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Commit b14eaa57 authored by Tao Bao's avatar Tao Bao Committed by android-build-merger
Browse files

Build repeatable system images with mke2fs. 

am: 87153c64

Change-Id: Id4eb7ceadab99d544be38194a9f88ef40ce23f2d
parents 6f7a1cd2 87153c64

tools/releasetools/add_img_to_target_files.py

+14 −0
Original line number Diff line number Diff line
@@ -58,6 +58,7 @@ import shlex 
import shutil

import subprocess

import tempfile

import uuid

import zipfile



import build_image
@@ -257,6 +258,19 @@ def CreateImage(input_dir, info_dict, what, output_file, block_list=None): 
  if block_list:

    image_props["block_list"] = block_list.name



  # Use repeatable ext4 FS UUID and hash_seed UUID (based on partition name and

  # build fingerprint).

  uuid_seed = what + "-"

  if "build.prop" in info_dict:

    build_prop = info_dict["build.prop"]

    if "ro.build.fingerprint" in build_prop:

      uuid_seed += build_prop["ro.build.fingerprint"]

    elif "ro.build.thumbprint" in build_prop:

      uuid_seed += build_prop["ro.build.thumbprint"]

  image_props["uuid"] = str(uuid.uuid5(uuid.NAMESPACE_URL, uuid_seed))

  hash_seed = "hash_seed-" + uuid_seed

  image_props["hash_seed"] = str(uuid.uuid5(uuid.NAMESPACE_URL, hash_seed))



  succ = build_image.BuildImage(os.path.join(temp_dir, what),

                                image_props, output_file.name)

  assert succ, "build " + what + ".img image failed"

tools/releasetools/build_image.py

+6 −0
Original line number Diff line number Diff line
@@ -475,6 +475,12 @@ def BuildImage(in_dir, prop_dict, out_file, target_out=None): 
      build_command.extend(["-e", prop_dict["flash_erase_block_size"]])

    if "flash_logical_block_size" in prop_dict:

      build_command.extend(["-o", prop_dict["flash_logical_block_size"]])

    # Specify UUID and hash_seed if using mke2fs.

    if prop_dict["ext_mkuserimg"] == "mkuserimg_mke2fs.sh":

      if "uuid" in prop_dict:

        build_command.extend(["-U", prop_dict["uuid"]])

      if "hash_seed" in prop_dict:

        build_command.extend(["-S", prop_dict["hash_seed"]])

    if "selinux_fc" in prop_dict:

      build_command.append(prop_dict["selinux_fc"])

  elif fs_type.startswith("squash"):