedef enum virNodeSuspendTarget
    typedef struct _virTypedParameter virSchedParameter
    typedef virSchedParameter * virSchedParameterPtr
    typedef enum virSchedParameterType
    typedef struct _virSecret virSecret
    typedef virSecret * virSecretPtr
    typedef enum virSecretUsageType
    typedef struct _virSecurityLabel virSecurityLabel
    typedef virSecurityLabel * virSecurityLabelPtr
    typedef struct _virSecurityModel virSecurityModel
    typedef virSecurityModel * virSecurityModelPtr
    typedef struct _virStoragePool virStoragePool
    typedef enum virStoragePoolBuildFlags
    typedef enum virStoragePoolDeleteFlags
    typedef struct _virStoragePoolInfo virStoragePoolInfo
    typedef virStoragePoolInfo * virStoragePoolInfoPtr
    typedef virStoragePool * virStoragePoolPtr
    typedef enum virStoragePoolState
    typedef struct _virStorageVol virStorageVol
    typedef enum virStorageVolCreateFlags
    typedef enum virStorageVolDeleteFlags
    typedef struct _virStorageVolInfo virStorageVolInfo
    typedef virStorageVolInfo * virStorageVolInfoPtr
    typedef virStorageVol * virStorageVolPtr
    typedef enum virStorageVolResizeFlags
    typedef enum virStorageVolType
    typedef enum virStorageVolWipeAlgorithm
    typedef enum virStorageXMLFlags
    typedef struct _virStream virStream
    typedef enum virStreamEventType
    typedef enum virStreamFlags
    typedef virStream * virStreamPtr
    typedef struct _virTypedParameter virTypedParameter
    typedef enum virTypedParameterFlags
    typedef virTypedParameter * virTypedParameterPtr
    typedef enum virTypedParameterType
    typedef struct _virVcpuInfo virVcpuInfo
    typedef virVcpuInfo * virVcpuInfoPtr
    typedef enum virVcpuState

### Functions

    typedef virConnectAuthCallbackPtr
    int	virConnectAuthCallbackPtr	(virConnectCredentialPtr cred,
    					 unsigned int ncred,
    					 void * cbdata)

    char *	virConnectBaselineCPU		(virConnectPtr conn,
    					 const char ** xmlCPUs,
    					 unsigned int ncpus,
    					 unsigned int flags)
    int	virConnectClose			(virConnectPtr conn)
    typedef virConnectCloseFunc
    void	virConnectCloseFunc		(virConnectPtr conn,
    					 int reason,
    					 void * opaque)

    int	virConnectCompareCPU		(virConnectPtr conn,
    					 const char * xmlDesc,
    					 unsigned int flags)
    typedef virConnectDomainEventBalloonChangeCallback
    void	virConnectDomainEventBalloonChangeCallback	(virConnectPtr conn,
    							 virDomainPtr dom,
    							 unsigned long long actual,
    							 void * opaque)

    typedef virConnectDomainEventBlockJobCallback
    void	virConnectDomainEventBlockJobCallback	(virConnectPtr conn,
    						 virDomainPtr dom,
    						 const char * disk,
    						 int type,
    						 int status,
    						 void * opaque)

    typedef virConnectDomainEventCallback
    int	virConnectDomainEventCallback	(virConnectPtr conn,
    					 virDomainPtr dom,
    					 int event,
    					 int detail,
    					 void * opaque)

    int	virConnectDomainEventDeregister	(virConnectPtr conn,
    					 virConnectDomainEventCallback cb)
    int	virConnectDomainEventDeregisterAny	(virConnectPtr conn,
    						 int callbackID)
    typedef virConnectDomainEventDeviceRemovedCallback
    void	virConnectDomainEventDeviceRemovedCallback	(virConnectPtr conn,
    							 virDomainPtr dom,
    							 const char * devAlias,
    							 void * opaque)

    typedef virConnectDomainEventDiskChangeCallback
    void	virConnectDomainEventDiskChangeCallback	(virConnectPtr conn,
    						 virDomainPtr dom,
    						 const char * oldSrcPath,
    						 const char * newSrcPath,
    						 const char * devAlias,
    						 int reason,
    						 void * opaque)

    typedef virConnectDomainEventGenericCallback
    void	virConnectDomainEventGenericCallback	(virConnectPtr conn,
    						 virDomainPtr dom,
    						 void * opaque)

    typedef virConnectDomainEventGraphicsCallback
    void	virConnectDomainEventGraphicsCallback	(virConnectPtr conn,
    						 virDomainPtr dom,
    						 int phase,
    						 const virDomainEventGraphicsAddress * local,
    						 const virDomainEventGraphicsAddress * remote,
    						 const char * authScheme,
    						 const virDomainEventGraphicsSubject * subject,
    						 void * opaque)

    typedef virConnectDomainEventIOErrorCallback
    void	virConnectDomainEventIOErrorCallback	(virConnectPtr conn,
    						 virDomainPtr dom,
    						 const char * srcPath,
    						 const char * devAlias,
    						 int action,
    						 void * opaque)

    typedef virConnectDomainEventIOErrorReasonCallback
    void	virConnectDomainEventIOErrorReasonCallback	(virConnectPtr conn,
    							 virDomainPtr dom,
    							 const char * srcPath,
    							 const char * devAlias,
    							 int action,
    							 const char * reason,
    							 void * opaque)

    typedef virConnectDomainEventPMSuspendCallback
    void	virConnectDomainEventPMSuspendCallback	(virConnectPtr conn,
    						 virDomainPtr dom,
    						 int reason,
    						 void * opaque)

    typedef virConnectDomainEventPMSuspendDiskCallback
    void	virConnectDomainEventPMSuspendDiskCallback	(virConnectPtr conn,
    							 virDomainPtr dom,
    							 int reason,
    							 void * opaque)

    typedef virConnectDomainEventPMWakeupCallback
    void	virConnectDomainEventPMWakeupCallback	(virConnectPtr conn,
    						 virDomainPtr dom,
    						 int reason,
    						 void * opaque)

    typedef virConnectDomainEventRTCChangeCallback
    void	virConnectDomainEventRTCChangeCallback	(virConnectPtr conn,
    						 virDomainPtr dom,
    						 long long utcoffset,
    						 void * opaque)

    int	virConnectDomainEventRegister	(virConnectPtr conn,
    					 virConnectDomainEventCallback cb,
    					 void * opaque,
    					 virFreeCallback freecb)
    int	virConnectDomainEventRegisterAny	(virConnectPtr conn,
    						 virDomainPtr dom,
    						 int eventID,
    						 virConnectDomainEventGenericCallback cb,
    						 void * opaque,
    						 virFreeCallback freecb)
    typedef virConnectDomainEventTrayChangeCallback
    void	virConnectDomainEventTrayChangeCallback	(virConnectPtr conn,
    						 virDomainPtr dom,
    						 const char * devAlias,
    						 int reason,
    						 void * opaque)

    typedef virConnectDomainEventTunableCallback
    void	virConnectDomainEventTunableCallback	(virConnectPtr conn,
    						 virDomainPtr dom,
    						 virTypedParameterPtr params,
    						 int nparams,
    						 void * opaque)

    typedef virConnectDomainEventWatchdogCallback
    void	virConnectDomainEventWatchdogCallback	(virConnectPtr conn,
    						 virDomainPtr dom,
    						 int action,
    						 void * opaque)

    char *	virConnectDomainXMLFromNative	(virConnectPtr conn,
    					 const char * nativeFormat,
    					 const char * nativeConfig,
    					 unsigned int flags)
    char *	virConnectDomainXMLToNative	(virConnectPtr conn,
    					 const char * nativeFormat,
    					 const char * domainXml,
    					 unsigned int flags)
    char *	virConnectFindStoragePoolSources	(virConnectPtr conn,
    						 const char * type,
    						 const char * srcSpec,
    						 unsigned int flags)
    int	virConnectGetAllDomainStats	(virConnectPtr conn,
    					 unsigned int stats,
    					 virDomainStatsRecordPtr ** retStats,
    					 unsigned int flags)
    int	virConnectGetCPUModelNames	(virConnectPtr conn,
    					 const char * arch,
    					 char ** * models,
    					 unsigned int flags)
    char *	virConnectGetCapabilities	(virConnectPtr conn)
    char *	virConnectGetDomainCapabilities	(virConnectPtr conn,
    					 const char * emulatorbin,
    					 const char * arch,
    					 const char * machine,
    					 const char * virttype,
    					 unsigned int flags)
    char *	virConnectGetHostname		(virConnectPtr conn)
    int	virConnectGetLibVersion		(virConnectPtr conn,
    					 unsigned long * libVer)
    int	virConnectGetMaxVcpus		(virConnectPtr conn,
    					 const char * type)
    char *	virConnectGetSysinfo		(virConnectPtr conn,
    					 unsigned int flags)
    const char *	virConnectGetType	(virConnectPtr conn)
    char *	virConnectGetURI		(virConnectPtr conn)
    int	virConnectGetVersion		(virConnectPtr conn,
    					 unsigned long * hvVer)
    int	virConnectIsAlive		(virConnectPtr conn)
    int	virConnectIsEncrypted		(virConnectPtr conn)
    int	virConnectIsSecure		(virConnectPtr conn)
    int	virConnectListAllDomains	(virConnectPtr conn,
    					 virDomainPtr ** domains,
    					 unsigned int flags)
    int	virConnectListAllInterfaces	(virConnectPtr conn,
    					 virInterfacePtr ** ifaces,
    					 unsigned int flags)
    int	virConnectListAllNWFilters	(virConnectPtr conn,
    					 virNWFilterPtr ** filters,
    					 unsigned int flags)
    int	virConnectListAllNetworks	(virConnectPtr conn,
    					 virNetworkPtr ** nets,
    					 unsigned int flags)
    int	virConnectListAllNodeDevices	(virConnectPtr conn,
    					 virNodeDevicePtr ** devices,
    					 unsigned int flags)
    int	virConnectListAllSecrets	(virConnectPtr conn,
    					 virSecretPtr ** secrets,
    					 unsigned int flags)
    int	virConnectListAllStoragePools	(virConnectPtr conn,
    					 virStoragePoolPtr ** pools,
    					 unsigned int flags)
    int	virConnectListDefinedDomains	(virConnectPtr conn,
    					 char ** const names,
    					 int maxnames)
    int	virConnectListDefinedInterfaces	(virConnectPtr conn,
    					 char ** const names,
    					 int maxnames)
    int	virConnectListDefinedNetworks	(virConnectPtr conn,
    					 char ** const names,
    					 int maxnames)
    int	virConnectListDefinedStoragePools	(virConnectPtr conn,
    						 char ** const names,
    						 int maxnames)
    int	virConnectListDomains		(virConnectPtr conn,
    					 int * ids,
    					 int maxids)
    int	virConnectListInterfaces	(virConnectPtr conn,
    					 char ** const names,
    					 int maxnames)
    int	virConnectListNWFilters		(virConnectPtr conn,
    					 char ** const names,
    					 int maxnames)
    int	virConnectListNetworks		(virConnectPtr conn,
    					 char ** const names,
    					 int maxnames)
    int	virConnectListSecrets		(virConnectPtr conn,
    					 char ** uuids,
    					 int maxuuids)
    int	virConnectListStoragePools	(virConnectPtr conn,
    					 char ** const names,
    					 int maxnames)
    int	virConnectNetworkEventDeregisterAny	(virConnectPtr conn,
    						 int callbackID)
    typedef virConnectNetworkEventGenericCallback
    void	virConnectNetworkEventGenericCallback	(virConnectPtr conn,
    						 virNetworkPtr net,
    						 void * opaque)

    typedef virConnectNetworkEventLifecycleCallback
    void	virConnectNetworkEventLifecycleCallback	(virConnectPtr conn,
    						 virNetworkPtr net,
    						 int event,
    						 int detail,
    						 void * opaque)

    int	virConnectNetworkEventRegisterAny	(virConnectPtr conn,
    						 virNetworkPtr net,
    						 int eventID,
    						 virConnectNetworkEventGenericCallback cb,
    						 void * opaque,
    						 virFreeCallback freecb)
    int	virConnectNumOfDefinedDomains	(virConnectPtr conn)
    int	virConnectNumOfDefinedInterfaces	(virConnectPtr conn)
    int	virConnectNumOfDefinedNetworks	(virConnectPtr conn)
    int	virConnectNumOfDefinedStoragePools	(virConnectPtr conn)
    int	virConnectNumOfDomains		(virConnectPtr conn)
    int	virConnectNumOfInterfaces	(virConnectPtr conn)
    int	virConnectNumOfNWFilters	(virConnectPtr conn)
    int	virConnectNumOfNetworks		(virConnectPtr conn)
    int	virConnectNumOfSecrets		(virConnectPtr conn)
    int	virConnectNumOfStoragePools	(virConnectPtr conn)
    virConnectPtr	virConnectOpen		(const char * name)
    virConnectPtr	virConnectOpenAuth	(const char * name,
    					 virConnectAuthPtr auth,
    					 unsigned int flags)
    virConnectPtr	virConnectOpenReadOnly	(const char * name)
    int	virConnectRef			(virConnectPtr conn)
    int	virConnectRegisterCloseCallback	(virConnectPtr conn,
    					 virConnectCloseFunc cb,
    					 void * opaque,
    					 virFreeCallback freecb)
    int	virConnectSetKeepAlive		(virConnectPtr conn,
    					 int interval,
    					 unsigned int count)
    int	virConnectUnregisterCloseCallback	(virConnectPtr conn,
    						 virConnectCloseFunc cb)
    int	virDomainAbortJob		(virDomainPtr domain)
    int	virDomainAttachDevice		(virDomainPtr domain,
    					 const char * xml)
    int	virDomainAttachDeviceFlags	(virDomainPtr domain,
    					 const char * xml,
    					 unsigned int flags)
    int	virDomainBlockCommit		(virDomainPtr dom,
    					 const char * disk,
    					 const char * base,
    					 const char * top,
    					 unsigned long bandwidth,
    					 unsigned int flags)
    int	virDomainBlockCopy		(virDomainPtr dom,
    					 const char * disk,
    					 const char * destxml,
    					 virTypedParameterPtr params,
    					 int nparams,
    					 unsigned int flags)
    int	virDomainBlockJobAbort		(virDomainPtr dom,
    					 const char * disk,
    					 unsigned int flags)
    int	virDomainBlockJobSetSpeed	(virDomainPtr dom,
    					 const char * disk,
    					 unsigned long bandwidth,
    					 unsigned int flags)
    int	virDomainBlockPeek		(virDomainPtr dom,
    					 const char * disk,
    					 unsigned long long offset,
    					 size_t size,
    					 void * buffer,
    					 unsigned int flags)
    int	virDomainBlockPull		(virDomainPtr dom,
    					 const char * disk,
    					 unsigned long bandwidth,
    					 unsigned int flags)
    int	virDomainBlockRebase		(virDomainPtr dom,
    					 const char * disk,
    					 const char * base,
    					 unsigned long bandwidth,
    					 unsigned int flags)
    int	virDomainBlockResize		(virDomainPtr dom,
    					 const char * disk,
    					 unsigned long long size,
    					 unsigned int flags)
    int	virDomainBlockStats		(virDomainPtr dom,
    					 const char * disk,
    					 virDomainBlockStatsPtr stats,
    					 size_t size)
    int	virDomainBlockStatsFlags	(virDomainPtr dom,
    					 const char * disk,
    					 virTypedParameterPtr params,
    					 int * nparams,
    					 unsigned int flags)
    int	virDomainCoreDump		(virDomainPtr domain,
    					 const char * to,
    					 unsigned int flags)
    int	virDomainCoreDumpWithFormat	(virDomainPtr domain,
    					 const char * to,
    					 unsigned int dumpformat,
    					 unsigned int flags)
    int	virDomainCreate			(virDomainPtr domain)
    virDomainPtr	virDomainCreateLinux	(virConnectPtr conn,
    					 const char * xmlDesc,
    					 unsigned int flags)
    int	virDomainCreateWithFiles	(virDomainPtr domain,
    					 unsigned int nfiles,
    					 int * files,
    					 unsigned int flags)
    int	virDomainCreateWithFlags	(virDomainPtr domain,
    					 unsigned int flags)
    virDomainPtr	virDomainCreateXML	(virConnectPtr conn,
    					 const char * xmlDesc,
    					 unsigned int flags)
    virDomainPtr	virDomainCreateXMLWithFiles	(virConnectPtr conn,
    						 const char * xmlDesc,
    						 unsigned int nfiles,
    						 int * files,
    						 unsigned int flags)
    virDomainPtr	virDomainDefineXML	(virConnectPtr conn,
    					 const char * xml)
    int	virDomainDestroy		(virDomainPtr domain)
    int	virDomainDestroyFlags		(virDomainPtr domain,
    					 unsigned int flags)
    int	virDomainDetachDevice		(virDomainPtr domain,
    					 const char * xml)
    int	virDomainDetachDeviceFlags	(virDomainPtr domain,
    					 const char * xml,
    					 unsigned int flags)
    int	virDomainFSFreeze		(virDomainPtr dom,
    					 const char ** mountpoints,
    					 unsigned int nmountpoints,
    					 unsigned int flags)
    int	virDomainFSThaw			(virDomainPtr dom,
    					 const char ** mountpoints,
    					 unsigned int nmountpoints,
    					 unsigned int flags)
    int	virDomainFSTrim			(virDomainPtr dom,
    					 const char * mountPoint,
    					 unsigned long long minimum,
    					 unsigned int flags)
    int	virDomainFree			(virDomainPtr domain)
    int	virDomainGetAutostart		(virDomainPtr domain,
    					 int * autostart)
    int	virDomainGetBlkioParameters	(virDomainPtr domain,
    					 virTypedParameterPtr params,
    					 int * nparams,
    					 unsigned int flags)
    int	virDomainGetBlockInfo		(virDomainPtr domain,
    					 const char * disk,
    					 virDomainBlockInfoPtr info,
    					 unsigned int flags)
    int	virDomainGetBlockIoTune		(virDomainPtr dom,
    					 const char * disk,
    					 virTypedParameterPtr params,
    					 int * nparams,
    					 unsigned int flags)
    int	virDomainGetBlockJobInfo	(virDomainPtr dom,
    					 const char * disk,
    					 virDomainBlockJobInfoPtr info,
    					 unsigned int flags)
    int	virDomainGetCPUStats		(virDomainPtr domain,
    					 virTypedParameterPtr params,
    					 unsigned int nparams,
    					 int start_cpu,
    					 unsigned int ncpus,
    					 unsigned int flags)
    virConnectPtr	virDomainGetConnect	(virDomainPtr dom)
    int	virDomainGetControlInfo		(virDomainPtr domain,
    					 virDomainControlInfoPtr info,
    					 unsigned int flags)
    int	virDomainGetDiskErrors		(virDomainPtr dom,
    					 virDomainDiskErrorPtr errors,
    					 unsigned int maxerrors,
    					 unsigned int flags)
    int	virDomainGetEmulatorPinInfo	(virDomainPtr domain,
    					 unsigned char * cpumap,
    					 int maplen,
    					 unsigned int flags)
    char *	virDomainGetHostname		(virDomainPtr domain,
    					 unsigned int flags)
    unsigned int	virDomainGetID		(virDomainPtr domain)
    int	virDomainGetInfo		(virDomainPtr domain,
    					 virDomainInfoPtr info)
    int	virDomainGetInterfaceParameters	(virDomainPtr domain,
    					 const char * device,
    					 virTypedParameterPtr params,
    					 int * nparams,
    					 unsigned int flags)
    int	virDomainGetJobInfo		(virDomainPtr domain,
    					 virDomainJobInfoPtr info)
    int	virDomainGetJobStats		(virDomainPtr domain,
    					 int * type,
    					 virTypedParameterPtr * params,
    					 int * nparams,
    					 unsigned int flags)
    unsigned long	virDomainGetMaxMemory	(virDomainPtr domain)
    int	virDomainGetMaxVcpus		(virDomainPtr domain)
    int	virDomainGetMemoryParameters	(virDomainPtr domain,
    					 virTypedParameterPtr params,
    					 int * nparams,
    					 unsigned int flags)
    char *	virDomainGetMetadata		(virDomainPtr domain,
    					 int type,
    					 const char * uri,
    					 unsigned int flags)
    const char *	virDomainGetName	(virDomainPtr domain)
    int	virDomainGetNumaParameters	(virDomainPtr domain,
    					 virTypedParameterPtr params,
    					 int * nparams,
    					 unsigned int flags)
    char *	virDomainGetOSType		(virDomainPtr domain)
    int	virDomainGetSchedulerParameters	(virDomainPtr domain,
    					 virTypedParameterPtr params,
    					 int * nparams)
    int	virDomainGetSchedulerParametersFlags	(virDomainPtr domain,
    						 virTypedParameterPtr params,
    						 int * nparams,
    						 unsigned int flags)
    char *	virDomainGetSchedulerType	(virDomainPtr domain,
    					 int * nparams)
    int	virDomainGetSecurityLabel	(virDomainPtr domain,
    					 virSecurityLabelPtr seclabel)
    int	virDomainGetSecurityLabelList	(virDomainPtr domain,
    					 virSecurityLabelPtr * seclabels)
    int	virDomainGetState		(virDomainPtr domain,
    					 int * state,
    					 int * reason,
    					 unsigned int flags)
    int	virDomainGetTime		(virDomainPtr dom,
    					 long long * seconds,
    					 unsigned int * nseconds,
    					 unsigned int flags)
    int	virDomainGetUUID		(virDomainPtr domain,
    					 unsigned char * uuid)
    int	virDomainGetUUIDString		(virDomainPtr domain,
    					 char * buf)
    int	virDomainGetVcpuPinInfo		(virDomainPtr domain,
    					 int ncpumaps,
    					 unsigned char * cpumaps,
    					 int maplen,
    					 unsigned int flags)
    int	virDomainGetVcpus		(virDomainPtr domain,
    					 virVcpuInfoPtr info,
    					 int maxinfo,
    					 unsigned char * cpumaps,
    					 int maplen)
    int	virDomainGetVcpusFlags		(virDomainPtr domain,
    					 unsigned int flags)
    char *	virDomainGetXMLDesc		(virDomainPtr domain,
    					 unsigned int flags)
    int	virDomainHasCurrentSnapshot	(virDomainPtr domain,
    					 unsigned int flags)
    int	virDomainHasManagedSaveImage	(virDomainPtr dom,
    					 unsigned int flags)
    int	virDomainInjectNMI		(virDomainPtr domain,
    					 unsigned int flags)
    int	virDomainInterfaceStats		(virDomainPtr dom,
    					 const char * path,
    					 virDomainInterfaceStatsPtr stats,
    					 size_t size)
    int	virDomainIsActive		(virDomainPtr dom)
    int	virDomainIsPersistent		(virDomainPtr dom)
    int	virDomainIsUpdated		(virDomainPtr dom)
    int	virDomainListAllSnapshots	(virDomainPtr domain,
    					 virDomainSnapshotPtr ** snaps,
    					 unsigned int flags)
    int	virDomainListGetStats		(virDomainPtr * doms,
    					 unsigned int stats,
    					 virDomainStatsRecordPtr ** retStats,
    					 unsigned int flags)
    virDomainPtr	virDomainLookupByID	(virConnectPtr conn,
    					 int id)
    virDomainPtr	virDomainLookupByName	(virConnectPtr conn,
    					 const char * name)
    virDomainPtr	virDomainLookupByUUID	(virConnectPtr conn,
    					 const unsigned char * uuid)
    virDomainPtr	virDomainLookupByUUIDString	(virConnectPtr conn,
    						 const char * uuidstr)
    int	virDomainManagedSave		(virDomainPtr dom,
    					 unsigned int flags)
    int	virDomainManagedSaveRemove	(virDomainPtr dom,
    					 unsigned int flags)
    int	virDomainMemoryPeek		(virDomainPtr dom,
    					 unsigned long long start,
    					 size_t size,
    					 void * buffer,
    					 unsigned int flags)
    int	virDomainMemoryStats		(virDomainPtr dom,
    					 virDomainMemoryStatPtr stats,
    					 unsigned int nr_stats,
    					 unsigned int flags)
    virDomainPtr	virDomainMigrate	(virDomainPtr domain,
    					 virConnectPtr dconn,
    					 unsigned long flags,
    					 const char * dname,
    					 const char * uri,
    					 unsigned long bandwidth)
    virDomainPtr	virDomainMigrate2	(virDomainPtr domain,
    					 virConnectPtr dconn,
    					 const char * dxml,
    					 unsigned long flags,
    					 const char * dname,
    					 const char * uri,
    					 unsigned long bandwidth)
    virDomainPtr	virDomainMigrate3	(virDomainPtr domain,
    					 virConnectPtr dconn,
    					 virTypedParameterPtr params,
    					 unsigned int nparams,
    					 unsigned int flags)
    int	virDomainMigrateGetCompressionCache	(virDomainPtr domain,
    						 unsigned long long * cacheSize,
    						 unsigned int flags)
    int	virDomainMigrateGetMaxSpeed	(virDomainPtr domain,
    					 unsigned long * bandwidth,
    					 unsigned int flags)
    int	virDomainMigrateSetCompressionCache	(virDomainPtr domain,
    						 unsigned long long cacheSize,
    						 unsigned int flags)
    int	virDomainMigrateSetMaxDowntime	(virDomainPtr domain,
    					 unsigned long long downtime,
    					 unsigned int flags)
    int	virDomainMigrateSetMaxSpeed	(virDomainPtr domain,
    					 unsigned long bandwidth,
    					 unsigned int flags)
    int	virDomainMigrateToURI		(virDomainPtr domain,
    					 const char * duri,
    					 unsigned long flags,
    					 const char * dname,
    					 unsigned long bandwidth)
    int	virDomainMigrateToURI2		(virDomainPtr domain,
    					 const char * dconnuri,
    					 const char * miguri,
    					 const char * dxml,
    					 unsigned long flags,
    					 const char * dname,
    					 unsigned long bandwidth)
    int	virDomainMigrateToURI3		(virDomainPtr domain,
    					 const char * dconnuri,
    					 virTypedParameterPtr params,
    					 unsigned int nparams,
    					 unsigned int flags)
    int	virDomainOpenChannel		(virDomainPtr dom,
    					 const char * name,
    					 virStreamPtr st,
    					 unsigned int flags)
    int	virDomainOpenConsole		(virDomainPtr dom,
    					 const char * dev_name,
    					 virStreamPtr st,
    					 unsigned int flags)
    int	virDomainOpenGraphics		(virDomainPtr dom,
    					 unsigned int idx,
    					 int fd,
    					 unsigned int flags)
    int	virDomainOpenGraphicsFD		(virDomainPtr dom,
    					 unsigned int idx,
    					 unsigned int flags)
    int	virDomainPMSuspendForDuration	(virDomainPtr dom,
    					 unsigned int target,
    					 unsigned long long duration,
    					 unsigned int flags)
    int	virDomainPMWakeup		(virDomainPtr dom,
    					 unsigned int flags)
    int	virDomainPinEmulator		(virDomainPtr domain,
    					 unsigned char * cpumap,
    					 int maplen,
    					 unsigned int flags)
    int	virDomainPinVcpu		(virDomainPtr domain,
    					 unsigned int vcpu,
    					 unsigned char * cpumap,
    					 int maplen)
    int	virDomainPinVcpuFlags		(virDomainPtr domain,
    					 unsigned int vcpu,
    					 unsigned char * cpumap,
    					 int maplen,
    					 unsigned int flags)
    int	virDomainReboot			(virDomainPtr domain,
    					 unsigned int flags)
    int	virDomainRef			(virDomainPtr domain)
    int	virDomainReset			(virDomainPtr domain,
    					 unsigned int flags)
    int	virDomainRestore		(virConnectPtr conn,
    					 const char * from)
    int	virDomainRestoreFlags		(virConnectPtr conn,
    					 const char * from,
    					 const char * dxml,
    					 unsigned int flags)
    int	virDomainResume			(virDomainPtr domain)
    int	virDomainRevertToSnapshot	(virDomainSnapshotPtr snapshot,
    					 unsigned int flags)
    int	virDomainSave			(virDomainPtr domain,
    					 const char * to)
    int	virDomainSaveFlags		(virDomainPtr domain,
    					 const char * to,
    					 const char * dxml,
    					 unsigned int flags)
    int	virDomainSaveImageDefineXML	(virConnectPtr conn,
    					 const char * file,
    					 const char * dxml,
    					 unsigned int flags)
    char *	virDomainSaveImageGetXMLDesc	(virConnectPtr conn,
    					 const char * file,
    					 unsigned int flags)
    char *	virDomainScreenshot		(virDomainPtr domain,
    					 virStreamPtr stream,
    					 unsigned int screen,
    					 unsigned int flags)
    int	virDomainSendKey		(virDomainPtr domain,
    					 unsigned int codeset,
    					 unsigned int holdtime,
    					 unsigned int * keycodes,
    					 int nkeycodes,
    					 unsigned int flags)
    int	virDomainSendProcessSignal	(virDomainPtr domain,
    					 long long pid_value,
    					 unsigned int signum,
    					 unsigned int flags)
    int	virDomainSetAutostart		(virDomainPtr domain,
    					 int autostart)
    int	virDomainSetBlkioParameters	(virDomainPtr domain,
    					 virTypedParameterPtr params,
    					 int nparams,
    					 unsigned int flags)
    int	virDomainSetBlockIoTune		(virDomainPtr dom,
    					 const char * disk,
    					 virTypedParameterPtr params,
    					 int nparams,
    					 unsigned int flags)
    int	virDomainSetInterfaceParameters	(virDomainPtr domain,
    					 const char * device,
    					 virTypedParameterPtr params,
    					 int nparams,
    					 unsigned int flags)
    int	virDomainSetMaxMemory		(virDomainPtr domain,
    					 unsigned long memory)
    int	virDomainSetMemory		(virDomainPtr domain,
    					 unsigned long memory)
    int	virDomainSetMemoryFlags		(virDomainPtr domain,
    					 unsigned long memory,
    					 unsigned int flags)
    int	virDomainSetMemoryParameters	(virDomainPtr domain,
    					 virTypedParameterPtr params,
    					 int nparams,
    					 unsigned int flags)
    int	virDomainSetMemoryStatsPeriod	(virDomainPtr domain,
    					 int period,
    					 unsigned int flags)
    int	virDomainSetMetadata		(virDomainPtr domain,
    					 int type,
    					 const char * metadata,
    					 const char * key,
    					 const char * uri,
    					 unsigned int flags)
    int	virDomainSetNumaParameters	(virDomainPtr domain,
    					 virTypedParameterPtr params,
    					 int nparams,
    					 unsigned int flags)
    int	virDomainSetSchedulerParameters	(virDomainPtr domain,
    					 virTypedParameterPtr params,
    					 int nparams)
    int	virDomainSetSchedulerParametersFlags	(virDomainPtr domain,
    						 virTypedParameterPtr params,
    						 int nparams,
    						 unsigned int flags)
    int	virDomainSetTime		(virDomainPtr dom,
    					 long long seconds,
    					 unsigned int nseconds,
    					 unsigned int flags)
    int	virDomainSetVcpus		(virDomainPtr domain,
    					 unsigned int nvcpus)
    int	virDomainSetVcpusFlags		(virDomainPtr domain,
    					 unsigned int nvcpus,
    					 unsigned int flags)
    int	virDomainShutdown		(virDomainPtr domain)
    int	virDomainShutdownFlags		(virDomainPtr domain,
    					 unsigned int flags)
    virDomainSnapshotPtr	virDomainSnapshotCreateXML	(virDomainPtr domain,
    							 const char * xmlDesc,
    							 unsigned int flags)
    virDomainSnapshotPtr	virDomainSnapshotCurrent	(virDomainPtr domain,
    							 unsigned int flags)
    int	virDomainSnapshotDelete		(virDomainSnapshotPtr snapshot,
    					 unsigned int flags)
    int	virDomainSnapshotFree		(virDomainSnapshotPtr snapshot)
    virConnectPtr	virDomainSnapshotGetConnect	(virDomainSnapshotPtr snapshot)
    virDomainPtr	virDomainSnapshotGetDomain	(virDomainSnapshotPtr snapshot)
    const char *	virDomainSnapshotGetName	(virDomainSnapshotPtr snapshot)
    virDomainSnapshotPtr	virDomainSnapshotGetParent	(virDomainSnapshotPtr snapshot,
    							 unsigned int flags)
    char *	virDomainSnapshotGetXMLDesc	(virDomainSnapshotPtr snapshot,
    					 unsigned int flags)
    int	virDomainSnapshotHasMetadata	(virDomainSnapshotPtr snapshot,
    					 unsigned int flags)
    int	virDomainSnapshotIsCurrent	(virDomainSnapshotPtr snapshot,
    					 unsigned int flags)
    int	virDomainSnapshotListAllChildren	(virDomainSnapshotPtr snapshot,
    						 virDomainSnapshotPtr ** snaps,
    						 unsigned int flags)
    int	virDomainSnapshotListChildrenNames	(virDomainSnapshotPtr snapshot,
    						 char ** names,
    						 int nameslen,
    						 unsigned int flags)
    int	virDomainSnapshotListNames	(virDomainPtr domain,
    					 char ** names,
    					 int nameslen,
    					 unsigned int flags)
    virDomainSnapshotPtr	virDomainSnapshotLookupByName	(virDomainPtr domain,
    							 const char * name,
    							 unsigned int flags)
    int	virDomainSnapshotNum		(virDomainPtr domain,
    					 unsigned int flags)
    int	virDomainSnapshotNumChildren	(virDomainSnapshotPtr snapshot,
    					 unsigned int flags)
    int	virDomainSnapshotRef		(virDomainSnapshotPtr snapshot)
    void	virDomainStatsRecordListFree	(virDomainStatsRecordPtr * stats)
    int	virDomainSuspend		(virDomainPtr domain)
    int	virDomainUndefine		(virDomainPtr domain)
    int	virDomainUndefineFlags		(virDomainPtr domain,
    					 unsigned int flags)
    int	virDomainUpdateDeviceFlags	(virDomainPtr domain,
    					 const char * xml,
    					 unsigned int flags)
    int	virEventAddHandle		(int fd,
    					 int events,
    					 virEventHandleCallback cb,
    					 void * opaque,
    					 virFreeCallback ff)
    typedef virEventAddHandleFunc
    int	virEventAddHandleFunc		(int fd,
    					 int event,
    					 virEventHandleCallback cb,
    					 void * opaque,
    					 virFreeCallback ff)

    int	virEventAddTimeout		(int timeout,
    					 virEventTimeoutCallback cb,
    					 void * opaque,
    					 virFreeCallback ff)
    typedef virEventAddTimeoutFunc
    int	virEventAddTimeoutFunc		(int timeout,
    					 virEventTimeoutCallback cb,
    					 void * opaque,
    					 virFreeCallback ff)

    typedef virEventHandleCallback
    void	virEventHandleCallback		(int watch,
    					 int fd,
    					 int events,
    					 void * opaque)

    int	virEventRegisterDefaultImpl	(void)
    void	virEventRegisterImpl		(virEventAddHandleFunc addHandle,
    					 virEventUpdateHandleFunc updateHandle,
    					 virEventRemoveHandleFunc removeHandle,
    					 virEventAddTimeoutFunc addTimeout,
    					 virEventUpdateTimeoutFunc updateTimeout,
    					 virEventRemoveTimeoutFunc removeTimeout)
    int	virEventRemoveHandle		(int watch)
    typedef virEventRemoveHandleFunc
    int	virEventRemoveHandleFunc	(int watch)

    int	virEventRemoveTimeout		(int timer)
    typedef virEventRemoveTimeoutFunc
    int	virEventRemoveTimeoutFunc	(int timer)

    int	virEventRunDefaultImpl		(void)
    typedef virEventTimeoutCallback
    void	virEventTimeoutCallback		(int timer,
    					 void * opaque)

    void	virEventUpdateHandle		(int watch,
    					 int events)
    typedef virEventUpdateHandleFunc
    void	virEventUpdateHandleFunc	(int watch,
    					 int event)

    void	virEventUpdateTimeout		(int timer,
    					 int timeout)
    typedef virEventUpdateTimeoutFunc
    void	virEventUpdateTimeoutFunc	(int timer,
    					 int timeout)

    typedef virFreeCallback
    void	virFreeCallback			(void * opaque)

    int	virGetVersion			(unsigned long * libVer,
    					 const char * type,
    					 unsigned long * typeVer)
    int	virInitialize			(void)
    int	virInterfaceChangeBegin		(virConnectPtr conn,
    					 unsigned int flags)
    int	virInterfaceChangeCommit	(virConnectPtr conn,
    					 unsigned int flags)
    int	virInterfaceChangeRollback	(virConnectPtr conn,
    					 unsigned int flags)
    int	virInterfaceCreate		(virInterfacePtr iface,
    					 unsigned int flags)
    virInterfacePtr	virInterfaceDefineXML	(virConnectPtr conn,
    					 const char * xml,
    					 unsigned int flags)
    int	virInterfaceDestroy		(virInterfacePtr iface,
    					 unsigned int flags)
    int	virInterfaceFree		(virInterfacePtr iface)
    virConnectPtr	virInterfaceGetConnect	(virInterfacePtr iface)
    const char *	virInterfaceGetMACString	(virInterfacePtr iface)
    const char *	virInterfaceGetName	(virInterfacePtr iface)
    char *	virInterfaceGetXMLDesc		(virInterfacePtr iface,
    					 unsigned int flags)
    int	virInterfaceIsActive		(virInterfacePtr iface)
    virInterfacePtr	virInterfaceLookupByMACString	(virConnectPtr conn,
    						 const char * macstr)
    virInterfacePtr	virInterfaceLookupByName	(virConnectPtr conn,
    						 const char * name)
    int	virInterfaceRef			(virInterfacePtr iface)
    int	virInterfaceUndefine		(virInterfacePtr iface)
    virNWFilterPtr	virNWFilterDefineXML	(virConnectPtr conn,
    					 const char * xmlDesc)
    int	virNWFilterFree			(virNWFilterPtr nwfilter)
    const char *	virNWFilterGetName	(virNWFilterPtr nwfilter)
    int	virNWFilterGetUUID		(virNWFilterPtr nwfilter,
    					 unsigned char * uuid)
    int	virNWFilterGetUUIDString	(virNWFilterPtr nwfilter,
    					 char * buf)
    char *	virNWFilterGetXMLDesc		(virNWFilterPtr nwfilter,
    					 unsigned int flags)
    virNWFilterPtr	virNWFilterLookupByName	(virConnectPtr conn,
    					 const char * name)
    virNWFilterPtr	virNWFilterLookupByUUID	(virConnectPtr conn,
    					 const unsigned char * uuid)
    virNWFilterPtr	virNWFilterLookupByUUIDString	(virConnectPtr conn,
    						 const char * uuidstr)
    int	virNWFilterRef			(virNWFilterPtr nwfilter)
    int	virNWFilterUndefine		(virNWFilterPtr nwfilter)
    int	virNetworkCreate		(virNetworkPtr network)
    virNetworkPtr	virNetworkCreateXML	(virConnectPtr conn,
    					 const char * xmlDesc)
    void	virNetworkDHCPLeaseFree		(virNetworkDHCPLeasePtr lease)
    virNetworkPtr	virNetworkDefineXML	(virConnectPtr conn,
    					 const char * xml)
    int	virNetworkDestroy		(virNetworkPtr network)
    int	virNetworkFree			(virNetworkPtr network)
    int	virNetworkGetAutostart		(virNetworkPtr network,
    					 int * autostart)
    char *	virNetworkGetBridgeName		(virNetworkPtr network)
    virConnectPtr	virNetworkGetConnect	(virNetworkPtr net)
    int	virNetworkGetDHCPLeases		(virNetworkPtr network,
    					 const char * mac,
    					 virNetworkDHCPLeasePtr ** leases,
    					 unsigned int flags)
    const char *	virNetworkGetName	(virNetworkPtr network)
    int	virNetworkGetUUID		(virNetworkPtr network,
    					 unsigned char * uuid)
    int	virNetworkGetUUIDString		(virNetworkPtr network,
    					 char * buf)
    char *	virNetworkGetXMLDesc		(virNetworkPtr network,
    					 unsigned int flags)
    int	virNetworkIsActive		(virNetworkPtr net)
    int	virNetworkIsPersistent		(virNetworkPtr net)
    virNetworkPtr	virNetworkLookupByName	(virConnectPtr conn,
    					 const char * name)
    virNetworkPtr	virNetworkLookupByUUID	(virConnectPtr conn,
    					 const unsigned char * uuid)
    virNetworkPtr	virNetworkLookupByUUIDString	(virConnectPtr conn,
    						 const char * uuidstr)
    int	virNetworkRef			(virNetworkPtr network)
    int	virNetworkSetAutostart		(virNetworkPtr network,
    					 int autostart)
    int	virNetworkUndefine		(virNetworkPtr network)
    int	virNetworkUpdate		(virNetworkPtr network,
    					 unsigned int command,
    					 unsigned int section,
    					 int parentIndex,
    					 const char * xml,
    					 unsigned int flags)
    int	virNodeAllocPages		(virConnectPtr conn,
    					 unsigned int npages,
    					 unsigned int * pageSizes,
    					 unsigned long long * pageCounts,
    					 int startCell,
    					 unsigned int cellCount,
    					 unsigned int flags)
    virNodeDevicePtr	virNodeDeviceCreateXML	(virConnectPtr conn,
    						 const char * xmlDesc,
    						 unsigned int flags)
    int	virNodeDeviceDestroy		(virNodeDevicePtr dev)
    int	virNodeDeviceDetachFlags	(virNodeDevicePtr dev,
    					 const char * driverName,
    					 unsigned int flags)
    int	virNodeDeviceDettach		(virNodeDevicePtr dev)
    int	virNodeDeviceFree		(virNodeDevicePtr dev)
    const char *	virNodeDeviceGetName	(virNodeDevicePtr dev)
    const char *	virNodeDeviceGetParent	(virNodeDevicePtr dev)
    char *	virNodeDeviceGetXMLDesc		(virNodeDevicePtr dev,
    					 unsigned int flags)
    int	virNodeDeviceListCaps		(virNodeDevicePtr dev,
    					 char ** const names,
    					 int maxnames)
    virNodeDevicePtr	virNodeDeviceLookupByName	(virConnectPtr conn,
    							 const char * name)
    virNodeDevicePtr	virNodeDeviceLookupSCSIHostByWWN	(virConnectPtr conn,
    							 const char * wwnn,
    							 const char * wwpn,
    							 unsigned int flags)
    int	virNodeDeviceNumOfCaps		(virNodeDevicePtr dev)
    int	virNodeDeviceReAttach		(virNodeDevicePtr dev)
    int	virNodeDeviceRef		(virNodeDevicePtr dev)
    int	virNodeDeviceReset		(virNodeDevicePtr dev)
    int	virNodeGetCPUMap		(virConnectPtr conn,
    					 unsigned char ** cpumap,
    					 unsigned int * online,
    					 unsigned int flags)
    int	virNodeGetCPUStats		(virConnectPtr conn,
    					 int cpuNum,
    					 virNodeCPUStatsPtr params,
    					 int * nparams,
    					 unsigned int flags)
    int	virNodeGetCellsFreeMemory	(virConnectPtr conn,
    					 unsigned long long * freeMems,
    					 int startCell,
    					 int maxCells)
    unsigned long long	virNodeGetFreeMemory	(virConnectPtr conn)
    int	virNodeGetFreePages		(virConnectPtr conn,
    					 unsigned int npages,
    					 unsigned int * pages,
    					 int startCell,
    					 unsigned int cellCount,
    					 unsigned long long * counts,
    					 unsigned int flags)
    int	virNodeGetInfo			(virConnectPtr conn,
    					 virNodeInfoPtr info)
    int	virNodeGetMemoryParameters	(virConnectPtr conn,
    					 virTypedParameterPtr params,
    					 int * nparams,
    					 unsigned int flags)
    int	virNodeGetMemoryStats		(virConnectPtr conn,
    					 int cellNum,
    					 virNodeMemoryStatsPtr params,
    					 int * nparams,
    					 unsigned int flags)
    int	virNodeGetSecurityModel		(virConnectPtr conn,
    					 virSecurityModelPtr secmodel)
    int	virNodeListDevices		(virConnectPtr conn,
    					 const char * cap,
    					 char ** const names,
    					 int maxnames,
    					 unsigned int flags)
    int	virNodeNumOfDevices		(virConnectPtr conn,
    					 const char * cap,
    					 unsigned int flags)
    int	virNodeSetMemoryParameters	(virConnectPtr conn,
    					 virTypedParameterPtr params,
    					 int nparams,
    					 unsigned int flags)
    int	virNodeSuspendForDuration	(virConnectPtr conn,
    					 unsigned int target,
    					 unsigned long long duration,
    					 unsigned int flags)
    virSecretPtr	virSecretDefineXML	(virConnectPtr conn,
    					 const char * xml,
    					 unsigned int flags)
    int	virSecretFree			(virSecretPtr secret)
    virConnectPtr	virSecretGetConnect	(virSecretPtr secret)
    int	virSecretGetUUID		(virSecretPtr secret,
    					 unsigned char * uuid)
    int	virSecretGetUUIDString		(virSecretPtr secret,
    					 char * buf)
    const char *	virSecretGetUsageID	(virSecretPtr secret)
    int	virSecretGetUsageType		(virSecretPtr secret)
    unsigned char *	virSecretGetValue	(virSecretPtr secret,
    					 size_t * value_size,
    					 unsigned int flags)
    char *	virSecretGetXMLDesc		(virSecretPtr secret,
    					 unsigned int flags)
    virSecretPtr	virSecretLookupByUUID	(virConnectPtr conn,
    					 const unsigned char * uuid)
    virSecretPtr	virSecretLookupByUUIDString	(virConnectPtr conn,
    						 const char * uuidstr)
    virSecretPtr	virSecretLookupByUsage	(virConnectPtr conn,
    					 int usageType,
    					 const char * usageID)
    int	virSecretRef			(virSecretPtr secret)
    int	virSecretSetValue		(virSecretPtr secret,
    					 const unsigned char * value,
    					 size_t value_size,
    					 unsigned int flags)
    int	virSecretUndefine		(virSecretPtr secret)
    int	virStoragePoolBuild		(virStoragePoolPtr pool,
    					 unsigned int flags)
    int	virStoragePoolCreate		(virStoragePoolPtr pool,
    					 unsigned int flags)
    virStoragePoolPtr	virStoragePoolCreateXML	(virConnectPtr conn,
    						 const char * xmlDesc,
    						 unsigned int flags)
    virStoragePoolPtr	virStoragePoolDefineXML	(virConnectPtr conn,
    						 const char * xml,
    						 unsigned int flags)
    int	virStoragePoolDelete		(virStoragePoolPtr pool,
    					 unsigned int flags)
    int	virStoragePoolDestroy		(virStoragePoolPtr pool)
    int	virStoragePoolFree		(virStoragePoolPtr pool)
    int	virStoragePoolGetAutostart	(virStoragePoolPtr pool,
    					 int * autostart)
    virConnectPtr	virStoragePoolGetConnect	(virStoragePoolPtr pool)
    int	virStoragePoolGetInfo		(virStoragePoolPtr pool,
    					 virStoragePoolInfoPtr info)
    const char *	virStoragePoolGetName	(virStoragePoolPtr pool)
    int	virStoragePoolGetUUID		(virStoragePoolPtr pool,
    					 unsigned char * uuid)
    int	virStoragePoolGetUUIDString	(virStoragePoolPtr pool,
    					 char * buf)
    char *	virStoragePoolGetXMLDesc	(virStoragePoolPtr pool,
    					 unsigned int flags)
    int	virStoragePoolIsActive		(virStoragePoolPtr pool)
    int	virStoragePoolIsPersistent	(virStoragePoolPtr pool)
    int	virStoragePoolListAllVolumes	(virStoragePoolPtr pool,
    					 virStorageVolPtr ** vols,
    					 unsigned int flags)
    int	virStoragePoolListVolumes	(virStoragePoolPtr pool,
    					 char ** const names,
    					 int maxnames)
    virStoragePoolPtr	virStoragePoolLookupByName	(virConnectPtr conn,
    							 const char * name)
    virStoragePoolPtr	virStoragePoolLookupByUUID	(virConnectPtr conn,
    							 const unsigned char * uuid)
    virStoragePoolPtr	virStoragePoolLookupByUUIDString	(virConnectPtr conn,
    							 const char * uuidstr)
    virStoragePoolPtr	virStoragePoolLookupByVolume	(virStorageVolPtr vol)
    int	virStoragePoolNumOfVolumes	(virStoragePoolPtr pool)
    int	virStoragePoolRef		(virStoragePoolPtr pool)
    int	virStoragePoolRefresh		(virStoragePoolPtr pool,
    					 unsigned int flags)
    int	virStoragePoolSetAutostart	(virStoragePoolPtr pool,
    					 int autostart)
    int	virStoragePoolUndefine		(virStoragePoolPtr pool)
    virStorageVolPtr	virStorageVolCreateXML	(virStoragePoolPtr pool,
    						 const char * xmlDesc,
    						 unsigned int flags)
    virStorageVolPtr	virStorageVolCreateXMLFrom	(virStoragePoolPtr pool,
    							 const char * xmlDesc,
    							 virStorageVolPtr clonevol,
    							 unsigned int flags)
    int	virStorageVolDelete		(virStorageVolPtr vol,
    					 unsigned int flags)
    int	virStorageVolDownload		(virStorageVolPtr vol,
    					 virStreamPtr stream,
    					 unsigned long long offset,
    					 unsigned long long length,
    					 unsigned int flags)
    int	virStorageVolFree		(virStorageVolPtr vol)
    virConnectPtr	virStorageVolGetConnect	(virStorageVolPtr vol)
    int	virStorageVolGetInfo		(virStorageVolPtr vol,
    					 virStorageVolInfoPtr info)
    const char *	virStorageVolGetKey	(virStorageVolPtr vol)
    const char *	virStorageVolGetName	(virStorageVolPtr vol)
    char *	virStorageVolGetPath		(virStorageVolPtr vol)
    char *	virStorageVolGetXMLDesc		(virStorageVolPtr vol,
    					 unsigned int flags)
    virStorageVolPtr	virStorageVolLookupByKey	(virConnectPtr conn,
    							 const char * key)
    virStorageVolPtr	virStorageVolLookupByName	(virStoragePoolPtr pool,
    							 const char * name)
    virStorageVolPtr	virStorageVolLookupByPath	(virConnectPtr conn,
    							 const char * path)
    int	virStorageVolRef		(virStorageVolPtr vol)
    int	virStorageVolResize		(virStorageVolPtr vol,
    					 unsigned long long capacity,
    					 unsigned int flags)
    int	virStorageVolUpload		(virStorageVolPtr vol,
    					 virStreamPtr stream,
    					 unsigned long long offset,
    					 unsigned long long length,
    					 unsigned int flags)
    int	virStorageVolWipe		(virStorageVolPtr vol,
    					 unsigned int flags)
    int	virStorageVolWipePattern	(virStorageVolPtr vol,
    					 unsigned int algorithm,
    					 unsigned int flags)
    int	virStreamAbort			(virStreamPtr stream)
    int	virStreamEventAddCallback	(virStreamPtr stream,
    					 int events,
    					 virStreamEventCallback cb,
    					 void * opaque,
    					 virFreeCallback ff)
    typedef virStreamEventCallback
    void	virStreamEventCallback		(virStreamPtr stream,
    					 int events,
    					 void * opaque)

    int	virStreamEventRemoveCallback	(virStreamPtr stream)
    int	virStreamEventUpdateCallback	(virStreamPtr stream,
    					 int events)
    int	virStreamFinish			(virStreamPtr stream)
    int	virStreamFree			(virStreamPtr stream)
    virStreamPtr	virStreamNew		(virConnectPtr conn,
    					 unsigned int flags)
    int	virStreamRecv			(virStreamPtr stream,
    					 char * data,
    					 size_t nbytes)
    int	virStreamRecvAll		(virStreamPtr stream,
    					 virStreamSinkFunc handler,
    					 void * opaque)
    int	virStreamRef			(virStreamPtr stream)
    int	virStreamSend			(virStreamPtr stream,
    					 const char * data,
    					 size_t nbytes)
    int	virStreamSendAll		(virStreamPtr stream,
    					 virStreamSourceFunc handler,
    					 void * opaque)
    typedef virStreamSinkFunc
    int	virStreamSinkFunc		(virStreamPtr st,
    					 const char * data,
    					 size_t nbytes,
    					 void * opaque)

    typedef virStreamSourceFunc
    int	virStreamSourceFunc		(virStreamPtr st,
    					 char * data,
    					 size_t nbytes,
    					 void * opaque)

    int	virTypedParamsAddBoolean	(virTypedParameterPtr * params,
    					 int * nparams,
    					 int * maxparams,
    					 const char * name,
    					 int value)
    int	virTypedParamsAddDouble		(virTypedParameterPtr * params,
    					 int * nparams,
    					 int * maxparams,
    					 const char * name,
    					 double value)
    int	virTypedParamsAddFromString	(virTypedParameterPtr * params,
    					 int * nparams,
    					 int * maxparams,
    					 const char * name,
    					 int type,
    					 const char * value)
    int	virTypedParamsAddInt		(virTypedParameterPtr * params,
    					 int * nparams,
    					 int * maxparams,
    					 const char * name,
    					 int value)
    int	virTypedParamsAddLLong		(virTypedParameterPtr * params,
    					 int * nparams,
    					 int * maxparams,
    					 const char * name,
    					 long long value)
    int	virTypedParamsAddString		(virTypedParameterPtr * params,
    					 int * nparams,
    					 int * maxparams,
    					 const char * name,
    					 const char * value)
    int	virTypedParamsAddUInt		(virTypedParameterPtr * params,
    					 int * nparams,
    					 int * maxparams,
    					 const char * name,
    					 unsigned int value)
    int	virTypedParamsAddULLong		(virTypedParameterPtr * params,
    					 int * nparams,
    					 int * maxparams,
    					 const char * name,
    					 unsigned long long value)
    void	virTypedParamsClear		(virTypedParameterPtr params,
    					 int nparams)
    void	virTypedParamsFree		(virTypedParameterPtr params,
    					 int nparams)
    virTypedParameterPtr	virTypedParamsGet	(virTypedParameterPtr params,
    						 int nparams,
    						 const char * name)
    int	virTypedParamsGetBoolean	(virTypedParameterPtr params,
    					 int nparams,
    					 const char * name,
    					 int * value)
    int	virTypedParamsGetDouble		(virTypedParameterPtr params,
    					 int nparams,
    					 const char * name,
    					 double * value)
    int	virTypedParamsGetInt		(virTypedParameterPtr params,
    					 int nparams,
    					 const char * name,
    					 int * value)
    int	virTypedParamsGetLLong		(virTypedParameterPtr params,
    					 int nparams,
    					 const char * name,
    					 long long * value)
    int	virTypedParamsGetString		(virTypedParameterPtr params,
    					 int nparams,
    					 const char * name,
    					 const char ** value)
    int	virTypedParamsGetUInt		(virTypedParameterPtr params,
    					 int nparams,
    					 const char * name,
    					 unsigned int * value)
    int	virTypedParamsGetULLong		(virTypedParameterPtr params,
    					 int nparams,
    					 const char * name,
    					 unsigned long long * value)

## Description

### Macros

### `LIBVIR_CHECK_VERSION`

    #define LIBVIR_CHECK_VERSION

Macro for developers to easily check what version of the library their code is compiling against. e.g. #if LIBVIR_CHECK_VERSION(1,1,3) // some code that only works in 1.1.3 and newer #endif

### `LIBVIR_VERSION_NUMBER`

    #define LIBVIR_VERSION_NUMBER

Macro providing the version of the library as version * 1,000,000 + minor * 1000 + micro

### `VIR_COPY_CPUMAP`

    #define VIR_COPY_CPUMAP

This macro is to be used in conjunction with virDomainGetVcpus() and virDomainPinVcpu() APIs. VIR_COPY_CPUMAP macro extracts the cpumap of the specified vcpu from cpumaps array and copies it into cpumap to be used later by virDomainPinVcpu() API.

### `VIR_CPU_MAPLEN`

    #define VIR_CPU_MAPLEN

This macro is to be used in conjunction with virDomainPinVcpu() API. It returns the length (in bytes) required to store the complete CPU map between a single virtual & all physical CPUs of a domain.

### `VIR_CPU_USABLE`

    #define VIR_CPU_USABLE

This macro is to be used in conjunction with virDomainGetVcpus() API. VIR_CPU_USABLE macro returns a non-zero value (true) if the cpu is usable by the vcpu, and 0 otherwise.

### `VIR_CPU_USED`

    #define VIR_CPU_USED

This macro can be used in conjunction with virNodeGetCPUMap() API. It returns non-zero if the bit of the related CPU is set.

### `VIR_DOMAIN_BANDWIDTH_IN_AVERAGE`

    #define VIR_DOMAIN_BANDWIDTH_IN_AVERAGE

Macro represents the inbound average of NIC bandwidth, as a uint.

### `VIR_DOMAIN_BANDWIDTH_IN_BURST`

    #define VIR_DOMAIN_BANDWIDTH_IN_BURST

Macro represents the inbound burst of NIC bandwidth, as a uint.

### `VIR_DOMAIN_BANDWIDTH_IN_PEAK`

    #define VIR_DOMAIN_BANDWIDTH_IN_PEAK

Macro represents the inbound peak of NIC bandwidth, as a uint.

### `VIR_DOMAIN_BANDWIDTH_OUT_AVERAGE`

    #define VIR_DOMAIN_BANDWIDTH_OUT_AVERAGE

Macro represents the outbound average of NIC bandwidth, as a uint.

### `VIR_DOMAIN_BANDWIDTH_OUT_BURST`

    #define VIR_DOMAIN_BANDWIDTH_OUT_BURST

Macro represents the outbound burst of NIC bandwidth, as a uint.

### `VIR_DOMAIN_BANDWIDTH_OUT_PEAK`

    #define VIR_DOMAIN_BANDWIDTH_OUT_PEAK

Macro represents the outbound peak of NIC bandwidth, as a uint.

### `VIR_DOMAIN_BLKIO_DEVICE_READ_BPS`

    #define VIR_DOMAIN_BLKIO_DEVICE_READ_BPS

Macro for the blkio tunable throttle.read_iops_device: it represents the bytes of reading the block device per second, as a string. The string is parsed as a series of /path/to/device, read_bps elements, separated by ','.

### `VIR_DOMAIN_BLKIO_DEVICE_READ_IOPS`

    #define VIR_DOMAIN_BLKIO_DEVICE_READ_IOPS

Macro for the blkio tunable throttle.read_iops_device: it represents the number of reading the block device per second, as a string. The string is parsed as a series of /path/to/device, read_iops elements, separated by ','.

### `VIR_DOMAIN_BLKIO_DEVICE_WEIGHT`

    #define VIR_DOMAIN_BLKIO_DEVICE_WEIGHT

Macro for the blkio tunable weight_device: it represents the per-device weight, as a string. The string is parsed as a series of /path/to/device,weight elements, separated by ','.

### `VIR_DOMAIN_BLKIO_DEVICE_WRITE_BPS`

    #define VIR_DOMAIN_BLKIO_DEVICE_WRITE_BPS

Macro for the blkio tunable throttle.read_iops_device: it represents the number of reading the block device per second, as a string. The string is parsed as a series of /path/to/device, write_bps elements, separated by ','.

### `VIR_DOMAIN_BLKIO_DEVICE_WRITE_IOPS`

    #define VIR_DOMAIN_BLKIO_DEVICE_WRITE_IOPS

Macro for the blkio tunable throttle.write_iops_device: it represents the number of writing the block device per second, as a string. The string is parsed as a series of /path/to/device, write_iops elements, separated by ','.

### `VIR_DOMAIN_BLKIO_FIELD_LENGTH`

    #define VIR_DOMAIN_BLKIO_FIELD_LENGTH

Macro providing the field length of virBlkioParameter. Provided for backwards compatibility; VIR_TYPED_PARAM_FIELD_LENGTH is the preferred value since 0.9.2.

### `VIR_DOMAIN_BLKIO_WEIGHT`

    #define VIR_DOMAIN_BLKIO_WEIGHT

Macro for the Blkio tunable weight: it represents the io weight the guest can use, as a uint.

### `VIR_DOMAIN_BLOCK_COPY_BANDWIDTH`

    #define VIR_DOMAIN_BLOCK_COPY_BANDWIDTH

Macro for the virDomainBlockCopy bandwidth tunable: it represents the maximum bandwidth in bytes/s, and is used while getting the copy operation into the mirrored phase, with a type of ullong. For compatibility with virDomainBlockJobSetSpeed(), values larger than 2^52 bytes/sec (a 32-bit MiB/s value) may be rejected on input due to overflow considerations (but do you really have an interface with that much bandwidth?), and values larger than 2^31 bytes/sec may cause overflow problems if queried in bytes/sec. Hypervisors may further restrict the set of valid values. Specifying 0 is the same as omitting this parameter, to request no bandwidth limiting. Some hypervisors may lack support for this parameter, while still allowing a subsequent change of bandwidth via virDomainBlockJobSetSpeed(). The actual speed can be determined with virDomainGetBlockJobInfo().

### `VIR_DOMAIN_BLOCK_COPY_BUF_SIZE`

    #define VIR_DOMAIN_BLOCK_COPY_BUF_SIZE

Macro for the virDomainBlockCopy buffer size tunable: it represents how much data in bytes can be in flight between source and destination, as an unsigned long long. Specifying 0 is the same as omitting this parameter, to request the hypervisor default.

### `VIR_DOMAIN_BLOCK_COPY_GRANULARITY`

    #define VIR_DOMAIN_BLOCK_COPY_GRANULARITY

Macro for the virDomainBlockCopy granularity tunable: it represents the granularity in bytes at which the copy operation recognizes dirty blocks that need copying, as an unsigned int. Hypervisors may restrict this to be a power of two or fall within a certain range. Specifying 0 is the same as omitting this parameter, to request the hypervisor default.

### `VIR_DOMAIN_BLOCK_IOTUNE_READ_BYTES_SEC`

    #define VIR_DOMAIN_BLOCK_IOTUNE_READ_BYTES_SEC

Macro for the BlockIoTune tunable weight: it represents the read bytes per second permitted through a block device, as a ullong.

### `VIR_DOMAIN_BLOCK_IOTUNE_READ_IOPS_SEC`

    #define VIR_DOMAIN_BLOCK_IOTUNE_READ_IOPS_SEC

Macro for the BlockIoTune tunable weight: it represents the read I/O operations per second permitted through a block device, as a ullong.

### `VIR_DOMAIN_BLOCK_IOTUNE_TOTAL_BYTES_SEC`

    #define VIR_DOMAIN_BLOCK_IOTUNE_TOTAL_BYTES_SEC

Macro for the BlockIoTune tunable weight: it represents the total bytes per second permitted through a block device, as a ullong.

### `VIR_DOMAIN_BLOCK_IOTUNE_TOTAL_IOPS_SEC`

    #define VIR_DOMAIN_BLOCK_IOTUNE_TOTAL_IOPS_SEC

Macro for the BlockIoTune tunable weight: it represents the total I/O operations per second permitted through a block device, as a ullong.

### `VIR_DOMAIN_BLOCK_IOTUNE_WRITE_BYTES_SEC`

    #define VIR_DOMAIN_BLOCK_IOTUNE_WRITE_BYTES_SEC

Macro for the BlockIoTune tunable weight: it represents the write bytes per second permitted through a block device, as a ullong.

### `VIR_DOMAIN_BLOCK_IOTUNE_WRITE_IOPS_SEC`

    #define VIR_DOMAIN_BLOCK_IOTUNE_WRITE_IOPS_SEC

Macro for the BlockIoTune tunable weight: it represents the write I/O operations per second permitted through a block device, as a ullong.

### `VIR_DOMAIN_BLOCK_STATS_ERRS`

    #define VIR_DOMAIN_BLOCK_STATS_ERRS

In Xen this returns the mysterious 'oo_req', as an llong.

### `VIR_DOMAIN_BLOCK_STATS_FIELD_LENGTH`

    #define VIR_DOMAIN_BLOCK_STATS_FIELD_LENGTH

Macro providing the field length of parameter names when using virDomainBlockStatsFlags().

### `VIR_DOMAIN_BLOCK_STATS_FLUSH_REQ`

    #define VIR_DOMAIN_BLOCK_STATS_FLUSH_REQ

Macro represents the total flush requests of the block device, as an llong.

### `VIR_DOMAIN_BLOCK_STATS_FLUSH_TOTAL_TIMES`

    #define VIR_DOMAIN_BLOCK_STATS_FLUSH_TOTAL_TIMES

Macro represents the total time spend on cache flushing in nano-seconds of the block device, as an llong.

### `VIR_DOMAIN_BLOCK_STATS_READ_BYTES`

    #define VIR_DOMAIN_BLOCK_STATS_READ_BYTES

Macro represents the total number of read bytes of the block device, as an llong.

### `VIR_DOMAIN_BLOCK_STATS_READ_REQ`

    #define VIR_DOMAIN_BLOCK_STATS_READ_REQ

Macro represents the total read requests of the block device, as an llong.

### `VIR_DOMAIN_BLOCK_STATS_READ_TOTAL_TIMES`

    #define VIR_DOMAIN_BLOCK_STATS_READ_TOTAL_TIMES

Macro represents the total time spend on cache reads in nano-seconds of the block device, as an llong.

### `VIR_DOMAIN_BLOCK_STATS_WRITE_BYTES`

    #define VIR_DOMAIN_BLOCK_STATS_WRITE_BYTES

Macro represents the total number of write bytes of the block device, as an llong.

### `VIR_DOMAIN_BLOCK_STATS_WRITE_REQ`

    #define VIR_DOMAIN_BLOCK_STATS_WRITE_REQ

Macro represents the total write requests of the block device, as an llong.

### `VIR_DOMAIN_BLOCK_STATS_WRITE_TOTAL_TIMES`

    #define VIR_DOMAIN_BLOCK_STATS_WRITE_TOTAL_TIMES

Macro represents the total time spend on cache writes in nano-seconds of the block device, as an llong.

### `VIR_DOMAIN_CPU_STATS_CPUTIME`

    #define VIR_DOMAIN_CPU_STATS_CPUTIME

cpu usage (sum of both vcpu and hypervisor usage) in nanoseconds, as a ullong

### `VIR_DOMAIN_CPU_STATS_SYSTEMTIME`

    #define VIR_DOMAIN_CPU_STATS_SYSTEMTIME

cpu time charged to system instructions in nanoseconds, as a ullong

### `VIR_DOMAIN_CPU_STATS_USERTIME`

    #define VIR_DOMAIN_CPU_STATS_USERTIME

cpu time charged to user instructions in nanoseconds, as a ullong

### `VIR_DOMAIN_CPU_STATS_VCPUTIME`

    #define VIR_DOMAIN_CPU_STATS_VCPUTIME

vcpu usage in nanoseconds (cpu_time excluding hypervisor time), as a ullong

### `VIR_DOMAIN_EVENT_CALLBACK`

    #define VIR_DOMAIN_EVENT_CALLBACK

Used to cast the event specific callback into the generic one for use for virConnectDomainEventRegisterAny()

### `VIR_DOMAIN_JOB_COMPRESSION_BYTES`

    #define VIR_DOMAIN_JOB_COMPRESSION_BYTES

virDomainGetJobStats field: number of compressed bytes transferred since the beginning of migration, as VIR_TYPED_PARAM_ULLONG.

### `VIR_DOMAIN_JOB_COMPRESSION_CACHE`

    #define VIR_DOMAIN_JOB_COMPRESSION_CACHE

virDomainGetJobStats field: size of the cache (in bytes) used for compressing repeatedly transferred memory pages during live migration, as VIR_TYPED_PARAM_ULLONG.

### `VIR_DOMAIN_JOB_COMPRESSION_CACHE_MISSES`

    #define VIR_DOMAIN_JOB_COMPRESSION_CACHE_MISSES

virDomainGetJobStats field: number of repeatedly changing pages that were not found in compression cache and thus could not be compressed, as VIR_TYPED_PARAM_ULLONG.

### `VIR_DOMAIN_JOB_COMPRESSION_OVERFLOW`

    #define VIR_DOMAIN_JOB_COMPRESSION_OVERFLOW

virDomainGetJobStats field: number of repeatedly changing pages that were found in compression cache but were sent uncompressed because the result of compression was larger than the original page as a whole, as VIR_TYPED_PARAM_ULLONG.

### `VIR_DOMAIN_JOB_COMPRESSION_PAGES`

    #define VIR_DOMAIN_JOB_COMPRESSION_PAGES

virDomainGetJobStats field: number of compressed pages transferred since the beginning of migration, as VIR_TYPED_PARAM_ULLONG.

### `VIR_DOMAIN_JOB_DATA_PROCESSED`

    #define VIR_DOMAIN_JOB_DATA_PROCESSED

virDomainGetJobStats field: number of bytes transferred from the beginning of the job, as VIR_TYPED_PARAM_ULLONG. This field corresponds to dataProcessed field in virDomainJobInfo.

### `VIR_DOMAIN_JOB_DATA_REMAINING`

    #define VIR_DOMAIN_JOB_DATA_REMAINING

virDomainGetJobStats field: number of bytes that still need to be transferred, as VIR_TYPED_PARAM_ULLONG. This field corresponds to dataRemaining field in virDomainJobInfo.

### `VIR_DOMAIN_JOB_DATA_TOTAL`

    #define VIR_DOMAIN_JOB_DATA_TOTAL

virDomainGetJobStats field: total number of bytes supposed to be transferred, as VIR_TYPED_PARAM_ULLONG. For VIR_DOMAIN_JOB_UNBOUNDED jobs, this may be less than the sum of VIR_DOMAIN_JOB_DATA_PROCESSED and VIR_DOMAIN_JOB_DATA_REMAINING in the event that the hypervisor has to repeat some data, e.g., due to dirtied pages during migration. For VIR_DOMAIN_JOB_BOUNDED jobs, VIR_DOMAIN_JOB_DATA_TOTAL shall always equal VIR_DOMAIN_JOB_DATA_PROCESSED + VIR_DOMAIN_JOB_DATA_REMAINING. This field corresponds to dataTotal field in virDomainJobInfo.

### `VIR_DOMAIN_JOB_DISK_BPS`

    #define VIR_DOMAIN_JOB_DISK_BPS

virDomainGetJobStats field: network throughput used while migrating disks in Bytes per second, as VIR_TYPED_PARAM_ULLONG.

### `VIR_DOMAIN_JOB_DISK_PROCESSED`

    #define VIR_DOMAIN_JOB_DISK_PROCESSED

virDomainGetJobStats field: as VIR_DOMAIN_JOB_DATA_PROCESSED but only tracking guest disk progress, as VIR_TYPED_PARAM_ULLONG. This field corresponds to fileProcessed field in virDomainJobInfo.

### `VIR_DOMAIN_JOB_DISK_REMAINING`

    #define VIR_DOMAIN_JOB_DISK_REMAINING

virDomainGetJobStats field: as VIR_DOMAIN_JOB_DATA_REMAINING but only tracking guest disk progress, as VIR_TYPED_PARAM_ULLONG. This field corresponds to fileRemaining field in virDomainJobInfo.

### `VIR_DOMAIN_JOB_DISK_TOTAL`

    #define VIR_DOMAIN_JOB_DISK_TOTAL

virDomainGetJobStats field: as VIR_DOMAIN_JOB_DATA_TOTAL but only tracking guest disk progress, as VIR_TYPED_PARAM_ULLONG. This field corresponds to fileTotal field in virDomainJobInfo.

### `VIR_DOMAIN_JOB_DOWNTIME`

    #define VIR_DOMAIN_JOB_DOWNTIME

virDomainGetJobStats field: downtime (ms) that is expected to happen during migration, as VIR_TYPED_PARAM_ULLONG.

### `VIR_DOMAIN_JOB_MEMORY_BPS`

    #define VIR_DOMAIN_JOB_MEMORY_BPS

virDomainGetJobStats field: network throughput used while migrating memory in Bytes per second, as VIR_TYPED_PARAM_ULLONG.

### `VIR_DOMAIN_JOB_MEMORY_CONSTANT`

    #define VIR_DOMAIN_JOB_MEMORY_CONSTANT

virDomainGetJobStats field: number of pages filled with a constant byte (all bytes in a single page are identical) transferred since the beginning of the migration job, as VIR_TYPED_PARAM_ULLONG. The most common example of such pages are zero pages, i.e., pages filled with zero bytes.

### `VIR_DOMAIN_JOB_MEMORY_NORMAL`

    #define VIR_DOMAIN_JOB_MEMORY_NORMAL

virDomainGetJobStats field: number of pages that were transferred without any kind of compression (i.e., pages which were not filled with a constant byte and which could not be compressed) transferred since the beginning of the migration job, as VIR_TYPED_PARAM_ULLONG.

### `VIR_DOMAIN_JOB_MEMORY_NORMAL_BYTES`

    #define VIR_DOMAIN_JOB_MEMORY_NORMAL_BYTES

virDomainGetJobStats field: number of bytes transferred as normal pages, as VIR_TYPED_PARAM_ULLONG. See VIR_DOMAIN_JOB_MEMORY_NORMAL for more details.

### `VIR_DOMAIN_JOB_MEMORY_PROCESSED`

    #define VIR_DOMAIN_JOB_MEMORY_PROCESSED

virDomainGetJobStats field: as VIR_DOMAIN_JOB_DATA_PROCESSED but only tracking guest memory progress, as VIR_TYPED_PARAM_ULLONG. This field corresponds to memProcessed field in virDomainJobInfo.

### `VIR_DOMAIN_JOB_MEMORY_REMAINING`

    #define VIR_DOMAIN_JOB_MEMORY_REMAINING

virDomainGetJobStats field: as VIR_DOMAIN_JOB_DATA_REMAINING but only tracking guest memory progress, as VIR_TYPED_PARAM_ULLONG. This field corresponds to memRemaining field in virDomainJobInfo.

### `VIR_DOMAIN_JOB_MEMORY_TOTAL`

    #define VIR_DOMAIN_JOB_MEMORY_TOTAL

virDomainGetJobStats field: as VIR_DOMAIN_JOB_DATA_TOTAL but only tracking guest memory progress, as VIR_TYPED_PARAM_ULLONG. This field corresponds to memTotal field in virDomainJobInfo.

### `VIR_DOMAIN_JOB_SETUP_TIME`

    #define VIR_DOMAIN_JOB_SETUP_TIME

virDomainGetJobStats field: total time in milliseconds spent preparing the migration in the 'setup' phase before the iterations begin, as VIR_TYPED_PARAM_ULLONG.

### `VIR_DOMAIN_JOB_TIME_ELAPSED`

    #define VIR_DOMAIN_JOB_TIME_ELAPSED

virDomainGetJobStats field: time (ms) since the beginning of the job, as VIR_TYPED_PARAM_ULLONG. This field corresponds to timeElapsed field in virDomainJobInfo.

### `VIR_DOMAIN_JOB_TIME_REMAINING`

    #define VIR_DOMAIN_JOB_TIME_REMAINING

virDomainGetJobStats field: remaining time (ms) for VIR_DOMAIN_JOB_BOUNDED jobs, as VIR_TYPED_PARAM_ULLONG. This field corresponds to timeRemaining field in virDomainJobInfo.

### `VIR_DOMAIN_MEMORY_FIELD_LENGTH`

    #define VIR_DOMAIN_MEMORY_FIELD_LENGTH

Macro providing the field length of virMemoryParameter. Provided for backwards compatibility; VIR_TYPED_PARAM_FIELD_LENGTH is the preferred value since 0.9.2.

### `VIR_DOMAIN_MEMORY_HARD_LIMIT`

    #define VIR_DOMAIN_MEMORY_HARD_LIMIT

Macro for the memory tunable hard_limit: it represents the maximum memory the guest can use, as a ullong.

### `VIR_DOMAIN_MEMORY_MIN_GUARANTEE`

    #define VIR_DOMAIN_MEMORY_MIN_GUARANTEE

Macro for the memory tunable min_guarantee: it represents the minimum memory guaranteed to be reserved for the guest, as a ullong.

### `VIR_DOMAIN_MEMORY_PARAM_UNLIMITED`

    #define VIR_DOMAIN_MEMORY_PARAM_UNLIMITED

Macro providing the virMemoryParameter value that indicates "unlimited"

### `VIR_DOMAIN_MEMORY_SOFT_LIMIT`

    #define VIR_DOMAIN_MEMORY_SOFT_LIMIT

Macro for the memory tunable soft_limit: it represents the memory upper limit enforced during memory contention, as a ullong.

### `VIR_DOMAIN_MEMORY_SWAP_HARD_LIMIT`

    #define VIR_DOMAIN_MEMORY_SWAP_HARD_LIMIT

Macro for the swap tunable swap_hard_limit: it represents the maximum swap plus memory the guest can use, as a ullong. This limit has to be more than VIR_DOMAIN_MEMORY_HARD_LIMIT.

### `VIR_DOMAIN_NUMA_MODE`

    #define VIR_DOMAIN_NUMA_MODE

Macro for typed parameter name that lists the numa mode of a domain, as an int containing a virDomainNumatuneMemMode value.

### `VIR_DOMAIN_NUMA_NODESET`

    #define VIR_DOMAIN_NUMA_NODESET

Macro for typed parameter name that lists the numa nodeset of a domain, as a string.

### `VIR_DOMAIN_SCHEDULER_CAP`

    #define VIR_DOMAIN_SCHEDULER_CAP

Macro represents the maximum scheduler cap, when using the credit scheduler, as a uint.

### `VIR_DOMAIN_SCHEDULER_CPU_SHARES`

    #define VIR_DOMAIN_SCHEDULER_CPU_SHARES

Macro represents proportional weight of the scheduler used on the host cpu, when using the posix scheduler, as a ullong.

### `VIR_DOMAIN_SCHEDULER_EMULATOR_PERIOD`

    #define VIR_DOMAIN_SCHEDULER_EMULATOR_PERIOD

Macro represents the enforcement period for a quota in microseconds, when using the posix scheduler, for all emulator activity not tied to vcpus, as a ullong.

### `VIR_DOMAIN_SCHEDULER_EMULATOR_QUOTA`

    #define VIR_DOMAIN_SCHEDULER_EMULATOR_QUOTA

Macro represents the maximum bandwidth to be used within a period for all emulator activity not tied to vcpus, when using the posix scheduler, as an llong.

### `VIR_DOMAIN_SCHEDULER_LIMIT`

    #define VIR_DOMAIN_SCHEDULER_LIMIT

Macro represents the scheduler limit value, when using the allocation scheduler, as an llong.

### `VIR_DOMAIN_SCHEDULER_RESERVATION`

    #define VIR_DOMAIN_SCHEDULER_RESERVATION

Macro represents the scheduler reservation value, when using the allocation scheduler, as an llong.

### `VIR_DOMAIN_SCHEDULER_SHARES`

    #define VIR_DOMAIN_SCHEDULER_SHARES

Macro represents the scheduler shares value, when using the allocation scheduler, as an int.

### `VIR_DOMAIN_SCHEDULER_VCPU_PERIOD`

    #define VIR_DOMAIN_SCHEDULER_VCPU_PERIOD

Macro represents the enforcement period for a quota, in microseconds, for vcpus only, when using the posix scheduler, as a ullong.

### `VIR_DOMAIN_SCHEDULER_VCPU_QUOTA`

    #define VIR_DOMAIN_SCHEDULER_VCPU_QUOTA

Macro represents the maximum bandwidth to be used within a period for vcpus only, when using the posix scheduler, as an llong.

### `VIR_DOMAIN_SCHEDULER_WEIGHT`

    #define VIR_DOMAIN_SCHEDULER_WEIGHT

Macro represents the relative weight, when using the credit scheduler, as a uint.

### `VIR_DOMAIN_SCHED_FIELD_LENGTH`

    #define VIR_DOMAIN_SCHED_FIELD_LENGTH

Macro providing the field length of virSchedParameter. Provided for backwards compatibility; VIR_TYPED_PARAM_FIELD_LENGTH is the preferred value since 0.9.2.

### `VIR_DOMAIN_SEND_KEY_MAX_KEYS`

    #define VIR_DOMAIN_SEND_KEY_MAX_KEYS

Maximum number of keycodes that can be sent in one virDomainSendKey() call.

### `VIR_DOMAIN_TUNABLE_BLKDEV_DISK`

    #define VIR_DOMAIN_TUNABLE_BLKDEV_DISK

Macro represents the name of guest disk for which the values are updated, as VIR_TYPED_PARAM_STRING.

### `VIR_DOMAIN_TUNABLE_BLKDEV_READ_BYTES_SEC`

    #define VIR_DOMAIN_TUNABLE_BLKDEV_READ_BYTES_SEC

Marco represents the read throughput limit in bytes per second, as VIR_TYPED_PARAM_ULLONG.

### `VIR_DOMAIN_TUNABLE_BLKDEV_READ_IOPS_SEC`

    #define VIR_DOMAIN_TUNABLE_BLKDEV_READ_IOPS_SEC

Macro represents the read I/O operations per second, as VIR_TYPED_PARAM_ULLONG.

### `VIR_DOMAIN_TUNABLE_BLKDEV_TOTAL_BYTES_SEC`

    #define VIR_DOMAIN_TUNABLE_BLKDEV_TOTAL_BYTES_SEC

Marco represents the total throughput limit in bytes per second, as VIR_TYPED_PARAM_ULLONG.

### `VIR_DOMAIN_TUNABLE_BLKDEV_TOTAL_IOPS_SEC`

    #define VIR_DOMAIN_TUNABLE_BLKDEV_TOTAL_IOPS_SEC

Macro represents the total I/O operations per second, as VIR_TYPED_PARAM_ULLONG.

### `VIR_DOMAIN_TUNABLE_BLKDEV_WRITE_BYTES_SEC`

    #define VIR_DOMAIN_TUNABLE_BLKDEV_WRITE_BYTES_SEC

Macro represents the write throughput limit in bytes per second, as VIR_TYPED_PARAM_ULLONG.

### `VIR_DOMAIN_TUNABLE_BLKDEV_WRITE_IOPS_SEC`

    #define VIR_DOMAIN_TUNABLE_BLKDEV_WRITE_IOPS_SEC

Macro represents the write I/O operations per second, as VIR_TYPED_PARAM_ULLONG.

### `VIR_DOMAIN_TUNABLE_CPU_CPU_SHARES`

    #define VIR_DOMAIN_TUNABLE_CPU_CPU_SHARES

Macro represents proportional weight of the scheduler used on the host cpu, when using the posix scheduler, as VIR_TYPED_PARAM_ULLONG.

### `VIR_DOMAIN_TUNABLE_CPU_EMULATORPIN`

    #define VIR_DOMAIN_TUNABLE_CPU_EMULATORPIN

Macro represents formatted pinning for emulator process, as VIR_TYPED_PARAM_STRING.

### `VIR_DOMAIN_TUNABLE_CPU_EMULATOR_PERIOD`

    #define VIR_DOMAIN_TUNABLE_CPU_EMULATOR_PERIOD

Macro represents the enforcement period for a quota in microseconds, when using the posix scheduler, for all emulator activity not tied to vcpus, as VIR_TYPED_PARAM_ULLONG.

### `VIR_DOMAIN_TUNABLE_CPU_EMULATOR_QUOTA`

    #define VIR_DOMAIN_TUNABLE_CPU_EMULATOR_QUOTA

Macro represents the maximum bandwidth to be used within a period for all emulator activity not tied to vcpus, when using the posix scheduler, as an VIR_TYPED_PARAM_LLONG.

### `VIR_DOMAIN_TUNABLE_CPU_VCPUPIN`

    #define VIR_DOMAIN_TUNABLE_CPU_VCPUPIN

Macro represents formatted pinning for one vcpu specified by id which is appended to the parameter name, for example "cputune.vcpupin1", as VIR_TYPED_PARAM_STRING.

### `VIR_DOMAIN_TUNABLE_CPU_VCPU_PERIOD`

    #define VIR_DOMAIN_TUNABLE_CPU_VCPU_PERIOD

Macro represents the enforcement period for a quota, in microseconds, for vcpus only, when using the posix scheduler, as VIR_TYPED_PARAM_ULLONG.

### `VIR_DOMAIN_TUNABLE_CPU_VCPU_QUOTA`

    #define VIR_DOMAIN_TUNABLE_CPU_VCPU_QUOTA

Macro represents the maximum bandwidth to be used within a period for vcpus only, when using the posix scheduler, as VIR_TYPED_PARAM_LLONG.

### `VIR_GET_CPUMAP`

    #define VIR_GET_CPUMAP

This macro is to be used in conjunction with virDomainGetVcpus() and virDomainPinVcpu() APIs. VIR_GET_CPUMAP macro returns a pointer to the cpumap of the specified vcpu from cpumaps array.

### `VIR_MIGRATE_PARAM_BANDWIDTH`

    #define VIR_MIGRATE_PARAM_BANDWIDTH

virDomainMigrate* params field: the maximum bandwidth (in MiB/s) that will be used for migration as VIR_TYPED_PARAM_ULLONG. If set to 0 or omitted, libvirt will choose a suitable default. Some hypervisors do not support this feature and will return an error if this field is used and is not 0.

### `VIR_MIGRATE_PARAM_DEST_NAME`

    #define VIR_MIGRATE_PARAM_DEST_NAME

virDomainMigrate* params field: the name to be used for the domain on the destination host as VIR_TYPED_PARAM_STRING. Omitting this parameter keeps the domain name the same. This field is only allowed to be used with hypervisors that support domain renaming during migration.

### `VIR_MIGRATE_PARAM_DEST_XML`

    #define VIR_MIGRATE_PARAM_DEST_XML

virDomainMigrate* params field: the new configuration to be used for the domain on the destination host as VIR_TYPED_PARAM_STRING. The configuration must include an identical set of virtual devices, to ensure a stable guest ABI across migration. Only parameters related to host side configuration can be changed in the XML. Hypervisors which support this field will forbid migration if the provided XML would cause a change in the guest ABI. This field cannot be used to rename the domain during migration (use VIR_MIGRATE_PARAM_DEST_NAME field for that purpose). Domain name in the destination XML must match the original domain name. Omitting this parameter keeps the original domain configuration. Using this field with hypervisors that do not support changing domain configuration during migration will result in a failure.

### `VIR_MIGRATE_PARAM_GRAPHICS_URI`

    #define VIR_MIGRATE_PARAM_GRAPHICS_URI

virDomainMigrate* params field: URI to use for migrating client's connection to domain's graphical console as VIR_TYPED_PARAM_STRING. If specified, the client will be asked to automatically reconnect using these parameters instead of the automatically computed ones. This can be useful if, e.g., the client does not have a direct access to the network virtualization hosts are connected to and needs to connect through a proxy. The URI is formed as follows: protocol://hostname[:port]/[?parameters] where protocol is either "spice" or "vnc" and parameters is a list of protocol specific parameters separated by '&'. Currently recognized parameters are "tlsPort" and "tlsSubject". For example, spice://target.host.com:1234/?tlsPort=4567

### `VIR_MIGRATE_PARAM_LISTEN_ADDRESS`

    #define VIR_MIGRATE_PARAM_LISTEN_ADDRESS

virDomainMigrate* params field: The listen address that hypervisor on the destination side should bind to for incoming migration. Both IPv4 and IPv6 addresses are accepted as well as hostnames (the resolving is done on destination). Some hypervisors do not support this feature and will return an error if this field is used.

### `VIR_MIGRATE_PARAM_URI`

    #define VIR_MIGRATE_PARAM_URI

virDomainMigrate* params field: URI to use for initiating domain migration as VIR_TYPED_PARAM_STRING. It takes a hypervisor specific format. The uri_transports element of the hypervisor capabilities XML includes details of the supported URI schemes. When omitted libvirt will auto-generate suitable default URI. It is typically only necessary to specify this URI if the destination host has multiple interfaces and a specific interface is required to transmit migration data. This filed may not be used when VIR_MIGRATE_TUNNELLED flag is set.

### `VIR_NETWORK_EVENT_CALLBACK`

    #define VIR_NETWORK_EVENT_CALLBACK

Used to cast the event specific callback into the generic one for use for virConnectNetworkEventRegisterAny()

### `VIR_NODEINFO_MAXCPUS`

    #define VIR_NODEINFO_MAXCPUS

This macro is to calculate the total number of CPUs supported but not necessary active in the host.

### `VIR_NODE_CPU_STATS_FIELD_LENGTH`

    #define VIR_NODE_CPU_STATS_FIELD_LENGTH

Macro providing the field length of virNodeCPUStats

### `VIR_NODE_CPU_STATS_IDLE`

    #define VIR_NODE_CPU_STATS_IDLE

The cumulative idle CPU time, since the node booting up (in nanoseconds).

### `VIR_NODE_CPU_STATS_INTR`

    #define VIR_NODE_CPU_STATS_INTR

The cumulative interrupt CPU time, since the node booting up (in nanoseconds).

### `VIR_NODE_CPU_STATS_IOWAIT`

    #define VIR_NODE_CPU_STATS_IOWAIT

The cumulative I/O wait CPU time, since the node booting up (in nanoseconds).

### `VIR_NODE_CPU_STATS_KERNEL`

    #define VIR_NODE_CPU_STATS_KERNEL

Macro for the cumulative CPU time which was spent by the kernel, since the node booting up (in nanoseconds).

### `VIR_NODE_CPU_STATS_USER`

    #define VIR_NODE_CPU_STATS_USER

The cumulative CPU time which was spent by user processes, since the node booting up (in nanoseconds).

### `VIR_NODE_CPU_STATS_UTILIZATION`

    #define VIR_NODE_CPU_STATS_UTILIZATION

The CPU utilization of a node. The usage value is in percent and 100% represents all CPUs of the node.

### `VIR_NODE_MEMORY_STATS_BUFFERS`

    #define VIR_NODE_MEMORY_STATS_BUFFERS

Macro for the buffer memory: On Linux, it is only returned in case of VIR_NODE_MEMORY_STATS_ALL_CELLS.

### `VIR_NODE_MEMORY_STATS_CACHED`

    #define VIR_NODE_MEMORY_STATS_CACHED

Macro for the cached memory: On Linux, it is only returned in case of VIR_NODE_MEMORY_STATS_ALL_CELLS.

### `VIR_NODE_MEMORY_STATS_FIELD_LENGTH`

    #define VIR_NODE_MEMORY_STATS_FIELD_LENGTH

Macro providing the field length of virNodeMemoryStats

### `VIR_NODE_MEMORY_STATS_FREE`

    #define VIR_NODE_MEMORY_STATS_FREE

Macro for the free memory of specified cell: On Linux, it includes buffer and cached memory, in case of VIR_NODE_MEMORY_STATS_ALL_CELLS.

### `VIR_NODE_MEMORY_STATS_TOTAL`

    #define VIR_NODE_MEMORY_STATS_TOTAL

Macro for the total memory of specified cell: it represents the maximum memory.

### `VIR_SECURITY_DOI_BUFLEN`

    #define VIR_SECURITY_DOI_BUFLEN

Macro providing the maximum length of the virSecurityModel doi string.

### `VIR_SECURITY_LABEL_BUFLEN`

    #define VIR_SECURITY_LABEL_BUFLEN

Macro providing the maximum length of the virSecurityLabel label string. Note that this value is based on that used by Labeled NFS.

### `VIR_SECURITY_MODEL_BUFLEN`

    #define VIR_SECURITY_MODEL_BUFLEN

Macro providing the maximum length of the virSecurityModel model string.

### `VIR_TYPED_PARAM_FIELD_LENGTH`

    #define VIR_TYPED_PARAM_FIELD_LENGTH

Macro providing the field length of virTypedParameter name

### `VIR_UNUSE_CPU`

    #define VIR_UNUSE_CPU

This macro is to be used in conjunction with virDomainPinVcpu() API. It resets the bit (CPU not usable) of the related cpu in cpumap.

### `VIR_USE_CPU`

    #define VIR_USE_CPU

This macro is to be used in conjunction with virDomainPinVcpu() API. It sets the bit (CPU usable) of the related cpu in cpumap.

### `VIR_UUID_BUFLEN`

    #define VIR_UUID_BUFLEN

This macro provides the length of the buffer required for virDomainGetUUID()

### `VIR_UUID_STRING_BUFLEN`

    #define VIR_UUID_STRING_BUFLEN

This macro provides the length of the buffer required for virDomainGetUUIDString()

### `_virBlkioParameter`

    #define _virBlkioParameter

### `_virMemoryParameter`

    #define _virMemoryParameter

### `_virSchedParameter`

    #define _virSchedParameter

### Types

### `virBlkioParameter`

    struct virBlkioParameter {

char field[VIR_TYPED_PARAM_FIELD_LENGTH] | field | parameter name
int | type | parameter type, virTypedParameterType
union {

int | i | type is INT
unsigned int | ui | type is UINT
long long int | l | type is LLONG
unsigned long long int | ul | type is ULLONG
double | d | type is DOUBLE
char | b | type is BOOLEAN
char * | s | type is STRING, may not be NULL

} | value | parameter value |

    }

### `virBlkioParameterType`

    enum virBlkioParameterType {

VIR_DOMAIN_BLKIO_PARAM_BOOLEAN | = | VIR_TYPED_PARAM_BOOLEAN
VIR_DOMAIN_BLKIO_PARAM_DOUBLE | = | VIR_TYPED_PARAM_DOUBLE
VIR_DOMAIN_BLKIO_PARAM_INT | = | VIR_TYPED_PARAM_INT
VIR_DOMAIN_BLKIO_PARAM_LLONG | = | VIR_TYPED_PARAM_LLONG
VIR_DOMAIN_BLKIO_PARAM_UINT | = | VIR_TYPED_PARAM_UINT
VIR_DOMAIN_BLKIO_PARAM_ULLONG | = | VIR_TYPED_PARAM_ULLONG

    }

### `virCPUCompareResult`

    enum virCPUCompareResult {

VIR_CPU_COMPARE_ERROR | = | -1
VIR_CPU_COMPARE_INCOMPATIBLE | = | 0
VIR_CPU_COMPARE_IDENTICAL | = | 1
VIR_CPU_COMPARE_SUPERSET | = | 2
VIR_CPU_COMPARE_LAST | = | 3

    }

### `virConnect`

    struct virConnect {

The content of this structure is not made public by the API

    }

### `virConnectAuth`

    struct virConnectAuth {

int * | credtype | List of supported virConnectCredentialType values
unsigned int | ncredtype
virConnectAuthCallbackPtr | cb | Callback used to collect credentials
void * | cbdata

    }

### `virConnectBaselineCPUFlags`

    enum virConnectBaselineCPUFlags {

VIR_CONNECT_BASELINE_CPU_EXPAND_FEATURES | = | 1 | show all features

    }

### `virConnectCloseReason`

    enum virConnectCloseReason {

VIR_CONNECT_CLOSE_REASON_ERROR | = | 0 | Misc I/O error
VIR_CONNECT_CLOSE_REASON_EOF | = | 1 | End-of-file from server
VIR_CONNECT_CLOSE_REASON_KEEPALIVE | = | 2 | Keepalive timer triggered
VIR_CONNECT_CLOSE_REASON_CLIENT | = | 3 | Client requested it
VIR_CONNECT_CLOSE_REASON_LAST | = | 4

    }

### `virConnectCompareCPUFlags`

    enum virConnectCompareCPUFlags {

VIR_CONNECT_COMPARE_CPU_FAIL_INCOMPATIBLE | = | 1 | treat incompatible CPUs as failure

    }

### `virConnectCredential`

    struct virConnectCredential {

int | type | One of virConnectCredentialType constants
const char * | prompt | Prompt to show to user
const char * | challenge | Additional challenge to show
const char * | defresult | Optional default result
char * | result | Result to be filled with user response (or defresult)
unsigned int | resultlen | Length of the result

    }

### `virConnectCredentialType`

    enum virConnectCredentialType {

VIR_CRED_USERNAME | = | 1 | Identity to act as
VIR_CRED_AUTHNAME | = | 2 | Identify to authorize as
VIR_CRED_LANGUAGE | = | 3 | RFC 1766 languages, comma separated
VIR_CRED_CNONCE | = | 4 | client supplies a nonce
VIR_CRED_PASSPHRASE | = | 5 | Passphrase secret
VIR_CRED_ECHOPROMPT | = | 6 | Challenge response
VIR_CRED_NOECHOPROMPT | = | 7 | Challenge response
VIR_CRED_REALM | = | 8 | Authentication realm
VIR_CRED_EXTERNAL | = | 9 | Externally managed credential
VIR_CRED_LAST | = | 10 | More may be added - expect the unexpected

    }

### `virConnectDomainEventBlockJobStatus`

    enum virConnectDomainEventBlockJobStatus {

VIR_DOMAIN_BLOCK_JOB_COMPLETED | = | 0
VIR_DOMAIN_BLOCK_JOB_FAILED | = | 1
VIR_DOMAIN_BLOCK_JOB_CANCELED | = | 2
VIR_DOMAIN_BLOCK_JOB_READY | = | 3
VIR_DOMAIN_BLOCK_JOB_LAST | = | 4

    }

### `virConnectDomainEventDiskChangeReason`

    enum virConnectDomainEventDiskChangeReason {

VIR_DOMAIN_EVENT_DISK_CHANGE_MISSING_ON_START | = | 0 | oldSrcPath is set
VIR_DOMAIN_EVENT_DISK_DROP_MISSING_ON_START | = | 1
VIR_DOMAIN_EVENT_DISK_CHANGE_LAST | = | 2

    }

### `virConnectFlags`

    enum virConnectFlags {

VIR_CONNECT_RO | = | 1 | A readonly connection
VIR_CONNECT_NO_ALIASES | = | 2 | Don't try to resolve URI aliases

    }

### `virConnectGetAllDomainStatsFlags`

    enum virConnectGetAllDomainStatsFlags {

VIR_CONNECT_GET_ALL_DOMAINS_STATS_ACTIVE | = | VIR_CONNECT_LIST_DOMAINS_ACTIVE
VIR_CONNECT_GET_ALL_DOMAINS_STATS_INACTIVE | = | VIR_CONNECT_LIST_DOMAINS_INACTIVE
VIR_CONNECT_GET_ALL_DOMAINS_STATS_OTHER | = | VIR_CONNECT_LIST_DOMAINS_OTHER
VIR_CONNECT_GET_ALL_DOMAINS_STATS_PAUSED | = | VIR_CONNECT_LIST_DOMAINS_PAUSED
VIR_CONNECT_GET_ALL_DOMAINS_STATS_PERSISTENT | = | VIR_CONNECT_LIST_DOMAINS_PERSISTENT
VIR_CONNECT_GET_ALL_DOMAINS_STATS_RUNNING | = | VIR_CONNECT_LIST_DOMAINS_RUNNING
VIR_CONNECT_GET_ALL_DOMAINS_STATS_SHUTOFF | = | VIR_CONNECT_LIST_DOMAINS_SHUTOFF
VIR_CONNECT_GET_ALL_DOMAINS_STATS_TRANSIENT | = | VIR_CONNECT_LIST_DOMAINS_TRANSIENT
VIR_CONNECT_GET_ALL_DOMAINS_STATS_ENFORCE_STATS | = | 2147483648 | enforce requested stats

    }

### `virConnectListAllDomainsFlags`

    enum virConnectListAllDomainsFlags {

VIR_CONNECT_LIST_DOMAINS_ACTIVE | = | 1
VIR_CONNECT_LIST_DOMAINS_INACTIVE | = | 2
VIR_CONNECT_LIST_DOMAINS_PERSISTENT | = | 4
VIR_CONNECT_LIST_DOMAINS_TRANSIENT | = | 8
VIR_CONNECT_LIST_DOMAINS_RUNNING | = | 16
VIR_CONNECT_LIST_DOMAINS_PAUSED | = | 32
VIR_CONNECT_LIST_DOMAINS_SHUTOFF | = | 64
VIR_CONNECT_LIST_DOMAINS_OTHER | = | 128
VIR_CONNECT_LIST_DOMAINS_MANAGEDSAVE | = | 256
VIR_CONNECT_LIST_DOMAINS_NO_MANAGEDSAVE | = | 512
VIR_CONNECT_LIST_DOMAINS_AUTOSTART | = | 1024
VIR_CONNECT_LIST_DOMAINS_NO_AUTOSTART | = | 2048
VIR_CONNECT_LIST_DOMAINS_HAS_SNAPSHOT | = | 4096
VIR_CONNECT_LIST_DOMAINS_NO_SNAPSHOT | = | 8192

    }

### `virConnectListAllInterfacesFlags`

    enum virConnectListAllInterfacesFlags {

VIR_CONNECT_LIST_INTERFACES_INACTIVE | = | 1
VIR_CONNECT_LIST_INTERFACES_ACTIVE | = | 2

    }

### `virConnectListAllNetworksFlags`

    enum virConnectListAllNetworksFlags {

VIR_CONNECT_LIST_NETWORKS_INACTIVE | = | 1
VIR_CONNECT_LIST_NETWORKS_ACTIVE | = | 2
VIR_CONNECT_LIST_NETWORKS_PERSISTENT | = | 4
VIR_CONNECT_LIST_NETWORKS_TRANSIENT | = | 8
VIR_CONNECT_LIST_NETWORKS_AUTOSTART | = | 16
VIR_CONNECT_LIST_NETWORKS_NO_AUTOSTART | = | 32

    }

### `virConnectListAllNodeDeviceFlags`

    enum virConnectListAllNodeDeviceFlags {

VIR_CONNECT_LIST_NODE_DEVICES_CAP_SYSTEM | = | 1 | System capability
VIR_CONNECT_LIST_NODE_DEVICES_CAP_PCI_DEV | = | 2 | PCI device
VIR_CONNECT_LIST_NODE_DEVICES_CAP_USB_DEV | = | 4 | USB device
VIR_CONNECT_LIST_NODE_DEVICES_CAP_USB_INTERFACE | = | 8 | USB interface
VIR_CONNECT_LIST_NODE_DEVICES_CAP_NET | = | 16 | Network device
VIR_CONNECT_LIST_NODE_DEVICES_CAP_SCSI_HOST | = | 32 | SCSI Host Bus Adapter
VIR_CONNECT_LIST_NODE_DEVICES_CAP_SCSI_TARGET | = | 64 | SCSI Target
VIR_CONNECT_LIST_NODE_DEVICES_CAP_SCSI | = | 128 | SCSI device
VIR_CONNECT_LIST_NODE_DEVICES_CAP_STORAGE | = | 256 | Storage device
VIR_CONNECT_LIST_NODE_DEVICES_CAP_FC_HOST | = | 512 | FC Host Bus Adapter
VIR_CONNECT_LIST_NODE_DEVICES_CAP_VPORTS | = | 1024 | Capable of vport
VIR_CONNECT_LIST_NODE_DEVICES_CAP_SCSI_GENERIC | = | 2048 | Capable of scsi_generic

    }

### `virConnectListAllSecretsFlags`

    enum virConnectListAllSecretsFlags {

VIR_CONNECT_LIST_SECRETS_EPHEMERAL | = | 1 | kept in memory, never stored persistently
VIR_CONNECT_LIST_SECRETS_NO_EPHEMERAL | = | 2
VIR_CONNECT_LIST_SECRETS_PRIVATE | = | 4 | not revealed to any caller of libvirt, nor to any other node
VIR_CONNECT_LIST_SECRETS_NO_PRIVATE | = | 8

    }

### `virConnectListAllStoragePoolsFlags`

    enum virConnectListAllStoragePoolsFlags {

VIR_CONNECT_LIST_STORAGE_POOLS_INACTIVE | = | 1
VIR_CONNECT_LIST_STORAGE_POOLS_ACTIVE | = | 2
VIR_CONNECT_LIST_STORAGE_POOLS_PERSISTENT | = | 4
VIR_CONNECT_LIST_STORAGE_POOLS_TRANSIENT | = | 8
VIR_CONNECT_LIST_STORAGE_POOLS_AUTOSTART | = | 16
VIR_CONNECT_LIST_STORAGE_POOLS_NO_AUTOSTART | = | 32 | List pools by type
VIR_CONNECT_LIST_STORAGE_POOLS_DIR | = | 64
VIR_CONNECT_LIST_STORAGE_POOLS_FS | = | 128
VIR_CONNECT_LIST_STORAGE_POOLS_NETFS | = | 256
VIR_CONNECT_LIST_STORAGE_POOLS_LOGICAL | = | 512
VIR_CONNECT_LIST_STORAGE_POOLS_DISK | = | 1024
VIR_CONNECT_LIST_STORAGE_POOLS_ISCSI | = | 2048
VIR_CONNECT_LIST_STORAGE_POOLS_SCSI | = | 4096
VIR_CONNECT_LIST_STORAGE_POOLS_MPATH | = | 8192
VIR_CONNECT_LIST_STORAGE_POOLS_RBD | = | 16384
VIR_CONNECT_LIST_STORAGE_POOLS_SHEEPDOG | = | 32768
VIR_CONNECT_LIST_STORAGE_POOLS_GLUSTER | = | 65536
VIR_CONNECT_LIST_STORAGE_POOLS_ZFS | = | 131072

    }

### `virDomain`

    struct virDomain {

The content of this structure is not made public by the API

    }

### `virDomainBlockCommitFlags`

    enum virDomainBlockCommitFlags {

VIR_DOMAIN_BLOCK_COMMIT_SHALLOW | = | 1 | NULL base means next backing file, not whole chain
VIR_DOMAIN_BLOCK_COMMIT_DELETE | = | 2 | Delete any files that are now invalid after their contents have been committed
VIR_DOMAIN_BLOCK_COMMIT_ACTIVE | = | 4 | Allow a two-phase commit when top is the active layer
VIR_DOMAIN_BLOCK_COMMIT_RELATIVE | = | 8 | keep the backing chain referenced using relative names
VIR_DOMAIN_BLOCK_COMMIT_BANDWIDTH_BYTES | = | 16 | bandwidth in bytes/s instead of MiB/s

    }

### `virDomainBlockCopyFlags`

    enum virDomainBlockCopyFlags {

VIR_DOMAIN_BLOCK_COPY_SHALLOW | = | 1 | Limit copy to top of source backing chain
VIR_DOMAIN_BLOCK_COPY_REUSE_EXT | = | 2 | Reuse existing external file for a copy

    }

### `virDomainBlockInfo`

    struct virDomainBlockInfo {

unsigned long long | capacity | logical size in bytes of the block device backing image
unsigned long long | allocation | highest allocated extent in bytes of the block device backing image
unsigned long long | physical | physical size in bytes of the container of the backing image

    }

### `virDomainBlockJobAbortFlags`

    enum virDomainBlockJobAbortFlags {

VIR_DOMAIN_BLOCK_JOB_ABORT_ASYNC | = | 1
VIR_DOMAIN_BLOCK_JOB_ABORT_PIVOT | = | 2

    }

### `virDomainBlockJobInfo`

    struct virDomainBlockJobInfo {

int | type | virDomainBlockJobType
unsigned long | bandwidth | The following fields provide an indication of block job progress. @cur indicates the current position and will be between 0 and @end. @end is the final cursor position for this operation and represents completion. To approximate progress, divide @cur by @end.
virDomainBlockJobCursor | cur
virDomainBlockJobCursor | end

    }

### `virDomainBlockJobInfoFlags`

    enum virDomainBlockJobInfoFlags {

VIR_DOMAIN_BLOCK_JOB_INFO_BANDWIDTH_BYTES | = | 1 | bandwidth in bytes/s instead of MiB/s

    }

### `virDomainBlockJobSetSpeedFlags`

    enum virDomainBlockJobSetSpeedFlags {

VIR_DOMAIN_BLOCK_JOB_SPEED_BANDWIDTH_BYTES | = | 1 | bandwidth in bytes/s instead of MiB/s

    }

### `virDomainBlockJobType`

    enum virDomainBlockJobType {

VIR_DOMAIN_BLOCK_JOB_TYPE_UNKNOWN | = | 0 | Placeholder
VIR_DOMAIN_BLOCK_JOB_TYPE_PULL | = | 1 | Block Pull (virDomainBlockPull, or virDomainBlockRebase without flags), job ends on completion
VIR_DOMAIN_BLOCK_JOB_TYPE_COPY | = | 2 | Block Copy (virDomainBlockCopy, or virDomainBlockRebase with flags), job exists as long as mirroring is active
VIR_DOMAIN_BLOCK_JOB_TYPE_COMMIT | = | 3 | Block Commit (virDomainBlockCommit without flags), job ends on completion
VIR_DOMAIN_BLOCK_JOB_TYPE_ACTIVE_COMMIT | = | 4 | Active Block Commit (virDomainBlockCommit with flags), job exists as long as sync is active
VIR_DOMAIN_BLOCK_JOB_TYPE_LAST | = | 5

    }

### `virDomainBlockPullFlags`

    enum virDomainBlockPullFlags {

VIR_DOMAIN_BLOCK_PULL_BANDWIDTH_BYTES | = | 64 | bandwidth in bytes/s instead of MiB/s

    }

### `virDomainBlockRebaseFlags`

    enum virDomainBlockRebaseFlags {

VIR_DOMAIN_BLOCK_REBASE_SHALLOW | = | 1 | Limit copy to top of source backing chain
VIR_DOMAIN_BLOCK_REBASE_REUSE_EXT | = | 2 | Reuse existing external file for a copy
VIR_DOMAIN_BLOCK_REBASE_COPY_RAW | = | 4 | Make destination file raw
VIR_DOMAIN_BLOCK_REBASE_COPY | = | 8 | Start a copy job
VIR_DOMAIN_BLOCK_REBASE_RELATIVE | = | 16 | Keep backing chain referenced using relative names
VIR_DOMAIN_BLOCK_REBASE_COPY_DEV | = | 32 | Treat destination as block device instead of file
VIR_DOMAIN_BLOCK_REBASE_BANDWIDTH_BYTES | = | 64 | bandwidth in bytes/s instead of MiB/s

    }

### `virDomainBlockResizeFlags`

    enum virDomainBlockResizeFlags {

VIR_DOMAIN_BLOCK_RESIZE_BYTES | = | 1 | size in bytes instead of KiB

    }

### `virDomainBlockStatsStruct`

    struct virDomainBlockStatsStruct {

long long | rd_req | number of read requests
long long | rd_bytes | number of read bytes
long long | wr_req | number of write requests
long long | wr_bytes | number of written bytes
long long | errs | In Xen this returns the mysterious 'oo_req'.

    }

### `virDomainBlockedReason`

    enum virDomainBlockedReason {

VIR_DOMAIN_BLOCKED_UNKNOWN | = | 0 | the reason is unknown
VIR_DOMAIN_BLOCKED_LAST | = | 1

    }

### `virDomainChannelFlags`

    enum virDomainChannelFlags {

VIR_DOMAIN_CHANNEL_FORCE | = | 1 | abort a (possibly) active channel connection to force a new connection

    }

### `virDomainConsoleFlags`

    enum virDomainConsoleFlags {

VIR_DOMAIN_CONSOLE_FORCE | = | 1 | abort a (possibly) active console connection to force a new connection
VIR_DOMAIN_CONSOLE_SAFE | = | 2 | check if the console driver supports safe console operations

    }

### `virDomainControlInfo`

    struct virDomainControlInfo {

unsigned int | state | control state, one of virDomainControlState
unsigned int | details | state details, currently 0
unsigned long long | stateTime | for how long (in msec) control interface has been in current state (except for OK and ERROR states)

    }

### `virDomainControlState`

    enum virDomainControlState {

VIR_DOMAIN_CONTROL_OK | = | 0 | operational, ready to accept commands
VIR_DOMAIN_CONTROL_JOB | = | 1 | background job is running (can be monitored by virDomainGetJobInfo); only limited set of commands may be allowed
VIR_DOMAIN_CONTROL_OCCUPIED | = | 2 | occupied by a running command
VIR_DOMAIN_CONTROL_ERROR | = | 3 | unusable, domain cannot be fully operated
VIR_DOMAIN_CONTROL_LAST | = | 4

    }

### `virDomainCoreDumpFlags`

    enum virDomainCoreDumpFlags {

VIR_DUMP_CRASH | = | 1 | crash after dump
VIR_DUMP_LIVE | = | 2 | live dump
VIR_DUMP_BYPASS_CACHE | = | 4 | avoid file system cache pollution
VIR_DUMP_RESET | = | 8 | reset domain after dump finishes
VIR_DUMP_MEMORY_ONLY | = | 16 | use dump-guest-memory

    }

### `virDomainCoreDumpFormat`

    enum virDomainCoreDumpFormat {

VIR_DOMAIN_CORE_DUMP_FORMAT_RAW | = | 0 | dump guest memory in raw format
VIR_DOMAIN_CORE_DUMP_FORMAT_KDUMP_ZLIB | = | 1 | kdump-compressed format, with zlib compression
VIR_DOMAIN_CORE_DUMP_FORMAT_KDUMP_LZO | = | 2 | kdump-compressed format, with lzo compression
VIR_DOMAIN_CORE_DUMP_FORMAT_KDUMP_SNAPPY | = | 3 | kdump-compressed format, with snappy compression
VIR_DOMAIN_CORE_DUMP_FORMAT_LAST | = | 4 | NB: this enum value will increase over time as new events are added to the libvirt API. It reflects the last state supported by this version of the libvirt API.

    }

### `virDomainCrashedReason`

    enum virDomainCrashedReason {

VIR_DOMAIN_CRASHED_UNKNOWN | = | 0 | crashed for unknown reason
VIR_DOMAIN_CRASHED_PANICKED | = | 1 | domain panicked
VIR_DOMAIN_CRASHED_LAST | = | 2

    }

### `virDomainCreateFlags`

    enum virDomainCreateFlags {

VIR_DOMAIN_NONE | = | 0 | Default behavior
VIR_DOMAIN_START_PAUSED | = | 1 | Launch guest in paused state
VIR_DOMAIN_START_AUTODESTROY | = | 2 | Automatically kill guest when virConnectPtr is closed
VIR_DOMAIN_START_BYPASS_CACHE | = | 4 | Avoid file system cache pollution
VIR_DOMAIN_START_FORCE_BOOT | = | 8 | Boot, discarding any managed save

    }

### `virDomainDestroyFlagsValues`

    enum virDomainDestroyFlagsValues {

VIR_DOMAIN_DESTROY_DEFAULT | = | 0 | Default behavior - could lead to data loss!!
VIR_DOMAIN_DESTROY_GRACEFUL | = | 1 | only SIGTERM, no SIGKILL

    }

### `virDomainDeviceModifyFlags`

    enum virDomainDeviceModifyFlags {

VIR_DOMAIN_DEVICE_MODIFY_CONFIG | = | VIR_DOMAIN_AFFECT_CONFIG | Additionally, these flags may be bitwise-OR'd in.
VIR_DOMAIN_DEVICE_MODIFY_CURRENT | = | VIR_DOMAIN_AFFECT_CURRENT
VIR_DOMAIN_DEVICE_MODIFY_LIVE | = | VIR_DOMAIN_AFFECT_LIVE
VIR_DOMAIN_DEVICE_MODIFY_FORCE | = | 4 | Forcibly modify device (ex. force eject a cdrom)

    }

### `virDomainDiskError`

    struct virDomainDiskError {

char * | disk | disk target
int | error | virDomainDiskErrorCode

    }

### `virDomainDiskErrorCode`

    enum virDomainDiskErrorCode {

VIR_DOMAIN_DISK_ERROR_NONE | = | 0 | no error
VIR_DOMAIN_DISK_ERROR_UNSPEC | = | 1 | unspecified I/O error
VIR_DOMAIN_DISK_ERROR_NO_SPACE | = | 2 | no space left on the device
VIR_DOMAIN_DISK_ERROR_LAST | = | 3

    }

### `virDomainEventCrashedDetailType`

    enum virDomainEventCrashedDetailType {

VIR_DOMAIN_EVENT_CRASHED_PANICKED | = | 0 | Guest was panicked
VIR_DOMAIN_EVENT_CRASHED_LAST | = | 1

    }

### `virDomainEventDefinedDetailType`

    enum virDomainEventDefinedDetailType {

VIR_DOMAIN_EVENT_DEFINED_ADDED | = | 0 | Newly created config file
VIR_DOMAIN_EVENT_DEFINED_UPDATED | = | 1 | Changed config file
VIR_DOMAIN_EVENT_DEFINED_LAST | = | 2

    }

### `virDomainEventGraphicsAddress`

    struct virDomainEventGraphicsAddress {

int | family | Address family, virDomainEventGraphicsAddressType
char * | node | Address of node (eg IP address, or UNIX path)
char * | service | Service name/number (eg TCP port, or NULL)

    }

### `virDomainEventGraphicsAddressType`

    enum virDomainEventGraphicsAddressType {

VIR_DOMAIN_EVENT_GRAPHICS_ADDRESS_IPV4 | = | 0 | IPv4 address
VIR_DOMAIN_EVENT_GRAPHICS_ADDRESS_IPV6 | = | 1 | IPv6 address
VIR_DOMAIN_EVENT_GRAPHICS_ADDRESS_UNIX | = | 2 | UNIX socket path
VIR_DOMAIN_EVENT_GRAPHICS_ADDRESS_LAST | = | 3

    }

### `virDomainEventGraphicsPhase`

    enum virDomainEventGraphicsPhase {

VIR_DOMAIN_EVENT_GRAPHICS_CONNECT | = | 0 | Initial socket connection established
VIR_DOMAIN_EVENT_GRAPHICS_INITIALIZE | = | 1 | Authentication & setup completed
VIR_DOMAIN_EVENT_GRAPHICS_DISCONNECT | = | 2 | Final socket disconnection
VIR_DOMAIN_EVENT_GRAPHICS_LAST | = | 3

    }

### `virDomainEventGraphicsSubject`

    struct virDomainEventGraphicsSubject {

int | nidentity | Number of identities in arra
virDomainEventGraphicsSubjectIdentityPtr | identities | Array of identities for subject

    }

### `virDomainEventGraphicsSubjectIdentity`

    struct virDomainEventGraphicsSubjectIdentity {

char * | type | Type of identity
char * | name | Identity value

    }

### `virDomainEventID`

    enum virDomainEventID {

VIR_DOMAIN_EVENT_ID_LIFECYCLE | = | 0 | virConnectDomainEventCallback
VIR_DOMAIN_EVENT_ID_REBOOT | = | 1 | virConnectDomainEventGenericCallback
VIR_DOMAIN_EVENT_ID_RTC_CHANGE | = | 2 | virConnectDomainEventRTCChangeCallback
VIR_DOMAIN_EVENT_ID_WATCHDOG | = | 3 | virConnectDomainEventWatchdogCallback
VIR_DOMAIN_EVENT_ID_IO_ERROR | = | 4 | virConnectDomainEventIOErrorCallback
VIR_DOMAIN_EVENT_ID_GRAPHICS | = | 5 | virConnectDomainEventGraphicsCallback
VIR_DOMAIN_EVENT_ID_IO_ERROR_REASON | = | 6 | virConnectDomainEventIOErrorReasonCallback
VIR_DOMAIN_EVENT_ID_CONTROL_ERROR | = | 7 | virConnectDomainEventGenericCallback
VIR_DOMAIN_EVENT_ID_BLOCK_JOB | = | 8 | virConnectDomainEventBlockJobCallback
VIR_DOMAIN_EVENT_ID_DISK_CHANGE | = | 9 | virConnectDomainEventDiskChangeCallback
VIR_DOMAIN_EVENT_ID_TRAY_CHANGE | = | 10 | virConnectDomainEventTrayChangeCallback
VIR_DOMAIN_EVENT_ID_PMWAKEUP | = | 11 | virConnectDomainEventPMWakeupCallback
VIR_DOMAIN_EVENT_ID_PMSUSPEND | = | 12 | virConnectDomainEventPMSuspendCallback
VIR_DOMAIN_EVENT_ID_BALLOON_CHANGE | = | 13 | virConnectDomainEventBalloonChangeCallback
VIR_DOMAIN_EVENT_ID_PMSUSPEND_DISK | = | 14 | virConnectDomainEventPMSuspendDiskCallback
VIR_DOMAIN_EVENT_ID_DEVICE_REMOVED | = | 15 | virConnectDomainEventDeviceRemovedCallback
VIR_DOMAIN_EVENT_ID_BLOCK_JOB_2 | = | 16 | virConnectDomainEventBlockJobCallback
VIR_DOMAIN_EVENT_ID_TUNABLE | = | 17 | virConnectDomainEventTunableCallback
VIR_DOMAIN_EVENT_ID_LAST | = | 18 | NB: this enum value will increase over time as new events are added to the libvirt API. It reflects the last event ID supported by this version of the libvirt API.

    }

### `virDomainEventIOErrorAction`

    enum virDomainEventIOErrorAction {

VIR_DOMAIN_EVENT_IO_ERROR_NONE | = | 0 | No action, IO error ignored
VIR_DOMAIN_EVENT_IO_ERROR_PAUSE | = | 1 | Guest CPUs are paused
VIR_DOMAIN_EVENT_IO_ERROR_REPORT | = | 2 | IO error reported to guest OS
VIR_DOMAIN_EVENT_IO_ERROR_LAST | = | 3

    }

### `virDomainEventPMSuspendedDetailType`

    enum virDomainEventPMSuspendedDetailType {

VIR_DOMAIN_EVENT_PMSUSPENDED_MEMORY | = | 0 | Guest was PM suspended to memory
VIR_DOMAIN_EVENT_PMSUSPENDED_DISK | = | 1 | Guest was PM suspended to disk
VIR_DOMAIN_EVENT_PMSUSPENDED_LAST | = | 2

    }

### `virDomainEventResumedDetailType`

    enum virDomainEventResumedDetailType {

VIR_DOMAIN_EVENT_RESUMED_UNPAUSED | = | 0 | Normal resume due to admin unpause
VIR_DOMAIN_EVENT_RESUMED_MIGRATED | = | 1 | Resumed for completion of migration
VIR_DOMAIN_EVENT_RESUMED_FROM_SNAPSHOT | = | 2 | Resumed from snapshot
VIR_DOMAIN_EVENT_RESUMED_LAST | = | 3

    }

### `virDomainEventShutdownDetailType`

    enum virDomainEventShutdownDetailType {

VIR_DOMAIN_EVENT_SHUTDOWN_FINISHED | = | 0 | Guest finished shutdown sequence
VIR_DOMAIN_EVENT_SHUTDOWN_LAST | = | 1

    }

### `virDomainEventStartedDetailType`

    enum virDomainEventStartedDetailType {

VIR_DOMAIN_EVENT_STARTED_BOOTED | = | 0 | Normal startup from boot
VIR_DOMAIN_EVENT_STARTED_MIGRATED | = | 1 | Incoming migration from another host
VIR_DOMAIN_EVENT_STARTED_RESTORED | = | 2 | Restored from a state file
VIR_DOMAIN_EVENT_STARTED_FROM_SNAPSHOT | = | 3 | Restored from snapshot
VIR_DOMAIN_EVENT_STARTED_WAKEUP | = | 4 | Started due to wakeup event
VIR_DOMAIN_EVENT_STARTED_LAST | = | 5

    }

### `virDomainEventStoppedDetailType`

    enum virDomainEventStoppedDetailType {

VIR_DOMAIN_EVENT_STOPPED_SHUTDOWN | = | 0 | Normal shutdown
VIR_DOMAIN_EVENT_STOPPED_DESTROYED | = | 1 | Forced poweroff from host
VIR_DOMAIN_EVENT_STOPPED_CRASHED | = | 2 | Guest crashed
VIR_DOMAIN_EVENT_STOPPED_MIGRATED | = | 3 | Migrated off to another host
VIR_DOMAIN_EVENT_STOPPED_SAVED | = | 4 | Saved to a state file
VIR_DOMAIN_EVENT_STOPPED_FAILED | = | 5 | Host emulator/mgmt failed
VIR_DOMAIN_EVENT_STOPPED_FROM_SNAPSHOT | = | 6 | offline snapshot loaded
VIR_DOMAIN_EVENT_STOPPED_LAST | = | 7

    }

### `virDomainEventSuspendedDetailType`

    enum virDomainEventSuspendedDetailType {

VIR_DOMAIN_EVENT_SUSPENDED_PAUSED | = | 0 | Normal suspend due to admin pause
VIR_DOMAIN_EVENT_SUSPENDED_MIGRATED | = | 1 | Suspended for offline migration
VIR_DOMAIN_EVENT_SUSPENDED_IOERROR | = | 2 | Suspended due to a disk I/O error
VIR_DOMAIN_EVENT_SUSPENDED_WATCHDOG | = | 3 | Suspended due to a watchdog firing
VIR_DOMAIN_EVENT_SUSPENDED_RESTORED | = | 4 | Restored from paused state file
VIR_DOMAIN_EVENT_SUSPENDED_FROM_SNAPSHOT | = | 5 | Restored from paused snapshot
VIR_DOMAIN_EVENT_SUSPENDED_API_ERROR | = | 6 | suspended after failure during libvirt API call
VIR_DOMAIN_EVENT_SUSPENDED_LAST | = | 7

    }

### `virDomainEventTrayChangeReason`

    enum virDomainEventTrayChangeReason {

VIR_DOMAIN_EVENT_TRAY_CHANGE_OPEN | = | 0
VIR_DOMAIN_EVENT_TRAY_CHANGE_CLOSE | = | 1
VIR_DOMAIN_EVENT_TRAY_CHANGE_LAST | = | 2

    }

### `virDomainEventType`

    enum virDomainEventType {

VIR_DOMAIN_EVENT_DEFINED | = | 0
VIR_DOMAIN_EVENT_UNDEFINED | = | 1
VIR_DOMAIN_EVENT_STARTED | = | 2
VIR_DOMAIN_EVENT_SUSPENDED | = | 3
VIR_DOMAIN_EVENT_RESUMED | = | 4
VIR_DOMAIN_EVENT_STOPPED | = | 5
VIR_DOMAIN_EVENT_SHUTDOWN | = | 6
VIR_DOMAIN_EVENT_PMSUSPENDED | = | 7
VIR_DOMAIN_EVENT_CRASHED | = | 8
VIR_DOMAIN_EVENT_LAST | = | 9

    }

### `virDomainEventUndefinedDetailType`

    enum virDomainEventUndefinedDetailType {

VIR_DOMAIN_EVENT_UNDEFINED_REMOVED | = | 0 | Deleted the config file
VIR_DOMAIN_EVENT_UNDEFINED_LAST | = | 1

    }

### `virDomainEventWatchdogAction`

    enum virDomainEventWatchdogAction {

VIR_DOMAIN_EVENT_WATCHDOG_NONE | = | 0 | No action, watchdog ignored
VIR_DOMAIN_EVENT_WATCHDOG_PAUSE | = | 1 | Guest CPUs are paused
VIR_DOMAIN_EVENT_WATCHDOG_RESET | = | 2 | Guest CPUs are reset
VIR_DOMAIN_EVENT_WATCHDOG_POWEROFF | = | 3 | Guest is forcibly powered off
VIR_DOMAIN_EVENT_WATCHDOG_SHUTDOWN | = | 4 | Guest is requested to gracefully shutdown
VIR_DOMAIN_EVENT_WATCHDOG_DEBUG | = | 5 | No action, a debug message logged
VIR_DOMAIN_EVENT_WATCHDOG_LAST | = | 6

    }

### `virDomainGetJobStatsFlags`

    enum virDomainGetJobStatsFlags {

VIR_DOMAIN_JOB_STATS_COMPLETED | = | 1 | return stats of a recently completed job

    }

### `virDomainInfo`

    struct virDomainInfo {

unsigned char | state | the running state, one of virDomainState
unsigned long | maxMem | the maximum memory in KBytes allowed
unsigned long | memory | the memory in KBytes used by the domain
unsigned short | nrVirtCpu | the number of virtual CPUs for the domain
unsigned long long | cpuTime | the CPU time used in nanoseconds

    }

### `virDomainInterfaceStatsStruct`

    struct virDomainInterfaceStatsStruct {

long long | rx_bytes
long long | rx_packets
long long | rx_errs
long long | rx_drop
long long | tx_bytes
long long | tx_packets
long long | tx_errs
long long | tx_drop

    }

### `virDomainJobInfo`

    struct virDomainJobInfo {

int | type | Time is measured in milliseconds
unsigned long long | timeElapsed | Always set

unsigned long long

timeRemaining

Only for VIR_DOMAIN_JOB_BOUNDED Data is measured in bytes unless otherwise specified and is measuring the job as a whole. For VIR_DOMAIN_JOB_UNBOUNDED, dataTotal may be less than the final sum of dataProcessed + dataRemaining in the event that the hypervisor has to repeat some data, such as due to dirtied pages during migration. For VIR_DOMAIN_JOB_BOUNDED, dataTotal shall always equal the sum of dataProcessed + dataRemaining.

unsigned long long | dataTotal
unsigned long long | dataProcessed
unsigned long long | dataRemaining | As above, but only tracking guest memory progress
unsigned long long | memTotal
unsigned long long | memProcessed
unsigned long long | memRemaining | As above, but only tracking guest disk file progress
unsigned long long | fileTotal
unsigned long long | fileProcessed
unsigned long long | fileRemaining

    }

### `virDomainJobType`

    enum virDomainJobType {

VIR_DOMAIN_JOB_NONE | = | 0 | No job is active
VIR_DOMAIN_JOB_BOUNDED | = | 1 | Job with a finite completion time
VIR_DOMAIN_JOB_UNBOUNDED | = | 2 | Job without a finite completion time
VIR_DOMAIN_JOB_COMPLETED | = | 3 | Job has finished, but isn't cleaned up
VIR_DOMAIN_JOB_FAILED | = | 4 | Job hit error, but isn't cleaned up
VIR_DOMAIN_JOB_CANCELLED | = | 5 | Job was aborted, but isn't cleaned up
VIR_DOMAIN_JOB_LAST | = | 6

    }

### `virDomainMemoryFlags`

    enum virDomainMemoryFlags {

VIR_MEMORY_VIRTUAL | = | 1 | addresses are virtual addresses
VIR_MEMORY_PHYSICAL | = | 2 | addresses are physical addresses

    }

### `virDomainMemoryModFlags`

    enum virDomainMemoryModFlags {

VIR_DOMAIN_MEM_CONFIG | = | VIR_DOMAIN_AFFECT_CONFIG | Additionally, these flags may be bitwise-OR'd in.
VIR_DOMAIN_MEM_CURRENT | = | VIR_DOMAIN_AFFECT_CURRENT
VIR_DOMAIN_MEM_LIVE | = | VIR_DOMAIN_AFFECT_LIVE
VIR_DOMAIN_MEM_MAXIMUM | = | 4 | affect Max rather than current

    }

### `virDomainMemoryStatStruct`

    struct virDomainMemoryStatStruct {

int | tag
unsigned long long | val

    }

### `virDomainMemoryStatTags`

    enum virDomainMemoryStatTags {

VIR_DOMAIN_MEMORY_STAT_LAST | = | VIR_DOMAIN_MEMORY_STAT_NR
VIR_DOMAIN_MEMORY_STAT_SWAP_IN | = | 0 | The total amount of memory written out to swap space (in kB).
VIR_DOMAIN_MEMORY_STAT_SWAP_OUT | = | 1 | Page faults occur when a process makes a valid access to virtual memory that is not available. When servicing the page fault, if disk IO is required, it is considered a major fault. If not, it is a minor fault. These are expressed as the number of faults that have occurred.
VIR_DOMAIN_MEMORY_STAT_MAJOR_FAULT | = | 2
VIR_DOMAIN_MEMORY_STAT_MINOR_FAULT | = | 3 | The amount of memory left completely unused by the system. Memory that is available but used for reclaimable caches should NOT be reported as free. This value is expressed in kB.
VIR_DOMAIN_MEMORY_STAT_UNUSED | = | 4 | The total amount of usable memory as seen by the domain. This value may be less than the amount of memory assigned to the domain if a balloon driver is in use or if the guest OS does not initialize all assigned pages. This value is expressed in kB.
VIR_DOMAIN_MEMORY_STAT_AVAILABLE | = | 5 | Current balloon value (in KB).
VIR_DOMAIN_MEMORY_STAT_ACTUAL_BALLOON | = | 6 | Resident Set Size of the process running the domain. This value is in kB
VIR_DOMAIN_MEMORY_STAT_RSS | = | 7 | The number of statistics supported by this version of the interface. To add new statistics, add them to the enum and increase this value.
VIR_DOMAIN_MEMORY_STAT_NR | = | 8

    }

### `virDomainMetadataType`

    enum virDomainMetadataType {

VIR_DOMAIN_METADATA_DESCRIPTION | = | 0 | Operate on <description>
VIR_DOMAIN_METADATA_TITLE | = | 1 | Operate on <title>
VIR_DOMAIN_METADATA_ELEMENT | = | 2 | Operate on <metadata>
VIR_DOMAIN_METADATA_LAST | = | 3

    }

### `virDomainMigrateFlags`

    enum virDomainMigrateFlags {

VIR_MIGRATE_LIVE | = | 1 | live migration
VIR_MIGRATE_PEER2PEER | = | 2 | direct source -> dest host control channel Note the less-common spelling that we're stuck with: VIR_MIGRATE_TUNNELLED should be VIR_MIGRATE_TUNNELED
VIR_MIGRATE_TUNNELLED | = | 4 | tunnel migration data over libvirtd connection
VIR_MIGRATE_PERSIST_DEST | = | 8 | persist the VM on the destination
VIR_MIGRATE_UNDEFINE_SOURCE | = | 16 | undefine the VM on the source
VIR_MIGRATE_PAUSED | = | 32 | pause on remote side
VIR_MIGRATE_NON_SHARED_DISK | = | 64 | migration with non-shared storage with full disk copy
VIR_MIGRATE_NON_SHARED_INC | = | 128 | migration with non-shared storage with incremental copy (same base image shared between source and destination)
VIR_MIGRATE_CHANGE_PROTECTION | = | 256 | protect for changing domain configuration through the whole migration process; this will be used automatically when supported
VIR_MIGRATE_UNSAFE | = | 512 | force migration even if it is considered unsafe
VIR_MIGRATE_OFFLINE | = | 1024 | offline migrate
VIR_MIGRATE_COMPRESSED | = | 2048 | compress data during migration
VIR_MIGRATE_ABORT_ON_ERROR | = | 4096 | abort migration on I/O errors happened during migration
VIR_MIGRATE_AUTO_CONVERGE | = | 8192 | force convergence
VIR_MIGRATE_RDMA_PIN_ALL | = | 16384 | RDMA memory pinning

    }

### `virDomainModificationImpact`

    enum virDomainModificationImpact {

VIR_DOMAIN_AFFECT_CURRENT | = | 0 | Affect current domain state.
VIR_DOMAIN_AFFECT_LIVE | = | 1 | Affect running domain state.
VIR_DOMAIN_AFFECT_CONFIG | = | 2 | Affect persistent domain state. 1 << 2 is reserved for virTypedParameterFlags

    }

### `virDomainNostateReason`

    enum virDomainNostateReason {

VIR_DOMAIN_NOSTATE_UNKNOWN | = | 0
VIR_DOMAIN_NOSTATE_LAST | = | 1

    }

### `virDomainNumatuneMemMode`

    enum virDomainNumatuneMemMode {

VIR_DOMAIN_NUMATUNE_MEM_STRICT | = | 0
VIR_DOMAIN_NUMATUNE_MEM_PREFERRED | = | 1
VIR_DOMAIN_NUMATUNE_MEM_INTERLEAVE | = | 2
VIR_DOMAIN_NUMATUNE_MEM_LAST | = | 3 | This constant is subject to change

    }

### `virDomainOpenGraphicsFlags`

    enum virDomainOpenGraphicsFlags {

VIR_DOMAIN_OPEN_GRAPHICS_SKIPAUTH | = | 1

    }

### `virDomainPMSuspendedDiskReason`

    enum virDomainPMSuspendedDiskReason {

VIR_DOMAIN_PMSUSPENDED_DISK_UNKNOWN | = | 0
VIR_DOMAIN_PMSUSPENDED_DISK_LAST | = | 1

    }

### `virDomainPMSuspendedReason`

    enum virDomainPMSuspendedReason {

VIR_DOMAIN_PMSUSPENDED_UNKNOWN | = | 0
VIR_DOMAIN_PMSUSPENDED_LAST | = | 1

    }

### `virDomainPausedReason`

    enum virDomainPausedReason {

VIR_DOMAIN_PAUSED_UNKNOWN | = | 0 | the reason is unknown
VIR_DOMAIN_PAUSED_USER | = | 1 | paused on user request
VIR_DOMAIN_PAUSED_MIGRATION | = | 2 | paused for offline migration
VIR_DOMAIN_PAUSED_SAVE | = | 3 | paused for save
VIR_DOMAIN_PAUSED_DUMP | = | 4 | paused for offline core dump
VIR_DOMAIN_PAUSED_IOERROR | = | 5 | paused due to a disk I/O error
VIR_DOMAIN_PAUSED_WATCHDOG | = | 6 | paused due to a watchdog event
VIR_DOMAIN_PAUSED_FROM_SNAPSHOT | = | 7 | paused after restoring from snapshot
VIR_DOMAIN_PAUSED_SHUTTING_DOWN | = | 8 | paused during shutdown process
VIR_DOMAIN_PAUSED_SNAPSHOT | = | 9 | paused while creating a snapshot
VIR_DOMAIN_PAUSED_CRASHED | = | 10 | paused due to a guest crash
VIR_DOMAIN_PAUSED_LAST | = | 11

    }

### `virDomainProcessSignal`

    enum virDomainProcessSignal {

VIR_DOMAIN_PROCESS_SIGNAL_NOP | = | 0 | No constant in POSIX/Linux
VIR_DOMAIN_PROCESS_SIGNAL_HUP | = | 1 | SIGHUP
VIR_DOMAIN_PROCESS_SIGNAL_INT | = | 2 | SIGINT
VIR_DOMAIN_PROCESS_SIGNAL_QUIT | = | 3 | SIGQUIT
VIR_DOMAIN_PROCESS_SIGNAL_ILL | = | 4 | SIGILL
VIR_DOMAIN_PROCESS_SIGNAL_TRAP | = | 5 | SIGTRAP
VIR_DOMAIN_PROCESS_SIGNAL_ABRT | = | 6 | SIGABRT
VIR_DOMAIN_PROCESS_SIGNAL_BUS | = | 7 | SIGBUS
VIR_DOMAIN_PROCESS_SIGNAL_FPE | = | 8 | SIGFPE
VIR_DOMAIN_PROCESS_SIGNAL_KILL | = | 9 | SIGKILL
VIR_DOMAIN_PROCESS_SIGNAL_USR1 | = | 10 | SIGUSR1
VIR_DOMAIN_PROCESS_SIGNAL_SEGV | = | 11 | SIGSEGV
VIR_DOMAIN_PROCESS_SIGNAL_USR2 | = | 12 | SIGUSR2
VIR_DOMAIN_PROCESS_SIGNAL_PIPE | = | 13 | SIGPIPE
VIR_DOMAIN_PROCESS_SIGNAL_ALRM | = | 14 | SIGALRM
VIR_DOMAIN_PROCESS_SIGNAL_TERM | = | 15 | SIGTERM
VIR_DOMAIN_PROCESS_SIGNAL_STKFLT | = | 16 | Not in POSIX (SIGSTKFLT on Linux
VIR_DOMAIN_PROCESS_SIGNAL_CHLD | = | 17 | SIGCHLD
VIR_DOMAIN_PROCESS_SIGNAL_CONT | = | 18 | SIGCONT
VIR_DOMAIN_PROCESS_SIGNAL_STOP | = | 19 | SIGSTOP
VIR_DOMAIN_PROCESS_SIGNAL_TSTP | = | 20 | SIGTSTP
VIR_DOMAIN_PROCESS_SIGNAL_TTIN | = | 21 | SIGTTIN
VIR_DOMAIN_PROCESS_SIGNAL_TTOU | = | 22 | SIGTTOU
VIR_DOMAIN_PROCESS_SIGNAL_URG | = | 23 | SIGURG
VIR_DOMAIN_PROCESS_SIGNAL_XCPU | = | 24 | SIGXCPU
VIR_DOMAIN_PROCESS_SIGNAL_XFSZ | = | 25 | SIGXFSZ
VIR_DOMAIN_PROCESS_SIGNAL_VTALRM | = | 26 | SIGVTALRM
VIR_DOMAIN_PROCESS_SIGNAL_PROF | = | 27 | SIGPROF
VIR_DOMAIN_PROCESS_SIGNAL_WINCH | = | 28 | Not in POSIX (SIGWINCH on Linux)
VIR_DOMAIN_PROCESS_SIGNAL_POLL | = | 29 | SIGPOLL (also known as SIGIO on Linux)
VIR_DOMAIN_PROCESS_SIGNAL_PWR | = | 30 | Not in POSIX (SIGPWR on Linux)
VIR_DOMAIN_PROCESS_SIGNAL_SYS | = | 31 | SIGSYS (also known as SIGUNUSED on Linux)
VIR_DOMAIN_PROCESS_SIGNAL_RT0 | = | 32 | SIGRTMIN
VIR_DOMAIN_PROCESS_SIGNAL_RT1 | = | 33 | SIGRTMIN + 1
VIR_DOMAIN_PROCESS_SIGNAL_RT2 | = | 34 | SIGRTMIN + 2
VIR_DOMAIN_PROCESS_SIGNAL_RT3 | = | 35 | SIGRTMIN + 3
VIR_DOMAIN_PROCESS_SIGNAL_RT4 | = | 36 | SIGRTMIN + 4
VIR_DOMAIN_PROCESS_SIGNAL_RT5 | = | 37 | SIGRTMIN + 5
VIR_DOMAIN_PROCESS_SIGNAL_RT6 | = | 38 | SIGRTMIN + 6
VIR_DOMAIN_PROCESS_SIGNAL_RT7 | = | 39 | SIGRTMIN + 7
VIR_DOMAIN_PROCESS_SIGNAL_RT8 | = | 40 | SIGRTMIN + 8
VIR_DOMAIN_PROCESS_SIGNAL_RT9 | = | 41 | SIGRTMIN + 9
VIR_DOMAIN_PROCESS_SIGNAL_RT10 | = | 42 | SIGRTMIN + 10
VIR_DOMAIN_PROCESS_SIGNAL_RT11 | = | 43 | SIGRTMIN + 11
VIR_DOMAIN_PROCESS_SIGNAL_RT12 | = | 44 | SIGRTMIN + 12
VIR_DOMAIN_PROCESS_SIGNAL_RT13 | = | 45 | SIGRTMIN + 13
VIR_DOMAIN_PROCESS_SIGNAL_RT14 | = | 46 | SIGRTMIN + 14
VIR_DOMAIN_PROCESS_SIGNAL_RT15 | = | 47 | SIGRTMIN + 15
VIR_DOMAIN_PROCESS_SIGNAL_RT16 | = | 48 | SIGRTMIN + 16
VIR_DOMAIN_PROCESS_SIGNAL_RT17 | = | 49 | SIGRTMIN + 17
VIR_DOMAIN_PROCESS_SIGNAL_RT18 | = | 50 | SIGRTMIN + 18
VIR_DOMAIN_PROCESS_SIGNAL_RT19 | = | 51 | SIGRTMIN + 19
VIR_DOMAIN_PROCESS_SIGNAL_RT20 | = | 52 | SIGRTMIN + 20
VIR_DOMAIN_PROCESS_SIGNAL_RT21 | = | 53 | SIGRTMIN + 21
VIR_DOMAIN_PROCESS_SIGNAL_RT22 | = | 54 | SIGRTMIN + 22
VIR_DOMAIN_PROCESS_SIGNAL_RT23 | = | 55 | SIGRTMIN + 23
VIR_DOMAIN_PROCESS_SIGNAL_RT24 | = | 56 | SIGRTMIN + 24
VIR_DOMAIN_PROCESS_SIGNAL_RT25 | = | 57 | SIGRTMIN + 25
VIR_DOMAIN_PROCESS_SIGNAL_RT26 | = | 58 | SIGRTMIN + 26
VIR_DOMAIN_PROCESS_SIGNAL_RT27 | = | 59 | SIGRTMIN + 27
VIR_DOMAIN_PROCESS_SIGNAL_RT28 | = | 60 | SIGRTMIN + 28
VIR_DOMAIN_PROCESS_SIGNAL_RT29 | = | 61 | SIGRTMIN + 29
VIR_DOMAIN_PROCESS_SIGNAL_RT30 | = | 62 | SIGRTMIN + 30
VIR_DOMAIN_PROCESS_SIGNAL_RT31 | = | 63 | SIGRTMIN + 31
VIR_DOMAIN_PROCESS_SIGNAL_RT32 | = | 64 | SIGRTMIN + 32 / SIGRTMAX
VIR_DOMAIN_PROCESS_SIGNAL_LAST | = | 65

    }

### `virDomainRebootFlagValues`

    enum virDomainRebootFlagValues {

VIR_DOMAIN_REBOOT_DEFAULT | = | 0 | hypervisor choice
VIR_DOMAIN_REBOOT_ACPI_POWER_BTN | = | 1 | Send ACPI event
VIR_DOMAIN_REBOOT_GUEST_AGENT | = | 2 | Use guest agent
VIR_DOMAIN_REBOOT_INITCTL | = | 4 | Use initctl
VIR_DOMAIN_REBOOT_SIGNAL | = | 8 | Send a signal
VIR_DOMAIN_REBOOT_PARAVIRT | = | 16 | Use paravirt guest control

    }

### `virDomainRunningReason`

    enum virDomainRunningReason {

VIR_DOMAIN_RUNNING_UNKNOWN | = | 0
VIR_DOMAIN_RUNNING_BOOTED | = | 1 | normal startup from boot
VIR_DOMAIN_RUNNING_MIGRATED | = | 2 | migrated from another host
VIR_DOMAIN_RUNNING_RESTORED | = | 3 | restored from a state file
VIR_DOMAIN_RUNNING_FROM_SNAPSHOT | = | 4 | restored from snapshot
VIR_DOMAIN_RUNNING_UNPAUSED | = | 5 | returned from paused state
VIR_DOMAIN_RUNNING_MIGRATION_CANCELED | = | 6 | returned from migration
VIR_DOMAIN_RUNNING_SAVE_CANCELED | = | 7 | returned from failed save process
VIR_DOMAIN_RUNNING_WAKEUP | = | 8 | returned from pmsuspended due to wakeup event
VIR_DOMAIN_RUNNING_CRASHED | = | 9 | resumed from crashed
VIR_DOMAIN_RUNNING_LAST | = | 10

    }

### `virDomainSaveRestoreFlags`

    enum virDomainSaveRestoreFlags {

VIR_DOMAIN_SAVE_BYPASS_CACHE | = | 1 | Avoid file system cache pollution
VIR_DOMAIN_SAVE_RUNNING | = | 2 | Favor running over paused
VIR_DOMAIN_SAVE_PAUSED | = | 4 | Favor paused over running

    }

### `virDomainSetTimeFlags`

    enum virDomainSetTimeFlags {

VIR_DOMAIN_TIME_SYNC | = | 1 | Re-sync domain time from domain's RTC

    }

### `virDomainShutdownFlagValues`

    enum virDomainShutdownFlagValues {

VIR_DOMAIN_SHUTDOWN_DEFAULT | = | 0 | hypervisor choice
VIR_DOMAIN_SHUTDOWN_ACPI_POWER_BTN | = | 1 | Send ACPI event
VIR_DOMAIN_SHUTDOWN_GUEST_AGENT | = | 2 | Use guest agent
VIR_DOMAIN_SHUTDOWN_INITCTL | = | 4 | Use initctl
VIR_DOMAIN_SHUTDOWN_SIGNAL | = | 8 | Send a signal
VIR_DOMAIN_SHUTDOWN_PARAVIRT | = | 16 | Use paravirt guest control

    }

### `virDomainShutdownReason`

    enum virDomainShutdownReason {

VIR_DOMAIN_SHUTDOWN_UNKNOWN | = | 0 | the reason is unknown
VIR_DOMAIN_SHUTDOWN_USER | = | 1 | shutting down on user request
VIR_DOMAIN_SHUTDOWN_LAST | = | 2

    }

### `virDomainShutoffReason`

    enum virDomainShutoffReason {

VIR_DOMAIN_SHUTOFF_UNKNOWN | = | 0 | the reason is unknown
VIR_DOMAIN_SHUTOFF_SHUTDOWN | = | 1 | normal shutdown
VIR_DOMAIN_SHUTOFF_DESTROYED | = | 2 | forced poweroff
VIR_DOMAIN_SHUTOFF_CRASHED | = | 3 | domain crashed
VIR_DOMAIN_SHUTOFF_MIGRATED | = | 4 | migrated to another host
VIR_DOMAIN_SHUTOFF_SAVED | = | 5 | saved to a file
VIR_DOMAIN_SHUTOFF_FAILED | = | 6 | domain failed to start
VIR_DOMAIN_SHUTOFF_FROM_SNAPSHOT | = | 7 | restored from a snapshot which was taken while domain was shutoff
VIR_DOMAIN_SHUTOFF_LAST | = | 8

    }

### `virDomainSnapshot`

    struct virDomainSnapshot {

The content of this structure is not made public by the API

    }

### `virDomainSnapshotCreateFlags`

    enum virDomainSnapshotCreateFlags {

VIR_DOMAIN_SNAPSHOT_CREATE_REDEFINE | = | 1 | Restore or alter metadata
VIR_DOMAIN_SNAPSHOT_CREATE_CURRENT | = | 2 | With redefine, make snapshot current
VIR_DOMAIN_SNAPSHOT_CREATE_NO_METADATA | = | 4 | Make snapshot without remembering it
VIR_DOMAIN_SNAPSHOT_CREATE_HALT | = | 8 | Stop running guest after snapshot
VIR_DOMAIN_SNAPSHOT_CREATE_DISK_ONLY | = | 16 | disk snapshot, not system checkpoint
VIR_DOMAIN_SNAPSHOT_CREATE_REUSE_EXT | = | 32 | reuse any existing external files
VIR_DOMAIN_SNAPSHOT_CREATE_QUIESCE | = | 64 | use guest agent to quiesce all mounted file systems within the domain
VIR_DOMAIN_SNAPSHOT_CREATE_ATOMIC | = | 128 | atomically avoid partial changes
VIR_DOMAIN_SNAPSHOT_CREATE_LIVE | = | 256 | create the snapshot while the guest is running

    }

### `virDomainSnapshotDeleteFlags`

    enum virDomainSnapshotDeleteFlags {

VIR_DOMAIN_SNAPSHOT_DELETE_CHILDREN | = | 1 | Also delete children
VIR_DOMAIN_SNAPSHOT_DELETE_METADATA_ONLY | = | 2 | Delete just metadata
VIR_DOMAIN_SNAPSHOT_DELETE_CHILDREN_ONLY | = | 4 | Delete just children

    }

### `virDomainSnapshotListFlags`

    enum virDomainSnapshotListFlags {

VIR_DOMAIN_SNAPSHOT_LIST_DESCENDANTS | = | 1 | List all descendants, not just children, when listing a snapshot For historical reasons, groups do not use contiguous bits.
VIR_DOMAIN_SNAPSHOT_LIST_ROOTS | = | 1 | Filter by snapshots with no parents, when listing a domain
VIR_DOMAIN_SNAPSHOT_LIST_METADATA | = | 2 | Filter by snapshots which have metadata
VIR_DOMAIN_SNAPSHOT_LIST_LEAVES | = | 4 | Filter by snapshots with no children
VIR_DOMAIN_SNAPSHOT_LIST_NO_LEAVES | = | 8 | Filter by snapshots that have children
VIR_DOMAIN_SNAPSHOT_LIST_NO_METADATA | = | 16 | Filter by snapshots with no metadata
VIR_DOMAIN_SNAPSHOT_LIST_INACTIVE | = | 32 | Filter by snapshots taken while guest was shut off
VIR_DOMAIN_SNAPSHOT_LIST_ACTIVE | = | 64 | Filter by snapshots taken while guest was active, and with memory state
VIR_DOMAIN_SNAPSHOT_LIST_DISK_ONLY | = | 128 | Filter by snapshots taken while guest was active, but without memory state
VIR_DOMAIN_SNAPSHOT_LIST_INTERNAL | = | 256 | Filter by snapshots stored internal to disk images
VIR_DOMAIN_SNAPSHOT_LIST_EXTERNAL | = | 512 | Filter by snapshots that use files external to disk images

    }

### `virDomainSnapshotRevertFlags`

    enum virDomainSnapshotRevertFlags {

VIR_DOMAIN_SNAPSHOT_REVERT_RUNNING | = | 1 | Run after revert
VIR_DOMAIN_SNAPSHOT_REVERT_PAUSED | = | 2 | Pause after revert
VIR_DOMAIN_SNAPSHOT_REVERT_FORCE | = | 4 | Allow risky reverts

    }

### `virDomainState`

    enum virDomainState {

VIR_DOMAIN_NOSTATE | = | 0 | no state
VIR_DOMAIN_RUNNING | = | 1 | the domain is running
VIR_DOMAIN_BLOCKED | = | 2 | the domain is blocked on resource
VIR_DOMAIN_PAUSED | = | 3 | the domain is paused by user
VIR_DOMAIN_SHUTDOWN | = | 4 | the domain is being shut down
VIR_DOMAIN_SHUTOFF | = | 5 | the domain is shut off
VIR_DOMAIN_CRASHED | = | 6 | the domain is crashed
VIR_DOMAIN_PMSUSPENDED | = | 7 | the domain is suspended by guest power management
VIR_DOMAIN_LAST | = | 8 | NB: this enum value will increase over time as new events are added to the libvirt API. It reflects the last state supported by this version of the libvirt API.

    }

### `virDomainStatsRecord`

    struct virDomainStatsRecord {

virDomainPtr | dom
virTypedParameterPtr | params
int | nparams

    }

### `virDomainStatsTypes`

    enum virDomainStatsTypes {

VIR_DOMAIN_STATS_STATE | = | 1 | return domain state
VIR_DOMAIN_STATS_CPU_TOTAL | = | 2 | return domain CPU info
VIR_DOMAIN_STATS_BALLOON | = | 4 | return domain balloon info
VIR_DOMAIN_STATS_VCPU | = | 8 | return domain virtual CPU info
VIR_DOMAIN_STATS_INTERFACE | = | 16 | return domain interfaces info
VIR_DOMAIN_STATS_BLOCK | = | 32 | return domain block info

    }

### `virDomainUndefineFlagsValues`

    enum virDomainUndefineFlagsValues {

VIR_DOMAIN_UNDEFINE_MANAGED_SAVE | = | 1 | Also remove any managed save
VIR_DOMAIN_UNDEFINE_SNAPSHOTS_METADATA | = | 2 | If last use of domain, then also remove any snapshot metadata
VIR_DOMAIN_UNDEFINE_NVRAM | = | 4 | Also remove any nvram file Future undefine control flags should come here.

    }

### `virDomainVcpuFlags`

    enum virDomainVcpuFlags {

VIR_DOMAIN_VCPU_CONFIG | = | VIR_DOMAIN_AFFECT_CONFIG | Additionally, these flags may be bitwise-OR'd in.
VIR_DOMAIN_VCPU_CURRENT | = | VIR_DOMAIN_AFFECT_CURRENT
VIR_DOMAIN_VCPU_LIVE | = | VIR_DOMAIN_AFFECT_LIVE
VIR_DOMAIN_VCPU_MAXIMUM | = | 4 | Max rather than current count
VIR_DOMAIN_VCPU_GUEST | = | 8 | Modify state of the cpu in the guest

    }

### `virDomainXMLFlags`

    enum virDomainXMLFlags {

VIR_DOMAIN_XML_SECURE | = | 1 | dump security sensitive information too
VIR_DOMAIN_XML_INACTIVE | = | 2 | dump inactive domain information
VIR_DOMAIN_XML_UPDATE_CPU | = | 4 | update guest CPU requirements according to host CPU
VIR_DOMAIN_XML_MIGRATABLE | = | 8 | dump XML suitable for migration

    }

### `virEventHandleType`

    enum virEventHandleType {

VIR_EVENT_HANDLE_READABLE | = | 1
VIR_EVENT_HANDLE_WRITABLE | = | 2
VIR_EVENT_HANDLE_ERROR | = | 4
VIR_EVENT_HANDLE_HANGUP | = | 8

    }

### `virIPAddrType`

    enum virIPAddrType {

VIR_IP_ADDR_TYPE_IPV4 | = | 0
VIR_IP_ADDR_TYPE_IPV6 | = | 1
VIR_IP_ADDR_TYPE_LAST | = | 2

    }

### `virInterface`

    struct virInterface {

The content of this structure is not made public by the API

    }

### `virInterfaceXMLFlags`

    enum virInterfaceXMLFlags {

VIR_INTERFACE_XML_INACTIVE | = | 1 | dump inactive interface information

    }

### `virKeycodeSet`

    enum virKeycodeSet {

VIR_KEYCODE_SET_LINUX | = | 0
VIR_KEYCODE_SET_XT | = | 1
VIR_KEYCODE_SET_ATSET1 | = | 2
VIR_KEYCODE_SET_ATSET2 | = | 3
VIR_KEYCODE_SET_ATSET3 | = | 4
VIR_KEYCODE_SET_OSX | = | 5
VIR_KEYCODE_SET_XT_KBD | = | 6
VIR_KEYCODE_SET_USB | = | 7
VIR_KEYCODE_SET_WIN32 | = | 8
VIR_KEYCODE_SET_RFB | = | 9
VIR_KEYCODE_SET_LAST | = | 10 | NB: this enum value will increase over time as new events are added to the libvirt API. It reflects the last keycode set supported by this version of the libvirt API.

    }

### `virMemoryParameter`

    struct virMemoryParameter {

char field[VIR_TYPED_PARAM_FIELD_LENGTH] | field | parameter name
int | type | parameter type, virTypedParameterType
union {

int | i | type is INT
unsigned int | ui | type is UINT
long long int | l | type is LLONG
unsigned long long int | ul | type is ULLONG
double | d | type is DOUBLE
char | b | type is BOOLEAN
char * | s | type is STRING, may not be NULL

} | value | parameter value |

    }

### `virMemoryParameterType`

    enum virMemoryParameterType {

VIR_DOMAIN_MEMORY_PARAM_BOOLEAN | = | VIR_TYPED_PARAM_BOOLEAN
VIR_DOMAIN_MEMORY_PARAM_DOUBLE | = | VIR_TYPED_PARAM_DOUBLE
VIR_DOMAIN_MEMORY_PARAM_INT | = | VIR_TYPED_PARAM_INT
VIR_DOMAIN_MEMORY_PARAM_LLONG | = | VIR_TYPED_PARAM_LLONG
VIR_DOMAIN_MEMORY_PARAM_UINT | = | VIR_TYPED_PARAM_UINT
VIR_DOMAIN_MEMORY_PARAM_ULLONG | = | VIR_TYPED_PARAM_ULLONG

    }

### `virNWFilter`

    struct virNWFilter {

The content of this structure is not made public by the API

    }

### `virNetwork`

    struct virNetwork {

The content of this structure is not made public by the API

    }

### `virNetworkDHCPLease`

    struct virNetworkDHCPLease {

char * | iface | Network interface name
long long | expirytime | Seconds since epoch
int | type | virIPAddrType
char * | mac | MAC address
char * | iaid | IAID
char * | ipaddr | IP address
unsigned int | prefix | IP address prefix
char * | hostname | Hostname
char * | clientid | Client ID or DUID

    }

### `virNetworkEventID`

    enum virNetworkEventID {

VIR_NETWORK_EVENT_ID_LIFECYCLE | = | 0 | virConnectNetworkEventLifecycleCallback
VIR_NETWORK_EVENT_ID_LAST | = | 1 | NB: this enum value will increase over time as new events are added to the libvirt API. It reflects the last event ID supported by this version of the libvirt API.

    }

### `virNetworkEventLifecycleType`

    enum virNetworkEventLifecycleType {

VIR_NETWORK_EVENT_DEFINED | = | 0
VIR_NETWORK_EVENT_UNDEFINED | = | 1
VIR_NETWORK_EVENT_STARTED | = | 2
VIR_NETWORK_EVENT_STOPPED | = | 3
VIR_NETWORK_EVENT_LAST | = | 4

    }

### `virNetworkUpdateCommand`

    enum virNetworkUpdateCommand {

VIR_NETWORK_UPDATE_COMMAND_NONE | = | 0 | (invalid)
VIR_NETWORK_UPDATE_COMMAND_MODIFY | = | 1 | modify an existing element
VIR_NETWORK_UPDATE_COMMAND_DELETE | = | 2 | delete an existing element
VIR_NETWORK_UPDATE_COMMAND_ADD_LAST | = | 3 | add an element at end of list
VIR_NETWORK_UPDATE_COMMAND_ADD_FIRST | = | 4 | add an element at start of list
VIR_NETWORK_UPDATE_COMMAND_LAST | = | 5

    }

### `virNetworkUpdateFlags`

    enum virNetworkUpdateFlags {

VIR_NETWORK_UPDATE_AFFECT_CURRENT | = | 0 | affect live if network is active, config if it's not active
VIR_NETWORK_UPDATE_AFFECT_LIVE | = | 1 | affect live state of network only
VIR_NETWORK_UPDATE_AFFECT_CONFIG | = | 2 | affect persistent config only

    }

### `virNetworkUpdateSection`

    enum virNetworkUpdateSection {

VIR_NETWORK_SECTION_NONE | = | 0 | (invalid)
VIR_NETWORK_SECTION_BRIDGE | = | 1 | <bridge>
VIR_NETWORK_SECTION_DOMAIN | = | 2 | <domain>
VIR_NETWORK_SECTION_IP | = | 3 | <ip>
VIR_NETWORK_SECTION_IP_DHCP_HOST | = | 4 | <ip>/<dhcp>/<host>
VIR_NETWORK_SECTION_IP_DHCP_RANGE | = | 5 | <ip>/<dhcp>/<range>
VIR_NETWORK_SECTION_FORWARD | = | 6 | <forward>
VIR_NETWORK_SECTION_FORWARD_INTERFACE | = | 7 | <forward>/<interface>
VIR_NETWORK_SECTION_FORWARD_PF | = | 8 | <forward>/<pf>
VIR_NETWORK_SECTION_PORTGROUP | = | 9 | <portgroup>
VIR_NETWORK_SECTION_DNS_HOST | = | 10 | <dns>/<host>
VIR_NETWORK_SECTION_DNS_TXT | = | 11 | <dns>/<txt>
VIR_NETWORK_SECTION_DNS_SRV | = | 12 | <dns>/<srv>
VIR_NETWORK_SECTION_LAST | = | 13

    }

### `virNetworkXMLFlags`

    enum virNetworkXMLFlags {

VIR_NETWORK_XML_INACTIVE | = | 1 | dump inactive network information

    }

### `virNodeAllocPagesFlags`

    enum virNodeAllocPagesFlags {

VIR_NODE_ALLOC_PAGES_ADD | = | 0 | Add @pageCounts to the pages pool. This can be used only to size up the pool.
VIR_NODE_ALLOC_PAGES_SET | = | 1 | Don't add @pageCounts, instead set passed number of pages. This can be used to free allocated pages.

    }

### `virNodeCPUStats`

    struct virNodeCPUStats {

char field[VIR_NODE_CPU_STATS_FIELD_LENGTH] | field
unsigned long long | value

    }

### `virNodeDevice`

    struct virNodeDevice {

The content of this structure is not made public by the API

    }

### `virNodeGetCPUStatsAllCPUs`

    enum virNodeGetCPUStatsAllCPUs {

VIR_NODE_CPU_STATS_ALL_CPUS | = | -1

    }

### `virNodeGetMemoryStatsAllCells`

    enum virNodeGetMemoryStatsAllCells {

VIR_NODE_MEMORY_STATS_ALL_CELLS | = | -1

    }

### `virNodeInfo`

    struct virNodeInfo {

char model[32] | model | string indicating the CPU model
unsigned long | memory | memory size in kilobytes
unsigned int | cpus | the number of active CPUs
unsigned int | mhz | expected CPU frequency
unsigned int | nodes | the number of NUMA cell, 1 for unusual NUMA topologies or uniform memory access; check capabilities XML for the actual NUMA topology
unsigned int | sockets | number of CPU sockets per node if nodes > 1, 1 in case of unusual NUMA topology
unsigned int | cores | number of cores per socket, total number of processors in case of unusual NUMA topolog
unsigned int | threads | number of threads per core, 1 in case of unusual numa topology

    }

### `virNodeMemoryStats`

    struct virNodeMemoryStats {

char field[VIR_NODE_MEMORY_STATS_FIELD_LENGTH] | field
unsigned long long | value

    }

### `virNodeSuspendTarget`

    enum virNodeSuspendTarget {

VIR_NODE_SUSPEND_TARGET_MEM | = | 0
VIR_NODE_SUSPEND_TARGET_DISK | = | 1
VIR_NODE_SUSPEND_TARGET_HYBRID | = | 2
VIR_NODE_SUSPEND_TARGET_LAST | = | 3 | This constant is subject to change

    }

### `virSchedParameter`

    struct virSchedParameter {

char field[VIR_TYPED_PARAM_FIELD_LENGTH] | field | parameter name
int | type | parameter type, virTypedParameterType
union {

int | i | type is INT
unsigned int | ui | type is UINT
long long int | l | type is LLONG
unsigned long long int | ul | type is ULLONG
double | d | type is DOUBLE
char | b | type is BOOLEAN
char * | s | type is STRING, may not be NULL

} | value | parameter value |

    }

### `virSchedParameterType`

    enum virSchedParameterType {

VIR_DOMAIN_SCHED_FIELD_BOOLEAN | = | VIR_TYPED_PARAM_BOOLEAN
VIR_DOMAIN_SCHED_FIELD_DOUBLE | = | VIR_TYPED_PARAM_DOUBLE
VIR_DOMAIN_SCHED_FIELD_INT | = | VIR_TYPED_PARAM_INT
VIR_DOMAIN_SCHED_FIELD_LLONG | = | VIR_TYPED_PARAM_LLONG
VIR_DOMAIN_SCHED_FIELD_UINT | = | VIR_TYPED_PARAM_UINT
VIR_DOMAIN_SCHED_FIELD_ULLONG | = | VIR_TYPED_PARAM_ULLONG

    }

### `virSecret`

    struct virSecret {

The content of this structure is not made public by the API

    }

### `virSecretUsageType`

    enum virSecretUsageType {

VIR_SECRET_USAGE_TYPE_NONE | = | 0
VIR_SECRET_USAGE_TYPE_VOLUME | = | 1
VIR_SECRET_USAGE_TYPE_CEPH | = | 2
VIR_SECRET_USAGE_TYPE_ISCSI | = | 3
VIR_SECRET_USAGE_TYPE_LAST | = | 4 | NB: this enum value will increase over time as new events are added to the libvirt API. It reflects the last secret owner ID supported by this version of the libvirt API.

    }

### `virSecurityLabel`

    struct virSecurityLabel {

The content of this structure is not made public by the API

    }

### `virSecurityModel`

    struct virSecurityModel {

The content of this structure is not made public by the API

    }

### `virStoragePool`

    struct virStoragePool {

The content of this structure is not made public by the API

    }

### `virStoragePoolBuildFlags`

    enum virStoragePoolBuildFlags {

VIR_STORAGE_POOL_BUILD_NEW | = | 0 | Regular build from scratch
VIR_STORAGE_POOL_BUILD_REPAIR | = | 1 | Repair / reinitialize
VIR_STORAGE_POOL_BUILD_RESIZE | = | 2 | Extend existing pool
VIR_STORAGE_POOL_BUILD_NO_OVERWRITE | = | 4 | Do not overwrite existing pool
VIR_STORAGE_POOL_BUILD_OVERWRITE | = | 8 | Overwrite data

    }

### `virStoragePoolDeleteFlags`

    enum virStoragePoolDeleteFlags {

VIR_STORAGE_POOL_DELETE_NORMAL | = | 0 | Delete metadata only (fast)
VIR_STORAGE_POOL_DELETE_ZEROED | = | 1 | Clear all data to zeros (slow)

    }

### `virStoragePoolInfo`

    struct virStoragePoolInfo {

int | state | virStoragePoolState flags
unsigned long long | capacity | Logical size bytes
unsigned long long | allocation | Current allocation bytes
unsigned long long | available | Remaining free space bytes

    }

### `virStoragePoolState`

    enum virStoragePoolState {

VIR_STORAGE_POOL_INACTIVE | = | 0 | Not running
VIR_STORAGE_POOL_BUILDING | = | 1 | Initializing pool, not available
VIR_STORAGE_POOL_RUNNING | = | 2 | Running normally
VIR_STORAGE_POOL_DEGRADED | = | 3 | Running degraded
VIR_STORAGE_POOL_INACCESSIBLE | = | 4 | Running, but not accessible
VIR_STORAGE_POOL_STATE_LAST | = | 5

    }

### `virStorageVol`

    struct virStorageVol {

The content of this structure is not made public by the API

    }

### `virStorageVolCreateFlags`

    enum virStorageVolCreateFlags {

VIR_STORAGE_VOL_CREATE_PREALLOC_METADATA | = | 1

    }

### `virStorageVolDeleteFlags`

    enum virStorageVolDeleteFlags {

VIR_STORAGE_VOL_DELETE_NORMAL | = | 0 | Delete metadata only (fast)
VIR_STORAGE_VOL_DELETE_ZEROED | = | 1 | Clear all data to zeros (slow)

    }

### `virStorageVolInfo`

    struct virStorageVolInfo {

int | type | virStorageVolType flags
unsigned long long | capacity | Logical size bytes
unsigned long long | allocation | Current allocation bytes

    }

### `virStorageVolResizeFlags`

    enum virStorageVolResizeFlags {

VIR_STORAGE_VOL_RESIZE_ALLOCATE | = | 1 | force allocation of new size
VIR_STORAGE_VOL_RESIZE_DELTA | = | 2 | size is relative to current
VIR_STORAGE_VOL_RESIZE_SHRINK | = | 4 | allow decrease in capacity

    }

### `virStorageVolType`

    enum virStorageVolType {

VIR_STORAGE_VOL_FILE | = | 0 | Regular file based volumes
VIR_STORAGE_VOL_BLOCK | = | 1 | Block based volumes
VIR_STORAGE_VOL_DIR | = | 2 | Directory-passthrough based volume
VIR_STORAGE_VOL_NETWORK | = | 3 | Network volumes like RBD (RADOS Block Device)
VIR_STORAGE_VOL_NETDIR | = | 4 | Network accessible directory that can contain other network volumes
VIR_STORAGE_VOL_LAST | = | 5

    }

### `virStorageVolWipeAlgorithm`

    enum virStorageVolWipeAlgorithm {

VIR_STORAGE_VOL_WIPE_ALG_ZERO | = | 0 | 1-pass, all zeroes
VIR_STORAGE_VOL_WIPE_ALG_NNSA | = | 1 | 4-pass NNSA Policy Letter NAP-14.1-C (XVI-8)
VIR_STORAGE_VOL_WIPE_ALG_DOD | = | 2 | 4-pass DoD 5220.22-M section 8-306 procedure
VIR_STORAGE_VOL_WIPE_ALG_BSI | = | 3 | 9-pass method recommended by the German Center of Security in Information Technologies
VIR_STORAGE_VOL_WIPE_ALG_GUTMANN | = | 4 | The canonical 35-pass sequence
VIR_STORAGE_VOL_WIPE_ALG_SCHNEIER | = | 5 | 7-pass method described by Bruce Schneier in "Applied Cryptography" (1996)
VIR_STORAGE_VOL_WIPE_ALG_PFITZNER7 | = | 6 | 7-pass random
VIR_STORAGE_VOL_WIPE_ALG_PFITZNER33 | = | 7 | 33-pass random
VIR_STORAGE_VOL_WIPE_ALG_RANDOM | = | 8 | 1-pass random
VIR_STORAGE_VOL_WIPE_ALG_LAST | = | 9 | NB: this enum value will increase over time as new algorithms are added to the libvirt API. It reflects the last algorithm supported by this version of the libvirt API.

    }

### `virStorageXMLFlags`

    enum virStorageXMLFlags {

VIR_STORAGE_XML_INACTIVE | = | 1 | dump inactive pool/volume information

    }

### `virStream`

    struct virStream {

The content of this structure is not made public by the API

    }

### `virStreamEventType`

    enum virStreamEventType {

VIR_STREAM_EVENT_READABLE | = | 1
VIR_STREAM_EVENT_WRITABLE | = | 2
VIR_STREAM_EVENT_ERROR | = | 4
VIR_STREAM_EVENT_HANGUP | = | 8

    }

### `virStreamFlags`

    enum virStreamFlags {

VIR_STREAM_NONBLOCK | = | 1

    }

### `virTypedParameter`

    struct virTypedParameter {

char field[VIR_TYPED_PARAM_FIELD_LENGTH] | field | parameter name
int | type | parameter type, virTypedParameterType
union {

int | i | type is INT
unsigned int | ui | type is UINT
long long int | l | type is LLONG
unsigned long long int | ul | type is ULLONG
double | d | type is DOUBLE
char | b | type is BOOLEAN
char * | s | type is STRING, may not be NULL

} | value | parameter value |

    }

### `virTypedParameterFlags`

    enum virTypedParameterFlags {

VIR_TYPED_PARAM_STRING_OKAY | = | 4

    }

### `virTypedParameterType`

    enum virTypedParameterType {

VIR_TYPED_PARAM_INT | = | 1 | integer case
VIR_TYPED_PARAM_UINT | = | 2 | unsigned integer case
VIR_TYPED_PARAM_LLONG | = | 3 | long long case
VIR_TYPED_PARAM_ULLONG | = | 4 | unsigned long long case
VIR_TYPED_PARAM_DOUBLE | = | 5 | double case
VIR_TYPED_PARAM_BOOLEAN | = | 6 | boolean(character) case
VIR_TYPED_PARAM_STRING | = | 7 | string case
VIR_TYPED_PARAM_LAST | = | 8

    }

### `virVcpuInfo`

    struct virVcpuInfo {

unsigned int | number | virtual CPU number
int | state | value from virVcpuState
unsigned long long | cpuTime | CPU time used, in nanoseconds
int | cpu | real CPU number, or -1 if offline

    }

### `virVcpuState`

    enum virVcpuState {

VIR_VCPU_OFFLINE | = | 0 | the virtual CPU is offline
VIR_VCPU_RUNNING | = | 1 | the virtual CPU is running
VIR_VCPU_BLOCKED | = | 2 | the virtual CPU is blocked on resource
VIR_VCPU_LAST | = | 3

    }

### Functions

### `virConnectAuthCallbackPtr`

    typedef int	(*virConnectAuthCallbackPtr)	(virConnectCredentialPtr cred,
    					 unsigned int ncred,
    					 void * cbdata)

When authentication requires one or more interactions, this callback is invoked. For each interaction supplied, data must be gathered from the user and filled in to the 'result' and 'resultlen' fields. If an interaction cannot be filled, fill in NULL and 0.

cred
  list of virConnectCredential object to fetch from user
ncred
  size of cred list
cbdata
  opaque data passed to virConnectOpenAuth
Returns
  0 if all interactions were filled, or -1 upon error

### `virConnectBaselineCPU`

    char *	virConnectBaselineCPU		(virConnectPtr conn,
    					 const char ** xmlCPUs,
    					 unsigned int ncpus,
    					 unsigned int flags)

Computes the most feature-rich CPU which is compatible with all given host CPUs.

If @flags includes VIR_CONNECT_BASELINE_CPU_EXPAND_FEATURES then libvirt will explicitly list all CPU features that are part of the host CPU, without this flag features that are part of the CPU model will not be listed.

conn
  virConnect connection
xmlCPUs
  array of XML descriptions of host CPUs
ncpus
  number of CPUs in xmlCPUs
flags
  bitwise-OR of virConnectBaselineCPUFlags
Returns
  XML description of the computed CPU (caller frees) or NULL on error.

### `virConnectClose`

    int	virConnectClose			(virConnectPtr conn)

This function closes the connection to the Hypervisor. This should not be called if further interaction with the Hypervisor are needed especially if there is running domain which need further monitoring by the application.

Connections are reference counted; the count is explicitly increased by the initial open (virConnectOpen, virConnectOpenAuth, and the like) as well as virConnectRef; it is also temporarily increased by other API that depend on the connection remaining alive. The open and every virConnectRef call should have a matching virConnectClose, and all other references will be released after the corresponding operation completes.

conn
  pointer to the hypervisor connection
Returns
  a positive number if at least 1 reference remains on success. The returned value should not be assumed to be the total reference count. A return of 0 implies no references remain and the connection is closed and memory has been freed. A return of -1 implies a failure. It is possible for the last virConnectClose to return a positive value if some other object still has a temporary reference to the connection, but the application should not try to further use a connection after the virConnectClose that matches the initial open.

### `virConnectCloseFunc`

    typedef void	(*virConnectCloseFunc	)	(virConnectPtr conn,
    					 int reason,
    					 void * opaque)

A callback function to be registered, and called when the connection is closed.

conn
  virConnect connection
reason
  reason why the connection was closed (one of virConnectCloseReason)
opaque
  opaque user data

### `virConnectCompareCPU`

    int	virConnectCompareCPU		(virConnectPtr conn,
    					 const char * xmlDesc,
    					 unsigned int flags)

Compares the given CPU description with the host CPU

conn
  virConnect connection
xmlDesc
  XML describing the CPU to compare with host CPU
flags
  bitwise-OR of virConnectCompareCPUFlags
Returns
  comparison result according to enum virCPUCompareResult. If VIR_CONNECT_COMPARE_CPU_FAIL_INCOMPATIBLE is used and @xmlDesc CPU is incompatible with host CPU, this function will return VIR_CPU_COMPARE_ERROR (instead of VIR_CPU_COMPARE_INCOMPATIBLE) and the error will use the VIR_ERR_CPU_INCOMPATIBLE code with a message providing more details about the incompatibility.

### `virConnectDomainEventBalloonChangeCallback`

    typedef void	(*virConnectDomainEventBalloonChangeCallback)	(virConnectPtr conn,
    							 virDomainPtr dom,
    							 unsigned long long actual,
    							 void * opaque)

The callback signature to use when registering for an event of type VIR_DOMAIN_EVENT_ID_BALLOON_CHANGE with virConnectDomainEventRegisterAny()

conn
  connection object
dom
  domain on which the event occurred
actual
  the new balloon level measured in kibibytes(blocks of 1024 bytes)
opaque
  application specified data

### `virConnectDomainEventBlockJobCallback`

    typedef void	(*virConnectDomainEventBlockJobCallback)	(virConnectPtr conn,
    						 virDomainPtr dom,
    						 const char * disk,
    						 int type,
    						 int status,
    						 void * opaque)

The string returned for @disk can be used in any of the libvirt API that operate on a particular disk of the domain, and depends on what event type was registered with virConnectDomainEventRegisterAny(). If the callback was registered using the older type of VIR_DOMAIN_EVENT_ID_BLOCK_JOB, then @disk contains the absolute file name of the host resource for the active layer of the disk; however, this name is unstable (pivoting via block copy or active block commit will change which file is active, giving a different name for the two events associated with the same job) and cannot be relied on if the active layer is associated with a network resource. If the callback was registered using the newer type of VIR_DOMAIN_EVENT_ID_BLOCK_JOB_2, then @disk will contain the device target shorthand (the <target dev='...'/> sub-element, such as "vda").

conn
  connection object
dom
  domain on which the event occurred
disk
  name associated with the affected disk (filename or target device, depending on how the callback was registered)
type
  type of block job (virDomainBlockJobType)
status
  status of the operation (virConnectDomainEventBlockJobStatus)
opaque
  application specified data

### `virConnectDomainEventCallback`

    typedef int	(*virConnectDomainEventCallback)	(virConnectPtr conn,
    					 virDomainPtr dom,
    					 int event,
    					 int detail,
    					 void * opaque)

A callback function to be registered, and called when a domain event occurs

conn
  virConnect connection
dom
  The domain on which the event occurred
event
  The specific virDomainEventType which occurred
detail
  event specific detail information
opaque
  opaque user data
Returns
  0 (the return value is currently ignored)

### `virConnectDomainEventDeregister`

    int	virConnectDomainEventDeregister	(virConnectPtr conn,
    					 virConnectDomainEventCallback cb)

Removes a callback previously registered with the virConnectDomainEventRegister() function.

Use of this method is no longer recommended. Instead applications should try virConnectDomainEventDeregisterAny() which has a more flexible API contract

conn
  pointer to the connection
cb
  callback to the function handling domain events
Returns
  0 on success, -1 on failure. Older versions of some hypervisors sometimes returned a positive number on success, but without any reliable semantics on what that number represents.

### `virConnectDomainEventDeregisterAny`

    int	virConnectDomainEventDeregisterAny	(virConnectPtr conn,
    						 int callbackID)

Removes an event callback. The callbackID parameter should be the value obtained from a previous virConnectDomainEventRegisterAny() method.

conn
  pointer to the connection
callbackID
  the callback identifier
Returns
  0 on success, -1 on failure. Older versions of some hypervisors sometimes returned a positive number on success, but without any reliable semantics on what that number represents.

### `virConnectDomainEventDeviceRemovedCallback`

    typedef void	(*virConnectDomainEventDeviceRemovedCallback)	(virConnectPtr conn,
    							 virDomainPtr dom,
    							 const char * devAlias,
    							 void * opaque)

This callback occurs when a device is removed from the domain.

The callback signature to use when registering for an event of type VIR_DOMAIN_EVENT_ID_DEVICE_REMOVED with virConnectDomainEventRegisterAny()

conn
  connection object
dom
  domain on which the event occurred
devAlias
  device alias
opaque
  application specified data

### `virConnectDomainEventDiskChangeCallback`

    typedef void	(*virConnectDomainEventDiskChangeCallback)	(virConnectPtr conn,
    						 virDomainPtr dom,
    						 const char * oldSrcPath,
    						 const char * newSrcPath,
    						 const char * devAlias,
    						 int reason,
    						 void * opaque)

This callback occurs when disk gets changed. However, not all @reason will cause both @oldSrcPath and @newSrcPath to be non-NULL. Please see virConnectDomainEventDiskChangeReason for more details.

The callback signature to use when registering for an event of type VIR_DOMAIN_EVENT_ID_DISK_CHANGE with virConnectDomainEventRegisterAny()

conn
  connection object
dom
  domain on which the event occurred
oldSrcPath
  old source path
newSrcPath
  new source path
devAlias
  device alias name
reason
  reason why this callback was called; any of virConnectDomainEventDiskChangeReason
opaque
  application specified data

### `virConnectDomainEventGenericCallback`

    typedef void	(*virConnectDomainEventGenericCallback)	(virConnectPtr conn,
    						 virDomainPtr dom,
    						 void * opaque)

A generic domain event callback handler, for use with virConnectDomainEventRegisterAny(). Specific events usually have a customization with extra parameters, often with @opaque being passed in a different parameter position; use VIR_DOMAIN_EVENT_CALLBACK() when registering an appropriate handler.

conn
  the connection pointer
dom
  the domain pointer
opaque
  application specified data

### `virConnectDomainEventGraphicsCallback`

    typedef void	(*virConnectDomainEventGraphicsCallback)	(virConnectPtr conn,
    						 virDomainPtr dom,
    						 int phase,
    						 const virDomainEventGraphicsAddress * local,
    						 const virDomainEventGraphicsAddress * remote,
    						 const char * authScheme,
    						 const virDomainEventGraphicsSubject * subject,
    						 void * opaque)

The callback signature to use when registering for an event of type VIR_DOMAIN_EVENT_ID_GRAPHICS with virConnectDomainEventRegisterAny()

conn
  connection object
dom
  domain on which the event occurred
phase
  the phase of the connection
local
  the local server address
remote
  the remote client address
authScheme
  the authentication scheme activated
subject
  the authenticated subject (user)
opaque
  application specified data

### `virConnectDomainEventIOErrorCallback`

    typedef void	(*virConnectDomainEventIOErrorCallback)	(virConnectPtr conn,
    						 virDomainPtr dom,
    						 const char * srcPath,
    						 const char * devAlias,
    						 int action,
    						 void * opaque)

The callback signature to use when registering for an event of type VIR_DOMAIN_EVENT_ID_IO_ERROR with virConnectDomainEventRegisterAny()

conn
  connection object
dom
  domain on which the event occurred
srcPath
  The host file on which the IO error occurred
devAlias
  The guest device alias associated with the path
action
  action that is to be taken due to the IO error
opaque
  application specified data

### `virConnectDomainEventIOErrorReasonCallback`

    typedef void	(*virConnectDomainEventIOErrorReasonCallback)	(virConnectPtr conn,
    							 virDomainPtr dom,
    							 const char * srcPath,
    							 const char * devAlias,
    							 int action,
    							 const char * reason,
    							 void * opaque)

The callback signature to use when registering for an event of type VIR_DOMAIN_EVENT_ID_IO_ERROR_REASON with virConnectDomainEventRegisterAny()

conn
  connection object
dom
  domain on which the event occurred
srcPath
  The host file on which the IO error occurred
devAlias
  The guest device alias associated with the path
action
  action that is to be taken due to the IO error
reason
  the cause of the IO error
opaque
  application specified data

### `virConnectDomainEventPMSuspendCallback`

    typedef void	(*virConnectDomainEventPMSuspendCallback)	(virConnectPtr conn,
    						 virDomainPtr dom,
    						 int reason,
    						 void * opaque)

This callback occurs when the guest is suspended.

The callback signature to use when registering for an event of type VIR_DOMAIN_EVENT_ID_PMSUSPEND with virConnectDomainEventRegisterAny()

conn
  connection object
dom
  domain on which the event occurred
reason
  reason why the callback was called, unused currently, always passes 0
opaque
  application specified data

### `virConnectDomainEventPMSuspendDiskCallback`

    typedef void	(*virConnectDomainEventPMSuspendDiskCallback)	(virConnectPtr conn,
    							 virDomainPtr dom,
    							 int reason,
    							 void * opaque)

This callback occurs when the guest is suspended to disk.

The callback signature to use when registering for an event of type VIR_DOMAIN_EVENT_ID_PMSUSPEND_DISK with virConnectDomainEventRegisterAny()

conn
  connection object
dom
  domain on which the event occurred
reason
  reason why the callback was called, unused currently, always passes 0
opaque
  application specified data

### `virConnectDomainEventPMWakeupCallback`

    typedef void	(*virConnectDomainEventPMWakeupCallback)	(virConnectPtr conn,
    						 virDomainPtr dom,
    						 int reason,
    						 void * opaque)

This callback occurs when the guest is woken up.

The callback signature to use when registering for an event of type VIR_DOMAIN_EVENT_ID_PMWAKEUP with virConnectDomainEventRegisterAny()

conn
  connection object
dom
  domain on which the event occurred
reason
  reason why the callback was called, unused currently, always passes 0
opaque
  application specified data

### `virConnectDomainEventRTCChangeCallback`

    typedef void	(*virConnectDomainEventRTCChangeCallback)	(virConnectPtr conn,
    						 virDomainPtr dom,
    						 long long utcoffset,
    						 void * opaque)

The callback signature to use when registering for an event of type VIR_DOMAIN_EVENT_ID_RTC_CHANGE with virConnectDomainEventRegisterAny()

conn
  connection object
dom
  domain on which the event occurred
utcoffset
  the new RTC offset from UTC, measured in seconds
opaque
  application specified data

### `virConnectDomainEventRegister`

    int	virConnectDomainEventRegister	(virConnectPtr conn,
    					 virConnectDomainEventCallback cb,
    					 void * opaque,
    					 virFreeCallback freecb)

Adds a callback to receive notifications of domain lifecycle events occurring on a connection. This function requires that an event loop has been previously registered with virEventRegisterImpl() or virEventRegisterDefaultImpl().

Use of this method is no longer recommended. Instead applications should try virConnectDomainEventRegisterAny() which has a more flexible API contract.

The virDomainPtr object handle passed into the callback upon delivery of an event is only valid for the duration of execution of the callback. If the callback wishes to keep the domain object after the callback returns, it shall take a reference to it, by calling virDomainRef. The reference can be released once the object is no longer required by calling virDomainFree.

conn
  pointer to the connection
cb
  callback to the function handling domain events
opaque
  opaque data to pass on to the callback
freecb
  optional function to deallocate opaque when not used anymore
Returns
  0 on success, -1 on failure. Older versions of some hypervisors sometimes returned a positive number on success, but without any reliable semantics on what that number represents.

### `virConnectDomainEventRegisterAny`

    int	virConnectDomainEventRegisterAny	(virConnectPtr conn,
    						 virDomainPtr dom,
    						 int eventID,
    						 virConnectDomainEventGenericCallback cb,
    						 void * opaque,
    						 virFreeCallback freecb)

Adds a callback to receive notifications of arbitrary domain events occurring on a domain. This function requires that an event loop has been previously registered with virEventRegisterImpl() or virEventRegisterDefaultImpl().

If @dom is NULL, then events will be monitored for any domain. If @dom is non-NULL, then only the specific domain will be monitored.

Most types of event have a callback providing a custom set of parameters for the event. When registering an event, it is thus necessary to use the VIR_DOMAIN_EVENT_CALLBACK() macro to cast the supplied function pointer to match the signature of this method.

The virDomainPtr object handle passed into the callback upon delivery of an event is only valid for the duration of execution of the callback. If the callback wishes to keep the domain object after the callback returns, it shall take a reference to it, by calling virDomainRef(). The reference can be released once the object is no longer required by calling virDomainFree().

The return value from this method is a positive integer identifier for the callback. To unregister a callback, this callback ID should be passed to the virConnectDomainEventDeregisterAny() method.

conn
  pointer to the connection
dom
  pointer to the domain
eventID
  the event type to receive
cb
  callback to the function handling domain events
opaque
  opaque data to pass on to the callback
freecb
  optional function to deallocate opaque when not used anymore
Returns
  a callback identifier on success, -1 on failure.

### `virConnectDomainEventTrayChangeCallback`

    typedef void	(*virConnectDomainEventTrayChangeCallback)	(virConnectPtr conn,
    						 virDomainPtr dom,
    						 const char * devAlias,
    						 int reason,
    						 void * opaque)

This callback occurs when the tray of a removable device is moved.

The callback signature to use when registering for an event of type VIR_DOMAIN_EVENT_ID_TRAY_CHANGE with virConnectDomainEventRegisterAny()

conn
  connection object
dom
  domain on which the event occurred
devAlias
  device alias
reason
  why the tray status was changed?
opaque
  application specified data

### `virConnectDomainEventTunableCallback`

    typedef void	(*virConnectDomainEventTunableCallback)	(virConnectPtr conn,
    						 virDomainPtr dom,
    						 virTypedParameterPtr params,
    						 int nparams,
    						 void * opaque)

This callback occurs when tunable values are updated. The params must not be freed in the callback handler as it's done internally after the callback handler is executed.

Currently supported name spaces: "cputune.*" "blkdeviotune.*"

The callback signature to use when registering for an event of type VIR_DOMAIN_EVENT_ID_TUNABLE with virConnectDomainEventRegisterAny()

conn
  connection object
dom
  domain on which the event occurred
params
  changed tunable values stored as array of virTypedParameter
nparams
  size of the array
opaque
  application specified data

### `virConnectDomainEventWatchdogCallback`

    typedef void	(*virConnectDomainEventWatchdogCallback)	(virConnectPtr conn,
    						 virDomainPtr dom,
    						 int action,
    						 void * opaque)

The callback signature to use when registering for an event of type VIR_DOMAIN_EVENT_ID_WATCHDOG with virConnectDomainEventRegisterAny()

conn
  connection object
dom
  domain on which the event occurred
action
  action that is to be taken due to watchdog firing
opaque
  application specified data

### `virConnectDomainXMLFromNative`

    char *	virConnectDomainXMLFromNative	(virConnectPtr conn,
    					 const char * nativeFormat,
    					 const char * nativeConfig,
    					 unsigned int flags)

Reads native configuration data describing a domain, and generates libvirt domain XML. The format of the native data is hypervisor dependant.

conn
  a connection object
nativeFormat
  configuration format importing from
nativeConfig
  the configuration data to import
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  a 0 terminated UTF-8 encoded XML instance, or NULL in case of error. the caller must free() the returned value.

### `virConnectDomainXMLToNative`

    char *	virConnectDomainXMLToNative	(virConnectPtr conn,
    					 const char * nativeFormat,
    					 const char * domainXml,
    					 unsigned int flags)

Reads a domain XML configuration document, and generates a native configuration file describing the domain. The format of the native data is hypervisor dependant.

conn
  a connection object
nativeFormat
  configuration format exporting to
domainXml
  the domain configuration to export
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  a 0 terminated UTF-8 encoded native config datafile, or NULL in case of error. the caller must free() the returned value.

### `virConnectFindStoragePoolSources`

    char *	virConnectFindStoragePoolSources	(virConnectPtr conn,
    						 const char * type,
    						 const char * srcSpec,
    						 unsigned int flags)

Talks to a storage backend and attempts to auto-discover the set of available storage pool sources. e.g. For iSCSI this would be a set of iSCSI targets. For NFS this would be a list of exported paths. The srcSpec (optional for some storage pool types, e.g. local ones) is an instance of the storage pool's source element specifying where to look for the pools.

srcSpec is not required for some types (e.g., those querying local storage resources only)

conn
  pointer to hypervisor connection
type
  type of storage pool sources to discover
srcSpec
  XML document specifying discovery source
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  an xml document consisting of a SourceList element containing a source document appropriate to the given pool type for each discovered source.

### `virConnectGetAllDomainStats`

    int	virConnectGetAllDomainStats	(virConnectPtr conn,
    					 unsigned int stats,
    					 virDomainStatsRecordPtr ** retStats,
    					 unsigned int flags)

Query statistics for all domains on a given connection.

Report statistics of various parameters for a running VM according to @stats field. The statistics are returned as an array of structures for each queried domain. The structure contains an array of typed parameters containing the individual statistics. The typed parameter name for each statistic field consists of a dot-separated string containing name of the requested group followed by a group specific description of the statistic value.

The statistic groups are enabled using the @stats parameter which is a binary-OR of enum virDomainStatsTypes. The following groups are available (although not necessarily implemented for each hypervisor):

VIR_DOMAIN_STATS_STATE: Return domain state and reason for entering that state. The typed parameter keys are in this format: "state.state" - state of the VM, returned as int from virDomainState enum "state.reason" - reason for entering given state, returned as int from virDomain*Reason enum corresponding to given state.

VIR_DOMAIN_STATS_CPU_TOTAL: Return CPU statistics and usage information. The typed parameter keys are in this format: "cpu.time" - total cpu time spent for this domain in nanoseconds as unsigned long long. "cpu.user" - user cpu time spent in nanoseconds as unsigned long long. "cpu.system" - system cpu time spent in nanoseconds as unsigned long long.

VIR_DOMAIN_STATS_BALLOON: Return memory balloon device information. The typed parameter keys are in this format: "balloon.current" - the memory in kiB currently used as unsigned long long. "balloon.maximum" - the maximum memory in kiB allowed as unsigned long long.

VIR_DOMAIN_STATS_VCPU: Return virtual CPU statistics. Due to VCPU hotplug, the vcpu.<num>.* array could be sparse. The actual size of the array corresponds to "vcpu.current". The array size will never exceed "vcpu.maximum". The typed parameter keys are in this format: "vcpu.current" - current number of online virtual CPUs as unsigned int. "vcpu.maximum" - maximum number of online virtual CPUs as unsigned int. "vcpu.<num>.state" - state of the virtual CPU <num>, as int from virVcpuState enum. "vcpu.<num>.time" - virtual cpu time spent by virtual CPU <num> as unsigned long long.

VIR_DOMAIN_STATS_INTERFACE: Return network interface statistics. The typed parameter keys are in this format: "net.count" - number of network interfaces on this domain as unsigned int. "net.<num>.name" - name of the interface <num> as string. "net.<num>.rx.bytes" - bytes received as unsigned long long. "net.<num>.rx.pkts" - packets received as unsigned long long. "net.<num>.rx.errs" - receive errors as unsigned long long. "net.<num>.rx.drop" - receive packets dropped as unsigned long long. "net.<num>.tx.bytes" - bytes transmitted as unsigned long long. "net.<num>.tx.pkts" - packets transmitted as unsigned long long. "net.<num>.tx.errs" - transmission errors as unsigned long long. "net.<num>.tx.drop" - transmit packets dropped as unsigned long long.

VIR_DOMAIN_STATS_BLOCK: Return block devices statistics. The typed parameter keys are in this format: "block.count" - number of block devices on this domain as unsigned int. "block.<num>.name" - name of the block device <num> as string. matches the target name (vda/sda/hda) of the block device. "block.<num>.rd.reqs" - number of read requests as unsigned long long. "block.<num>.rd.bytes" - number of read bytes as unsigned long long. "block.<num>.rd.times" - total time (ns) spent on reads as unsigned long long. "block.<num>.wr.reqs" - number of write requests as unsigned long long. "block.<num>.wr.bytes" - number of written bytes as unsigned long long. "block.<num>.wr.times" - total time (ns) spent on writes as unsigned long long. "block.<num>.fl.reqs" - total flush requests as unsigned long long. "block.<num>.fl.times" - total time (ns) spent on cache flushing as unsigned long long. "block.<num>.errors" - Xen only: the 'oo_req' value as unsigned long long.

Note that entire stats groups or individual stat fields may be missing from the output in case they are not supported by the given hypervisor, are not applicable for the current state of the guest domain, or their retrieval was not successful.

Using 0 for @stats returns all stats groups supported by the given hypervisor.

Specifying VIR_CONNECT_GET_ALL_DOMAINS_STATS_ENFORCE_STATS as @flags makes the function return error in case some of the stat types in @stats were not recognized by the daemon.

Similarly to virConnectListAllDomains, @flags can contain various flags to filter the list of domains to provide stats for.

VIR_CONNECT_GET_ALL_DOMAINS_STATS_ACTIVE selects online domains while VIR_CONNECT_GET_ALL_DOMAINS_STATS_INACTIVE selects offline ones.

VIR_CONNECT_GET_ALL_DOMAINS_STATS_PERSISTENT and VIR_CONNECT_GET_ALL_DOMAINS_STATS_TRANSIENT allow to filter the list according to their persistence.

To filter the list of VMs by domain state @flags can contain VIR_CONNECT_GET_ALL_DOMAINS_STATS_RUNNING, VIR_CONNECT_GET_ALL_DOMAINS_STATS_PAUSED, VIR_CONNECT_GET_ALL_DOMAINS_STATS_SHUTOFF and/or VIR_CONNECT_GET_ALL_DOMAINS_STATS_OTHER for all other states.

conn
  pointer to the hypervisor connection
stats
  stats to return, binary-OR of virDomainStatsTypes
retStats
  Pointer that will be filled with the array of returned stats
flags
  extra flags; binary-OR of virConnectGetAllDomainStatsFlags
Returns
  the count of returned statistics structures on success, -1 on error. The requested data are returned in the @retStats parameter. The returned array should be freed by the caller. See virDomainStatsRecordListFree.

### `virConnectGetCPUModelNames`

    int	virConnectGetCPUModelNames	(virConnectPtr conn,
    					 const char * arch,
    					 char ** * models,
    					 unsigned int flags)

Get the list of supported CPU models for a specific architecture.

conn
  virConnect connection
arch
  Architecture
models
  Pointer to a variable to store the NULL-terminated array of the CPU models supported for the specified architecture. Each element and the array itself must be freed by the caller with free. Pass NULL if only the list length is needed.
flags
  extra flags; not used yet, so callers should always pass 0.
Returns
  -1 on error, number of elements in @models on success.

### `virConnectGetCapabilities`

    char *	virConnectGetCapabilities	(virConnectPtr conn)

Provides capabilities of the hypervisor / driver.

conn
  pointer to the hypervisor connection
Returns
  NULL in case of error, or an XML string defining the capabilities. The client must free the returned string after use.

### `virConnectGetDomainCapabilities`

    char *	virConnectGetDomainCapabilities	(virConnectPtr conn,
    					 const char * emulatorbin,
    					 const char * arch,
    					 const char * machine,
    					 const char * virttype,
    					 unsigned int flags)

Prior creating a domain (for instance via virDomainCreateXML or virDomainDefineXML) it may be suitable to know what the underlying emulator and/or libvirt is capable of. For instance, if host, libvirt and qemu is capable of VFIO passthrough and so on.

conn
  pointer to the hypervisor connection
emulatorbin
  path to emulator
arch
  domain architecture
machine
  machine type
virttype
  virtualization type
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  NULL in case of error or an XML string defining the capabilities.

### `virConnectGetHostname`

    char *	virConnectGetHostname		(virConnectPtr conn)

This returns a system hostname on which the hypervisor is running (based on the result of the gethostname system call, but possibly expanded to a fully-qualified domain name via getaddrinfo). If we are connected to a remote system, then this returns the hostname of the remote system.

conn
  pointer to a hypervisor connection
Returns
  the hostname which must be freed by the caller, or NULL if there was an error.

### `virConnectGetLibVersion`

    int	virConnectGetLibVersion		(virConnectPtr conn,
    					 unsigned long * libVer)

Provides @libVer, which is the version of libvirt used by the daemon running on the @conn host

conn
  pointer to the hypervisor connection
libVer
  returns the libvirt library version used on the connection (OUT)
Returns
  -1 in case of failure, 0 otherwise, and values for @libVer have the format major * 1,000,000 + minor * 1,000 + release.

### `virConnectGetMaxVcpus`

    int	virConnectGetMaxVcpus		(virConnectPtr conn,
    					 const char * type)

Provides the maximum number of virtual CPUs supported for a guest VM of a specific type. The 'type' parameter here corresponds to the 'type' attribute in the <domain> element of the XML.

conn
  pointer to the hypervisor connection
type
  value of the 'type' attribute in the <domain> element
Returns
  the maximum of virtual CPU or -1 in case of error.

### `virConnectGetSysinfo`

    char *	virConnectGetSysinfo		(virConnectPtr conn,
    					 unsigned int flags)

This returns the XML description of the sysinfo details for the host on which the hypervisor is running, in the same format as the <sysinfo> element of a domain XML. This information is generally available only for hypervisors running with root privileges.

conn
  pointer to a hypervisor connection
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  the XML string which must be freed by the caller, or NULL if there was an error.

### `virConnectGetType`

    const char *	virConnectGetType	(virConnectPtr conn)

Get the name of the Hypervisor driver used. This is merely the driver name; for example, both KVM and QEMU guests are serviced by the driver for the qemu:// URI, so a return of "QEMU" does not indicate whether KVM acceleration is present. For more details about the hypervisor, use virConnectGetCapabilities().

conn
  pointer to the hypervisor connection
Returns
  NULL in case of error, a static zero terminated string otherwise. See also: http://www.redhat.com/archives/libvir-list/2007-February/msg00096.html

### `virConnectGetURI`

    char *	virConnectGetURI		(virConnectPtr conn)

This returns the URI (name) of the hypervisor connection. Normally this is the same as or similar to the string passed to the virConnectOpen/virConnectOpenReadOnly call, but the driver may make the URI canonical. If name == NULL was passed to virConnectOpen, then the driver will return a non-NULL URI which can be used to connect to the same hypervisor later.

conn
  pointer to a hypervisor connection
Returns
  the URI string which must be freed by the caller, or NULL if there was an error.

### `virConnectGetVersion`

    int	virConnectGetVersion		(virConnectPtr conn,
    					 unsigned long * hvVer)

Get the version level of the Hypervisor running. This may work only with hypervisor call, i.e. with privileged access to the hypervisor, not with a Read-Only connection.

conn
  pointer to the hypervisor connection
hvVer
  return value for the version of the running hypervisor (OUT)
Returns
  -1 in case of error, 0 otherwise. if the version can't be extracted by lack of capacities returns 0 and @hvVer is 0, otherwise @hvVer value is major * 1,000,000 + minor * 1,000 + release

### `virConnectIsAlive`

    int	virConnectIsAlive		(virConnectPtr conn)

Determine if the connection to the hypervisor is still alive

A connection will be classed as alive if it is either local, or running over a channel (TCP or UNIX socket) which is not closed.

conn
  pointer to the connection object
Returns
  1 if alive, 0 if dead, -1 on error

### `virConnectIsEncrypted`

    int	virConnectIsEncrypted		(virConnectPtr conn)

Determine if the connection to the hypervisor is encrypted

conn
  pointer to the connection object
Returns
  1 if encrypted, 0 if not encrypted, -1 on error

### `virConnectIsSecure`

    int	virConnectIsSecure		(virConnectPtr conn)

Determine if the connection to the hypervisor is secure

A connection will be classed as secure if it is either encrypted, or running over a channel which is not exposed to eavesdropping (eg a UNIX domain socket, or pipe)

conn
  pointer to the connection object
Returns
  1 if secure, 0 if not secure, -1 on error

### `virConnectListAllDomains`

    int	virConnectListAllDomains	(virConnectPtr conn,
    					 virDomainPtr ** domains,
    					 unsigned int flags)

Collect a possibly-filtered list of all domains, and return an allocated array of information for each. This API solves the race inherent in virConnectListDomains() and virConnectListDefinedDomains().

Normally, all domains are returned; however, @flags can be used to filter the results for a smaller list of targeted domains. The valid flags are divided into groups, where each group contains bits that describe mutually exclusive attributes of a domain, and where all bits within a group describe all possible domains. Some hypervisors might reject explicit bits from a group where the hypervisor cannot make a distinction (for example, not all hypervisors can tell whether domains have snapshots). For a group supported by a given hypervisor, the behavior when no bits of a group are set is identical to the behavior when all bits in that group are set. When setting bits from more than one group, it is possible to select an impossible combination (such as an inactive transient domain), in that case a hypervisor may return either 0 or an error.

The first group of @flags is VIR_CONNECT_LIST_DOMAINS_ACTIVE (online domains) and VIR_CONNECT_LIST_DOMAINS_INACTIVE (offline domains).

The next group of @flags is VIR_CONNECT_LIST_DOMAINS_PERSISTENT (defined domains) and VIR_CONNECT_LIST_DOMAINS_TRANSIENT (running but not defined).

The next group of @flags covers various domain states: VIR_CONNECT_LIST_DOMAINS_RUNNING, VIR_CONNECT_LIST_DOMAINS_PAUSED, VIR_CONNECT_LIST_DOMAINS_SHUTOFF, and a catch-all for all other states (such as crashed, this catch-all covers the possibility of adding new states).

The remaining groups cover boolean attributes commonly asked about domains; they include VIR_CONNECT_LIST_DOMAINS_MANAGEDSAVE and VIR_CONNECT_LIST_DOMAINS_NO_MANAGEDSAVE, for filtering based on whether a managed save image exists; VIR_CONNECT_LIST_DOMAINS_AUTOSTART and VIR_CONNECT_LIST_DOMAINS_NO_AUTOSTART, for filtering based on autostart; VIR_CONNECT_LIST_DOMAINS_HAS_SNAPSHOT and VIR_CONNECT_LIST_DOMAINS_NO_SNAPSHOT, for filtering based on whether a domain has snapshots.

Example of usage:

    virDomainPtr *domains;
    size_t i;
    int ret;
    unsigned int flags = VIR_CONNECT_LIST_DOMAINS_RUNNING |
                         VIR_CONNECT_LIST_DOMAINS_PERSISTENT;
    ret = virConnectListAllDomains(conn, &domains, flags);
    if (ret < 0)
        error();
    for (i = 0; i < ret; i++) {
         do_something_with_domain(domains[i]);
         //here or in a separate loop if needed
         virDomainFree(domains[i]);
    }
    free(domains);

conn
  Pointer to the hypervisor connection.
domains
  Pointer to a variable to store the array containing domain objects or NULL if the list is not required (just returns number of guests).
flags
  bitwise-OR of virConnectListAllDomainsFlags
Returns
  the number of domains found or -1 and sets domains to NULL in case of error. On success, the array stored into @domains is guaranteed to have an extra allocated element set to NULL but not included in the return count, to make iteration easier. The caller is responsible for calling virDomainFree() on each array element, then calling free() on @domains.

### `virConnectListAllInterfaces`

    int	virConnectListAllInterfaces	(virConnectPtr conn,
    					 virInterfacePtr ** ifaces,
    					 unsigned int flags)

Collect the list of interfaces, and allocate an array to store those objects. This API solves the race inherent between virConnectListInterfaces and virConnectListDefinedInterfaces.

Normally, all interfaces are returned; however, @flags can be used to filter the results for a smaller list of targeted interfaces. The valid flags are divided into groups, where each group contains bits that describe mutually exclusive attributes of a interface, and where all bits within a group describe all possible interfaces.

The only group of @flags is VIR_CONNECT_LIST_INTERFACES_ACTIVE (up) and VIR_CONNECT_LIST_INTERFACES_INACTIVE (down) to filter the interfaces by state.

conn
  Pointer to the hypervisor connection.
ifaces
  Pointer to a variable to store the array containing the interface objects or NULL if the list is not required (just returns number of interfaces).
flags
  bitwise-OR of virConnectListAllInterfacesFlags.
Returns
  the number of interfaces found or -1 and sets @ifaces to NULL in case of error. On success, the array stored into @ifaces is guaranteed to have an extra allocated element set to NULL but not included in the return count, to make iteration easier. The caller is responsible for calling virStorageInterfaceFree() on each array element, then calling free() on @ifaces.

### `virConnectListAllNWFilters`

    int	virConnectListAllNWFilters	(virConnectPtr conn,
    					 virNWFilterPtr ** filters,
    					 unsigned int flags)

Collect the list of network filters, and allocate an array to store those objects.

conn
  Pointer to the hypervisor connection.
filters
  Pointer to a variable to store the array containing the network filter objects or NULL if the list is not required (just returns number of network filters).
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  the number of network filters found or -1 and sets @filters to NULL in case of error. On success, the array stored into @filters is guaranteed to have an extra allocated element set to NULL but not included in the return count, to make iteration easier. The caller is responsible for calling virNWFilterFree() on each array element, then calling free() on @filters.

### `virConnectListAllNetworks`

    int	virConnectListAllNetworks	(virConnectPtr conn,
    					 virNetworkPtr ** nets,
    					 unsigned int flags)

Collect the list of networks, and allocate an array to store those objects. This API solves the race inherent between virConnectListNetworks and virConnectListDefinedNetworks.

Normally, all networks are returned; however, @flags can be used to filter the results for a smaller list of targeted networks. The valid flags are divided into groups, where each group contains bits that describe mutually exclusive attributes of a network, and where all bits within a group describe all possible networks.

The first group of @flags is VIR_CONNECT_LIST_NETWORKS_ACTIVE (up) and VIR_CONNECT_LIST_NETWORKS_INACTIVE (down) to filter the networks by state.

The second group of @flags is VIR_CONNECT_LIST_NETWORKS_PERSISTENT (defined) and VIR_CONNECT_LIST_NETWORKS_TRANSIENT (running but not defined), to filter the networks by whether they have persistent config or not.

The third group of @flags is VIR_CONNECT_LIST_NETWORKS_AUTOSTART and VIR_CONNECT_LIST_NETWORKS_NO_AUTOSTART, to filter the networks by whether they are marked as autostart or not.

conn
  Pointer to the hypervisor connection.
nets
  Pointer to a variable to store the array containing the network objects or NULL if the list is not required (just returns number of networks).
flags
  bitwise-OR of virConnectListAllNetworksFlags.
Returns
  the number of networks found or -1 and sets @nets to NULL in case of error. On success, the array stored into @nets is guaranteed to have an extra allocated element set to NULL but not included in the return count, to make iteration easier. The caller is responsible for calling virNetworkFree() on each array element, then calling free() on @nets.

### `virConnectListAllNodeDevices`

    int	virConnectListAllNodeDevices	(virConnectPtr conn,
    					 virNodeDevicePtr ** devices,
    					 unsigned int flags)

Collect the list of node devices, and allocate an array to store those objects.

Normally, all node devices are returned; however, @flags can be used to filter the results for a smaller list of targeted node devices. The valid flags are divided into groups, where each group contains bits that describe mutually exclusive attributes of a node device, and where all bits within a group describe all possible node devices.

Only one group of the @flags is provided to filter the node devices by capability type, flags include: VIR_CONNECT_LIST_NODE_DEVICES_CAP_SYSTEM VIR_CONNECT_LIST_NODE_DEVICES_CAP_PCI_DEV VIR_CONNECT_LIST_NODE_DEVICES_CAP_USB_DEV VIR_CONNECT_LIST_NODE_DEVICES_CAP_USB_INTERFACE VIR_CONNECT_LIST_NODE_DEVICES_CAP_NET VIR_CONNECT_LIST_NODE_DEVICES_CAP_SCSI_HOST VIR_CONNECT_LIST_NODE_DEVICES_CAP_SCSI_TARGET VIR_CONNECT_LIST_NODE_DEVICES_CAP_SCSI VIR_CONNECT_LIST_NODE_DEVICES_CAP_STORAGE VIR_CONNECT_LIST_NODE_DEVICES_CAP_FC_HOST VIR_CONNECT_LIST_NODE_DEVICES_CAP_VPORTS VIR_CONNECT_LIST_NODE_DEVICES_CAP_SCSI_GENERIC

conn
  Pointer to the hypervisor connection.
devices
  Pointer to a variable to store the array containing the node device objects or NULL if the list is not required (just returns number of node devices).
flags
  bitwise-OR of virConnectListAllNodeDevices.
Returns
  the number of node devices found or -1 and sets @devices to NULL in case of error. On success, the array stored into @devices is guaranteed to have an extra allocated element set to NULL but not included in the return count, to make iteration easier. The caller is responsible for calling virNodeDeviceFree() on each array element, then calling free() on @devices.

### `virConnectListAllSecrets`

    int	virConnectListAllSecrets	(virConnectPtr conn,
    					 virSecretPtr ** secrets,
    					 unsigned int flags)

Collect the list of secrets, and allocate an array to store those objects.

Normally, all secrets are returned; however, @flags can be used to filter the results for a smaller list of targeted secrets. The valid flags are divided into groups, where each group contains bits that describe mutually exclusive attributes of a secret, and where all bits within a group describe all possible secrets.

The first group of @flags is used to filter secrets by its storage location. Flag VIR_CONNECT_LIST_SECRETS_EPHEMERAL selects secrets that are kept only in memory. Flag VIR_CONNECT_LIST_SECRETS_NO_EPHEMERAL selects secrets that are kept in persistent storage.

The second group of @flags is used to filter secrets by privacy. Flag VIR_CONNECT_LIST_SECRETS_PRIVATE seclets secrets that are never revealed to any caller of libvirt nor to any other node. Flag VIR_CONNECT_LIST_SECRETS_NO_PRIVATE selects non-private secrets.

conn
  Pointer to the hypervisor connection.
secrets
  Pointer to a variable to store the array containing the secret objects or NULL if the list is not required (just returns the number of secrets).
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  the number of secrets found or -1 and sets @secrets to NULL in case of error. On success, the array stored into @secrets is guaranteed to have an extra allocated element set to NULL but not included in the return count, to make iteration easier. The caller is responsible for calling virSecretFree() on each array element, then calling free() on @secrets.

### `virConnectListAllStoragePools`

    int	virConnectListAllStoragePools	(virConnectPtr conn,
    					 virStoragePoolPtr ** pools,
    					 unsigned int flags)

Collect the list of storage pools, and allocate an array to store those objects. This API solves the race inherent between virConnectListStoragePools and virConnectListDefinedStoragePools.

Normally, all storage pools are returned; however, @flags can be used to filter the results for a smaller list of targeted pools. The valid flags are divided into groups, where each group contains bits that describe mutually exclusive attributes of a pool, and where all bits within a group describe all possible pools.

The first group of @flags is VIR_CONNECT_LIST_STORAGE_POOLS_ACTIVE (online) and VIR_CONNECT_LIST_STORAGE_POOLS_INACTIVE (offline) to filter the pools by state.

The second group of @flags is VIR_CONNECT_LIST_STORAGE_POOLS_PERSITENT (defined) and VIR_CONNECT_LIST_STORAGE_POOLS_TRANSIENT (running but not defined), to filter the pools by whether they have persistent config or not.

The third group of @flags is VIR_CONNECT_LIST_STORAGE_POOLS_AUTOSTART and VIR_CONNECT_LIST_STORAGE_POOLS_NO_AUTOSTART, to filter the pools by whether they are marked as autostart or not.

The last group of @flags is provided to filter the pools by the types, the flags include: VIR_CONNECT_LIST_STORAGE_POOLS_DIR VIR_CONNECT_LIST_STORAGE_POOLS_FS VIR_CONNECT_LIST_STORAGE_POOLS_NETFS VIR_CONNECT_LIST_STORAGE_POOLS_LOGICAL VIR_CONNECT_LIST_STORAGE_POOLS_DISK VIR_CONNECT_LIST_STORAGE_POOLS_ISCSI VIR_CONNECT_LIST_STORAGE_POOLS_SCSI VIR_CONNECT_LIST_STORAGE_POOLS_MPATH VIR_CONNECT_LIST_STORAGE_POOLS_RBD VIR_CONNECT_LIST_STORAGE_POOLS_SHEEPDOG

conn
  Pointer to the hypervisor connection.
pools
  Pointer to a variable to store the array containing storage pool objects or NULL if the list is not required (just returns number of pools).
flags
  bitwise-OR of virConnectListAllStoragePoolsFlags.
Returns
  the number of storage pools found or -1 and sets @pools to NULL in case of error. On success, the array stored into @pools is guaranteed to have an extra allocated element set to NULL but not included in the return count, to make iteration easier. The caller is responsible for calling virStoragePoolFree() on each array element, then calling free() on @pools.

### `virConnectListDefinedDomains`

    int	virConnectListDefinedDomains	(virConnectPtr conn,
    					 char ** const names,
    					 int maxnames)

list the defined but inactive domains, stores the pointers to the names in @names

For active domains, see virConnectListDomains(). For more control over the results, see virConnectListAllDomains().

conn
  pointer to the hypervisor connection
names
  pointer to an array to store the names
maxnames
  size of the array
Returns
  the number of names provided in the array or -1 in case of error. Note that this command is inherently racy; a domain can be defined between a call to virConnectNumOfDefinedDomains() and this call; you are only guaranteed that all currently defined domains were listed if the return is less than @maxids. The client must call free() on each returned name.

### `virConnectListDefinedInterfaces`

    int	virConnectListDefinedInterfaces	(virConnectPtr conn,
    					 char ** const names,
    					 int maxnames)

Collect the list of defined (inactive) physical host interfaces, and store their names in @names.

For more control over the results, see virConnectListAllInterfaces().

conn
  pointer to the hypervisor connection
names
  array to collect the list of names of interfaces
maxnames
  size of @names
Returns
  the number of names provided in the array or -1 in case of error. Note that this command is inherently racy; a interface can be defined between a call to virConnectNumOfDefinedInterfaces() and this call; you are only guaranteed that all currently defined interfaces were listed if the return is less than @maxnames. The client must call free() on each returned name.

### `virConnectListDefinedNetworks`

    int	virConnectListDefinedNetworks	(virConnectPtr conn,
    					 char ** const names,
    					 int maxnames)

list the inactive networks, stores the pointers to the names in @names

For more control over the results, see virConnectListAllNetworks().

conn
  pointer to the hypervisor connection
names
  pointer to an array to store the names
maxnames
  size of the array
Returns
  the number of names provided in the array or -1 in case of error. Note that this command is inherently racy; a network can be defined between a call to virConnectNumOfDefinedNetworks() and this call; you are only guaranteed that all currently defined networks were listed if the return is less than @maxnames. The client must call free() on each returned name.

### `virConnectListDefinedStoragePools`

    int	virConnectListDefinedStoragePools	(virConnectPtr conn,
    						 char ** const names,
    						 int maxnames)

Provides the list of names of inactive storage pools up to maxnames. If there are more than maxnames, the remaining names will be silently ignored.

For more control over the results, see virConnectListAllStoragePools().

conn
  pointer to hypervisor connection
names
  array of char * to fill with pool names (allocated by caller)
maxnames
  size of the names array
Returns
  the number of names provided in the array or -1 in case of error. Note that this command is inherently racy; a pool can be defined between a call to virConnectNumOfDefinedStoragePools() and this call; you are only guaranteed that all currently defined pools were listed if the return is less than @maxnames. The client must call free() on each returned name.

### `virConnectListDomains`

    int	virConnectListDomains		(virConnectPtr conn,
    					 int * ids,
    					 int maxids)

Collect the list of active domains, and store their IDs in array @ids

For inactive domains, see virConnectListDefinedDomains(). For more control over the results, see virConnectListAllDomains().

conn
  pointer to the hypervisor connection
ids
  array to collect the list of IDs of active domains
maxids
  size of @ids
Returns
  the number of domains found or -1 in case of error. Note that this command is inherently racy; a domain can be started between a call to virConnectNumOfDomains() and this call; you are only guaranteed that all currently active domains were listed if the return is less than @maxids.

### `virConnectListInterfaces`

    int	virConnectListInterfaces	(virConnectPtr conn,
    					 char ** const names,
    					 int maxnames)

Collect the list of active physical host interfaces, and store their names in @names

For more control over the results, see virConnectListAllInterfaces().

conn
  pointer to the hypervisor connection
names
  array to collect the list of names of interfaces
maxnames
  size of @names
Returns
  the number of interfaces found or -1 in case of error. Note that this command is inherently racy; a interface can be started between a call to virConnectNumOfInterfaces() and this call; you are only guaranteed that all currently active interfaces were listed if the return is less than @maxnames. The client must call free() on each returned name.

### `virConnectListNWFilters`

    int	virConnectListNWFilters		(virConnectPtr conn,
    					 char ** const names,
    					 int maxnames)

Collect the list of network filters, and store their names in @names

conn
  pointer to the hypervisor connection
names
  array to collect the list of names of network filters
maxnames
  size of @names
Returns
  the number of network filters found or -1 in case of error

### `virConnectListNetworks`

    int	virConnectListNetworks		(virConnectPtr conn,
    					 char ** const names,
    					 int maxnames)

Collect the list of active networks, and store their names in @names

For more control over the results, see virConnectListAllNetworks().

conn
  pointer to the hypervisor connection
names
  array to collect the list of names of active networks
maxnames
  size of @names
Returns
  the number of networks found or -1 in case of error. Note that this command is inherently racy; a network can be started between a call to virConnectNumOfNetworks() and this call; you are only guaranteed that all currently active networks were listed if the return is less than @maxnames. The client must call free() on each returned name.

### `virConnectListSecrets`

    int	virConnectListSecrets		(virConnectPtr conn,
    					 char ** uuids,
    					 int maxuuids)

List UUIDs of defined secrets, store pointers to names in uuids.

conn
  virConnect connection
uuids
  Pointer to an array to store the UUIDs
maxuuids
  size of the array.
Returns
  the number of UUIDs provided in the array, or -1 on failure.

### `virConnectListStoragePools`

    int	virConnectListStoragePools	(virConnectPtr conn,
    					 char ** const names,
    					 int maxnames)

Provides the list of names of active storage pools up to maxnames. If there are more than maxnames, the remaining names will be silently ignored.

For more control over the results, see virConnectListAllStoragePools().

conn
  pointer to hypervisor connection
names
  array of char * to fill with pool names (allocated by caller)
maxnames
  size of the names array
Returns
  the number of pools found or -1 in case of error. Note that this command is inherently racy; a pool can be started between a call to virConnectNumOfStoragePools() and this call; you are only guaranteed that all currently active pools were listed if the return is less than @maxnames. The client must call free() on each returned name.

### `virConnectNetworkEventDeregisterAny`

    int	virConnectNetworkEventDeregisterAny	(virConnectPtr conn,
    						 int callbackID)

Removes an event callback. The callbackID parameter should be the value obtained from a previous virConnectNetworkEventRegisterAny() method.

conn
  pointer to the connection
callbackID
  the callback identifier
Returns
  0 on success, -1 on failure

### `virConnectNetworkEventGenericCallback`

    typedef void	(*virConnectNetworkEventGenericCallback)	(virConnectPtr conn,
    						 virNetworkPtr net,
    						 void * opaque)

A generic network event callback handler, for use with virConnectNetworkEventRegisterAny(). Specific events usually have a customization with extra parameters, often with @opaque being passed in a different parameter position; use VIR_NETWORK_EVENT_CALLBACK() when registering an appropriate handler.

conn
  the connection pointer
net
  the network pointer
opaque
  application specified data

### `virConnectNetworkEventLifecycleCallback`

    typedef void	(*virConnectNetworkEventLifecycleCallback)	(virConnectPtr conn,
    						 virNetworkPtr net,
    						 int event,
    						 int detail,
    						 void * opaque)

This callback occurs when the network is started or stopped.

The callback signature to use when registering for an event of type VIR_NETWORK_EVENT_ID_LIFECYCLE with virConnectNetworkEventRegisterAny()

conn
  connection object
net
  network on which the event occurred
event
  The specific virNetworkEventLifeCycleType which occurred
detail
  contains some details on the reason of the event. It will be 0 for the while.
opaque
  application specified data

### `virConnectNetworkEventRegisterAny`

    int	virConnectNetworkEventRegisterAny	(virConnectPtr conn,
    						 virNetworkPtr net,
    						 int eventID,
    						 virConnectNetworkEventGenericCallback cb,
    						 void * opaque,
    						 virFreeCallback freecb)

Adds a callback to receive notifications of arbitrary network events occurring on a network. This function requires that an event loop has been previously registered with virEventRegisterImpl() or virEventRegisterDefaultImpl().

If @net is NULL, then events will be monitored for any network. If @net is non-NULL, then only the specific network will be monitored.

Most types of event have a callback providing a custom set of parameters for the event. When registering an event, it is thus necessary to use the VIR_NETWORK_EVENT_CALLBACK() macro to cast the supplied function pointer to match the signature of this method.

The virNetworkPtr object handle passed into the callback upon delivery of an event is only valid for the duration of execution of the callback. If the callback wishes to keep the network object after the callback returns, it shall take a reference to it, by calling virNetworkRef(). The reference can be released once the object is no longer required by calling virNetworkFree().

The return value from this method is a positive integer identifier for the callback. To unregister a callback, this callback ID should be passed to the virConnectNetworkEventDeregisterAny() method.

conn
  pointer to the connection
net
  pointer to the network
eventID
  the event type to receive
cb
  callback to the function handling network events
opaque
  opaque data to pass on to the callback
freecb
  optional function to deallocate opaque when not used anymore
Returns
  a callback identifier on success, -1 on failure.

### `virConnectNumOfDefinedDomains`

    int	virConnectNumOfDefinedDomains	(virConnectPtr conn)

Provides the number of defined but inactive domains.

conn
  pointer to the hypervisor connection
Returns
  the number of domain found or -1 in case of error

### `virConnectNumOfDefinedInterfaces`

    int	virConnectNumOfDefinedInterfaces	(virConnectPtr conn)

Provides the number of defined (inactive) interfaces on the physical host.

conn
  pointer to the hypervisor connection
Returns
  the number of defined interface found or -1 in case of error

### `virConnectNumOfDefinedNetworks`

    int	virConnectNumOfDefinedNetworks	(virConnectPtr conn)

Provides the number of inactive networks.

conn
  pointer to the hypervisor connection
Returns
  the number of networks found or -1 in case of error

### `virConnectNumOfDefinedStoragePools`

    int	virConnectNumOfDefinedStoragePools	(virConnectPtr conn)

Provides the number of inactive storage pools

conn
  pointer to hypervisor connection
Returns
  the number of pools found, or -1 on error

### `virConnectNumOfDomains`

    int	virConnectNumOfDomains		(virConnectPtr conn)

Provides the number of active domains.

conn
  pointer to the hypervisor connection
Returns
  the number of domain found or -1 in case of error

### `virConnectNumOfInterfaces`

    int	virConnectNumOfInterfaces	(virConnectPtr conn)

Provides the number of active interfaces on the physical host.

conn
  pointer to the hypervisor connection
Returns
  the number of active interfaces found or -1 in case of error

### `virConnectNumOfNWFilters`

    int	virConnectNumOfNWFilters	(virConnectPtr conn)

Provides the number of nwfilters.

conn
  pointer to the hypervisor connection
Returns
  the number of nwfilters found or -1 in case of error

### `virConnectNumOfNetworks`

    int	virConnectNumOfNetworks		(virConnectPtr conn)

Provides the number of active networks.

conn
  pointer to the hypervisor connection
Returns
  the number of network found or -1 in case of error

### `virConnectNumOfSecrets`

    int	virConnectNumOfSecrets		(virConnectPtr conn)

Fetch number of currently defined secrets.

conn
  virConnect connection
Returns
  the number currently defined secrets.

### `virConnectNumOfStoragePools`

    int	virConnectNumOfStoragePools	(virConnectPtr conn)

Provides the number of active storage pools

conn
  pointer to hypervisor connection
Returns
  the number of pools found, or -1 on error

### `virConnectOpen`

    virConnectPtr	virConnectOpen		(const char * name)

This function should be called first to get a connection to the Hypervisor and xen store

If @name is NULL, if the LIBVIRT_DEFAULT_URI environment variable is set, then it will be used. Otherwise if the client configuration file has the "uri_default" parameter set, then it will be used. Finally probing will be done to determine a suitable default driver to activate. This involves trying each hypervisor in turn until one successfully opens.

If connecting to an unprivileged hypervisor driver which requires the libvirtd daemon to be active, it will automatically be launched if not already running. This can be prevented by setting the environment variable LIBVIRT_AUTOSTART=0

URIs are documented at http://libvirt.org/uri.html

virConnectClose should be used to release the resources after the connection is no longer needed.

name
  (optional) URI of the hypervisor
Returns
  a pointer to the hypervisor connection or NULL in case of error

### `virConnectOpenAuth`

    virConnectPtr	virConnectOpenAuth	(const char * name,
    					 virConnectAuthPtr auth,
    					 unsigned int flags)

This function should be called first to get a connection to the Hypervisor. If necessary, authentication will be performed fetching credentials via the callback

See virConnectOpen for notes about environment variables which can have an effect on opening drivers and freeing the connection resources

URIs are documented at http://libvirt.org/uri.html

name
  (optional) URI of the hypervisor
auth
  Authenticate callback parameters
flags
  bitwise-OR of virConnectFlags
Returns
  a pointer to the hypervisor connection or NULL in case of error

### `virConnectOpenReadOnly`

    virConnectPtr	virConnectOpenReadOnly	(const char * name)

This function should be called first to get a restricted connection to the library functionalities. The set of APIs usable are then restricted on the available methods to control the domains.

See virConnectOpen for notes about environment variables which can have an effect on opening drivers and freeing the connection resources

URIs are documented at http://libvirt.org/uri.html

name
  (optional) URI of the hypervisor
Returns
  a pointer to the hypervisor connection or NULL in case of error

### `virConnectRef`

    int	virConnectRef			(virConnectPtr conn)

Increment the reference count on the connection. For each additional call to this method, there shall be a corresponding call to virConnectClose to release the reference count, once the caller no longer needs the reference to this object.

This method is typically useful for applications where multiple threads are using a connection, and it is required that the connection remain open until all threads have finished using it. ie, each new thread using a connection would increment the reference count.

conn
  the connection to hold a reference on
Returns
  0 in case of success, -1 in case of failure

### `virConnectRegisterCloseCallback`

    int	virConnectRegisterCloseCallback	(virConnectPtr conn,
    					 virConnectCloseFunc cb,
    					 void * opaque,
    					 virFreeCallback freecb)

Registers a callback to be invoked when the connection is closed. This callback is invoked when there is any condition that causes the socket connection to the hypervisor to be closed.

This function is only applicable to hypervisor drivers which maintain a persistent open connection. Drivers which open a new connection for every operation will not invoke this.

The @freecb must not invoke any other libvirt public APIs, since it is not called from a re-entrant safe context.

conn
  pointer to connection object
cb
  callback to invoke upon close
opaque
  user data to pass to @cb
freecb
  callback to free @opaque
Returns
  0 on success, -1 on error

### `virConnectSetKeepAlive`

    int	virConnectSetKeepAlive		(virConnectPtr conn,
    					 int interval,
    					 unsigned int count)

Start sending keepalive messages after @interval seconds of inactivity and consider the connection to be broken when no response is received after @count keepalive messages sent in a row. In other words, sending count + 1 keepalive message results in closing the connection. When @interval is <= 0, no keepalive messages will be sent. When @count is 0, the connection will be automatically closed after @interval seconds of inactivity without sending any keepalive messages.

Note: The client has to implement and run an event loop with virEventRegisterImpl() or virEventRegisterDefaultImpl() to be able to use keepalive messages. Failure to do so may result in connections being closed unexpectedly.

Note: This API function controls only keepalive messages sent by the client. If the server is configured to use keepalive you still need to run the event loop to respond to them, even if you disable keepalives by this function.

conn
  pointer to a hypervisor connection
interval
  number of seconds of inactivity before a keepalive message is sent
count
  number of messages that can be sent in a row
Returns
  -1 on error, 0 on success, 1 when remote party doesn't support keepalive messages.

### `virConnectUnregisterCloseCallback`

    int	virConnectUnregisterCloseCallback	(virConnectPtr conn,
    						 virConnectCloseFunc cb)

Unregisters the callback previously set with the virConnectRegisterCloseCallback method. The callback will no longer receive notifications when the connection closes. If a virFreeCallback was provided at time of registration, it will be invoked

conn
  pointer to connection object
cb
  pointer to the current registered callback
Returns
  0 on success, -1 on error

### `virDomainAbortJob`

    int	virDomainAbortJob		(virDomainPtr domain)

Requests that the current background job be aborted at the soonest opportunity.

domain
  a domain object
Returns
  0 in case of success and -1 in case of failure.

### `virDomainAttachDevice`

    int	virDomainAttachDevice		(virDomainPtr domain,
    					 const char * xml)

Create a virtual device attachment to backend. This function, having hotplug semantics, is only allowed on an active domain.

For compatibility, this method can also be used to change the media in an existing CDROM/Floppy device, however, applications are recommended to use the virDomainUpdateDeviceFlag method instead.

Be aware that hotplug changes might not persist across a domain going into S4 state (also known as hibernation) unless you also modify the persistent domain definition.

domain
  pointer to domain object
xml
  pointer to XML description of one device
Returns
  0 in case of success, -1 in case of failure.

### `virDomainAttachDeviceFlags`

    int	virDomainAttachDeviceFlags	(virDomainPtr domain,
    					 const char * xml,
    					 unsigned int flags)

Attach a virtual device to a domain, using the flags parameter to control how the device is attached. VIR_DOMAIN_AFFECT_CURRENT specifies that the device allocation is made based on current domain state. VIR_DOMAIN_AFFECT_LIVE specifies that the device shall be allocated to the active domain instance only and is not added to the persisted domain configuration. VIR_DOMAIN_AFFECT_CONFIG specifies that the device shall be allocated to the persisted domain configuration only. Note that the target hypervisor must return an error if unable to satisfy flags. E.g. the hypervisor driver will return failure if LIVE is specified but it only supports modifying the persisted device allocation.

For compatibility, this method can also be used to change the media in an existing CDROM/Floppy device, however, applications are recommended to use the virDomainUpdateDeviceFlag method instead.

Be aware that hotplug changes might not persist across a domain going into S4 state (also known as hibernation) unless you also modify the persistent domain definition.

domain
  pointer to domain object
xml
  pointer to XML description of one device
flags
  bitwise-OR of virDomainDeviceModifyFlags
Returns
  0 in case of success, -1 in case of failure.

### `virDomainBlockCommit`

    int	virDomainBlockCommit		(virDomainPtr dom,
    					 const char * disk,
    					 const char * base,
    					 const char * top,
    					 unsigned long bandwidth,
    					 unsigned int flags)

Commit changes that were made to temporary top-level files within a disk image backing file chain into a lower-level base file. In other words, take all the difference between @base and @top, and update @base to contain that difference; after the commit, any portion of the chain that previously depended on @top will now depend on @base, and all files after @base up to and including @top will now be invalidated. A typical use of this command is to reduce the length of a backing file chain after taking an external disk snapshot. To move data in the opposite direction, see virDomainBlockPull().

This command starts a long-running commit block job, whose status may be tracked by virDomainBlockJobInfo() with a job type of VIR_DOMAIN_BLOCK_JOB_TYPE_COMMIT, and the operation can be aborted with virDomainBlockJobAbort(). When finished, an asynchronous event is raised to indicate the final status, and the job no longer exists. If the job is aborted, it is up to the hypervisor whether starting a new job will resume from the same point, or start over.

As a special case, if @top is the active image (or NULL), and @flags includes VIR_DOMAIN_BLOCK_COMMIT_ACTIVE, the block job will have a type of VIR_DOMAIN_BLOCK_JOB_TYPE_ACTIVE_COMMIT, and operates in two phases. In the first phase, the contents are being committed into @base, and the job can only be canceled. The job transitions to the second phase when the job info states cur == end, and remains alive to keep all further changes to @top synchronized into @base; an event with status VIR_DOMAIN_BLOCK_JOB_READY is also issued to mark the job transition. Once in the second phase, the user must choose whether to cancel the job (keeping @top as the active image, but now containing only the changes since the time the job ended) or to pivot the job (adjusting to @base as the active image, and invalidating @top).

Be aware that this command may invalidate files even if it is aborted; the user is cautioned against relying on the contents of invalidated intermediate files such as @top (when @top is not the active image) without manually rebasing those files to use a backing file of a read-only copy of @base prior to the point where the commit operation was started (and such a rebase cannot be safely done until the commit has successfully completed). However, the domain itself will not have any issues; the active layer remains valid throughout the entire commit operation.

Some hypervisors may support a shortcut where if @flags contains VIR_DOMAIN_BLOCK_COMMIT_DELETE, then this command will unlink all files that were invalidated, after the commit successfully completes.

If @flags contains VIR_DOMAIN_BLOCK_COMMIT_RELATIVE, the name recorded into the overlay of the @top image (if there is such image) as the path to the new backing file will be kept relative to other images. The operation will fail if libvirt can't infer the name.

By default, if @base is NULL, the commit target will be the bottom of the backing chain; if @flags contains VIR_DOMAIN_BLOCK_COMMIT_SHALLOW, then the immediate backing file of @top will be used instead. If @top is NULL, the active image at the top of the chain will be used. Some hypervisors place restrictions on how much can be committed, and might fail if @base is not the immediate backing file of @top, or if @top is the active layer in use by a running domain but @flags did not include VIR_DOMAIN_BLOCK_COMMIT_ACTIVE, or if @top is not the top-most file; restrictions may differ for online vs. offline domains.

The @disk parameter is either an unambiguous source name of the block device (the <source file='...'/> sub-element, such as "/path/to/image"), or the device target shorthand (the <target dev='...'/> sub-element, such as "vda"). Valid names can be found by calling virDomainGetXMLDesc() and inspecting elements within //domain/devices/disk.

The @base and @top parameters can be either paths to files within the backing chain, or the device target shorthand (the <target dev='...'/> sub-element, such as "vda") followed by an index to the backing chain enclosed in square brackets. Backing chain indexes can be found by inspecting //disk//backingStore/@index in the domain XML. Thus, for example, "vda[3]" refers to the backing store with index equal to "3" in the chain of disk "vda".

The maximum bandwidth that will be used to do the commit can be specified with the @bandwidth parameter. If set to 0, there is no limit. If @flags includes VIR_DOMAIN_BLOCK_COMMIT_BANDWIDTH_BYTES, @bandwidth is in bytes/second; otherwise, it is in MiB/second. Values larger than 2^52 bytes/sec may be rejected due to overflow considerations based on the word size of both client and server, and values larger than 2^31 bytes/sec may cause overflow problems if later queried by virDomainGetBlockJobInfo() without scaling. Hypervisors may further restrict the range of valid bandwidth values. Some hypervisors do not support this feature and will return an error if bandwidth is not 0; in this case, it might still be possible for a later call to virDomainBlockJobSetSpeed() to succeed. The actual speed can be determined with virDomainGetBlockJobInfo().

dom
  pointer to domain object
disk
  path to the block device, or device shorthand
base
  path to backing file to merge into, or device shorthand, or NULL for default
top
  path to file within backing chain that contains data to be merged, or device shorthand, or NULL to merge all possible data
bandwidth
  (optional) specify bandwidth limit; flags determine the unit
flags
  bitwise-OR of virDomainBlockCommitFlags
Returns
  0 if the operation has started, -1 on failure.

### `virDomainBlockCopy`

    int	virDomainBlockCopy		(virDomainPtr dom,
    					 const char * disk,
    					 const char * destxml,
    					 virTypedParameterPtr params,
    					 int nparams,
    					 unsigned int flags)

Copy the guest-visible contents of a disk image to a new file described by @destxml. The destination XML has a top-level element of <disk>, and resembles what is used when hot-plugging a disk via virDomainAttachDevice(), except that only sub-elements related to describing the new host resource are necessary (sub-elements related to the guest view, such as <target>, are ignored). It is strongly recommended to include a <driver type='...'/> format designation for the destination, to avoid the potential of any security problem that might be caused by probing a file for its format.

This command starts a long-running copy. By default, the copy will pull the entire source chain into the destination file, but if @flags also contains VIR_DOMAIN_BLOCK_COPY_SHALLOW, then only the top of the source chain will be copied (the source and destination have a common backing file). The format of the destination file is controlled by the <driver> sub-element of the XML. The destination will be created unless the VIR_DOMAIN_BLOCK_COPY_REUSE_EXT flag is present stating that the file was pre-created with the correct format and metadata and sufficient size to hold the copy. In case the VIR_DOMAIN_BLOCK_COPY_SHALLOW flag is used the pre-created file has to exhibit the same guest visible contents as the backing file of the original image. This allows a management app to pre-create files with relative backing file names, rather than the default of absolute backing file names.

A copy job has two parts; in the first phase, the source is copied into the destination, and the job can only be canceled by reverting to the source file; progress in this phase can be tracked via the virDomainBlockJobInfo() command, with a job type of VIR_DOMAIN_BLOCK_JOB_TYPE_COPY. The job transitions to the second phase when the job info states cur == end, and remains alive to mirror all further changes to both source and destination. The user must call virDomainBlockJobAbort() to end the mirroring while choosing whether to revert to source or pivot to the destination. An event is issued when the job ends, and depending on the hypervisor, an event may also be issued when the job transitions from pulling to mirroring. If the job is aborted, a new job will have to start over from the beginning of the first phase.

Some hypervisors will restrict certain actions, such as virDomainSave() or virDomainDetachDevice(), while a copy job is active; they may also restrict a copy job to transient domains.

The @disk parameter is either an unambiguous source name of the block device (the <source file='...'/> sub-element, such as "/path/to/image"), or the device target shorthand (the <target dev='...'/> sub-element, such as "vda"). Valid names can be found by calling virDomainGetXMLDesc() and inspecting elements within //domain/devices/disk.

The @params and @nparams arguments can be used to set hypervisor-specific tuning parameters, such as maximum bandwidth or granularity. For a parameter that the hypervisor understands, explicitly specifying 0 behaves the same as omitting the parameter, to use the hypervisor default; however, omitting a parameter is less likely to fail.

This command is a superset of the older virDomainBlockRebase() when used with the VIR_DOMAIN_BLOCK_REBASE_COPY flag, and offers better control over the destination format, the ability to copy to a destination that is not a local file, and the possibility of additional tuning parameters.

dom
  pointer to domain object
disk
  path to the block device, or device shorthand
destxml
  XML description of the copy destination
params
  Pointer to block copy parameter objects, or NULL
nparams
  Number of block copy parameters (this value can be the same or less than the number of parameters supported)
flags
  bitwise-OR of virDomainBlockCopyFlags
Returns
  0 if the operation has started, -1 on failure.

### `virDomainBlockJobAbort`

    int	virDomainBlockJobAbort		(virDomainPtr dom,
    					 const char * disk,
    					 unsigned int flags)

Cancel the active block job on the given disk.

The @disk parameter is either an unambiguous source name of the block device (the <source file='...'/> sub-element, such as "/path/to/image"), or (since 0.9.5) the device target shorthand (the <target dev='...'/> sub-element, such as "vda"). Valid names can be found by calling virDomainGetXMLDesc() and inspecting elements within //domain/devices/disk.

If the current block job for @disk is VIR_DOMAIN_BLOCK_JOB_TYPE_PULL, then by default, this function performs a synchronous operation and the caller may assume that the operation has completed when 0 is returned. However, BlockJob operations may take a long time to cancel, and during this time further domain interactions may be unresponsive. To avoid this problem, pass VIR_DOMAIN_BLOCK_JOB_ABORT_ASYNC in the @flags argument to enable asynchronous behavior, returning as soon as possible. When the job has been canceled, a BlockJob event will be emitted, with status VIR_DOMAIN_BLOCK_JOB_CANCELED (even if the ABORT_ASYNC flag was not used); it is also possible to poll virDomainBlockJobInfo() to see if the job cancellation is still pending. This type of job can be restarted to pick up from where it left off.

If the current block job for @disk is VIR_DOMAIN_BLOCK_JOB_TYPE_COPY, then the default is to abort the mirroring and revert to the source disk; likewise, if the current job is VIR_DOMAIN_BLOCK_JOB_TYPE_ACTIVE_COMMIT, the default is to abort without changing the active layer of @disk. Adding @flags of VIR_DOMAIN_BLOCK_JOB_ABORT_PIVOT causes this call to fail with VIR_ERR_BLOCK_COPY_ACTIVE if the copy or commit is not yet ready; otherwise it will swap the disk over to the new active image to end the mirroring or active commit. An event will be issued when the job is ended, and it is possible to use VIR_DOMAIN_BLOCK_JOB_ABORT_ASYNC to control whether this command waits for the completion of the job. Restarting a copy or active commit job requires starting over from the beginning of the first phase.

dom
  pointer to domain object
disk
  path to the block device, or device shorthand
flags
  bitwise-OR of virDomainBlockJobAbortFlags
Returns
  -1 in case of failure, 0 when successful.

### `virDomainBlockJobSetSpeed`

    int	virDomainBlockJobSetSpeed	(virDomainPtr dom,
    					 const char * disk,
    					 unsigned long bandwidth,
    					 unsigned int flags)

Set the maximimum allowable bandwidth that a block job may consume. If bandwidth is 0, the limit will revert to the hypervisor default of unlimited.

If @flags contains VIR_DOMAIN_BLOCK_JOB_SPEED_BANDWIDTH_BYTES, @bandwidth is in bytes/second; otherwise, it is in MiB/second. Values larger than 2^52 bytes/sec may be rejected due to overflow considerations based on the word size of both client and server, and values larger than 2^31 bytes/sec may cause overflow problems if later queried by virDomainGetBlockJobInfo() without scaling. Hypervisors may further restrict the range of valid bandwidth values.

The @disk parameter is either an unambiguous source name of the block device (the <source file='...'/> sub-element, such as "/path/to/image"), or (since 0.9.5) the device target shorthand (the <target dev='...'/> sub-element, such as "vda"). Valid names can be found by calling virDomainGetXMLDesc() and inspecting elements within //domain/devices/disk.

dom
  pointer to domain object
disk
  path to the block device, or device shorthand
bandwidth
  specify bandwidth limit; flags determine the unit
flags
  bitwise-OR of virDomainBlockJobSetSpeedFlags
Returns
  -1 in case of failure, 0 when successful.

### `virDomainBlockPeek`

    int	virDomainBlockPeek		(virDomainPtr dom,
    					 const char * disk,
    					 unsigned long long offset,
    					 size_t size,
    					 void * buffer,
    					 unsigned int flags)

This function allows you to read the contents of a domain's disk device.

Typical uses for this are to determine if the domain has written a Master Boot Record (indicating that the domain has completed installation), or to try to work out the state of the domain's filesystems.

(Note that in the local case you might try to open the block device or file directly, but that won't work in the remote case, nor if you don't have sufficient permission. Hence the need for this call).

The @disk parameter is either an unambiguous source name of the block device (the <source file='...'/> sub-element, such as "/path/to/image"), or (since 0.9.5) the device target shorthand (the <target dev='...'/> sub-element, such as "vda"). Valid names can be found by calling virDomainGetXMLDesc() and inspecting elements within //domain/devices/disk.

'offset' and 'size' represent an area which must lie entirely within the device or file. 'size' may be 0 to test if the call would succeed.

'buffer' is the return buffer and must be at least 'size' bytes.

NB. The remote driver imposes a 64K byte limit on 'size'. For your program to be able to work reliably over a remote connection you should split large requests to <= 65536 bytes. However, with 0.9.13 this RPC limit has been raised to 1M byte. Starting with version 1.0.6 the RPC limit has been raised again. Now large requests up to 16M byte are supported.

dom
  pointer to the domain object
disk
  path to the block device, or device shorthand
offset
  offset within block device
size
  size to read
buffer
  return buffer (must be at least size bytes)
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  0 in case of success or -1 in case of failure. really 64 bits

### `virDomainBlockPull`

    int	virDomainBlockPull		(virDomainPtr dom,
    					 const char * disk,
    					 unsigned long bandwidth,
    					 unsigned int flags)

Populate a disk image with data from its backing image. Once all data from its backing image has been pulled, the disk no longer depends on a backing image. This function pulls data for the entire device in the background. Progress of the operation can be checked with virDomainGetBlockJobInfo() and the operation can be aborted with virDomainBlockJobAbort(). When finished, an asynchronous event is raised to indicate the final status. To move data in the opposite direction, see virDomainBlockCommit().

The @disk parameter is either an unambiguous source name of the block device (the <source file='...'/> sub-element, such as "/path/to/image"), or (since 0.9.5) the device target shorthand (the <target dev='...'/> sub-element, such as "vda"). Valid names can be found by calling virDomainGetXMLDesc() and inspecting elements within //domain/devices/disk.

The maximum bandwidth that will be used to do the copy can be specified with the @bandwidth parameter. If set to 0, there is no limit. If @flags includes VIR_DOMAIN_BLOCK_PULL_BANDWIDTH_BYTES, @bandwidth is in bytes/second; otherwise, it is in MiB/second. Values larger than 2^52 bytes/sec may be rejected due to overflow considerations based on the word size of both client and server, and values larger than 2^31 bytes/sec may cause overflow problems if later queried by virDomainGetBlockJobInfo() without scaling. Hypervisors may further restrict the range of valid bandwidth values. Some hypervisors do not support this feature and will return an error if bandwidth is not 0; in this case, it might still be possible for a later call to virDomainBlockJobSetSpeed() to succeed. The actual speed can be determined with virDomainGetBlockJobInfo().

This is shorthand for virDomainBlockRebase() with a NULL base.

dom
  pointer to domain object
disk
  path to the block device, or device shorthand
bandwidth
  (optional) specify bandwidth limit; flags determine the unit
flags
  bitwise-OR of virDomainBlockPullFlags
Returns
  0 if the operation has started, -1 on failure.

### `virDomainBlockRebase`

    int	virDomainBlockRebase		(virDomainPtr dom,
    					 const char * disk,
    					 const char * base,
    					 unsigned long bandwidth,
    					 unsigned int flags)

Populate a disk image with data from its backing image chain, and setting the backing image to @base, or alternatively copy an entire backing chain to a new file @base.

When @flags is 0, this starts a pull, where @base must be the absolute path of one of the backing images further up the chain, or NULL to convert the disk image so that it has no backing image. Once all data from its backing image chain has been pulled, the disk no longer depends on those intermediate backing images. This function pulls data for the entire device in the background. Progress of the operation can be checked with virDomainGetBlockJobInfo() with a job type of VIR_DOMAIN_BLOCK_JOB_TYPE_PULL, and the operation can be aborted with virDomainBlockJobAbort(). When finished, an asynchronous event is raised to indicate the final status, and the job no longer exists. If the job is aborted, a new one can be started later to resume from the same point.

If @flags contains VIR_DOMAIN_BLOCK_REBASE_RELATIVE, the name recorded into the active disk as the location for @base will be kept relative. The operation will fail if libvirt can't infer the name.

When @flags includes VIR_DOMAIN_BLOCK_REBASE_COPY, this starts a copy, where @base must be the name of a new file to copy the chain to. By default, the copy will pull the entire source chain into the destination file, but if @flags also contains VIR_DOMAIN_BLOCK_REBASE_SHALLOW, then only the top of the source chain will be copied (the source and destination have a common backing file). By default, @base will be created with the same file format as the source, but this can be altered by adding VIR_DOMAIN_BLOCK_REBASE_COPY_RAW to force the copy to be raw (does not make sense with the shallow flag unless the source is also raw), or by using VIR_DOMAIN_BLOCK_REBASE_REUSE_EXT to reuse an existing file which was pre-created with the correct format and metadata and sufficient size to hold the copy. In case the VIR_DOMAIN_BLOCK_REBASE_SHALLOW flag is used the pre-created file has to exhibit the same guest visible contents as the backing file of the original image. This allows a management app to pre-create files with relative backing file names, rather than the default of absolute backing file names; as a security precaution, you should generally only use reuse_ext with the shallow flag and a non-raw destination file. By default, the copy destination will be treated as type='file', but using VIR_DOMAIN_BLOCK_REBASE_COPY_DEV treats the destination as type='block' (affecting how virDomainGetBlockInfo() will report allocation after pivoting).

A copy job has two parts; in the first phase, the @bandwidth parameter affects how fast the source is pulled into the destination, and the job can only be canceled by reverting to the source file; progress in this phase can be tracked via the virDomainBlockJobInfo() command, with a job type of VIR_DOMAIN_BLOCK_JOB_TYPE_COPY. The job transitions to the second phase when the job info states cur == end, and remains alive to mirror all further changes to both source and destination. The user must call virDomainBlockJobAbort() to end the mirroring while choosing whether to revert to source or pivot to the destination. An event is issued when the job ends, and depending on the hypervisor, an event may also be issued when the job transitions from pulling to mirroring. If the job is aborted, a new job will have to start over from the beginning of the first phase.

Some hypervisors will restrict certain actions, such as virDomainSave() or virDomainDetachDevice(), while a copy job is active; they may also restrict a copy job to transient domains.

The @disk parameter is either an unambiguous source name of the block device (the <source file='...'/> sub-element, such as "/path/to/image"), or the device target shorthand (the <target dev='...'/> sub-element, such as "vda"). Valid names can be found by calling virDomainGetXMLDesc() and inspecting elements within //domain/devices/disk.

The @base parameter can be either a path to a file within the backing chain, or the device target shorthand (the <target dev='...'/> sub-element, such as "vda") followed by an index to the backing chain enclosed in square brackets. Backing chain indexes can be found by inspecting //disk//backingStore/@index in the domain XML. Thus, for example, "vda[3]" refers to the backing store with index equal to "3" in the chain of disk "vda".

The maximum bandwidth that will be used to do the copy can be specified with the @bandwidth parameter. If set to 0, there is no limit. If @flags includes VIR_DOMAIN_BLOCK_REBASE_BANDWIDTH_BYTES, @bandwidth is in bytes/second; otherwise, it is in MiB/second. Values larger than 2^52 bytes/sec may be rejected due to overflow considerations based on the word size of both client and server, and values larger than 2^31 bytes/sec may cause overflow problems if later queried by virDomainGetBlockJobInfo() without scaling. Hypervisors may further restrict the range of valid bandwidth values. Some hypervisors do not support this feature and will return an error if bandwidth is not 0; in this case, it might still be possible for a later call to virDomainBlockJobSetSpeed() to succeed. The actual speed can be determined with virDomainGetBlockJobInfo().

When @base is NULL and @flags is 0, this is identical to virDomainBlockPull(). When @flags contains VIR_DOMAIN_BLOCK_REBASE_COPY, this command is shorthand for virDomainBlockCopy() where the destination XML encodes @base as a <disk type='file'>, @bandwidth is properly scaled and passed as a typed parameter, the shallow and reuse external flags are preserved, and remaining flags control whether the XML encodes a destination format of raw instead of leaving the destination identical to the source format or probed from the reused file.

dom
  pointer to domain object
disk
  path to the block device, or device shorthand
base
  path to backing file to keep, or device shorthand, or NULL for no backing file
bandwidth
  (optional) specify bandwidth limit; flags determine the unit
flags
  bitwise-OR of virDomainBlockRebaseFlags
Returns
  0 if the operation has started, -1 on failure.

### `virDomainBlockResize`

    int	virDomainBlockResize		(virDomainPtr dom,
    					 const char * disk,
    					 unsigned long long size,
    					 unsigned int flags)

Resize a block device of domain while the domain is running. If @flags is 0, then @size is in kibibytes (blocks of 1024 bytes); since 0.9.11, if @flags includes VIR_DOMAIN_BLOCK_RESIZE_BYTES, @size is in bytes instead. @size is taken directly as the new size. Depending on the file format, the hypervisor may round up to the next alignment boundary.

The @disk parameter is either an unambiguous source name of the block device (the <source file='...'/> sub-element, such as "/path/to/image"), or (since 0.9.5) the device target shorthand (the <target dev='...'/> sub-element, such as "vda"). Valid names can be found by calling virDomainGetXMLDesc() and inspecting elements within //domain/devices/disk.

Note that this call may fail if the underlying virtualization hypervisor does not support it; this call requires privileged access to the hypervisor.

dom
  pointer to the domain object
disk
  path to the block image, or shorthand
size
  new size of the block image, see below for unit
flags
  bitwise-OR of virDomainBlockResizeFlags
Returns
  0 in case of success or -1 in case of failure.

### `virDomainBlockStats`

    int	virDomainBlockStats		(virDomainPtr dom,
    					 const char * disk,
    					 virDomainBlockStatsPtr stats,
    					 size_t size)

This function returns block device (disk) stats for block devices attached to the domain.

The @disk parameter is either the device target shorthand (the <target dev='...'/> sub-element, such as "vda"), or (since 0.9.8) an unambiguous source name of the block device (the <source file='...'/> sub-element, such as "/path/to/image"). Valid names can be found by calling virDomainGetXMLDesc() and inspecting elements within //domain/devices/disk. Some drivers might also accept the empty string for the @disk parameter, and then yield summary stats for the entire domain.

Domains may have more than one block device. To get stats for each you should make multiple calls to this function.

Individual fields within the stats structure may be returned as -1, which indicates that the hypervisor does not support that particular statistic.

dom
  pointer to the domain object
disk
  path to the block device, or device shorthand
stats
  block device stats (returned)
size
  size of stats structure
Returns
  0 in case of success or -1 in case of failure.

### `virDomainBlockStatsFlags`

    int	virDomainBlockStatsFlags	(virDomainPtr dom,
    					 const char * disk,
    					 virTypedParameterPtr params,
    					 int * nparams,
    					 unsigned int flags)

This function is to get block stats parameters for block devices attached to the domain.

The @disk parameter is either the device target shorthand (the <target dev='...'/> sub-element, such as "vda"), or (since 0.9.8) an unambiguous source name of the block device (the <source file='...'/> sub-element, such as "/path/to/image"). Valid names can be found by calling virDomainGetXMLDesc() and inspecting elements within //domain/devices/disk. Some drivers might also accept the empty string for the @disk parameter, and then yield summary stats for the entire domain.

Domains may have more than one block device. To get stats for each you should make multiple calls to this function.

On input, @nparams gives the size of the @params array; on output, @nparams gives how many slots were filled with parameter information, which might be less but will not exceed the input value.

As a special case, calling with @params as NULL and @nparams as 0 on input will cause @nparams on output to contain the number of parameters supported by the hypervisor. (Note that block devices of different types might support different parameters, so it might be necessary to compute @nparams for each block device). The caller should then allocate @params array, i.e. (sizeof(@virTypedParameter) * @nparams) bytes and call the API again. See virDomainGetMemoryParameters() for more details.

dom
  pointer to domain object
disk
  path to the block device, or device shorthand
params
  pointer to block stats parameter object (return value, allocated by the caller)
nparams
  pointer to number of block stats; input and output
flags
  bitwise-OR of virTypedParameterFlags
Returns
  -1 in case of error, 0 in case of success.

### `virDomainCoreDump`

    int	virDomainCoreDump		(virDomainPtr domain,
    					 const char * to,
    					 unsigned int flags)

This method will dump the core of a domain on a given file for analysis. Note that for remote Xen Daemon the file path will be interpreted in the remote host. Hypervisors may require the user to manually ensure proper permissions on the file named by @to.

If @flags includes VIR_DUMP_CRASH, then leave the guest shut off with a crashed state after the dump completes. If @flags includes VIR_DUMP_LIVE, then make the core dump while continuing to allow the guest to run; otherwise, the guest is suspended during the dump. VIR_DUMP_RESET flag forces reset of the guest after dump. The above three flags are mutually exclusive.

Additionally, if @flags includes VIR_DUMP_BYPASS_CACHE, then libvirt will attempt to bypass the file system cache while creating the file, or fail if it cannot do so for the given system; this can allow less pressure on file system cache, but also risks slowing saves to NFS.

For more control over the output format, see virDomainCoreDumpWithFormat().

domain
  a domain object
to
  path for the core file
flags
  bitwise-OR of virDomainCoreDumpFlags
Returns
  0 in case of success and -1 in case of failure.

### `virDomainCoreDumpWithFormat`

    int	virDomainCoreDumpWithFormat	(virDomainPtr domain,
    					 const char * to,
    					 unsigned int dumpformat,
    					 unsigned int flags)

This method will dump the core of a domain on a given file for analysis. Note that for remote Xen Daemon the file path will be interpreted in the remote host. Hypervisors may require the user to manually ensure proper permissions on the file named by @to.

@dumpformat controls which format the dump will have; use of VIR_DOMAIN_CORE_DUMP_FORMAT_RAW mirrors what virDomainCoreDump() will perform. Not all hypervisors are able to support all formats.

If @flags includes VIR_DUMP_CRASH, then leave the guest shut off with a crashed state after the dump completes. If @flags includes VIR_DUMP_LIVE, then make the core dump while continuing to allow the guest to run; otherwise, the guest is suspended during the dump. VIR_DUMP_RESET flag forces reset of the guest after dump. The above three flags are mutually exclusive.

Additionally, if @flags includes VIR_DUMP_BYPASS_CACHE, then libvirt will attempt to bypass the file system cache while creating the file, or fail if it cannot do so for the given system; this can allow less pressure on file system cache, but also risks slowing saves to NFS.

domain
  a domain object
to
  path for the core file
dumpformat
  format of domain memory's dump
flags
  bitwise-OR of virDomainCoreDumpFlags
Returns
  0 in case of success and -1 in case of failure.

### `virDomainCreate`

    int	virDomainCreate			(virDomainPtr domain)

Launch a defined domain. If the call succeeds the domain moves from the defined to the running domains pools. The domain will be paused only if restoring from managed state created from a paused domain. For more control, see virDomainCreateWithFlags().

domain
  pointer to a defined domain
Returns
  0 in case of success, -1 in case of error

### `virDomainCreateLinux`

    virDomainPtr	virDomainCreateLinux	(virConnectPtr conn,
    					 const char * xmlDesc,
    					 unsigned int flags)

Deprecated after 0.4.6. Renamed to virDomainCreateXML() providing identical functionality. This existing name will left indefinitely for API compatibility.

conn
  pointer to the hypervisor connection
xmlDesc
  string containing an XML description of the domain
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  a new domain object or NULL in case of failure

### `virDomainCreateWithFiles`

    int	virDomainCreateWithFiles	(virDomainPtr domain,
    					 unsigned int nfiles,
    					 int * files,
    					 unsigned int flags)

Launch a defined domain. If the call succeeds the domain moves from the defined to the running domains pools.

@files provides an array of file descriptors which will be made available to the 'init' process of the guest. The file handles exposed to the guest will be renumbered to start from 3 (ie immediately following stderr). This is only supported for guests which use container based virtualization technology.

If the VIR_DOMAIN_START_PAUSED flag is set, or if the guest domain has a managed save image that requested paused state (see virDomainManagedSave()) the guest domain will be started, but its CPUs will remain paused. The CPUs can later be manually started using virDomainResume(). In all other cases, the guest domain will be running.

If the VIR_DOMAIN_START_AUTODESTROY flag is set, the guest domain will be automatically destroyed when the virConnectPtr object is finally released. This will also happen if the client application crashes / loses its connection to the libvirtd daemon. Any domains marked for auto destroy will block attempts at migration, save-to-file, or snapshots.

If the VIR_DOMAIN_START_BYPASS_CACHE flag is set, and there is a managed save file for this domain (created by virDomainManagedSave()), then libvirt will attempt to bypass the file system cache while restoring the file, or fail if it cannot do so for the given system; this can allow less pressure on file system cache, but also risks slowing loads from NFS.

If the VIR_DOMAIN_START_FORCE_BOOT flag is set, then any managed save file for this domain is discarded, and the domain boots from scratch.

domain
  pointer to a defined domain
nfiles
  number of file descriptors passed
files
  list of file descriptors passed
flags
  bitwise-OR of supported virDomainCreateFlags
Returns
  0 in case of success, -1 in case of error

### `virDomainCreateWithFlags`

    int	virDomainCreateWithFlags	(virDomainPtr domain,
    					 unsigned int flags)

Launch a defined domain. If the call succeeds the domain moves from the defined to the running domains pools.

If the VIR_DOMAIN_START_PAUSED flag is set, or if the guest domain has a managed save image that requested paused state (see virDomainManagedSave()) the guest domain will be started, but its CPUs will remain paused. The CPUs can later be manually started using virDomainResume(). In all other cases, the guest domain will be running.

If the VIR_DOMAIN_START_AUTODESTROY flag is set, the guest domain will be automatically destroyed when the virConnectPtr object is finally released. This will also happen if the client application crashes / loses its connection to the libvirtd daemon. Any domains marked for auto destroy will block attempts at migration, save-to-file, or snapshots.

If the VIR_DOMAIN_START_BYPASS_CACHE flag is set, and there is a managed save file for this domain (created by virDomainManagedSave()), then libvirt will attempt to bypass the file system cache while restoring the file, or fail if it cannot do so for the given system; this can allow less pressure on file system cache, but also risks slowing loads from NFS.

If the VIR_DOMAIN_START_FORCE_BOOT flag is set, then any managed save file for this domain is discarded, and the domain boots from scratch.

domain
  pointer to a defined domain
flags
  bitwise-OR of supported virDomainCreateFlags
Returns
  0 in case of success, -1 in case of error

### `virDomainCreateXML`

    virDomainPtr	virDomainCreateXML	(virConnectPtr conn,
    					 const char * xmlDesc,
    					 unsigned int flags)

Launch a new guest domain, based on an XML description similar to the one returned by virDomainGetXMLDesc() This function may require privileged access to the hypervisor. The domain is not persistent, so its definition will disappear when it is destroyed, or if the host is restarted (see virDomainDefineXML() to define persistent domains).

If the VIR_DOMAIN_START_PAUSED flag is set, the guest domain will be started, but its CPUs will remain paused. The CPUs can later be manually started using virDomainResume.

If the VIR_DOMAIN_START_AUTODESTROY flag is set, the guest domain will be automatically destroyed when the virConnectPtr object is finally released. This will also happen if the client application crashes / loses its connection to the libvirtd daemon. Any domains marked for auto destroy will block attempts at migration, save-to-file, or snapshots.

virDomainFree should be used to free the resources after the domain object is no longer needed.

conn
  pointer to the hypervisor connection
xmlDesc
  string containing an XML description of the domain
flags
  bitwise-OR of supported virDomainCreateFlags
Returns
  a new domain object or NULL in case of failure

### `virDomainCreateXMLWithFiles`

    virDomainPtr	virDomainCreateXMLWithFiles	(virConnectPtr conn,
    						 const char * xmlDesc,
    						 unsigned int nfiles,
    						 int * files,
    						 unsigned int flags)

Launch a new guest domain, based on an XML description similar to the one returned by virDomainGetXMLDesc() This function may require privileged access to the hypervisor. The domain is not persistent, so its definition will disappear when it is destroyed, or if the host is restarted (see virDomainDefineXML() to define persistent domains).

@files provides an array of file descriptors which will be made available to the 'init' process of the guest. The file handles exposed to the guest will be renumbered to start from 3 (ie immediately following stderr). This is only supported for guests which use container based virtualization technology.

If the VIR_DOMAIN_START_PAUSED flag is set, the guest domain will be started, but its CPUs will remain paused. The CPUs can later be manually started using virDomainResume.

If the VIR_DOMAIN_START_AUTODESTROY flag is set, the guest domain will be automatically destroyed when the virConnectPtr object is finally released. This will also happen if the client application crashes / loses its connection to the libvirtd daemon. Any domains marked for auto destroy will block attempts at migration, save-to-file, or snapshots.

virDomainFree should be used to free the resources after the domain object is no longer needed.

conn
  pointer to the hypervisor connection
xmlDesc
  string containing an XML description of the domain
nfiles
  number of file descriptors passed
files
  list of file descriptors passed
flags
  bitwise-OR of supported virDomainCreateFlags
Returns
  a new domain object or NULL in case of failure

### `virDomainDefineXML`

    virDomainPtr	virDomainDefineXML	(virConnectPtr conn,
    					 const char * xml)

Define a domain, but does not start it. This definition is persistent, until explicitly undefined with virDomainUndefine(). A previous definition for this domain would be overridden if it already exists.

Some hypervisors may prevent this operation if there is a current block copy operation on a transient domain with the same id as the domain being defined; in that case, use virDomainBlockJobAbort() to stop the block copy first.

virDomainFree should be used to free the resources after the domain object is no longer needed.

conn
  pointer to the hypervisor connection
xml
  the XML description for the domain, preferably in UTF-8
Returns
  NULL in case of error, a pointer to the domain otherwise

### `virDomainDestroy`

    int	virDomainDestroy		(virDomainPtr domain)

Destroy the domain object. The running instance is shutdown if not down already and all resources used by it are given back to the hypervisor. This does not free the associated virDomainPtr object. This function may require privileged access.

virDomainDestroy first requests that a guest terminate (e.g. SIGTERM), then waits for it to comply. After a reasonable timeout, if the guest still exists, virDomainDestroy will forcefully terminate the guest (e.g. SIGKILL) if necessary (which may produce undesirable results, for example unflushed disk cache in the guest). To avoid this possibility, it's recommended to instead call virDomainDestroyFlags, sending the VIR_DOMAIN_DESTROY_GRACEFUL flag.

If the domain is transient and has any snapshot metadata (see virDomainSnapshotNum()), then that metadata will automatically be deleted when the domain quits.

domain
  a domain object
Returns
  0 in case of success and -1 in case of failure.

### `virDomainDestroyFlags`

    int	virDomainDestroyFlags		(virDomainPtr domain,
    					 unsigned int flags)

Destroy the domain object. The running instance is shutdown if not down already and all resources used by it are given back to the hypervisor. This does not free the associated virDomainPtr object. This function may require privileged access.

Calling this function with no @flags set (equal to zero) is equivalent to calling virDomainDestroy, and after a reasonable timeout will forcefully terminate the guest (e.g. SIGKILL) if necessary (which may produce undesirable results, for example unflushed disk cache in the guest). Including VIR_DOMAIN_DESTROY_GRACEFUL in the flags will prevent the forceful termination of the guest, and virDomainDestroyFlags will instead return an error if the guest doesn't terminate by the end of the timeout; at that time, the management application can decide if calling again without VIR_DOMAIN_DESTROY_GRACEFUL is appropriate.

Another alternative which may produce cleaner results for the guest's disks is to use virDomainShutdown() instead, but that depends on guest support (some hypervisor/guest combinations may ignore the shutdown request).

domain
  a domain object
flags
  bitwise-OR of virDomainDestroyFlagsValues
Returns
  0 in case of success and -1 in case of failure.

### `virDomainDetachDevice`

    int	virDomainDetachDevice		(virDomainPtr domain,
    					 const char * xml)

Destroy a virtual device attachment to backend. This function, having hot-unplug semantics, is only allowed on an active domain.

Be aware that hotplug changes might not persist across a domain going into S4 state (also known as hibernation) unless you also modify the persistent domain definition.

domain
  pointer to domain object
xml
  pointer to XML description of one device
Returns
  0 in case of success, -1 in case of failure.

### `virDomainDetachDeviceFlags`

    int	virDomainDetachDeviceFlags	(virDomainPtr domain,
    					 const char * xml,
    					 unsigned int flags)

Detach a virtual device from a domain, using the flags parameter to control how the device is detached. VIR_DOMAIN_AFFECT_CURRENT specifies that the device allocation is removed based on current domain state. VIR_DOMAIN_AFFECT_LIVE specifies that the device shall be deallocated from the active domain instance only and is not from the persisted domain configuration. VIR_DOMAIN_AFFECT_CONFIG specifies that the device shall be deallocated from the persisted domain configuration only. Note that the target hypervisor must return an error if unable to satisfy flags. E.g. the hypervisor driver will return failure if LIVE is specified but it only supports removing the persisted device allocation.

Some hypervisors may prevent this operation if there is a current block copy operation on the device being detached; in that case, use virDomainBlockJobAbort() to stop the block copy first.

Beware that depending on the hypervisor and device type, detaching a device from a running domain may be asynchronous. That is, calling virDomainDetachDeviceFlags may just request device removal while the device is actually removed later (in cooperation with a guest OS). Previously, this fact was ignored and the device could have been removed from domain configuration before it was actually removed by the hypervisor causing various failures on subsequent operations. To check whether the device was successfully removed, either recheck domain configuration using virDomainGetXMLDesc() or add handler for VIR_DOMAIN_EVENT_ID_DEVICE_REMOVED event. In case the device is already gone when virDomainDetachDeviceFlags returns, the event is delivered before this API call ends. To help existing clients work better in most cases, this API will try to transform an asynchronous device removal that finishes shortly after the request into a synchronous removal. In other words, this API may wait a bit for the removal to complete in case it was not synchronous.

Be aware that hotplug changes might not persist across a domain going into S4 state (also known as hibernation) unless you also modify the persistent domain definition.

domain
  pointer to domain object
xml
  pointer to XML description of one device
flags
  bitwise-OR of virDomainDeviceModifyFlags
Returns
  0 in case of success, -1 in case of failure.

### `virDomainFSFreeze`

    int	virDomainFSFreeze		(virDomainPtr dom,
    					 const char ** mountpoints,
    					 unsigned int nmountpoints,
    					 unsigned int flags)

Freeze specified filesystems within the guest (hence guest agent may be required depending on hypervisor used). If @mountpoints is NULL and @nmountpoints is 0, every mounted filesystem on the guest is frozen. In some environments (e.g. QEMU guest with guest agent which doesn't support mountpoints argument), @mountpoints may need to be NULL.

dom
  a domain object
mountpoints
  list of mount points to be frozen
nmountpoints
  the number of mount points specified in @mountpoints
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  the number of frozen filesystems on success, -1 otherwise.

### `virDomainFSThaw`

    int	virDomainFSThaw			(virDomainPtr dom,
    					 const char ** mountpoints,
    					 unsigned int nmountpoints,
    					 unsigned int flags)

Thaw specified filesystems within the guest. If @mountpoints is NULL and @nmountpoints is 0, every mounted filesystem on the guest is thawed. In some drivers (e.g. QEMU driver), @mountpoints may need to be NULL.

dom
  a domain object
mountpoints
  list of mount points to be thawed
nmountpoints
  the number of mount points specified in @mountpoints
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  the number of thawed filesystems on success, -1 otherwise.

### `virDomainFSTrim`

    int	virDomainFSTrim			(virDomainPtr dom,
    					 const char * mountPoint,
    					 unsigned long long minimum,
    					 unsigned int flags)

Calls FITRIM within the guest (hence guest agent may be required depending on hypervisor used). Either call it on each mounted filesystem (@mountPoint is NULL) or just on specified @mountPoint. @minimum hints that free ranges smaller than this may be ignored (this is a hint and the guest may not respect it). By increasing this value, the fstrim operation will complete more quickly for filesystems with badly fragmented free space, although not all blocks will be discarded. If @minimum is not zero, the command may fail.

dom
  a domain object
mountPoint
  which mount point to trim
minimum
  Minimum contiguous free range to discard in bytes
flags
  extra flags, not used yet, so callers should always pass 0
Returns
  0 on success, -1 otherwise.

### `virDomainFree`

    int	virDomainFree			(virDomainPtr domain)

Free the domain object. The running instance is kept alive. The data structure is freed and should not be used thereafter.

domain
  a domain object
Returns
  0 in case of success and -1 in case of failure.

### `virDomainGetAutostart`

    int	virDomainGetAutostart		(virDomainPtr domain,
    					 int * autostart)

Provides a boolean value indicating whether the domain configured to be automatically started when the host machine boots.

domain
  a domain object
autostart
  the value returned
Returns
  -1 in case of error, 0 in case of success

### `virDomainGetBlkioParameters`

    int	virDomainGetBlkioParameters	(virDomainPtr domain,
    					 virTypedParameterPtr params,
    					 int * nparams,
    					 unsigned int flags)

Get all blkio parameters. On input, @nparams gives the size of the @params array; on output, @nparams gives how many slots were filled with parameter information, which might be less but will not exceed the input value.

As a special case, calling with @params as NULL and @nparams as 0 on input will cause @nparams on output to contain the number of parameters supported by the hypervisor. The caller should then allocate @params array, i.e. (sizeof(@virTypedParameter) * @nparams) bytes and call the API again.

See virDomainGetMemoryParameters() for an equivalent usage example.

This function may require privileged access to the hypervisor. This function expects the caller to allocate the @params.

domain
  pointer to domain object
params
  pointer to blkio parameter object (return value, allocated by the caller)
nparams
  pointer to number of blkio parameters; input and output
flags
  bitwise-OR of virDomainModificationImpact and virTypedParameterFlags
Returns
  -1 in case of error, 0 in case of success.

### `virDomainGetBlockInfo`

    int	virDomainGetBlockInfo		(virDomainPtr domain,
    					 const char * disk,
    					 virDomainBlockInfoPtr info,
    					 unsigned int flags)

Extract information about a domain's block device.

The @disk parameter is either an unambiguous source name of the block device (the <source file='...'/> sub-element, such as "/path/to/image"), or (since 0.9.5) the device target shorthand (the <target dev='...'/> sub-element, such as "vda"). Valid names can be found by calling virDomainGetXMLDesc() and inspecting elements within //domain/devices/disk.

For QEMU domains, the allocation and physical virDomainBlockInfo values returned will generally be the same, except when using a non raw, block backing device, such as qcow2 for an active domain. When the persistent domain is not active, QEMU will return the default which is the same value for allocation and physical.

Active QEMU domains can return an allocation value which is more representative of the currently used blocks by the device compared to the physical size of the device. Applications can use/monitor the allocation value with the understanding that if the domain becomes inactive during an attempt to get the value, the default values will be returned. Thus, the application should check after the call for the domain being inactive if the values are the same. Optionally, the application could be watching for a shutdown event and then ignore any values received afterwards. This can be an issue when a domain is being migrated and the exact timing of the domain being made inactive and check of the allocation value results the default being returned. For a transient domain in the similar situation, this call will return -1 and an error message indicating the "domain is not running".

The following is some pseudo code illustrating the call sequence:

    ...
    virDomainPtr dom;
    virDomainBlockInfo info;
    char *device;
    ...
    // Either get a list of all domains or a specific domain
    // via a virDomainLookupBy*() call.
    //
    // It's also required to fill in the device pointer, but that's
    // specific to the implementation. For the purposes of this example
    // a qcow2 backed device name string would need to be provided.
    ...
    // If the following call is made on a persistent domain with a
    // qcow2 block backed block device, then it's possible the returned
    // allocation equals the physical value. In that case, the domain
    // that may have been active prior to calling has become inactive,
    // such as is the case during a domain migration. Thus once we
    // get data returned, check for active domain when the values are
    // the same.
    if (virDomainGetBlockInfo(dom, device, &info, 0) < 0)
        goto failure;
    if (info.allocation == info.physical) {
        // If the domain is no longer active,
        // then the defaults are being returned.
        if (!virDomainIsActive())
                goto ignore_return;
    }
    // Do something with the allocation and physical values
    ...

domain
  a domain object
disk
  path to the block device, or device shorthand
info
  pointer to a virDomainBlockInfo structure allocated by the user
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  0 in case of success and -1 in case of failure.

### `virDomainGetBlockIoTune`

    int	virDomainGetBlockIoTune		(virDomainPtr dom,
    					 const char * disk,
    					 virTypedParameterPtr params,
    					 int * nparams,
    					 unsigned int flags)

Get all block IO tunable parameters for a given device. On input, @nparams gives the size of the @params array; on output, @nparams gives how many slots were filled with parameter information, which might be less but will not exceed the input value.

As a special case, calling with @params as NULL and @nparams as 0 on input will cause @nparams on output to contain the number of parameters supported by the hypervisor, either for the given @disk (note that block devices of different types might support different parameters), or if @disk is NULL, for all possible disks. The caller should then allocate @params array, i.e. (sizeof(@virTypedParameter) * @nparams) bytes and call the API again. See virDomainGetMemoryParameters() for more details.

The @disk parameter is either an unambiguous source name of the block device (the <source file='...'/> sub-element, such as "/path/to/image"), or the device target shorthand (the <target dev='...'/> sub-element, such as "xvda"). Valid names can be found by calling virDomainGetXMLDesc() and inspecting elements within //domain/devices/disk. This parameter cannot be NULL unless @nparams is 0 on input.

dom
  pointer to domain object
disk
  path to the block device, or device shorthand
params
  Pointer to blkio parameter object (return value, allocated by the caller)
nparams
  Pointer to number of blkio parameters
flags
  bitwise-OR of virDomainModificationImpact and virTypedParameterFlags
Returns
  -1 in case of error, 0 in case of success.

### `virDomainGetBlockJobInfo`

    int	virDomainGetBlockJobInfo	(virDomainPtr dom,
    					 const char * disk,
    					 virDomainBlockJobInfoPtr info,
    					 unsigned int flags)

Request block job information for the given disk. If an operation is active @info will be updated with the current progress. The units used for the bandwidth field of @info depends on @flags. If @flags includes VIR_DOMAIN_BLOCK_JOB_INFO_BANDWIDTH_BYTES, bandwidth is in bytes/second (although this mode can risk failure due to overflow, depending on both client and server word size); otherwise, the value is rounded up to MiB/s.

The @disk parameter is either an unambiguous source name of the block device (the <source file='...'/> sub-element, such as "/path/to/image"), or (since 0.9.5) the device target shorthand (the <target dev='...'/> sub-element, such as "vda"). Valid names can be found by calling virDomainGetXMLDesc() and inspecting elements within //domain/devices/disk.

dom
  pointer to domain object
disk
  path to the block device, or device shorthand
info
  pointer to a virDomainBlockJobInfo structure
flags
  bitwise-OR of virDomainBlockJobInfoFlags
Returns
  -1 in case of failure, 0 when nothing found, 1 when info was found.

### `virDomainGetCPUStats`

    int	virDomainGetCPUStats		(virDomainPtr domain,
    					 virTypedParameterPtr params,
    					 unsigned int nparams,
    					 int start_cpu,
    					 unsigned int ncpus,
    					 unsigned int flags)

Get statistics relating to CPU usage attributable to a single domain (in contrast to the statistics returned by virNodeGetCPUStats() for all processes on the host). @dom must be running (an inactive domain has no attributable cpu usage). On input, @params must contain at least @nparams * @ncpus entries, allocated by the caller.

If @start_cpu is -1, then @ncpus must be 1, and the returned results reflect the statistics attributable to the entire domain (such as user and system time for the process as a whole). Otherwise, @start_cpu represents which cpu to start with, and @ncpus represents how many consecutive processors to query, with statistics attributable per processor (such as per-cpu usage). If @ncpus is larger than the number of cpus available to query, then the trailing part of the array will be unpopulated.

The remote driver imposes a limit of 128 @ncpus and 16 @nparams; the number of parameters per cpu should not exceed 16, but if you have a host with more than 128 CPUs, your program should split the request into multiple calls.

As special cases, if @params is NULL and @nparams is 0 and @ncpus is 1, and the return value will be how many statistics are available for the given @start_cpu. This number may be different for @start_cpu of -1 than for any non-negative value, but will be the same for all non-negative @start_cpu. Likewise, if @params is NULL and @nparams is 0 and @ncpus is 0, the number of cpus available to query is returned. From the host perspective, this would typically match the cpus member of virNodeGetInfo(), but might be less due to host cpu hotplug.

For now, @flags is unused, and the statistics all relate to the usage from the host perspective. It is possible that a future version will support a flag that queries the cpu usage from the guest's perspective, where the maximum cpu to query would be related to virDomainGetVcpusFlags() rather than virNodeGetInfo(). An individual guest vcpu cannot be reliably mapped back to a specific host cpu unless a single-processor vcpu pinning was used, but when @start_cpu is -1, any difference in usage between a host and guest perspective would serve as a measure of hypervisor overhead.

Typical use sequence is below.

getting total stats: set start_cpu as -1, ncpus 1 virDomainGetCPUStats(dom, NULL, 0, -1, 1, 0) => nparams params = calloc(nparams, sizeof(virTypedParameter)) virDomainGetCPUStats(dom, params, nparams, -1, 1, 0) => total stats.

getting per-cpu stats: virDomainGetCPUStats(dom, NULL, 0, 0, 0, 0) => ncpus virDomainGetCPUStats(dom, NULL, 0, 0, 1, 0) => nparams params = calloc(ncpus * nparams, sizeof(virTypedParameter)) virDomainGetCPUStats(dom, params, nparams, 0, ncpus, 0) => per-cpu stats

domain
  domain to query
params
  array to populate on output
nparams
  number of parameters per cpu
start_cpu
  which cpu to start with, or -1 for summary
ncpus
  how many cpus to query
flags
  bitwise-OR of virTypedParameterFlags
Returns
  -1 on failure, or the number of statistics that were populated per cpu on success (this will be less than the total number of populated @params, unless @ncpus was 1; and may be less than @nparams). The populated parameters start at each stride of @nparams, which means the results may be discontiguous; any unpopulated parameters will be zeroed on success (this includes skipped elements if @nparams is too large, and tail elements if @ncpus is too large). The caller is responsible for freeing any returned string parameters.

### `virDomainGetConnect`

    virConnectPtr	virDomainGetConnect	(virDomainPtr dom)

Provides the connection pointer associated with a domain. The reference counter on the connection is not increased by this call.

WARNING: When writing libvirt bindings in other languages, do not use this function. Instead, store the connection and the domain object together.

dom
  pointer to a domain
Returns
  the virConnectPtr or NULL in case of failure.

### `virDomainGetControlInfo`

    int	virDomainGetControlInfo		(virDomainPtr domain,
    					 virDomainControlInfoPtr info,
    					 unsigned int flags)

Extract details about current state of control interface to a domain.

domain
  a domain object
info
  pointer to a virDomainControlInfo structure allocated by the user
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  0 in case of success and -1 in case of failure.

### `virDomainGetDiskErrors`

    int	virDomainGetDiskErrors		(virDomainPtr dom,
    					 virDomainDiskErrorPtr errors,
    					 unsigned int maxerrors,
    					 unsigned int flags)

The function populates @errors array with all disks that encountered an I/O error. Disks with no error will not be returned in the @errors array. Each disk is identified by its target (the dev attribute of target subelement in domain XML), such as "vda", and accompanied with the error that was seen on it. The caller is also responsible for calling free() on each disk name returned.

In a special case when @errors is NULL and @maxerrors is 0, the function returns preferred size of @errors that the caller should use to get all disk errors.

Since calling virDomainGetDiskErrors(dom, NULL, 0, 0) to get preferred size of @errors array and getting the errors are two separate operations, new disks may be hotplugged to the domain and new errors may be encountered between the two calls. Thus, this function may not return all disk errors because the supplied array is not large enough. Such errors may, however, be detected by listening to domain events.

dom
  a domain object
errors
  array to populate on output
maxerrors
  size of @errors array
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  number of disks with errors filled in the @errors array or -1 on error.

### `virDomainGetEmulatorPinInfo`

    int	virDomainGetEmulatorPinInfo	(virDomainPtr domain,
    					 unsigned char * cpumap,
    					 int maplen,
    					 unsigned int flags)

Query the CPU affinity setting of all emulator threads of domain, store it in cpumap.

domain
  pointer to domain object, or NULL for Domain0
cpumap
  pointer to a bit map of real CPUs for all emulator threads of this domain (in 8-bit bytes) (OUT) There is only one cpumap for all emulator threads. Must not be NULL.
maplen
  the number of bytes in one cpumap, from 1 up to size of CPU map. Must be positive.
flags
  bitwise-OR of virDomainModificationImpact Must not be VIR_DOMAIN_AFFECT_LIVE and VIR_DOMAIN_AFFECT_CONFIG concurrently.
Returns
  1 in case of success, 0 in case of no emulator threads are pined to pcpus, -1 in case of failure.

### `virDomainGetHostname`

    char *	virDomainGetHostname		(virDomainPtr domain,
    					 unsigned int flags)

Get the hostname for that domain.

Dependent on hypervisor used, this may require a guest agent to be available.

domain
  a domain object
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  the hostname which must be freed by the caller, or NULL if there was an error.

### `virDomainGetID`

    unsigned int	virDomainGetID		(virDomainPtr domain)

Get the hypervisor ID number for the domain

domain
  a domain object
Returns
  the domain ID number or (unsigned int) -1 in case of error

### `virDomainGetInfo`

    int	virDomainGetInfo		(virDomainPtr domain,
    					 virDomainInfoPtr info)

Extract information about a domain. Note that if the connection used to get the domain is limited only a partial set of the information can be extracted.

domain
  a domain object
info
  pointer to a virDomainInfo structure allocated by the user
Returns
  0 in case of success and -1 in case of failure.

### `virDomainGetInterfaceParameters`

    int	virDomainGetInterfaceParameters	(virDomainPtr domain,
    					 const char * device,
    					 virTypedParameterPtr params,
    					 int * nparams,
    					 unsigned int flags)

Get all interface parameters. On input, @nparams gives the size of the @params array; on output, @nparams gives how many slots were filled with parameter information, which might be less but will not exceed the input value.

As a special case, calling with @params as NULL and @nparams as 0 on input will cause @nparams on output to contain the number of parameters supported by the hypervisor. The caller should then allocate @params array, i.e. (sizeof(@virTypedParameter) * @nparams) bytes and call the API again. See virDomainGetMemoryParameters() for an equivalent usage example.

This function may require privileged access to the hypervisor. This function expects the caller to allocate the @params.

domain
  pointer to domain object
device
  the interface name or mac address
params
  pointer to interface parameter objects (return value, allocated by the caller)
nparams
  pointer to number of interface parameter; input and output
flags
  bitwise-OR of virDomainModificationImpact and virTypedParameterFlags
Returns
  -1 in case of error, 0 in case of success.

### `virDomainGetJobInfo`

    int	virDomainGetJobInfo		(virDomainPtr domain,
    					 virDomainJobInfoPtr info)

Extract information about progress of a background job on a domain. Will return an error if the domain is not active.

This function returns a limited amount of information in comparison to virDomainGetJobStats().

domain
  a domain object
info
  pointer to a virDomainJobInfo structure allocated by the user
Returns
  0 in case of success and -1 in case of failure.

### `virDomainGetJobStats`

    int	virDomainGetJobStats		(virDomainPtr domain,
    					 int * type,
    					 virTypedParameterPtr * params,
    					 int * nparams,
    					 unsigned int flags)

Extract information about progress of a background job on a domain. Will return an error if the domain is not active. The function returns a superset of progress information provided by virDomainGetJobInfo. Possible fields returned in @params are defined by VIR_DOMAIN_JOB_* macros and new fields will likely be introduced in the future so callers may receive fields that they do not understand in case they talk to a newer server.

When @flags contains VIR_DOMAIN_JOB_STATS_COMPLETED, the function will return statistics about a recently completed job. Specifically, this flag may be used to query statistics of a completed incoming migration. Statistics of a completed job are automatically destroyed once read or when libvirtd is restarted. Note that time information returned for completed migrations may be completely irrelevant unless both source and destination hosts have synchronized time (i.e., NTP daemon is running on both of them).

domain
  a domain object
type
  where to store the job type (one of virDomainJobType)
params
  where to store job statistics
nparams
  number of items in @params
flags
  bitwise-OR of virDomainGetJobStatsFlags
Returns
  0 in case of success and -1 in case of failure.

### `virDomainGetMaxMemory`

    unsigned long	virDomainGetMaxMemory	(virDomainPtr domain)

Retrieve the maximum amount of physical memory allocated to a domain. If domain is NULL, then this get the amount of memory reserved to Domain0 i.e. the domain where the application runs.

domain
  a domain object or NULL
Returns
  the memory size in kibibytes (blocks of 1024 bytes), or 0 in case of error.

### `virDomainGetMaxVcpus`

    int	virDomainGetMaxVcpus		(virDomainPtr domain)

Provides the maximum number of virtual CPUs supported for the guest VM. If the guest is inactive, this is basically the same as virConnectGetMaxVcpus(). If the guest is running this will reflect the maximum number of virtual CPUs the guest was booted with. For more details, see virDomainGetVcpusFlags().

domain
  pointer to domain object
Returns
  the maximum of virtual CPU or -1 in case of error.

### `virDomainGetMemoryParameters`

    int	virDomainGetMemoryParameters	(virDomainPtr domain,
    					 virTypedParameterPtr params,
    					 int * nparams,
    					 unsigned int flags)

Get all memory parameters. On input, @nparams gives the size of the @params array; on output, @nparams gives how many slots were filled with parameter information, which might be less but will not exceed the input value.

As a special case, calling with @params as NULL and @nparams as 0 on input will cause @nparams on output to contain the number of parameters supported by the hypervisor. The caller should then allocate @params array, i.e. (sizeof(@virTypedParameter) * @nparams) bytes and call the API again.

Here is a sample code snippet:

    if (virDomainGetMemoryParameters(dom, NULL, &nparams, 0) == 0 &&
        nparams != 0) {
        if ((params = malloc(sizeof(*params) * nparams)) == NULL)
            goto error;
        memset(params, 0, sizeof(*params) * nparams);
        if (virDomainGetMemoryParameters(dom, params, &nparams, 0))
            goto error;
    }

This function may require privileged access to the hypervisor. This function expects the caller to allocate the @params.

domain
  pointer to domain object
params
  pointer to memory parameter object (return value, allocated by the caller)
nparams
  pointer to number of memory parameters; input and output
flags
  bitwise-OR of virDomainModificationImpact and virTypedParameterFlags
Returns
  -1 in case of error, 0 in case of success.

### `virDomainGetMetadata`

    char *	virDomainGetMetadata		(virDomainPtr domain,
    					 int type,
    					 const char * uri,
    					 unsigned int flags)

Retrieves the appropriate domain element given by @type. If VIR_DOMAIN_METADATA_ELEMENT is requested parameter @uri must be set to the name of the namespace the requested elements belong to, otherwise must be NULL.

If an element of the domain XML is not present, the resulting error will be VIR_ERR_NO_DOMAIN_METADATA. This method forms a shortcut for seeing information from virDomainSetMetadata() without having to go through virDomainGetXMLDesc().

@flags controls whether the live domain or persistent configuration will be queried.

domain
  a domain object
type
  type of metadata, from virDomainMetadataType
uri
  XML namespace identifier
flags
  bitwise-OR of virDomainModificationImpact
Returns
  the metadata string on success (caller must free), or NULL in case of failure.

### `virDomainGetName`

    const char *	virDomainGetName	(virDomainPtr domain)

Get the public name for that domain

domain
  a domain object
Returns
  a pointer to the name or NULL, the string need not be deallocated its lifetime will be the same as the domain object.

### `virDomainGetNumaParameters`

    int	virDomainGetNumaParameters	(virDomainPtr domain,
    					 virTypedParameterPtr params,
    					 int * nparams,
    					 unsigned int flags)

Get all numa parameters. On input, @nparams gives the size of the @params array; on output, @nparams gives how many slots were filled with parameter information, which might be less but will not exceed the input value.

As a special case, calling with @params as NULL and @nparams as 0 on input will cause @nparams on output to contain the number of parameters supported by the hypervisor. The caller should then allocate @params array, i.e. (sizeof(@virTypedParameter) * @nparams) bytes and call the API again.

See virDomainGetMemoryParameters() for an equivalent usage example.

This function may require privileged access to the hypervisor. This function expects the caller to allocate the @params.

domain
  pointer to domain object
params
  pointer to numa parameter object (return value, allocated by the caller)
nparams
  pointer to number of numa parameters
flags
  bitwise-OR of virDomainModificationImpact and virTypedParameterFlags
Returns
  -1 in case of error, 0 in case of success.

### `virDomainGetOSType`

    char *	virDomainGetOSType		(virDomainPtr domain)

Get the type of domain operation system.

domain
  a domain object
Returns
  the new string or NULL in case of error, the string must be freed by the caller.

### `virDomainGetSchedulerParameters`

    int	virDomainGetSchedulerParameters	(virDomainPtr domain,
    					 virTypedParameterPtr params,
    					 int * nparams)

Get all scheduler parameters. On input, @nparams gives the size of the @params array; on output, @nparams gives how many slots were filled with parameter information, which might be less but will not exceed the input value. @nparams cannot be 0.

It is hypervisor specific whether this returns the live or persistent state; for more control, use virDomainGetSchedulerParametersFlags().

domain
  pointer to domain object
params
  pointer to scheduler parameter objects (return value)
nparams
  pointer to number of scheduler parameter objects (this value should generally be as large as the returned value nparams of virDomainGetSchedulerType()); input and output
Returns
  -1 in case of error, 0 in case of success.

### `virDomainGetSchedulerParametersFlags`

    int	virDomainGetSchedulerParametersFlags	(virDomainPtr domain,
    						 virTypedParameterPtr params,
    						 int * nparams,
    						 unsigned int flags)

Get all scheduler parameters. On input, @nparams gives the size of the @params array; on output, @nparams gives how many slots were filled with parameter information, which might be less but will not exceed the input value. @nparams cannot be 0.

The value of @flags can be exactly VIR_DOMAIN_AFFECT_CURRENT, VIR_DOMAIN_AFFECT_LIVE, or VIR_DOMAIN_AFFECT_CONFIG.

Here is a sample code snippet:

    char *ret = virDomainGetSchedulerType(dom, &nparams);
    if (ret && nparams != 0) {
        if ((params = malloc(sizeof(*params) * nparams)) == NULL)
            goto error;
        memset(params, 0, sizeof(*params) * nparams);
        if (virDomainGetSchedulerParametersFlags(dom, params, &nparams, 0))
            goto error;
    }

domain
  pointer to domain object
params
  pointer to scheduler parameter object (return value)
nparams
  pointer to number of scheduler parameter (this value should be same than the returned value nparams of virDomainGetSchedulerType()); input and output
flags
  bitwise-OR of virDomainModificationImpact and virTypedParameterFlags
Returns
  -1 in case of error, 0 in case of success.

### `virDomainGetSchedulerType`

    char *	virDomainGetSchedulerType	(virDomainPtr domain,
    					 int * nparams)

Get the scheduler type and the number of scheduler parameters.

domain
  pointer to domain object
nparams
  pointer to number of scheduler parameters, can be NULL (return value)
Returns
  NULL in case of error. The caller must free the returned string.

### `virDomainGetSecurityLabel`

    int	virDomainGetSecurityLabel	(virDomainPtr domain,
    					 virSecurityLabelPtr seclabel)

Extract security label of an active domain. The 'label' field in the @seclabel argument will be initialized to the empty string if the domain is not running under a security model.

domain
  a domain object
seclabel
  pointer to a virSecurityLabel structure
Returns
  0 in case of success, -1 in case of failure

### `virDomainGetSecurityLabelList`

    int	virDomainGetSecurityLabelList	(virDomainPtr domain,
    					 virSecurityLabelPtr * seclabels)

Extract the security labels of an active domain. The 'label' field in the @seclabels argument will be initialized to the empty string if the domain is not running under a security model.

domain
  a domain object
seclabels
  will be auto-allocated and filled with domains' security labels. Caller must free memory on return.
Returns
  number of elemnets in @seclabels on success, -1 in case of failure.

### `virDomainGetState`

    int	virDomainGetState		(virDomainPtr domain,
    					 int * state,
    					 int * reason,
    					 unsigned int flags)

Extract domain state. Each state can be accompanied with a reason (if known) which led to the state.

domain
  a domain object
state
  returned state of the domain (one of virDomainState)
reason
  returned reason which led to @state (one of virDomain*Reason corresponding to the current state); it is allowed to be NULL
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  0 in case of success and -1 in case of failure.

### `virDomainGetTime`

    int	virDomainGetTime		(virDomainPtr dom,
    					 long long * seconds,
    					 unsigned int * nseconds,
    					 unsigned int flags)

Extract information about guest time and store it into @seconds and @nseconds. The @seconds represents the number of seconds since the UNIX Epoch of 1970-01-01 00:00:00 in UTC.

Please note that some hypervisors may require guest agent to be configured and running in order to run this API.

dom
  a domain object
seconds
  domain's time in seconds
nseconds
  the nanoscond part of @seconds
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  0 on success, -1 otherwise.

### `virDomainGetUUID`

    int	virDomainGetUUID		(virDomainPtr domain,
    					 unsigned char * uuid)

Get the UUID for a domain

domain
  a domain object
uuid
  pointer to a VIR_UUID_BUFLEN bytes array
Returns
  -1 in case of error, 0 in case of success

### `virDomainGetUUIDString`

    int	virDomainGetUUIDString		(virDomainPtr domain,
    					 char * buf)

Get the UUID for a domain as string. For more information about UUID see RFC4122.

domain
  a domain object
buf
  pointer to a VIR_UUID_STRING_BUFLEN bytes array
Returns
  -1 in case of error, 0 in case of success

### `virDomainGetVcpuPinInfo`

    int	virDomainGetVcpuPinInfo		(virDomainPtr domain,
    					 int ncpumaps,
    					 unsigned char * cpumaps,
    					 int maplen,
    					 unsigned int flags)

Query the CPU affinity setting of all virtual CPUs of domain, store it in cpumaps.

domain
  pointer to domain object, or NULL for Domain0
ncpumaps
  the number of cpumap (listed first to match virDomainGetVcpus)
cpumaps
  pointer to a bit map of real CPUs for all vcpus of this domain (in 8-bit bytes) (OUT) It's assumed there is <ncpumaps> cpumap in cpumaps array. The memory allocated to cpumaps must be (ncpumaps * maplen) bytes (ie: calloc(ncpumaps, maplen)). One cpumap inside cpumaps has the format described in virDomainPinVcpu() API. Must not be NULL.
maplen
  the number of bytes in one cpumap, from 1 up to size of CPU map. Must be positive.
flags
  bitwise-OR of virDomainModificationImpact Must not be VIR_DOMAIN_AFFECT_LIVE and VIR_DOMAIN_AFFECT_CONFIG concurrently.
Returns
  the number of virtual CPUs in case of success, -1 in case of failure.

### `virDomainGetVcpus`

    int	virDomainGetVcpus		(virDomainPtr domain,
    					 virVcpuInfoPtr info,
    					 int maxinfo,
    					 unsigned char * cpumaps,
    					 int maplen)

Extract information about virtual CPUs of domain, store it in info array and also in cpumaps if this pointer isn't NULL. This call may fail on an inactive domain.

See also virDomainGetVcpuPinInfo for querying just cpumaps, including on an inactive domain.

domain
  pointer to domain object, or NULL for Domain0
info
  pointer to an array of virVcpuInfo structures (OUT)
maxinfo
  number of structures in info array
cpumaps
  pointer to a bit map of real CPUs for all vcpus of this domain (in 8-bit bytes) (OUT) If cpumaps is NULL, then no cpumap information is returned by the API. It's assumed there is <maxinfo> cpumap in cpumaps array. The memory allocated to cpumaps must be (maxinfo * maplen) bytes (ie: calloc(maxinfo, maplen)). One cpumap inside cpumaps has the format described in virDomainPinVcpu() API.
maplen
  number of bytes in one cpumap, from 1 up to size of CPU map in underlying virtualization system (Xen...). Must be zero when cpumaps is NULL and positive when it is non-NULL.
Returns
  the number of info filled in case of success, -1 in case of failure.

### `virDomainGetVcpusFlags`

    int	virDomainGetVcpusFlags		(virDomainPtr domain,
    					 unsigned int flags)

Query the number of virtual CPUs used by the domain. Note that this call may fail if the underlying virtualization hypervisor does not support it. This function may require privileged access to the hypervisor.

If @flags includes VIR_DOMAIN_AFFECT_LIVE, this will query a running domain (which will fail if domain is not active); if it includes VIR_DOMAIN_AFFECT_CONFIG, this will query the XML description of the domain. It is an error to set both flags. If neither flag is set (that is, VIR_DOMAIN_AFFECT_CURRENT), then the configuration queried depends on whether the domain is currently running.

If @flags includes VIR_DOMAIN_VCPU_MAXIMUM, then the maximum virtual CPU limit is queried. Otherwise, this call queries the current virtual CPU count.

If @flags includes VIR_DOMAIN_VCPU_GUEST, then the state of the processors is queried in the guest instead of the hypervisor. This flag is only usable on live domains. Guest agent may be needed for this flag to be available.

domain
  pointer to domain object, or NULL for Domain0
flags
  bitwise-OR of virDomainVcpuFlags
Returns
  the number of vCPUs in case of success, -1 in case of failure.

### `virDomainGetXMLDesc`

    char *	virDomainGetXMLDesc		(virDomainPtr domain,
    					 unsigned int flags)

Provide an XML description of the domain. The description may be reused later to relaunch the domain with virDomainCreateXML().

No security-sensitive data will be included unless @flags contains VIR_DOMAIN_XML_SECURE; this flag is rejected on read-only connections. If @flags includes VIR_DOMAIN_XML_INACTIVE, then the XML represents the configuration that will be used on the next boot of a persistent domain; otherwise, the configuration represents the currently running domain. If @flags contains VIR_DOMAIN_XML_UPDATE_CPU, then the portion of the domain XML describing CPU capabilities is modified to match actual capabilities of the host.

domain
  a domain object
flags
  bitwise-OR of virDomainXMLFlags
Returns
  a 0 terminated UTF-8 encoded XML instance, or NULL in case of error. the caller must free() the returned value.

### `virDomainHasCurrentSnapshot`

    int	virDomainHasCurrentSnapshot	(virDomainPtr domain,
    					 unsigned int flags)

Determine if the domain has a current snapshot.

domain
  pointer to the domain object
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  1 if such snapshot exists, 0 if it doesn't, -1 on error.

### `virDomainHasManagedSaveImage`

    int	virDomainHasManagedSaveImage	(virDomainPtr dom,
    					 unsigned int flags)

Check if a domain has a managed save image as created by virDomainManagedSave(). Note that any running domain should not have such an image, as it should have been removed on restart.

dom
  pointer to the domain
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  0 if no image is present, 1 if an image is present, and -1 in case of error

### `virDomainInjectNMI`

    int	virDomainInjectNMI		(virDomainPtr domain,
    					 unsigned int flags)

Send NMI to the guest

domain
  pointer to domain object, or NULL for Domain0
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  0 in case of success, -1 in case of failure.

### `virDomainInterfaceStats`

    int	virDomainInterfaceStats		(virDomainPtr dom,
    					 const char * path,
    					 virDomainInterfaceStatsPtr stats,
    					 size_t size)

This function returns network interface stats for interfaces attached to the domain.

The path parameter is the name of the network interface.

Domains may have more than one network interface. To get stats for each you should make multiple calls to this function.

Individual fields within the stats structure may be returned as -1, which indicates that the hypervisor does not support that particular statistic.

dom
  pointer to the domain object
path
  path to the interface
stats
  network interface stats (returned)
size
  size of stats structure
Returns
  0 in case of success or -1 in case of failure.

### `virDomainIsActive`

    int	virDomainIsActive		(virDomainPtr dom)

Determine if the domain is currently running

dom
  pointer to the domain object
Returns
  1 if running, 0 if inactive, -1 on error

### `virDomainIsPersistent`

    int	virDomainIsPersistent		(virDomainPtr dom)

Determine if the domain has a persistent configuration which means it will still exist after shutting down

dom
  pointer to the domain object
Returns
  1 if persistent, 0 if transient, -1 on error

### `virDomainIsUpdated`

    int	virDomainIsUpdated		(virDomainPtr dom)

Determine if the domain has been updated.

dom
  pointer to the domain object
Returns
  1 if updated, 0 if not, -1 on error

### `virDomainListAllSnapshots`

    int	virDomainListAllSnapshots	(virDomainPtr domain,
    					 virDomainSnapshotPtr ** snaps,
    					 unsigned int flags)

Collect the list of domain snapshots for the given domain, and allocate an array to store those objects. This API solves the race inherent in virDomainSnapshotListNames().

By default, this command covers all snapshots; it is also possible to limit things to just snapshots with no parents, when @flags includes VIR_DOMAIN_SNAPSHOT_LIST_ROOTS. Additional filters are provided in groups, where each group contains bits that describe mutually exclusive attributes of a snapshot, and where all bits within a group describe all possible snapshots. Some hypervisors might reject explicit bits from a group where the hypervisor cannot make a distinction. For a group supported by a given hypervisor, the behavior when no bits of a group are set is identical to the behavior when all bits in that group are set. When setting bits from more than one group, it is possible to select an impossible combination, in that case a hypervisor may return either 0 or an error.

The first group of @flags is VIR_DOMAIN_SNAPSHOT_LIST_LEAVES and VIR_DOMAIN_SNAPSHOT_LIST_NO_LEAVES, to filter based on snapshots that have no further children (a leaf snapshot).

The next group of @flags is VIR_DOMAIN_SNAPSHOT_LIST_METADATA and VIR_DOMAIN_SNAPSHOT_LIST_NO_METADATA, for filtering snapshots based on whether they have metadata that would prevent the removal of the last reference to a domain.

The next group of @flags is VIR_DOMAIN_SNAPSHOT_LIST_INACTIVE, VIR_DOMAIN_SNAPSHOT_LIST_ACTIVE, and VIR_DOMAIN_SNAPSHOT_LIST_DISK_ONLY, for filtering snapshots based on what domain state is tracked by the snapshot.

The next group of @flags is VIR_DOMAIN_SNAPSHOT_LIST_INTERNAL and VIR_DOMAIN_SNAPSHOT_LIST_EXTERNAL, for filtering snapshots based on whether the snapshot is stored inside the disk images or as additional files.

domain
  a domain object
snaps
  pointer to variable to store the array containing snapshot objects, or NULL if the list is not required (just returns number of snapshots)
flags
  bitwise-OR of supported virDomainSnapshotListFlags
Returns
  the number of domain snapshots found or -1 and sets @snaps to NULL in case of error. On success, the array stored into @snaps is guaranteed to have an extra allocated element set to NULL but not included in the return count, to make iteration easier. The caller is responsible for calling virDomainSnapshotFree() on each array element, then calling free() on @snaps.

### `virDomainListGetStats`

    int	virDomainListGetStats		(virDomainPtr * doms,
    					 unsigned int stats,
    					 virDomainStatsRecordPtr ** retStats,
    					 unsigned int flags)

Query statistics for domains provided by @doms. Note that all domains in @doms must share the same connection.

Report statistics of various parameters for a running VM according to @stats field. The statistics are returned as an array of structures for each queried domain. The structure contains an array of typed parameters containing the individual statistics. The typed parameter name for each statistic field consists of a dot-separated string containing name of the requested group followed by a group specific description of the statistic value.

The statistic groups are enabled using the @stats parameter which is a binary-OR of enum virDomainStatsTypes. The stats groups are documented in virConnectGetAllDomainStats.

Using 0 for @stats returns all stats groups supported by the given hypervisor.

Specifying VIR_CONNECT_GET_ALL_DOMAINS_STATS_ENFORCE_STATS as @flags makes the function return error in case some of the stat types in @stats were not recognized by the daemon.

Note that any of the domain list filtering flags in @flags will be rejected by this function.

doms
  NULL terminated array of domains
stats
  stats to return, binary-OR of virDomainStatsTypes
retStats
  Pointer that will be filled with the array of returned stats
flags
  extra flags; binary-OR of virConnectGetAllDomainStatsFlags
Returns
  the count of returned statistics structures on success, -1 on error. The requested data are returned in the @retStats parameter. The returned array should be freed by the caller. See virDomainStatsRecordListFree. Note that the count of returned stats may be less than the domain count provided via @doms.

### `virDomainLookupByID`

    virDomainPtr	virDomainLookupByID	(virConnectPtr conn,
    					 int id)

Try to find a domain based on the hypervisor ID number Note that this won't work for inactive domains which have an ID of -1, in that case a lookup based on the Name or UUId need to be done instead.

virDomainFree should be used to free the resources after the domain object is no longer needed.

conn
  pointer to the hypervisor connection
id
  the domain ID number
Returns
  a new domain object or NULL in case of failure. If the domain cannot be found, then VIR_ERR_NO_DOMAIN error is raised.

### `virDomainLookupByName`

    virDomainPtr	virDomainLookupByName	(virConnectPtr conn,
    					 const char * name)

Try to lookup a domain on the given hypervisor based on its name.

virDomainFree should be used to free the resources after the domain object is no longer needed.

conn
  pointer to the hypervisor connection
name
  name for the domain
Returns
  a new domain object or NULL in case of failure. If the domain cannot be found, then VIR_ERR_NO_DOMAIN error is raised.

### `virDomainLookupByUUID`

    virDomainPtr	virDomainLookupByUUID	(virConnectPtr conn,
    					 const unsigned char * uuid)

Try to lookup a domain on the given hypervisor based on its UUID.

virDomainFree should be used to free the resources after the domain object is no longer needed.

conn
  pointer to the hypervisor connection
uuid
  the raw UUID for the domain
Returns
  a new domain object or NULL in case of failure. If the domain cannot be found, then VIR_ERR_NO_DOMAIN error is raised.

### `virDomainLookupByUUIDString`

    virDomainPtr	virDomainLookupByUUIDString	(virConnectPtr conn,
    						 const char * uuidstr)

Try to lookup a domain on the given hypervisor based on its UUID.

virDomainFree should be used to free the resources after the domain object is no longer needed.

conn
  pointer to the hypervisor connection
uuidstr
  the string UUID for the domain
Returns
  a new domain object or NULL in case of failure. If the domain cannot be found, then VIR_ERR_NO_DOMAIN error is raised.

### `virDomainManagedSave`

    int	virDomainManagedSave		(virDomainPtr dom,
    					 unsigned int flags)

This method will suspend a domain and save its memory contents to a file on disk. After the call, if successful, the domain is not listed as running anymore. The difference from virDomainSave() is that libvirt is keeping track of the saved state itself, and will reuse it once the domain is being restarted (automatically or via an explicit libvirt call). As a result any running domain is sure to not have a managed saved image. This also implies that managed save only works on persistent domains, since the domain must still exist in order to use virDomainCreate() to restart it.

If @flags includes VIR_DOMAIN_SAVE_BYPASS_CACHE, then libvirt will attempt to bypass the file system cache while creating the file, or fail if it cannot do so for the given system; this can allow less pressure on file system cache, but also risks slowing saves to NFS.

Normally, the managed saved state will remember whether the domain was running or paused, and start will resume to the same state. Specifying VIR_DOMAIN_SAVE_RUNNING or VIR_DOMAIN_SAVE_PAUSED in @flags will override the default saved into the file. These two flags are mutually exclusive.

dom
  pointer to the domain
flags
  bitwise-OR of virDomainSaveRestoreFlags
Returns
  0 in case of success or -1 in case of failure

### `virDomainManagedSaveRemove`

    int	virDomainManagedSaveRemove	(virDomainPtr dom,
    					 unsigned int flags)

Remove any managed save image for this domain.

dom
  pointer to the domain
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  0 in case of success, and -1 in case of error

### `virDomainMemoryPeek`

    int	virDomainMemoryPeek		(virDomainPtr dom,
    					 unsigned long long start,
    					 size_t size,
    					 void * buffer,
    					 unsigned int flags)

This function allows you to read the contents of a domain's memory.

The memory which is read is controlled by the 'start', 'size' and 'flags' parameters.

If 'flags' is VIR_MEMORY_VIRTUAL then the 'start' and 'size' parameters are interpreted as virtual memory addresses for whichever task happens to be running on the domain at the moment. Although this sounds haphazard it is in fact what you want in order to read Linux kernel state, because it ensures that pointers in the kernel image can be interpreted coherently.

'buffer' is the return buffer and must be at least 'size' bytes. 'size' may be 0 to test if the call would succeed.

NB. The remote driver imposes a 64K byte limit on 'size'. For your program to be able to work reliably over a remote connection you should split large requests to <= 65536 bytes. However, with 0.9.13 this RPC limit has been raised to 1M byte. Starting with version 1.0.6 the RPC limit has been raised again. Now large requests up to 16M byte are supported.

dom
  pointer to the domain object
start
  start of memory to peek
size
  size of memory to peek
buffer
  return buffer (must be at least size bytes)
flags
  bitwise-OR of virDomainMemoryFlags
Returns
  0 in case of success or -1 in case of failure. really 64 bits

### `virDomainMemoryStats`

    int	virDomainMemoryStats		(virDomainPtr dom,
    					 virDomainMemoryStatPtr stats,
    					 unsigned int nr_stats,
    					 unsigned int flags)

This function provides memory statistics for the domain.

Up to 'nr_stats' elements of 'stats' will be populated with memory statistics from the domain. Only statistics supported by the domain, the driver, and this version of libvirt will be returned.

Memory Statistics:

VIR_DOMAIN_MEMORY_STAT_SWAP_IN: The total amount of data read from swap space (in kb). VIR_DOMAIN_MEMORY_STAT_SWAP_OUT: The total amount of memory written out to swap space (in kb). VIR_DOMAIN_MEMORY_STAT_MAJOR_FAULT: The number of page faults that required disk IO to service. VIR_DOMAIN_MEMORY_STAT_MINOR_FAULT: The number of page faults serviced without disk IO. VIR_DOMAIN_MEMORY_STAT_UNUSED: The amount of memory which is not being used for any purpose (in kb). VIR_DOMAIN_MEMORY_STAT_AVAILABLE: The total amount of memory available to the domain's OS (in kb). VIR_DOMAIN_MEMORY_STAT_ACTUAL_BALLOON: Current balloon value (in kb).

dom
  pointer to the domain object
stats
  nr_stats-sized array of stat structures (returned)
nr_stats
  number of memory statistics requested
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  The number of stats provided or -1 in case of failure.

### `virDomainMigrate`

    virDomainPtr	virDomainMigrate	(virDomainPtr domain,
    					 virConnectPtr dconn,
    					 unsigned long flags,
    					 const char * dname,
    					 const char * uri,
    					 unsigned long bandwidth)

Migrate the domain object from its current host to the destination host given by dconn (a connection to the destination host).

Flags may be one of more of the following: VIR_MIGRATE_LIVE Do not pause the VM during migration VIR_MIGRATE_PEER2PEER Direct connection between source & destination hosts VIR_MIGRATE_TUNNELLED Tunnel migration data over the libvirt RPC channel VIR_MIGRATE_PERSIST_DEST If the migration is successful, persist the domain on the destination host. VIR_MIGRATE_UNDEFINE_SOURCE If the migration is successful, undefine the domain on the source host. VIR_MIGRATE_PAUSED Leave the domain suspended on the remote side. VIR_MIGRATE_NON_SHARED_DISK Migration with non-shared storage with full disk copy VIR_MIGRATE_NON_SHARED_INC Migration with non-shared storage with incremental disk copy VIR_MIGRATE_CHANGE_PROTECTION Protect against domain configuration changes during the migration process (set automatically when supported). VIR_MIGRATE_UNSAFE Force migration even if it is considered unsafe. VIR_MIGRATE_OFFLINE Migrate offline

VIR_MIGRATE_TUNNELLED requires that VIR_MIGRATE_PEER2PEER be set. Applications using the VIR_MIGRATE_PEER2PEER flag will probably prefer to invoke virDomainMigrateToURI, avoiding the need to open connection to the destination host themselves.

If a hypervisor supports renaming domains during migration, then you may set the dname parameter to the new name (otherwise it keeps the same name). If this is not supported by the hypervisor, dname must be NULL or else you will get an error.

If the VIR_MIGRATE_PEER2PEER flag is set, the uri parameter must be a valid libvirt connection URI, by which the source libvirt driver can connect to the destination libvirt. If omitted, the dconn connection object will be queried for its current URI.

If the VIR_MIGRATE_PEER2PEER flag is NOT set, the URI parameter takes a hypervisor specific format. The hypervisor capabilities XML includes details of the support URI schemes. If omitted the dconn will be asked for a default URI.

If you want to copy non-shared storage within migration you can use either VIR_MIGRATE_NON_SHARED_DISK or VIR_MIGRATE_NON_SHARED_INC as they are mutually exclusive.

In either case it is typically only necessary to specify a URI if the destination host has multiple interfaces and a specific interface is required to transmit migration data.

The maximum bandwidth (in MiB/s) that will be used to do migration can be specified with the bandwidth parameter. If set to 0, libvirt will choose a suitable default. Some hypervisors do not support this feature and will return an error if bandwidth is not 0.

To see which features are supported by the current hypervisor, see virConnectGetCapabilities, /capabilities/host/migration_features.

There are many limitations on migration imposed by the underlying technology - for example it may not be possible to migrate between different processors even with the same architecture, or between different types of hypervisor.

virDomainFree should be used to free the resources after the returned domain object is no longer needed.

domain
  a domain object
dconn
  destination host (a connection object)
flags
  bitwise-OR of virDomainMigrateFlags
dname
  (optional) rename domain to this at destination
uri
  (optional) dest hostname/URI as seen from the source host
bandwidth
  (optional) specify migration bandwidth limit in MiB/s
Returns
  the new domain object if the migration was successful, or NULL in case of error. Note that the new domain object exists in the scope of the destination connection (dconn).

### `virDomainMigrate2`

    virDomainPtr	virDomainMigrate2	(virDomainPtr domain,
    					 virConnectPtr dconn,
    					 const char * dxml,
    					 unsigned long flags,
    					 const char * dname,
    					 const char * uri,
    					 unsigned long bandwidth)

Migrate the domain object from its current host to the destination host given by dconn (a connection to the destination host).

Flags may be one of more of the following: VIR_MIGRATE_LIVE Do not pause the VM during migration VIR_MIGRATE_PEER2PEER Direct connection between source & destination hosts VIR_MIGRATE_TUNNELLED Tunnel migration data over the libvirt RPC channel VIR_MIGRATE_PERSIST_DEST If the migration is successful, persist the domain on the destination host. VIR_MIGRATE_UNDEFINE_SOURCE If the migration is successful, undefine the domain on the source host. VIR_MIGRATE_PAUSED Leave the domain suspended on the remote side. VIR_MIGRATE_NON_SHARED_DISK Migration with non-shared storage with full disk copy VIR_MIGRATE_NON_SHARED_INC Migration with non-shared storage with incremental disk copy VIR_MIGRATE_CHANGE_PROTECTION Protect against domain configuration changes during the migration process (set automatically when supported). VIR_MIGRATE_UNSAFE Force migration even if it is considered unsafe. VIR_MIGRATE_OFFLINE Migrate offline

VIR_MIGRATE_TUNNELLED requires that VIR_MIGRATE_PEER2PEER be set. Applications using the VIR_MIGRATE_PEER2PEER flag will probably prefer to invoke virDomainMigrateToURI, avoiding the need to open connection to the destination host themselves.

If a hypervisor supports renaming domains during migration, then you may set the dname parameter to the new name (otherwise it keeps the same name). If this is not supported by the hypervisor, dname must be NULL or else you will get an error.

If the VIR_MIGRATE_PEER2PEER flag is set, the uri parameter must be a valid libvirt connection URI, by which the source libvirt driver can connect to the destination libvirt. If omitted, the dconn connection object will be queried for its current URI.

If the VIR_MIGRATE_PEER2PEER flag is NOT set, the URI parameter takes a hypervisor specific format. The hypervisor capabilities XML includes details of the support URI schemes. If omitted the dconn will be asked for a default URI.

If you want to copy non-shared storage within migration you can use either VIR_MIGRATE_NON_SHARED_DISK or VIR_MIGRATE_NON_SHARED_INC as they are mutually exclusive.

In either case it is typically only necessary to specify a URI if the destination host has multiple interfaces and a specific interface is required to transmit migration data.

The maximum bandwidth (in MiB/s) that will be used to do migration can be specified with the bandwidth parameter. If set to 0, libvirt will choose a suitable default. Some hypervisors do not support this feature and will return an error if bandwidth is not 0.

To see which features are supported by the current hypervisor, see virConnectGetCapabilities, /capabilities/host/migration_features.

There are many limitations on migration imposed by the underlying technology - for example it may not be possible to migrate between different processors even with the same architecture, or between different types of hypervisor.

If the hypervisor supports it, @dxml can be used to alter host-specific portions of the domain XML that will be used on the destination. For example, it is possible to alter the backing filename that is associated with a disk device, in order to account for naming differences between source and destination in accessing the underlying storage. The migration will fail if @dxml would cause any guest-visible changes. Pass NULL if no changes are needed to the XML between source and destination. @dxml cannot be used to rename the domain during migration (use @dname for that purpose). Domain name in @dxml must match the original domain name.

virDomainFree should be used to free the resources after the returned domain object is no longer needed.

domain
  a domain object
dconn
  destination host (a connection object)
dxml
  (optional) XML config for launching guest on target
flags
  bitwise-OR of virDomainMigrateFlags
dname
  (optional) rename domain to this at destination
uri
  (optional) dest hostname/URI as seen from the source host
bandwidth
  (optional) specify migration bandwidth limit in MiB/s
Returns
  the new domain object if the migration was successful, or NULL in case of error. Note that the new domain object exists in the scope of the destination connection (dconn).

### `virDomainMigrate3`

    virDomainPtr	virDomainMigrate3	(virDomainPtr domain,
    					 virConnectPtr dconn,
    					 virTypedParameterPtr params,
    					 unsigned int nparams,
    					 unsigned int flags)

Migrate the domain object from its current host to the destination host given by dconn (a connection to the destination host).

See virDomainMigrateFlags documentation for description of individual flags.

VIR_MIGRATE_TUNNELLED and VIR_MIGRATE_PEER2PEER are not supported by this API, use virDomainMigrateToURI3 instead.

If you want to copy non-shared storage within migration you can use either VIR_MIGRATE_NON_SHARED_DISK or VIR_MIGRATE_NON_SHARED_INC as they are mutually exclusive.

There are many limitations on migration imposed by the underlying technology - for example it may not be possible to migrate between different processors even with the same architecture, or between different types of hypervisor.

virDomainFree should be used to free the resources after the returned domain object is no longer needed.

domain
  a domain object
dconn
  destination host (a connection object)
params
  (optional) migration parameters
nparams
  (optional) number of migration parameters in @params
flags
  bitwise-OR of virDomainMigrateFlags
Returns
  the new domain object if the migration was successful, or NULL in case of error. Note that the new domain object exists in the scope of the destination connection (dconn).

### `virDomainMigrateGetCompressionCache`

    int	virDomainMigrateGetCompressionCache	(virDomainPtr domain,
    						 unsigned long long * cacheSize,
    						 unsigned int flags)

Gets current size of the cache (in bytes) used for compressing repeatedly transferred memory pages during live migration.

domain
  a domain object
cacheSize
  return value of current size of the cache (in bytes)
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  0 in case of success, -1 otherwise.

### `virDomainMigrateGetMaxSpeed`

    int	virDomainMigrateGetMaxSpeed	(virDomainPtr domain,
    					 unsigned long * bandwidth,
    					 unsigned int flags)

Get the current maximum bandwidth (in MiB/s) that will be used if the domain is migrated. Not all hypervisors will support a bandwidth limit.

domain
  a domain object
bandwidth
  return value of current migration bandwidth limit in MiB/s
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  0 in case of success, -1 otherwise.

### `virDomainMigrateSetCompressionCache`

    int	virDomainMigrateSetCompressionCache	(virDomainPtr domain,
    						 unsigned long long cacheSize,
    						 unsigned int flags)

Sets size of the cache (in bytes) used for compressing repeatedly transferred memory pages during live migration. It's supposed to be called while the domain is being live-migrated as a reaction to migration progress and increasing number of compression cache misses obtained from virDomainGetJobStats.

domain
  a domain object
cacheSize
  size of the cache (in bytes) used for compression
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  0 in case of success, -1 otherwise.

### `virDomainMigrateSetMaxDowntime`

    int	virDomainMigrateSetMaxDowntime	(virDomainPtr domain,
    					 unsigned long long downtime,
    					 unsigned int flags)

Sets maximum tolerable time for which the domain is allowed to be paused at the end of live migration. It's supposed to be called while the domain is being live-migrated as a reaction to migration progress.

domain
  a domain object
downtime
  maximum tolerable downtime for live migration, in milliseconds
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  0 in case of success, -1 otherwise.

### `virDomainMigrateSetMaxSpeed`

    int	virDomainMigrateSetMaxSpeed	(virDomainPtr domain,
    					 unsigned long bandwidth,
    					 unsigned int flags)

The maximum bandwidth (in MiB/s) that will be used to do migration can be specified with the bandwidth parameter. Not all hypervisors will support a bandwidth cap

domain
  a domain object
bandwidth
  migration bandwidth limit in MiB/s
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  0 in case of success, -1 otherwise.

### `virDomainMigrateToURI`

    int	virDomainMigrateToURI		(virDomainPtr domain,
    					 const char * duri,
    					 unsigned long flags,
    					 const char * dname,
    					 unsigned long bandwidth)

Migrate the domain object from its current host to the destination host given by duri.

Flags may be one of more of the following: VIR_MIGRATE_LIVE Do not pause the VM during migration VIR_MIGRATE_PEER2PEER Direct connection between source & destination hosts VIR_MIGRATE_TUNNELLED Tunnel migration data over the libvirt RPC channel VIR_MIGRATE_PERSIST_DEST If the migration is successful, persist the domain on the destination host. VIR_MIGRATE_UNDEFINE_SOURCE If the migration is successful, undefine the domain on the source host. VIR_MIGRATE_PAUSED Leave the domain suspended on the remote side. VIR_MIGRATE_NON_SHARED_DISK Migration with non-shared storage with full disk copy VIR_MIGRATE_NON_SHARED_INC Migration with non-shared storage with incremental disk copy VIR_MIGRATE_CHANGE_PROTECTION Protect against domain configuration changes during the migration process (set automatically when supported). VIR_MIGRATE_UNSAFE Force migration even if it is considered unsafe. VIR_MIGRATE_OFFLINE Migrate offline

The operation of this API hinges on the VIR_MIGRATE_PEER2PEER flag. If the VIR_MIGRATE_PEER2PEER flag is NOT set, the duri parameter takes a hypervisor specific format. The uri_transports element of the hypervisor capabilities XML includes details of the supported URI schemes. Not all hypervisors will support this mode of migration, so if the VIR_MIGRATE_PEER2PEER flag is not set, then it may be necessary to use the alternative virDomainMigrate API providing and explicit virConnectPtr for the destination host.

If the VIR_MIGRATE_PEER2PEER flag IS set, the duri parameter must be a valid libvirt connection URI, by which the source libvirt driver can connect to the destination libvirt.

VIR_MIGRATE_TUNNELLED requires that VIR_MIGRATE_PEER2PEER be set.

If you want to copy non-shared storage within migration you can use either VIR_MIGRATE_NON_SHARED_DISK or VIR_MIGRATE_NON_SHARED_INC as they are mutually exclusive.

If a hypervisor supports renaming domains during migration, the dname parameter specifies the new name for the domain. Setting dname to NULL keeps the domain name the same. If domain renaming is not supported by the hypervisor, dname must be NULL or else an error will be returned.

The maximum bandwidth (in MiB/s) that will be used to do migration can be specified with the bandwidth parameter. If set to 0, libvirt will choose a suitable default. Some hypervisors do not support this feature and will return an error if bandwidth is not 0.

To see which features are supported by the current hypervisor, see virConnectGetCapabilities, /capabilities/host/migration_features.

There are many limitations on migration imposed by the underlying technology - for example it may not be possible to migrate between different processors even with the same architecture, or between different types of hypervisor.

domain
  a domain object
duri
  mandatory URI for the destination host
flags
  bitwise-OR of virDomainMigrateFlags
dname
  (optional) rename domain to this at destination
bandwidth
  (optional) specify migration bandwidth limit in MiB/s
Returns
  0 if the migration succeeded, -1 upon error.

### `virDomainMigrateToURI2`

    int	virDomainMigrateToURI2		(virDomainPtr domain,
    					 const char * dconnuri,
    					 const char * miguri,
    					 const char * dxml,
    					 unsigned long flags,
    					 const char * dname,
    					 unsigned long bandwidth)

Migrate the domain object from its current host to the destination host given by duri.

Flags may be one of more of the following: VIR_MIGRATE_LIVE Do not pause the VM during migration VIR_MIGRATE_PEER2PEER Direct connection between source & destination hosts VIR_MIGRATE_TUNNELLED Tunnel migration data over the libvirt RPC channel VIR_MIGRATE_PERSIST_DEST If the migration is successful, persist the domain on the destination host. VIR_MIGRATE_UNDEFINE_SOURCE If the migration is successful, undefine the domain on the source host. VIR_MIGRATE_PAUSED Leave the domain suspended on the remote side. VIR_MIGRATE_NON_SHARED_DISK Migration with non-shared storage with full disk copy VIR_MIGRATE_NON_SHARED_INC Migration with non-shared storage with incremental disk copy VIR_MIGRATE_CHANGE_PROTECTION Protect against domain configuration changes during the migration process (set automatically when supported). VIR_MIGRATE_UNSAFE Force migration even if it is considered unsafe. VIR_MIGRATE_OFFLINE Migrate offline

The operation of this API hinges on the VIR_MIGRATE_PEER2PEER flag.

If the VIR_MIGRATE_PEER2PEER flag is set, the @dconnuri parameter must be a valid libvirt connection URI, by which the source libvirt driver can connect to the destination libvirt. If the VIR_MIGRATE_PEER2PEER flag is NOT set, then @dconnuri must be NULL.

If the VIR_MIGRATE_TUNNELLED flag is NOT set, then the @miguri parameter allows specification of a URI to use to initiate the VM migration. It takes a hypervisor specific format. The uri_transports element of the hypervisor capabilities XML includes details of the supported URI schemes.

VIR_MIGRATE_TUNNELLED requires that VIR_MIGRATE_PEER2PEER be set.

If you want to copy non-shared storage within migration you can use either VIR_MIGRATE_NON_SHARED_DISK or VIR_MIGRATE_NON_SHARED_INC as they are mutually exclusive.

If a hypervisor supports changing the configuration of the guest during migration, the @dxml parameter specifies the new config for the guest. The configuration must include an identical set of virtual devices, to ensure a stable guest ABI across migration. Only parameters related to host side configuration can be changed in the XML. Hypervisors will validate this and refuse to allow migration if the provided XML would cause a change in the guest ABI,

If a hypervisor supports renaming domains during migration, the dname parameter specifies the new name for the domain. Setting dname to NULL keeps the domain name the same. If domain renaming is not supported by the hypervisor, dname must be NULL or else an error will be returned.

The maximum bandwidth (in MiB/s) that will be used to do migration can be specified with the bandwidth parameter. If set to 0, libvirt will choose a suitable default. Some hypervisors do not support this feature and will return an error if bandwidth is not 0.

To see which features are supported by the current hypervisor, see virConnectGetCapabilities, /capabilities/host/migration_features.

There are many limitations on migration imposed by the underlying technology - for example it may not be possible to migrate between different processors even with the same architecture, or between different types of hypervisor.

domain
  a domain object
dconnuri
  (optional) URI for target libvirtd if @flags includes VIR_MIGRATE_PEER2PEER
miguri
  (optional) URI for invoking the migration, not if @flags includs VIR_MIGRATE_TUNNELLED
dxml
  (optional) XML config for launching guest on target
flags
  bitwise-OR of virDomainMigrateFlags
dname
  (optional) rename domain to this at destination
bandwidth
  (optional) specify migration bandwidth limit in MiB/s
Returns
  0 if the migration succeeded, -1 upon error.

### `virDomainMigrateToURI3`

    int	virDomainMigrateToURI3		(virDomainPtr domain,
    					 const char * dconnuri,
    					 virTypedParameterPtr params,
    					 unsigned int nparams,
    					 unsigned int flags)

Migrate the domain object from its current host to the destination host given by URI.

See virDomainMigrateFlags documentation for description of individual flags.

The operation of this API hinges on the VIR_MIGRATE_PEER2PEER flag.

If the VIR_MIGRATE_PEER2PEER flag is set, the @dconnuri parameter must be a valid libvirt connection URI, by which the source libvirt daemon can connect to the destination libvirt.

If the VIR_MIGRATE_PEER2PEER flag is NOT set, then @dconnuri must be NULL and VIR_MIGRATE_PARAM_URI migration parameter must be filled in with hypervisor specific URI used to initiate the migration. This is called "direct" migration.

VIR_MIGRATE_TUNNELLED requires that VIR_MIGRATE_PEER2PEER be set.

If you want to copy non-shared storage within migration you can use either VIR_MIGRATE_NON_SHARED_DISK or VIR_MIGRATE_NON_SHARED_INC as they are mutually exclusive.

There are many limitations on migration imposed by the underlying technology - for example it may not be possible to migrate between different processors even with the same architecture, or between different types of hypervisor.

domain
  a domain object
dconnuri
  (optional) URI for target libvirtd if @flags includes VIR_MIGRATE_PEER2PEER
params
  (optional) migration parameters
nparams
  (optional) number of migration parameters in @params
flags
  bitwise-OR of virDomainMigrateFlags
Returns
  0 if the migration succeeded, -1 upon error.

### `virDomainOpenChannel`

    int	virDomainOpenChannel		(virDomainPtr dom,
    					 const char * name,
    					 virStreamPtr st,
    					 unsigned int flags)

This opens the host interface associated with a channel device on a guest, if the host interface is supported. If @name is given, it can match either the device alias (e.g. "channel0"), or the virtio target name (e.g. "org.qemu.guest_agent.0"). If @name is omitted, then the first channel is opened. The channel is associated with the passed in @st stream, which should have been opened in non-blocking mode for bi-directional I/O.

By default, when @flags is 0, the open will fail if libvirt detects that the channel is already in use by another client; passing VIR_DOMAIN_CHANNEL_FORCE will cause libvirt to forcefully remove the other client prior to opening this channel.

dom
  a domain object
name
  the channel name, or NULL
st
  a stream to associate with the channel
flags
  bitwise-OR of virDomainChannelFlags
Returns
  0 if the channel was opened, -1 on error

### `virDomainOpenConsole`

    int	virDomainOpenConsole		(virDomainPtr dom,
    					 const char * dev_name,
    					 virStreamPtr st,
    					 unsigned int flags)

This opens the backend associated with a console, serial or parallel port device on a guest, if the backend is supported. If the @dev_name is omitted, then the first console or serial device is opened. The console is associated with the passed in @st stream, which should have been opened in non-blocking mode for bi-directional I/O.

By default, when @flags is 0, the open will fail if libvirt detects that the console is already in use by another client; passing VIR_DOMAIN_CONSOLE_FORCE will cause libvirt to forcefully remove the other client prior to opening this console.

If flag VIR_DOMAIN_CONSOLE_SAFE the console is opened only in the case where the hypervisor driver supports safe (mutually exclusive) console handling.

Older servers did not support either flag, and also did not forbid simultaneous clients on a console, with potentially confusing results. When passing @flags of 0 in order to support a wider range of server versions, it is up to the client to ensure mutual exclusion.

dom
  a domain object
dev_name
  the console, serial or parallel port device alias, or NULL
st
  a stream to associate with the console
flags
  bitwise-OR of virDomainConsoleFlags
Returns
  0 if the console was opened, -1 on error

### `virDomainOpenGraphics`

    int	virDomainOpenGraphics		(virDomainPtr dom,
    					 unsigned int idx,
    					 int fd,
    					 unsigned int flags)

This will attempt to connect the file descriptor @fd, to the graphics backend of @dom. If @dom has multiple graphics backends configured, then @idx will determine which one is opened, starting from @idx 0.

To disable any authentication, pass the VIR_DOMAIN_OPEN_GRAPHICS_SKIPAUTH constant for @flags.

The caller should use an anonymous socketpair to open @fd before invocation.

This method can only be used when connected to a local libvirt hypervisor, over a UNIX domain socket. Attempts to use this method over a TCP connection will always fail

dom
  pointer to domain object
idx
  index of graphics config to open
fd
  file descriptor to attach graphics to
flags
  bitwise-OR of virDomainOpenGraphicsFlags
Returns
  0 on success, -1 on failure

### `virDomainOpenGraphicsFD`

    int	virDomainOpenGraphicsFD		(virDomainPtr dom,
    					 unsigned int idx,
    					 unsigned int flags)

This will create a socket pair connected to the graphics backend of @dom. One end of the socket will be returned on success, and the other end is handed to the hypervisor. If @dom has multiple graphics backends configured, then @idx will determine which one is opened, starting from @idx 0.

To disable any authentication, pass the VIR_DOMAIN_OPEN_GRAPHICS_SKIPAUTH constant for @flags.

This method can only be used when connected to a local libvirt hypervisor, over a UNIX domain socket. Attempts to use this method over a TCP connection will always fail.

dom
  pointer to domain object
idx
  index of graphics config to open
flags
  bitwise-OR of virDomainOpenGraphicsFlags
Returns
  an fd on success, -1 on failure

### `virDomainPMSuspendForDuration`

    int	virDomainPMSuspendForDuration	(virDomainPtr dom,
    					 unsigned int target,
    					 unsigned long long duration,
    					 unsigned int flags)

Attempt to have the guest enter the given @target power management suspension level. If @duration is non-zero, also schedule the guest to resume normal operation after that many seconds, if nothing else has resumed it earlier. Some hypervisors require that @duration be 0, for an indefinite suspension.

Dependent on hypervisor used, this may require a guest agent to be available, e.g. QEMU.

Beware that at least for QEMU, the domain's process will be terminated when VIR_NODE_SUSPEND_TARGET_DISK is used and a new process will be launched when libvirt is asked to wake up the domain. As a result of this, any runtime changes, such as device hotplug or memory settings, are lost unless such changes were made with VIR_DOMAIN_AFFECT_CONFIG flag.

dom
  a domain object
target
  a value from virNodeSuspendTarget
duration
  duration in seconds to suspend, or 0 for indefinite
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  0 on success, -1 on failure.

### `virDomainPMWakeup`

    int	virDomainPMWakeup		(virDomainPtr dom,
    					 unsigned int flags)

Inject a wakeup into the guest that previously used virDomainPMSuspendForDuration, rather than waiting for the previously requested duration (if any) to elapse.

dom
  a domain object
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  0 on success, -1 on failure.

### `virDomainPinEmulator`

    int	virDomainPinEmulator		(virDomainPtr domain,
    					 unsigned char * cpumap,
    					 int maplen,
    					 unsigned int flags)

Dynamically change the real CPUs which can be allocated to all emulator threads. This function may require privileged access to the hypervisor.

@flags may include VIR_DOMAIN_AFFECT_LIVE or VIR_DOMAIN_AFFECT_CONFIG. Both flags may be set. If VIR_DOMAIN_AFFECT_LIVE is set, the change affects a running domain and may fail if domain is not alive. If VIR_DOMAIN_AFFECT_CONFIG is set, the change affects persistent state, and will fail for transient domains. If neither flag is specified (that is, @flags is VIR_DOMAIN_AFFECT_CURRENT), then an inactive domain modifies persistent setup, while an active domain is hypervisor-dependent on whether just live or both live and persistent state is changed. Not all hypervisors can support all flag combinations.

See also virDomainGetEmulatorPinInfo for querying this information.

domain
  pointer to domain object, or NULL for Domain0
cpumap
  pointer to a bit map of real CPUs (in 8-bit bytes) (IN) Each bit set to 1 means that corresponding CPU is usable. Bytes are stored in little-endian order: CPU0-7, 8-15... In each byte, lowest CPU number is least significant bit.
maplen
  number of bytes in cpumap, from 1 up to size of CPU map in underlying virtualization system (Xen...). If maplen < size, missing bytes are set to zero. If maplen > size, failure code is returned.
flags
  bitwise-OR of virDomainModificationImpact
Returns
  0 in case of success, -1 in case of failure.

### `virDomainPinVcpu`

    int	virDomainPinVcpu		(virDomainPtr domain,
    					 unsigned int vcpu,
    					 unsigned char * cpumap,
    					 int maplen)

Dynamically change the real CPUs which can be allocated to a virtual CPU. This function may require privileged access to the hypervisor.

This command only changes the runtime configuration of the domain, so can only be called on an active domain.

domain
  pointer to domain object, or NULL for Domain0
vcpu
  virtual CPU number
cpumap
  pointer to a bit map of real CPUs (in 8-bit bytes) (IN) Each bit set to 1 means that corresponding CPU is usable. Bytes are stored in little-endian order: CPU0-7, 8-15... In each byte, lowest CPU number is least significant bit.
maplen
  number of bytes in cpumap, from 1 up to size of CPU map in underlying virtualization system (Xen...). If maplen < size, missing bytes are set to zero. If maplen > size, failure code is returned.
Returns
  0 in case of success, -1 in case of failure.

### `virDomainPinVcpuFlags`

    int	virDomainPinVcpuFlags		(virDomainPtr domain,
    					 unsigned int vcpu,
    					 unsigned char * cpumap,
    					 int maplen,
    					 unsigned int flags)

Dynamically change the real CPUs which can be allocated to a virtual CPU. This function may require privileged access to the hypervisor.

@flags may include VIR_DOMAIN_AFFECT_LIVE or VIR_DOMAIN_AFFECT_CONFIG. Both flags may be set. If VIR_DOMAIN_AFFECT_LIVE is set, the change affects a running domain and may fail if domain is not alive. If VIR_DOMAIN_AFFECT_CONFIG is set, the change affects persistent state, and will fail for transient domains. If neither flag is specified (that is, @flags is VIR_DOMAIN_AFFECT_CURRENT), then an inactive domain modifies persistent setup, while an active domain is hypervisor-dependent on whether just live or both live and persistent state is changed. Not all hypervisors can support all flag combinations.

See also virDomainGetVcpuPinInfo for querying this information.

domain
  pointer to domain object, or NULL for Domain0
vcpu
  virtual CPU number
cpumap
  pointer to a bit map of real CPUs (in 8-bit bytes) (IN) Each bit set to 1 means that corresponding CPU is usable. Bytes are stored in little-endian order: CPU0-7, 8-15... In each byte, lowest CPU number is least significant bit.
maplen
  number of bytes in cpumap, from 1 up to size of CPU map in underlying virtualization system (Xen...). If maplen < size, missing bytes are set to zero. If maplen > size, failure code is returned.
flags
  bitwise-OR of virDomainModificationImpact
Returns
  0 in case of success, -1 in case of failure.

### `virDomainReboot`

    int	virDomainReboot			(virDomainPtr domain,
    					 unsigned int flags)

Reboot a domain, the domain object is still usable thereafter, but the domain OS is being stopped for a restart. Note that the guest OS may ignore the request. Additionally, the hypervisor may check and support the domain 'on_reboot' XML setting resulting in a domain that shuts down instead of rebooting.

If @flags is set to zero, then the hypervisor will choose the method of shutdown it considers best. To have greater control pass one or more of the virDomainRebootFlagValues. The order in which the hypervisor tries each shutdown method is undefined, and a hypervisor is not required to support all methods.

To use guest agent (VIR_DOMAIN_REBOOT_GUEST_AGENT) the domain XML must have <channel> configured.

Due to implementation limitations in some drivers (the qemu driver, for instance) it is not advised to migrate or save a guest that is rebooting as a result of this API. Migrating such a guest can lead to a plain shutdown on the destination.

domain
  a domain object
flags
  bitwise-OR of virDomainRebootFlagValues
Returns
  0 in case of success and -1 in case of failure.

### `virDomainRef`

    int	virDomainRef			(virDomainPtr domain)

Increment the reference count on the domain. For each additional call to this method, there shall be a corresponding call to virDomainFree to release the reference count, once the caller no longer needs the reference to this object.

This method is typically useful for applications where multiple threads are using a connection, and it is required that the connection remain open until all threads have finished using it. ie, each new thread using a domain would increment the reference count.

domain
  the domain to hold a reference on
Returns
  0 in case of success and -1 in case of failure.

### `virDomainReset`

    int	virDomainReset			(virDomainPtr domain,
    					 unsigned int flags)

Reset a domain immediately without any guest OS shutdown. Reset emulates the power reset button on a machine, where all hardware sees the RST line set and reinitializes internal state.

Note that there is a risk of data loss caused by reset without any guest OS shutdown.

domain
  a domain object
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  0 in case of success and -1 in case of failure.

### `virDomainRestore`

    int	virDomainRestore		(virConnectPtr conn,
    					 const char * from)

This method will restore a domain saved to disk by virDomainSave().

See virDomainRestoreFlags() for more control.

conn
  pointer to the hypervisor connection
from
  path to the input file
Returns
  0 in case of success and -1 in case of failure.

### `virDomainRestoreFlags`

    int	virDomainRestoreFlags		(virConnectPtr conn,
    					 const char * from,
    					 const char * dxml,
    					 unsigned int flags)

This method will restore a domain saved to disk by virDomainSave().

If the hypervisor supports it, @dxml can be used to alter host-specific portions of the domain XML that will be used when restoring an image. For example, it is possible to alter the backing filename that is associated with a disk device, in order to prepare for file renaming done as part of backing up the disk device while the domain is stopped.

If @flags includes VIR_DOMAIN_SAVE_BYPASS_CACHE, then libvirt will attempt to bypass the file system cache while restoring the file, or fail if it cannot do so for the given system; this can allow less pressure on file system cache, but also risks slowing restores from NFS.

Normally, the saved state file will remember whether the domain was running or paused, and restore defaults to the same state. Specifying VIR_DOMAIN_SAVE_RUNNING or VIR_DOMAIN_SAVE_PAUSED in @flags will override the default read from the file. These two flags are mutually exclusive.

conn
  pointer to the hypervisor connection
from
  path to the input file
dxml
  (optional) XML config for adjusting guest xml used on restore
flags
  bitwise-OR of virDomainSaveRestoreFlags
Returns
  0 in case of success and -1 in case of failure.

### `virDomainResume`

    int	virDomainResume			(virDomainPtr domain)

Resume a suspended domain, the process is restarted from the state where it was frozen by calling virDomainSuspend(). This function may require privileged access Moreover, resume may not be supported if domain is in some special state like VIR_DOMAIN_PMSUSPENDED.

domain
  a domain object
Returns
  0 in case of success and -1 in case of failure.

### `virDomainRevertToSnapshot`

    int	virDomainRevertToSnapshot	(virDomainSnapshotPtr snapshot,
    					 unsigned int flags)

Revert the domain to a given snapshot.

Normally, the domain will revert to the same state the domain was in while the snapshot was taken (whether inactive, running, or paused), except that disk snapshots default to reverting to inactive state. Including VIR_DOMAIN_SNAPSHOT_REVERT_RUNNING in @flags overrides the snapshot state to guarantee a running domain after the revert; or including VIR_DOMAIN_SNAPSHOT_REVERT_PAUSED in @flags guarantees a paused domain after the revert. These two flags are mutually exclusive. While a persistent domain does not need either flag, it is not possible to revert a transient domain into an inactive state, so transient domains require the use of one of these two flags.

Reverting to any snapshot discards all configuration changes made since the last snapshot. Additionally, reverting to a snapshot from a running domain is a form of data loss, since it discards whatever is in the guest's RAM at the time. Since the very nature of keeping snapshots implies the intent to roll back state, no additional confirmation is normally required for these lossy effects.

However, there are two particular situations where reverting will be refused by default, and where @flags must include VIR_DOMAIN_SNAPSHOT_REVERT_FORCE to acknowledge the risks. 1) Any attempt to revert to a snapshot that lacks the metadata to perform ABI compatibility checks (generally the case for snapshots that lack a full <domain> when listed by virDomainSnapshotGetXMLDesc(), such as those created prior to libvirt 0.9.5). 2) Any attempt to revert a running domain to an active state that requires starting a new hypervisor instance rather than reusing the existing hypervisor (since this would terminate all connections to the domain, such as such as VNC or Spice graphics) - this condition arises from active snapshots that are provably ABI incomaptible, as well as from inactive snapshots with a @flags request to start the domain after the revert.

snapshot
  a domain snapshot object
flags
  bitwise-OR of virDomainSnapshotRevertFlags
Returns
  0 if the creation is successful, -1 on error.

### `virDomainSave`

    int	virDomainSave			(virDomainPtr domain,
    					 const char * to)

This method will suspend a domain and save its memory contents to a file on disk. After the call, if successful, the domain is not listed as running anymore (this ends the life of a transient domain). Use virDomainRestore() to restore a domain after saving.

See virDomainSaveFlags() for more control. Also, a save file can be inspected or modified slightly with virDomainSaveImageGetXMLDesc() and virDomainSaveImageDefineXML().

domain
  a domain object
to
  path for the output file
Returns
  0 in case of success and -1 in case of failure.

### `virDomainSaveFlags`

    int	virDomainSaveFlags		(virDomainPtr domain,
    					 const char * to,
    					 const char * dxml,
    					 unsigned int flags)

This method will suspend a domain and save its memory contents to a file on disk. After the call, if successful, the domain is not listed as running anymore (this ends the life of a transient domain). Use virDomainRestore() to restore a domain after saving.

If the hypervisor supports it, @dxml can be used to alter host-specific portions of the domain XML that will be used when restoring an image. For example, it is possible to alter the backing filename that is associated with a disk device, in order to prepare for file renaming done as part of backing up the disk device while the domain is stopped.

If @flags includes VIR_DOMAIN_SAVE_BYPASS_CACHE, then libvirt will attempt to bypass the file system cache while creating the file, or fail if it cannot do so for the given system; this can allow less pressure on file system cache, but also risks slowing saves to NFS.

Normally, the saved state file will remember whether the domain was running or paused, and restore defaults to the same state. Specifying VIR_DOMAIN_SAVE_RUNNING or VIR_DOMAIN_SAVE_PAUSED in @flags will override what state gets saved into the file. These two flags are mutually exclusive.

A save file can be inspected or modified slightly with virDomainSaveImageGetXMLDesc() and virDomainSaveImageDefineXML().

Some hypervisors may prevent this operation if there is a current block copy operation; in that case, use virDomainBlockJobAbort() to stop the block copy first.

domain
  a domain object
to
  path for the output file
dxml
  (optional) XML config for adjusting guest xml used on restore
flags
  bitwise-OR of virDomainSaveRestoreFlags
Returns
  0 in case of success and -1 in case of failure.

### `virDomainSaveImageDefineXML`

    int	virDomainSaveImageDefineXML	(virConnectPtr conn,
    					 const char * file,
    					 const char * dxml,
    					 unsigned int flags)

This updates the definition of a domain stored in a saved state file. @file must be a file created previously by virDomainSave() or virDomainSaveFlags().

@dxml can be used to alter host-specific portions of the domain XML that will be used when restoring an image. For example, it is possible to alter the backing filename that is associated with a disk device, to match renaming done as part of backing up the disk device while the domain is stopped.

Normally, the saved state file will remember whether the domain was running or paused, and restore defaults to the same state. Specifying VIR_DOMAIN_SAVE_RUNNING or VIR_DOMAIN_SAVE_PAUSED in @flags will override the default saved into the file; omitting both leaves the file's default unchanged. These two flags are mutually exclusive.

conn
  pointer to the hypervisor connection
file
  path to saved state file
dxml
  XML config for adjusting guest xml used on restore
flags
  bitwise-OR of virDomainSaveRestoreFlags
Returns
  0 in case of success and -1 in case of failure.

### `virDomainSaveImageGetXMLDesc`

    char *	virDomainSaveImageGetXMLDesc	(virConnectPtr conn,
    					 const char * file,
    					 unsigned int flags)

This method will extract the XML describing the domain at the time a saved state file was created. @file must be a file created previously by virDomainSave() or virDomainSaveFlags().

No security-sensitive data will be included unless @flags contains VIR_DOMAIN_XML_SECURE; this flag is rejected on read-only connections. For this API, @flags should not contain either VIR_DOMAIN_XML_INACTIVE or VIR_DOMAIN_XML_UPDATE_CPU.

conn
  pointer to the hypervisor connection
file
  path to saved state file
flags
  bitwise-OR of subset of virDomainXMLFlags
Returns
  a 0 terminated UTF-8 encoded XML instance, or NULL in case of error. The caller must free() the returned value.

### `virDomainScreenshot`

    char *	virDomainScreenshot		(virDomainPtr domain,
    					 virStreamPtr stream,
    					 unsigned int screen,
    					 unsigned int flags)

Take a screenshot of current domain console as a stream. The image format is hypervisor specific. Moreover, some hypervisors supports multiple displays per domain. These can be distinguished by @screen argument.

This call sets up a stream; subsequent use of stream API is necessary to transfer actual data, determine how much data is successfully transferred, and detect any errors.

The screen ID is the sequential number of screen. In case of multiple graphics cards, heads are enumerated before devices, e.g. having two graphics cards, both with four heads, screen ID 5 addresses the second head on the second card.

domain
  a domain object
stream
  stream to use as output
screen
  monitor ID to take screenshot from
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  a string representing the mime-type of the image format, or NULL upon error. The caller must free() the returned value.

### `virDomainSendKey`

    int	virDomainSendKey		(virDomainPtr domain,
    					 unsigned int codeset,
    					 unsigned int holdtime,
    					 unsigned int * keycodes,
    					 int nkeycodes,
    					 unsigned int flags)

Send key(s) to the guest.

domain
  pointer to domain object, or NULL for Domain0
codeset
  the code set of keycodes, from virKeycodeSet
holdtime
  the duration (in milliseconds) that the keys will be held
keycodes
  array of keycodes
nkeycodes
  number of keycodes, up to VIR_DOMAIN_SEND_KEY_MAX_KEYS
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  0 in case of success, -1 in case of failure.

### `virDomainSendProcessSignal`

    int	virDomainSendProcessSignal	(virDomainPtr domain,
    					 long long pid_value,
    					 unsigned int signum,
    					 unsigned int flags)

Send a signal to the designated process in the guest

The signal numbers must be taken from the virDomainProcessSignal enum. These will be translated to the corresponding signal number for the guest OS, by the guest agent delivering the signal. If there is no mapping from virDomainProcessSignal to the native OS signals, this API will report an error.

If @pid_value is an integer greater than zero, it is treated as a process ID. If @pid_value is an integer less than zero, it is treated as a process group ID. All the @pid_value numbers are from the container/guest namespace. The value zero is not valid.

Not all hypervisors will support sending signals to arbitrary processes or process groups. If this API is implemented the minimum requirement is to be able to use @pid_value == 1 (i.e. kill init). No other value is required to be supported.

If the @signum is VIR_DOMAIN_PROCESS_SIGNAL_NOP then this API will simply report whether the process is running in the container/guest.

domain
  pointer to domain object
pid_value
  a positive integer process ID, or negative integer process group ID
signum
  a signal from the virDomainProcessSignal enum
flags
  one of the virDomainProcessSignalFlag values
Returns
  0 in case of success, -1 in case of failure.

### `virDomainSetAutostart`

    int	virDomainSetAutostart		(virDomainPtr domain,
    					 int autostart)

Configure the domain to be automatically started when the host machine boots.

domain
  a domain object
autostart
  whether the domain should be automatically started 0 or 1
Returns
  -1 in case of error, 0 in case of success

### `virDomainSetBlkioParameters`

    int	virDomainSetBlkioParameters	(virDomainPtr domain,
    					 virTypedParameterPtr params,
    					 int nparams,
    					 unsigned int flags)

Change all or a subset of the blkio tunables. This function may require privileged access to the hypervisor.

domain
  pointer to domain object
params
  pointer to blkio parameter objects
nparams
  number of blkio parameters (this value can be the same or less than the number of parameters supported)
flags
  bitwise-OR of virDomainModificationImpact
Returns
  -1 in case of error, 0 in case of success.

### `virDomainSetBlockIoTune`

    int	virDomainSetBlockIoTune		(virDomainPtr dom,
    					 const char * disk,
    					 virTypedParameterPtr params,
    					 int nparams,
    					 unsigned int flags)

Change all or a subset of the per-device block IO tunables.

The @disk parameter is either an unambiguous source name of the block device (the <source file='...'/> sub-element, such as "/path/to/image"), or the device target shorthand (the <target dev='...'/> sub-element, such as "xvda"). Valid names can be found by calling virDomainGetXMLDesc() and inspecting elements within //domain/devices/disk.

dom
  pointer to domain object
disk
  path to the block device, or device shorthand
params
  Pointer to blkio parameter objects
nparams
  Number of blkio parameters (this value can be the same or less than the number of parameters supported)
flags
  bitwise-OR of virDomainModificationImpact
Returns
  -1 in case of error, 0 in case of success.

### `virDomainSetInterfaceParameters`

    int	virDomainSetInterfaceParameters	(virDomainPtr domain,
    					 const char * device,
    					 virTypedParameterPtr params,
    					 int nparams,
    					 unsigned int flags)

Change a subset or all parameters of interface; currently this includes bandwidth parameters. The value of @flags should be either VIR_DOMAIN_AFFECT_CURRENT, or a bitwise-or of values VIR_DOMAIN_AFFECT_LIVE and VIR_DOMAIN_AFFECT_CONFIG, although hypervisors vary in which flags are supported.

This function may require privileged access to the hypervisor.

domain
  pointer to domain object
device
  the interface name or mac address
params
  pointer to interface parameter objects
nparams
  number of interface parameter (this value can be the same or less than the number of parameters supported)
flags
  bitwise-OR of virDomainModificationImpact
Returns
  -1 in case of error, 0 in case of success.

### `virDomainSetMaxMemory`

    int	virDomainSetMaxMemory		(virDomainPtr domain,
    					 unsigned long memory)

Dynamically change the maximum amount of physical memory allocated to a domain. If domain is NULL, then this change the amount of memory reserved to Domain0 i.e. the domain where the application runs. This function may require privileged access to the hypervisor.

This command is hypervisor-specific for whether active, persistent, or both configurations are changed; for more control, use virDomainSetMemoryFlags().

domain
  a domain object or NULL
memory
  the memory size in kibibytes (blocks of 1024 bytes)
Returns
  0 in case of success and -1 in case of failure.

### `virDomainSetMemory`

    int	virDomainSetMemory		(virDomainPtr domain,
    					 unsigned long memory)

Dynamically change the target amount of physical memory allocated to a domain. If domain is NULL, then this change the amount of memory reserved to Domain0 i.e. the domain where the application runs. This function may require privileged access to the hypervisor.

This command only changes the runtime configuration of the domain, so can only be called on an active domain.

domain
  a domain object or NULL
memory
  the memory size in kibibytes (blocks of 1024 bytes)
Returns
  0 in case of success and -1 in case of failure.

### `virDomainSetMemoryFlags`

    int	virDomainSetMemoryFlags		(virDomainPtr domain,
    					 unsigned long memory,
    					 unsigned int flags)

Dynamically change the target amount of physical memory allocated to a domain. If domain is NULL, then this change the amount of memory reserved to Domain0 i.e. the domain where the application runs. This function may require privileged access to the hypervisor.

@flags may include VIR_DOMAIN_AFFECT_LIVE or VIR_DOMAIN_AFFECT_CONFIG. Both flags may be set. If VIR_DOMAIN_AFFECT_LIVE is set, the change affects a running domain and will fail if domain is not active. If VIR_DOMAIN_AFFECT_CONFIG is set, the change affects persistent state, and will fail for transient domains. If neither flag is specified (that is, @flags is VIR_DOMAIN_AFFECT_CURRENT), then an inactive domain modifies persistent setup, while an active domain is hypervisor-dependent on whether just live or both live and persistent state is changed. If VIR_DOMAIN_MEM_MAXIMUM is set, the change affects domain's maximum memory size rather than current memory size. Not all hypervisors can support all flag combinations.

domain
  a domain object or NULL
memory
  the memory size in kibibytes (blocks of 1024 bytes)
flags
  bitwise-OR of virDomainMemoryModFlags
Returns
  0 in case of success, -1 in case of failure.

### `virDomainSetMemoryParameters`

    int	virDomainSetMemoryParameters	(virDomainPtr domain,
    					 virTypedParameterPtr params,
    					 int nparams,
    					 unsigned int flags)

Change all or a subset of the memory tunables. This function may require privileged access to the hypervisor.

domain
  pointer to domain object
params
  pointer to memory parameter objects
nparams
  number of memory parameter (this value can be the same or less than the number of parameters supported)
flags
  bitwise-OR of virDomainModificationImpact
Returns
  -1 in case of error, 0 in case of success.

### `virDomainSetMemoryStatsPeriod`

    int	virDomainSetMemoryStatsPeriod	(virDomainPtr domain,
    					 int period,
    					 unsigned int flags)

Dynamically change the domain memory balloon driver statistics collection period. Use 0 to disable and a positive value to enable.

@flags may include VIR_DOMAIN_AFFECT_LIVE or VIR_DOMAIN_AFFECT_CONFIG. Both flags may be set. If VIR_DOMAIN_AFFECT_LIVE is set, the change affects a running domain and will fail if domain is not active. If VIR_DOMAIN_AFFECT_CONFIG is set, the change affects persistent state, and will fail for transient domains. If neither flag is specified (that is, @flags is VIR_DOMAIN_AFFECT_CURRENT), then an inactive domain modifies persistent setup, while an active domain is hypervisor-dependent on whether just live or both live and persistent state is changed.

Not all hypervisors can support all flag combinations.

domain
  a domain object or NULL
period
  the period in seconds for stats collection
flags
  bitwise-OR of virDomainMemoryModFlags
Returns
  0 in case of success, -1 in case of failure.

### `virDomainSetMetadata`

    int	virDomainSetMetadata		(virDomainPtr domain,
    					 int type,
    					 const char * metadata,
    					 const char * key,
    					 const char * uri,
    					 unsigned int flags)

Sets the appropriate domain element given by @type to the value of @metadata. A @type of VIR_DOMAIN_METADATA_DESCRIPTION is free-form text; VIR_DOMAIN_METADATA_TITLE is free-form, but no newlines are permitted, and should be short (although the length is not enforced). For these two options @key and @uri are irrelevant and must be set to NULL.

For type VIR_DOMAIN_METADATA_ELEMENT @metadata must be well-formed XML belonging to namespace defined by @uri with local name @key.

Passing NULL for @metadata says to remove that element from the domain XML (passing the empty string leaves the element present).

The resulting metadata will be present in virDomainGetXMLDesc(), as well as quick access through virDomainGetMetadata().

@flags controls whether the live domain, persistent configuration, or both will be modified.

domain
  a domain object
type
  type of metadata, from virDomainMetadataType
metadata
  new metadata text
key
  XML namespace key, or NULL
uri
  XML namespace URI, or NULL
flags
  bitwise-OR of virDomainModificationImpact
Returns
  0 on success, -1 in case of failure.

### `virDomainSetNumaParameters`

    int	virDomainSetNumaParameters	(virDomainPtr domain,
    					 virTypedParameterPtr params,
    					 int nparams,
    					 unsigned int flags)

Change all or a subset of the numa tunables. This function may require privileged access to the hypervisor.

domain
  pointer to domain object
params
  pointer to numa parameter objects
nparams
  number of numa parameters (this value can be the same or less than the number of parameters supported)
flags
  bitwise-OR of virDomainModificationImpact
Returns
  -1 in case of error, 0 in case of success.

### `virDomainSetSchedulerParameters`

    int	virDomainSetSchedulerParameters	(virDomainPtr domain,
    					 virTypedParameterPtr params,
    					 int nparams)

Change all or a subset or the scheduler parameters. It is hypervisor-specific whether this sets live, persistent, or both settings; for more control, use virDomainSetSchedulerParametersFlags.

domain
  pointer to domain object
params
  pointer to scheduler parameter objects
nparams
  number of scheduler parameter objects (this value can be the same or less than the returned value nparams of virDomainGetSchedulerType)
Returns
  -1 in case of error, 0 in case of success.

### `virDomainSetSchedulerParametersFlags`

    int	virDomainSetSchedulerParametersFlags	(virDomainPtr domain,
    						 virTypedParameterPtr params,
    						 int nparams,
    						 unsigned int flags)

Change a subset or all scheduler parameters. The value of @flags should be either VIR_DOMAIN_AFFECT_CURRENT, or a bitwise-or of values from VIR_DOMAIN_AFFECT_LIVE and VIR_DOMAIN_AFFECT_CURRENT, although hypervisors vary in which flags are supported.

domain
  pointer to domain object
params
  pointer to scheduler parameter objects
nparams
  number of scheduler parameter objects (this value can be the same or less than the returned value nparams of virDomainGetSchedulerType)
flags
  bitwise-OR of virDomainModificationImpact
Returns
  -1 in case of error, 0 in case of success.

### `virDomainSetTime`

    int	virDomainSetTime		(virDomainPtr dom,
    					 long long seconds,
    					 unsigned int nseconds,
    					 unsigned int flags)

When a domain is suspended or restored from a file the domain's OS has no idea that there was a big gap in the time. Depending on how long the gap was, NTP might not be able to resynchronize the guest.

This API tries to set guest time to the given value. The time to set (@seconds and @nseconds) should be in seconds relative to the Epoch of 1970-01-01 00:00:00 in UTC.

Please note that some hypervisors may require guest agent to be configured and running in order to be able to run this API.

dom
  a domain object
seconds
  time to set
nseconds
  the nanosecond part of @seconds
flags
  bitwise-OR of virDomainSetTimeFlags
Returns
  0 on success, -1 otherwise.

### `virDomainSetVcpus`

    int	virDomainSetVcpus		(virDomainPtr domain,
    					 unsigned int nvcpus)

Dynamically change the number of virtual CPUs used by the domain. Note that this call may fail if the underlying virtualization hypervisor does not support it or if growing the number is arbitrarily limited. This function may require privileged access to the hypervisor.

Note that if this call is executed before the guest has finished booting, the guest may fail to process the change.

This command only changes the runtime configuration of the domain, so can only be called on an active domain. It is hypervisor-dependent whether it also affects persistent configuration; for more control, use virDomainSetVcpusFlags().

domain
  pointer to domain object, or NULL for Domain0
nvcpus
  the new number of virtual CPUs for this domain
Returns
  0 in case of success, -1 in case of failure.

### `virDomainSetVcpusFlags`

    int	virDomainSetVcpusFlags		(virDomainPtr domain,
    					 unsigned int nvcpus,
    					 unsigned int flags)

Dynamically change the number of virtual CPUs used by the domain. Note that this call may fail if the underlying virtualization hypervisor does not support it or if growing the number is arbitrarily limited. This function may require privileged access to the hypervisor.

@flags may include VIR_DOMAIN_AFFECT_LIVE to affect a running domain (which may fail if domain is not active), or VIR_DOMAIN_AFFECT_CONFIG to affect the next boot via the XML description of the domain. Both flags may be set. If neither flag is specified (that is, @flags is VIR_DOMAIN_AFFECT_CURRENT), then an inactive domain modifies persistent setup, while an active domain is hypervisor-dependent on whether just live or both live and persistent state is changed.

Note that if this call is executed before the guest has finished booting, the guest may fail to process the change.

If @flags includes VIR_DOMAIN_VCPU_MAXIMUM, then VIR_DOMAIN_AFFECT_LIVE must be clear, and only the maximum virtual CPU limit is altered; generally, this value must be less than or equal to virConnectGetMaxVcpus(). Otherwise, this call affects the current virtual CPU limit, which must be less than or equal to the maximum limit.

If @flags includes VIR_DOMAIN_VCPU_GUEST, then the state of processors is modified inside the guest instead of the hypervisor. This flag can only be used with live guests and is incompatible with VIR_DOMAIN_VCPU_MAXIMUM. The usage of this flag may require a guest agent configured.

Not all hypervisors can support all flag combinations.

domain
  pointer to domain object, or NULL for Domain0
nvcpus
  the new number of virtual CPUs for this domain, must be at least 1
flags
  bitwise-OR of virDomainVcpuFlags
Returns
  0 in case of success, -1 in case of failure.

### `virDomainShutdown`

    int	virDomainShutdown		(virDomainPtr domain)

Shutdown a domain, the domain object is still usable thereafter, but the domain OS is being stopped. Note that the guest OS may ignore the request. Additionally, the hypervisor may check and support the domain 'on_poweroff' XML setting resulting in a domain that reboots instead of shutting down. For guests that react to a shutdown request, the differences from virDomainDestroy() are that the guests disk storage will be in a stable state rather than having the (virtual) power cord pulled, and this command returns as soon as the shutdown request is issued rather than blocking until the guest is no longer running.

If the domain is transient and has any snapshot metadata (see virDomainSnapshotNum()), then that metadata will automatically be deleted when the domain quits.

domain
  a domain object
Returns
  0 in case of success and -1 in case of failure.

### `virDomainShutdownFlags`

    int	virDomainShutdownFlags		(virDomainPtr domain,
    					 unsigned int flags)

Shutdown a domain, the domain object is still usable thereafter but the domain OS is being stopped. Note that the guest OS may ignore the request. Additionally, the hypervisor may check and support the domain 'on_poweroff' XML setting resulting in a domain that reboots instead of shutting down. For guests that react to a shutdown request, the differences from virDomainDestroy() are that the guest's disk storage will be in a stable state rather than having the (virtual) power cord pulled, and this command returns as soon as the shutdown request is issued rather than blocking until the guest is no longer running.

If the domain is transient and has any snapshot metadata (see virDomainSnapshotNum()), then that metadata will automatically be deleted when the domain quits.

If @flags is set to zero, then the hypervisor will choose the method of shutdown it considers best. To have greater control pass one or more of the virDomainShutdownFlagValues. The order in which the hypervisor tries each shutdown method is undefined, and a hypervisor is not required to support all methods.

To use guest agent (VIR_DOMAIN_SHUTDOWN_GUEST_AGENT) the domain XML must have <channel> configured.

domain
  a domain object
flags
  bitwise-OR of virDomainShutdownFlagValues
Returns
  0 in case of success and -1 in case of failure.

### `virDomainSnapshotCreateXML`

    virDomainSnapshotPtr	virDomainSnapshotCreateXML	(virDomainPtr domain,
    							 const char * xmlDesc,
    							 unsigned int flags)

Creates a new snapshot of a domain based on the snapshot xml contained in xmlDesc.

If @flags is 0, the domain can be active, in which case the snapshot will be a system checkpoint (both disk state and runtime VM state such as RAM contents), where reverting to the snapshot is the same as resuming from hibernation (TCP connections may have timed out, but everything else picks up where it left off); or the domain can be inactive, in which case the snapshot includes just the disk state prior to booting. The newly created snapshot becomes current (see virDomainSnapshotCurrent()), and is a child of any previous current snapshot.

If @flags includes VIR_DOMAIN_SNAPSHOT_CREATE_REDEFINE, then this is a request to reinstate snapshot metadata that was previously discarded, rather than creating a new snapshot. This can be used to recreate a snapshot hierarchy on a destination, then remove it on the source, in order to allow migration (since migration normally fails if snapshot metadata still remains on the source machine). When redefining snapshot metadata, the current snapshot will not be altered unless the VIR_DOMAIN_SNAPSHOT_CREATE_CURRENT flag is also present. It is an error to request the VIR_DOMAIN_SNAPSHOT_CREATE_CURRENT flag without VIR_DOMAIN_SNAPSHOT_CREATE_REDEFINE. On some hypervisors, redefining an existing snapshot can be used to alter host-specific portions of the domain XML to be used during revert (such as backing filenames associated with disk devices), but must not alter guest-visible layout. When redefining a snapshot name that does not exist, the hypervisor may validate that reverting to the snapshot appears to be possible (for example, disk images have snapshot contents by the requested name). Not all hypervisors support these flags.

If @flags includes VIR_DOMAIN_SNAPSHOT_CREATE_NO_METADATA, then the domain's disk images are modified according to @xmlDesc, but then the just-created snapshot has its metadata deleted. This flag is incompatible with VIR_DOMAIN_SNAPSHOT_CREATE_REDEFINE.

If @flags includes VIR_DOMAIN_SNAPSHOT_CREATE_HALT, then the domain will be inactive after the snapshot completes, regardless of whether it was active before; otherwise, a running domain will still be running after the snapshot. This flag is invalid on transient domains, and is incompatible with VIR_DOMAIN_SNAPSHOT_CREATE_REDEFINE.

If @flags includes VIR_DOMAIN_SNAPSHOT_CREATE_LIVE, then the domain is not paused while creating the snapshot. This increases the size of the memory dump file, but reduces downtime of the guest while taking the snapshot. Some hypervisors only support this flag during external checkpoints.

If @flags includes VIR_DOMAIN_SNAPSHOT_CREATE_DISK_ONLY, then the snapshot will be limited to the disks described in @xmlDesc, and no VM state will be saved. For an active guest, the disk image may be inconsistent (as if power had been pulled), and specifying this with the VIR_DOMAIN_SNAPSHOT_CREATE_HALT flag risks data loss.

If @flags includes VIR_DOMAIN_SNAPSHOT_CREATE_QUIESCE, then the libvirt will attempt to use guest agent to freeze and thaw all file systems in use within domain OS. However, if the guest agent is not present, an error is thrown. Moreover, this flag requires VIR_DOMAIN_SNAPSHOT_CREATE_DISK_ONLY to be passed as well.

By default, if the snapshot involves external files, and any of the destination files already exist as a non-empty regular file, the snapshot is rejected to avoid losing contents of those files. However, if @flags includes VIR_DOMAIN_SNAPSHOT_CREATE_REUSE_EXT, then the destination files must be pre-created manually with the correct image format and metadata including backing store path (this allows a management app to pre-create files with relative backing file names, rather than the default of creating with absolute backing file names). Note that setting incorrect metadata in the pre-created image may lead to the VM being unable to start.

Be aware that although libvirt prefers to report errors up front with no other effect, some hypervisors have certain types of failures where the overall command can easily fail even though the guest configuration was partially altered (for example, if a disk snapshot request for two disks fails on the second disk, but the first disk alteration cannot be rolled back). If this API call fails, it is therefore normally necessary to follow up with virDomainGetXMLDesc() and check each disk to determine if any partial changes occurred. However, if @flags contains VIR_DOMAIN_SNAPSHOT_CREATE_ATOMIC, then libvirt guarantees that this command will not alter any disks unless the entire set of changes can be done atomically, making failure recovery simpler (note that it is still possible to fail after disks have changed, but only in the much rarer cases of running out of memory or disk space).

Some hypervisors may prevent this operation if there is a current block copy operation; in that case, use virDomainBlockJobAbort() to stop the block copy first.

virDomainSnapshotFree should be used to free the resources after the snapshot object is no longer needed.

domain
  a domain object
xmlDesc
  string containing an XML description of the domain
flags
  bitwise-OR of virDomainSnapshotCreateFlags
Returns
  an (opaque) virDomainSnapshotPtr on success, NULL on failure.

### `virDomainSnapshotCurrent`

    virDomainSnapshotPtr	virDomainSnapshotCurrent	(virDomainPtr domain,
    							 unsigned int flags)

Get the current snapshot for a domain, if any.

virDomainSnapshotFree should be used to free the resources after the snapshot object is no longer needed.

domain
  a domain object
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  a domain snapshot object or NULL in case of failure. If the current domain snapshot cannot be found, then the VIR_ERR_NO_DOMAIN_SNAPSHOT error is raised.

### `virDomainSnapshotDelete`

    int	virDomainSnapshotDelete		(virDomainSnapshotPtr snapshot,
    					 unsigned int flags)

Delete the snapshot.

If @flags is 0, then just this snapshot is deleted, and changes from this snapshot are automatically merged into children snapshots. If @flags includes VIR_DOMAIN_SNAPSHOT_DELETE_CHILDREN, then this snapshot and any descendant snapshots are deleted. If @flags includes VIR_DOMAIN_SNAPSHOT_DELETE_CHILDREN_ONLY, then any descendant snapshots are deleted, but this snapshot remains. These two flags are mutually exclusive.

If @flags includes VIR_DOMAIN_SNAPSHOT_DELETE_METADATA_ONLY, then any snapshot metadata tracked by libvirt is removed while keeping the snapshot contents intact; if a hypervisor does not require any libvirt metadata to track snapshots, then this flag is silently ignored.

snapshot
  a domain snapshot object
flags
  bitwise-OR of supported virDomainSnapshotDeleteFlags
Returns
  0 if the selected snapshot(s) were successfully deleted, -1 on error.

### `virDomainSnapshotFree`

    int	virDomainSnapshotFree		(virDomainSnapshotPtr snapshot)

Free the domain snapshot object. The snapshot itself is not modified. The data structure is freed and should not be used thereafter.

snapshot
  a domain snapshot object
Returns
  0 in case of success and -1 in case of failure.

### `virDomainSnapshotGetConnect`

    virConnectPtr	virDomainSnapshotGetConnect	(virDomainSnapshotPtr snapshot)

Provides the connection pointer associated with a snapshot. The reference counter on the connection is not increased by this call.

WARNING: When writing libvirt bindings in other languages, do not use this function. Instead, store the connection and the snapshot object together.

snapshot
  a snapshot object
Returns
  the connection or NULL.

### `virDomainSnapshotGetDomain`

    virDomainPtr	virDomainSnapshotGetDomain	(virDomainSnapshotPtr snapshot)

Provides the domain pointer associated with a snapshot. The reference counter on the domain is not increased by this call.

WARNING: When writing libvirt bindings in other languages, do not use this function. Instead, store the domain and the snapshot object together.

snapshot
  a snapshot object
Returns
  the domain or NULL.

### `virDomainSnapshotGetName`

    const char *	virDomainSnapshotGetName	(virDomainSnapshotPtr snapshot)

Get the public name for that snapshot

snapshot
  a snapshot object
Returns
  a pointer to the name or NULL, the string need not be deallocated as its lifetime will be the same as the snapshot object.

### `virDomainSnapshotGetParent`

    virDomainSnapshotPtr	virDomainSnapshotGetParent	(virDomainSnapshotPtr snapshot,
    							 unsigned int flags)

Get the parent snapshot for @snapshot, if any.

virDomainSnapshotFree should be used to free the resources after the snapshot object is no longer needed.

snapshot
  a snapshot object
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  a domain snapshot object or NULL in case of failure. If the given snapshot is a root (no parent), then the VIR_ERR_NO_DOMAIN_SNAPSHOT error is raised.

### `virDomainSnapshotGetXMLDesc`

    char *	virDomainSnapshotGetXMLDesc	(virDomainSnapshotPtr snapshot,
    					 unsigned int flags)

Provide an XML description of the domain snapshot.

No security-sensitive data will be included unless @flags contains VIR_DOMAIN_XML_SECURE; this flag is rejected on read-only connections. For this API, @flags should not contain either VIR_DOMAIN_XML_INACTIVE or VIR_DOMAIN_XML_UPDATE_CPU.

snapshot
  a domain snapshot object
flags
  bitwise-OR of subset of virDomainXMLFlags
Returns
  a 0 terminated UTF-8 encoded XML instance, or NULL in case of error. the caller must free() the returned value.

### `virDomainSnapshotHasMetadata`

    int	virDomainSnapshotHasMetadata	(virDomainSnapshotPtr snapshot,
    					 unsigned int flags)

Determine if the given snapshot is associated with libvirt metadata that would prevent the deletion of the domain.

snapshot
  a snapshot object
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  1 if the snapshot has metadata, 0 if the snapshot exists without help from libvirt, or -1 on error.

### `virDomainSnapshotIsCurrent`

    int	virDomainSnapshotIsCurrent	(virDomainSnapshotPtr snapshot,
    					 unsigned int flags)

Determine if the given snapshot is the domain's current snapshot. See also virDomainHasCurrentSnapshot().

snapshot
  a snapshot object
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  1 if current, 0 if not current, or -1 on error.

### `virDomainSnapshotListAllChildren`

    int	virDomainSnapshotListAllChildren	(virDomainSnapshotPtr snapshot,
    						 virDomainSnapshotPtr ** snaps,
    						 unsigned int flags)

Collect the list of domain snapshots that are children of the given snapshot, and allocate an array to store those objects. This API solves the race inherent in virDomainSnapshotListChildrenNames().

By default, this command covers only direct children; it is also possible to expand things to cover all descendants, when @flags includes VIR_DOMAIN_SNAPSHOT_LIST_DESCENDANTS. Also, some filters are provided in groups, where each group contains bits that describe mutually exclusive attributes of a snapshot, and where all bits within a group describe all possible snapshots. Some hypervisors might reject explicit bits from a group where the hypervisor cannot make a distinction. For a group supported by a given hypervisor, the behavior when no bits of a group are set is identical to the behavior when all bits in that group are set. When setting bits from more than one group, it is possible to select an impossible combination, in that case a hypervisor may return either 0 or an error.

The first group of @flags is VIR_DOMAIN_SNAPSHOT_LIST_LEAVES and VIR_DOMAIN_SNAPSHOT_LIST_NO_LEAVES, to filter based on snapshots that have no further children (a leaf snapshot).

The next group of @flags is VIR_DOMAIN_SNAPSHOT_LIST_METADATA and VIR_DOMAIN_SNAPSHOT_LIST_NO_METADATA, for filtering snapshots based on whether they have metadata that would prevent the removal of the last reference to a domain.

The next group of @flags is VIR_DOMAIN_SNAPSHOT_LIST_INACTIVE, VIR_DOMAIN_SNAPSHOT_LIST_ACTIVE, and VIR_DOMAIN_SNAPSHOT_LIST_DISK_ONLY, for filtering snapshots based on what domain state is tracked by the snapshot.

The next group of @flags is VIR_DOMAIN_SNAPSHOT_LIST_INTERNAL and VIR_DOMAIN_SNAPSHOT_LIST_EXTERNAL, for filtering snapshots based on whether the snapshot is stored inside the disk images or as additional files.

snapshot
  a domain snapshot object
snaps
  pointer to variable to store the array containing snapshot objects, or NULL if the list is not required (just returns number of snapshots)
flags
  bitwise-OR of supported virDomainSnapshotListFlags
Returns
  the number of domain snapshots found or -1 and sets @snaps to NULL in case of error. On success, the array stored into @snaps is guaranteed to have an extra allocated element set to NULL but not included in the return count, to make iteration easier. The caller is responsible for calling virDomainSnapshotFree() on each array element, then calling free() on @snaps.

### `virDomainSnapshotListChildrenNames`

    int	virDomainSnapshotListChildrenNames	(virDomainSnapshotPtr snapshot,
    						 char ** names,
    						 int nameslen,
    						 unsigned int flags)

Collect the list of domain snapshots that are children of the given snapshot, and store their names in @names. The value to use for @nameslen can be determined by virDomainSnapshotNumChildren() with the same @flags.

By default, this command covers only direct children; it is also possible to expand things to cover all descendants, when @flags includes VIR_DOMAIN_SNAPSHOT_LIST_DESCENDANTS. Also, some filters are provided in groups, where each group contains bits that describe mutually exclusive attributes of a snapshot, and where all bits within a group describe all possible snapshots. Some hypervisors might reject explicit bits from a group where the hypervisor cannot make a distinction. For a group supported by a given hypervisor, the behavior when no bits of a group are set is identical to the behavior when all bits in that group are set. When setting bits from more than one group, it is possible to select an impossible combination, in that case a hypervisor may return either 0 or an error.

The first group of @flags is VIR_DOMAIN_SNAPSHOT_LIST_LEAVES and VIR_DOMAIN_SNAPSHOT_LIST_NO_LEAVES, to filter based on snapshots that have no further children (a leaf snapshot).

The next group of @flags is VIR_DOMAIN_SNAPSHOT_LIST_METADATA and VIR_DOMAIN_SNAPSHOT_LIST_NO_METADATA, for filtering snapshots based on whether they have metadata that would prevent the removal of the last reference to a domain.

The next group of @flags is VIR_DOMAIN_SNAPSHOT_LIST_INACTIVE, VIR_DOMAIN_SNAPSHOT_LIST_ACTIVE, and VIR_DOMAIN_SNAPSHOT_LIST_DISK_ONLY, for filtering snapshots based on what domain state is tracked by the snapshot.

The next group of @flags is VIR_DOMAIN_SNAPSHOT_LIST_INTERNAL and VIR_DOMAIN_SNAPSHOT_LIST_EXTERNAL, for filtering snapshots based on whether the snapshot is stored inside the disk images or as additional files.

snapshot
  a domain snapshot object
names
  array to collect the list of names of snapshots
nameslen
  size of @names
flags
  bitwise-OR of supported virDomainSnapshotListFlags
Returns
  the number of domain snapshots found or -1 in case of error. Note that this command is inherently racy: another connection can define a new snapshot between a call to virDomainSnapshotNumChildren() and this call. You are only guaranteed that all currently defined snapshots were listed if the return is less than @nameslen. Likewise, you should be prepared for virDomainSnapshotLookupByName() to fail when converting a name from this call into a snapshot object, if another connection deletes the snapshot in the meantime. For more control over the results, see virDomainSnapshotListAllChildren(). Returns the number of domain snapshots found or -1 in case of error. The caller is responsible to call free() for each member of the array.

### `virDomainSnapshotListNames`

    int	virDomainSnapshotListNames	(virDomainPtr domain,
    					 char ** names,
    					 int nameslen,
    					 unsigned int flags)

Collect the list of domain snapshots for the given domain, and store their names in @names. The value to use for @nameslen can be determined by virDomainSnapshotNum() with the same @flags.

By default, this command covers all snapshots; it is also possible to limit things to just snapshots with no parents, when @flags includes VIR_DOMAIN_SNAPSHOT_LIST_ROOTS. Additional filters are provided in groups, where each group contains bits that describe mutually exclusive attributes of a snapshot, and where all bits within a group describe all possible snapshots. Some hypervisors might reject explicit bits from a group where the hypervisor cannot make a distinction. For a group supported by a given hypervisor, the behavior when no bits of a group are set is identical to the behavior when all bits in that group are set. When setting bits from more than one group, it is possible to select an impossible combination, in that case a hypervisor may return either 0 or an error.

The first group of @flags is VIR_DOMAIN_SNAPSHOT_LIST_LEAVES and VIR_DOMAIN_SNAPSHOT_LIST_NO_LEAVES, to filter based on snapshots that have no further children (a leaf snapshot).

The next group of @flags is VIR_DOMAIN_SNAPSHOT_LIST_METADATA and VIR_DOMAIN_SNAPSHOT_LIST_NO_METADATA, for filtering snapshots based on whether they have metadata that would prevent the removal of the last reference to a domain.

The next group of @flags is VIR_DOMAIN_SNAPSHOT_LIST_INACTIVE, VIR_DOMAIN_SNAPSHOT_LIST_ACTIVE, and VIR_DOMAIN_SNAPSHOT_LIST_DISK_ONLY, for filtering snapshots based on what domain state is tracked by the snapshot.

The next group of @flags is VIR_DOMAIN_SNAPSHOT_LIST_INTERNAL and VIR_DOMAIN_SNAPSHOT_LIST_EXTERNAL, for filtering snapshots based on whether the snapshot is stored inside the disk images or as additional files.

Note that this command is inherently racy: another connection can define a new snapshot between a call to virDomainSnapshotNum() and this call. You are only guaranteed that all currently defined snapshots were listed if the return is less than @nameslen. Likewise, you should be prepared for virDomainSnapshotLookupByName() to fail when converting a name from this call into a snapshot object, if another connection deletes the snapshot in the meantime. For more control over the results, see virDomainListAllSnapshots().

domain
  a domain object
names
  array to collect the list of names of snapshots
nameslen
  size of @names
flags
  bitwise-OR of supported virDomainSnapshotListFlags
Returns
  the number of domain snapshots found or -1 in case of error. The caller is responsible to call free() for each member of the array.

### `virDomainSnapshotLookupByName`

    virDomainSnapshotPtr	virDomainSnapshotLookupByName	(virDomainPtr domain,
    							 const char * name,
    							 unsigned int flags)

Try to lookup a domain snapshot based on its name.

domain
  a domain object
name
  name for the domain snapshot
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  a domain snapshot object or NULL in case of failure. If the domain snapshot cannot be found, then the VIR_ERR_NO_DOMAIN_SNAPSHOT error is raised.

### `virDomainSnapshotNum`

    int	virDomainSnapshotNum		(virDomainPtr domain,
    					 unsigned int flags)

Provides the number of domain snapshots for this domain.

By default, this command covers all snapshots; it is also possible to limit things to just snapshots with no parents, when @flags includes VIR_DOMAIN_SNAPSHOT_LIST_ROOTS. Additional filters are provided in groups, where each group contains bits that describe mutually exclusive attributes of a snapshot, and where all bits within a group describe all possible snapshots. Some hypervisors might reject explicit bits from a group where the hypervisor cannot make a distinction. For a group supported by a given hypervisor, the behavior when no bits of a group are set is identical to the behavior when all bits in that group are set. When setting bits from more than one group, it is possible to select an impossible combination, in that case a hypervisor may return either 0 or an error.

The first group of @flags is VIR_DOMAIN_SNAPSHOT_LIST_LEAVES and VIR_DOMAIN_SNAPSHOT_LIST_NO_LEAVES, to filter based on snapshots that have no further children (a leaf snapshot).

The next group of @flags is VIR_DOMAIN_SNAPSHOT_LIST_METADATA and VIR_DOMAIN_SNAPSHOT_LIST_NO_METADATA, for filtering snapshots based on whether they have metadata that would prevent the removal of the last reference to a domain.

The next group of @flags is VIR_DOMAIN_SNAPSHOT_LIST_INACTIVE, VIR_DOMAIN_SNAPSHOT_LIST_ACTIVE, and VIR_DOMAIN_SNAPSHOT_LIST_DISK_ONLY, for filtering snapshots based on what domain state is tracked by the snapshot.

The next group of @flags is VIR_DOMAIN_SNAPSHOT_LIST_INTERNAL and VIR_DOMAIN_SNAPSHOT_LIST_EXTERNAL, for filtering snapshots based on whether the snapshot is stored inside the disk images or as additional files.

domain
  a domain object
flags
  bitwise-OR of supported virDomainSnapshotListFlags
Returns
  the number of domain snapshots found or -1 in case of error.

### `virDomainSnapshotNumChildren`

    int	virDomainSnapshotNumChildren	(virDomainSnapshotPtr snapshot,
    					 unsigned int flags)

Provides the number of child snapshots for this domain snapshot.

By default, this command covers only direct children; it is also possible to expand things to cover all descendants, when @flags includes VIR_DOMAIN_SNAPSHOT_LIST_DESCENDANTS. Also, some filters are provided in groups, where each group contains bits that describe mutually exclusive attributes of a snapshot, and where all bits within a group describe all possible snapshots. Some hypervisors might reject explicit bits from a group where the hypervisor cannot make a distinction. For a group supported by a given hypervisor, the behavior when no bits of a group are set is identical to the behavior when all bits in that group are set. When setting bits from more than one group, it is possible to select an impossible combination, in that case a hypervisor may return either 0 or an error.

The first group of @flags is VIR_DOMAIN_SNAPSHOT_LIST_LEAVES and VIR_DOMAIN_SNAPSHOT_LIST_NO_LEAVES, to filter based on snapshots that have no further children (a leaf snapshot).

The next group of @flags is VIR_DOMAIN_SNAPSHOT_LIST_METADATA and VIR_DOMAIN_SNAPSHOT_LIST_NO_METADATA, for filtering snapshots based on whether they have metadata that would prevent the removal of the last reference to a domain.

The next group of @flags is VIR_DOMAIN_SNAPSHOT_LIST_INACTIVE, VIR_DOMAIN_SNAPSHOT_LIST_ACTIVE, and VIR_DOMAIN_SNAPSHOT_LIST_DISK_ONLY, for filtering snapshots based on what domain state is tracked by the snapshot.

The next group of @flags is VIR_DOMAIN_SNAPSHOT_LIST_INTERNAL and VIR_DOMAIN_SNAPSHOT_LIST_EXTERNAL, for filtering snapshots based on whether the snapshot is stored inside the disk images or as additional files.

snapshot
  a domain snapshot object
flags
  bitwise-OR of supported virDomainSnapshotListFlags
Returns
  the number of domain snapshots found or -1 in case of error.

### `virDomainSnapshotRef`

    int	virDomainSnapshotRef		(virDomainSnapshotPtr snapshot)

Increment the reference count on the snapshot. For each additional call to this method, there shall be a corresponding call to virDomainSnapshotFree to release the reference count, once the caller no longer needs the reference to this object.

This method is typically useful for applications where multiple threads are using a connection, and it is required that the connection and domain remain open until all threads have finished using the snapshot. ie, each new thread using a snapshot would increment the reference count.

snapshot
  the snapshot to hold a reference on
Returns
  0 in case of success and -1 in case of failure.

### `virDomainStatsRecordListFree`

    void	virDomainStatsRecordListFree	(virDomainStatsRecordPtr * stats)

Convenience function to free a list of domain stats returned by virDomainListGetStats and virConnectGetAllDomainStats.

stats
  NULL terminated array of virDomainStatsRecords to free

### `virDomainSuspend`

    int	virDomainSuspend		(virDomainPtr domain)

Suspends an active domain, the process is frozen without further access to CPU resources and I/O but the memory used by the domain at the hypervisor level will stay allocated. Use virDomainResume() to reactivate the domain. This function may require privileged access. Moreover, suspend may not be supported if domain is in some special state like VIR_DOMAIN_PMSUSPENDED.

domain
  a domain object
Returns
  0 in case of success and -1 in case of failure.

### `virDomainUndefine`

    int	virDomainUndefine		(virDomainPtr domain)

Undefine a domain. If the domain is running, it's converted to transient domain, without stopping it. If the domain is inactive, the domain configuration is removed.

If the domain has a managed save image (see virDomainHasManagedSaveImage()), or if it is inactive and has any snapshot metadata (see virDomainSnapshotNum()), then the undefine will fail. See virDomainUndefineFlags() for more control.

domain
  pointer to a defined domain
Returns
  0 in case of success, -1 in case of error

### `virDomainUndefineFlags`

    int	virDomainUndefineFlags		(virDomainPtr domain,
    					 unsigned int flags)

Undefine a domain. If the domain is running, it's converted to transient domain, without stopping it. If the domain is inactive, the domain configuration is removed.

If the domain has a managed save image (see virDomainHasManagedSaveImage()), then including VIR_DOMAIN_UNDEFINE_MANAGED_SAVE in @flags will also remove that file, and omitting the flag will cause the undefine process to fail.

If the domain is inactive and has any snapshot metadata (see virDomainSnapshotNum()), then including VIR_DOMAIN_UNDEFINE_SNAPSHOTS_METADATA in @flags will also remove that metadata. Omitting the flag will cause the undefine of an inactive domain to fail. Active snapshots will retain snapshot metadata until the (now-transient) domain halts, regardless of whether this flag is present. On hypervisors where snapshots do not use libvirt metadata, this flag has no effect.

domain
  pointer to a defined domain
flags
  bitwise-OR of supported virDomainUndefineFlagsValues
Returns
  0 in case of success, -1 in case of error

### `virDomainUpdateDeviceFlags`

    int	virDomainUpdateDeviceFlags	(virDomainPtr domain,
    					 const char * xml,
    					 unsigned int flags)

Change a virtual device on a domain, using the flags parameter to control how the device is changed. VIR_DOMAIN_AFFECT_CURRENT specifies that the device change is made based on current domain state. VIR_DOMAIN_AFFECT_LIVE specifies that the device shall be changed on the active domain instance only and is not added to the persisted domain configuration. VIR_DOMAIN_AFFECT_CONFIG specifies that the device shall be changed on the persisted domain configuration only. Note that the target hypervisor must return an error if unable to satisfy flags. E.g. the hypervisor driver will return failure if LIVE is specified but it only supports modifying the persisted device allocation.

This method is used for actions such changing CDROM/Floppy device media, altering the graphics configuration such as password, reconfiguring the NIC device backend connectivity, etc.

domain
  pointer to domain object
xml
  pointer to XML description of one device
flags
  bitwise-OR of virDomainDeviceModifyFlags
Returns
  0 in case of success, -1 in case of failure.

### `virEventAddHandle`

    int	virEventAddHandle		(int fd,
    					 int events,
    					 virEventHandleCallback cb,
    					 void * opaque,
    					 virFreeCallback ff)

Register a callback for monitoring file handle events. This function requires that an event loop has previously been registered with virEventRegisterImpl() or virEventRegisterDefaultImpl().

fd
  file handle to monitor for events
events
  bitset of events to watch from virEventHandleType constants
cb
  callback to invoke when an event occurs
opaque
  user data to pass to callback
ff
  callback to free opaque when handle is removed
Returns
  -1 if the file handle cannot be registered, otherwise a handle watch number to be used for updating and unregistering for events.

### `virEventAddHandleFunc`

    typedef int	(*virEventAddHandleFunc	)	(int fd,
    					 int event,
    					 virEventHandleCallback cb,
    					 void * opaque,
    					 virFreeCallback ff)

Part of the EventImpl, this callback adds a file handle callback to listen for specific events. The same file handle can be registered multiple times provided the requested event sets are non-overlapping

If the opaque user data requires free'ing when the handle is unregistered, then a 2nd callback can be supplied for this purpose. This callback needs to be invoked from a clean stack. If 'ff' callbacks are invoked directly from the virEventRemoveHandleFunc they will likely deadlock in libvirt.

fd
  file descriptor to listen on
event
  bitset of events on which to fire the callback
cb
  the callback to be called when an event occurrs
opaque
  user data to pass to the callback
ff
  the callback invoked to free opaque data blob
Returns
  -1 if the file handle cannot be registered, otherwise a handle watch number to be used for updating and unregistering for events

### `virEventAddTimeout`

    int	virEventAddTimeout		(int timeout,
    					 virEventTimeoutCallback cb,
    					 void * opaque,
    					 virFreeCallback ff)

Register a callback for a timer event. This function requires that an event loop has previously been registered with virEventRegisterImpl() or virEventRegisterDefaultImpl().

Setting @timeout to -1 will disable the timer. Setting @timeout to zero will cause it to fire on every event loop iteration.

timeout
  time between events in milliseconds
cb
  callback to invoke when an event occurs
opaque
  user data to pass to callback
ff
  callback to free opaque when timeout is removed
Returns
  -1 if the timer cannot be registered, a positive integer timer id upon success.

### `virEventAddTimeoutFunc`

    typedef int	(*virEventAddTimeoutFunc	)	(int timeout,
    					 virEventTimeoutCallback cb,
    					 void * opaque,
    					 virFreeCallback ff)

Part of the EventImpl, this user-defined callback handles adding an event timeout.

If the opaque user data requires free'ing when the handle is unregistered, then a 2nd callback can be supplied for this purpose.

timeout
  The timeout to monitor
cb
  the callback to call when timeout has expired
opaque
  user data to pass to the callback
ff
  the callback invoked to free opaque data blob
Returns
  a timer value

### `virEventHandleCallback`

    typedef void	(*virEventHandleCallback	)	(int watch,
    					 int fd,
    					 int events,
    					 void * opaque)

Callback for receiving file handle events. The callback will be invoked once for each event which is pending.

watch
  watch on which the event occurred
fd
  file handle on which the event occurred
events
  bitset of events from virEventHandleType constants
opaque
  user data registered with handle

### `virEventRegisterDefaultImpl`

    int	virEventRegisterDefaultImpl	(void)

Registers a default event implementation based on the poll() system call. This is a generic implementation that can be used by any client application which does not have a need to integrate with an external event loop impl.

Once registered, the application has to invoke virEventRunDefaultImpl() in a loop to process events. Failure to do so may result in connections being closed unexpectedly as a result of keepalive timeout. The default event loop fully supports handle and timeout events, but only wakes up on events registered by libvirt API calls such as virEventAddHandle() or virConnectDomainEventRegisterAny().

Returns
  0 on success, -1 on failure.

### `virEventRegisterImpl`

    void	virEventRegisterImpl		(virEventAddHandleFunc addHandle,
    					 virEventUpdateHandleFunc updateHandle,
    					 virEventRemoveHandleFunc removeHandle,
    					 virEventAddTimeoutFunc addTimeout,
    					 virEventUpdateTimeoutFunc updateTimeout,
    					 virEventRemoveTimeoutFunc removeTimeout)

Registers an event implementation, to allow integration with an external event loop. Applications would use this to integrate with the libglib2 event loop, or libevent or the QT event loop.

Use of the virEventAddHandle() and similar APIs require that the corresponding handler is registered. Use of the virConnectDomainEventRegisterAny() and similar APIs requires that the three timeout handlers are registered. Likewise, the three timeout handlers must be registered if the remote server has been configured to send keepalive messages, or if the client intends to call virConnectSetKeepAlive(), to avoid either side from unexpectedly closing the connection due to inactivity.

If an application does not need to integrate with an existing event loop implementation, then the virEventRegisterDefaultImpl() method can be used to setup the generic libvirt implementation.

addHandle
  the callback to add fd handles
updateHandle
  the callback to update fd handles
removeHandle
  the callback to remove fd handles
addTimeout
  the callback to add a timeout
updateTimeout
  the callback to update a timeout
removeTimeout
  the callback to remove a timeout

### `virEventRemoveHandle`

    int	virEventRemoveHandle		(int watch)

Unregister a callback from a file handle. This function requires that an event loop has previously been registered with virEventRegisterImpl() or virEventRegisterDefaultImpl().

watch
  watch whose file handle to remove
Returns
  -1 if the file handle was not registered, 0 upon success.

### `virEventRemoveHandleFunc`

    typedef int	(*virEventRemoveHandleFunc)	(int watch)

Part of the EventImpl, this user-provided callback is notified when an fd is no longer being listened on.

If a virEventHandleFreeFunc was supplied when the handle was registered, it will be invoked some time during, or after this function call, when it is safe to release the user data.

watch
  file descriptor watch to stop listening on
Returns
  -1 if the file handle was not registered, 0 upon success

### `virEventRemoveTimeout`

    int	virEventRemoveTimeout		(int timer)

Unregister a callback for a timer. This function requires that an event loop has previously been registered with virEventRegisterImpl() or virEventRegisterDefaultImpl().

timer
  the timer id to remove
Returns
  -1 if the timer was not registered, 0 upon success.

### `virEventRemoveTimeoutFunc`

    typedef int	(*virEventRemoveTimeoutFunc)	(int timer)

Part of the EventImpl, this user-defined callback removes a timer

If a virEventTimeoutFreeFunc was supplied when the handle was registered, it will be invoked some time during, or after this function call, when it is safe to release the user data.

timer
  the timer to remove
Returns
  0 on success, -1 on failure

### `virEventRunDefaultImpl`

    int	virEventRunDefaultImpl		(void)

Run one iteration of the event loop. Applications will generally want to have a thread which invokes this method in an infinite loop. Furthermore, it is wise to set up a pipe-to-self handler (via virEventAddHandle()) or a timeout (via virEventAddTimeout()) before calling this function, as it will block forever if there are no registered events.

    static bool quit = false;

    while (!quit) {
      if (virEventRunDefaultImpl() < 0)
        ...print error...
    }

Returns
  0 on success, -1 on failure.

### `virEventTimeoutCallback`

    typedef void	(*virEventTimeoutCallback	)	(int timer,
    					 void * opaque)

callback for receiving timer events

timer
  timer id emitting the event
opaque
  user data registered with handle

### `virEventUpdateHandle`

    void	virEventUpdateHandle		(int watch,
    					 int events)

Change event set for a monitored file handle. This function requires that an event loop has previously been registered with virEventRegisterImpl() or virEventRegisterDefaultImpl().

Will not fail if fd exists.

watch
  watch whose file handle to update
events
  bitset of events to watch from virEventHandleType constants

### `virEventUpdateHandleFunc`

    typedef void	(*virEventUpdateHandleFunc)	(int watch,
    					 int event)

Part of the EventImpl, this user-provided callback is notified when events to listen on change

watch
  file descriptor watch to modify
event
  new events to listen on

### `virEventUpdateTimeout`

    void	virEventUpdateTimeout		(int timer,
    					 int timeout)

Change frequency for a timer. This function requires that an event loop has previously been registered with virEventRegisterImpl() or virEventRegisterDefaultImpl().

Setting frequency to -1 will disable the timer. Setting the frequency to zero will cause it to fire on every event loop iteration.

Will not fail if timer exists.

timer
  timer id to change
timeout
  time between events in milliseconds

### `virEventUpdateTimeoutFunc`

    typedef void	(*virEventUpdateTimeoutFunc)	(int timer,
    					 int timeout)

Part of the EventImpl, this user-defined callback updates an event timeout.

timer
  the timer to modify
timeout
  the new timeout value

### `virFreeCallback`

    typedef void	(*virFreeCallback		)	(void * opaque)

Type for a callback cleanup function to be paired with a callback. This function will be called as a final chance to clean up the @opaque registered with the primary callback, at the time when the primary callback is deregistered.

It is forbidden to call any other libvirt APIs from an implementation of this callback, since it can be invoked from a context which is not re-entrant safe. Failure to abide by this requirement may lead to application deadlocks or crashes.

opaque
  opaque user data provided at registration

### `virGetVersion`

    int	virGetVersion			(unsigned long * libVer,
    					 const char * type,
    					 unsigned long * typeVer)

Provides version information. @libVer is the version of the library and will always be set unless an error occurs, in which case an error code will be returned. @typeVer exists for historical compatibility; if it is not NULL it will duplicate @libVer (it was originally intended to return hypervisor information based on @type, but due to the design of remote clients this is not reliable). To get the version of the running hypervisor use the virConnectGetVersion() function instead. To get the libvirt library version used by a connection use the virConnectGetLibVersion() instead.

This function includes a call to virInitialize() when necessary.

libVer
  return value for the library version (OUT)
type
  ignored; pass NULL
typeVer
  pass NULL; for historical purposes duplicates @libVer if non-NULL
Returns
  -1 in case of failure, 0 otherwise, and values for @libVer and @typeVer have the format major * 1,000,000 + minor * 1,000 + release.

### `virInitialize`

    int	virInitialize			(void)

Initialize the library.

This method is invoked automatically by any of the virConnectOpen() API calls, and by virGetVersion(). Since release 1.0.0, there is no need to call this method even in a multithreaded application, since initialization is performed in a thread safe manner; but applications using an older version of the library should manually call this before setting up competing threads that attempt virConnectOpen in parallel.

The only other time it would be necessary to call virInitialize is if the application did not invoke virConnectOpen as its first API call, such as when calling virEventRegisterImpl() before setting up connections, or when using virSetErrorFunc() to alter error reporting of the first connection attempt.

Returns
  0 in case of success, -1 in case of error

### `virInterfaceChangeBegin`

    int	virInterfaceChangeBegin		(virConnectPtr conn,
    					 unsigned int flags)

This function creates a restore point to which one can return later by calling virInterfaceChangeRollback(). This function should be called before any transaction with interface configuration. Once it is known that a new configuration works, it can be committed via virInterfaceChangeCommit(), which frees the restore point.

If virInterfaceChangeBegin() is called when a transaction is already opened, this function will fail, and a VIR_ERR_INVALID_OPERATION will be logged.

conn
  pointer to hypervisor connection
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  0 in case of success and -1 in case of failure.

### `virInterfaceChangeCommit`

    int	virInterfaceChangeCommit	(virConnectPtr conn,
    					 unsigned int flags)

This commits the changes made to interfaces and frees the restore point created by virInterfaceChangeBegin().

If virInterfaceChangeCommit() is called when a transaction is not opened, this function will fail, and a VIR_ERR_INVALID_OPERATION will be logged.

conn
  pointer to hypervisor connection
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  0 in case of success and -1 in case of failure.

### `virInterfaceChangeRollback`

    int	virInterfaceChangeRollback	(virConnectPtr conn,
    					 unsigned int flags)

This cancels changes made to interfaces settings by restoring previous state created by virInterfaceChangeBegin().

If virInterfaceChangeRollback() is called when a transaction is not opened, this function will fail, and a VIR_ERR_INVALID_OPERATION will be logged.

conn
  pointer to hypervisor connection
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  0 in case of success and -1 in case of failure.

### `virInterfaceCreate`

    int	virInterfaceCreate		(virInterfacePtr iface,
    					 unsigned int flags)

Activate an interface (i.e. call "ifup").

If there was an open network config transaction at the time this interface was defined (that is, if virInterfaceChangeBegin() had been called), the interface will be brought back down (and then undefined) if virInterfaceChangeRollback() is called.

iface
  pointer to a defined interface
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  0 in case of success, -1 in case of error

### `virInterfaceDefineXML`

    virInterfacePtr	virInterfaceDefineXML	(virConnectPtr conn,
    					 const char * xml,
    					 unsigned int flags)

Define an interface (or modify existing interface configuration).

Normally this change in the interface configuration is immediately permanent/persistent, but if virInterfaceChangeBegin() has been previously called (i.e. if an interface config transaction is open), the new interface definition will only become permanent if virInterfaceChangeCommit() is called prior to the next reboot of the system running libvirtd. Prior to that time, it can be explicitly removed using virInterfaceChangeRollback(), or will be automatically removed during the next reboot of the system running libvirtd.

virInterfaceFree should be used to free the resources after the interface object is no longer needed.

conn
  pointer to the hypervisor connection
xml
  the XML description for the interface, preferably in UTF-8
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  NULL in case of error, a pointer to the interface otherwise

### `virInterfaceDestroy`

    int	virInterfaceDestroy		(virInterfacePtr iface,
    					 unsigned int flags)

deactivate an interface (ie call "ifdown") This does not remove the interface from the config, and does not free the associated virInterfacePtr object.

If there is an open network config transaction at the time this interface is destroyed (that is, if virInterfaceChangeBegin() had been called), and if the interface is later undefined and then virInterfaceChangeRollback() is called, the restoral of the interface definition will also bring the interface back up.

iface
  an interface object
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  0 in case of success and -1 in case of failure.

### `virInterfaceFree`

    int	virInterfaceFree		(virInterfacePtr iface)

Free the interface object. The interface itself is unaltered. The data structure is freed and should not be used thereafter.

iface
  an interface object
Returns
  0 in case of success and -1 in case of failure.

### `virInterfaceGetConnect`

    virConnectPtr	virInterfaceGetConnect	(virInterfacePtr iface)

Provides the connection pointer associated with an interface. The reference counter on the connection is not increased by this call.

WARNING: When writing libvirt bindings in other languages, do not use this function. Instead, store the connection and the interface object together.

iface
  pointer to an interface
Returns
  the virConnectPtr or NULL in case of failure.

### `virInterfaceGetMACString`

    const char *	virInterfaceGetMACString	(virInterfacePtr iface)

Get the MAC for an interface as string. For more information about MAC see RFC4122.

iface
  an interface object
Returns
  a pointer to the MAC address (in null-terminated ASCII format) or NULL, the string need not be deallocated its lifetime will be the same as the interface object.

### `virInterfaceGetName`

    const char *	virInterfaceGetName	(virInterfacePtr iface)

Get the public name for that interface

iface
  an interface object
Returns
  a pointer to the name or NULL, the string need not be deallocated its lifetime will be the same as the interface object.

### `virInterfaceGetXMLDesc`

    char *	virInterfaceGetXMLDesc		(virInterfacePtr iface,
    					 unsigned int flags)

VIR_INTERFACE_XML_INACTIVE - return the static configuration, suitable for use redefining the interface via virInterfaceDefineXML()

Provide an XML description of the interface. If VIR_INTERFACE_XML_INACTIVE is set, the description may be reused later to redefine the interface with virInterfaceDefineXML(). If it is not set, the ip address and netmask will be the current live setting of the interface, not the settings from the config files.

iface
  an interface object
flags
  bitwise-OR of extraction flags. Current valid bits:
Returns
  a 0 terminated UTF-8 encoded XML instance, or NULL in case of error. the caller must free() the returned value.

### `virInterfaceIsActive`

    int	virInterfaceIsActive		(virInterfacePtr iface)

Determine if the interface is currently running

iface
  pointer to the interface object
Returns
  1 if running, 0 if inactive, -1 on error

### `virInterfaceLookupByMACString`

    virInterfacePtr	virInterfaceLookupByMACString	(virConnectPtr conn,
    						 const char * macstr)

Try to lookup an interface on the given hypervisor based on its MAC.

virInterfaceFree should be used to free the resources after the interface object is no longer needed.

conn
  pointer to the hypervisor connection
macstr
  the MAC for the interface (null-terminated ASCII format)
Returns
  a new interface object or NULL in case of failure. If the interface cannot be found, then VIR_ERR_NO_INTERFACE error is raised.

### `virInterfaceLookupByName`

    virInterfacePtr	virInterfaceLookupByName	(virConnectPtr conn,
    						 const char * name)

Try to lookup an interface on the given hypervisor based on its name.

virInterfaceFree should be used to free the resources after the interface object is no longer needed.

conn
  pointer to the hypervisor connection
name
  name for the interface
Returns
  a new interface object or NULL in case of failure. If the interface cannot be found, then VIR_ERR_NO_INTERFACE error is raised.

### `virInterfaceRef`

    int	virInterfaceRef			(virInterfacePtr iface)

Increment the reference count on the interface. For each additional call to this method, there shall be a corresponding call to virInterfaceFree to release the reference count, once the caller no longer needs the reference to this object.

This method is typically useful for applications where multiple threads are using a connection, and it is required that the connection remain open until all threads have finished using it. ie, each new thread using an interface would increment the reference count.

iface
  the interface to hold a reference on
Returns
  0 in case of success, -1 in case of failure.

### `virInterfaceUndefine`

    int	virInterfaceUndefine		(virInterfacePtr iface)

Undefine an interface, ie remove it from the config. This does not free the associated virInterfacePtr object.

Normally this change in the interface configuration is permanent/persistent, but if virInterfaceChangeBegin() has been previously called (i.e. if an interface config transaction is open), the removal of the interface definition will only become permanent if virInterfaceChangeCommit() is called prior to the next reboot of the system running libvirtd. Prior to that time, the definition can be explicitly restored using virInterfaceChangeRollback(), or will be automatically restored during the next reboot of the system running libvirtd.

iface
  pointer to a defined interface
Returns
  0 in case of success, -1 in case of error

### `virNWFilterDefineXML`

    virNWFilterPtr	virNWFilterDefineXML	(virConnectPtr conn,
    					 const char * xmlDesc)

Define a new network filter, based on an XML description similar to the one returned by virNWFilterGetXMLDesc()

virNWFilterFree should be used to free the resources after the nwfilter object is no longer needed.

conn
  pointer to the hypervisor connection
xmlDesc
  an XML description of the nwfilter
Returns
  a new nwfilter object or NULL in case of failure

### `virNWFilterFree`

    int	virNWFilterFree			(virNWFilterPtr nwfilter)

Free the nwfilter object. The running instance is kept alive. The data structure is freed and should not be used thereafter.

nwfilter
  a nwfilter object
Returns
  0 in case of success and -1 in case of failure.

### `virNWFilterGetName`

    const char *	virNWFilterGetName	(virNWFilterPtr nwfilter)

Get the public name for the network filter

nwfilter
  a nwfilter object
Returns
  a pointer to the name or NULL, the string need not be deallocated its lifetime will be the same as the nwfilter object.

### `virNWFilterGetUUID`

    int	virNWFilterGetUUID		(virNWFilterPtr nwfilter,
    					 unsigned char * uuid)

Get the UUID for a network filter

nwfilter
  a nwfilter object
uuid
  pointer to a VIR_UUID_BUFLEN bytes array
Returns
  -1 in case of error, 0 in case of success

### `virNWFilterGetUUIDString`

    int	virNWFilterGetUUIDString	(virNWFilterPtr nwfilter,
    					 char * buf)

Get the UUID for a network filter as string. For more information about UUID see RFC4122.

nwfilter
  a nwfilter object
buf
  pointer to a VIR_UUID_STRING_BUFLEN bytes array
Returns
  -1 in case of error, 0 in case of success

### `virNWFilterGetXMLDesc`

    char *	virNWFilterGetXMLDesc		(virNWFilterPtr nwfilter,
    					 unsigned int flags)

Provide an XML description of the network filter. The description may be reused later to redefine the network filter with virNWFilterCreateXML().

nwfilter
  a nwfilter object
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  a 0 terminated UTF-8 encoded XML instance, or NULL in case of error. the caller must free() the returned value.

### `virNWFilterLookupByName`

    virNWFilterPtr	virNWFilterLookupByName	(virConnectPtr conn,
    					 const char * name)

Try to lookup a network filter on the given hypervisor based on its name.

virNWFilterFree should be used to free the resources after the nwfilter object is no longer needed.

conn
  pointer to the hypervisor connection
name
  name for the network filter
Returns
  a new nwfilter object or NULL in case of failure. If the network filter cannot be found, then VIR_ERR_NO_NWFILTER error is raised.

### `virNWFilterLookupByUUID`

    virNWFilterPtr	virNWFilterLookupByUUID	(virConnectPtr conn,
    					 const unsigned char * uuid)

Try to lookup a network filter on the given hypervisor based on its UUID.

virNWFilterFree should be used to free the resources after the nwfilter object is no longer needed.

conn
  pointer to the hypervisor connection
uuid
  the raw UUID for the network filter
Returns
  a new nwfilter object or NULL in case of failure. If the nwfdilter cannot be found, then VIR_ERR_NO_NWFILTER error is raised.

### `virNWFilterLookupByUUIDString`

    virNWFilterPtr	virNWFilterLookupByUUIDString	(virConnectPtr conn,
    						 const char * uuidstr)

Try to lookup an nwfilter on the given hypervisor based on its UUID.

virNWFilterFree should be used to free the resources after the nwfilter object is no longer needed.

conn
  pointer to the hypervisor connection
uuidstr
  the string UUID for the nwfilter
Returns
  a new nwfilter object or NULL in case of failure. If the nwfilter cannot be found, then VIR_ERR_NO_NWFILTER error is raised.

### `virNWFilterRef`

    int	virNWFilterRef			(virNWFilterPtr nwfilter)

Increment the reference count on the nwfilter. For each additional call to this method, there shall be a corresponding call to virNWFilterFree to release the reference count, once the caller no longer needs the reference to this object.

This method is typically useful for applications where multiple threads are using a connection, and it is required that the connection remain open until all threads have finished using it. ie, each new thread using an nwfilter would increment the reference count.

nwfilter
  the nwfilter to hold a reference on
Returns
  0 in case of success, -1 in case of failure.

### `virNWFilterUndefine`

    int	virNWFilterUndefine		(virNWFilterPtr nwfilter)

Undefine the nwfilter object. This call will not succeed if a running VM is referencing the filter. This does not free the associated virNWFilterPtr object.

nwfilter
  a nwfilter object
Returns
  0 in case of success and -1 in case of failure.

### `virNetworkCreate`

    int	virNetworkCreate		(virNetworkPtr network)

Create and start a defined network. If the call succeed the network moves from the defined to the running networks pools.

network
  pointer to a defined network
Returns
  0 in case of success, -1 in case of error

### `virNetworkCreateXML`

    virNetworkPtr	virNetworkCreateXML	(virConnectPtr conn,
    					 const char * xmlDesc)

Create and start a new virtual network, based on an XML description similar to the one returned by virNetworkGetXMLDesc()

virNetworkFree should be used to free the resources after the network object is no longer needed.

conn
  pointer to the hypervisor connection
xmlDesc
  an XML description of the network
Returns
  a new network object or NULL in case of failure

### `virNetworkDHCPLeaseFree`

    void	virNetworkDHCPLeaseFree		(virNetworkDHCPLeasePtr lease)

Frees all the memory occupied by @lease.

lease
  pointer to a leases object

### `virNetworkDefineXML`

    virNetworkPtr	virNetworkDefineXML	(virConnectPtr conn,
    					 const char * xml)

Define a network, but does not create it

virNetworkFree should be used to free the resources after the network object is no longer needed.

conn
  pointer to the hypervisor connection
xml
  the XML description for the network, preferably in UTF-8
Returns
  NULL in case of error, a pointer to the network otherwise

### `virNetworkDestroy`

    int	virNetworkDestroy		(virNetworkPtr network)

Destroy the network object. The running instance is shutdown if not down already and all resources used by it are given back to the hypervisor. This does not free the associated virNetworkPtr object. This function may require privileged access

network
  a network object
Returns
  0 in case of success and -1 in case of failure.

### `virNetworkFree`

    int	virNetworkFree			(virNetworkPtr network)

Free the network object. The running instance is kept alive. The data structure is freed and should not be used thereafter.

network
  a network object
Returns
  0 in case of success and -1 in case of failure.

### `virNetworkGetAutostart`

    int	virNetworkGetAutostart		(virNetworkPtr network,
    					 int * autostart)

Provides a boolean value indicating whether the network configured to be automatically started when the host machine boots.

network
  a network object
autostart
  the value returned
Returns
  -1 in case of error, 0 in case of success

### `virNetworkGetBridgeName`

    char *	virNetworkGetBridgeName		(virNetworkPtr network)

Provides a bridge interface name to which a domain may connect a network interface in order to join the network.

network
  a network object
Returns
  a 0 terminated interface name, or NULL in case of error. the caller must free() the returned value.

### `virNetworkGetConnect`

    virConnectPtr	virNetworkGetConnect	(virNetworkPtr net)

Provides the connection pointer associated with a network. The reference counter on the connection is not increased by this call.

WARNING: When writing libvirt bindings in other languages, do not use this function. Instead, store the connection and the network object together.

net
  pointer to a network
Returns
  the virConnectPtr or NULL in case of failure.

### `virNetworkGetDHCPLeases`

    int	virNetworkGetDHCPLeases		(virNetworkPtr network,
    					 const char * mac,
    					 virNetworkDHCPLeasePtr ** leases,
    					 unsigned int flags)

For DHCPv4, the information returned: - Network Interface Name - Expiry Time - MAC address - IAID (NULL) - IPv4 address (with type and prefix) - Hostname (can be NULL) - Client ID (can be NULL)

For DHCPv6, the information returned: - Network Interface Name - Expiry Time - MAC address - IAID (can be NULL, only in rare cases) - IPv6 address (with type and prefix) - Hostname (can be NULL) - Client DUID

Note: @mac, @iaid, @ipaddr, @clientid are in ASCII form, not raw bytes. Note: @expirytime can 0, in case the lease is for infinite time.

The API fetches leases info of guests in the specified network. If the optional parameter @mac is specified, the returned list will contain only lease info about a specific guest interface with @mac. There can be multiple leases for a single @mac because this API supports DHCPv6 too.

network
  Pointer to network object
mac
  Optional ASCII formatted MAC address of an interface
leases
  Pointer to a variable to store the array containing details on obtained leases, or NULL if the list is not required (just returns number of leases).
flags
  Extra flags, not used yet, so callers should always pass 0
Returns
  the number of leases found or -1 and sets @leases to NULL in case of error. On success, the array stored into @leases is guaranteed to have an extra allocated element set to NULL but not included in the return count, to make iteration easier. The caller is responsible for calling virNetworkDHCPLeaseFree() on each array element, then calling free() on @leases. See also virNetworkGetDHCPLeasesForMAC() as a convenience for filtering the list to a single MAC address. Example of usage: virNetworkDHCPLeasePtr *leases = NULL; virNetworkPtr network = ... obtain a network pointer here ...; size_t i; int nleases; unsigned int flags = 0; nleases = virNetworkGetDHCPLeases(network, NULL, &leases, flags); if (nleases < 0) error(); ... do something with returned values, for example: for (i = 0; i < nleases; i++) { virNetworkDHCPLeasePtr lease = leases[i]; printf("Time(epoch): %lu, MAC address: %s, " "IP address: %s, Hostname: %s, ClientID: %s\n", lease->expirytime, lease->mac, lease->ipaddr, lease->hostname, lease->clientid); virNetworkDHCPLeaseFree(leases[i]); } free(leases);

### `virNetworkGetName`

    const char *	virNetworkGetName	(virNetworkPtr network)

Get the public name for that network

network
  a network object
Returns
  a pointer to the name or NULL, the string need not be deallocated its lifetime will be the same as the network object.

### `virNetworkGetUUID`

    int	virNetworkGetUUID		(virNetworkPtr network,
    					 unsigned char * uuid)

Get the UUID for a network

network
  a network object
uuid
  pointer to a VIR_UUID_BUFLEN bytes array
Returns
  -1 in case of error, 0 in case of success

### `virNetworkGetUUIDString`

    int	virNetworkGetUUIDString		(virNetworkPtr network,
    					 char * buf)

Get the UUID for a network as string. For more information about UUID see RFC4122.

network
  a network object
buf
  pointer to a VIR_UUID_STRING_BUFLEN bytes array
Returns
  -1 in case of error, 0 in case of success

### `virNetworkGetXMLDesc`

    char *	virNetworkGetXMLDesc		(virNetworkPtr network,
    					 unsigned int flags)

Provide an XML description of the network. The description may be reused later to relaunch the network with virNetworkCreateXML().

Normally, if a network included a physical function, the output includes all virtual functions tied to that physical interface. If @flags includes VIR_NETWORK_XML_INACTIVE, then the expansion of virtual interfaces is not performed.

network
  a network object
flags
  bitwise-OR of virNetworkXMLFlags
Returns
  a 0 terminated UTF-8 encoded XML instance, or NULL in case of error. the caller must free() the returned value.

### `virNetworkIsActive`

    int	virNetworkIsActive		(virNetworkPtr net)

Determine if the network is currently running

net
  pointer to the network object
Returns
  1 if running, 0 if inactive, -1 on error

### `virNetworkIsPersistent`

    int	virNetworkIsPersistent		(virNetworkPtr net)

Determine if the network has a persistent configuration which means it will still exist after shutting down

net
  pointer to the network object
Returns
  1 if persistent, 0 if transient, -1 on error

### `virNetworkLookupByName`

    virNetworkPtr	virNetworkLookupByName	(virConnectPtr conn,
    					 const char * name)

Try to lookup a network on the given hypervisor based on its name.

virNetworkFree should be used to free the resources after the network object is no longer needed.

conn
  pointer to the hypervisor connection
name
  name for the network
Returns
  a new network object or NULL in case of failure. If the network cannot be found, then VIR_ERR_NO_NETWORK error is raised.

### `virNetworkLookupByUUID`

    virNetworkPtr	virNetworkLookupByUUID	(virConnectPtr conn,
    					 const unsigned char * uuid)

Try to lookup a network on the given hypervisor based on its UUID.

virNetworkFree should be used to free the resources after the network object is no longer needed.

conn
  pointer to the hypervisor connection
uuid
  the raw UUID for the network
Returns
  a new network object or NULL in case of failure. If the network cannot be found, then VIR_ERR_NO_NETWORK error is raised.

### `virNetworkLookupByUUIDString`

    virNetworkPtr	virNetworkLookupByUUIDString	(virConnectPtr conn,
    						 const char * uuidstr)

Try to lookup a network on the given hypervisor based on its UUID.

conn
  pointer to the hypervisor connection
uuidstr
  the string UUID for the network
Returns
  a new network object or NULL in case of failure. If the network cannot be found, then VIR_ERR_NO_NETWORK error is raised.

### `virNetworkRef`

    int	virNetworkRef			(virNetworkPtr network)

Increment the reference count on the network. For each additional call to this method, there shall be a corresponding call to virNetworkFree to release the reference count, once the caller no longer needs the reference to this object.

This method is typically useful for applications where multiple threads are using a connection, and it is required that the connection remain open until all threads have finished using it. ie, each new thread using a network would increment the reference count.

network
  the network to hold a reference on
Returns
  0 in case of success, -1 in case of failure.

### `virNetworkSetAutostart`

    int	virNetworkSetAutostart		(virNetworkPtr network,
    					 int autostart)

Configure the network to be automatically started when the host machine boots.

network
  a network object
autostart
  whether the network should be automatically started 0 or 1
Returns
  -1 in case of error, 0 in case of success

### `virNetworkUndefine`

    int	virNetworkUndefine		(virNetworkPtr network)

Undefine a network but does not stop it if it is running

network
  pointer to a defined network
Returns
  0 in case of success, -1 in case of error

### `virNetworkUpdate`

    int	virNetworkUpdate		(virNetworkPtr network,
    					 unsigned int command,
    					 unsigned int section,
    					 int parentIndex,
    					 const char * xml,
    					 unsigned int flags)

Update the definition of an existing network, either its live running state, its persistent configuration, or both.

network
  pointer to a defined network
command
  what action to perform (add/delete/modify) (see virNetworkUpdateCommand for descriptions)
section
  which section of the network to update (see virNetworkUpdateSection for descriptions)
parentIndex
  which parent element, if there are multiple parents of the same type (e.g. which <ip> element when modifying a <dhcp>/<host> element), or "-1" for "don't care" or "automatically find appropriate one".
xml
  the XML description for the network, preferably in UTF-8
flags
  bitwise OR of virNetworkUpdateFlags.
Returns
  0 in case of success, -1 in case of error virNetworkUpdateCommand virNetworkUpdateSection

### `virNodeAllocPages`

    int	virNodeAllocPages		(virConnectPtr conn,
    					 unsigned int npages,
    					 unsigned int * pageSizes,
    					 unsigned long long * pageCounts,
    					 int startCell,
    					 unsigned int cellCount,
    					 unsigned int flags)

Sometimes, when trying to start a new domain, it may be necessary to reserve some huge pages in the system pool which can be then allocated by the domain. This API serves that purpose. On its input, @pageSizes and @pageCounts are arrays of the same cardinality of @npages. The @pageSizes contains page sizes which are to be allocated in the system (the size unit is kibibytes), and @pageCounts then contains the number of pages to reserve. If @flags is 0 (VIR_NODE_ALLOC_PAGES_ADD), each pool corresponding to @pageSizes grows by the number of pages specified in the corresponding @pageCounts. If @flags contains VIR_NODE_ALLOC_PAGES_SET, each pool mentioned is resized to the given number of pages. The pages pool can be allocated over several NUMA nodes at once, just point at @startCell and tell how many subsequent NUMA nodes should be taken in. As a special case, if @startCell is equal to negative one, then kernel is instructed to allocate the pages over all NUMA nodes proportionally.

conn
  pointer to the hypervisor connection
npages
  number of items in the @pageSizes and @pageCounts arrays
pageSizes
  which huge page sizes to allocate
pageCounts
  how many pages should be allocated
startCell
  index of first cell to allocate pages on
cellCount
  number of consecutive cells to allocate pages on
flags
  extra flags; binary-OR of virNodeAllocPagesFlags
Returns
  the number of nodes successfully adjusted or -1 in case of an error.

### `virNodeDeviceCreateXML`

    virNodeDevicePtr	virNodeDeviceCreateXML	(virConnectPtr conn,
    						 const char * xmlDesc,
    						 unsigned int flags)

Create a new device on the VM host machine, for example, virtual HBAs created using vport_create.

virNodeDeviceFree should be used to free the resources after the node device object is no longer needed.

conn
  pointer to the hypervisor connection
xmlDesc
  string containing an XML description of the device to be created
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  a node device object if successful, NULL in case of failure

### `virNodeDeviceDestroy`

    int	virNodeDeviceDestroy		(virNodeDevicePtr dev)

Destroy the device object. The virtual device (only works for vHBA currently) is removed from the host operating system. This function may require privileged access.

dev
  a device object
Returns
  0 in case of success and -1 in case of failure.

### `virNodeDeviceDetachFlags`

    int	virNodeDeviceDetachFlags	(virNodeDevicePtr dev,
    					 const char * driverName,
    					 unsigned int flags)

Detach the node device from the node itself so that it may be assigned to a guest domain.

Depending on the hypervisor, this may involve operations such as unbinding any device drivers from the device, binding the device to a dummy device driver and resetting the device. Different backend drivers expect the device to be bound to different dummy devices. For example, QEMU's "kvm" backend driver (the default) expects the device to be bound to "pci-stub", but its "vfio" backend driver expects the device to be bound to "vfio-pci".

If the device is currently in use by the node, this method may fail.

Once the device is not assigned to any guest, it may be re-attached to the node using the virNodeDeviceReAttach() method.

dev
  pointer to the node device
driverName
  name of backend driver that will be used for later device assignment to a domain. NULL means "use the hypervisor default driver"
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  0 in case of success, -1 in case of failure.

### `virNodeDeviceDettach`

    int	virNodeDeviceDettach		(virNodeDevicePtr dev)

Dettach the node device from the node itself so that it may be assigned to a guest domain.

Depending on the hypervisor, this may involve operations such as unbinding any device drivers from the device, binding the device to a dummy device driver and resetting the device.

If the device is currently in use by the node, this method may fail.

Once the device is not assigned to any guest, it may be re-attached to the node using the virNodeDeviceReattach() method.

If the caller needs control over which backend driver will be used during PCI device assignment (to use something other than the default, for example VFIO), the newer virNodeDeviceDetachFlags() API should be used instead.

dev
  pointer to the node device
Returns
  0 in case of success, -1 in case of failure.

### `virNodeDeviceFree`

    int	virNodeDeviceFree		(virNodeDevicePtr dev)

Drops a reference to the node device, freeing it if this was the last reference.

dev
  pointer to the node device
Returns
  the 0 for success, -1 for error.

### `virNodeDeviceGetName`

    const char *	virNodeDeviceGetName	(virNodeDevicePtr dev)

Just return the device name

dev
  the device
Returns
  the device name or NULL in case of error

### `virNodeDeviceGetParent`

    const char *	virNodeDeviceGetParent	(virNodeDevicePtr dev)

Accessor for the parent of the device

dev
  the device
Returns
  the name of the device's parent, or NULL if an error occurred or when the device has no parent.

### `virNodeDeviceGetXMLDesc`

    char *	virNodeDeviceGetXMLDesc		(virNodeDevicePtr dev,
    					 unsigned int flags)

Fetch an XML document describing all aspects of the device.

dev
  pointer to the node device
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  the XML document, or NULL on error

### `virNodeDeviceListCaps`

    int	virNodeDeviceListCaps		(virNodeDevicePtr dev,
    					 char ** const names,
    					 int maxnames)

Lists the names of the capabilities supported by the device.

dev
  the device
names
  array to collect the list of capability names
maxnames
  size of @names
Returns
  the number of capability names listed in @names or -1 in case of error.

### `virNodeDeviceLookupByName`

    virNodeDevicePtr	virNodeDeviceLookupByName	(virConnectPtr conn,
    							 const char * name)

Lookup a node device by its name.

virNodeDeviceFree should be used to free the resources after the node device object is no longer needed.

conn
  pointer to the hypervisor connection
name
  unique device name
Returns
  a virNodeDevicePtr if found, NULL otherwise.

### `virNodeDeviceLookupSCSIHostByWWN`

    virNodeDevicePtr	virNodeDeviceLookupSCSIHostByWWN	(virConnectPtr conn,
    							 const char * wwnn,
    							 const char * wwpn,
    							 unsigned int flags)

Lookup SCSI Host which is capable with 'fc_host' by its WWNN and WWPN.

virNodeDeviceFree should be used to free the resources after the node device object is no longer needed.

conn
  pointer to the hypervisor connection
wwnn
  WWNN of the SCSI Host.
wwpn
  WWPN of the SCSI Host.
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  a virNodeDevicePtr if found, NULL otherwise.

### `virNodeDeviceNumOfCaps`

    int	virNodeDeviceNumOfCaps		(virNodeDevicePtr dev)

Accessor for the number of capabilities supported by the device.

dev
  the device
Returns
  the number of capabilities supported by the device or -1 in case of error.

### `virNodeDeviceReAttach`

    int	virNodeDeviceReAttach		(virNodeDevicePtr dev)

Re-attach a previously dettached node device to the node so that it may be used by the node again.

Depending on the hypervisor, this may involve operations such as resetting the device, unbinding it from a dummy device driver and binding it to its appropriate driver.

If the device is currently in use by a guest, this method may fail.

dev
  pointer to the node device
Returns
  0 in case of success, -1 in case of failure.

### `virNodeDeviceRef`

    int	virNodeDeviceRef		(virNodeDevicePtr dev)

Increment the reference count on the dev. For each additional call to this method, there shall be a corresponding call to virNodeDeviceFree to release the reference count, once the caller no longer needs the reference to this object.

This method is typically useful for applications where multiple threads are using a connection, and it is required that the connection remain open until all threads have finished using it. ie, each new thread using a dev would increment the reference count.

dev
  the dev to hold a reference on
Returns
  0 in case of success, -1 in case of failure.

### `virNodeDeviceReset`

    int	virNodeDeviceReset		(virNodeDevicePtr dev)

Reset a previously dettached node device to the node before or after assigning it to a guest.

The exact reset semantics depends on the hypervisor and device type but, for example, KVM will attempt to reset PCI devices with a Function Level Reset, Secondary Bus Reset or a Power Management D-State reset.

If the reset will affect other devices which are currently in use, this function may fail.

dev
  pointer to the node device
Returns
  0 in case of success, -1 in case of failure.

### `virNodeGetCPUMap`

    int	virNodeGetCPUMap		(virConnectPtr conn,
    					 unsigned char ** cpumap,
    					 unsigned int * online,
    					 unsigned int flags)

Get CPU map of host node CPUs.

conn
  pointer to the hypervisor connection
cpumap
  optional pointer to a bit map of real CPUs on the host node (in 8-bit bytes) (OUT) In case of success each bit set to 1 means that corresponding CPU is online. Bytes are stored in little-endian order: CPU0-7, 8-15... In each byte, lowest CPU number is least significant bit. The bit map is allocated by virNodeGetCPUMap and needs to be released using free() by the caller.
online
  optional number of online CPUs in cpumap (OUT) Contains the number of online CPUs if the call was successful.
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  number of CPUs present on the host node, or -1 if there was an error.

### `virNodeGetCPUStats`

    int	virNodeGetCPUStats		(virConnectPtr conn,
    					 int cpuNum,
    					 virNodeCPUStatsPtr params,
    					 int * nparams,
    					 unsigned int flags)

This function provides individual cpu statistics of the node. If you want to get total cpu statistics of the node, you must specify VIR_NODE_CPU_STATS_ALL_CPUS to @cpuNum. The @params array will be filled with the values equal to the number of parameters suggested by @nparams

As the value of @nparams is dynamic, call the API setting @nparams to 0 and @params as NULL, the API returns the number of parameters supported by the HV by updating @nparams on SUCCESS. The caller should then allocate @params array, i.e. (sizeof(@virNodeCPUStats) * @nparams) bytes and call the API again.

Here is a sample code snippet:

    if (virNodeGetCPUStats(conn, cpuNum, NULL, &nparams, 0) == 0 &&
        nparams != 0) {
        if ((params = malloc(sizeof(virNodeCPUStats) * nparams)) == NULL)
            goto error;
        memset(params, 0, sizeof(virNodeCPUStats) * nparams);
        if (virNodeGetCPUStats(conn, cpuNum, params, &nparams, 0))
            goto error;
    }

This function doesn't require privileged access to the hypervisor. This function expects the caller to allocate the @params.

CPU time Statistics:

VIR_NODE_CPU_STATS_KERNEL: The cumulative CPU time which spends by kernel, when the node booting up.(nanoseconds) VIR_NODE_CPU_STATS_USER: The cumulative CPU time which spends by user processes, when the node booting up.(nanoseconds) VIR_NODE_CPU_STATS_IDLE: The cumulative idle CPU time, when the node booting up.(nanoseconds) VIR_NODE_CPU_STATS_IOWAIT: The cumulative I/O wait CPU time, when the node booting up.(nanoseconds) VIR_NODE_CPU_STATS_UTILIZATION: The CPU utilization. The usage value is in percent and 100% represents all CPUs on the server.

conn
  pointer to the hypervisor connection.
cpuNum
  number of node cpu. (VIR_NODE_CPU_STATS_ALL_CPUS means total cpu statistics)
params
  pointer to node cpu time parameter objects
nparams
  number of node cpu time parameter (this value should be same or less than the number of parameters supported)
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  -1 in case of error, 0 in case of success.

### `virNodeGetCellsFreeMemory`

    int	virNodeGetCellsFreeMemory	(virConnectPtr conn,
    					 unsigned long long * freeMems,
    					 int startCell,
    					 int maxCells)

This call returns the amount of free memory in one or more NUMA cells. The @freeMems array must be allocated by the caller and will be filled with the amount of free memory in bytes for each cell requested, starting with startCell (in freeMems[0]), up to either (startCell + maxCells), or the number of additional cells in the node, whichever is smaller.

conn
  pointer to the hypervisor connection
freeMems
  pointer to the array of unsigned long long
startCell
  index of first cell to return freeMems info on.
maxCells
  Maximum number of cells for which freeMems information can be returned.
Returns
  the number of entries filled in freeMems, or -1 in case of error.

### `virNodeGetFreeMemory`

    unsigned long long	virNodeGetFreeMemory	(virConnectPtr conn)

provides the free memory available on the Node Note: most libvirt APIs provide memory sizes in kibibytes, but in this function the returned value is in bytes. Divide by 1024 as necessary.

conn
  pointer to the hypervisor connection
Returns
  the available free memory in bytes or 0 in case of error

### `virNodeGetFreePages`

    int	virNodeGetFreePages		(virConnectPtr conn,
    					 unsigned int npages,
    					 unsigned int * pages,
    					 int startCell,
    					 unsigned int cellCount,
    					 unsigned long long * counts,
    					 unsigned int flags)

This calls queries the host system on free pages of specified size. For the input, @pages is expected to be filled with pages that caller is interested in (the size unit is kibibytes, so e.g. pass 2048 for 2MB), then @startcell refers to the first NUMA node that info should be collected from, and @cellcount tells how many consecutive nodes should be queried. On the function output, @counts is filled with desired information, where items are grouped by NUMA node. So from @counts[0] till @counts[@npages - 1] you'll find count for the first node (@startcell), then from @counts[@npages] till @count[2 * @npages - 1] you'll find info for the (@startcell + 1) node, and so on. It's callers responsibility to allocate the @counts array.

Example how to use this API:

    unsigned int pages[] = { 4, 2048, 1048576}
    unsigned int npages = ARRAY_CARDINALITY(pages);
    int startcell = 0;
    unsigned int cellcount = 2;

    unsigned long long counts = malloc(sizeof(long long) * npages * cellcount);

    virNodeGetFreePages(conn, pages, npages,
                        startcell, cellcount, counts, 0);

    for (i = 0 ; i < cellcount ; i++) {
        fprintf(stdout, "Cell %d\n", startcell + i);
        for (j = 0 ; j < npages ; j++) {
           fprintf(stdout, "  Page size=%d count=%d bytes=%llu\n",
                   pages[j], counts[(i * npages) +  j],
                   pages[j] * counts[(i * npages) +  j]);
        }
    }

    This little code snippet will produce something like this:
    Cell 0
     Page size=4096 count=300 bytes=1228800
     Page size=2097152 count=0 bytes=0
     Page size=1073741824 count=1 bytes=1073741824
    Cell 1
     Page size=4096 count=0 bytes=0
     Page size=2097152 count=20 bytes=41943040
     Page size=1073741824 count=0 bytes=0

conn
  pointer to the hypervisor connection
npages
  number of items in the @pages array
pages
  page sizes to query
startCell
  index of first cell to return free pages info on.
cellCount
  maximum number of cells for which free pages information can be returned.
counts
  returned counts of free pages
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  the number of entries filled in @counts or -1 in case of error.

### `virNodeGetInfo`

    int	virNodeGetInfo			(virConnectPtr conn,
    					 virNodeInfoPtr info)

Extract hardware information about the node.

conn
  pointer to the hypervisor connection
info
  pointer to a virNodeInfo structure allocated by the user
Returns
  0 in case of success and -1 in case of failure.

### `virNodeGetMemoryParameters`

    int	virNodeGetMemoryParameters	(virConnectPtr conn,
    					 virTypedParameterPtr params,
    					 int * nparams,
    					 unsigned int flags)

Get all node memory parameters (parameters unsupported by OS will be omitted). On input, @nparams gives the size of the @params array; on output, @nparams gives how many slots were filled with parameter information, which might be less but will not exceed the input value.

As a special case, calling with @params as NULL and @nparams as 0 on input will cause @nparams on output to contain the number of parameters supported by the hypervisor. The caller should then allocate @params array, i.e. (sizeof(@virTypedParameter) * @nparams) bytes and call the API again. See virDomainGetMemoryParameters() for an equivalent usage example.

conn
  pointer to the hypervisor connection
params
  pointer to memory parameter object (return value, allocated by the caller)
nparams
  pointer to number of memory parameters; input and output
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  0 in case of success, and -1 in case of failure.

### `virNodeGetMemoryStats`

    int	virNodeGetMemoryStats		(virConnectPtr conn,
    					 int cellNum,
    					 virNodeMemoryStatsPtr params,
    					 int * nparams,
    					 unsigned int flags)

This function provides memory stats of the node. If you want to get total memory statistics of the node, you must specify VIR_NODE_MEMORY_STATS_ALL_CELLS to @cellNum. The @params array will be filled with the values equal to the number of stats suggested by @nparams

As the value of @nparams is dynamic, call the API setting @nparams to 0 and @params as NULL, the API returns the number of parameters supported by the HV by updating @nparams on SUCCESS. The caller should then allocate @params array, i.e. (sizeof(@virNodeMemoryStats) * @nparams) bytes and call the API again.

Here is the sample code snippet:

    if (virNodeGetMemoryStats(conn, cellNum, NULL, &nparams, 0) == 0 &&
        nparams != 0) {
        if ((params = malloc(sizeof(virNodeMemoryStats) * nparams)) == NULL)
            goto error;
        memset(params, cellNum, 0, sizeof(virNodeMemoryStats) * nparams);
        if (virNodeGetMemoryStats(conn, params, &nparams, 0))
            goto error;
    }

This function doesn't require privileged access to the hypervisor. This function expects the caller to allocate the @params.

Memory Stats:

VIR_NODE_MEMORY_STATS_TOTAL: The total memory usage.(KB) VIR_NODE_MEMORY_STATS_FREE: The free memory usage.(KB) On linux, this usage includes buffers and cached. VIR_NODE_MEMORY_STATS_BUFFERS: The buffers memory usage.(KB) VIR_NODE_MEMORY_STATS_CACHED: The cached memory usage.(KB)

conn
  pointer to the hypervisor connection.
cellNum
  number of node cell. (VIR_NODE_MEMORY_STATS_ALL_CELLS means total cell statistics)
params
  pointer to node memory stats objects
nparams
  number of node memory stats (this value should be same or less than the number of stats supported)
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  -1 in case of error, 0 in case of success.

### `virNodeGetSecurityModel`

    int	virNodeGetSecurityModel		(virConnectPtr conn,
    					 virSecurityModelPtr secmodel)

Extract the security model of a hypervisor. The 'model' field in the @secmodel argument may be initialized to the empty string if the driver has not activated a security model.

conn
  a connection object
secmodel
  pointer to a virSecurityModel structure
Returns
  0 in case of success, -1 in case of failure

### `virNodeListDevices`

    int	virNodeListDevices		(virConnectPtr conn,
    					 const char * cap,
    					 char ** const names,
    					 int maxnames,
    					 unsigned int flags)

Collect the list of node devices, and store their names in @names

For more control over the results, see virConnectListAllNodeDevices().

If the optional 'cap' argument is non-NULL, then the count will be restricted to devices with the specified capability

conn
  pointer to the hypervisor connection
cap
  capability name
names
  array to collect the list of node device names
maxnames
  size of @names
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  the number of node devices found or -1 in case of error

### `virNodeNumOfDevices`

    int	virNodeNumOfDevices		(virConnectPtr conn,
    					 const char * cap,
    					 unsigned int flags)

Provides the number of node devices.

If the optional 'cap' argument is non-NULL, then the count will be restricted to devices with the specified capability

conn
  pointer to the hypervisor connection
cap
  capability name
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  the number of node devices or -1 in case of error

### `virNodeSetMemoryParameters`

    int	virNodeSetMemoryParameters	(virConnectPtr conn,
    					 virTypedParameterPtr params,
    					 int nparams,
    					 unsigned int flags)

Change all or a subset of the node memory tunables. The function fails if not all of the tunables are supported.

Note that it's not recommended to use this function while the outside tuning program is running (such as ksmtuned under Linux), as they could change the tunables in parallel, which could cause conflicts.

This function may require privileged access to the hypervisor.

conn
  pointer to the hypervisor connection
params
  pointer to scheduler parameter objects
nparams
  number of scheduler parameter objects (this value can be the same or less than the returned value nparams of virDomainGetSchedulerType)
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  0 in case of success, -1 in case of failure.

### `virNodeSuspendForDuration`

    int	virNodeSuspendForDuration	(virConnectPtr conn,
    					 unsigned int target,
    					 unsigned long long duration,
    					 unsigned int flags)

Attempt to suspend the node (host machine) for the given duration of time in the specified state (Suspend-to-RAM, Suspend-to-Disk or Hybrid-Suspend). Schedule the node's Real-Time-Clock interrupt to resume the node after the duration is complete.

conn
  pointer to the hypervisor connection
target
  the state to which the host must be suspended to, such as: VIR_NODE_SUSPEND_TARGET_MEM (Suspend-to-RAM) VIR_NODE_SUSPEND_TARGET_DISK (Suspend-to-Disk) VIR_NODE_SUSPEND_TARGET_HYBRID (Hybrid-Suspend, which is a combination of the former modes).
duration
  the time duration in seconds for which the host has to be suspended
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  0 on success (i.e., the node will be suspended after a short delay), -1 on failure (the operation is not supported, or an attempted suspend is already underway).

### `virSecretDefineXML`

    virSecretPtr	virSecretDefineXML	(virConnectPtr conn,
    					 const char * xml,
    					 unsigned int flags)

If XML specifies a UUID, locates the specified secret and replaces all attributes of the secret specified by UUID by attributes specified in xml (any attributes not specified in xml are discarded).

Otherwise, creates a new secret with an automatically chosen UUID, and initializes its attributes from xml.

virSecretFree should be used to free the resources after the secret object is no longer needed.

conn
  virConnect connection
xml
  XML describing the secret.
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  a secret on success, NULL on failure.

### `virSecretFree`

    int	virSecretFree			(virSecretPtr secret)

Release the secret handle. The underlying secret continues to exist.

secret
  pointer to a secret
Returns
  0 on success, or -1 on error

### `virSecretGetConnect`

    virConnectPtr	virSecretGetConnect	(virSecretPtr secret)

Provides the connection pointer associated with a secret. The reference counter on the connection is not increased by this call.

WARNING: When writing libvirt bindings in other languages, do not use this function. Instead, store the connection and the secret object together.

secret
  A virSecret secret
Returns
  the virConnectPtr or NULL in case of failure.

### `virSecretGetUUID`

    int	virSecretGetUUID		(virSecretPtr secret,
    					 unsigned char * uuid)

Fetches the UUID of the secret.

secret
  A virSecret secret
uuid
  buffer of VIR_UUID_BUFLEN bytes in size
Returns
  0 on success with the uuid buffer being filled, or -1 upon failure.

### `virSecretGetUUIDString`

    int	virSecretGetUUIDString		(virSecretPtr secret,
    					 char * buf)

Get the UUID for a secret as string. For more information about UUID see RFC4122.

secret
  a secret object
buf
  pointer to a VIR_UUID_STRING_BUFLEN bytes array
Returns
  -1 in case of error, 0 in case of success

### `virSecretGetUsageID`

    const char *	virSecretGetUsageID	(virSecretPtr secret)

Get the unique identifier of the object with which this secret is to be used. The format of the identifier is dependant on the usage type of the secret. For a secret with a usage type of VIR_SECRET_USAGE_TYPE_VOLUME the identifier will be a fully qualfied path name. The identifiers are intended to be unique within the set of all secrets sharing the same usage type. ie, there shall only ever be one secret for each volume path.

secret
  a secret object
Returns
  a string identifying the object using the secret, or NULL upon error

### `virSecretGetUsageType`

    int	virSecretGetUsageType		(virSecretPtr secret)

Get the type of object which uses this secret. The returned value is one of the constants defined in the virSecretUsageType enumeration. More values may be added to this enumeration in the future, so callers should expect to see usage types they do not explicitly know about.

secret
  a secret object
Returns
  a positive integer identifying the type of object, or -1 upon error.

### `virSecretGetValue`

    unsigned char *	virSecretGetValue	(virSecretPtr secret,
    					 size_t * value_size,
    					 unsigned int flags)

Fetches the value of a secret.

secret
  A virSecret connection
value_size
  Place for storing size of the secret value
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  the secret value on success, NULL on failure. The caller must free() the secret value.

### `virSecretGetXMLDesc`

    char *	virSecretGetXMLDesc		(virSecretPtr secret,
    					 unsigned int flags)

Fetches an XML document describing attributes of the secret.

secret
  A virSecret secret
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  the XML document on success, NULL on failure. The caller must free() the XML.

### `virSecretLookupByUUID`

    virSecretPtr	virSecretLookupByUUID	(virConnectPtr conn,
    					 const unsigned char * uuid)

Try to lookup a secret on the given hypervisor based on its UUID. Uses the 16 bytes of raw data to describe the UUID

virSecretFree should be used to free the resources after the secret object is no longer needed.

conn
  pointer to the hypervisor connection
uuid
  the raw UUID for the secret
Returns
  a new secret object or NULL in case of failure. If the secret cannot be found, then VIR_ERR_NO_SECRET error is raised.

### `virSecretLookupByUUIDString`

    virSecretPtr	virSecretLookupByUUIDString	(virConnectPtr conn,
    						 const char * uuidstr)

Try to lookup a secret on the given hypervisor based on its UUID. Uses the printable string value to describe the UUID

virSecretFree should be used to free the resources after the secret object is no longer needed.

conn
  pointer to the hypervisor connection
uuidstr
  the string UUID for the secret
Returns
  a new secret object or NULL in case of failure. If the secret cannot be found, then VIR_ERR_NO_SECRET error is raised.

### `virSecretLookupByUsage`

    virSecretPtr	virSecretLookupByUsage	(virConnectPtr conn,
    					 int usageType,
    					 const char * usageID)

Try to lookup a secret on the given hypervisor based on its usage The usageID is unique within the set of secrets sharing the same usageType value.

virSecretFree should be used to free the resources after the secret object is no longer needed.

conn
  pointer to the hypervisor connection
usageType
  the type of secret usage
usageID
  identifier of the object using the secret
Returns
  a new secret object or NULL in case of failure. If the secret cannot be found, then VIR_ERR_NO_SECRET error is raised.

### `virSecretRef`

    int	virSecretRef			(virSecretPtr secret)

Increment the reference count on the secret. For each additional call to this method, there shall be a corresponding call to virSecretFree to release the reference count, once the caller no longer needs the reference to this object.

This method is typically useful for applications where multiple threads are using a connection, and it is required that the connection remain open until all threads have finished using it. ie, each new thread using a secret would increment the reference count.

secret
  the secret to hold a reference on
Returns
  0 in case of success, -1 in case of failure.

### `virSecretSetValue`

    int	virSecretSetValue		(virSecretPtr secret,
    					 const unsigned char * value,
    					 size_t value_size,
    					 unsigned int flags)

Sets the value of a secret.

secret
  A virSecret secret
value
  Value of the secret
value_size
  Size of the value
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  0 on success, -1 on failure.

### `virSecretUndefine`

    int	virSecretUndefine		(virSecretPtr secret)

Deletes the specified secret. This does not free the associated virSecretPtr object.

secret
  A virSecret secret
Returns
  0 on success, -1 on failure.

### `virStoragePoolBuild`

    int	virStoragePoolBuild		(virStoragePoolPtr pool,
    					 unsigned int flags)

Currently only filesystem pool accepts flags VIR_STORAGE_POOL_BUILD_OVERWRITE and VIR_STORAGE_POOL_BUILD_NO_OVERWRITE.

Build the underlying storage pool

pool
  pointer to storage pool
flags
  bitwise-OR of virStoragePoolBuildFlags
Returns
  0 on success, or -1 upon failure

### `virStoragePoolCreate`

    int	virStoragePoolCreate		(virStoragePoolPtr pool,
    					 unsigned int flags)

Starts an inactive storage pool

pool
  pointer to storage pool
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  0 on success, or -1 if it could not be started

### `virStoragePoolCreateXML`

    virStoragePoolPtr	virStoragePoolCreateXML	(virConnectPtr conn,
    						 const char * xmlDesc,
    						 unsigned int flags)

Create a new storage based on its XML description. The pool is not persistent, so its definition will disappear when it is destroyed, or if the host is restarted

virStoragePoolFree should be used to free the resources after the storage pool object is no longer needed.

conn
  pointer to hypervisor connection
xmlDesc
  XML description for new pool
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  a virStoragePoolPtr object, or NULL if creation failed

### `virStoragePoolDefineXML`

    virStoragePoolPtr	virStoragePoolDefineXML	(virConnectPtr conn,
    						 const char * xml,
    						 unsigned int flags)

Define a new inactive storage pool based on its XML description. The pool is persistent, until explicitly undefined.

virStoragePoolFree should be used to free the resources after the storage pool object is no longer needed.

conn
  pointer to hypervisor connection
xml
  XML description for new pool
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  a virStoragePoolPtr object, or NULL if creation failed

### `virStoragePoolDelete`

    int	virStoragePoolDelete		(virStoragePoolPtr pool,
    					 unsigned int flags)

Delete the underlying pool resources. This is a non-recoverable operation. The virStoragePoolPtr object itself is not free'd.

pool
  pointer to storage pool
flags
  bitwise-OR of virStoragePoolDeleteFlags
Returns
  0 on success, or -1 if it could not be obliterate

### `virStoragePoolDestroy`

    int	virStoragePoolDestroy		(virStoragePoolPtr pool)

Destroy an active storage pool. This will deactivate the pool on the host, but keep any persistent config associated with it. If it has a persistent config it can later be restarted with virStoragePoolCreate(). This does not free the associated virStoragePoolPtr object.

pool
  pointer to storage pool
Returns
  0 on success, or -1 if it could not be destroyed

### `virStoragePoolFree`

    int	virStoragePoolFree		(virStoragePoolPtr pool)

Free a storage pool object, releasing all memory associated with it. Does not change the state of the pool on the host.

pool
  pointer to storage pool
Returns
  0 on success, or -1 if it could not be free'd.

### `virStoragePoolGetAutostart`

    int	virStoragePoolGetAutostart	(virStoragePoolPtr pool,
    					 int * autostart)

Fetches the value of the autostart flag, which determines whether the pool is automatically started at boot time

pool
  pointer to storage pool
autostart
  location in which to store autostart flag
Returns
  0 on success, -1 on failure

### `virStoragePoolGetConnect`

    virConnectPtr	virStoragePoolGetConnect	(virStoragePoolPtr pool)

Provides the connection pointer associated with a storage pool. The reference counter on the connection is not increased by this call.

WARNING: When writing libvirt bindings in other languages, do not use this function. Instead, store the connection and the pool object together.

pool
  pointer to a pool
Returns
  the virConnectPtr or NULL in case of failure.

### `virStoragePoolGetInfo`

    int	virStoragePoolGetInfo		(virStoragePoolPtr pool,
    					 virStoragePoolInfoPtr info)

Get volatile information about the storage pool such as free space / usage summary

pool
  pointer to storage pool
info
  pointer at which to store info
Returns
  0 on success, or -1 on failure.

### `virStoragePoolGetName`

    const char *	virStoragePoolGetName	(virStoragePoolPtr pool)

Fetch the locally unique name of the storage pool

pool
  pointer to storage pool
Returns
  the name of the pool, or NULL on error

### `virStoragePoolGetUUID`

    int	virStoragePoolGetUUID		(virStoragePoolPtr pool,
    					 unsigned char * uuid)

Fetch the globally unique ID of the storage pool

pool
  pointer to storage pool
uuid
  buffer of VIR_UUID_BUFLEN bytes in size
Returns
  0 on success, or -1 on error;

### `virStoragePoolGetUUIDString`

    int	virStoragePoolGetUUIDString	(virStoragePoolPtr pool,
    					 char * buf)

Fetch the globally unique ID of the storage pool as a string

pool
  pointer to storage pool
buf
  buffer of VIR_UUID_STRING_BUFLEN bytes in size
Returns
  0 on success, or -1 on error;

### `virStoragePoolGetXMLDesc`

    char *	virStoragePoolGetXMLDesc	(virStoragePoolPtr pool,
    					 unsigned int flags)

Fetch an XML document describing all aspects of the storage pool. This is suitable for later feeding back into the virStoragePoolCreateXML method.

pool
  pointer to storage pool
flags
  bitwise-OR of virStorageXMLFlags
Returns
  a XML document (caller frees), or NULL on error

### `virStoragePoolIsActive`

    int	virStoragePoolIsActive		(virStoragePoolPtr pool)

Determine if the storage pool is currently running

pool
  pointer to the storage pool object
Returns
  1 if running, 0 if inactive, -1 on error

### `virStoragePoolIsPersistent`

    int	virStoragePoolIsPersistent	(virStoragePoolPtr pool)

Determine if the storage pool has a persistent configuration which means it will still exist after shutting down

pool
  pointer to the storage pool object
Returns
  1 if persistent, 0 if transient, -1 on error

### `virStoragePoolListAllVolumes`

    int	virStoragePoolListAllVolumes	(virStoragePoolPtr pool,
    					 virStorageVolPtr ** vols,
    					 unsigned int flags)

Collect the list of storage volumes, and allocate an array to store those objects.

pool
  Pointer to storage pool
vols
  Pointer to a variable to store the array containing storage volume objects or NULL if the list is not required (just returns number of volumes).
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  the number of storage volumes found or -1 and sets @vols to NULL in case of error. On success, the array stored into @vols is guaranteed to have an extra allocated element set to NULL but not included in the return count, to make iteration easier. The caller is responsible for calling virStorageVolFree() on each array element, then calling free() on @vols.

### `virStoragePoolListVolumes`

    int	virStoragePoolListVolumes	(virStoragePoolPtr pool,
    					 char ** const names,
    					 int maxnames)

Fetch list of storage volume names, limiting to at most maxnames.

To list the volume objects directly, see virStoragePoolListAllVolumes().

pool
  pointer to storage pool
names
  array in which to storage volume names
maxnames
  size of names array
Returns
  the number of names fetched, or -1 on error

### `virStoragePoolLookupByName`

    virStoragePoolPtr	virStoragePoolLookupByName	(virConnectPtr conn,
    							 const char * name)

Fetch a storage pool based on its unique name

virStoragePoolFree should be used to free the resources after the storage pool object is no longer needed.

conn
  pointer to hypervisor connection
name
  name of pool to fetch
Returns
  a virStoragePoolPtr object, or NULL if no matching pool is found

### `virStoragePoolLookupByUUID`

    virStoragePoolPtr	virStoragePoolLookupByUUID	(virConnectPtr conn,
    							 const unsigned char * uuid)

Fetch a storage pool based on its globally unique id

virStoragePoolFree should be used to free the resources after the storage pool object is no longer needed.

conn
  pointer to hypervisor connection
uuid
  globally unique id of pool to fetch
Returns
  a virStoragePoolPtr object, or NULL if no matching pool is found

### `virStoragePoolLookupByUUIDString`

    virStoragePoolPtr	virStoragePoolLookupByUUIDString	(virConnectPtr conn,
    							 const char * uuidstr)

Fetch a storage pool based on its globally unique id

virStoragePoolFree should be used to free the resources after the storage pool object is no longer needed.

conn
  pointer to hypervisor connection
uuidstr
  globally unique id of pool to fetch
Returns
  a virStoragePoolPtr object, or NULL if no matching pool is found

### `virStoragePoolLookupByVolume`

    virStoragePoolPtr	virStoragePoolLookupByVolume	(virStorageVolPtr vol)

Fetch a storage pool which contains a particular volume

virStoragePoolFree should be used to free the resources after the storage pool object is no longer needed.

vol
  pointer to storage volume
Returns
  a virStoragePoolPtr object, or NULL if no matching pool is found

### `virStoragePoolNumOfVolumes`

    int	virStoragePoolNumOfVolumes	(virStoragePoolPtr pool)

Fetch the number of storage volumes within a pool

pool
  pointer to storage pool
Returns
  the number of storage pools, or -1 on failure

### `virStoragePoolRef`

    int	virStoragePoolRef		(virStoragePoolPtr pool)

Increment the reference count on the pool. For each additional call to this method, there shall be a corresponding call to virStoragePoolFree to release the reference count, once the caller no longer needs the reference to this object.

This method is typically useful for applications where multiple threads are using a connection, and it is required that the connection remain open until all threads have finished using it. ie, each new thread using a pool would increment the reference count.

pool
  the pool to hold a reference on
Returns
  0 in case of success, -1 in case of failure.

### `virStoragePoolRefresh`

    int	virStoragePoolRefresh		(virStoragePoolPtr pool,
    					 unsigned int flags)

Request that the pool refresh its list of volumes. This may involve communicating with a remote server, and/or initializing new devices at the OS layer

pool
  pointer to storage pool
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  0 if the volume list was refreshed, -1 on failure

### `virStoragePoolSetAutostart`

    int	virStoragePoolSetAutostart	(virStoragePoolPtr pool,
    					 int autostart)

Sets the autostart flag

pool
  pointer to storage pool
autostart
  new flag setting
Returns
  0 on success, -1 on failure

### `virStoragePoolUndefine`

    int	virStoragePoolUndefine		(virStoragePoolPtr pool)

Undefine an inactive storage pool

pool
  pointer to storage pool
Returns
  0 on success, -1 on failure

### `virStorageVolCreateXML`

    virStorageVolPtr	virStorageVolCreateXML	(virStoragePoolPtr pool,
    						 const char * xmlDesc,
    						 unsigned int flags)

Create a storage volume within a pool based on an XML description. Not all pools support creation of volumes.

Since 1.0.1 VIR_STORAGE_VOL_CREATE_PREALLOC_METADATA in flags can be used to get higher performance with qcow2 image files which don't support full preallocation, by creating a sparse image file with metadata.

virStorageVolFree should be used to free the resources after the storage volume object is no longer needed.

pool
  pointer to storage pool
xmlDesc
  description of volume to create
flags
  bitwise-OR of virStorageVolCreateFlags
Returns
  the storage volume, or NULL on error

### `virStorageVolCreateXMLFrom`

    virStorageVolPtr	virStorageVolCreateXMLFrom	(virStoragePoolPtr pool,
    							 const char * xmlDesc,
    							 virStorageVolPtr clonevol,
    							 unsigned int flags)

Create a storage volume in the parent pool, using the 'clonevol' volume as input. Information for the new volume (name, perms) are passed via a typical volume XML description.

Since 1.0.1 VIR_STORAGE_VOL_CREATE_PREALLOC_METADATA in flags can be used to get higher performance with qcow2 image files which don't support full preallocation, by creating a sparse image file with metadata.

virStorageVolFree should be used to free the resources after the storage volume object is no longer needed.

pool
  pointer to parent pool for the new volume
xmlDesc
  description of volume to create
clonevol
  storage volume to use as input
flags
  bitwise-OR of virStorageVolCreateFlags
Returns
  the storage volume, or NULL on error

### `virStorageVolDelete`

    int	virStorageVolDelete		(virStorageVolPtr vol,
    					 unsigned int flags)

Delete the storage volume from the pool

vol
  pointer to storage volume
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  0 on success, or -1 on error

### `virStorageVolDownload`

    int	virStorageVolDownload		(virStorageVolPtr vol,
    					 virStreamPtr stream,
    					 unsigned long long offset,
    					 unsigned long long length,
    					 unsigned int flags)

Download the content of the volume as a stream. If @length is zero, then the remaining contents of the volume after @offset will be downloaded.

This call sets up an asynchronous stream; subsequent use of stream APIs is necessary to transfer the actual data, determine how much data is successfully transferred, and detect any errors. The results will be unpredictable if another active stream is writing to the storage volume.

vol
  pointer to volume to download from
stream
  stream to use as output
offset
  position in @vol to start reading from
length
  limit on amount of data to download
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  0, or -1 upon error.

### `virStorageVolFree`

    int	virStorageVolFree		(virStorageVolPtr vol)

Release the storage volume handle. The underlying storage volume continues to exist.

vol
  pointer to storage volume
Returns
  0 on success, or -1 on error

### `virStorageVolGetConnect`

    virConnectPtr	virStorageVolGetConnect	(virStorageVolPtr vol)

Provides the connection pointer associated with a storage volume. The reference counter on the connection is not increased by this call.

WARNING: When writing libvirt bindings in other languages, do not use this function. Instead, store the connection and the volume object together.

vol
  pointer to a pool
Returns
  the virConnectPtr or NULL in case of failure.

### `virStorageVolGetInfo`

    int	virStorageVolGetInfo		(virStorageVolPtr vol,
    					 virStorageVolInfoPtr info)

Fetches volatile information about the storage volume such as its current allocation

vol
  pointer to storage volume
info
  pointer at which to store info
Returns
  0 on success, or -1 on failure

### `virStorageVolGetKey`

    const char *	virStorageVolGetKey	(virStorageVolPtr vol)

Fetch the storage volume key. This is globally unique, so the same volume will have the same key no matter what host it is accessed from

vol
  pointer to storage volume
Returns
  the volume key, or NULL on error

### `virStorageVolGetName`

    const char *	virStorageVolGetName	(virStorageVolPtr vol)

Fetch the storage volume name. This is unique within the scope of a pool

vol
  pointer to storage volume
Returns
  the volume name, or NULL on error

### `virStorageVolGetPath`

    char *	virStorageVolGetPath		(virStorageVolPtr vol)

Fetch the storage volume path. Depending on the pool configuration this is either persistent across hosts, or dynamically assigned at pool startup. Consult pool documentation for information on getting the persistent naming

vol
  pointer to storage volume
Returns
  the storage volume path, or NULL on error. The caller must free() the returned path after use.

### `virStorageVolGetXMLDesc`

    char *	virStorageVolGetXMLDesc		(virStorageVolPtr vol,
    					 unsigned int flags)

Fetch an XML document describing all aspects of the storage volume

vol
  pointer to storage volume
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  the XML document, or NULL on error

### `virStorageVolLookupByKey`

    virStorageVolPtr	virStorageVolLookupByKey	(virConnectPtr conn,
    							 const char * key)

Fetch a pointer to a storage volume based on its globally unique key

virStorageVolFree should be used to free the resources after the storage volume object is no longer needed.

conn
  pointer to hypervisor connection
key
  globally unique key
Returns
  a storage volume, or NULL if not found / error

### `virStorageVolLookupByName`

    virStorageVolPtr	virStorageVolLookupByName	(virStoragePoolPtr pool,
    							 const char * name)

Fetch a pointer to a storage volume based on its name within a pool

virStorageVolFree should be used to free the resources after the storage volume object is no longer needed.

pool
  pointer to storage pool
name
  name of storage volume
Returns
  a storage volume, or NULL if not found / error

### `virStorageVolLookupByPath`

    virStorageVolPtr	virStorageVolLookupByPath	(virConnectPtr conn,
    							 const char * path)

Fetch a pointer to a storage volume based on its locally (host) unique path

virStorageVolFree should be used to free the resources after the storage volume object is no longer needed.

conn
  pointer to hypervisor connection
path
  locally unique path
Returns
  a storage volume, or NULL if not found / error

### `virStorageVolRef`

    int	virStorageVolRef		(virStorageVolPtr vol)

Increment the reference count on the vol. For each additional call to this method, there shall be a corresponding call to virStorageVolFree to release the reference count, once the caller no longer needs the reference to this object.

This method is typically useful for applications where multiple threads are using a connection, and it is required that the connection remain open until all threads have finished using it. ie, each new thread using a vol would increment the reference count.

vol
  the vol to hold a reference on
Returns
  0 in case of success, -1 in case of failure.

### `virStorageVolResize`

    int	virStorageVolResize		(virStorageVolPtr vol,
    					 unsigned long long capacity,
    					 unsigned int flags)

Changes the capacity of the storage volume @vol to @capacity. The operation will fail if the new capacity requires allocation that would exceed the remaining free space in the parent pool. The contents of the new capacity will appear as all zero bytes. The capacity value will be rounded to the granularity supported by the hypervisor.

Normally, the operation will attempt to affect capacity with a minimum impact on allocation (that is, the default operation favors a sparse resize). If @flags contains VIR_STORAGE_VOL_RESIZE_ALLOCATE, then the operation will ensure that allocation is sufficient for the new capacity; this may make the operation take noticeably longer.

Normally, the operation treats @capacity as the new size in bytes; but if @flags contains VIR_STORAGE_VOL_RESIZE_DELTA, then @capacity represents the size difference to add to the current size. It is up to the storage pool implementation whether unaligned requests are rounded up to the next valid boundary, or rejected.

Normally, this operation should only be used to enlarge capacity; but if @flags contains VIR_STORAGE_VOL_RESIZE_SHRINK, it is possible to attempt a reduction in capacity even though it might cause data loss. If VIR_STORAGE_VOL_RESIZE_DELTA is also present, then @capacity is subtracted from the current size; without it, @capacity represents the absolute new size regardless of whether it is larger or smaller than the current size.

vol
  pointer to storage volume
capacity
  new capacity, in bytes
flags
  bitwise-OR of virStorageVolResizeFlags
Returns
  0 on success, or -1 on error.

### `virStorageVolUpload`

    int	virStorageVolUpload		(virStorageVolPtr vol,
    					 virStreamPtr stream,
    					 unsigned long long offset,
    					 unsigned long long length,
    					 unsigned int flags)

Upload new content to the volume from a stream. This call will fail if @offset + @length exceeds the size of the volume. Otherwise, if @length is non-zero, an error will be raised if an attempt is made to upload greater than @length bytes of data.

This call sets up an asynchronous stream; subsequent use of stream APIs is necessary to transfer the actual data, determine how much data is successfully transferred, and detect any errors. The results will be unpredictable if another active stream is writing to the storage volume.

When the data stream is closed whether the upload is successful or not the target storage pool will be refreshed to reflect pool and volume changes as a result of the upload. Depending on the target volume storage backend and the source stream type for a successful upload, the target volume may take on the characteristics from the source stream such as format type, capacity, and allocation.

vol
  pointer to volume to upload
stream
  stream to use as input
offset
  position to start writing to
length
  limit on amount of data to upload
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  0, or -1 upon error.

### `virStorageVolWipe`

    int	virStorageVolWipe		(virStorageVolPtr vol,
    					 unsigned int flags)

Ensure data previously on a volume is not accessible to future reads

vol
  pointer to storage volume
flags
  extra flags; not used yet, so callers should always pass 0
Returns
  0 on success, or -1 on error

### `virStorageVolWipePattern`

    int	virStorageVolWipePattern	(virStorageVolPtr vol,
    					 unsigned int algorithm,
    					 unsigned int flags)

Similar to virStorageVolWipe, but one can choose between different wiping algorithms.

vol
  pointer to storage volume
algorithm
  one of virStorageVolWipeAlgorithm
flags
  future flags, use 0 for now
Returns
  0 on success, or -1 on error.

### `virStreamAbort`

    int	virStreamAbort			(virStreamPtr stream)

Request that the in progress data transfer be cancelled abnormally before the end of the stream has been reached. For output streams this can be used to inform the driver that the stream is being terminated early. For input streams this can be used to inform the driver that it should stop sending data.

stream
  pointer to the stream object
Returns
  0 on success, -1 upon error

### `virStreamEventAddCallback`

    int	virStreamEventAddCallback	(virStreamPtr stream,
    					 int events,
    					 virStreamEventCallback cb,
    					 void * opaque,
    					 virFreeCallback ff)

Register a callback to be notified when a stream becomes writable, or readable. This is most commonly used in conjunction with non-blocking data streams to integrate into an event loop

stream
  pointer to the stream object
events
  set of events to monitor
cb
  callback to invoke when an event occurs
opaque
  application defined data
ff
  callback to free @opaque data
Returns
  0 on success, -1 upon error

### `virStreamEventCallback`

    typedef void	(*virStreamEventCallback	)	(virStreamPtr stream,
    					 int events,
    					 void * opaque)

Callback for receiving stream events. The callback will be invoked once for each event which is pending.

stream
  stream on which the event occurred
events
  bitset of events from virEventHandleType constants
opaque
  user data registered with handle

### `virStreamEventRemoveCallback`

    int	virStreamEventRemoveCallback	(virStreamPtr stream)

Remove an event callback from the stream

stream
  pointer to the stream object
Returns
  0 on success, -1 on error

### `virStreamEventUpdateCallback`

    int	virStreamEventUpdateCallback	(virStreamPtr stream,
    					 int events)

Changes the set of events to monitor for a stream. This allows for event notification to be changed without having to unregister & register the callback completely. This method is guaranteed to succeed if a callback is already registered

stream
  pointer to the stream object
events
  set of events to monitor
Returns
  0 on success, -1 if no callback is registered

### `virStreamFinish`

    int	virStreamFinish			(virStreamPtr stream)

Indicate that there is no further data to be transmitted on the stream. For output streams this should be called once all data has been written. For input streams this should be called once virStreamRecv returns end-of-file.

This method is a synchronization point for all asynchronous errors, so if this returns a success code the application can be sure that all data has been successfully processed.

stream
  pointer to the stream object
Returns
  0 on success, -1 upon error

### `virStreamFree`

    int	virStreamFree			(virStreamPtr stream)

Decrement the reference count on a stream, releasing the stream object if the reference count has hit zero.

There must not be an active data transfer in progress when releasing the stream. If a stream needs to be disposed of prior to end of stream being reached, then the virStreamAbort function should be called first.

stream
  pointer to the stream object
Returns
  0 upon success, or -1 on error

### `virStreamNew`

    virStreamPtr	virStreamNew		(virConnectPtr conn,
    					 unsigned int flags)

Creates a new stream object which can be used to perform streamed I/O with other public API function.

When no longer needed, a stream object must be released with virStreamFree. If a data stream has been used, then the application must call virStreamFinish or virStreamAbort before free'ing to, in order to notify the driver of termination.

If a non-blocking data stream is required passed VIR_STREAM_NONBLOCK for flags, otherwise pass 0.

conn
  pointer to the connection
flags
  bitwise-OR of virStreamFlags
Returns
  the new stream, or NULL upon error

### `virStreamRecv`

    int	virStreamRecv			(virStreamPtr stream,
    					 char * data,
    					 size_t nbytes)

Reads a series of bytes from the stream. This method may block the calling application for an arbitrary amount of time.

Errors are not guaranteed to be reported synchronously with the call, but may instead be delayed until a subsequent call.

An example using this with a hypothetical file download API looks like

      virStreamPtr st = virStreamNew(conn, 0);
      int fd = open("demo.iso", O_WRONLY, 0600);

      virConnectDownloadFile(conn, "demo.iso", st);

      while (1) {
          char buf[1024];
          int got = virStreamRecv(st, buf, 1024);
          if (got < 0)
             break;
          if (got == 0) {
             virStreamFinish(st);
             break;
          }
          int offset = 0;
          while (offset < got) {
             int sent = write(fd, buf + offset, got - offset);
             if (sent < 0) {
                virStreamAbort(st);
                goto done;
             }
             offset += sent;
          }
      }
      if (virStreamFinish(st) < 0)
         ... report an error ....
    done:
      virStreamFree(st);
      close(fd);

stream
  pointer to the stream object
data
  buffer to read into from stream
nbytes
  size of @data buffer
Returns
  the number of bytes read, which may be less than requested. Returns 0 when the end of the stream is reached, at which time the caller should invoke virStreamFinish() to get confirmation of stream completion. Returns -1 upon error, at which time the stream will be marked as aborted, and the caller should now release the stream with virStreamFree. Returns -2 if there is no data pending to be read & the stream is marked as non-blocking.

### `virStreamRecvAll`

    int	virStreamRecvAll		(virStreamPtr stream,
    					 virStreamSinkFunc handler,
    					 void * opaque)

Receive the entire data stream, sending the data to the requested data sink. This is simply a convenient alternative to virStreamRecv, for apps that do blocking-I/O.

An example using this with a hypothetical file download API looks like

    int mysink(virStreamPtr st, const char *buf, int nbytes, void *opaque) {
        int *fd = opaque;

        return write(*fd, buf, nbytes);
    }

    virStreamPtr st = virStreamNew(conn, 0);
    int fd = open("demo.iso", O_WRONLY);

    virConnectUploadFile(conn, st);
    if (virStreamRecvAll(st, mysink, &fd) < 0) {
       ...report an error ...
       goto done;
    }
    if (virStreamFinish(st) < 0)
       ...report an error...
    virStreamFree(st);
    close(fd);

stream
  pointer to the stream object
handler
  sink callback for writing data to application
opaque
  application defined data
Returns
  0 if all the data was successfully received. The caller should invoke virStreamFinish(st) to flush the stream upon success and then virStreamFree Returns -1 upon any error, with virStreamAbort() already having been called, so the caller need only call virStreamFree()

### `virStreamRef`

    int	virStreamRef			(virStreamPtr stream)

Increment the reference count on the stream. For each additional call to this method, there shall be a corresponding call to virStreamFree to release the reference count, once the caller no longer needs the reference to this object.

stream
  pointer to the stream
Returns
  0 in case of success, -1 in case of failure

### `virStreamSend`

    int	virStreamSend			(virStreamPtr stream,
    					 const char * data,
    					 size_t nbytes)

Write a series of bytes to the stream. This method may block the calling application for an arbitrary amount of time. Once an application has finished sending data it should call virStreamFinish to wait for successful confirmation from the driver, or detect any error.

This method may not be used if a stream source has been registered.

Errors are not guaranteed to be reported synchronously with the call, but may instead be delayed until a subsequent call.

An example using this with a hypothetical file upload API looks like

      virStreamPtr st = virStreamNew(conn, 0);
      int fd = open("demo.iso", O_RDONLY);

      virConnectUploadFile(conn, "demo.iso", st);

      while (1) {
           char buf[1024];
           int got = read(fd, buf, 1024);
           if (got < 0) {
              virStreamAbort(st);
              break;
           }
           if (got == 0) {
              virStreamFinish(st);
              break;
           }
           int offset = 0;
           while (offset < got) {
              int sent = virStreamSend(st, buf+offset, got-offset);
              if (sent < 0) {
                 virStreamAbort(st);
                 goto done;
              }
              offset += sent;
           }
       }
       if (virStreamFinish(st) < 0)
          ... report an error ....
     done:
       virStreamFree(st);
       close(fd);

stream
  pointer to the stream object
data
  buffer to write to stream
nbytes
  size of @data buffer
Returns
  the number of bytes written, which may be less than requested. Returns -1 upon error, at which time the stream will be marked as aborted, and the caller should now release the stream with virStreamFree. Returns -2 if the outgoing transmit buffers are full & the stream is marked as non-blocking.

### `virStreamSendAll`

    int	virStreamSendAll		(virStreamPtr stream,
    					 virStreamSourceFunc handler,
    					 void * opaque)

Send the entire data stream, reading the data from the requested data source. This is simply a convenient alternative to virStreamSend, for apps that do blocking-I/O.

An example using this with a hypothetical file upload API looks like

    int mysource(virStreamPtr st, char *buf, int nbytes, void *opaque) {
        int *fd = opaque;

        return read(*fd, buf, nbytes);
    }

    virStreamPtr st = virStreamNew(conn, 0);
    int fd = open("demo.iso", O_RDONLY);

    virConnectUploadFile(conn, st);
    if (virStreamSendAll(st, mysource, &fd) < 0) {
       ...report an error ...
       goto done;
    }
    if (virStreamFinish(st) < 0)
       ...report an error...
    virStreamFree(st);
    close(fd);

stream
  pointer to the stream object
handler
  source callback for reading data from application
opaque
  application defined data
Returns
  0 if all the data was successfully sent. The caller should invoke virStreamFinish(st) to flush the stream upon success and then virStreamFree Returns -1 upon any error, with virStreamAbort() already having been called, so the caller need only call virStreamFree()

### `virStreamSinkFunc`

    typedef int	(*virStreamSinkFunc	)	(virStreamPtr st,
    					 const char * data,
    					 size_t nbytes,
    					 void * opaque)

The virStreamSinkFunc callback is used together with the virStreamRecvAll function for libvirt to provide the data that has been received.

The callback will be invoked multiple times, providing data in small chunks. The application should consume up 'nbytes' from the 'data' array of data and then return the number actual number of bytes consumed. The callback will continue to be invoked until it indicates the end of the stream has been reached. A return value of -1 at any time will abort the receive operation

st
  the stream object
data
  preallocated array to be filled with data
nbytes
  size of the data array
opaque
  optional application provided data
Returns
  the number of bytes consumed or -1 upon error

### `virStreamSourceFunc`

    typedef int	(*virStreamSourceFunc	)	(virStreamPtr st,
    					 char * data,
    					 size_t nbytes,
    					 void * opaque)

The virStreamSourceFunc callback is used together with the virStreamSendAll function for libvirt to obtain the data that is to be sent.

The callback will be invoked multiple times, fetching data in small chunks. The application should fill the 'data' array with up to 'nbytes' of data and then return the number actual number of bytes. The callback will continue to be invoked until it indicates the end of the source has been reached by returning 0. A return value of -1 at any time will abort the send operation

st
  the stream object
data
  preallocated array to be filled with data
nbytes
  size of the data array
opaque
  optional application provided data
Returns
  the number of bytes filled, 0 upon end of file, or -1 upon error

### `virTypedParamsAddBoolean`

    int	virTypedParamsAddBoolean	(virTypedParameterPtr * params,
    					 int * nparams,
    					 int * maxparams,
    					 const char * name,
    					 int value)

Adds new parameter called @name with boolean type and sets its value to @value. If @params array points to NULL or to a space that is not large enough to accommodate the new parameter (@maxparams < @nparams + 1), the function allocates more space for it and updates @maxparams. On success, @nparams is incremented by one. The function fails with VIR_ERR_INVALID_ARG error if the parameter already exists in @params.

params
  pointer to the array of typed parameters
nparams
  number of parameters in the @params array
maxparams
  maximum number of parameters that can be stored in @params array without allocating more memory
name
  name of the parameter to find
value
  the value to store into the new parameter
Returns
  0 on success, -1 on error.

### `virTypedParamsAddDouble`

    int	virTypedParamsAddDouble		(virTypedParameterPtr * params,
    					 int * nparams,
    					 int * maxparams,
    					 const char * name,
    					 double value)

Adds new parameter called @name with double type and sets its value to @value. If @params array points to NULL or to a space that is not large enough to accommodate the new parameter (@maxparams < @nparams + 1), the function allocates more space for it and updates @maxparams. On success, @nparams is incremented by one. The function fails with VIR_ERR_INVALID_ARG error if the parameter already exists in @params.

params
  pointer to the array of typed parameters
nparams
  number of parameters in the @params array
maxparams
  maximum number of parameters that can be stored in @params array without allocating more memory
name
  name of the parameter to find
value
  the value to store into the new parameter
Returns
  0 on success, -1 on error.

### `virTypedParamsAddFromString`

    int	virTypedParamsAddFromString	(virTypedParameterPtr * params,
    					 int * nparams,
    					 int * maxparams,
    					 const char * name,
    					 int type,
    					 const char * value)

Adds new parameter called @name with the requested @type and parses its value from the @value string. If the requested type is string, the function creates its own copy of the @value string, which needs to be freed using virTypedParamsFree or virTypedParamsClear. If @params array points to NULL or to a space that is not large enough to accommodate the new parameter (@maxparams < @nparams + 1), the function allocates more space for it and updates @maxparams. On success, @nparams is incremented by one. The function fails with VIR_ERR_INVALID_ARG error if the parameter already exists in @params.

params
  pointer to the array of typed parameters
nparams
  number of parameters in the @params array
maxparams
  maximum number of parameters that can be stored in @params array without allocating more memory
name
  name of the parameter to find
type
  type of the parameter
value
  the value to store into the new parameter encoded as a string
Returns
  0 on success, -1 on error.

### `virTypedParamsAddInt`

    int	virTypedParamsAddInt		(virTypedParameterPtr * params,
    					 int * nparams,
    					 int * maxparams,
    					 const char * name,
    					 int value)

Adds new parameter called @name with int type and sets its value to @value. If @params array points to NULL or to a space that is not large enough to accommodate the new parameter (@maxparams < @nparams + 1), the function allocates more space for it and updates @maxparams. On success, @nparams is incremented by one. The function fails with VIR_ERR_INVALID_ARG error if the parameter already exists in @params.

params
  pointer to the array of typed parameters
nparams
  number of parameters in the @params array
maxparams
  maximum number of parameters that can be stored in @params array without allocating more memory
name
  name of the parameter to find
value
  the value to store into the new parameter
Returns
  0 on success, -1 on error.

### `virTypedParamsAddLLong`

    int	virTypedParamsAddLLong		(virTypedParameterPtr * params,
    					 int * nparams,
    					 int * maxparams,
    					 const char * name,
    					 long long value)

Adds new parameter called @name with long long int type and sets its value to @value. If @params array points to NULL or to a space that is not large enough to accommodate the new parameter (@maxparams < @nparams + 1), the function allocates more space for it and updates @maxparams. On success, @nparams is incremented by one. The function fails with VIR_ERR_INVALID_ARG error if the parameter already exists in @params.

params
  pointer to the array of typed parameters
nparams
  number of parameters in the @params array
maxparams
  maximum number of parameters that can be stored in @params array without allocating more memory
name
  name of the parameter to find
value
  the value to store into the new parameter
Returns
  0 on success, -1 on error.

### `virTypedParamsAddString`

    int	virTypedParamsAddString		(virTypedParameterPtr * params,
    					 int * nparams,
    					 int * maxparams,
    					 const char * name,
    					 const char * value)

Adds new parameter called @name with char * type and sets its value to @value. The function creates its own copy of @value string, which needs to be freed using virTypedParamsFree or virTypedParamsClear. If @params array points to NULL or to a space that is not large enough to accommodate the new parameter (@maxparams < @nparams + 1), the function allocates more space for it and updates @maxparams. On success, @nparams is incremented by one. The function fails with VIR_ERR_INVALID_ARG error if the parameter already exists in @params.

params
  pointer to the array of typed parameters
nparams
  number of parameters in the @params array
maxparams
  maximum number of parameters that can be stored in @params array without allocating more memory
name
  name of the parameter to find
value
  the value to store into the new parameter
Returns
  0 on success, -1 on error.

### `virTypedParamsAddUInt`

    int	virTypedParamsAddUInt		(virTypedParameterPtr * params,
    					 int * nparams,
    					 int * maxparams,
    					 const char * name,
    					 unsigned int value)

Adds new parameter called @name with unsigned int type and sets its value to @value. If @params array points to NULL or to a space that is not large enough to accommodate the new parameter (@maxparams < @nparams + 1), the function allocates more space for it and updates @maxparams. On success, @nparams is incremented by one. The function fails with VIR_ERR_INVALID_ARG error if the parameter already exists in @params.

params
  pointer to the array of typed parameters
nparams
  number of parameters in the @params array
maxparams
  maximum number of parameters that can be stored in @params array without allocating more memory
name
  name of the parameter to find
value
  the value to store into the new parameter
Returns
  0 on success, -1 on error.

### `virTypedParamsAddULLong`

    int	virTypedParamsAddULLong		(virTypedParameterPtr * params,
    					 int * nparams,
    					 int * maxparams,
    					 const char * name,
    					 unsigned long long value)

Adds new parameter called @name with unsigned long long type and sets its value to @value. If @params array points to NULL or to a space that is not large enough to accommodate the new parameter (@maxparams < @nparams + 1), the function allocates more space for it and updates @maxparams. On success, @nparams is incremented by one. The function fails with VIR_ERR_INVALID_ARG error if the parameter already exists in @params.

params
  pointer to the array of typed parameters
nparams
  number of parameters in the @params array
maxparams
  maximum number of parameters that can be stored in @params array without allocating more memory
name
  name of the parameter to find
value
  the value to store into the new parameter
Returns
  0 on success, -1 on error.

### `virTypedParamsClear`

    void	virTypedParamsClear		(virTypedParameterPtr params,
    					 int nparams)

Frees all memory used by string parameters. The memory occupied by @params is not freed; use virTypedParamsFree if you want it to be freed too.

params
  the array of typed parameters
nparams
  number of parameters in the @params array

### `virTypedParamsFree`

    void	virTypedParamsFree		(virTypedParameterPtr params,
    					 int nparams)

Frees all memory used by string parameters and the memory occupied by @params.

params
  the array of typed parameters
nparams
  number of parameters in the @params array

### `virTypedParamsGet`

    virTypedParameterPtr	virTypedParamsGet	(virTypedParameterPtr params,
    						 int nparams,
    						 const char * name)

Finds typed parameter called @name.

params
  array of typed parameters
nparams
  number of parameters in the @params array
name
  name of the parameter to find
Returns
  pointer to the parameter or NULL if it does not exist in @params. This function does not raise an error, even when returning NULL.

### `virTypedParamsGetBoolean`

    int	virTypedParamsGetBoolean	(virTypedParameterPtr params,
    					 int nparams,
    					 const char * name,
    					 int * value)

Finds typed parameter called @name and store its boolean value in @value. The function fails with VIR_ERR_INVALID_ARG error if the parameter does not have the expected type. By passing NULL as @value, the function may be used to check presence and type of the parameter.

params
  array of typed parameters
nparams
  number of parameters in the @params array
name
  name of the parameter to find
value
  where to store the parameter's value
Returns
  1 on success, 0 when the parameter does not exist in @params, or -1 on error.

### `virTypedParamsGetDouble`

    int	virTypedParamsGetDouble		(virTypedParameterPtr params,
    					 int nparams,
    					 const char * name,
    					 double * value)

Finds typed parameter called @name and store its double value in @value. The function fails with VIR_ERR_INVALID_ARG error if the parameter does not have the expected type. By passing NULL as @value, the function may be used to check presence and type of the parameter.

params
  array of typed parameters
nparams
  number of parameters in the @params array
name
  name of the parameter to find
value
  where to store the parameter's value
Returns
  1 on success, 0 when the parameter does not exist in @params, or -1 on error.

### `virTypedParamsGetInt`

    int	virTypedParamsGetInt		(virTypedParameterPtr params,
    					 int nparams,
    					 const char * name,
    					 int * value)

Finds typed parameter called @name and store its int value in @value. The function fails with VIR_ERR_INVALID_ARG error if the parameter does not have the expected type. By passing NULL as @value, the function may be used to check presence and type of the parameter.

params
  array of typed parameters
nparams
  number of parameters in the @params array
name
  name of the parameter to find
value
  where to store the parameter's value
Returns
  1 on success, 0 when the parameter does not exist in @params, or -1 on error.

### `virTypedParamsGetLLong`

    int	virTypedParamsGetLLong		(virTypedParameterPtr params,
    					 int nparams,
    					 const char * name,
    					 long long * value)

Finds typed parameter called @name and store its long long int value in @value. The function fails with VIR_ERR_INVALID_ARG error if the parameter does not have the expected type. By passing NULL as @value, the function may be used to check presence and type of the parameter.

params
  array of typed parameters
nparams
  number of parameters in the @params array
name
  name of the parameter to find
value
  where to store the parameter's value
Returns
  1 on success, 0 when the parameter does not exist in @params, or -1 on error.

### `virTypedParamsGetString`

    int	virTypedParamsGetString		(virTypedParameterPtr params,
    					 int nparams,
    					 const char * name,
    					 const char ** value)

Finds typed parameter called @name and store its char * value in @value. The function does not create a copy of the string and the caller must not free the string @value points to. The function fails with VIR_ERR_INVALID_ARG error if the parameter does not have the expected type. By passing NULL as @value, the function may be used to check presence and type of the parameter.

params
  array of typed parameters
nparams
  number of parameters in the @params array
name
  name of the parameter to find
value
  where to store the parameter's value
Returns
  1 on success, 0 when the parameter does not exist in @params, or -1 on error.

### `virTypedParamsGetUInt`

    int	virTypedParamsGetUInt		(virTypedParameterPtr params,
    					 int nparams,
    					 const char * name,
    					 unsigned int * value)

Finds typed parameter called @name and store its unsigned int value in @value. The function fails with VIR_ERR_INVALID_ARG error if the parameter does not have the expected type. By passing NULL as @value, the function may be used to check presence and type of the parameter.

params
  array of typed parameters
nparams
  number of parameters in the @params array
name
  name of the parameter to find
value
  where to store the parameter's value
Returns
  1 on success, 0 when the parameter does not exist in @params, or -1 on error.

### `virTypedParamsGetULLong`

    int	virTypedParamsGetULLong		(virTypedParameterPtr params,
    					 int nparams,
    					 const char * name,
    					 unsigned long long * value)

Finds typed parameter called @name and store its unsigned long long int value in @value. The function fails with VIR_ERR_INVALID_ARG error if the parameter does not have the expected type. By passing NULL as @value, the function may be used to check presence and type of the parameter.

params
  array of typed parameters
nparams
  number of parameters in the @params array
name
  name of the parameter to find
value
  where to store the parameter's value
Returns
  1 on success, 0 when the parameter does not exist in @params, or -1 on error.