blob: a104c37bf8b40751ed9db9a14ab2d03ace014192 [file] [log] [blame]
Patrick Williamsc124f4f2015-09-15 14:41:29 -05001#!/bin/bash
2#
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.
6#
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:
10#
11# <my-username> ALL=NOPASSWD: /path/to/runqemu-ifup
12# <my-username> ALL=NOPASSWD: /path/to/runqemu-ifdown
13#
14# Copyright (c) 2006-2011 Linux Foundation
15#
Brad Bishopc342db32019-05-15 21:57:59 -040016# SPDX-License-Identifier: GPL-2.0-only
Patrick Williamsc124f4f2015-09-15 14:41:29 -050017#
Patrick Williamsc124f4f2015-09-15 14:41:29 -050018
19usage() {
20 echo "sudo $(basename $0) <tap-dev> <native-sysroot-basedir>"
21}
22
23if [ $EUID -ne 0 ]; then
24 echo "Error: This script (runqemu-ifdown) must be run with root privileges"
25 exit 1
26fi
27
28if [ $# -ne 2 ]; then
29 usage
30 exit 1
31fi
32
33TAP=$1
Brad Bishop6e60e8b2018-02-01 10:27:11 -050034STAGING_BINDIR_NATIVE=$2
Patrick Williamsc124f4f2015-09-15 14:41:29 -050035
Brad Bishop6e60e8b2018-02-01 10:27:11 -050036TUNCTL=$STAGING_BINDIR_NATIVE/tunctl
Patrick Williamsc124f4f2015-09-15 14:41:29 -050037if [ ! -e "$TUNCTL" ]; then
Brad Bishop6e60e8b2018-02-01 10:27:11 -050038 echo "Error: Unable to find tunctl binary in '$STAGING_BINDIR_NATIVE', please bitbake qemu-helper-native"
Patrick Williamsc124f4f2015-09-15 14:41:29 -050039 exit 1
40fi
41
42$TUNCTL -d $TAP
43
Brad Bishop1a4b7ee2018-12-16 17:11:34 -080044IFCONFIG=`which ip 2> /dev/null`
45if [ "x$IFCONFIG" = "x" ]; then
46 # better than nothing...
47 IFCONFIG=/sbin/ip
48fi
49if [ -x "$IFCONFIG" ]; then
50 if `$IFCONFIG link show $TAP > /dev/null 2>&1`; then
51 $IFCONFIG link del $TAP
52 fi
53fi
Patrick Williamsc124f4f2015-09-15 14:41:29 -050054# cleanup the remaining iptables rules
55IPTABLES=`which iptables 2> /dev/null`
56if [ "x$IPTABLES" = "x" ]; then
57 IPTABLES=/sbin/iptables
58fi
59if [ ! -x "$IPTABLES" ]; then
60 echo "$IPTABLES cannot be executed"
61 exit 1
62fi
63n=$[ (`echo $TAP | sed 's/tap//'` * 2) + 1 ]
64dest=$[ (`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