blob: 61febf5cccbef9568d6cf172d65b096611af3f00 [file] [log] [blame]
# Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
# Script to mount a partition chromiumos image.
# Rootfs with ext2 RO-bit turned on will be mounted with read-only flags,
# and other kinds of file systems will be mounted in read-writable mode.
. "$(dirname "$(readlink -f "$0")")/" || exit 1
main() {
set -e
# Check parameter and environment.
if [ "$#" != 3 ]; then
die "Usage: $0 cros_image_file partition_index mount_point
Ex: $0 chromiumos_image.bin 3 /media"
if ! image_has_part_tools; then
die "Missing partition tools. Please install cgpt/parted, or run in chroot."
local image_file="$1"
local partition_index="$2"
local mount_point="$3"
# Basic checking
[ -f "$image_file" ] || die "Cannot find image file: $image_file"
[ -d "$mount_point" ] || die "Invalid mount point: $mount_point"
# Check image format.
local part_offset="$(
image_part_offset "$image_file" "$partition_index" 2>/dev/null)" || true
if [ -z "$part_offset" ] || [ "$part_offset" -le "0" ]; then
die "Invalid image file $image_file for partition #$partition_index."
# Try to mount with default options, or RO+ext2 if that failed.
if ! image_mount_partition "$image_file" "$partition_index" "$mount_point" \
"rw" "" 2>/dev/null; then
# "-t ext2" must be explicitly specified otherwise ext4+ file system module
# may change some meta data inside superblock, even in read-only mode.
image_mount_partition "$image_file" "$partition_index" "$mount_point" \
"ro" "-t ext2" ||
die "Failed to mount $image_file partition #$partition_index."
warn "WARNING: PARTITION #$partition_index IS READ-ONLY!"
info "Mounted $image_file#$partition_index at $mount_point."
main "$@"