230 lines
6.9 KiB
Python
Executable file
230 lines
6.9 KiB
Python
Executable file
#!/usr/bin/env python
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#
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# Copyright (C) 2018 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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Usage: build_super_image input_file output_dir_or_file
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input_file: one of the following:
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- directory containing extracted target files. It will load info from
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META/misc_info.txt and build full super image / split images using source
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images from IMAGES/.
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- target files package. Same as above, but extracts the archive before
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building super image.
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- a dictionary file containing input arguments to build. Check
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`dump-super-image-info' for details.
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In addition:
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- If source images should be included in the output image (for super.img
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and super split images), a list of "*_image" should be paths of each
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source images.
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output_dir_or_file:
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If a single super image is built (for super_empty.img, or super.img for
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launch devices), this argument is the output file.
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If a collection of split images are built (for retrofit devices), this
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argument is the output directory.
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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.path
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import shlex
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import sys
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import zipfile
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import common
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import sparse_img
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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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UNZIP_PATTERN = ["IMAGES/*", "META/*"]
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def GetPartitionSizeFromImage(img):
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try:
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simg = sparse_img.SparseImage(img)
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return simg.blocksize * simg.total_blocks
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except ValueError:
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return os.path.getsize(img)
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def GetArgumentsForImage(partition, group, image=None):
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image_size = GetPartitionSizeFromImage(image) if image else 0
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cmd = ["--partition",
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"{}:readonly:{}:{}".format(partition, image_size, group)]
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if image:
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cmd += ["--image", "{}={}".format(partition, image)]
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return cmd
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def BuildSuperImageFromDict(info_dict, output):
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cmd = [info_dict["lpmake"],
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"--metadata-size", "65536",
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"--super-name", info_dict["super_metadata_device"]]
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ab_update = info_dict.get("ab_update") == "true"
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retrofit = info_dict.get("dynamic_partition_retrofit") == "true"
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block_devices = shlex.split(info_dict.get("super_block_devices", "").strip())
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groups = shlex.split(info_dict.get("super_partition_groups", "").strip())
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if ab_update and retrofit:
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cmd += ["--metadata-slots", "2"]
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elif ab_update:
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cmd += ["--metadata-slots", "3"]
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else:
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cmd += ["--metadata-slots", "2"]
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if ab_update and retrofit:
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cmd.append("--auto-slot-suffixing")
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for device in block_devices:
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size = info_dict["super_{}_device_size".format(device)]
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cmd += ["--device", "{}:{}".format(device, size)]
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append_suffix = ab_update and not retrofit
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has_image = False
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for group in groups:
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group_size = info_dict["super_{}_group_size".format(group)]
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if append_suffix:
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cmd += ["--group", "{}_a:{}".format(group, group_size),
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"--group", "{}_b:{}".format(group, group_size)]
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else:
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cmd += ["--group", "{}:{}".format(group, group_size)]
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partition_list = shlex.split(
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info_dict["super_{}_partition_list".format(group)].strip())
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for partition in partition_list:
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image = info_dict.get("{}_image".format(partition))
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if image:
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has_image = True
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if not append_suffix:
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cmd += GetArgumentsForImage(partition, group, image)
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continue
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# For A/B devices, super partition always contains sub-partitions in
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# the _a slot, because this image should only be used for
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# bootstrapping / initializing the device. When flashing the image,
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# bootloader fastboot should always mark _a slot as bootable.
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cmd += GetArgumentsForImage(partition + "_a", group + "_a", image)
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other_image = None
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if partition == "system" and "system_other_image" in info_dict:
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other_image = info_dict["system_other_image"]
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has_image = True
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cmd += GetArgumentsForImage(partition + "_b", group + "_b", other_image)
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if has_image:
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cmd.append("--sparse")
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cmd += ["--output", output]
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common.RunAndCheckOutput(cmd)
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if retrofit and has_image:
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logger.info("Done writing images to directory %s", output)
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else:
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logger.info("Done writing image %s", output)
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return True
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def BuildSuperImageFromExtractedTargetFiles(inp, out):
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info_dict = common.LoadInfoDict(inp)
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partition_list = shlex.split(
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info_dict.get("dynamic_partition_list", "").strip())
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if "system" in partition_list:
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image_path = os.path.join(inp, "IMAGES", "system_other.img")
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if os.path.isfile(image_path):
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info_dict["system_other_image"] = image_path
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missing_images = []
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for partition in partition_list:
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image_path = os.path.join(inp, "IMAGES", "{}.img".format(partition))
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if not os.path.isfile(image_path):
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missing_images.append(image_path)
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else:
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info_dict["{}_image".format(partition)] = image_path
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if missing_images:
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logger.warning("Skip building super image because the following "
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"images are missing from target files:\n%s",
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"\n".join(missing_images))
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return False
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return BuildSuperImageFromDict(info_dict, out)
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def BuildSuperImageFromTargetFiles(inp, out):
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input_tmp = common.UnzipTemp(inp, UNZIP_PATTERN)
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return BuildSuperImageFromExtractedTargetFiles(input_tmp, out)
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def BuildSuperImage(inp, out):
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if isinstance(inp, dict):
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logger.info("Building super image from info dict...")
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return BuildSuperImageFromDict(inp, out)
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if isinstance(inp, str):
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if os.path.isdir(inp):
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logger.info("Building super image from extracted target files...")
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return BuildSuperImageFromExtractedTargetFiles(inp, out)
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if zipfile.is_zipfile(inp):
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logger.info("Building super image from target files...")
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return BuildSuperImageFromTargetFiles(inp, out)
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if os.path.isfile(inp):
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with open(inp) as f:
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lines = f.read()
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logger.info("Building super image from info dict...")
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return BuildSuperImageFromDict(common.LoadDictionaryFromLines(lines.split("\n")), out)
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raise ValueError("{} is not a dictionary or a valid path".format(inp))
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def main(argv):
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args = common.ParseOptions(argv, __doc__)
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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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BuildSuperImage(args[0], args[1])
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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:
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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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