#!/bin/sh

#

# iscsid iSCSI daemon

#

# chkconfig: 345 7 89

# description: Starts and stops the iSCSI daemon.

#

# processname: iscsid

# pidfile: /var/run/iscsid.pid

# config:  /etc/iscsi/iscsid.conf

### BEGIN INIT INFO

# Provides:          iscsid

# Default-Start: 3 4 5

# Default-Stop: 0 1 2 6

# Short-Description: Starts and stops login iSCSI daemon.

# Description: iscsid provides the iSCSI session and connection state machine

#              for software iscsi/iser (iscsi_tcp/ib_iser) and partialy

#              offloaded hardware (bnx2i).

### END INIT INFO

# Source function library.

. /etc/rc.d/init.d/functions

exec=/sbin/iscsid

prog=iscsid

config=/etc/iscsi/iscsid.conf

lockfile=/var/lock/subsys/$prog

# FIXME this has a false positive for root on nfs

root_is_iscsi() {

    rootopts=$(awk '{ if ($1 !~ /^[ \t]*#/ && $2 == "/") { print $4; }}' /etc/mtab)

    [[ "$rootopts" =~ "_netdev" ]]

}

force_start() {

    echo -n $"Starting $prog: "

    modprobe -q iscsi_tcp

    modprobe -q ib_iser

    modprobe -q cxgb3i

    modprobe -q bnx2i

    modprobe -q be2iscsi

    daemon brcm_iscsiuio

    daemon $prog

    retval=$?

    echo

    [ $retval -eq 0 ] && touch $lockfile

    return $retval

}

use_discoveryd() {

    grep -qrs "discovery.sendtargets.use_discoveryd = Yes" /var/lib/iscsi/send_targets

    if [ $? -eq 0 ] ; then

 	return 0

    fi

    grep -qrs "discovery.isns.use_discoveryd = Yes" /var/lib/iscsi/isns

    if [ $? -eq 0 ] ; then

 	return 0

    fi

    return 1

}

start() {

    [ -x $exec ] || exit 5

    [ -f $config ] || exit 6

    # only start if nodes are setup to startup automatically, root is iscsi,

    # or if iscsid is managing the sessions.

    grep -qrs "node.startup = automatic" /var/lib/iscsi/nodes

    if [ $? -eq 0 ] || root_is_iscsi || use_discoveryd ; then

        force_start

        return $?

    fi

    return 0

}

stop() {

    if use_discoveryd ; then

	iscsiadm -k 0 2>/dev/null

    fi

    declare -a iparams=( $(iscsiadm -m session 2>/dev/null | egrep "tcp|iser|bnx2i|cxgb3i|be2iscsi") )

    if [[ -n "${iparams[*]}" ]]; then

        # We have active sessions, so don't stop iscsid!!

        echo -n $"Not stopping $prog: iscsi sessions still active"

        warning $"Not stopping $prog: iscsi sessions still active"

        echo

        return 0

    fi

    echo -n $"Stopping $prog: "

    iscsiadm -k 0 2>/dev/null

    echo

    killproc brcm_iscsiuio

    rm -f /var/run/brcm_iscsiuio.pid

    # only remove the iscsi drivers when offload is used

    rmmod bnx2i 2>/dev/null

    rmmod cnic 2>/dev/null

    rmmod cxgb3i 2>/dev/null

    modprobe -r be2iscsi 2>/dev/null

    modprobe -r ib_iser 2>/dev/null

    modprobe -r iscsi_tcp 2>/dev/null

    rm -f $lockfile

    return 0

}

rh_status_q() {

    rh_status >/dev/null 2>&1

}

restart() {

    rh_status_q

    use_force_start=$?

    stop

    # if iscsid was running then make sure it starts up

    if [ "$use_force_start" -eq 0 ] ; then

	force_start

    else

	start

    fi

}

reload() {

    return 3

}

force_reload() {

    restart

}

rh_status() {

    status $prog

}

case "$1" in

    start)

        rh_status_q && exit 0

        $1

        ;;

    force-start)

        force_start

        ;;

    stop)

        rh_status_q || exit 0

        $1

        ;;

    restart)

        $1

        ;;

    reload)

        rh_status_q || exit 7

        $1

        ;;

    force-reload)

        force_reload

        ;;

    status)

        rh_status

        ;;

    condrestart|try-restart)

        rh_status_q || exit 0

        restart

        ;;

    *)

        echo $"Usage: $0

{start|stop|status|restart|condrestart|try-restart|reload|force-reload}"

        exit 2

esac

exit $?