first commit

etc_org/init.d/sendsigs

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+#! /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() {
+	[ -x /usr/share/apport/unkillable_shutdown ] || return
+	if [ ! -e /etc/default/apport ] || ! grep -q '^enabled[[:space:]]*=[[:space:]]*1' /etc/default/apport; then
+		return
+	fi
+	/usr/share/apport/unkillable_shutdown $OMITPIDS
+}
+
+upstart_killed_jobs () {
+	initctl list | grep 'stop/killed'
+}
+
+upstart_jobs () {
+	initctl list | grep -E '(start/|stop/killed)' | sed -n -e "/process [0-9]/s/.*process //p"
+}
+
+do_stop () {
+	OMITPIDS=
+
+	for omitfile in /run/sendsigs.omit; do
+		if [ -e $omitfile ]; then
+			for pid in $(cat $omitfile); do
+				OMITPIDS="${OMITPIDS:+$OMITPIDS }-o $pid"
+			done
+		fi
+	done
+
+	# Load sendsigs.omit.d/packagename files too, to make it
+	# possible for scripts that need to modify the list of pids at
+	# run time without race conditions.
+	for omitdir in /run/sendsigs.omit.d; do
+		if [ -d "${omitdir}" ]; then
+			for pidfile in "${omitdir}/"*; do
+				[ -f "$pidfile" ] || continue
+				for pid in $(cat $pidfile); do
+					OMITPIDS="${OMITPIDS:+$OMITPIDS }-o $pid"
+				done
+			done
+		fi
+	done
+
+	# 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 $(upstart_jobs); do
+			OMITPIDS="${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 $OMITPIDS # SIGTERM
+	log_action_end_msg 0
+	alldead=""
+	OMITPIDS0="$OMITPIDS"
+	for seq in 1 2 3 4 5 6 7 8 9 10; do
+		OMITPIDS="$OMITPIDS0"
+		# 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 $(upstart_jobs); do
+			OMITPIDS="${OMITPIDS:+$OMITPIDS }-o $pid"
+		    done
+		fi
+		if killall5 -18 $OMITPIDS ; then
+		    :
+		else
+		    alldead=1
+		    break
+		fi
+
+		sleep 1
+	done
+
+	# Upstart has a method to set a kill timeout and so the job author
+	# may want us to wait longer than 10 seconds (as in the case of 
+	# mysql). (LP: #688541)
+	#
+	# We will wait up to 300 seconds for any jobs in stop/killed state. 
+	# Any kill timeout higher than that will be overridden by the need 
+	# to shutdown. NOTE the re-use of seq from above, since we already 
+	# waited up to 10 seconds for them.
+	while [ -n "$(upstart_killed_jobs)" ] ; do
+		seq=$(($seq+1))
+		if [ $seq -ge 300 ] ; then
+			break
+		fi
+		
+		sleep 1
+	done
+
+	if [ -z "$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|status)
+	# 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
+
+: