TT#18115 Call start-stop-daemon correctly

We should pass the interpreter executable as --exec and the actual
script to run as --startas, as documented in the man page. Otherwise
start-stop-daemon will not be able to match the executable currently
running, and will consider that the daemon is *not* running. Use --name
to match on the process name.

Change-Id: Icb7a608aaf2dd3d54083f77ed6df67a7dbecdb8d

debian/ngcp-rate-o-mat.init

@@ -17,6 +17,7 @@ PATH=/sbin:/usr/sbin:/bin:/usr/bin
 DESC="rate-o-mat"
 NAME=rate-o-mat
 PACKAGE=ngcp-rate-o-mat
+INTERP=/usr/bin/perl
 DAEMON=/usr/sbin/$NAME
 DAEMON_ARGS=""
 PIDFILE=/var/run/$NAME.pid
@@ -69,10 +70,12 @@ do_start()
 	#   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 \
+	start-stop-daemon --start --quiet --test \
+	  --pidfile $PIDFILE --exec $INTERP --name $NAME --startas $DAEMON >/dev/null \
 		|| return 1
-	start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON -- \
-		$DAEMON_ARGS \
+	start-stop-daemon --start --quiet \
+	  --pidfile $PIDFILE --exec $INTERP --name $NAME --startas $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
@@ -88,7 +91,8 @@ do_stop()
 	#   0 if daemon has been 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
+	start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 \
+	  --pidfile $PIDFILE --exec $INTERP --name $NAME
 	[ "$?" = 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.
@@ -96,7 +100,8 @@ do_stop()
 	# 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
+	start-stop-daemon --stop --quiet --retry=0/30/KILL/5 --oknodo \
+	  --pidfile $PIDFILE --exec $INTERP --name $NAME
 	RETVAL="$?"
 	[ "$RETVAL" = 2 ] && return 2
 	# daemon doesn't delete its pidfile when it exits
@@ -113,7 +118,8 @@ do_reload() {
 	# restarting (for example, when it is sent a SIGHUP),
 	# then implement that here.
 	#
-	start-stop-daemon --stop --signal 1 --quiet --pidfile $PIDFILE --name $NAME
+	start-stop-daemon --stop --signal 1 --quiet \
+	  --pidfile $PIDFILE --exec $INTERP --name $NAME
 	return 0
 }