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D.26. /lib/services/ipv4-static‌


#!/bin/sh

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

# Begin /lib/services/ipv4-static

#

# Description : IPV4 Static Boot Script

#

# Authors : Nathan Coulson - nathan@linuxfromscratch.org

# Kevin P. Fleming - kpfleming@linuxfromscratch.org

# Update : Bruce Dubbs - bdubbs@linuxfromscratch.org

#

# Version : LFS 7.0

#

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


. /lib/lsb/init-functions

. ${IFCONFIG}


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

log_failure_msg "\nIP variable missing from ${IFCONFIG}, cannot continue." exit 1

fi


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

log_warning_msg "\nPREFIX variable missing from ${IFCONFIG}, assuming 24."

PREFIX=24

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


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

log_failure_msg "\nPREFIX and PEER both specified in ${IFCONFIG}, cannot continue." exit 1


elif [ -n "${PREFIX}" ]; then args="${args} ${IP}/${PREFIX}"


elif [ -n "${PEER}" ]; then args="${args} ${IP} peer ${PEER}"

fi


if [ -n "${LABEL}" ]; then args="${args} label ${LABEL}"

fi


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

fi


case "${2}" in up)



if [ "$(ip addr show ${1} 2>/dev/null | grep ${IP}/)" = "" ]; then log_info_msg "Adding IPv4 address ${IP} to the ${1} interface..." ip addr add ${args} dev ${1}

evaluate_retval else

log_warning_msg "Cannot add IPv4 address ${IP} to ${1}. Already present."

fi

;;


down)

if [ "$(ip addr show ${1} 2>/dev/null | grep ${IP}/)" != "" ]; then log_info_msg "Removing IPv4 address ${IP} from the ${1} interface..." ip addr del ${args} dev ${1}

evaluate_retval

fi


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

# Only remove the gateway if there are no remaining ipv4 addresses if [ "$(ip addr show ${1} 2>/dev/null | grep 'inet ')" != "" ]; then

log_info_msg "Removing default gateway..." ip route del default

evaluate_retval

fi

fi

;;


*)

echo "Usage: ${0} [interface] {up|down}" exit 1

;;

esac


# End /lib/services/ipv4-static

if [ "$(ip addr show ${1} 2>/dev/null | grep ${IP}/)" = "" ]; then log_info_msg "Adding IPv4 address ${IP} to the ${1} interface..." ip addr add ${args} dev ${1}

evaluate_retval else

log_warning_msg "Cannot add IPv4 address ${IP} to ${1}. Already present."

fi

;;


down)

if [ "$(ip addr show ${1} 2>/dev/null | grep ${IP}/)" != "" ]; then log_info_msg "Removing IPv4 address ${IP} from the ${1} interface..." ip addr del ${args} dev ${1}

evaluate_retval

fi


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

# Only remove the gateway if there are no remaining ipv4 addresses if [ "$(ip addr show ${1} 2>/dev/null | grep 'inet ')" != "" ]; then

log_info_msg "Removing default gateway..." ip route del default

evaluate_retval

fi

fi

;;


*)

echo "Usage: ${0} [interface] {up|down}" exit 1

;;

esac


# End /lib/services/ipv4-static


: Kevin P. Fleming - kpfleming@linuxfromscratch.org DJ Lucas - dj@linuxfromscratch.org

: Bruce Dubbs - bdubbs@linuxfromscratch.org

: Kevin P. Fleming - kpfleming@linuxfromscratch.org DJ Lucas - dj@linuxfromscratch.org

: Bruce Dubbs - bdubbs@linuxfromscratch.org

: LFS 7.0

: LFS 7.0

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