| # -*- coding: utf-8 -*- |
| # Copyright 2018 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 Chromium OS update for use by the update engine. |
| |
| If a source .bin is specified, the update is assumed to be a delta update. |
| """ |
| |
| from __future__ import print_function |
| |
| from chromite.lib import commandline |
| from chromite.lib import cros_logging as logging |
| |
| from chromite.lib.paygen import partition_lib |
| from chromite.lib.paygen import paygen_payload_lib |
| |
| |
| def ParseArguments(argv): |
| """Returns a namespace for the CLI arguments.""" |
| parser = commandline.ArgumentParser(description=__doc__) |
| parser.add_argument('--image', |
| help='The path (to local disk or Google Storage Bucket)' |
| ' of the target image to build the payload for.') |
| parser.add_argument('--src_image', |
| help='The path (to local disk or Google Storage Bucket)' |
| ' of the source image. If specified, this makes a delta' |
| ' update payload.') |
| parser.add_argument('--output', type='path', help='Output file.') |
| parser.add_argument('--private_key', type='path', |
| help='Path to private key in .pem format.') |
| parser.add_argument('--check', action='store_true', |
| help='If passed, verifies the integrity of the payload') |
| parser.add_argument('--out_metadata_hash_file', type='path', |
| help='Path to output metadata hash file.') |
| parser.add_argument('--extract', action='store_true', |
| help='If set, extract old/new kernel/rootfs to ' |
| '[old|new]_[kern|root].dat. Useful for debugging.') |
| parser.add_argument('--work_dir', type='path', |
| help='Path to a temporary directory in the chroot.') |
| |
| # Specifying any of the following will cause it to not be cleaned up on exit. |
| parser.add_argument('--kern_path', type='path', |
| help='File path for extracting the kernel partition.') |
| parser.add_argument('--root_path', type='path', |
| help='File path for extracting the rootfs partition.') |
| parser.add_argument('--root_pretruncate_path', type='path', |
| help='File path for extracting the rootfs partition, ' |
| 'pre-truncation.') |
| parser.add_argument('--src_kern_path', type='path', |
| help='File path for extracting the source kernel ' |
| 'partition.') |
| parser.add_argument('--src_root_path', type='path', |
| help='File path for extracting the source root ' |
| 'partition.') |
| |
| opts = parser.parse_args(argv) |
| opts.Freeze() |
| |
| if not opts.extract and not opts.output: |
| parser.error('You must specify an output filename with --output FILENAME') |
| |
| return opts |
| |
| |
| def main(argv): |
| opts = ParseArguments(argv) |
| |
| if opts.kern_path: |
| partition_lib.ExtractKernel(opts.image, opts.kern_path) |
| if opts.root_path: |
| partition_lib.ExtractRoot(opts.image, opts.root_path) |
| if opts.root_pretruncate_path: |
| partition_lib.ExtractRoot(opts.image, opts.root_pretruncate_path, |
| truncate=False) |
| |
| if opts.src_image: |
| if opts.src_kern_path: |
| partition_lib.ExtractKernel(opts.src_image, opts.src_kern_path) |
| if opts.src_root_path: |
| partition_lib.ExtractRoot(opts.src_image, opts.src_root_path) |
| |
| if opts.extract: |
| # If we just wanted extraction, we did it, just return. |
| logging.info('Done extracting kernel/root.') |
| return |
| |
| return paygen_payload_lib.GenerateUpdatePayload( |
| opts.image, opts.output, src_image=opts.src_image, work_dir=opts.work_dir, |
| private_key=opts.private_key, check=opts.check, |
| out_metadata_hash_file=opts.out_metadata_hash_file) |
