Your Name
124 lines
2.4 KiB
Bash
124 lines
2.4 KiB
Bash
#!/bin/sh
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PATH=/sbin:/bin:/usr/sbin:/usr/bin
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NAME=arpwatch
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DAEMON=/usr/sbin/$NAME
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DESC="Ethernet/FDDI station monitor daemon"
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DATADIR=/var/lib/$NAME
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RETVAL=0
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. /etc/init.d/functions
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### You shouldn't touch anything below unless you know what you are doing.
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[ -f /etc/default/arpwatch ] && . /etc/default/arpwatch
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# Decide whether we have to deal with multiple interfaces.
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CONF=/etc/arpwatch.conf
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MULTIPLE=0
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if [ -r $CONF ]; then
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grep -c '^[a-z]' $CONF 2>&1 >/dev/null && MULTIPLE=1
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fi
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# Check whether we have to drop privileges.
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if [ -n "$RUNAS" ]; then
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if getent passwd "$RUNAS" >/dev/null; then
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ARGS="-u ${RUNAS} $ARGS"
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else
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RUNAS=""
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fi
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fi
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start_instance () {
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IFACE=$1
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INSTANCE=${NAME}-${IFACE}
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DATAFILE=$DATADIR/${IFACE}.dat
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IFACE_OPTS="-P /var/run/${INSTANCE}.pid -i ${IFACE} -f ${DATAFILE} $2"
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echo -n "Starting $DESC: "
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if [ ! -f $DATAFILE ]; then
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echo -n "(creating $DATAFILE) " :> $DATAFILE
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fi
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if [ -n "$RUNAS" ]; then
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echo -n "(chown $RUNAS $DATAFILE) "
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chown $RUNAS $DATAFILE
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fi
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start-stop-daemon --start --quiet \
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--pidfile /var/run/${INSTANCE}.pid \
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--exec $DAEMON -- $IFACE_OPTS $ARGS
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echo "${INSTANCE}."
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ps h -C $NAME -o pid,args | \
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awk "/$IFACE/ { print \$1 }" > /var/run/${INSTANCE}.pid
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}
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stop_instance () {
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IFACE=$1
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INSTANCE=${NAME}-${IFACE}
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[ -f /var/run/${INSTANCE}.pid ] || return 0
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echo -n "Stopping $DESC: "
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start-stop-daemon --stop --quiet --oknodo \
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--pidfile /var/run/${INSTANCE}.pid
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echo "${INSTANCE}."
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rm -f /var/run/${INSTANCE}.pid
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}
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process_loop_break_line () {
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__IFACE=$1
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shift
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__IOPTS="$@"
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}
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process_loop () {
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OPERATION=$1
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grep '^[a-z]' $CONF 2>/dev/null | \
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while read LINE
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do
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process_loop_break_line $LINE
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I=$__IFACE
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I_OPTS="$__IOPTS"
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$OPERATION $I "$I_OPTS"
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done
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}
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startup () {
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process_loop start_instance
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}
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shutdown () {
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process_loop stop_instance
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}
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case "$1" in
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start)
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startup
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;;
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stop)
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shutdown
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;;
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reload)
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echo "Reload operation not supported -- use restart."
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RETVAL=2
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;;
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restart|force-reload)
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#
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# If the "reload" option is implemented, move the "force-reload"
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# option to the "reload" entry above. If not, "force-reload" is
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# just the same as "restart".
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#
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shutdown
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sleep 1
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startup
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;;
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status)
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status_of_proc $DAEMON $NAME
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;;
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*)
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N=/etc/init.d/$NAME
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# echo "Usage: $N {start|stop|restart|reload|force-reload}" >&2
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echo "Usage: $N {start|stop|restart|force-reload}" >&2
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RETVAL=2
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;;
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esac
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exit $RETVAL
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