#!/bin/sh
stopfile=/tmp/l2tpns.stop
first=`date +%s`
min_first_time=3
restart_delay=5
prog=${0##*/}

while :
do
	echo "`date`: Starting l2tpns $@"
	start=`date +%s`
	/usr/sbin/l2tpns ${1+"$@"}
	RETVAL=$?
	stop=`date +%s`
	t=$(($stop - $start));
	first=$(($stop - $first));
	echo "`date`: l2tpns exited after $t seconds, status $RETVAL"
	if [ $first -lt $min_first_time ]; then
		echo "`date`: l2tpns exited immediately, $prog exiting"
		exit $RETVAL
	fi
	if [ -f $stopfile ]; then
		ls -l $stopfile
		echo "`date`: stop file found, $prog exiting"
		exit
	fi
	sleep $restart_delay
done >>/var/log/$prog 2>&1	&	# execute in background