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- #! /bin/sh
- ### BEGIN INIT INFO
- # Provides: tcpdump
- # Required-Start: $remote_fs $network
- # Required-Stop: $remote_fs $network
- # Default-Start: 2 3 4 5
- # Default-Stop: 0 1 6
- # Short-Description: start/stop packet capture using tcpdump
- # Description: start/stop packet capture using tcpdump
- #
- ### END INIT INFO
- # Author: Michael Fung www.3open.org
- # Last Update: 2010-01-21
- # PATH should only include /usr/* if it runs after the mountnfs.sh script
- PATH=/sbin:/usr/sbin:/bin:/usr/bin
- DESC="packet catpure using tcpdump"
- NAME=tcpdump
- DAEMON=/usr/sbin/$NAME
- DAEMON_ARGS="-i eth1 -w /home/packetlog/$(hostname)_%G-%m-%d_%H:%M.cap -s 90 -G 1800 -z gzip"
- PIDFILE=/var/run/$NAME.pid
- SCRIPTNAME=/etc/init.d/$NAME
- # Exit if the package is not installed
- [ -x "$DAEMON" ] || exit 0
- # Read configuration variable file if it is present
- [ -r /etc/default/$NAME ] && . /etc/default/$NAME
- # Load the VERBOSE setting and other rcS variables
- . /lib/init/vars.sh
- # Define LSB log_* functions.
- # Depend on lsb-base (>= 3.0-6) to ensure that this file is present.
- . /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 --background --make-pidfile --exec $DAEMON --test > /dev/null \
- || return 1
- start-stop-daemon --start --quiet --pidfile $PIDFILE --background --make-pidfile --background --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
- #
- 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
- ;;
- 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|restart|force-reload}" >&2
- exit 3
- ;;
- esac
- :
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