Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 85ac5012 authored by Yifan Hong's avatar Yifan Hong
Browse files

Add GetBootImageBuildProp. 

Add a function that extracts build.prop from boot image.

Test: TH
Bug: 162623577
Change-Id: I673ccd8e7c4846ca4c41a86349a388b2e800724e
parent 5057b955

tools/releasetools/common.py

+30 −9
Original line number Diff line number Diff line
@@ -3577,19 +3577,16 @@ class DynamicPartitionsDifference(object): 
        append('move %s %s' % (p, u.tgt_group))





def GetBootImageTimestamp(boot_img):

def GetBootImageBuildProp(boot_img):

  """

  Get timestamp from ramdisk within the boot image

  Get build.prop from ramdisk within the boot image



  Args:

    boot_img: the boot image file. Ramdisk must be compressed with lz4 format.



  Return:

    An integer that corresponds to the timestamp of the boot image, or None

    if file has unknown format. Raise exception if an unexpected error has

    occurred.

    An extracted file that stores properties in the boot image.

  """



  tmp_dir = MakeTempDir('boot_', suffix='.img')

  try:

    RunAndCheckOutput(['unpack_bootimg', '--boot_img', boot_img, '--out', tmp_dir])
@@ -3614,10 +3611,34 @@ def GetBootImageTimestamp(boot_img): 
        break

      logger.warning('Unable to get boot image timestamp: no %s in ramdisk', search_path)



    return prop_file



  except ExternalError as e:

    logger.warning('Unable to get boot image build props: %s', e)

    return None





def GetBootImageTimestamp(boot_img):

  """

  Get timestamp from ramdisk within the boot image



  Args:

    boot_img: the boot image file. Ramdisk must be compressed with lz4 format.



  Return:

    An integer that corresponds to the timestamp of the boot image, or None

    if file has unknown format. Raise exception if an unexpected error has

    occurred.

  """

  prop_file = GetBootImageBuildProp(boot_img)

  if not prop_file:

    return None



  props = PartitionBuildProps.FromBuildPropFile('boot', prop_file)

  if props is None:

    return None



  try:

    timestamp = props.GetProp('ro.bootimage.build.date.utc')

    if timestamp:

      return int(timestamp)