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D.28. /etc/sysconfig/network-devices/services/ipv4-static-route

#!/bin/sh
########################################################################
# Begin $network_devices/services/ipv4-static-route
#
# Description : IPV4 Static Route Script
#
# Authors     : Kevin P. Fleming - kpfleming@linuxfromscratch.org
#
# Version     : 00.00
#
# Notes       :
#
########################################################################

. /etc/sysconfig/rc 
. ${rc_functions} 
. ${IFCONFIG}

case "${TYPE}" in
    ("" | "network")
        need_ip=1
        need_gateway=1
    ;;

    ("default")
        need_gateway=1
        args="${args} default"
        desc="default"
    ;;

    ("host")
        need_ip=1
    ;;

    ("unreachable")
        need_ip=1
        args="${args} unreachable"
        desc="unreachable "
    ;;

    (*)
        boot_mesg "Unknown route type (${TYPE}) in ${IFCONFIG}, cannot continue." ${FAILURE}
        echo_failure
        exit 1
    ;;
esac

if [ -n "${need_ip}" ]; then
    if [ -z "${IP}" ]; then
        boot_mesg "IP variable missing from ${IFCONFIG}, cannot continue." ${FAILURE}
        echo_failure
        exit 1
    fi

    if [ -z "${PREFIX}" ]; then
        boot_mesg "PREFIX variable missing from ${IFCONFIG}, cannot continue." ${FAILURE}
        echo_failure
        exit 1
    fi
    
    args="${args} ${IP}/${PREFIX}"
    desc="${desc}${IP}/${PREFIX}"
fi

if [ -n "${need_gateway}" ]; then
    if [ -z "${GATEWAY}" ]; then
        boot_mesg "GATEWAY variable missing from ${IFCONFIG}, cannot continue." ${FAILURE}
        echo_failure
        exit 1
    fi
    args="${args} via ${GATEWAY}"
fi

if [ -n "${SOURCE}" ]; then
        args="${args} src ${SOURCE}"
fi

case "${2}" in
    up)
        boot_mesg "Adding '${desc}' route to the ${1} interface..."
        ip route add ${args} dev ${1}
        evaluate_retval
    ;;
    
    down)
        boot_mesg "Removing '${desc}' route from the ${1} interface..."
        ip route del ${args} dev ${1}
        evaluate_retval
    ;;
    
    *)
        echo "Usage: ${0} [interface] {up|down}"
        exit 1
    ;;
esac

# End $network_devices/services/ipv4-static-route

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