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|
#!/bin/sh
# /etc/init.d/arpwatch: v9 2004/08/14 KELEMEN Peter <fuji@debian.org>
# Based on /etc/init.d/skeleton (1.8 03-Mar-1998 miquels@cistron.nl)
# 2001/10/26 fuji@debian.org Support multiple instances.
# 2001/11/24 fuji@debian.org Use POSIX-style functions.
# 2001/12/17 fuji@debian.org Use --pidfile on startup, fix restart.
# 2004/08/10 fuji@debian.org Source /etc/default/arwpatch .
# Create datafile if it doesn't exist.
# Run daemon only if executable.
PATH=/sbin:/bin:/usr/sbin:/usr/bin
NAME=arpwatch
DAEMON=/usr/sbin/$NAME
DESC="Ethernet/FDDI station monitor daemon"
DATADIR=/var/lib/$NAME
test -x $DAEMON || exit 0
### You shouldn't touch anything below unless you know what you are doing.
[ -f /etc/default/arpwatch ] && . /etc/default/arpwatch
# Decide whether we have to deal with multiple interfaces.
CONF=/etc/arpwatch.conf
MULTIPLE=0
if [ -r $CONF ]; then
grep -c '^[a-z]' $CONF 2>&1 >/dev/null && MULTIPLE=1
fi
# Check whether we have to drop privileges.
if [ -n "$RUNAS" ]; then
if getent passwd "$RUNAS" >/dev/null; then
ARGS="-u ${RUNAS} $ARGS"
else
RUNAS=""
fi
fi
start_instance () {
IFACE=$1
INSTANCE=${NAME}-${IFACE}
IFACE_OPTS="-i ${IFACE} -f ${IFACE}.dat $2"
DATAFILE=$DATADIR/${IFACE}.dat
echo -n "Starting $DESC: "
if [ ! -f $DATAFILE ]; then
echo -n "(creating $DATAFILE) "
:> $DATAFILE
fi
if [ -n "$RUNAS" ]; then
echo -n "(chown $RUNAS $DATAFILE) "
chown $RUNAS $DATAFILE
fi
start-stop-daemon --start --quiet \
--pidfile /var/run/${INSTANCE}.pid \
--exec $DAEMON -- $IFACE_OPTS $ARGS
echo "${INSTANCE}."
ps h -C $NAME -o pid,args | \
awk "/$IFACE/ { print \$1 }" > /var/run/${INSTANCE}.pid
}
stop_instance () {
IFACE=$1
INSTANCE=${NAME}-${IFACE}
[ -f /var/run/${INSTANCE}.pid ] || return 0
echo -n "Stopping $DESC: "
start-stop-daemon --stop --quiet --oknodo \
--pidfile /var/run/${INSTANCE}.pid
echo "${INSTANCE}."
rm -f /var/run/${INSTANCE}.pid
}
process_loop_break_line () {
__IFACE=$1
shift
__IOPTS="$@"
}
process_loop () {
OPERATION=$1
grep '^[a-z]' $CONF 2>/dev/null | \
while read LINE
do
process_loop_break_line $LINE
I=$__IFACE
I_OPTS="$__IOPTS"
$OPERATION $I "$I_OPTS"
done
}
start_default () {
echo -n "Starting $DESC: "
if [ ! -f $DATADIR/arp.dat ]; then
echo -n "(creating $DATADIR/arp.dat) "
:> $DATADIR/arp.dat
fi
if [ -n "$RUNAS" ]; then
echo -n "(chown $RUNAS $DATADIR/arp.dat) "
chown $RUNAS $DATADIR/arp.dat
fi
start-stop-daemon --start --quiet \
--exec $DAEMON -- $ARGS
echo "$NAME."
}
stop_default () {
echo -n "Stopping $DESC: "
start-stop-daemon --stop --quiet --oknodo \
--exec $DAEMON
echo "$NAME."
rm -f /var/run/$NAME.pid
}
startup () {
if [ "$MULTIPLE" -gt 0 ]; then
process_loop start_instance
else
start_default
fi
}
shutdown () {
if [ "$MULTIPLE" -gt 0 ]; then
process_loop stop_instance
else
stop_default
fi
}
case "$1" in
start)
startup
;;
stop)
shutdown
;;
reload)
echo "Reload operation not supported -- use restart."
exit 1
;;
restart|force-reload)
#
# If the "reload" option is implemented, move the "force-reload"
# option to the "reload" entry above. If not, "force-reload" is
# just the same as "restart".
#
shutdown
sleep 1
startup
;;
*)
N=/etc/init.d/$NAME
# echo "Usage: $N {start|stop|restart|reload|force-reload}" >&2
echo "Usage: $N {start|stop|restart|force-reload}" >&2
exit 1
;;
esac
exit 0
|
