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|
#! /bin/sh
#
### BEGIN INIT INFO
# Provides: mcelog
# Required-Start: $syslog $local_fs $remote_fs
# Required-Stop: $remote_fs
# Should-Start:
# Should-Stop:
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: Machine Check Exceptions (MCE) collector & decoder
# Description: Machine Check Exceptions are raised by the CPU whenever
# it encounters an hardware error. mcelog collects and
# decodes Machine Check Exceptions as they happen.
### END INIT INFO
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
DAEMON=/usr/sbin/mcelog
NAME=mcelog
DESC="Machine Check Exceptions decoder"
TRIGGER=/sys/devices/system/machinecheck/machinecheck0/trigger
RUN_MODE=daemon
test -x $DAEMON || exit 0
if [ ! -r /dev/mcelog ]; then
echo "/dev/mcelog not active"
exit 0
fi
[ -r /etc/default/mcelog ] && . /etc/default/mcelog
. /lib/lsb/init-functions
set -e
# Trigger functions
start_trigger()
{
if start-stop-daemon --stop --test --quiet --exec $DAEMON; then
echo "WARNING: mcelog daemon running, not setting up MCE trigger"
exit 1
fi
echo -n "Setting up Machine Check Exceptions trigger..."
if [ -e $TRIGGER ] && $DAEMON --is-cpu-supported ; then
echo $DAEMON > $TRIGGER
else
echo " not supported on this machine."
exit 0
fi
echo " done."
echo -n "Running $DESC..."
$DAEMON
echo " done."
}
stop_trigger()
{
echo -n "Clearing Machine Check Exceptions trigger..."
if [ -e $TRIGGER ]; then
echo "" > $TRIGGER
else
echo " not supported on this machine."
exit 0
fi
echo " done."
}
trigger_status()
{
if [ "$(cat $TRIGGER)" = $DAEMON ]; then
echo "Machine Check Exceptions collected by mcelog."
exit 0
else
if [ ! -e $TRIGGER ]; then
echo "Machine Check Exceptions not collected by mcelog; trigger mode not supported."
else
echo "Machine Check Exceptions not collected by mcelog."
fi
exit 1
fi
}
# Daemon functions
start_daemon()
{
# Check & clear mcelog trigger
if [ -e $TRIGGER ] && [ "$(cat $TRIGGER)" = $DAEMON ]; then
echo "" > $TRIGGER
fi
if $DAEMON --is-cpu-supported ; then
echo -n "Starting $DESC: "
start-stop-daemon --start --quiet --exec $DAEMON -- --daemon $DAEMON_OPTS
echo "$NAME."
fi
}
stop_daemon()
{
echo -n "Stopping $DESC: "
start-stop-daemon --stop --oknodo --quiet --exec $DAEMON
echo "$NAME."
}
restart_daemon()
{
echo -n "Restarting $DESC: "
# Check & clear mcelog trigger
if [ -e $TRIGGER ] && [ "$(cat $TRIGGER)" = $DAEMON ]; then
echo "" > $TRIGGER
fi
start-stop-daemon --stop --oknodo --quiet --exec $DAEMON
if $DAEMON --is-cpu-supported ; then
sleep 1
start-stop-daemon --start --quiet --exec $DAEMON -- --daemon $DAEMON_OPTS
fi
echo "$NAME."
}
daemon_status()
{
echo -n "$NAME is "
if start-stop-daemon --stop --test --quiet --exec $DAEMON; then
echo "running."
else
echo "not running."
exit 1
fi
}
case "$1" in
start)
if [ "$RUN_MODE" = "trigger" ]; then
start_trigger
else
start_daemon
fi
;;
stop)
if [ "$RUN_MODE" = "trigger" ]; then
stop_trigger
else
stop_daemon
fi
;;
restart)
if [ "$RUN_MODE" = "trigger" ]; then
start_trigger
else
restart_daemon
fi
;;
force-reload)
if [ "$RUN_MODE" = "trigger" ]; then
[ -e $TRIGGER ] && [ "$(cat $TRIGGER)" = $DAEMON ] && $0 restart || exit 0
else
start-stop-daemon --stop --test --quiet --exec $DAEMON \
&& restart_daemon \
|| exit 0
fi
;;
status)
if [ "$RUN_MODE" = "trigger" ]; then
trigger_status
else
daemon_status
fi
;;
*)
N=/etc/init.d/$NAME
echo "Usage: $N {start|stop|restart|force-reload}" >&2
exit 1
;;
esac
exit 0
|
