#!/bin/sh
#
### BEGIN INIT INFO
# Provides: dhcrelay
# Default-Start: 2 3 4 5
# Default-Stop:
# Should-Start:
# Required-Start: $network
# Required-Stop: $network
# Short-Description: Start and stop the DHCP relay server
# Description: dhcrelay provides the Dynamic Host Configuration Protocol (DHCP)
#              relay server.  This is required when your DHCP server is on
#              another network segment from the clients.
### END INIT INFO
#
# The fields below are left around for legacy tools (will remove later).
#
# chkconfig: - 65 35
# description: dhcrelay provides a relay for Dynamic Host Control Protocol.
# processname: dhcrelay
# # pidfile: /var/run/dhcrelay.pid

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

[ -x /usr/sbin/dhcrelay ] || exit 0

# Define SERVERS with a list of one or more DHCP servers where
# DHCP packets are to be relayed to and from.  This is mandatory.
SERVERS=""
# Define OPTIONS with any other options to pass to the dhcrelay server.
OPTIONS="-q"

# Values specified in this file override the defaults above.
[ -f /etc/sysconfig/dhcrelay ] && . /etc/sysconfig/dhcrelay

# Check that at least one DHCP server to relay to was specified.
[ "${SERVERS}" = "" ] && exit 0

RETVAL=0

start() {
    # Start daemons.
    echo -n "Starting dhcrelay: "
    daemon /usr/sbin/dhcrelay $OPTIONS $SERVERS
    RETVAL=$?
    echo
    [ $RETVAL -eq 0 ] && touch /var/lock/subsys/dhcrelay
    return $RETVAL
}

stop() {
    # Stop daemons.
    echo -n "Shutting down dhcrelay: "
    killproc dhcrelay
    RETVAL=$?
    echo
    [ $RETVAL -eq 0 ] && rm -f /var/lock/subsys/dhcrelay
    return $RETVAL
}

# See how we were called.
case "$1" in
    start)
        start
        ;;
    stop)
        stop
        ;;
    restart|reload)
        stop
        start
        RETVAL=$?
        ;;
    condrestart)
        if [ -f /var/lock/subsys/dhcrelay ]; then
            stop
            start
            RETVAL=$?
        fi
        ;;
    status)
        status dhcrelay
        RETVAL=$?
        ;;
    *)
        echo "Usage: dhcrelay {start|stop|restart|condrestart|status}"
        exit 1
esac

exit $RETVAL