poky/scripts/runqemu-ifdown
Richard Purdie ffae400179 meta/lib+scripts: Convert to SPDX license headers
This adds SPDX license headers in place of the wide assortment of things
currently in our script headers. We default to GPL-2.0-only except for the
oeqa code where it was clearly submitted and marked as MIT on the most part
or some scripts which had the "or later" GPL versioning.

The patch also drops other obsolete bits of file headers where they were
encoountered such as editor modelines, obsolete maintainer information or
the phrase "All rights reserved" which is now obsolete and not required in
copyright headers (in this case its actually confusing for licensing as all
rights were not reserved).

More work is needed for OE-Core but this takes care of the bulk of the scripts
and meta/lib directories.

The top level LICENSE files are tweaked to match the new structure and the
SPDX naming.

(From OE-Core rev: f8c9c511b5f1b7dbd45b77f345cb6c048ae6763e)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
2019-05-09 16:31:55 +01:00

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#!/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
#
# SPDX-License-Identifier: GPL-2.0-only
#
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
STAGING_BINDIR_NATIVE=$2
TUNCTL=$STAGING_BINDIR_NATIVE/tunctl
if [ ! -e "$TUNCTL" ]; then
echo "Error: Unable to find tunctl binary in '$STAGING_BINDIR_NATIVE', please bitbake qemu-helper-native"
exit 1
fi
$TUNCTL -d $TAP
IFCONFIG=`which ip 2> /dev/null`
if [ "x$IFCONFIG" = "x" ]; then
# better than nothing...
IFCONFIG=/sbin/ip
fi
if [ -x "$IFCONFIG" ]; then
if `$IFCONFIG link show $TAP > /dev/null 2>&1`; then
$IFCONFIG link del $TAP
fi
fi
# cleanup the remaining iptables rules
IPTABLES=`which iptables 2> /dev/null`
if [ "x$IPTABLES" = "x" ]; then
IPTABLES=/sbin/iptables
fi
if [ ! -x "$IPTABLES" ]; then
echo "$IPTABLES cannot be executed"
exit 1
fi
n=$[ (`echo $TAP | sed 's/tap//'` * 2) + 1 ]
dest=$[ (`echo $TAP | sed 's/tap//'` * 2) + 2 ]
$IPTABLES -D POSTROUTING -t nat -j MASQUERADE -s 192.168.7.$n/32
$IPTABLES -D POSTROUTING -t nat -j MASQUERADE -s 192.168.7.$dest/32