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259 lines
8.1 KiB
259 lines
8.1 KiB
#!/usr/bin/env python
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#
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# Copyright (C) 2008 The Android Open Source Project
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""
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Given an input target-files, produces an image zipfile suitable for use with
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'fastboot update'.
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Usage: img_from_target_files [flags] input_target_files output_image_zip
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input_target_files: Path to the input target_files zip.
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Flags:
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-z (--bootable_zip)
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Include only the bootable images (eg 'boot' and 'recovery') in
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the output.
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--additional <filespec>
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Include an additional entry into the generated zip file. The filespec is
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in a format that's accepted by zip2zip (e.g.
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'OTA/android-info.txt:android-info.txt', to copy `OTA/android-info.txt`
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from input_file into output_file as `android-info.txt`. Refer to the
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`filespec` arg in zip2zip's help message). The option can be repeated to
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include multiple entries.
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"""
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from __future__ import print_function
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import logging
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import os
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import sys
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import zipfile
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import common
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from build_super_image import BuildSuperImage
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if sys.hexversion < 0x02070000:
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print('Python 2.7 or newer is required.', file=sys.stderr)
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sys.exit(1)
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logger = logging.getLogger(__name__)
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OPTIONS = common.OPTIONS
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OPTIONS.additional_entries = []
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OPTIONS.bootable_only = False
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OPTIONS.put_super = None
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OPTIONS.put_bootloader = None
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OPTIONS.dynamic_partition_list = None
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OPTIONS.super_device_list = None
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OPTIONS.retrofit_dap = None
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OPTIONS.build_super = None
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OPTIONS.sparse_userimages = None
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def LoadOptions(input_file):
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"""Loads information from input_file to OPTIONS.
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Args:
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input_file: Path to the input target_files zip file.
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"""
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with zipfile.ZipFile(input_file) as input_zip:
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info = OPTIONS.info_dict = common.LoadInfoDict(input_zip)
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OPTIONS.put_super = info.get('super_image_in_update_package') == 'true'
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OPTIONS.put_bootloader = info.get('bootloader_in_update_package') == 'true'
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OPTIONS.dynamic_partition_list = info.get('dynamic_partition_list',
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'').strip().split()
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OPTIONS.super_device_list = info.get('super_block_devices',
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'').strip().split()
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OPTIONS.retrofit_dap = info.get('dynamic_partition_retrofit') == 'true'
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OPTIONS.build_super = info.get('build_super_partition') == 'true'
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OPTIONS.sparse_userimages = bool(info.get('extfs_sparse_flag'))
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def CopyZipEntries(input_file, output_file, entries):
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"""Copies ZIP entries between input and output files.
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Args:
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input_file: Path to the input target_files zip.
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output_file: Output filename.
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entries: A list of entries to copy, in a format that's accepted by zip2zip
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(e.g. 'OTA/android-info.txt:android-info.txt', which copies
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`OTA/android-info.txt` from input_file into output_file as
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`android-info.txt`. Refer to the `filespec` arg in zip2zip's help
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message).
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"""
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logger.info('Writing %d entries to archive...', len(entries))
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cmd = ['zip2zip', '-i', input_file, '-o', output_file]
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cmd.extend(entries)
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common.RunAndCheckOutput(cmd)
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def EntriesForUserImages(input_file):
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"""Returns the user images entries to be copied.
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Args:
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input_file: Path to the input target_files zip file.
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"""
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dynamic_images = [p + '.img' for p in OPTIONS.dynamic_partition_list]
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# Filter out system_other for launch DAP devices because it is in super image.
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if not OPTIONS.retrofit_dap and 'system' in OPTIONS.dynamic_partition_list:
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dynamic_images.append('system_other.img')
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entries = [
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'OTA/android-info.txt:android-info.txt',
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]
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with zipfile.ZipFile(input_file) as input_zip:
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namelist = input_zip.namelist()
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for image_path in [name for name in namelist if name.startswith('IMAGES/')]:
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image = os.path.basename(image_path)
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if OPTIONS.bootable_only and image not in('boot.img', 'recovery.img', 'bootloader'):
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continue
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if not image.endswith('.img') and image != 'bootloader':
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continue
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if image == 'bootloader' and not OPTIONS.put_bootloader:
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continue
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# Filter out super_empty and the images that are already in super partition.
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if OPTIONS.put_super:
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if image == 'super_empty.img':
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continue
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if image in dynamic_images:
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continue
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entries.append('{}:{}'.format(image_path, image))
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return entries
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def EntriesForSplitSuperImages(input_file):
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"""Returns the entries for split super images.
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This is only done for retrofit dynamic partition devices.
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Args:
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input_file: Path to the input target_files zip file.
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"""
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with zipfile.ZipFile(input_file) as input_zip:
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namelist = input_zip.namelist()
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entries = []
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for device in OPTIONS.super_device_list:
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image = 'OTA/super_{}.img'.format(device)
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assert image in namelist, 'Failed to find {}'.format(image)
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entries.append('{}:{}'.format(image, os.path.basename(image)))
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return entries
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def RebuildAndWriteSuperImages(input_file, output_file):
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"""Builds and writes super images to the output file."""
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logger.info('Building super image...')
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# We need files under IMAGES/, OTA/, META/ for img_from_target_files.py.
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# However, common.LoadInfoDict() may read additional files under BOOT/,
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# RECOVERY/ and ROOT/. So unzip everything from the target_files.zip.
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input_tmp = common.UnzipTemp(input_file)
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super_file = common.MakeTempFile('super_', '.img')
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BuildSuperImage(input_tmp, super_file)
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logger.info('Writing super.img to archive...')
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with zipfile.ZipFile(
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output_file, 'a', compression=zipfile.ZIP_DEFLATED,
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allowZip64=not OPTIONS.sparse_userimages) as output_zip:
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common.ZipWrite(output_zip, super_file, 'super.img')
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def ImgFromTargetFiles(input_file, output_file):
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"""Creates an image archive from the input target_files zip.
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Args:
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input_file: Path to the input target_files zip.
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output_file: Output filename.
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Raises:
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ValueError: On invalid input.
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"""
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if not os.path.exists(input_file):
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raise ValueError('%s is not exist' % input_file)
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if not zipfile.is_zipfile(input_file):
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raise ValueError('%s is not a valid zipfile' % input_file)
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logger.info('Building image zip from target files zip.')
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LoadOptions(input_file)
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# Entries to be copied into the output file.
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entries = EntriesForUserImages(input_file)
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# Only for devices that retrofit dynamic partitions there're split super
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# images available in the target_files.zip.
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rebuild_super = False
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if OPTIONS.build_super and OPTIONS.put_super:
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if OPTIONS.retrofit_dap:
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entries += EntriesForSplitSuperImages(input_file)
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else:
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rebuild_super = True
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# Any additional entries provided by caller.
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entries += OPTIONS.additional_entries
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CopyZipEntries(input_file, output_file, entries)
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if rebuild_super:
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RebuildAndWriteSuperImages(input_file, output_file)
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def main(argv):
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def option_handler(o, a):
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if o in ('-z', '--bootable_zip'):
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OPTIONS.bootable_only = True
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elif o == '--additional':
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OPTIONS.additional_entries.append(a)
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else:
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return False
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return True
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args = common.ParseOptions(argv, __doc__,
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extra_opts='z',
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extra_long_opts=[
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'additional=',
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'bootable_zip',
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],
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extra_option_handler=option_handler)
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if len(args) != 2:
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common.Usage(__doc__)
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sys.exit(1)
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common.InitLogging()
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ImgFromTargetFiles(args[0], args[1])
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logger.info('done.')
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if __name__ == '__main__':
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try:
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common.CloseInheritedPipes()
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main(sys.argv[1:])
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except common.ExternalError as e:
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logger.exception('\n ERROR:\n')
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sys.exit(1)
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finally:
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common.Cleanup()
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