diff options
Diffstat (limited to 'beagle/debian-rfs/etc/init.d/sendsigs')
| -rwxr-xr-x | beagle/debian-rfs/etc/init.d/sendsigs | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/beagle/debian-rfs/etc/init.d/sendsigs b/beagle/debian-rfs/etc/init.d/sendsigs new file mode 100755 index 0000000..f5c33c5 --- /dev/null +++ b/beagle/debian-rfs/etc/init.d/sendsigs @@ -0,0 +1,126 @@ +#! /bin/sh +### BEGIN INIT INFO +# Provides: sendsigs +# Required-Start: +# Required-Stop: umountnfs +# Default-Start: +# Default-Stop: 0 6 +# Short-Description: Kill all remaining processes. +# Description: +### END INIT INFO + +PATH=/sbin:/usr/sbin:/bin:/usr/bin + +. /lib/lsb/init-functions + +# Make it possible to see who the misbehaving processes are +report_unkillable() { + if [ -x /usr/bin/pstree ] ; then + echo "Currently running processes (pstree):" + pstree + elif [ -x /bin/ps ] ; then + echo "Currently running processes (ps):" + ps -ef + fi +} + +do_stop () { + OMITPIDS= + + # The /var/run/sendsigs.omit file is used to be compatible + # with Ubuntu. + for omitfile in /var/run/sendsigs.omit /lib/init/rw/sendsigs.omit; do + if [ -e $omitfile ]; then + for pid in $(cat $omitfile); do + OMITPIDS="${OMITPIDS:+$OMITPIDS }-o $pid" + done + fi + done + + # Load sendsigs.omit.d/packagename files too, to make it + # possible for scripts that need to modify the list of pids at + # run time without race conditions. + if [ -d /lib/init/rw/sendsigs.omit.d/ ]; then + for pidfile in /lib/init/rw/sendsigs.omit.d/*; do + [ -f "$pidfile" ] || continue + for pid in $(cat $pidfile); do + OMITPIDS="${OMITPIDS:+$OMITPIDS }-o $pid" + done + done + fi + + # Upstart jobs have their own "stop on" clauses that sends + # SIGTERM/SIGKILL just like this, so if they're still running, + # they're supposed to be + if [ -x /sbin/initctl ]; then + for pid in $(initctl list | sed -n -e "/process [0-9]/s/.*process //p"); do + OMITPIDS="${OMITPIDS:+$OMITPIDS }-o $pid" + done + fi + + # Flush the kernel I/O buffer before we start to kill + # processes, to make sure the IO of already stopped services to + # not slow down the remaining processes to a point where they + # are accidentily killed with SIGKILL because they did not + # manage to shut down in time. + sync + + # Kill all processes. + log_action_begin_msg "Asking all remaining processes to terminate" + killall5 -15 $OMITPIDS # SIGTERM + log_action_end_msg 0 + alldead="" + for seq in 1 2 3 4 5 6 7 8 9 10; do + # use SIGCONT/signal 18 to check if there are + # processes left. No need to check the exit code + # value, because either killall5 work and it make + # sense to wait for processes to die, or it fail and + # there is nothing to wait for. + + # did an upstart job start since we last polled initctl? check + # again on each loop and add any new jobs (e.g., plymouth) to + # the list. If we did miss one starting up, this beats waiting + # 10 seconds before shutting down. + if [ -x /sbin/initctl ]; then + for pid in $(initctl list | sed -n -e "/process [0-9]/s/.*process //p"); do + OMITPIDS="${OMITPIDS:+$OMITPIDS }-o $pid" + done + fi + if killall5 -18 $OMITPIDS ; then + : + else + alldead=1 + break + fi + + sleep 1 + done + if [ -z "$alldead" ] ; then + report_unkillable + log_action_begin_msg "Killing all remaining processes" + killall5 -9 $OMITPIDS # SIGKILL + log_action_end_msg 1 + else + log_action_begin_msg "All processes ended within $seq seconds." + log_action_end_msg 0 + fi +} + +case "$1" in + start) + # No-op + ;; + restart|reload|force-reload) + echo "Error: argument '$1' not supported" >&2 + exit 3 + ;; + stop) + do_stop + ;; + *) + echo "Usage: $0 start|stop" >&2 + exit 3 + ;; +esac + +: |
