9e1e717bf7
Ignore itnerfaces with other names than what the runqemu scripts created. (From OE-Core rev: e99ec79a423d09b9308e3d42f0832ee583b1456d) Signed-off-by: Adrian Freihofer <adrian.freihofer@siemens.com> Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
2.6 KiB
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
Copyright (C) 2010 Intel Corp.
SPDX-License-Identifier: GPL-2.0-only
gid=id -g
if [ -n "$SUDO_GID" ]; then
gid=$SUDO_GID
fi
usage() { echo "Usage: sudo $0 " echo "Where is the numeric group id the tap devices will be owned by" echo " is the number of tap devices to create (0 to remove all)" echo "For example:" echo "$ bitbake qemu-helper-native" echo "$ sudo $0 $gid 4" echo "" exit 1 }
Allow passing 4 arguments for backward compatibility with warning
if [ $# -gt 4 ]; then echo "Error: Incorrect number of arguments" usage fi if [ $# -gt 3 ]; then echo "Warning: Ignoring the parameter. It is no longer needed." fi if [ $# -gt 2 ]; then echo "Warning: Ignoring the parameter. It is no longer needed." GID=$2 COUNT=$3 elif [ $# -eq 2 ]; then GID=$1 COUNT=$2 else echo "Error: Incorrect number of arguments" usage fi
if [ -z "$OE_TAP_NAME" ]; then OE_TAP_NAME=tap fi
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 $SCRIPT_DIR"
exit 1
fi
if interfaces=ip tuntap list 2>/dev/null; then
interfaces=echo "$interfaces" |cut -f1 -d: |grep -E "^$OE_TAP_NAME.*"
else
echo "Failed to call 'ip tuntap list'" >&2
exit 1
fi
Ensure we start with a clean slate
for tap in $interfaces; do echo "Note: Destroying pre-existing tap interface $tap..." ip tuntap del $tap mode tap done rm -f /etc/runqemu-nosudo
if [ $COUNT -eq 0 ]; then exit 0 fi
echo "Creating $COUNT tap devices for GID: $GID..."
for ((index=0; index < $COUNT; index++)); do
echo "Creating $OE_TAP_NAME$index"
if ! ifup=$RUNQEMU_IFUP $GID 2>&1; then
echo "Error bringing up interface: $ifup"
exit 1
fi
done
echo "Note: For systems running NetworkManager, it's recommended" echo "Note: that the tap devices be set as unmanaged in the" echo "Note: NetworkManager.conf file. Add the following lines to" echo "Note: /etc/NetworkManager/NetworkManager.conf" echo "[keyfile]" echo "unmanaged-devices=interface-name:$OE_TAP_NAME*"
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