Clean-up xcp-squeezed.init

Author: thomasgoirand

debian/xcp-squeezed.init

@@ -11,152 +11,76 @@
 ### END INIT INFO
 
 # Author: Jon Ludlam <[email protected]>
-#
-# Please remove the "Author" lines above and replace them
-# with your own name if you copy and modify this script.
+# & Thomas Goirand <[email protected]>
+# Released under the LGPL 2.1
 
-# Do NOT "set -e"
-
-# PATH should only include /usr/* if it runs after the mountnfs.sh script
 PATH=/sbin:/usr/sbin:/bin:/usr/bin
-DESC="Description of the service"
+DESC="XCP Squeeze ballooning daemon"
 NAME=squeezed
-DAEMON=/usr/sbin/$NAME
-PIDFILE=/var/run/$NAME.pid
-DAEMON_ARGS="-daemon -pidfile $PIDFILE"
-SCRIPTNAME=/etc/init.d/$NAME
+DAEMON=/usr/sbin/${NAME}
+PIDFILE=/var/run/${NAME}.pid
+DAEMON_ARGS="-daemon -pidfile ${PIDFILE}"
+SCRIPTNAME=/etc/init.d/${NAME}
 
-# Exit if the package is not installed
-[ -x "$DAEMON" ] || exit 0
+# Exit if the package is removed but not purged
+[ -x "${DAEMON}" ] || exit 0
 
 # Exit if we are not in dom0
 grep hypervisor /proc/cpuinfo > /dev/null || exit 0
 
 # Read configuration variable file if it is present
-[ -r /etc/default/$NAME ] && . /etc/default/$NAME
+[ -r /etc/default/${NAME} ] && . /etc/default/${NAME}
 
 # Load the VERBOSE setting and other rcS variables
-. /lib/init/vars.sh
+[ -r /lib/init/vars.sh ] && . /lib/init/vars.sh
 
-# Define LSB log_* functions.
-# Depend on lsb-base (>= 3.2-14) to ensure that this file is present
-# and status_of_proc is working.
 . /lib/lsb/init-functions
 
-#
-# Function that starts the daemon/service
-#
-do_start()
-{
-	# Return
-	#   0 if daemon has been started
-	#   1 if daemon was already running
-	#   2 if daemon could not be started
-	start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON --test > /dev/null \
-		|| return 1
-	start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON -- \
-		$DAEMON_ARGS \
-		|| return 2
-	# Add code here, if necessary, that waits for the process to be ready
-	# to handle requests from services started subsequently which depend
-	# on this one.  As a last resort, sleep for some time.
-}
-
-#
-# Function that stops the daemon/service
-#
-do_stop()
-{
-	# Return
-	#   0 if daemon has been stopped
-	#   1 if daemon was already stopped
-	#   2 if daemon could not be stopped
-	#   other if a failure occurred
-	start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --pidfile $PIDFILE --name $NAME
-	RETVAL="$?"
-	[ "$RETVAL" = 2 ] && return 2
-	# Wait for children to finish too if this is a daemon that forks
-	# and if the daemon is only ever run from this initscript.
-	# If the above conditions are not satisfied then add some other code
-	# that waits for the process to drop all resources that could be
-	# needed by services started subsequently.  A last resort is to
-	# sleep for some time.
-	start-stop-daemon --stop --quiet --oknodo --retry=0/30/KILL/5 --exec $DAEMON
-	[ "$?" = 2 ] && return 2
-	# Many daemons don't delete their pidfiles when they exit.
-	rm -f $PIDFILE
-	return "$RETVAL"
-}
-
-#
-# Function that sends a SIGHUP to the daemon/service
-#
-do_reload() {
-	#
-	# If the daemon can reload its configuration without
-	# restarting (for example, when it is sent a SIGHUP),
-	# then implement that here.
-	#
-	start-stop-daemon --stop --signal 1 --quiet --pidfile $PIDFILE --name $NAME
-	return 0
-}
-
-case "$1" in
-  start)
-	[ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$NAME"
-	do_start
-	case "$?" in
-		0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
-		2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
-	esac
-	;;
-  stop)
-	[ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME"
-	do_stop
-	case "$?" in
-		0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
-		2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
-	esac
-	;;
-  status)
-       status_of_proc "$DAEMON" "$NAME" && exit 0 || exit $?
-       ;;
-  #reload|force-reload)
-	#
-	# If do_reload() is not implemented then leave this commented out
-	# and leave 'force-reload' as an alias for 'restart'.
-	#
-	#log_daemon_msg "Reloading $DESC" "$NAME"
-	#do_reload
-	#log_end_msg $?
-	#;;
-  restart|force-reload)
-	#
-	# If the "reload" option is implemented then remove the
-	# 'force-reload' alias
-	#
-	log_daemon_msg "Restarting $DESC" "$NAME"
-	do_stop
-	case "$?" in
-	  0|1)
-		do_start
-		case "$?" in
-			0) log_end_msg 0 ;;
-			1) log_end_msg 1 ;; # Old process is still running
-			*) log_end_msg 1 ;; # Failed to start
-		esac
-		;;
-	  *)
-	  	# Failed to stop
-		log_end_msg 1
-		;;
-	esac
-	;;
-  *)
-	#echo "Usage: $SCRIPTNAME {start|stop|restart|reload|force-reload}" >&2
-	echo "Usage: $SCRIPTNAME {start|stop|status|restart|force-reload}" >&2
+case "${1}" in
+start)
+	[ "${VERBOSE}" != no ] && log_daemon_msg "Starting ${DESC}" "${NAME}"
+	start-stop-daemon --start --quiet --pidfile ${PIDFILE} --exec ${DAEMON} --test > /dev/null
+	if [ $? != 0 -a $? != 1 ] ; then
+		[ "${VERBOSE}" != no ] && log_end_msg 1
+		exit 1
+	fi
+	start-stop-daemon --start --quiet --pidfile ${PIDFILE} --exec ${DAEMON} -- ${DAEMON_ARGS}
+	if [ $? = 0 ] ; then
+		[ "${VERBOSE}" != no ] && log_end_msg 1
+		exit 1
+	else
+		[ "${VERBOSE}" != no ] && log_end_msg 0
+	fi
+;;
+stop)
+	[ "${VERBOSE}" != no ] && log_daemon_msg "Stopping ${DESC}" "${NAME}"
+	start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --pidfile ${PIDFILE} --name ${NAME}
+	RETVAL=$?
+	if [ ${RETVAL} != 0 -a ${RETVAL} != 1 ] ; then
+		[ "${VERBOSE}" != no ] && log_end_msg 1
+		exit 1
+	fi
+	rm -f ${PIDFILE}
+	[ "${VERBOSE}" != no ] && log_end_msg 0
+;;
+status)
+	status_of_proc "${DAEMON}" "${NAME}" && exit 0 || exit $?
+;;
+#reload)
+#	log_daemon_msg "Reloading ${DESC}" "${NAME}"
+#	start-stop-daemon --stop --signal 1 --quiet --pidfile ${PIDFILE} --name ${NAME}
+#	log_end_msg $?
+#;;
+restart|force-reload)
+	log_daemon_msg "Restarting ${DESC}" "${NAME}"
+	${0} stop
+	sleep 1
+	${0} start
+;;
+*)
+	echo "Usage: ${0} {start|stop|status|restart|force-reload}" >&2
 	exit 3
 	;;
 esac
 
-:
+exit 0