diff options
Diffstat (limited to 'scripts')
| -rwxr-xr-x | scripts/poky-gen-tapdevs | 85 | ||||
| -rwxr-xr-x | scripts/poky-qemu-internal | 11 |
2 files changed, 96 insertions, 0 deletions
diff --git a/scripts/poky-gen-tapdevs b/scripts/poky-gen-tapdevs new file mode 100755 index 0000000000..2117a7b08e --- /dev/null +++ b/scripts/poky-gen-tapdevs @@ -0,0 +1,85 @@ +#!/bin/bash +# +# Create a "bank" of tap network devices that can be used by the +# poky-qemu script. This script needs to be run as root, and will +# use the tunctl binary from a Poky 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 Poky's +# version. +# +# Copyright (C) 2010 Intel Corp. +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License version 2 as +# published by the Free Software Foundation. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License along +# with this program; if not, write to the Free Software Foundation, Inc., +# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + +usage() { + echo "Usage: sudo $0 <gid> <num> <native-sysroot-basedir>" + 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 Poky's native sysroot" + exit 1 +} + +if [ $EUID -ne 0 ]; then + echo "Error: This script must be run with root privileges" + exit +fi + +if [ $# -ne 3 ]; then + echo "Error: Incorrect number of arguments" + usage +fi + +GID=$1 +COUNT=$2 +SYSROOT=$3 + +TUNCTL=$SYSROOT/usr/bin/tunctl +if [[ ! -x "$TUNCTL" || -d "$TUNCTL" ]]; then + echo "Error: $TUNCTL is not an executable" + usage +fi + +SCRIPT_DIR=`dirname $0` +POKY_QEMU_IFUP="$SCRIPT_DIR/poky-qemu-ifup" +if [ ! -x "$POKY_QEMU_IFUP" ]; then + echo "Error: Unable to find the poky-qemu-ifup script in $SCRIPT_DIR" + exit 1 +fi + +IFCONFIG=`which ifconfig` +if [ -z "$IFCONFIG" ]; then + # Is it ever anywhere else? + IFCONFIG=/sbin/ifconfig +fi + +# Ensure we start with a clean slate +for tap in `$IFCONFIG | grep ^tap | awk '{ print \$1 }'`; do + echo "Note: Destroying pre-existing tap interface $tap..." + $TUNCTL -d $tap +done + +echo "Creating $COUNT tap devices for GID $GID..." +for ((index=0; index < $COUNT; index++)); do + echo "Creating tap$index" + ifup=`$POKY_QEMU_IFUP $GID $SYSROOT 2>&1` + if [ $? -ne 0 ]; then + echo "Error running tunctl: $ifup" + exit 1 + fi +done + +# The poky-qemu script will check for this file, and if it exists, +# will use the existing bank of tap devices without creating +# additional ones via sudo. +touch /etc/poky-nosudo diff --git a/scripts/poky-qemu-internal b/scripts/poky-qemu-internal index c3720d9ce2..0ea38eef60 100755 --- a/scripts/poky-qemu-internal +++ b/scripts/poky-qemu-internal @@ -50,6 +50,10 @@ if [ -z "$QEMU_MEMORY" ]; then fi +# This flag file is created when poky-gen-tapdevs creates a bank of +# tap devices, indicating that the user does not have sudo privs. +NOSUDO_FLAG="/etc/poky-nosudo" + QEMUIFUP=`which poky-qemu-ifup` QEMUIFDOWN=`which poky-qemu-ifdown` @@ -81,6 +85,13 @@ for tap in $POSSIBLE; do done if [ "$TAP" = "" ]; then + if [ -e "$NOSUDO_FLAG" ]; then + echo "Error: There are no available tap devices to use for networking," + echo "and I see $NOSUDO_FLAG exists, so I am not going to try creating" + echo "a new one with sudo." + exit 1 + fi + GROUPID=`id -g` echo 'Setting up tap interface under sudo' tap=`sudo $QEMUIFUP $GROUPID $POKY_NATIVE_SYSROOT` |