#! /bin/sh
### BEGIN INIT INFO
# Provides:          open-iscsi iscsi
# Required-Start:    $network $local_fs iscsid
# Required-Stop:     $network $local_fs iscsid sendsigs
# Default-Start:     S
# Default-Stop:      0 1 6
# Short-Description: Login to default iSCSI targets
# Description:       Login to default iSCSI targets at boot and log out
#                    of all iSCSI targets at shutdown.
### END INIT INFO

PATH=/usr/sbin:/sbin:/usr/bin:/bin
DAEMON=/usr/sbin/iscsid
ADM=/usr/sbin/iscsiadm
PIDFILE=/run/iscsid.pid
NAMEFILE=/etc/iscsi/initiatorname.iscsi
CONFIGFILE=/etc/iscsi/iscsid.conf
OMITDIR=/run/sendsigs.omit.d

[ -x "$DAEMON" ] || exit 0

. /lib/lsb/init-functions

# Include defaults if available
if [ -f /etc/default/open-iscsi ]; then
	. /etc/default/open-iscsi
fi


if [ ! -d /sys/class/ ]; then
  log_failure_msg "iSCSI requires a mounted sysfs, not started."
  exit 0
fi

RETVAL=0

start() {
	if ! [ -s $PIDFILE ] || ! kill -0 `sed -n 1p $PIDFILE` >/dev/null ; then
		log_failure_msg "iSCSI initiator daemon not started: not logging in to default targets"
		exit 1
	fi

	starttargets

	# activate LVM, mount filesystems, etc.
	/usr/lib/open-iscsi/activate-storage.sh
}

starttargets() {
	log_daemon_msg "Setting up iSCSI targets"
	echo
	$ADM -m node --loginall=automatic
	log_end_msg 0
}

stoptargets() {
	log_daemon_msg "Disconnecting iSCSI targets"
	sync
	# only logout if daemon is running, iscsiadm hangs otherwise
        if [ -s $PIDFILE ] && kill -0 `sed -n 1p $PIDFILE` >/dev/null ; then
		/usr/lib/open-iscsi/logout-all.sh
        fi

	log_end_msg 0
}

stop() {
	# Call umountiscsi.sh to unmount iSCSI devices first (always do
	# that, regardless of whether root is on iSCSI, umountiscsi.sh
	# will exclude it - and even if that shouldn't work, the mount
	# point will be busy)
	log_daemon_msg "Umounting iSCSI filesystems"
	/usr/lib/open-iscsi/umountiscsi.sh
	umount_exit_status=$?
	log_end_msg $umount_exit_status

	if [ $umount_exit_status -ne 0 ]; then
		log_failure_msg "Couldn't unmount all iSCSI devices. not logging out from any target."
		exit 1
	fi

	stoptargets
}

restart() {
	stop
	start
}

restarttargets() {
	stoptargets
	starttargets
}

status() {
	echo Current active iSCSI sessions:
	$ADM -m session
}

case "$1" in
	start|starttargets|stop|stoptargets|restart|restarttargets|status)
		$1
		;;
	force-reload)
		restart
		;;
	*)
		echo "Usage: $0 {start|stop|restart|force-reload|status}"
		exit 1
		;;
esac
exit $RETVAL
