issue 2825046

mod_image_for_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 modify a pristine/dev Chrome OS image to be used for recovery
 
 . "$(dirname "$0")/common.sh"
 
+# Load functions and constants for chromeos-install
+. "$(dirname "$0")/chromeos-common.sh"
+
 # Script must be run inside the chroot.
 restart_in_chroot_if_needed $*
 
-DEFINE_string image_dir "" \
-  "Directory to pristine/base image."
-DEFINE_string image_name "chromiumos_image.bin" \
-  "Name of Chrome OS image to modify."
+get_default_board
+
+DEFINE_string board "$DEFAULT_BOARD" "Board for which the image was built"
+DEFINE_string image "" "Location of the rootfs raw image file"
 
 # Parse command line
 FLAGS "$@" || exit 1
 eval set -- "${FLAGS_ARGV}"
 
-set -e
+# No board, no default and no image set then we can't find the image
+if [ -z $FLAGS_image ] && [ -z $FLAGS_board ] ; then
+  setup_board_warning
+  die "mod_image_for_recovery failed.  No board set and no image set"
+fi
 
-if [ -z $FLAGS_image_dir ] || [ ! -d $FLAGS_image_dir ]; then
-  echo "Error: invalid flag --image_dir"
+# We have a board name but no image set.  Use image at default location
+if [ -z $FLAGS_image ] ; then
+  IMAGES_DIR="${DEFAULT_BUILD_ROOT}/images/${FLAGS_board}"
+  FILENAME="chromiumos_image.bin"
+  FLAGS_image="${IMAGES_DIR}/$(ls -t $IMAGES_DIR 2>&-| head -1)/${FILENAME}"
+fi
+
+# Turn path into an absolute path.
+FLAGS_image=$(eval readlink -f ${FLAGS_image})
+
+# Abort early if we can't find the image
+if [ ! -f $FLAGS_image ] ; then
+  echo "No image found at $FLAGS_image"
   exit 1
 fi
 
-SRC_PATH="${FLAGS_image_dir}/${FLAGS_image_name}"
-if [ -z $FLAGS_image_name ] || [ ! -f $SRC_PATH ]; then
-  echo "Error: invalid flag --image_name"
-  exit 1
-fi
+set -e
 
 # Constants
-OUTPUT_DIR=$FLAGS_image_dir
-ROOT_FS_DIR="${OUTPUT_DIR}/rootfs"
-STATEFUL_FS_DIR="${OUTPUT_DIR}/stateful_partition"
+IMAGE_DIR="$(dirname "$FLAGS_image")"
+IMAGE_NAME="$(basename "$FLAGS_image")"
+ROOT_FS_DIR="$IMAGE_DIR/rootfs"
+STATEFUL_DIR="$IMAGE_DIR/stateful_partition"
 RECOVERY_IMAGE="recovery_image.bin"
 
 mount_gpt_cleanup() {
   "${SCRIPTS_DIR}/mount_gpt_image.sh" -u -r "$1" -s "$2"
 }
 
 # Modifies an existing image for recovery use
 update_recovery_packages() {
   local image_name=$1
 
   echo "Modifying image ${image_name} for recovery use"
 
-  trap "mount_gpt_cleanup \"${ROOT_FS_DIR}\" \"${STATEFUL_FS_DIR}\"" EXIT
+  trap "mount_gpt_cleanup \"${ROOT_FS_DIR}\" \"${STATEFUL_DIR}\"" EXIT
 
-  ${SCRIPTS_DIR}/mount_gpt_image.sh --from "${OUTPUT_DIR}" \
+  ${SCRIPTS_DIR}/mount_gpt_image.sh --from "${IMAGE_DIR}" \
     --image "$( basename ${image_name} )" -r "${ROOT_FS_DIR}" \
-    -s "${STATEFUL_FS_DIR}"
+    -s "${STATEFUL_DIR}"
 
   # Mark the image as a recovery image (needed for recovery boot)
-  sudo touch "${STATEFUL_FS_DIR}/.recovery"
+  sudo touch "${STATEFUL_DIR}/.recovery"
 
   trap - EXIT
   ${SCRIPTS_DIR}/mount_gpt_image.sh -u -r "${ROOT_FS_DIR}" \
-      -s "${STATEFUL_FS_DIR}"
+      -s "${STATEFUL_DIR}"
 }
 
 # Main
 
-DST_PATH="${OUTPUT_DIR}/${RECOVERY_IMAGE}"
-echo "Making a copy of original image ${SRC_PATH}"
-cp $SRC_PATH $DST_PATH
+DST_PATH="${IMAGE_DIR}/${RECOVERY_IMAGE}"
+echo "Making a copy of original image ${FLAGS_image}"
+cp $FLAGS_image $DST_PATH
 update_recovery_packages $DST_PATH
 echo "Recovery image created at ${DST_PATH}"