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[/] [openrisc/] [tags/] [or1ksim/] [or1ksim-0.5.0rc3/] [brend-static.sh] - Rev 771
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#!/bin/bash # Copyright (C) 2010 ORSoC AB # Copyright (C) 2010 Embecosm Limited # Contributor Julius Baxter <julius.baxter@orsoc.se> # Contributor Jeremy Bennett <jeremy.bennett@embecosm.com> # This file is a superuser script to close down an Ethernet bridge and restore # the simple Ethernet interface. # This program is free software; you can redistribute it and/or modify it # under the terms of the GNU General Public License as published by the Free # Software Foundation; either version 3 of the License, or (at your option) # any later version. # This program is distributed in the hope that it will be useful, but WITHOUT # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for # more details. # You should have received a copy of the GNU General Public License along # with this program. If not, see <http://www.gnu.org/licenses/>. # ------------------------------------------------------------------------------ # Pre-requisites: bridge-utils must be installed. # Usage: ./brend-static.sh <bridge> <eth> <tap> # - <bridge> is the bridge interface to use, e.g. br0 # - <eth> is the hardware ethernet interface to use, e.g. eth0 # - <tap> is the tap interface to use, e.g. tap0 # Check we have the right number of arguments if [ "x$#" != "x3" ] then echo "Usage: ./brend-static.sh <bridge> <eth> <tap>" exit 1 fi # Check we are root euid=`id -un` if [ "x${euid}" != "xroot" ] then echo "Must run as root" exit 1 fi # Break out the arguments br=$1 eth=$2 tap=$3 # Determine the IP address, netmask and broadcast of the bridge. eth_ip=`ifconfig $br | \ grep "inet addr" | \ head -1 | \ sed -e 's/^.*inet addr:\([^ \t]*\).*$/\1/'` eth_netmask=`ifconfig $br | \ grep "Mask" | \ head -1 | \ sed -e 's/^.*Mask:\([^ \t]*\).*$/\1/'` eth_broadcast=`ifconfig $br | \ grep "Bcast" | \ head -1 | \ sed -e 's/^.*Bcast:\([^ \t]*\).*$/\1/'` # Close the firewall to the tap and bridge iptables -D INPUT -i ${tap} -j ACCEPT iptables -D INPUT -i ${br} -j ACCEPT iptables -D FORWARD -i ${br} -j ACCEPT # Take down the bridge and delete it ifconfig ${br} down if [ $? != 0 ] then echo "Failed to take down ${br}" exit 1 fi brctl delbr ${br} if [ $? != 0 ] then echo "Failed to take delete ${br}" exit 1 fi # Delete the TAP interface. Note we mustn't have anything using it. It's # rather harsh, but we use fuser to ensure this (it will take out all users of # any TAP/TUN interface). fuser -k /dev/net/tun openvpn --rmtun --dev ${tap} if [ $? != 0 ] then echo "Failed to remove ${tap}" exit 1 fi # Restore the Ethernet interface, using the IP address, netmask and broadcast # mask from earlier. ifconfig ${eth} ${eth_ip} netmask ${eth_netmask} broadcast ${eth_broadcast}
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