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authorAnton Gerasimov <anton@advancedtelematic.com>2016-08-16 12:17:17 +0200
committerAnton Gerasimov <anton@advancedtelematic.com>2016-08-16 12:26:30 +0200
commitd7b72388c217690f31c615700573e46413680907 (patch)
tree66cf0870f3b3e887af4dc9caeb83aa013d8e3e76 /meta-sota/scripts/runqemu-gen-tapdevs
parent2b33f745fcdfbf147360294f394a42660549bfd2 (diff)
Add support for emulating OSTree updates in qemux86: new live image,
u-boot that can be used as BIOS, machine that uses both and fork of poky runqemu supporting the new live image. Bug-AGL: SPEC-236 Change-Id: Id99d122c05a00eb94902e8f6907455a1e681f2a3 Signed-off-by: Anton Gerasimov <anton@advancedtelematic.com>
Diffstat (limited to 'meta-sota/scripts/runqemu-gen-tapdevs')
-rwxr-xr-xmeta-sota/scripts/runqemu-gen-tapdevs100
1 files changed, 100 insertions, 0 deletions
diff --git a/meta-sota/scripts/runqemu-gen-tapdevs b/meta-sota/scripts/runqemu-gen-tapdevs
new file mode 100755
index 0000000..624deac
--- /dev/null
+++ b/meta-sota/scripts/runqemu-gen-tapdevs
@@ -0,0 +1,100 @@
+#!/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.
+#
+# 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 <uid> <gid> <num> <native-sysroot-basedir>"
+ 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"
+ exit 1
+}
+
+if [ $EUID -ne 0 ]; then
+ echo "Error: This script must be run with root privileges"
+ exit
+fi
+
+if [ $# -ne 4 ]; then
+ echo "Error: Incorrect number of arguments"
+ usage
+fi
+
+TUID=$1
+GID=$2
+COUNT=$3
+SYSROOT=$4
+
+TUNCTL=$SYSROOT/usr/bin/tunctl
+if [[ ! -x "$TUNCTL" || -d "$TUNCTL" ]]; then
+ echo "Error: $TUNCTL is not an executable"
+ usage
+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 $SCRIPT_DIR"
+ exit 1
+fi
+
+IFCONFIG=`which ip 2> /dev/null`
+if [ -z "$IFCONFIG" ]; then
+ # Is it ever anywhere else?
+ IFCONFIG=/sbin/ip
+fi
+if [ ! -x "$IFCONFIG" ]; then
+ echo "$IFCONFIG cannot be executed"
+ exit 1
+fi
+
+# Ensure we start with a clean slate
+for tap in `$IFCONFIG link | grep tap | awk '{ print \$2 }' | sed s/://`; do
+ echo "Note: Destroying pre-existing tap interface $tap..."
+ $TUNCTL -d $tap
+done
+
+echo "Creating $COUNT tap devices for UID: $TUID GID: $GID..."
+for ((index=0; index < $COUNT; index++)); do
+ echo "Creating tap$index"
+ ifup=`$RUNQEMU_IFUP $TUID $GID $SYSROOT 2>&1`
+ if [ $? -ne 0 ]; then
+ echo "Error running tunctl: $ifup"
+ exit 1
+ fi
+done
+
+if [ $COUNT -gt 0 ]; then
+ 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*"
+fi
+
+# 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