689 lines
26 KiB
Python
689 lines
26 KiB
Python
# Copyright (C) 2020 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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import collections
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import logging
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import os
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import zipfile
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import common
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import edify_generator
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import verity_utils
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from check_target_files_vintf import CheckVintfIfTrebleEnabled, HasPartition
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from common import OPTIONS
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from ota_utils import UNZIP_PATTERN, FinalizeMetadata, GetPackageMetadata, PropertyFiles
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import subprocess
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logger = logging.getLogger(__name__)
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def GetBlockDifferences(target_zip, source_zip, target_info, source_info,
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device_specific):
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"""Returns a ordered dict of block differences with partition name as key."""
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def GetIncrementalBlockDifferenceForPartition(name):
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if not HasPartition(source_zip, name):
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raise RuntimeError(
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"can't generate incremental that adds {}".format(name))
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partition_src = common.GetUserImage(name, OPTIONS.source_tmp, source_zip,
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info_dict=source_info,
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allow_shared_blocks=allow_shared_blocks)
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partition_tgt = common.GetUserImage(name, OPTIONS.target_tmp, target_zip,
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info_dict=target_info,
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allow_shared_blocks=allow_shared_blocks)
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# Check the first block of the source system partition for remount R/W only
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# if the filesystem is ext4.
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partition_source_info = source_info["fstab"]["/" + name]
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check_first_block = partition_source_info.fs_type == "ext4"
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# Disable imgdiff because it relies on zlib to produce stable output
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# across different versions, which is often not the case.
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return common.BlockDifference(name, partition_tgt, partition_src,
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check_first_block,
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version=blockimgdiff_version,
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disable_imgdiff=True)
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if source_zip:
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# See notes in common.GetUserImage()
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allow_shared_blocks = (source_info.get('ext4_share_dup_blocks') == "true" or
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target_info.get('ext4_share_dup_blocks') == "true")
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blockimgdiff_version = max(
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int(i) for i in target_info.get(
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"blockimgdiff_versions", "1").split(","))
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assert blockimgdiff_version >= 3
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block_diff_dict = collections.OrderedDict()
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partition_names = ["system", "vendor", "product", "odm", "system_ext",
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"vendor_dlkm", "odm_dlkm", "system_dlkm"]
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for partition in partition_names:
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if not HasPartition(target_zip, partition):
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continue
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# Full OTA update.
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if not source_zip:
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tgt = common.GetUserImage(partition, OPTIONS.input_tmp, target_zip,
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info_dict=target_info,
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reset_file_map=True)
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block_diff_dict[partition] = common.BlockDifference(partition, tgt,
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src=None)
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# Incremental OTA update.
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else:
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block_diff_dict[partition] = GetIncrementalBlockDifferenceForPartition(
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partition)
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assert "system" in block_diff_dict
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# Get the block diffs from the device specific script. If there is a
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# duplicate block diff for a partition, ignore the diff in the generic script
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# and use the one in the device specific script instead.
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if source_zip:
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device_specific_diffs = device_specific.IncrementalOTA_GetBlockDifferences()
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function_name = "IncrementalOTA_GetBlockDifferences"
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else:
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device_specific_diffs = device_specific.FullOTA_GetBlockDifferences()
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function_name = "FullOTA_GetBlockDifferences"
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if device_specific_diffs:
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assert all(isinstance(diff, common.BlockDifference)
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for diff in device_specific_diffs), \
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"{} is not returning a list of BlockDifference objects".format(
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function_name)
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for diff in device_specific_diffs:
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if diff.partition in block_diff_dict:
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logger.warning("Duplicate block difference found. Device specific block"
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" diff for partition '%s' overrides the one in generic"
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" script.", diff.partition)
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block_diff_dict[diff.partition] = diff
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return block_diff_dict
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def WriteFullOTAPackage(input_zip, output_file):
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target_info = common.BuildInfo(OPTIONS.info_dict, OPTIONS.oem_dicts)
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# We don't know what version it will be installed on top of. We expect the API
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# just won't change very often. Similarly for fstab, it might have changed in
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# the target build.
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target_api_version = target_info["recovery_api_version"]
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script = edify_generator.EdifyGenerator(target_api_version, target_info)
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if target_info.oem_props and not OPTIONS.oem_no_mount:
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target_info.WriteMountOemScript(script)
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metadata = GetPackageMetadata(target_info)
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if not OPTIONS.no_signing:
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staging_file = common.MakeTempFile(suffix='.zip')
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else:
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staging_file = output_file
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output_zip = zipfile.ZipFile(
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staging_file, "w", compression=zipfile.ZIP_DEFLATED)
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device_specific = common.DeviceSpecificParams(
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input_zip=input_zip,
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input_version=target_api_version,
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output_zip=output_zip,
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script=script,
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input_tmp=OPTIONS.input_tmp,
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metadata=metadata,
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info_dict=OPTIONS.info_dict)
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assert HasRecoveryPatch(input_zip, info_dict=OPTIONS.info_dict)
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# Assertions (e.g. downgrade check, device properties check).
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ts = target_info.GetBuildProp("ro.build.date.utc")
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ts_text = target_info.GetBuildProp("ro.build.date")
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script.AssertOlderBuild(ts, ts_text)
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target_info.WriteDeviceAssertions(script, OPTIONS.oem_no_mount)
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device_specific.FullOTA_Assertions()
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block_diff_dict = GetBlockDifferences(target_zip=input_zip, source_zip=None,
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target_info=target_info,
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source_info=None,
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device_specific=device_specific)
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# Two-step package strategy (in chronological order, which is *not*
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# the order in which the generated script has things):
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#
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# if stage is not "2/3" or "3/3":
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# write recovery image to boot partition
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# set stage to "2/3"
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# reboot to boot partition and restart recovery
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# else if stage is "2/3":
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# write recovery image to recovery partition
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# set stage to "3/3"
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# reboot to recovery partition and restart recovery
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# else:
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# (stage must be "3/3")
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# set stage to ""
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# do normal full package installation:
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# wipe and install system, boot image, etc.
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# set up system to update recovery partition on first boot
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# complete script normally
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# (allow recovery to mark itself finished and reboot)
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recovery_img = common.GetBootableImage("recovery.img", "recovery.img",
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OPTIONS.input_tmp, "RECOVERY")
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if OPTIONS.two_step:
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if not target_info.get("multistage_support"):
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assert False, "two-step packages not supported by this build"
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fs = target_info["fstab"]["/misc"]
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assert fs.fs_type.upper() == "EMMC", \
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"two-step packages only supported on devices with EMMC /misc partitions"
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bcb_dev = {"bcb_dev": fs.device}
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common.ZipWriteStr(output_zip, "recovery.img", recovery_img.data)
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script.AppendExtra("""
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if get_stage("%(bcb_dev)s") == "2/3" then
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""" % bcb_dev)
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# Stage 2/3: Write recovery image to /recovery (currently running /boot).
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script.Comment("Stage 2/3")
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script.WriteRawImage("/recovery", "recovery.img")
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script.AppendExtra("""
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set_stage("%(bcb_dev)s", "3/3");
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reboot_now("%(bcb_dev)s", "recovery");
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else if get_stage("%(bcb_dev)s") == "3/3" then
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""" % bcb_dev)
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# Stage 3/3: Make changes.
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script.Comment("Stage 3/3")
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# Dump fingerprints
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script.Print("Target: {}".format(target_info.fingerprint))
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device_specific.FullOTA_InstallBegin()
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# All other partitions as well as the data wipe use 10% of the progress, and
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# the update of the system partition takes the remaining progress.
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system_progress = 0.9 - (len(block_diff_dict) - 1) * 0.1
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if OPTIONS.wipe_user_data:
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system_progress -= 0.1
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progress_dict = {partition: 0.1 for partition in block_diff_dict}
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progress_dict["system"] = system_progress
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if target_info.get('use_dynamic_partitions') == "true":
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# Use empty source_info_dict to indicate that all partitions / groups must
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# be re-added.
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dynamic_partitions_diff = common.DynamicPartitionsDifference(
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info_dict=OPTIONS.info_dict,
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block_diffs=block_diff_dict.values(),
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progress_dict=progress_dict)
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dynamic_partitions_diff.WriteScript(script, output_zip,
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write_verify_script=OPTIONS.verify)
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else:
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for block_diff in block_diff_dict.values():
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block_diff.WriteScript(script, output_zip,
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progress=progress_dict.get(block_diff.partition),
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write_verify_script=OPTIONS.verify)
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CheckVintfIfTrebleEnabled(OPTIONS.input_tmp, target_info)
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boot_img = common.GetBootableImage(
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"boot.img", "boot.img", OPTIONS.input_tmp, "BOOT")
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common.CheckSize(boot_img.data, "boot.img", target_info)
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common.ZipWriteStr(output_zip, "boot.img", boot_img.data)
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script.WriteRawImage("/boot", "boot.img")
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script.ShowProgress(0.1, 10)
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device_specific.FullOTA_InstallEnd()
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if OPTIONS.extra_script is not None:
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script.AppendExtra(OPTIONS.extra_script)
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script.UnmountAll()
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if OPTIONS.wipe_user_data:
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script.ShowProgress(0.1, 10)
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script.FormatPartition("/data")
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if OPTIONS.two_step:
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script.AppendExtra("""
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set_stage("%(bcb_dev)s", "");
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""" % bcb_dev)
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script.AppendExtra("else\n")
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# Stage 1/3: Nothing to verify for full OTA. Write recovery image to /boot.
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script.Comment("Stage 1/3")
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_WriteRecoveryImageToBoot(script, output_zip)
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script.AppendExtra("""
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set_stage("%(bcb_dev)s", "2/3");
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reboot_now("%(bcb_dev)s", "");
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endif;
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endif;
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""" % bcb_dev)
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script.SetProgress(1)
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script.AddToZip(input_zip, output_zip, input_path=OPTIONS.updater_binary)
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metadata.required_cache = script.required_cache
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# We haven't written the metadata entry, which will be done in
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# FinalizeMetadata.
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common.ZipClose(output_zip)
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needed_property_files = (
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NonAbOtaPropertyFiles(),
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)
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FinalizeMetadata(metadata, staging_file, output_file,
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needed_property_files, package_key=OPTIONS.package_key)
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def WriteBlockIncrementalOTAPackage(target_zip, source_zip, output_file):
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target_info = common.BuildInfo(OPTIONS.target_info_dict, OPTIONS.oem_dicts)
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source_info = common.BuildInfo(OPTIONS.source_info_dict, OPTIONS.oem_dicts)
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target_api_version = target_info["recovery_api_version"]
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source_api_version = source_info["recovery_api_version"]
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if source_api_version == 0:
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logger.warning(
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"Generating edify script for a source that can't install it.")
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script = edify_generator.EdifyGenerator(
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source_api_version, target_info, fstab=source_info["fstab"])
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if target_info.oem_props or source_info.oem_props:
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if not OPTIONS.oem_no_mount:
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source_info.WriteMountOemScript(script)
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metadata = GetPackageMetadata(target_info, source_info)
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if not OPTIONS.no_signing:
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staging_file = common.MakeTempFile(suffix='.zip')
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else:
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staging_file = output_file
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output_zip = zipfile.ZipFile(
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staging_file, "w", compression=zipfile.ZIP_DEFLATED)
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device_specific = common.DeviceSpecificParams(
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source_zip=source_zip,
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source_version=source_api_version,
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source_tmp=OPTIONS.source_tmp,
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target_zip=target_zip,
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target_version=target_api_version,
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target_tmp=OPTIONS.target_tmp,
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output_zip=output_zip,
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script=script,
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metadata=metadata,
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info_dict=source_info)
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source_boot = common.GetBootableImage(
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"/tmp/boot.img", "boot.img", OPTIONS.source_tmp, "BOOT", source_info)
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target_boot = common.GetBootableImage(
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"/tmp/boot.img", "boot.img", OPTIONS.target_tmp, "BOOT", target_info)
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updating_boot = (not OPTIONS.two_step and
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(source_boot.data != target_boot.data))
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target_recovery = common.GetBootableImage(
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"/tmp/recovery.img", "recovery.img", OPTIONS.target_tmp, "RECOVERY")
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block_diff_dict = GetBlockDifferences(target_zip=target_zip,
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source_zip=source_zip,
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target_info=target_info,
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source_info=source_info,
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device_specific=device_specific)
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CheckVintfIfTrebleEnabled(OPTIONS.target_tmp, target_info)
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# Assertions (e.g. device properties check).
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target_info.WriteDeviceAssertions(script, OPTIONS.oem_no_mount)
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device_specific.IncrementalOTA_Assertions()
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# Two-step incremental package strategy (in chronological order,
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# which is *not* the order in which the generated script has
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# things):
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#
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# if stage is not "2/3" or "3/3":
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# do verification on current system
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# write recovery image to boot partition
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# set stage to "2/3"
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# reboot to boot partition and restart recovery
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# else if stage is "2/3":
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# write recovery image to recovery partition
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# set stage to "3/3"
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# reboot to recovery partition and restart recovery
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# else:
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# (stage must be "3/3")
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# perform update:
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# patch system files, etc.
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# force full install of new boot image
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# set up system to update recovery partition on first boot
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# complete script normally
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# (allow recovery to mark itself finished and reboot)
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if OPTIONS.two_step:
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if not source_info.get("multistage_support"):
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assert False, "two-step packages not supported by this build"
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fs = source_info["fstab"]["/misc"]
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assert fs.fs_type.upper() == "EMMC", \
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"two-step packages only supported on devices with EMMC /misc partitions"
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bcb_dev = {"bcb_dev": fs.device}
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common.ZipWriteStr(output_zip, "recovery.img", target_recovery.data)
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script.AppendExtra("""
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if get_stage("%(bcb_dev)s") == "2/3" then
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""" % bcb_dev)
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# Stage 2/3: Write recovery image to /recovery (currently running /boot).
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script.Comment("Stage 2/3")
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script.AppendExtra("sleep(20);\n")
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script.WriteRawImage("/recovery", "recovery.img")
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script.AppendExtra("""
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set_stage("%(bcb_dev)s", "3/3");
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reboot_now("%(bcb_dev)s", "recovery");
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else if get_stage("%(bcb_dev)s") != "3/3" then
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""" % bcb_dev)
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# Stage 1/3: (a) Verify the current system.
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script.Comment("Stage 1/3")
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# Dump fingerprints
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script.Print("Source: {}".format(source_info.fingerprint))
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script.Print("Target: {}".format(target_info.fingerprint))
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script.Print("Verifying current system...")
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device_specific.IncrementalOTA_VerifyBegin()
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WriteFingerprintAssertion(script, target_info, source_info)
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# Check the required cache size (i.e. stashed blocks).
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required_cache_sizes = [diff.required_cache for diff in
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block_diff_dict.values()]
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if updating_boot:
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boot_type, boot_device_expr = common.GetTypeAndDeviceExpr("/boot",
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source_info)
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d = common.Difference(target_boot, source_boot, "bsdiff")
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_, _, d = d.ComputePatch()
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if d is None:
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include_full_boot = True
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common.ZipWriteStr(output_zip, "boot.img", target_boot.data)
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else:
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include_full_boot = False
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logger.info(
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"boot target: %d source: %d diff: %d", target_boot.size,
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source_boot.size, len(d))
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common.ZipWriteStr(output_zip, "boot.img.p", d)
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target_expr = 'concat("{}:",{},":{}:{}")'.format(
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boot_type, boot_device_expr, target_boot.size, target_boot.sha1)
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source_expr = 'concat("{}:",{},":{}:{}")'.format(
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boot_type, boot_device_expr, source_boot.size, source_boot.sha1)
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script.PatchPartitionExprCheck(target_expr, source_expr)
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required_cache_sizes.append(target_boot.size)
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if required_cache_sizes:
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script.CacheFreeSpaceCheck(max(required_cache_sizes))
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# Verify the existing partitions.
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for diff in block_diff_dict.values():
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diff.WriteVerifyScript(script, touched_blocks_only=True)
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device_specific.IncrementalOTA_VerifyEnd()
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if OPTIONS.two_step:
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# Stage 1/3: (b) Write recovery image to /boot.
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_WriteRecoveryImageToBoot(script, output_zip)
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script.AppendExtra("""
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set_stage("%(bcb_dev)s", "2/3");
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reboot_now("%(bcb_dev)s", "");
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else
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""" % bcb_dev)
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# Stage 3/3: Make changes.
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script.Comment("Stage 3/3")
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script.Comment("---- start making changes here ----")
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device_specific.IncrementalOTA_InstallBegin()
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progress_dict = {partition: 0.1 for partition in block_diff_dict}
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progress_dict["system"] = 1 - len(block_diff_dict) * 0.1
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if OPTIONS.source_info_dict.get("use_dynamic_partitions") == "true":
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if OPTIONS.target_info_dict.get("use_dynamic_partitions") != "true":
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raise RuntimeError(
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"can't generate incremental that disables dynamic partitions")
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dynamic_partitions_diff = common.DynamicPartitionsDifference(
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info_dict=OPTIONS.target_info_dict,
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source_info_dict=OPTIONS.source_info_dict,
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block_diffs=block_diff_dict.values(),
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progress_dict=progress_dict)
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dynamic_partitions_diff.WriteScript(
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script, output_zip, write_verify_script=OPTIONS.verify)
|
|
else:
|
|
for block_diff in block_diff_dict.values():
|
|
block_diff.WriteScript(script, output_zip,
|
|
progress=progress_dict.get(block_diff.partition),
|
|
write_verify_script=OPTIONS.verify)
|
|
|
|
if OPTIONS.two_step:
|
|
common.ZipWriteStr(output_zip, "boot.img", target_boot.data)
|
|
script.WriteRawImage("/boot", "boot.img")
|
|
logger.info("writing full boot image (forced by two-step mode)")
|
|
|
|
if not OPTIONS.two_step:
|
|
if updating_boot:
|
|
if include_full_boot:
|
|
logger.info("boot image changed; including full.")
|
|
script.Print("Installing boot image...")
|
|
script.WriteRawImage("/boot", "boot.img")
|
|
else:
|
|
# Produce the boot image by applying a patch to the current
|
|
# contents of the boot partition, and write it back to the
|
|
# partition.
|
|
logger.info("boot image changed; including patch.")
|
|
script.Print("Patching boot image...")
|
|
script.ShowProgress(0.1, 10)
|
|
target_expr = 'concat("{}:",{},":{}:{}")'.format(
|
|
boot_type, boot_device_expr, target_boot.size, target_boot.sha1)
|
|
source_expr = 'concat("{}:",{},":{}:{}")'.format(
|
|
boot_type, boot_device_expr, source_boot.size, source_boot.sha1)
|
|
script.PatchPartitionExpr(target_expr, source_expr, '"boot.img.p"')
|
|
else:
|
|
logger.info("boot image unchanged; skipping.")
|
|
|
|
# Do device-specific installation (eg, write radio image).
|
|
device_specific.IncrementalOTA_InstallEnd()
|
|
|
|
if OPTIONS.extra_script is not None:
|
|
script.AppendExtra(OPTIONS.extra_script)
|
|
|
|
if OPTIONS.wipe_user_data:
|
|
script.Print("Erasing user data...")
|
|
script.FormatPartition("/data")
|
|
|
|
if OPTIONS.two_step:
|
|
script.AppendExtra("""
|
|
set_stage("%(bcb_dev)s", "");
|
|
endif;
|
|
endif;
|
|
""" % bcb_dev)
|
|
|
|
script.SetProgress(1)
|
|
# For downgrade OTAs, we prefer to use the update-binary in the source
|
|
# build that is actually newer than the one in the target build.
|
|
if OPTIONS.downgrade:
|
|
script.AddToZip(source_zip, output_zip, input_path=OPTIONS.updater_binary)
|
|
else:
|
|
script.AddToZip(target_zip, output_zip, input_path=OPTIONS.updater_binary)
|
|
metadata.required_cache = script.required_cache
|
|
|
|
# We haven't written the metadata entry yet, which will be handled in
|
|
# FinalizeMetadata().
|
|
common.ZipClose(output_zip)
|
|
|
|
# Sign the generated zip package unless no_signing is specified.
|
|
needed_property_files = (
|
|
NonAbOtaPropertyFiles(),
|
|
)
|
|
FinalizeMetadata(metadata, staging_file, output_file,
|
|
needed_property_files, package_key=OPTIONS.package_key)
|
|
|
|
|
|
def GenerateNonAbOtaPackage(target_file, output_file, source_file=None):
|
|
"""Generates a non-A/B OTA package."""
|
|
# Check the loaded info dicts first.
|
|
if OPTIONS.info_dict.get("no_recovery") == "true":
|
|
raise common.ExternalError(
|
|
"--- target build has specified no recovery ---")
|
|
|
|
# Non-A/B OTAs rely on /cache partition to store temporary files.
|
|
cache_size = OPTIONS.info_dict.get("cache_size")
|
|
if cache_size is None:
|
|
logger.warning("--- can't determine the cache partition size ---")
|
|
OPTIONS.cache_size = cache_size
|
|
|
|
if OPTIONS.extra_script is not None:
|
|
with open(OPTIONS.extra_script) as fp:
|
|
OPTIONS.extra_script = fp.read()
|
|
|
|
if OPTIONS.extracted_input is not None:
|
|
OPTIONS.input_tmp = OPTIONS.extracted_input
|
|
else:
|
|
if not os.path.isdir(target_file):
|
|
logger.info("unzipping target target-files...")
|
|
OPTIONS.input_tmp = common.UnzipTemp(target_file, UNZIP_PATTERN)
|
|
else:
|
|
OPTIONS.input_tmp = target_file
|
|
tmpfile = common.MakeTempFile(suffix=".zip")
|
|
os.unlink(tmpfile)
|
|
common.RunAndCheckOutput(
|
|
["zip", tmpfile, "-r", ".", "-0"], cwd=target_file)
|
|
assert zipfile.is_zipfile(tmpfile)
|
|
target_file = tmpfile
|
|
|
|
OPTIONS.target_tmp = OPTIONS.input_tmp
|
|
|
|
# If the caller explicitly specified the device-specific extensions path via
|
|
# -s / --device_specific, use that. Otherwise, use META/releasetools.py if it
|
|
# is present in the target target_files. Otherwise, take the path of the file
|
|
# from 'tool_extensions' in the info dict and look for that in the local
|
|
# filesystem, relative to the current directory.
|
|
if OPTIONS.device_specific is None:
|
|
from_input = os.path.join(OPTIONS.input_tmp, "META", "releasetools.py")
|
|
if os.path.exists(from_input):
|
|
logger.info("(using device-specific extensions from target_files)")
|
|
OPTIONS.device_specific = from_input
|
|
else:
|
|
OPTIONS.device_specific = OPTIONS.info_dict.get("tool_extensions")
|
|
|
|
if OPTIONS.device_specific is not None:
|
|
OPTIONS.device_specific = os.path.abspath(OPTIONS.device_specific)
|
|
|
|
# Generate a full OTA.
|
|
if source_file is None:
|
|
with zipfile.ZipFile(target_file) as input_zip:
|
|
WriteFullOTAPackage(
|
|
input_zip,
|
|
output_file)
|
|
|
|
# Generate an incremental OTA.
|
|
else:
|
|
logger.info("unzipping source target-files...")
|
|
OPTIONS.source_tmp = common.UnzipTemp(
|
|
OPTIONS.incremental_source, UNZIP_PATTERN)
|
|
with zipfile.ZipFile(target_file) as input_zip, \
|
|
zipfile.ZipFile(source_file) as source_zip:
|
|
WriteBlockIncrementalOTAPackage(
|
|
input_zip,
|
|
source_zip,
|
|
output_file)
|
|
|
|
|
|
def WriteFingerprintAssertion(script, target_info, source_info):
|
|
source_oem_props = source_info.oem_props
|
|
target_oem_props = target_info.oem_props
|
|
|
|
if source_oem_props is None and target_oem_props is None:
|
|
script.AssertSomeFingerprint(
|
|
source_info.fingerprint, target_info.fingerprint)
|
|
elif source_oem_props is not None and target_oem_props is not None:
|
|
script.AssertSomeThumbprint(
|
|
target_info.GetBuildProp("ro.build.thumbprint"),
|
|
source_info.GetBuildProp("ro.build.thumbprint"))
|
|
elif source_oem_props is None and target_oem_props is not None:
|
|
script.AssertFingerprintOrThumbprint(
|
|
source_info.fingerprint,
|
|
target_info.GetBuildProp("ro.build.thumbprint"))
|
|
else:
|
|
script.AssertFingerprintOrThumbprint(
|
|
target_info.fingerprint,
|
|
source_info.GetBuildProp("ro.build.thumbprint"))
|
|
|
|
|
|
class NonAbOtaPropertyFiles(PropertyFiles):
|
|
"""The property-files for non-A/B OTA.
|
|
|
|
For non-A/B OTA, the property-files string contains the info for METADATA
|
|
entry, with which a system updater can be fetched the package metadata prior
|
|
to downloading the entire package.
|
|
"""
|
|
|
|
def __init__(self):
|
|
super(NonAbOtaPropertyFiles, self).__init__()
|
|
self.name = 'ota-property-files'
|
|
|
|
|
|
def _WriteRecoveryImageToBoot(script, output_zip):
|
|
"""Find and write recovery image to /boot in two-step OTA.
|
|
|
|
In two-step OTAs, we write recovery image to /boot as the first step so that
|
|
we can reboot to there and install a new recovery image to /recovery.
|
|
A special "recovery-two-step.img" will be preferred, which encodes the correct
|
|
path of "/boot". Otherwise the device may show "device is corrupt" message
|
|
when booting into /boot.
|
|
|
|
Fall back to using the regular recovery.img if the two-step recovery image
|
|
doesn't exist. Note that rebuilding the special image at this point may be
|
|
infeasible, because we don't have the desired boot signer and keys when
|
|
calling ota_from_target_files.py.
|
|
"""
|
|
|
|
recovery_two_step_img_name = "recovery-two-step.img"
|
|
recovery_two_step_img_path = os.path.join(
|
|
OPTIONS.input_tmp, "OTA", recovery_two_step_img_name)
|
|
if os.path.exists(recovery_two_step_img_path):
|
|
common.ZipWrite(
|
|
output_zip,
|
|
recovery_two_step_img_path,
|
|
arcname=recovery_two_step_img_name)
|
|
logger.info(
|
|
"two-step package: using %s in stage 1/3", recovery_two_step_img_name)
|
|
script.WriteRawImage("/boot", recovery_two_step_img_name)
|
|
else:
|
|
logger.info("two-step package: using recovery.img in stage 1/3")
|
|
# The "recovery.img" entry has been written into package earlier.
|
|
script.WriteRawImage("/boot", "recovery.img")
|
|
|
|
|
|
def HasRecoveryPatch(target_files_zip, info_dict):
|
|
board_uses_vendorimage = info_dict.get("board_uses_vendorimage") == "true"
|
|
|
|
if board_uses_vendorimage:
|
|
target_files_dir = "VENDOR"
|
|
else:
|
|
target_files_dir = "SYSTEM/vendor"
|
|
|
|
patch = "%s/recovery-from-boot.p" % target_files_dir
|
|
img = "%s/etc/recovery.img" % target_files_dir
|
|
|
|
namelist = target_files_zip.namelist()
|
|
return patch in namelist or img in namelist
|