D.27. /etc/sysconfig/network-devices/services/ipv4-static


#!/bin/sh

########################################################################

# Begin $network_devices/services/ipv4-static

#

# Description : IPV4 Static Boot Script

#

# Authors     : Nathan Coulson - nathan@linuxfromscratch.org

#        Kevin P. Fleming - kpfleming@linuxfromscratch.org

#

# Version     : 00.00

#

# Notes       :

#

########################################################################



. /etc/sysconfig/rc 

. ${rc_functions} 

. ${IFCONFIG}



if [ -z "${IP}" ]; then

    boot_mesg "IP variable missing from ${IFCONFIG}, cannot continue." ${FAILURE}

    echo_failure

    exit 1

fi



if [ -z "${PREFIX}" -a -z "${PEER}" ]; then

    boot_mesg -n "PREFIX variable missing from ${IFCONFIG}," ${WARNING}

    boot_mesg " assuming 24."

    echo_warning

    PREFIX=24

    args="${args} ${IP}/${PREFIX}"

elif [ -n "${PREFIX}" -a -n "${PEER}" ]; then

    boot_mesg "PREFIX and PEER both specified in ${IFCONFIG}, cannot continue." ${FAILURE}

    echo_failure

    exit 1

elif [ -n "${PREFIX}" ]; then

    args="${args} ${IP}/${PREFIX}"

elif [ -n "${PEER}" ]; then

    args="${args} ${IP} peer ${PEER}"

fi



if [ -n "${BROADCAST}" ]; then

    args="${args} broadcast ${BROADCAST}"

fi



case "${2}" in

    up)

        boot_mesg "Adding IPv4 address ${IP} to the ${1} interface..."

        ip addr add ${args} dev ${1}

        evaluate_retval

    

        if [ -n "${GATEWAY}" ]; then

            if ip route | grep -q default; then

                boot_mesg "Gateway already setup; skipping." ${WARNING}

                echo_warning

            else

                boot_mesg "Setting up default gateway..."

                ip route add default via ${GATEWAY} dev ${1}

                evaluate_retval

             fi

        fi

    ;;

    

    down)

        if [ -n "${GATEWAY}" ];    then

            boot_mesg "Removing default gateway..."

            ip route del default

            evaluate_retval

        fi

    

        boot_mesg "Removing IPv4 address ${IP} from the ${1} interface..."

        ip addr del ${args} dev ${1}

        evaluate_retval

    ;;

    

    *)

        echo "Usage: ${0} [interface] {up|down}"

        exit 1

    ;;

esac



# End $network_devices/services/ipv4-static


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