Add helper script to mount partitions from images

Change-Id: Iefd2a7fce7ae074dfa305da52e1efea1073331a9
Reviewed-by: Risto Avila <risto.avila@qt.io>

scripts/mount-image.sh

+#!/bin/sh
+############################################################################
+##
+## Copyright (C) 2016 The Qt Company Ltd.
+## Contact: https://www.qt.io/licensing/
+##
+## This file is part of the Boot to Qt meta layer.
+##
+## $QT_BEGIN_LICENSE:GPL$
+## Commercial License Usage
+## Licensees holding valid commercial Qt licenses may use this file in
+## accordance with the commercial license agreement provided with the
+## Software or, alternatively, in accordance with the terms contained in
+## a written agreement between you and The Qt Company. For licensing terms
+## and conditions see https://www.qt.io/terms-conditions. For further
+## information use the contact form at https://www.qt.io/contact-us.
+##
+## GNU General Public License Usage
+## Alternatively, this file may be used under the terms of the GNU
+## General Public License version 3 or (at your option) any later version
+## approved by the KDE Free Qt Foundation. The licenses are as published by
+## the Free Software Foundation and appearing in the file LICENSE.GPL3
+## included in the packaging of this file. Please review the following
+## information to ensure the GNU General Public License requirements will
+## be met: https://www.gnu.org/licenses/gpl-3.0.html.
+##
+## $QT_END_LICENSE$
+##
+############################################################################
+
+set -e
+
+if [ $# -ne 1 ]; then
+    echo "Usage: $0 <image>"
+    echo "Mount the two partitions (boot and rootfs) from the image to current folder"
+    exit 1
+fi
+
+IMAGE=$1
+
+if [ ! -f "${IMAGE}" ]; then
+    echo "Image '${IMAGE}' not found"
+    exit 1
+fi
+
+mkdir -p boot
+mkdir -p root
+
+sudo umount boot root || true
+
+OFFSET=$(parted "${IMAGE}" unit B print | grep "^ 1" | awk {'print $2'} | cut -d B -f 1)
+sudo mount -o loop,offset=${OFFSET} "${IMAGE}" boot
+
+OFFSET=$(parted "${IMAGE}" unit B print | grep "^ 2" | awk {'print $2'} | cut -d B -f 1)
+sudo mount -o loop,offset=${OFFSET} "${IMAGE}" root