restart-lookupd   [plain text]

#!/bin/sh
#
# restart-lookupd
#

PIDFILE="/var/run/lookupd.pid"

#
# Check for a PID file. There's something wrong if
# the file is missing.
#
if [ ! -f ${PIDFILE} ]; then
	#
	# "lookupd" PID file not found, exiting
	#
	logger -i -p daemon.notice -t restart-lookupd "${PIDFILE} missing"
	exit 0
fi
oPID=`/bin/cat ${PIDFILE}`

#
# Send a SIGHUP to the "lookupd" process.
#
kill -HUP ${oPID}
status=$?
if [ $status -ne 0 ]; then
	logger -i -p daemon.notice -t restart-lookupd "Could not SIGHUP lookupd, pid=${oPID}, status=${status}"
	exit 0
fi

#
# Wait a (short time) for "lookupd" to restart.
#

CHECK=1
LIMIT=10

while [ 1 ]
do
	#
	# check status of "lookupd"
	#
	if [ -f ${PIDFILE} ]; then
		nPID=`cat ${PIDFILE}`
		if [ "X${oPID}" != "X${nPID}" ]; then
			#
			# new PID detected
			#
			break
		fi
	else
		#
		# "lookupd" PID file not found (yet), delay & retry
		#
	fi

	CHECK=`expr ${CHECK} + 1`
	if [ ${CHECK} -le ${LIMIT} ]; then
		sleep 1
	else
		#
		# We've waiting long enough, something's not right
		#
		logger -i -p daemon.notice -t restart-lookupd "lookupd restart failed"
		exit 0
	fi
done

#
# Delay a bit to give lookupd a chance to initialize
#
sleep 3

#
# Touch the cache key to cause a notification
#
scutil << __END_OF_SCUTIL_COMMAND > /dev/null 2>&1
open
touch File:/var/run/lookupd.pid
close
quit
__END_OF_SCUTIL_COMMAND


exit 0