#!/bin/sh

#

# chkconfig: 2345 11 60

# description: start, stop, or query ipmi system monitoring tools

# config: /etc/sysconfig/ipmi

#

# For Redhat, Fedora, or similar systems.  Handles both 2.4 and 2.6

# configurations.  Requires an /etc/sysconfig/ipmi file to function,

# see below.

#

# Phil Hollenback

# philiph@pobox.com

# Source function library.

. /etc/init.d/functions

# Exit silently if we don't have a sysconfig file,

# and read IPMI setting from it to determine whether or

# not to continue.

# The only current setting is ipmi={YES|NO}, whether or not

# to enable IPMI.

[ -f /etc/sysconfig/ipmi ] || exit 0

. /etc/sysconfig/ipmi

[ "${IPMI}" = "yes" ] || exit 0

RETVAL=0

start() {

	echo -n $"Starting ipmi: "

	# If ipmidev isn't listed in /proc/devices, try

	# loading the modules.

	if ! grep -q ipmidev /proc/devices

	then

	    /sbin/modprobe ipmi_msghandler || RETVAL=1

	    /sbin/modprobe ipmi_devintf || RETVAL=1

	    # Try loading new driver module, fall back to old

	    # module if that fails.

	    if ! /sbin/modprobe ipmi_si >/dev/null 2>&1

	    then

		/sbin/modprobe ipmi_si_drv || RETVAL=1

	    fi

	fi

	# If ipmidev still isn't listed in /proc/devices after we load

	# modules, this just isn't going to work.  Set RETVAL to mark

	# this failure.

	grep -q ipmidev /proc/devices || RETVAL=1

	# remove old device file always

	# in case ipmi gets assigned new dynamic major number from kernel

	if [ -c /dev/ipmi0 ]; then

	    rm -f /dev/ipmi0

	fi

	# Check if the device file exists and create if not.

	if [ ! -c /dev/ipmi0 ] && [ $RETVAL -eq 0 ]

	then

	    major=$(awk '/ ipmidev$/{print $1}' /proc/devices)

	    /bin/mknod -m 0600 /dev/ipmi0 c $major 0 || RETVAL=1

	fi

	if [ $RETVAL -eq 0 ] && touch /var/lock/subsys/ipmi ; then

		echo_success

		echo

	else

		echo_failure

		echo

	fi

}

stop() {

	echo -n $"Shutting down ipmi: "

	# Stop doesn't actually do anything because we currently don't

	# unload ipmi modules on stop.  That might change in the future

 	# if we decide unloading the ipmi modules is safe.

	RETVAL=0

	if [ $RETVAL -eq 0 ] && rm -f /var/lock/subsys/ipmi ; then

		echo_success

		echo

	else

		echo_failure

		echo

	fi

}

dostatus() {

	# Extract cpu temperatures from ipmitool output.

	# Abort if we don't have the ipmitool program.

	if ! /usr/bin/ipmitool -V >/dev/null

	then

	    echo "/usr/bin/ipmitool not found!" >&2

	    exit 1

	fi

	# Abort if ipmi isn't loaded.

	if ! grep -q ipmidev /proc/devices

	then

	    echo "ipmi not listed in /proc/devices!" >&2

	    exit 1

	fi

	# Check if we are running on a v1.0 IPMI system, and

	# change our processor search string appropriately.

	if /usr/bin/ipmitool -I open bmc info | \

		grep -q "IPMI Version.*1.0"

	then

	    IpmiVersion="1.0"

	fi

	# Determine # of running processors

	NumProcs=$(grep -c processor /proc/cpuinfo)

	if [ $NumProcs -eq 0 ]

	then

	    echo "Can't determine number of processors!" >&2

	    exit 1

	fi

	# Now build the query string.  Concatenate it into

	# one string because that's more efficient on 2.4 systems.

	Count=1

	TempString=""

	while [ $Count -le $NumProcs ]

	do

	    if [ x$IpmiVersion  = x"1.0" ]

	    then

		TempString="$TempString CPU\ $Count"

	    else

		TempString="$TempString Processor$Count\ Temp"

	    fi

	    Count=$((Count + 1))

	done

	# building TempString like this and eval'ing it is ugly, but

	# it's the only way I could make the quoting work.  Sorry.

	TempString="/usr/bin/ipmitool -I open sensor get $TempString"

	eval $TempString | awk -v "c=$Count" '

BEGIN {

   n = 1

}

/Sensor Reading/ {

   printf "CPU%s Temp: %s\n",n,$4

   n++

}

END {

   if ( n != c) {

	printf "Error: found %s CPUs, but got temps for %s\n",--c,--n >"/dev/stderr"

	exit 1

   }

   exit 0

}'

	RETVAL=$((RETVAL + $?))

	return $RETVAL

}

restart() {

	stop

	start

	RETVAL=$?

}

condrestart() {

	[ -e /var/lock/subsys/ipmi ] && restart || :

}

remove () {

	# Actually remove the drivers.  Don't do during stop in case

	# this causes system to become unstable (a la lm_sensors)

	if /sbin/lsmod | awk '{print $1}' | grep -q ipmi_

	then

	    # Try removing both 2.4 and 2.6 modules.

	    /sbin/rmmod ipmi_si 2>/dev/null

	    /sbin/rmmod ipmi_si_drv 2>/dev/null

	    /sbin/rmmod ipmi_devintf

	    /sbin/rmmod ipmi_msghandler

	else

	    echo "No ipmi modules loaded!" >&2

	    RETVAL=1

	    return $RETVAL

	fi

	# Wait a sec to give modules time to unload.

	sleep 1

	# Check if we failed to remove any modules, and complain if so.

	if /sbin/lsmod | awk '{print $1}' | grep -q ipmi_

	then

	    echo "ipmi modules still loaded!" >&2

	    RETVAL=1

	    return $RETVAL

	fi

}

# See how we were called.

case "$1" in

  start)

	start

	;;

  stop)

	stop

	;;

  status)

	dostatus

	;;

  restart|reload)

	restart

	;;

  condrestart)

	condrestart

	;;

  remove)

	remove

	;;

  *)

	echo "Usage: ipmi {start|stop|status|restart|condrestart|remove}"

	exit 1

esac

exit $RETVAL