mirror of
git://git.yoctoproject.org/poky.git
synced 2025-07-19 12:59:02 +02:00
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>
115 lines
3.1 KiB
Bash
Executable File
115 lines
3.1 KiB
Bash
Executable File
#!/bin/bash
|
|
#
|
|
# Create a "bank" of tap network devices that can be used by the
|
|
# runqemu script. This script needs to be run as root, and will
|
|
# use the tunctl binary from the build system sysroot. Note: many Linux
|
|
# distros these days still use an older version of tunctl which does not
|
|
# support the group permissions option, hence the need to use the build
|
|
# system provided version.
|
|
#
|
|
# Copyright (C) 2010 Intel Corp.
|
|
#
|
|
# SPDX-License-Identifier: GPL-2.0-only
|
|
#
|
|
|
|
uid=`id -u`
|
|
gid=`id -g`
|
|
if [ -n "$SUDO_UID" ]; then
|
|
uid=$SUDO_UID
|
|
fi
|
|
if [ -n "$SUDO_GID" ]; then
|
|
gid=$SUDO_GID
|
|
fi
|
|
|
|
usage() {
|
|
echo "Usage: sudo $0 <uid> <gid> <num> <staging_bindir_native>"
|
|
echo "Where <uid> is the numeric user id the tap devices will be owned by"
|
|
echo "Where <gid> is the numeric group id the tap devices will be owned by"
|
|
echo "<num> is the number of tap devices to create (0 to remove all)"
|
|
echo "<native-sysroot-basedir> is the path to the build system's native sysroot"
|
|
echo "For example:"
|
|
echo "$ bitbake qemu-helper-native"
|
|
echo "$ sudo $0 $uid $gid 4 tmp/sysroots-components/x86_64/qemu-helper-native/usr/bin"
|
|
echo ""
|
|
exit 1
|
|
}
|
|
|
|
if [ $# -ne 4 ]; then
|
|
echo "Error: Incorrect number of arguments"
|
|
usage
|
|
fi
|
|
|
|
TUID=$1
|
|
GID=$2
|
|
COUNT=$3
|
|
STAGING_BINDIR_NATIVE=$4
|
|
|
|
# check if COUNT is a number and >= 0
|
|
if ! [ $COUNT -ge 0 ]; then
|
|
echo "Error: Incorrect count: $COUNT"
|
|
exit 1
|
|
fi
|
|
|
|
if [ $EUID -ne 0 ]; then
|
|
echo "Error: This script must be run with root privileges"
|
|
exit
|
|
fi
|
|
|
|
SCRIPT_DIR=`dirname $0`
|
|
RUNQEMU_IFUP="$SCRIPT_DIR/runqemu-ifup"
|
|
if [ ! -x "$RUNQEMU_IFUP" ]; then
|
|
echo "Error: Unable to find the runqemu-ifup script in $SCRIPT_DIR"
|
|
exit 1
|
|
fi
|
|
|
|
TUNCTL=$STAGING_BINDIR_NATIVE/tunctl
|
|
ip_supports_tuntap=false
|
|
if interfaces=`ip tuntap list` 2>/dev/null; then
|
|
ip_supports_tuntap=true
|
|
interfaces=`echo "$interfaces |cut -f1 -d:`
|
|
elif [[ ! -x "$TUNCTL" || -d "$TUNCTL" ]]; then
|
|
echo "Error: $TUNCTL is not an executable"
|
|
usage
|
|
elif interfaces=`ip link` 2>/dev/null; then
|
|
interfaces=`echo "$interfaces" | sed '/^[0-9]\+: \(docker[0-9]\+\):.*/!d; s//\1/'`
|
|
else
|
|
echo "Failed to call 'ip link'" >&2
|
|
exit 1
|
|
fi
|
|
|
|
# Ensure we start with a clean slate
|
|
for tap in $interfaces; do
|
|
echo "Note: Destroying pre-existing tap interface $tap..."
|
|
if $ip_supports_tuntap; then
|
|
ip tuntap del $tap mode tap
|
|
else
|
|
$TUNCTL -d $tap
|
|
fi
|
|
done
|
|
rm -f /etc/runqemu-nosudo
|
|
|
|
if [ $COUNT -eq 0 ]; then
|
|
exit 0
|
|
fi
|
|
|
|
echo "Creating $COUNT tap devices for UID: $TUID GID: $GID..."
|
|
for ((index=0; index < $COUNT; index++)); do
|
|
echo "Creating tap$index"
|
|
if ! ifup=`$RUNQEMU_IFUP $TUID $GID $STAGING_BINDIR_NATIVE 2>&1`; then
|
|
echo "Error running tunctl: $ifup"
|
|
exit 1
|
|
fi
|
|
done
|
|
|
|
echo "Note: For systems running NetworkManager, it's recommended"
|
|
echo "Note: that the tap devices be set as unmanaged in the"
|
|
echo "Note: NetworkManager.conf file. Add the following lines to"
|
|
echo "Note: /etc/NetworkManager/NetworkManager.conf"
|
|
echo "[keyfile]"
|
|
echo "unmanaged-devices=interface-name:tap*"
|
|
|
|
# The runqemu script will check for this file, and if it exists,
|
|
# will use the existing bank of tap devices without creating
|
|
# additional ones via sudo.
|
|
touch /etc/runqemu-nosudo
|