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Unverified Commit dfad36f5 authored by Christian Oder's avatar Christian Oder Committed by Rashed Abdel-Tawab
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build: Allow building disabled vbmeta images in signing process 

If we sign builds out of tree there's no way to create a disabled vbmeta.img

Tests: Set
BOARD_AVB_ENABLE := false
BOARD_BUILD_DISABLED_VBMETAIMAGE := true
for taimen and follow https://source.android.com/devices/tech/ota/sign_builds
Result: signing will no longer fail due to missing vbmeta.img

Change-Id: If93182d0339d5fbc310373059716a56114d68d89
parent db9ace80

core/Makefile

+3 −0
Original line number Diff line number Diff line
@@ -2807,6 +2807,9 @@ ifdef BOARD_AVB_RECOVERY_KEY_PATH 
	$(hide) echo "avb_recovery_rollback_index_location=$(BOARD_AVB_RECOVERY_ROLLBACK_INDEX_LOCATION)" >> $(zip_root)/META/misc_info.txt

endif # BOARD_AVB_RECOVERY_KEY_PATH

endif # BOARD_AVB_ENABLE

ifeq ($(BOARD_BUILD_DISABLED_VBMETAIMAGE),true)

	$(hide) echo "avb_disabled_vbmeta=true" >> $(zip_root)/META/misc_info.txt

endif # BOARD_BUILD_DISABLED_VBMETAIMAGE

ifdef BOARD_BPT_INPUT_FILES

	$(hide) echo "board_bpt_enable=true" >> $(zip_root)/META/misc_info.txt

	$(hide) echo "board_bpt_make_table_args=$(BOARD_BPT_MAKE_TABLE_ARGS)" >> $(zip_root)/META/misc_info.txt

tools/releasetools/add_img_to_target_files.py

+21 −0
Original line number Diff line number Diff line
@@ -420,6 +420,23 @@ def AddVBMeta(output_zip, partitions): 
  assert p.returncode == 0, "avbtool make_vbmeta_image failed"

  img.Write()



def AddDisabledVBMeta(output_zip):

  """Creates a disabled VBMeta image and store it in output_zip.



  Args:

    output_zip: The output zip file, which needs to be already open.

  """

  img = OutputFile(output_zip, OPTIONS.input_tmp, "IMAGES", "vbmeta.img")

  if os.path.exists(img.input_name):

    print("vbmeta.img already exists; not rebuilding...")

    return img.input_name

  avbtool = os.getenv('AVBTOOL') or OPTIONS.info_dict["avb_avbtool"]

  cmd = [avbtool, "make_vbmeta_image", "--flag", "2", "--padding_size", "4096", "--output", img.name]



  p = common.Run(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)

  p.communicate()

  assert p.returncode == 0, "avbtool make_vbmeta_image failed"

  img.Write()



def AddPartitionTable(output_zip):

  """Create a partition table image and store it in output_zip."""
@@ -756,6 +773,10 @@ def AddImagesToTargetFiles(filename): 
    banner("vbmeta")

    AddVBMeta(output_zip, partitions)



  if OPTIONS.info_dict.get("avb_disabled_vbmeta") == "true":

    banner("vbmeta")

    AddDisabledVBMeta(output_zip)



  banner("radio")

  ab_partitions_txt = os.path.join(OPTIONS.input_tmp, "META",

                                   "ab_partitions.txt")

tools/releasetools/build_image.py

+1 −0
Original line number Diff line number Diff line
@@ -713,6 +713,7 @@ def ImagePropFromGlobalDict(glob_dict, mount_point): 
      "verity_fec",

      "verity_disable",

      "avb_enable",

      "avb_disabled_vbmeta",

      "avb_avbtool",

      "avb_salt",

  )