#!/bin/sh

# this script needs to be installed so that statd points to it with the -H 
# command line argument. The easiest way to do that is to put something like this in 
# /etc/sysconfig/nfs:
#   STATD_HOSTNAME="myhostname -H /etc/ctdb/statd-callout"

. /etc/ctdb/functions
loadconfig nfs

[ -z "$STATD_SHARED_DIRECTORY" ] && exit 0

[ -d $STATD_SHARED_DIRECTORY ] || exit 0

case "$1" in
  add-client)
        for f in `/bin/ls /etc/ctdb/state/statd/ip/*`; do
	    ip=`/bin/basename $f`
	    [ -d $STATD_SHARED_DIRECTORY/$ip ] || /bin/mkdir $STATD_SHARED_DIRECTORY/$ip
	    /bin/touch $STATD_SHARED_DIRECTORY/$ip/sm/$2
	done
	;;
  del-client)
        for f in `/bin/ls /etc/ctdb/state/statd/ip/*`; do
	    ip=`/bin/basename $f`
	    /bin/rm -f $STATD_SHARED_DIRECTORY/$ip/sm/$2
	done
	;;
  notify)
	# send out notifications to any additional ips we now serve
        for f in `/bin/ls /etc/ctdb/state/statd/ip/*`; do
	    ip=`/bin/basename $f`
	    [ -d $STATD_SHARED_DIRECTORY/$ip ] && [ -x /usr/bin/smnotify ] && {
		/bin/rm -rf /tmp/statd/$ip
		/bin/mkdir -p /tmp/statd/$ip
		/bin/cp $STATD_SHARED_DIRECTORY/$ip/sm/* /tmp/statd/$ip
		for g in `/bin/ls /tmp/statd/$ip/*`; do
			client=`/bin/basename $g`
			# send the notifications twice so we force the other
			# end to recognice a state change has occured and that
			# it MUST reclaim the locks.
			#
			/usr/bin/smnotify --client=$client --ip=$ip --server=$ip --stateval=4
			/usr/bin/smnotify --client=$client --ip=$ip --server=$ip --stateval=5
		done
	    }
	done
	;;
esac