96 lines
2.5 KiB
Bash
Executable File
96 lines
2.5 KiB
Bash
Executable File
#!/bin/bash
|
|
########################################################################
|
|
# Begin /sbin/ifdown
|
|
#
|
|
# Description : Interface Down
|
|
#
|
|
# Authors : Nathan Coulson - nathan@linuxfromscratch.org
|
|
# Kevin P. Fleming - kpfleming@linuxfromscratch.org
|
|
# Update : Bruce Dubbs - bdubbs@linuxfromscratch.org
|
|
#
|
|
# Version : LFS 7.0
|
|
#
|
|
# Notes : 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.
|
|
#
|
|
########################################################################
|
|
|
|
RELEASE="7.0"
|
|
|
|
USAGE="Usage: $0 [ -hV ] [--help] [--version] interface"
|
|
VERSTR="LFS ifdown, 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 "${USAGE}"
|
|
echo
|
|
cat << HERE_EOF
|
|
ifdown is used to bring down a network interface. The interface
|
|
parameter, e.g. eth0 or eth0:2, must match the trailing part of the
|
|
interface specifications file, e.g. /etc/sysconfig/ifconfig.eth0:2.
|
|
|
|
HERE_EOF
|
|
exit 0
|
|
fi
|
|
|
|
file=/etc/sysconfig/ifconfig.${1}
|
|
|
|
# Skip backup files
|
|
[ "${file}" = "${file%""~""}" ] || exit 0
|
|
|
|
. /lib/lsb/init-functions
|
|
|
|
if [ ! -r "${file}" ]; then
|
|
log_warning_msg "${file} is missing or cannot be accessed."
|
|
exit 1
|
|
fi
|
|
|
|
. ${file}
|
|
|
|
# We only need to first service to bring down the interface
|
|
S=`echo ${SERVICE} | cut -f1 -d" "`
|
|
|
|
if ip link show ${1} > /dev/null 2>&1; then
|
|
if [ -n "${S}" -a -x "/lib/services/${S}" ]; then
|
|
IFCONFIG=${file} /lib/services/${S} ${1} down
|
|
else
|
|
MSG="Unable to process ${file}. Either "
|
|
MSG="${MSG}the SERVICE variable was not set "
|
|
MSG="${MSG}or the specified service cannot be executed."
|
|
log_failure_msg "$MSG"
|
|
exit 1
|
|
fi
|
|
else
|
|
log_warning_msg "Interface ${1} doesn't exist."
|
|
fi
|
|
|
|
# Leave the interface up if there are additional interfaces in the device
|
|
link_status=`ip link show ${1} 2>/dev/null`
|
|
|
|
if [ -n "${link_status}" ]; then
|
|
if [ "$(echo "${link_status}" | grep UP)" != "" ]; then
|
|
if [ "$(ip addr show ${1} | grep 'inet ')" == "" ]; then
|
|
log_info_msg "Bringing down the ${1} interface..."
|
|
ip link set ${1} down
|
|
evaluate_retval
|
|
fi
|
|
fi
|
|
fi
|
|
|
|
# End /sbin/ifdown
|