3 # QEMU network configuration script to bring down tap devices. This
4 # utility needs to be run as root, and will use the tunctl binary
5 # from the native sysroot.
7 # If you find yourself calling this script a lot, you can add the
8 # the following to your /etc/sudoers file to be able to run this
9 # command without entering your password each time:
11 # <my-username> ALL=NOPASSWD: /path/to/runqemu-ifup
12 # <my-username> ALL=NOPASSWD: /path/to/runqemu-ifdown
14 # Copyright (c) 2006-2011 Linux Foundation
16 # This program is free software; you can redistribute it and/or modify
17 # it under the terms of the GNU General Public License version 2 as
18 # published by the Free Software Foundation.
20 # This program is distributed in the hope that it will be useful,
21 # but WITHOUT ANY WARRANTY; without even the implied warranty of
22 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 # GNU General Public License for more details.
25 # You should have received a copy of the GNU General Public License along
26 # with this program; if not, write to the Free Software Foundation, Inc.,
27 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
30 echo "sudo $(basename $0) <tap-dev> <native-sysroot-basedir>"
33 if [ $EUID -ne 0 ]; then
34 echo "Error: This script (runqemu-ifdown) must be run with root privileges"
46 TUNCTL=$NATIVE_SYSROOT_DIR/usr/bin/tunctl
47 if [ ! -e "$TUNCTL" ]; then
48 echo "Error: Unable to find tunctl binary in '$NATIVE_SYSROOT_DIR/usr/bin', please bitbake qemu-helper-native"
54 # cleanup the remaining iptables rules
55 IPTABLES=`which iptables 2> /dev/null`
56 if [ "x$IPTABLES" = "x" ]; then
57 IPTABLES=/sbin/iptables
59 if [ ! -x "$IPTABLES" ]; then
60 echo "$IPTABLES cannot be executed"
63 n=$[ (`echo $TAP | sed 's/tap//'` * 2) + 1 ]
64 dest=$[ (`echo $TAP | sed 's/tap//'` * 2) + 2 ]
65 $IPTABLES -D POSTROUTING -t nat -j MASQUERADE -s 192.168.7.$n/32
66 $IPTABLES -D POSTROUTING -t nat -j MASQUERADE -s 192.168.7.$dest/32