abeb4f1a7c
When runqemu tries to call runqemu-ifup to create tap devices, it checks the output of runqemu-ifup to get the newly created tap device. The behavior of runqemu-ifup was recently modified along with its output, it no longer expects the uid parameter to be passed and it prints out a warning if it was, since this warning was now part of the output runqemu tries to parse it and convert it to an int() which proved impossible. Pass the correct arguments to the runqemu-ifup call and echo the warning to stderr instead to make sure its not being parsed and used by runqemu in any case. (From OE-Core rev: ce3a2f4cec28290c8e530989f17243f1ada4e3bd) Signed-off-by: Alejandro Enedino Hernandez Samaniego <alejandro@enedino.org> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
2.7 KiB
Executable File
#!/bin/bash
QEMU network interface configuration script. This utility needs to
be run as root, and will use the ip utility
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:
ALL=NOPASSWD: /path/to/runqemu-ifup
ALL=NOPASSWD: /path/to/runqemu-ifdown
If you'd like to create a bank of tap devices at once, you should use
the runqemu-gen-tapdevs script instead. If tap devices are set up using
that script, the runqemu script will never end up calling this
script.
Copyright (c) 2006-2011 Linux Foundation
SPDX-License-Identifier: GPL-2.0-only
usage() { echo "sudo $(basename $0) " }
if [ $EUID -ne 0 ]; then echo "Error: This script (runqemu-ifup) must be run with root privileges" exit 1 fi
if [ $# -eq 2 ]; then echo "Warning: uid parameter is ignored. It is no longer needed." >&2 GROUP="$2" elif [ $# -eq 1 ]; then GROUP="$1" else usage exit 1 fi
if [ -z "$OE_TAP_NAME" ]; then OE_TAP_NAME=tap fi
if taps=$(ip tuntap list 2>/dev/null); then tap_no_last=$(echo "$taps" |cut -f 1 -d ":" |grep -E "^$OE_TAP_NAME.*" |sed "s/$OE_TAP_NAME//g" | sort -rn | head -n 1) if [ -z "$tap_no_last" ]; then tap_no=0 else tap_no=$(("$tap_no_last" + 1)) fi ip tuntap add "$OE_TAP_NAME$tap_no" mode tap group "$GROUP" && TAP=$OE_TAP_NAME$tap_no fi
if [ -z "$TAP" ]; then echo "Error: Unable to find a tap device to use" exit 1 fi
IPTOOL=which ip 2> /dev/null
if [ "x$IPTOOL" = "x" ]; then
# better than nothing...
IPTOOL=/sbin/ip
fi
if [ ! -x "$IPTOOL" ]; then
echo "$IPTOOL cannot be executed"
exit 1
fi
IPTABLES=which iptables 2> /dev/null
if [ "x$IPTABLES" = "x" ]; then
IPTABLES=/sbin/iptables
fi
if [ ! -x "$IPTABLES" ]; then
echo "$IPTABLES cannot be executed"
exit 1
fi
n=$[ (echo $TAP | sed "s/$OE_TAP_NAME//" * 2) + 1 ]
$IPTOOL addr add 192.168.7.$n/32 broadcast 192.168.7.255 dev $TAP
STATUS=$?
if [ $STATUS -ne 0 ]; then
echo "Failed to set up IP addressing on $TAP"
exit 1
fi
$IPTOOL link set dev $TAP up
STATUS=$?
if [ $STATUS -ne 0 ]; then
echo "Failed to bring up $TAP"
exit 1
fi
dest=$[ (echo $TAP | sed "s/$OE_TAP_NAME//" * 2) + 2 ]
$IPTOOL route add to 192.168.7.$dest dev $TAP
STATUS=$?
if [ $STATUS -ne 0 ]; then
echo "Failed to add route to 192.168.7.$dest using $TAP"
exit 1
fi
setup NAT for tap0 interface to have internet access in QEMU
$IPTABLES -A POSTROUTING -t nat -j MASQUERADE -s 192.168.7.$n/32 $IPTABLES -A POSTROUTING -t nat -j MASQUERADE -s 192.168.7.$dest/32 echo 1 > /proc/sys/net/ipv4/ip_forward echo 1 > /proc/sys/net/ipv4/conf/$TAP/proxy_arp $IPTABLES -P FORWARD ACCEPT
echo $TAP