make_factory_package.sh - mirrors/cros/chromiumos/platform/crosutils - Git at Google

 #!/bin/bash

 # Copyright (c) 2009 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 generate a factory install partition set and miniomaha.conf
 # file from a release image and a factory image. This creates a server
 # configuration that can be installed using a factory install shim.
 #
 # miniomaha lives in src/platform/dev/ and miniomaha partition sets live
 # in src/platform/dev/static.

 # --- BEGIN COMMON.SH BOILERPLATE ---
 # Load common CrOS utilities.  Inside the chroot this file is installed in
 # /usr/lib/crosutils.  Outside the chroot we find it relative to the script's
 # location.
 find_common_sh() {
   local common_paths=(/usr/lib/crosutils $(dirname "$(readlink -f "$0")"))
   local path

   SCRIPT_ROOT=
   for path in "${common_paths[@]}"; do
     if [ -r "${path}/common.sh" ]; then
       SCRIPT_ROOT=${path}
       break
     fi
   done
 }

 find_common_sh
 . "${SCRIPT_ROOT}/common.sh" || (echo "Unable to load common.sh" && exit 1)
 # --- END COMMON.SH BOILERPLATE ---

 # Load functions and constants for chromeos-install
 # NOTE: This script needs to be called from outside the chroot.
 . "/usr/lib/installer/chromeos-common.sh" &> /dev/null || \
 . "${SRC_ROOT}/platform/installer/chromeos-common.sh" || \
   die "Unable to load /usr/lib/installer/chromeos-common.sh"

 # Load functions designed for image processing
 . "${SCRIPT_ROOT}/lib/cros_image_common.sh" ||
   die "Cannot load required library: lib/cros_image_common.sh; Abort."

 get_default_board

 # Flags
 DEFINE_string board "${DEFAULT_BOARD}" "Board for which the image was built"
 DEFINE_string factory "" \
   "Directory and file containing factory image: /path/chromiumos_test_image.bin"
 DEFINE_string firmware_updater "" \
   "If set, include the firmware shellball into the server configuration"
 DEFINE_string release "" \
   "Directory and file containing release image: /path/chromiumos_image.bin"
 DEFINE_string subfolder "" \
   "If set, the name of the subfolder to put the payload items inside"
 DEFINE_string diskimg "" \
   "If set, the name of the diskimage file to output"
 DEFINE_boolean preserve ${FLAGS_FALSE} \
   "If set, reuse the diskimage file, if available"
 DEFINE_integer sectors 31277232  "Size of image in sectors"

 # Parse command line
 FLAGS "$@" || exit 1
 eval set -- "${FLAGS_ARGV}"

 if [ ! -f "${FLAGS_release}" ]; then
   echo "Cannot find image file ${FLAGS_release}"
   exit 1
 fi

 if [ ! -f "${FLAGS_factory}" ]; then
   echo "Cannot find image file ${FLAGS_factory}"
   exit 1
 fi

 if [ -n "${FLAGS_firmware_updater}" ] &&
    [ ! -f "${FLAGS_firmware_updater}" ]; then
   echo "Cannot find firmware file ${FLAGS_firmware_updater}"
   exit 1
 fi

 # Convert args to paths.  Need eval to un-quote the string so that shell
 # chars like ~ are processed; just doing FOO=`readlink -f ${FOO}` won't work.
 OMAHA_DIR="${SRC_ROOT}/platform/dev"
 OMAHA_CONF="${OMAHA_DIR}/miniomaha.conf"
 OMAHA_DATA_DIR="${OMAHA_DIR}/static/"

 # Note: The subfolder flag can only append configs.  That means you will need
 # to have unique board IDs for every time you run.  If you delete miniomaha.conf
 # you can still use this flag and it will start fresh.
 if [ -n "${FLAGS_subfolder}" ]; then
   OMAHA_DATA_DIR="${OMAHA_DIR}/static/${FLAGS_subfolder}/"
 fi

 if [ ${INSIDE_CHROOT} -eq 0 ]; then
   echo "Caching sudo authentication"
   sudo -v
   echo "Done"
 fi

 # Use this image as the source image to copy
 RELEASE_DIR="$(dirname "${FLAGS_release}")"
 FACTORY_DIR="$(dirname "${FLAGS_factory}")"
 RELEASE_IMAGE="$(basename "${FLAGS_release}")"
 FACTORY_IMAGE="$(basename "${FLAGS_factory}")"

 prepare_img() {
   local outdev="$(readlink -f "$FLAGS_diskimg")"
   local sectors="$FLAGS_sectors"
   local force_full="true"

   # We'll need some code to put in the PMBR, for booting on legacy BIOS.
   echo "Fetch PMBR"
   local pmbrcode="$(mktemp -d)/gptmbr.bin"
   sudo dd bs=512 count=1 if="${FLAGS_release}" of="${pmbrcode}" status=noxfer

   echo "Prepare base disk image"
   # Create an output file if requested, or if none exists.
   if [ -b "${outdev}" ] ; then
     echo "Using block device ${outdev}"
   elif [ ! -e "${outdev}" -o \
         "$(stat -c %s ${outdev})" != "$(( ${sectors} * 512 ))"  -o \
         "$FLAGS_preserve" = "$FLAGS_FALSE" ]; then
     echo "Generating empty image file"
     image_dump_partial_file /dev/zero 0 "${sectors}" |
         dd of="${outdev}" bs=8M
   else
     echo "Reusing $outdev"
   fi

   # Create GPT partition table.
   locate_gpt
   install_gpt "${outdev}" 0 0 "${pmbrcode}" 0 "${force_full}"
   # Activate the correct partition.
   sudo "${GPT}" add -i 2 -S 1 -P 1 "${outdev}"
 }

 prepare_omaha() {
   sudo rm -rf "${OMAHA_DATA_DIR}/rootfs-test.gz"
   sudo rm -rf "${OMAHA_DATA_DIR}/rootfs-release.gz"
   rm -rf "${OMAHA_DATA_DIR}/efi.gz"
   rm -rf "${OMAHA_DATA_DIR}/oem.gz"
   rm -rf "${OMAHA_DATA_DIR}/state.gz"
   if [ ! -d "${OMAHA_DATA_DIR}" ]; then
     mkdir -p "${OMAHA_DATA_DIR}"
   fi
 }

 prepare_dir() {
   sudo rm -rf rootfs-test.gz
   sudo rm -rf rootfs-release.gz
   rm -rf efi.gz
   rm -rf oem.gz
   rm -rf state.gz
 }

 compress_and_hash_memento_image() {
   local input_file="$1"

   if [ -n "${IMAGE_IS_UNPACKED}" ]; then
     sudo "${SCRIPTS_DIR}/mk_memento_images.sh" part_2 part_3 |
       grep hash |
       awk '{print $4}'
   else
     sudo "${SCRIPTS_DIR}/mk_memento_images.sh" "$input_file" 2 3 |
       grep hash |
       awk '{print $4}'
   fi
 }

 compress_and_hash_file() {
   local input_file="$1"
   local output_file="$2"

   if [ -z "$input_file" ]; then
     # Runs as a pipe processor
     image_gzip_compress -c -9 |
     tee "$output_file" |
     openssl sha1 -binary |
     openssl base64
   else
     image_gzip_compress -c -9 "$input_file" |
     tee "$output_file" |
     openssl sha1 -binary |
     openssl base64
   fi
 }

 compress_and_hash_partition() {
   local input_file="$1"
   local part_num="$2"
   local output_file="$3"

   if [ -n "${IMAGE_IS_UNPACKED}" ]; then
     compress_and_hash_file "part_$part_num" "$output_file"
   else
     image_dump_partition "$input_file" "$part_num" |
     compress_and_hash_file "" "$output_file"
   fi
 }

 # Decide if we should unpack partition
 if image_has_part_tools; then
   IMAGE_IS_UNPACKED=
 else
   #TODO(hungte) Currently we run unpack_partitions.sh if part_tools are not
   # found. If the format of unpack_partitions.sh is reliable, we can prevent
   # creating temporary files. See image_part_offset for more information.
   echo "WARNING: cannot find partition tools. Using unpack_partitions.sh." >&2
   IMAGE_IS_UNPACKED=1
 fi

 mount_esp() {
   local image="$1"
   local esp_mountpoint="$2"
   offset=$(partoffset "${image}" 12)
   sudo mount -o loop,offset=$(( offset * 512 )) \
       "${image}" "${esp_mountpoint}"
   ESP_MOUNT="${esp_mountpoint}"
 }

 umount_esp() {
   if [ -n "${ESP_MOUNT}" ]; then
     sudo umount "${ESP_MOUNT}"
   fi
 }

 generate_img() {
   local outdev="$(readlink -f "$FLAGS_diskimg")"
   local sectors="$FLAGS_sectors"

   prepare_img

   # Get the release image.
   pushd "${RELEASE_DIR}" >/dev/null

   echo "Release Kernel"
   image_partition_copy "${RELEASE_IMAGE}" 2 "${outdev}" 4
   echo "Release Rootfs"
   image_partition_copy "${RELEASE_IMAGE}" 3 "${outdev}" 5
   echo "OEM parition"
   image_partition_copy "${RELEASE_IMAGE}" 8 "${outdev}" 8

   popd >/dev/null

   # Go to retrieve the factory test image.
   pushd "${FACTORY_DIR}" >/dev/null

   echo "Factory Kernel"
   image_partition_copy "${FACTORY_IMAGE}" 2 "${outdev}" 2
   echo "Factory Rootfs"
   image_partition_copy "${FACTORY_IMAGE}" 3 "${outdev}" 3
   echo "Factory Stateful"
   image_partition_copy "${FACTORY_IMAGE}" 1 "${outdev}" 1
   echo "EFI Partition"
   image_partition_copy "${FACTORY_IMAGE}" 12 "${outdev}" 12

   # TODO(nsanders, wad): consolidate this code into some common code
   # when cleaning up kernel commandlines. There is code that touches
   # this in postint/chromeos-setimage and build_image. However none
   # of the preexisting code actually does what we want here.
   local tmpesp="$(mktemp -d)"
   mount_esp "${outdev}" "${tmpesp}"

   trap "umount_esp" EXIT

   # Edit boot device default for legacy.
   # Support both vboot and regular boot.
   sudo sed -i "s/chromeos-usb.A/chromeos-hd.A/" \
       "${tmpesp}"/syslinux/default.cfg
   sudo sed -i "s/chromeos-vusb.A/chromeos-vhd.A/" \
       "${tmpesp}"/syslinux/default.cfg

   # Edit root fs default for legacy
   # Somewhat safe as ARM does not support syslinux, I believe.
   sudo sed -i "s'HDROOTA'/dev/sda3'g" "${tmpesp}"/syslinux/root.A.cfg

   trap - EXIT

   umount_esp

   echo "Generated Image at $outdev."
   echo "Done"
 }

 generate_omaha() {
   # Clean up stale config and data files.
   prepare_omaha

   # Get the release image.
   pushd "${RELEASE_DIR}" >/dev/null
   echo "Generating omaha release image from ${FLAGS_release}"
   echo "Generating omaha factory image from ${FLAGS_factory}"
   echo "Output omaha image to ${OMAHA_DATA_DIR}"
   echo "Output omaha config to ${OMAHA_CONF}"

   prepare_dir

   if [ -n "${IMAGE_IS_UNPACKED}" ]; then
     echo "Unpacking image ${RELEASE_IMAGE} ..." >&2
     sudo ./unpack_partitions.sh "${RELEASE_IMAGE}" 2>/dev/null
   fi

   release_hash="$(compress_and_hash_memento_image "${RELEASE_IMAGE}")"
   sudo chmod a+rw update.gz
   mv update.gz rootfs-release.gz
   mv rootfs-release.gz "${OMAHA_DATA_DIR}"
   echo "release: ${release_hash}"

   oem_hash="$(compress_and_hash_partition "${RELEASE_IMAGE}" 8 "oem.gz")"
   mv oem.gz "${OMAHA_DATA_DIR}"
   echo "oem: ${oem_hash}"

   popd >/dev/null

   # Go to retrieve the factory test image.
   pushd "${FACTORY_DIR}" >/dev/null
   prepare_dir

   if [ -n "${IMAGE_IS_UNPACKED}" ]; then
     echo "Unpacking image ${FACTORY_IMAGE} ..." >&2
     sudo ./unpack_partitions.sh "${FACTORY_IMAGE}" 2>/dev/null
   fi

   test_hash="$(compress_and_hash_memento_image "${FACTORY_IMAGE}")"
   sudo chmod a+rw update.gz
   mv update.gz rootfs-test.gz
   mv rootfs-test.gz "${OMAHA_DATA_DIR}"
   echo "test: ${test_hash}"

   state_hash="$(compress_and_hash_partition "${FACTORY_IMAGE}" 1 "state.gz")"
   mv state.gz "${OMAHA_DATA_DIR}"
   echo "state: ${state_hash}"

   efi_hash="$(compress_and_hash_partition "${FACTORY_IMAGE}" 12 "efi.gz")"
   mv efi.gz "${OMAHA_DATA_DIR}"
   echo "efi: ${efi_hash}"

   popd >/dev/null

   if [ -n "${FLAGS_firmware_updater}" ]; then
     SHELLBALL="${FLAGS_firmware_updater}"
     if [ ! -f  "$SHELLBALL" ]; then
       echo "Failed to find firmware updater: $SHELLBALL."
       exit 1
     fi

     firmware_hash="$(compress_and_hash_file "$SHELLBALL" "firmware.gz")"
     mv firmware.gz "${OMAHA_DATA_DIR}"
     echo "firmware: ${firmware_hash}"
   fi

   # If the file does exist and we are using the subfolder flag we are going to
   # append another config.
   if [ -n "${FLAGS_subfolder}" ] &&
      [ -f "${OMAHA_CONF}" ]; then
     # Remove the ']' from the last line of the file
     # so we can add another config.
     while  [ -s "${OMAHA_CONF}" ]; do
       # If the last line is null
       if [ -z "$(tail -1 "${OMAHA_CONF}")" ]; then
         sed -i '$d' "${OMAHA_CONF}"
       elif [ "$(tail -1 "${OMAHA_CONF}")" != ']' ]; then
         sed -i '$d' "${OMAHA_CONF}"
       else
         break
       fi
     done

     # Remove the last ]
     if [ "$(tail -1 "${OMAHA_CONF}")" = ']' ]; then
       sed -i '$d' "${OMAHA_CONF}"
     fi

     # If the file is empty, create it from scratch
     if [ ! -s "${OMAHA_CONF}" ]; then
       echo "config = [" >"${OMAHA_CONF}"
     fi
   else
     echo "config = [" >"${OMAHA_CONF}"
   fi

   if [ -n "${FLAGS_subfolder}" ]; then
     subfolder="${FLAGS_subfolder}/"
   fi

   echo -n "{
    'qual_ids': set([\"${FLAGS_board}\"]),
    'factory_image': '${subfolder}rootfs-test.gz',
    'factory_checksum': '${test_hash}',
    'release_image': '${subfolder}rootfs-release.gz',
    'release_checksum': '${release_hash}',
    'oempartitionimg_image': '${subfolder}oem.gz',
    'oempartitionimg_checksum': '${oem_hash}',
    'efipartitionimg_image': '${subfolder}efi.gz',
    'efipartitionimg_checksum': '${efi_hash}',
    'stateimg_image': '${subfolder}state.gz',
    'stateimg_checksum': '${state_hash}'," >>"${OMAHA_CONF}"

   if [ -n "${FLAGS_firmware_updater}" ]  ; then
     echo -n "
    'firmware_image': '${subfolder}firmware.gz',
    'firmware_checksum': '${firmware_hash}'," >>"${OMAHA_CONF}"
   fi

   echo -n "
  },
 ]
 " >>"${OMAHA_CONF}"

   echo "The miniomaha server lives in src/platform/dev.
 To validate the configutarion, run:
   python2.6 devserver.py --factory_config miniomaha.conf \
   --validate_factory_config
 To run the server:
   python2.6 devserver.py --factory_config miniomaha.conf"
 }

 # Main
 if [ -n "$FLAGS_diskimg" ]; then
   generate_img
 else
   generate_omaha
 fi
	#!/bin/bash

	# Copyright (c) 2009 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 generate a factory install partition set and miniomaha.conf
	# file from a release image and a factory image. This creates a server
	# configuration that can be installed using a factory install shim.
	#
	# miniomaha lives in src/platform/dev/ and miniomaha partition sets live
	# in src/platform/dev/static.

	# --- BEGIN COMMON.SH BOILERPLATE ---
	# Load common CrOS utilities. Inside the chroot this file is installed in
	# /usr/lib/crosutils. Outside the chroot we find it relative to the script's
	# location.
	find_common_sh() {
	local common_paths=(/usr/lib/crosutils $(dirname "$(readlink -f "$0")"))
	local path

	SCRIPT_ROOT=
	for path in "${common_paths[@]}"; do
	if [ -r "${path}/common.sh" ]; then
	SCRIPT_ROOT=${path}
	break
	fi
	done
	}

	find_common_sh
	. "${SCRIPT_ROOT}/common.sh" \|\| (echo "Unable to load common.sh" && exit 1)
	# --- END COMMON.SH BOILERPLATE ---

	# Load functions and constants for chromeos-install
	# NOTE: This script needs to be called from outside the chroot.
	. "/usr/lib/installer/chromeos-common.sh" &> /dev/null \|\| \
	. "${SRC_ROOT}/platform/installer/chromeos-common.sh" \|\| \
	die "Unable to load /usr/lib/installer/chromeos-common.sh"

	# Load functions designed for image processing
	. "${SCRIPT_ROOT}/lib/cros_image_common.sh" \|\|
	die "Cannot load required library: lib/cros_image_common.sh; Abort."

	get_default_board

	# Flags
	DEFINE_string board "${DEFAULT_BOARD}" "Board for which the image was built"
	DEFINE_string factory "" \
	"Directory and file containing factory image: /path/chromiumos_test_image.bin"
	DEFINE_string firmware_updater "" \
	"If set, include the firmware shellball into the server configuration"
	DEFINE_string release "" \
	"Directory and file containing release image: /path/chromiumos_image.bin"
	DEFINE_string subfolder "" \
	"If set, the name of the subfolder to put the payload items inside"
	DEFINE_string diskimg "" \
	"If set, the name of the diskimage file to output"
	DEFINE_boolean preserve ${FLAGS_FALSE} \
	"If set, reuse the diskimage file, if available"
	DEFINE_integer sectors 31277232 "Size of image in sectors"

	# Parse command line
	FLAGS "$@" \|\| exit 1
	eval set -- "${FLAGS_ARGV}"

	if [ ! -f "${FLAGS_release}" ]; then
	echo "Cannot find image file ${FLAGS_release}"
	exit 1
	fi

	if [ ! -f "${FLAGS_factory}" ]; then
	echo "Cannot find image file ${FLAGS_factory}"
	exit 1
	fi

	if [ -n "${FLAGS_firmware_updater}" ] &&
	[ ! -f "${FLAGS_firmware_updater}" ]; then
	echo "Cannot find firmware file ${FLAGS_firmware_updater}"
	exit 1
	fi

	# Convert args to paths. Need eval to un-quote the string so that shell
	# chars like ~ are processed; just doing FOO=`readlink -f ${FOO}` won't work.
	OMAHA_DIR="${SRC_ROOT}/platform/dev"
	OMAHA_CONF="${OMAHA_DIR}/miniomaha.conf"
	OMAHA_DATA_DIR="${OMAHA_DIR}/static/"

	# Note: The subfolder flag can only append configs. That means you will need
	# to have unique board IDs for every time you run. If you delete miniomaha.conf
	# you can still use this flag and it will start fresh.
	if [ -n "${FLAGS_subfolder}" ]; then
	OMAHA_DATA_DIR="${OMAHA_DIR}/static/${FLAGS_subfolder}/"
	fi

	if [ ${INSIDE_CHROOT} -eq 0 ]; then
	echo "Caching sudo authentication"
	sudo -v
	echo "Done"
	fi

	# Use this image as the source image to copy
	RELEASE_DIR="$(dirname "${FLAGS_release}")"
	FACTORY_DIR="$(dirname "${FLAGS_factory}")"
	RELEASE_IMAGE="$(basename "${FLAGS_release}")"
	FACTORY_IMAGE="$(basename "${FLAGS_factory}")"

	prepare_img() {
	local outdev="$(readlink -f "$FLAGS_diskimg")"
	local sectors="$FLAGS_sectors"
	local force_full="true"

	# We'll need some code to put in the PMBR, for booting on legacy BIOS.
	echo "Fetch PMBR"
	local pmbrcode="$(mktemp -d)/gptmbr.bin"
	sudo dd bs=512 count=1 if="${FLAGS_release}" of="${pmbrcode}" status=noxfer

	echo "Prepare base disk image"
	# Create an output file if requested, or if none exists.
	if [ -b "${outdev}" ] ; then
	echo "Using block device ${outdev}"
	elif [ ! -e "${outdev}" -o \
	"$(stat -c %s ${outdev})" != "$(( ${sectors} * 512 ))" -o \
	"$FLAGS_preserve" = "$FLAGS_FALSE" ]; then
	echo "Generating empty image file"
	image_dump_partial_file /dev/zero 0 "${sectors}" \|
	dd of="${outdev}" bs=8M
	else
	echo "Reusing $outdev"
	fi

	# Create GPT partition table.
	locate_gpt
	install_gpt "${outdev}" 0 0 "${pmbrcode}" 0 "${force_full}"
	# Activate the correct partition.
	sudo "${GPT}" add -i 2 -S 1 -P 1 "${outdev}"
	}

	prepare_omaha() {
	sudo rm -rf "${OMAHA_DATA_DIR}/rootfs-test.gz"
	sudo rm -rf "${OMAHA_DATA_DIR}/rootfs-release.gz"
	rm -rf "${OMAHA_DATA_DIR}/efi.gz"
	rm -rf "${OMAHA_DATA_DIR}/oem.gz"
	rm -rf "${OMAHA_DATA_DIR}/state.gz"
	if [ ! -d "${OMAHA_DATA_DIR}" ]; then
	mkdir -p "${OMAHA_DATA_DIR}"
	fi
	}

	prepare_dir() {
	sudo rm -rf rootfs-test.gz
	sudo rm -rf rootfs-release.gz
	rm -rf efi.gz
	rm -rf oem.gz
	rm -rf state.gz
	}

	compress_and_hash_memento_image() {
	local input_file="$1"

	if [ -n "${IMAGE_IS_UNPACKED}" ]; then
	sudo "${SCRIPTS_DIR}/mk_memento_images.sh" part_2 part_3 \|
	grep hash \|
	awk '{print $4}'
	else
	sudo "${SCRIPTS_DIR}/mk_memento_images.sh" "$input_file" 2 3 \|
	grep hash \|
	awk '{print $4}'
	fi
	}

	compress_and_hash_file() {
	local input_file="$1"
	local output_file="$2"

	if [ -z "$input_file" ]; then
	# Runs as a pipe processor
	image_gzip_compress -c -9 \|
	tee "$output_file" \|
	openssl sha1 -binary \|
	openssl base64
	else
	image_gzip_compress -c -9 "$input_file" \|
	tee "$output_file" \|
	openssl sha1 -binary \|
	openssl base64
	fi
	}

	compress_and_hash_partition() {
	local input_file="$1"
	local part_num="$2"
	local output_file="$3"

	if [ -n "${IMAGE_IS_UNPACKED}" ]; then
	compress_and_hash_file "part_$part_num" "$output_file"
	else
	image_dump_partition "$input_file" "$part_num" \|
	compress_and_hash_file "" "$output_file"
	fi
	}

	# Decide if we should unpack partition
	if image_has_part_tools; then
	IMAGE_IS_UNPACKED=
	else
	#TODO(hungte) Currently we run unpack_partitions.sh if part_tools are not
	# found. If the format of unpack_partitions.sh is reliable, we can prevent
	# creating temporary files. See image_part_offset for more information.
	echo "WARNING: cannot find partition tools. Using unpack_partitions.sh." >&2
	IMAGE_IS_UNPACKED=1
	fi

	mount_esp() {
	local image="$1"
	local esp_mountpoint="$2"
	offset=$(partoffset "${image}" 12)
	sudo mount -o loop,offset=$(( offset * 512 )) \
	"${image}" "${esp_mountpoint}"
	ESP_MOUNT="${esp_mountpoint}"
	}

	umount_esp() {
	if [ -n "${ESP_MOUNT}" ]; then
	sudo umount "${ESP_MOUNT}"
	fi
	}

	generate_img() {
	local outdev="$(readlink -f "$FLAGS_diskimg")"
	local sectors="$FLAGS_sectors"

	prepare_img

	# Get the release image.
	pushd "${RELEASE_DIR}" >/dev/null

	echo "Release Kernel"
	image_partition_copy "${RELEASE_IMAGE}" 2 "${outdev}" 4
	echo "Release Rootfs"
	image_partition_copy "${RELEASE_IMAGE}" 3 "${outdev}" 5
	echo "OEM parition"
	image_partition_copy "${RELEASE_IMAGE}" 8 "${outdev}" 8

	popd >/dev/null

	# Go to retrieve the factory test image.
	pushd "${FACTORY_DIR}" >/dev/null

	echo "Factory Kernel"
	image_partition_copy "${FACTORY_IMAGE}" 2 "${outdev}" 2
	echo "Factory Rootfs"
	image_partition_copy "${FACTORY_IMAGE}" 3 "${outdev}" 3
	echo "Factory Stateful"
	image_partition_copy "${FACTORY_IMAGE}" 1 "${outdev}" 1
	echo "EFI Partition"
	image_partition_copy "${FACTORY_IMAGE}" 12 "${outdev}" 12

	# TODO(nsanders, wad): consolidate this code into some common code
	# when cleaning up kernel commandlines. There is code that touches
	# this in postint/chromeos-setimage and build_image. However none
	# of the preexisting code actually does what we want here.
	local tmpesp="$(mktemp -d)"
	mount_esp "${outdev}" "${tmpesp}"

	trap "umount_esp" EXIT

	# Edit boot device default for legacy.
	# Support both vboot and regular boot.
	sudo sed -i "s/chromeos-usb.A/chromeos-hd.A/" \
	"${tmpesp}"/syslinux/default.cfg
	sudo sed -i "s/chromeos-vusb.A/chromeos-vhd.A/" \
	"${tmpesp}"/syslinux/default.cfg

	# Edit root fs default for legacy
	# Somewhat safe as ARM does not support syslinux, I believe.
	sudo sed -i "s'HDROOTA'/dev/sda3'g" "${tmpesp}"/syslinux/root.A.cfg

	trap - EXIT

	umount_esp

	echo "Generated Image at $outdev."
	echo "Done"
	}

	generate_omaha() {
	# Clean up stale config and data files.
	prepare_omaha

	# Get the release image.
	pushd "${RELEASE_DIR}" >/dev/null
	echo "Generating omaha release image from ${FLAGS_release}"
	echo "Generating omaha factory image from ${FLAGS_factory}"
	echo "Output omaha image to ${OMAHA_DATA_DIR}"
	echo "Output omaha config to ${OMAHA_CONF}"

	prepare_dir

	if [ -n "${IMAGE_IS_UNPACKED}" ]; then
	echo "Unpacking image ${RELEASE_IMAGE} ..." >&2
	sudo ./unpack_partitions.sh "${RELEASE_IMAGE}" 2>/dev/null
	fi

	release_hash="$(compress_and_hash_memento_image "${RELEASE_IMAGE}")"
	sudo chmod a+rw update.gz
	mv update.gz rootfs-release.gz
	mv rootfs-release.gz "${OMAHA_DATA_DIR}"
	echo "release: ${release_hash}"

	oem_hash="$(compress_and_hash_partition "${RELEASE_IMAGE}" 8 "oem.gz")"
	mv oem.gz "${OMAHA_DATA_DIR}"
	echo "oem: ${oem_hash}"

	popd >/dev/null

	# Go to retrieve the factory test image.
	pushd "${FACTORY_DIR}" >/dev/null
	prepare_dir

	if [ -n "${IMAGE_IS_UNPACKED}" ]; then
	echo "Unpacking image ${FACTORY_IMAGE} ..." >&2
	sudo ./unpack_partitions.sh "${FACTORY_IMAGE}" 2>/dev/null
	fi

	test_hash="$(compress_and_hash_memento_image "${FACTORY_IMAGE}")"
	sudo chmod a+rw update.gz
	mv update.gz rootfs-test.gz
	mv rootfs-test.gz "${OMAHA_DATA_DIR}"
	echo "test: ${test_hash}"

	state_hash="$(compress_and_hash_partition "${FACTORY_IMAGE}" 1 "state.gz")"
	mv state.gz "${OMAHA_DATA_DIR}"
	echo "state: ${state_hash}"

	efi_hash="$(compress_and_hash_partition "${FACTORY_IMAGE}" 12 "efi.gz")"
	mv efi.gz "${OMAHA_DATA_DIR}"
	echo "efi: ${efi_hash}"

	popd >/dev/null

	if [ -n "${FLAGS_firmware_updater}" ]; then
	SHELLBALL="${FLAGS_firmware_updater}"
	if [ ! -f "$SHELLBALL" ]; then
	echo "Failed to find firmware updater: $SHELLBALL."
	exit 1
	fi

	firmware_hash="$(compress_and_hash_file "$SHELLBALL" "firmware.gz")"
	mv firmware.gz "${OMAHA_DATA_DIR}"
	echo "firmware: ${firmware_hash}"
	fi

	# If the file does exist and we are using the subfolder flag we are going to
	# append another config.
	if [ -n "${FLAGS_subfolder}" ] &&
	[ -f "${OMAHA_CONF}" ]; then
	# Remove the ']' from the last line of the file
	# so we can add another config.
	while [ -s "${OMAHA_CONF}" ]; do
	# If the last line is null
	if [ -z "$(tail -1 "${OMAHA_CONF}")" ]; then
	sed -i '$d' "${OMAHA_CONF}"
	elif [ "$(tail -1 "${OMAHA_CONF}")" != ']' ]; then
	sed -i '$d' "${OMAHA_CONF}"
	else
	break
	fi
	done

	# Remove the last ]
	if [ "$(tail -1 "${OMAHA_CONF}")" = ']' ]; then
	sed -i '$d' "${OMAHA_CONF}"
	fi

	# If the file is empty, create it from scratch
	if [ ! -s "${OMAHA_CONF}" ]; then
	echo "config = [" >"${OMAHA_CONF}"
	fi
	else
	echo "config = [" >"${OMAHA_CONF}"
	fi

	if [ -n "${FLAGS_subfolder}" ]; then
	subfolder="${FLAGS_subfolder}/"
	fi

	echo -n "{
	'qual_ids': set([\"${FLAGS_board}\"]),
	'factory_image': '${subfolder}rootfs-test.gz',
	'factory_checksum': '${test_hash}',
	'release_image': '${subfolder}rootfs-release.gz',
	'release_checksum': '${release_hash}',
	'oempartitionimg_image': '${subfolder}oem.gz',
	'oempartitionimg_checksum': '${oem_hash}',
	'efipartitionimg_image': '${subfolder}efi.gz',
	'efipartitionimg_checksum': '${efi_hash}',
	'stateimg_image': '${subfolder}state.gz',
	'stateimg_checksum': '${state_hash}'," >>"${OMAHA_CONF}"

	if [ -n "${FLAGS_firmware_updater}" ] ; then
	echo -n "
	'firmware_image': '${subfolder}firmware.gz',
	'firmware_checksum': '${firmware_hash}'," >>"${OMAHA_CONF}"
	fi

	echo -n "
	},
	]
	" >>"${OMAHA_CONF}"

	echo "The miniomaha server lives in src/platform/dev.
	To validate the configutarion, run:
	python2.6 devserver.py --factory_config miniomaha.conf \
	--validate_factory_config
	To run the server:
	python2.6 devserver.py --factory_config miniomaha.conf"
	}

	# Main
	if [ -n "$FLAGS_diskimg" ]; then
	generate_img
	else
	generate_omaha
	fi