mod_image_for_recovery: supprt new recovery model

mod_image_for_dev_recovery.sh

-#!/bin/bash
-
-# Copyright (c) 2010 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 create a Chrome OS dev recovery image using a dev install shim
-
-# Source constants and utility functions
-. "$(dirname "$0")/resize_stateful_partition.sh"
-
-get_default_board
-
-# Constants
-TEMP_IMG=$(mktemp "/tmp/temp_img.XXXXXX")
-
-DEFINE_string board "$DEFAULT_BOARD" "Board for which the image was built \
-Default: ${DEFAULT_BOARD}"
-DEFINE_string dev_install_shim "" "Path of the developer install shim. \
-Default: (empty)"
-DEFINE_string payload_dir "" "Directory containing developer payload and \
-(optionally) a custom install script. Default: (empty)"
-
-# Parse command line
-FLAGS "$@" || exit 1
-eval set -- "${FLAGS_ARGV}"
-
-set -e
-
-# No board set and no default set then we can't proceed
-if [ -z $FLAGS_board ] ; then
-  setup_board_warning
-  die "No board set"
-fi
-
-# Abort early if --payload_dir is not set, invalid or empty
-if [ -z $FLAGS_payload_dir ] ; then
-  die "flag --payload_dir not set"
-fi
-
-if [ ! -d "${FLAGS_payload_dir}" ] ; then
-  die "${FLAGS_payload_dir} is not a directory"
-fi
-
-PAYLOAD_DIR_SIZE=
-if [ -z "$(ls -A $FLAGS_payload_dir)" ] ; then
-  die "${FLAGS_payload_dir} is empty"
-else
-  # Get directory size in 512-byte sectors so we can resize stateful partition
-  PAYLOAD_DIR_SIZE=\
-"$(du --apparent-size -B 512 ${FLAGS_payload_dir} | awk '{print $1}')"
-  info "${FLAGS_payload_dir} has ${PAYLOAD_DIR_SIZE} 512-byte sectors"
-fi
-
-DEV_INSTALL_SHIM="dev_install_shim.bin"
-# We have a board name but no dev_install_shim set. Try find a recent one
-if [ -z $FLAGS_dev_install_shim ] ; then
-  IMAGES_DIR="${DEFAULT_BUILD_ROOT}/images/${FLAGS_board}"
-  FLAGS_dev_install_shim=\
-"${IMAGES_DIR}/$(ls -t $IMAGES_DIR 2>&-| head -1)/${DEV_INSTALL_SHIM}"
-fi
-
-# Turn relative path into an absolute path.
-FLAGS_dev_install_shim=$(eval readlink -f ${FLAGS_dev_install_shim})
-
-# Abort early if we can't find the install shim
-if [ ! -f $FLAGS_dev_install_shim ] ; then
-  die "No dev install shim found at $FLAGS_dev_install_shim"
-else
-  info "Using a recent dev install shim at ${FLAGS_dev_install_shim}"
-fi
-
-# Constants
-INSTALL_SHIM_DIR="$(dirname "$FLAGS_dev_install_shim")"
-DEV_RECOVERY_IMAGE="dev_recovery_image.bin"
-
-# Creates a dev recovery image using an existing dev install shim
-# If successful, content of --payload_dir is copied to a directory named
-# "dev_payload" under the root of stateful partition.
-create_dev_recovery_image() {
-  local temp_state=$(mktemp "/tmp/temp_state.XXXXXX")
-  local stateful_offset=$(partoffset ${FLAGS_dev_install_shim} 1)
-  local stateful_count=$(partsize ${FLAGS_dev_install_shim} 1)
-  dd if="${FLAGS_dev_install_shim}" of="${temp_state}" conv=notrunc bs=512 \
-    skip=${stateful_offset} count=${stateful_count} &>/dev/null
-
-  local resized_sectors=$(enlarge_partition_image $temp_state $PAYLOAD_DIR_SIZE)
-
-  # Mount resized stateful FS and copy payload content to its root directory
-  local temp_mnt=$(mktemp -d "/tmp/temp_mnt.XXXXXX")
-  local loop_dev=$(get_loop_dev)
-  trap "cleanup_loop_dev ${loop_dev}" EXIT
-  mkdir -p "${temp_mnt}"
-  sudo mount -o loop=${loop_dev} "${temp_state}" "${temp_mnt}"
-  trap "umount_from_loop_dev ${temp_mnt} && rm -f \"${temp_state}\"" EXIT
-  sudo cp -R "${FLAGS_payload_dir}" "${temp_mnt}/dev_payload"
-
-  # Mark image as dev recovery
-  sudo touch "${temp_mnt}/.recovery"
-  sudo touch "${temp_mnt}/.dev_recovery"
-
-  # TODO(tgao): handle install script (for default and custom cases)
-  (update_partition_table $FLAGS_dev_install_shim $temp_state \
-       $resized_sectors $TEMP_IMG)
-
-  # trap handler will clean up loop device and temp mount point
-}
-
-# Main
-DST_PATH="${INSTALL_SHIM_DIR}/${DEV_RECOVERY_IMAGE}"
-info "Attempting to create dev recovery image using dev install shim \
-${FLAGS_dev_install_shim}"
-(create_dev_recovery_image)
-
-if [ -n ${TEMP_IMG} ] && [ -f ${TEMP_IMG} ]; then
-  mv -f $TEMP_IMG $DST_PATH
-  info "Dev recovery image created at ${DST_PATH}"
-else
-  info "Failed to create developer recovery image"
-fi