#!@BASH@
#
# @INITRDDIR@/sensord
#
# sensord       This shell script takes care of starting and stopping
#               sensord, the lm_sensors hardware health monitoring daemon.
#
# Here is the sensors service for SysV init, based on lm_sensors-2.5.5-sensors
# from Mandrake lm_sensors source RPM. It is modified according to recommendations
# for RedHat initscripts. The drivers starting part is taken from alsasound
# service. To configure this service one should put appropriate "alias i2c-bus-0
# xxx" and "alias i2c-sensors-chip-0 xxx" in /etc/modules.conf. The rest should be
# self explaining.
#
# You put it into /etc/rc.d/init.d/, you make a symlink (probably using
# chkconfig, ntsysv, tksysv or serviceconf program) named S95xxx and K05xxx
# into /etc/rc#.d (where # is the number of runlevel), and sensors service
# (which starts lm_sensors modules, runs sensors -s and starts sensord)
# will be started automatically at startup/reboot and stopped at shutdown.
# One could also start/stop service manually.
#
# This service was tested for RedHat 7.2 only.
# Jakub Narębski, Poland
#

# chkconfig: 2345 05 95
# processname: sensord
# config: @SYSCONFDIR@/sensors.conf
# pidfile: /var/run/sensord.pid
# description: Sensors is a sensors daemon which can be used to alert you \
#              in the event of a hardware health monitoring alarm.

# Source function library.
. @INITRDDIR@/functions

# Set default return value to 0 (success)
RETVAL=0
# Add @SBINDIR@ (sensord) and @BINDIR@ (sensors) to PATH if necessary
echo "$PATH" | grep -q @SBINDIR@ || PATH=$PATH:@SBINDIR@
echo "$PATH" | grep -q  @BINDIR@ || PATH=$PATH:@BINDIR@
export PATH

# Modules to load from modules.conf (modules configuration)
i2c_bus_drivers=´modprobe -c | \
  awk ´/^[[:space:]]*alias[[:space:]]+i2c-bus-[[:digit:]]/ { print $3 }´´
i2c_chip_drivers=´modprobe -c | \
  awk ´/^[[:space:]]*alias[[:space:]]+i2c-sensors-chip-[[:digit:]]/ { print $3
}´´

# Configuration of sensord
interval=1m      # interval between scanning for sensor alarms
log_interval=30m # interval between logging all sensor readings

# Check that we use kernel for which lm_sensors-drivers was installed
[ ´uname -r´ = @MVERSION@ ] || exit 0

# Check that lm_sensors is installed.
[ -x @SBINDIR@/sensord ] || exit 0
[ -x  @BINDIR@/sensors ] || exit 0

echo_status()
{
        if [ $1 -eq 0 ]; then
                echo_success
        else
                echo_failure
        fi
        echo
}

start()
{
        # Start modules
        echo "Starting I2C bus (adapter) drivers: "
        for driver in $i2c_bus_drivers; do
                echo -n "Starting I2C driver: $driver "
                /sbin/modprobe ´echo $driver´
                echo_status $?
        done
        echo "Starting I2C chip (sensors) drivers: "
        for driver in $i2c_chip_drivers; do
                echo -n "Starting I2C driver: $driver "
                /sbin/modprobe $(echo $driver)
                echo_status $?
        done
        # Set Alarm
        echo -n "Configuring sensors: "
        sensors -s && sleep 2
        echo_status $?
        # Start daemons.
        echo -n $"Starting sensord: "
        daemon sensord -i $interval -l $log_interval
        RETVAL=$?

        [ $RETVAL -eq 0 ] && touch /var/lock/subsys/sensors

        echo
        return $RETVAL
}

stop()
{
        # Stop daemons.
        echo -n $"Shutting down sensord: "
        killproc sensord
        RETVAL=$?

        echo
        # Remove modules
        drivers=´echo "$i2c_chip_drivers $i2c_bus_drivers" | \
          tr -s "[:space:]\n" " "´
        echo -n "Removing I2C drivers: $drivers"
        /sbin/modprobe -r -q $drivers
        echo_status $?

        echo
        [ $RETVAL -eq 0 ] && rm -f /var/lock/subsys/sensors

        return $RETVAL
}

reload()
{
        # Reread configuration file
        sensors -s

        return $?
}

# See how we were called.
case "$1" in
  start)
        start
        ;;
  stop)
        stop
        ;;
  status)
        status sensord
        ;;
  restart)
        stop
        start
        ;;
  reload)
        reload
        ;;
  condrestart)
        [ -e /var/lock/subsys/sensors ] && restart || :
        ;;
  *)
        echo "Usage: sensors {start|stop|restart|reload|condrestart|status}"
        exit 1
        ;;
esac

exit $?
