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