#!/bin/bash
#
# plc	Manages all PLC services on this machine
#
# chkconfig: 2345 99 5
#
# description:	Manages all PLC services on this machine
#
# $Id: host.init,v 1.1.1.1 2006/03/27 17:36:46 mlhuang Exp $
#

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

# Source function library.
. /etc/init.d/functions

# Source configuration
if [ -f /etc/sysconfig/plc -a -z "${PLC_ROOT}${PLC_DATA}" ] ; then
    . /etc/sysconfig/plc
fi

RETVAL=0

start ()
{
    echo -n $"Mounting PLC: "

    if ! cut -d' ' -f2 /proc/mounts | grep -q $PLC_ROOT ; then
	if ! e2fsck -a $PLC_ROOT.img | logger -t "PLC" ; then
	    e2fsck $PLC_ROOT.img
	fi
	mount -o loop $PLC_ROOT.img $PLC_ROOT
	RETVAL=$(($RETVAL+$?))
    fi
    if ! cut -d' ' -f2 /proc/mounts | grep -q $PLC_ROOT/data ; then
	mount -t none -o bind,rw $PLC_DATA $PLC_ROOT/data
	RETVAL=$(($RETVAL+$?))
    fi
    if ! cut -d' ' -f2 /proc/mounts | grep -q $PLC_ROOT/proc ; then
	mount -t proc none $PLC_ROOT/proc
	RETVAL=$(($RETVAL+$?))
    fi

    if [ $RETVAL -eq 0 ]; then
	success $"PLC mount"
    else
	failure $"PLC mount"
    fi
    echo

    chroot $PLC_ROOT /sbin/service plc $PLC_OPTIONS start
    RETVAL=$?
}

stop ()
{
    chroot $PLC_ROOT /sbin/service plc $PLC_OPTIONS stop

    echo -n $"Unmounting PLC: "

    umount $PLC_ROOT/proc
    RETVAL=$(($RETVAL+$?))
    umount $PLC_ROOT/data
    RETVAL=$(($RETVAL+$?))
    umount $PLC_ROOT
    RETVAL=$(($RETVAL+$?))

    if [ $RETVAL -eq 0 ]; then
	success $"PLC unmount"
    else
	failure $"PLC unmount"	
    fi
    echo
}

case "$1" in
    start|stop)
	$1
	;;

    restart)
	stop
	start
	;;

    *)
	echo "Usage: $0 {start|stop|restart}"
	RETVAL=1
	;;
esac

exit $RETVAL