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D.24. /sbin/ifup
#!/bin/sh
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# Begin /sbin/ifup
#
# Description : Interface Up
#
#!/bin/sh
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# Begin /sbin/ifup
#
# Description : Interface Up
#
# Authors
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# Update
#
#
# Version
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# Notes
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# Authors
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# Update
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# Version
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# Notes
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########################################################################
up()
{
########################################################################
up()
{
log_info_msg "Bringing up the ${1} interface..."
if ip link show $1 > /dev/null 2>&1; then link_status=`ip link show $1`
if [ -n "${link_status}" ]; then
if ! echo "${link_status}" | grep -q UP; then ip link set $1 up
fi
fi
else
log_failure_msg "Interface ${IFACE} doesn't exist." exit 1
fi
evaluate_retval
}
RELEASE="7.7"
USAGE="Usage: $0 [ -hV ] [--help] [--version] interface" VERSTR="LFS ifup, version ${RELEASE}"
while [ $# -gt 0 ]; do case "$1" in
--help | -h) help="y"; break ;;
--version | -V) echo "${VERSTR}"; exit 0 ;;
-*) echo "ifup: ${1}: invalid option" >&2 echo "${USAGE}" >& 2
exit 2 ;;
*) break ;;
esac done
if [ -n "$help" ]; then echo "${VERSTR}" echo "${USAGE}"
echo
cat << HERE_EOF
ifup is used to bring up a network interface. The interface parameter, e.g. eth0 or eth0:2, must match the trailing part of the interface specifications file, e.g. /etc/sysconfig/ifconfig.eth0:2.
HERE_EOF
exit 0
fi file=/etc/sysconfig/ifconfig.${1}
# Skip backup files
[ "${file}" = "${file%""~""}" ] || exit 0
. /lib/lsb/init-functions
if [ ! -r "${file}" ]; then
log_failure_msg "Unable to bring up ${1} interface! ${file} is missing or cannot be accessed." exit 1
fi
. $file
if [ "$IFACE" = "" ]; then
log_failure_msg "Unable to bring up ${1} interface! ${file} does not define an interface [IFACE exit 1
fi
# Do not process this service if started by boot, and ONBOOT
# is not set to yes
if [ "${IN_BOOT}" = "1" -a "${ONBOOT}" != "yes" ]; then
exit 0
fi
# Bring up the interface
if [ "$VIRTINT" != "yes" ]; then up ${IFACE}
fi
for S in ${SERVICE}; do
if[ ! -x "/lib/services/${S}" ]; then MSG="\nUnable to process ${file}. Either " MSG="${MSG}the SERVICE '${S} was not present " MSG="${MSG}or cannot be executed." log_failure_msg "$MSG"
exit 1
fi done
if [ "${SERVICE}" = "wpa" ]; then log_success_msg; fi
# Create/configure the interface for S in ${SERVICE}; do
IFCONFIG=${file} /lib/services/${S} ${IFACE} up done
# Set link up virtual interfaces if [ "${VIRTINT}" == "yes" ]; then
up ${IFACE}
fi
# Bring up any additional interface components for I in $INTERFACE_COMPONENTS; do up $I; done
# Set MTU if requested. Check if MTU has a "good" value. if test -n "${MTU}"; then
if [[ ${MTU} =~ ^[0-9]+$ ]] && [[ $MTU -ge 68 ]] ; then for I in $IFACE $INTERFACE_COMPONENTS; do
ip link set dev $I mtu $MTU; done
else
log_info_msg2 "Invalid MTU $MTU"
fi
fi
# Set the route default gateway if requested if [ -n "${GATEWAY}" ]; then
if ip route | grep -q default; then
log_warning_msg "Gateway already setup; skipping." else
log_info_msg "Adding default gateway ${GATEWAY} to the ${IFACE} interface..." ip route add default via ${GATEWAY} dev ${IFACE}
evaluate_retval
fi
fi
# End /sbin/ifup
fi
fi
# Set the route default gateway if requested if [ -n "${GATEWAY}" ]; then
if ip route | grep -q default; then
log_warning_msg "Gateway already setup; skipping." else
log_info_msg "Adding default gateway ${GATEWAY} to the ${IFACE} interface..." ip route add default via ${GATEWAY} dev ${IFACE}
evaluate_retval
fi
fi
# End /sbin/ifup
: Nathan Coulson - [email protected] Kevin P. Fleming - [email protected]
: Bruce Dubbs - [email protected]
: Nathan Coulson - [email protected] Kevin P. Fleming - [email protected]
: Bruce Dubbs - [email protected]
: LFS 7.0
: the IFCONFIG variable is passed to the scripts found
in the /lib/services directory, to indicate what file the service should source to get interface specifications.
: LFS 7.0
: the IFCONFIG variable is passed to the scripts found
in the /lib/services directory, to indicate what file the service should source to get interface specifications.