#!/bin/bash # # QEMU network configuration script to bring down tap devices. This # utility needs to be run as root, and will use the tunctl binary # from the native sysroot. # # If you find yourself calling this script a lot, you can add the # the following to your /etc/sudoers file to be able to run this # command without entering your password each time: # # <my-username> ALL=NOPASSWD: /path/to/runqemu-ifup # <my-username> ALL=NOPASSWD: /path/to/runqemu-ifdown # # Copyright (c) 2006-2011 Linux Foundation # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License version 2 as # published by the Free Software Foundation. # # 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, write to the Free Software Foundation, Inc., # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. usage() { echo "sudo $(basename $0) <tap-dev> <native-sysroot-basedir>" } if [ $EUID -ne 0 ]; then echo "Error: This script (runqemu-ifdown) must be run with root privileges" exit 1 fi if [ $# -ne 2 ]; then usage exit 1 fi TAP=$1 NATIVE_SYSROOT_DIR=$2 TUNCTL=$NATIVE_SYSROOT_DIR/usr/bin/tunctl if [ ! -e "$TUNCTL" ]; then echo "Error: Unable to find tunctl binary in '$NATIVE_SYSROOT_DIR/usr/bin'" exit 1 fi $TUNCTL -d $TAP