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d43c41fcaf
The *ip* command supports the creation and destruction of TAP devices since 2009 and might be more likely installed on systems then *tunctl*. Therefore it should be tried to setup or teardown the TAP interface with *ip* before falling back to *tunctl*. https://git.kernel.org/pub/scm/network/iproute2/iproute2.git/commit/?id=580fbd88f75cc9eea0d28a48c025b090eb9419a7 (From OE-Core rev: 424ede206baae1c228583aab1df6c18513ac104f) Signed-off-by: Jörg Sommer <joerg.sommer@navimatix.de> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
70 lines
1.7 KiB
Bash
Executable File
70 lines
1.7 KiB
Bash
Executable File
#!/bin/bash
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#
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# QEMU network configuration script to bring down tap devices. This
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# utility needs to be run as root, and will use the tunctl binary
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# from the native sysroot.
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#
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# If you find yourself calling this script a lot, you can add the
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# the following to your /etc/sudoers file to be able to run this
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# command without entering your password each time:
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#
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# <my-username> ALL=NOPASSWD: /path/to/runqemu-ifup
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# <my-username> ALL=NOPASSWD: /path/to/runqemu-ifdown
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#
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# Copyright (c) 2006-2011 Linux Foundation
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#
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# SPDX-License-Identifier: GPL-2.0-only
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#
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usage() {
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echo "sudo $(basename $0) <tap-dev> <native-sysroot-basedir>"
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}
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if [ $EUID -ne 0 ]; then
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echo "Error: This script (runqemu-ifdown) must be run with root privileges"
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exit 1
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fi
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if [ $# -ne 2 ]; then
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usage
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exit 1
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fi
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TAP=$1
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STAGING_BINDIR_NATIVE=$2
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if !ip tuntap del $TAP mode tap 2>/dev/null; then
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TUNCTL=$STAGING_BINDIR_NATIVE/tunctl
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if [ ! -e "$TUNCTL" ]; then
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echo "Error: Unable to find tunctl binary in '$STAGING_BINDIR_NATIVE', please bitbake qemu-helper-native"
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exit 1
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fi
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$TUNCTL -d $TAP
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fi
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IFCONFIG=`which ip 2> /dev/null`
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if [ "x$IFCONFIG" = "x" ]; then
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# better than nothing...
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IFCONFIG=/sbin/ip
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fi
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if [ -x "$IFCONFIG" ]; then
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if `$IFCONFIG link show $TAP > /dev/null 2>&1`; then
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$IFCONFIG link del $TAP
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fi
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fi
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# cleanup the remaining iptables rules
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IPTABLES=`which iptables 2> /dev/null`
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if [ "x$IPTABLES" = "x" ]; then
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IPTABLES=/sbin/iptables
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fi
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if [ ! -x "$IPTABLES" ]; then
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echo "$IPTABLES cannot be executed"
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exit 1
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fi
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n=$[ (`echo $TAP | sed 's/tap//'` * 2) + 1 ]
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dest=$[ (`echo $TAP | sed 's/tap//'` * 2) + 2 ]
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$IPTABLES -D POSTROUTING -t nat -j MASQUERADE -s 192.168.7.$n/32
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$IPTABLES -D POSTROUTING -t nat -j MASQUERADE -s 192.168.7.$dest/32
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true
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