Merge "check entire recovery partition on startup"

  boot_type, boot_device = common.GetTypeAndDevice("/boot", OPTIONS.info_dict)

  recovery_type, recovery_device = common.GetTypeAndDevice("/recovery", OPTIONS.info_dict)

  # Images with different content will have a different first page, so

  # we check to see if this recovery has already been installed by

  # testing just the first 2k.

  HEADER_SIZE = 2048

  header_sha1 = common.sha1(recovery_img.data[:HEADER_SIZE]).hexdigest()

  sh = """#!/system/bin/sh

if ! applypatch -c %(recovery_type)s:%(recovery_device)s:%(header_size)d:%(header_sha1)s; then

if ! applypatch -c %(recovery_type)s:%(recovery_device)s:%(recovery_size)d:%(recovery_sha1)s; then

  log -t recovery "Installing new recovery image"

  applypatch %(boot_type)s:%(boot_device)s:%(boot_size)d:%(boot_sha1)s %(recovery_type)s:%(recovery_device)s %(recovery_sha1)s %(recovery_size)d %(boot_sha1)s:/system/recovery-from-boot.p

else

fi

""" % { 'boot_size': boot_img.size,

        'boot_sha1': boot_img.sha1,

        'header_size': HEADER_SIZE,

        'header_sha1': header_sha1,

        'recovery_size': recovery_img.size,

        'recovery_sha1': recovery_img.sha1,

        'boot_type': boot_type,