init script for srsd

srsd

#!/bin/bash

### BEGIN INIT INFO
# Provides:          srsd
# Required-Start:    $networking $local_fs $remote_fs $syslog
# Required-Stop:     $networking $local_fs $remote_fs $syslog
# Should-Start:
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: SRS daemon
# Description:       SRS daemon
### END INIT INFO


# /etc/init.d/srsd: start and stop srsd

PATH=/usr/sbin:/usr/bin:/bin:/sbin
DESC="SRS daemon"
NAME="srsd"
DAEMON=/usr/bin/srsd
HASHLENGTH=24
USER=Debian-exim
SECRETFILE=/etc/exim4/srsd.secret
PIDFILE=/var/run/exim4/srsd.pid
SOCKETFILE=/tmp/srsd

# populate secret
DAEMON_ARGS="--secretfile ${SECRETFILE} --hashlength ${HASHLENGTH}"

# Exit if the package is not installed
[ -x "$DAEMON" ] || exit 0

# Load the VERBOSE setting and other rcS variables
. /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/stops/reloads 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 --chuid $USER --exec /usr/bin/perl --startas $DAEMON --test > /dev/null \
		|| return 1
	start-stop-daemon --start --quiet --background --pidfile $PIDFILE --make-pidfile --chuid $USER --exec /usr/bin/perl --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
	# on this one.  As a last resort, sleep for some time.

	# change mode to 750 of socket
	WAIT=0
	while [ ! -e "$SOCKETFILE" -a $WAIT -le 5 ]; do
		sleep 1
		let "WAIT+=1"
	done
	chmod 750 "$SOCKETFILE"
}

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 "$PIDFILE"
	rm -f "$SOCKETFILE"

	return "$RETVAL"
}


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 $?
	;;

  restart|force-reload)
	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
	exit 3
	;;
esac

Socket path /tmp/srsd is hardcoded in srsd itself