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Diffstat (limited to 'scripts/vyatta_net_name')
| -rwxr-xr-x | scripts/vyatta_net_name | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/scripts/vyatta_net_name b/scripts/vyatta_net_name new file mode 100755 index 00000000..43c71c1d --- /dev/null +++ b/scripts/vyatta_net_name @@ -0,0 +1,153 @@ +#!/bin/bash +# **** License **** +# Version: VPL 1.0 +# +# The contents of this file are subject to the Vyatta Public License +# Version 1.0 ("License"); you may not use this file except in +# compliance with the License. You may obtain a copy of the License at +# http://www.vyatta.com/vpl +# +# Software distributed under the License is distributed on an "AS IS" +# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See +# the License for the specific language governing rights and limitations +# under the License. +# +# This code was originally developed by Vyatta, Inc. +# Portions created by Vyatta are Copyright (C) 2007 Vyatta, Inc. +# All Rights Reserved. +# +# Author: Tom Grennan <tgrennan@vyatta.com> +# Description: search Vyatta config for interface name given address +# +# **** End License **** + +debug= +match= +attr_address=0:0:0:0:0:0 +declare -i ethn=0 last_ethn=0 + +test -r /etc/default/vyatta && source /etc/default/vyatta + +# process command line variable overrides + +for arg ; do + case "$arg" in + --debug ) + debug=echo + ;; + --*=* ) + arg=${arg#--} + eval ${arg%=*}=\"${arg#*=}\" + ;; + *=* ) + eval ${arg%=*}=\"${arg#*=}\" + ;; + *:*:*:*:*:* ) + attr_address=$arg + ;; + * ) + kname=$arg + ;; + esac +done + +: ${vyatta_prefix:=/opt/vyatta} +: ${vyatta_sbindir:=${vyatta_prefix}/sbin} +: ${vyatta_sysconfdir:=${vyatta_prefix}/etc} +: ${BOOTFILE:=${vyatta_sysconfdir:-/opt/vyatta/etc}/config/config.boot} +: ${DEFAULT_BOOTFILE:=${vyatta_sysconfdir:-/opt/vyatta/etc}/config.boot.default} + +if [ ! -f $BOOTFILE ] ; then + cp $DEFAULT_BOOTFILE $BOOTFILE + chgrp quaggavty $BOOTFILE + chmod 660 $BOOTFILE +fi + +shopt -s extglob nullglob + +# load cfg_eth_hwid array from config file as follows +# interface { +# ... +# ethernet eth# { +# ... +# hw-id: XX:XX:XX:XX:XX:XX +# ... +# } +# } +# +# cfg_eth_hwid=( "eth#=xx:xx:xx:xx:xx:xx" ... ) + +declare -a cfg_net_hwid=( $( sed -ne ' + /^interfaces {/,/^}/ { + /^ *ethernet eth[0-9]* {/,/^ $/ { + /^ *ethernet/ { + s/.* eth\([0-9]\+\) {$/ eth\1=/ +# hold interface name + h + } + /^.*hw-id:/ { +# translate field name + s/.*hw-id: *// +# tolower hex mac address + y/ABCDEF/abcdef/ +# exchange hold and pattern space + x +# concatenate hold and pattern + G + s/\n//p + } + } + }' $BOOTFILE )) + +for name_hwid in ${cfg_net_hwid[@]} ; do + name=${name_hwid%=*} + hwid=${name_hwid#*=} + ethn=${name/eth/} + [[ $ethn -gt $last_ethn ]] && \ + last_ethn=$ethn + if [ "$hwid" == "$attr_address" ] ; then + # we mod the config file interface sub-clock in case it is missing + # "link-detect" + [[ "$BOOTFILE" != *test_* ]] && \ + ${vyatta_sbindir}/mod_bootfile_eth_hwid $BOOTFILE $name $attr_address + echo $name + exit 0 + fi + [ "$name" == "$kname" ] && \ + match=$name_hwid +done + +[ -z "$kname" ] && \ + exit 1 + +# have not found matching hwid in config, see if we can use kernel name +if [ -z "$match" ] ; then + # the kernel interface name isnot in config + # so, we might as well use it + name=$kname + cmd=add +elif [ -z "${match#*=}" ] ; then + # the config has this interface but the sub-block is missing the hwid + # so again, we might as well use the kernel name + name=$kname + cmd=mod +else + # The device mac address is not in the config but the config + # has another hwid associated with the device name. This + # indicates that the device is either a replacement or new but + # detected earlier than the device configured with this name. + # Since this is non-deterministic, we make a new name. + (( ethn = last_ethn + 1 )) + name=eth$ethn + cmd=add +fi + +[[ "$BOOTFILE" != *test_* ]] && \ + ${vyatta_sbindir}/${cmd}_bootfile_eth_hwid $BOOTFILE $name $attr_address + +echo $name + +# Local Variables: +# mode: shell-script +# sh-indentation: 4 +# End: |