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[packages/mcelog.git] / mcelog.init

#!/bin/sh
#
# mcelog	mcelog hardware error logging
#
# chkconfig:	35 02 98
#
# description:	Start the mcelog hardware error logging. \
#               This logs and handles CPU hardware errors on x86 systems.
#
# processname:	mcelog
# config:
# pidfile:
#
# $Id$

# Source function library
. /etc/rc.d/init.d/functions

# mcelog mode
# valid values: daemon, trigger, cron
# Recommended value daemon
MCELOG_MODE=daemon

# additional options to pass to the daemon
# this only works in daemon mode
# see the manpage for details. settings can be also
# set in /etc/mcelog/mcelog.conf
MCELOG_OPTIONS=""

# Get service config - may override defaults
[ -f /etc/sysconfig/mcelog ] && . /etc/sysconfig/mcelog

# private settings
# TODO: what about other cpu's?
TRIGGER=/sys/devices/system/machinecheck/machinecheck0/trigger

# configtest itself
# must return non-zero if check failed
# output is discarded if checkconfig is ran without details
configtest() {
	if [ ! -r /dev/mcelog ]; then
	   	nls "%s not active" /dev/mcelog
		return 1
	fi

	case "$MCELOG_MODE" in
	daemon)
		;;
	trigger)
		if [ ! -f "$TRIGGER" ] ; then
			nls "No machine check capability"
			return 1
		fi
		;;
	cron)
		nls "mcelog not started in cron mode"
		return 0
		;;
	*)
		nls "Unknown mcelog mode %s. Valid are: daemon/trigger/cron" $MCELOG_MODE
		return 1
	esac

	return 0
}

# wrapper for configtest
checkconfig() {
	local details=${1:-0}

	if [ $details = 1 ]; then
		# run config test and display report (status action)
		show "Checking %s configuration" "MCE Log"; busy
		local out
		out=$(configtest 2>&1)
		RETVAL=$?
		if [ $RETVAL = 0 ]; then
			ok
		else
			fail
		fi
		[ "$out" ] && echo >&2 "$out"
	else
		# run config test and abort with nice message if failed
		# (for actions checking status before action).
		configtest >/dev/null 2>&1
		RETVAL=$?
		if [ $RETVAL != 0 ]; then
			show "Checking %s configuration" "MCE Log"; fail
			nls 'Configuration test failed. See details with %s "checkconfig"' $0
			exit $RETVAL
		fi
	fi
}

start() {
	# Check if the service is already running?
	if [ -f /var/lock/subsys/mcelog ]; then
		msg_already_running "MCE Log"
		return
	fi

	checkconfig

	case "$MCELOG_MODE" in
	daemon)
		msg_starting "MCE Log"
		daemon /usr/sbin/mcelog --daemon $MCELOG_OPTIONS
		RETVAL=$?
		[ $RETVAL -eq 0 ] && touch /var/lock/subsys/mcelog
		;;
	trigger)
		echo $MCELOG > "$TRIGGER"
		touch /var/lock/subsys/mcelog
		;;
	esac
}

stop() {
	if [ ! -f /var/lock/subsys/mcelog ]; then
		msg_not_running "MCE Log"
		return
	fi

	case "$MCELOG_MODE" in
	daemon)
		# Stop daemons.
		msg_stopping "MCE Log"
		killproc mcelog -TERM
		rm -f /var/lock/subsys/mcelog
		;;
	trigger)
		echo "" > "$TRIGGER"
		rm -f /var/lock/subsys/mcelog
		;;
	esac
}

condrestart() {
	if [ ! -f /var/lock/subsys/mcelog ]; then
		msg_not_running "MCE Log"
		RETVAL=$1
		return
	fi

	checkconfig
	stop
	start
}

rc_status() {
	case "$MCELOG_MODE" in
	daemon)
		status mcelog
		RETVAL=$?
		;;
	esac
}

RETVAL=0
# See how we were called.
case "$1" in
  start)
	start
	;;
  stop)
	stop
	;;
  restart)
	checkconfig
	stop
	start
	;;
  try-restart)
	condrestart 0
	;;
  force-reload)
	condrestart 7
	;;
  checkconfig|configtest)
	checkconfig 1
	;;
  status)
	rc_status
	;;
  *)
	msg_usage "$0 {start|stop|restart|try-restart|reload|force-reload|checkconfig|status}"
	exit 3
esac

exit $RETVAL