131 lines
3.2 KiB
Bash
Executable file
131 lines
3.2 KiB
Bash
Executable file
#!/bin/sh
|
|
########################################################################
|
|
# Begin /sbin/ifup
|
|
#
|
|
# Description : Interface Up
|
|
#
|
|
# Authors : Nathan Coulson - nathan@linuxfromscratch.org
|
|
# Kevin P. Fleming - kpfleming@linuxfromscratch.org
|
|
# Update : Bruce Dubbs - bdubbs@linuxfromscratch.org
|
|
#
|
|
# Version : LFS 7.2
|
|
#
|
|
# Notes : The IFCONFIG variable is passed to the SERVICE script
|
|
# in the /lib/services directory, to indicate what file the
|
|
# service should source to get interface specifications.
|
|
#
|
|
########################################################################
|
|
|
|
up()
|
|
{
|
|
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 "\nInterface ${1} doesn't exist."
|
|
exit 1
|
|
fi
|
|
}
|
|
|
|
RELEASE="7.2"
|
|
|
|
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
|
|
|
|
log_info_msg "Bringing up the ${1} interface... "
|
|
|
|
if [ ! -r "${file}" ]; then
|
|
log_failure_msg2 "${file} is missing or cannot be accessed."
|
|
exit 1
|
|
fi
|
|
|
|
. $file
|
|
|
|
# Do not process this service if started by boot, and ONBOOT
|
|
# is not set to yes
|
|
if [ "${IN_BOOT}" = "1" -a "${ONBOOT}" != "yes" ]; then
|
|
log_info_msg2 "skipped"
|
|
exit 0
|
|
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
|
|
|
|
# Create/configure the interface
|
|
for S in ${SERVICE}; do
|
|
IFCONFIG=${file} /lib/services/${S} ${1} up
|
|
done
|
|
|
|
# Bring up the interface and any components
|
|
for I in $1 $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 $1 $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 "\nGateway already setup; skipping."
|
|
else
|
|
log_info_msg "Setting up default gateway..."
|
|
ip route add default via ${GATEWAY} dev ${1}
|
|
evaluate_retval
|
|
fi
|
|
fi
|
|
|
|
# End /sbin/ifup
|