175 lines
3.9 KiB
Bash
Executable File
175 lines
3.9 KiB
Bash
Executable File
#!/bin/sh
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### BEGIN INIT INFO
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# Provides: mjpg-streamer
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# Required-Start: $local_fs networking
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# Required-Stop:
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# Should-Start:
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# Should-Stop:
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# Default-Start: 2 3 4 5
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# Default-Stop: 0 1 6
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# Short-Description: mjpg-streamer daemon
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# Description: Starts the mjpg-streamer daemon with the user specified in
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# /etc/default/mjpg-streamer.
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### END INIT INFO
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# Author: Sami Olmari & Gina Häußge
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# Set to true to aid in debugging with this script fails to
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# start.
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debug_me=false
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if [[ $debug_me == true ]]; then
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# Close STDOUT
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exec 1<&-
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# Close STDERR
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exec 2<&-
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LOG_FILE=/home/webcam/mjpg_streamer.log
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# Open STDOUT as $LOG_FILE file for read and write.
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exec 1<>$LOG_FILE
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# Redirect STDERR to STDOUT
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exec 2>&1
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# Display shell commands with expanded args
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set -x
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fi
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PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
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DESC="mjpg-streamer Daemon"
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NAME="mjpg-streamer"
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PKGNAME=mjpg-streamer
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PIDFILE=/var/run/$PKGNAME.pid
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SCRIPTNAME=/etc/init.d/$PKGNAME
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DEFAULTS=/etc/default/$PKGNAME
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# Read configuration variable file if it is present
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[ -r $DEFAULTS ] && . $DEFAULTS
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# Define LSB log_* functions.
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# Depend on lsb-base (>= 3.0-6) to ensure that this file is present.
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. /lib/lsb/init-functions
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# Exit if the DAEMON is not set
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if [ -z "$DAEMON" ]
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then
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log_warning_msg "Not starting $PKGNAME, DAEMON not set in $DEFAULTS."
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exit 0
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fi
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# Exit if the DAEMON is not installed
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[ -x "$DAEMON" ] || exit 0
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# Load the VERBOSE setting and other rcS variables
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[ -f /etc/default/rcS ] && . /etc/default/rcS
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if [ -z "$START" -o "$START" != "yes" ]
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then
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log_warning_msg "Not starting $PKGNAME, edit $DEFAULTS to start it."
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exit 0
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fi
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if [ -z "$MJPG_STREAMER_USER" ]
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then
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log_warning_msg "Not starting $PKGNAME, MJPG_STREAMER_USER not set in $DEFAULTS."
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exit 0
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fi
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#
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# Function to verify if a pid is alive
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#
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is_alive()
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{
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pid=`cat $1` > /dev/null 2>&1
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kill -0 $pid > /dev/null 2>&1
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return $?
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}
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#
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# Function that starts the daemon/service
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#
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do_start()
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{
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# Return
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# 0 if daemon has been started
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# 1 if daemon was already running
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# 2 if daemon could not be started
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is_alive $PIDFILE
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RETVAL="$?"
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if [ $RETVAL != 0 ]; then
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start-stop-daemon --verbose --start --background --pidfile $PIDFILE --make-pidfile \
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--exec $DAEMON --chuid $MJPG_STREAMER_USER --user $MJPG_STREAMER_USER \
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--umask $UMASK -- -i "${INPUT_UVC_LIB} ${CAMERA_OPTIONS}" -o "${OUTPUT_HTTP_LIB} -w ${WWW_ROOT}"
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RETVAL="$?"
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fi
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}
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#
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# Function that stops the daemon/service
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#
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do_stop()
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{
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# Return
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# 0 if daemon has been stopped
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# 1 if daemon was already stopped
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# 2 if daemon could not be stopped
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# other if a failure occurred
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start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --user $MJPG_STREAMER_USER --pidfile $PIDFILE
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RETVAL="$?"
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[ "$RETVAL" = "2" ] && return 2
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rm -f $PIDFILE
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[ "$RETVAL" = "0" ] && return 0 || return 1
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}
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case "$1" in
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start)
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[ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$NAME"
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do_start
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case "$?" in
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0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
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2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
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esac
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;;
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stop)
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[ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME"
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do_stop
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case "$?" in
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0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
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2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
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esac
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;;
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status)
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status_of_proc -p $PIDFILE $DAEMON $NAME && exit 0 || exit $?
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;;
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restart)
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log_daemon_msg "Restarting $DESC" "$NAME"
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do_stop
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case "$?" in
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0|1)
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do_start
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case "$?" in
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0) log_end_msg 0 ;;
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1) log_end_msg 1 ;; # Old process is still running
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*) log_end_msg 1 ;; # Failed to start
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esac
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;;
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*)
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# Failed to stop
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log_end_msg 1
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;;
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esac
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;;
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*)
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echo "Usage: $SCRIPTNAME {start|stop|status|restart}" >&2
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exit 3
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;;
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esac
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