#!/bin/sh

### BEGIN INIT INFO
# Provides: shareiscsi sharenfs sharesmb zfs-share
# Required-Start: $local_fs $network $remote_fs
# Required-Stop: $local_fs $network $remote_fs
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Should-Start: iscsi iscsitarget istgt nfs-kernel-server samba
# Should-Stop: iscsi iscsitarget istgt nfs-kernel-server samba
# Short-Description: Network share OpenZFS datasets.
# Description: Run the `zfs share -a` or `zfs unmount -a` commands
#	for controlling iSCSI, NFS, or CIFS network shares.
### END INIT INFO

PATH=/sbin:/bin:/usr/sbin:/usr/bin

. /lib/lsb/init-functions
. /lib/init/vars.sh

[ -f /etc/default/zfs ] && . /etc/default/zfs

do_start()
{
	log_begin_msg "Sharing OpenZFS filesystems"
	log_progress_msg "filesystems"
	zfs share -a
	RET=$?

	if [ $RET != 0 ] ; then
		log_end_msg $RET
		exit $RET
	fi

	log_end_msg 0
}

do_stop()
{
	log_begin_msg "Unsharing OpenZFS filesystems"
	log_progress_msg "filesystems"
	zfs unshare -a
	RET=$?

	# Ignore a non-zero `zfs` result so that a busy OpenZFS instance
	# does not hang the system during shutdown.
	if [ $RET != 0 ] ; then
		log_end_msg $RET
	fi

	log_end_msg 0
}

case "$1" in
	(start)
		case "$ZFS_SHARE" in
			([Oo][Ff][Ff]|[Nn][Oo]|'')
				exit 0
				;;
		esac
		do_start
		;;
	(stop)
		case "$ZFS_UNSHARE" in
			([Oo][Ff][Ff]|[Nn][Oo]|'')
				exit 0
				;;
		esac
		do_stop
		;;
	(force-reload|reload|restart|status)
		# no-op
		;;

	(*)
		[ -n "$1" ] && echo "Error: Unknown command $1."
		echo "Usage: $0 {start|stop}"
		exit 3
	;;
esac