#!/bin/sh

. /etc/zaf.conf

. ${ZAF_LIB_DIR}/zaf.lib.sh

help() {
	echo "$0 key cmd"
	exit 2
}

lkey="$1"
[ -z "$lkey" ] && help
shift

[ -z "${ZAF_LOCK_SECONDS}" ] && seconds=5
[ -z "${ZAF_LOCK_FORCE}" ] && force=1

lockfile="${ZAF_TMP_DIR}/zaflock_${lkey}"
i=0
while [ -f "$lockfile" ] && [ $i -lt $seconds ]; do
	sleep 1
	i=$(expr $i + 1)
done
if [ -f "$lockfile" ] && [ -n "$force" ]; then
	logger -s -t "zlock" -p daemon.warn "Releasing $lockfile!"
	rm -f "$lockfile"
fi
if [ -f "$lockfile" ] && [ -z "$force" ]; then
	logger -s -t "zlock" -p daemon.err "Could not get lock for $lockfile!"
	exit 1
fi

touch "$lockfile"
[ -n "$*" ] && $@
rm -f "$lockfile"