Remove vendor & product in secondary payload
We used to carry the full OTA for vendor and product partitions when
generating the secondary payload. Since they are not actually used, we
can remove them to reduce the size of factory OTA packages. For example,
the size for a sargo package reduces from 454M to 283M after the change.
Bug: 140771390
Test: generate and apply a second payload on Pixel
Change-Id: I091dc07db8c345b182d9f5dd8d48f5c209245641
diff --git a/tools/releasetools/ota_from_target_files.py b/tools/releasetools/ota_from_target_files.py
index 67cec1c..dc75ce2 100755
--- a/tools/releasetools/ota_from_target_files.py
+++ b/tools/releasetools/ota_from_target_files.py
@@ -250,6 +250,7 @@
TARGET_DIFFING_UNZIP_PATTERN = ['BOOT', 'RECOVERY', 'SYSTEM/*', 'VENDOR/*',
'PRODUCT/*', 'SYSTEM_EXT/*', 'ODM/*']
RETROFIT_DAP_UNZIP_PATTERN = ['OTA/super_*.img', AB_PARTITIONS]
+SECONDARY_IMAGES_SKIP_PARTITIONS = ['odm', 'product', 'system_ext', 'vendor']
class BuildInfo(object):
@@ -1792,6 +1793,43 @@
Returns:
The filename of the target-files.zip for generating secondary payload.
"""
+
+ def GetInfoForSecondaryImages(info_file):
+ """Updates info file for secondary payload generation.
+
+ Scan each line in the info file, and remove the unwanted partitions from
+ the dynamic partition list in the related properties. e.g.
+ "super_google_dynamic_partitions_partition_list=system vendor product"
+ will become "super_google_dynamic_partitions_partition_list=system".
+
+ Args:
+ info_file: The input info file. e.g. misc_info.txt.
+
+ Returns:
+ A string of the updated info content.
+ """
+
+ output_list = []
+ with open(info_file) as f:
+ lines = f.read().splitlines()
+
+ # The suffix in partition_list variables that follows the name of the
+ # partition group.
+ LIST_SUFFIX = 'partition_list'
+ for line in lines:
+ if line.startswith('#') or '=' not in line:
+ output_list.append(line)
+ continue
+ key, value = line.strip().split('=', 1)
+ if key == 'dynamic_partition_list' or key.endswith(LIST_SUFFIX):
+ partitions = value.split()
+ partitions = [partition for partition in partitions if partition
+ not in SECONDARY_IMAGES_SKIP_PARTITIONS]
+ output_list.append('{}={}'.format(key, ' '.join(partitions)))
+ else:
+ output_list.append(line)
+ return '\n'.join(output_list)
+
target_file = common.MakeTempFile(prefix="targetfiles-", suffix=".zip")
target_zip = zipfile.ZipFile(target_file, 'w', allowZip64=True)
@@ -1808,12 +1846,32 @@
elif info.filename in ('IMAGES/system.img',
'IMAGES/system.map'):
pass
+ # Images like vendor and product are not needed in the secondary payload.
+ elif info.filename in ['IMAGES/{}.img'.format(partition) for partition in
+ SECONDARY_IMAGES_SKIP_PARTITIONS]:
+ pass
# Skip copying the postinstall config if requested.
elif skip_postinstall and info.filename == POSTINSTALL_CONFIG:
pass
- elif info.filename.startswith(('META/', 'IMAGES/', 'RADIO/')):
+ elif info.filename.startswith('META/'):
+ # Remove the unnecessary partitions for secondary images from the
+ # ab_partitions file.
+ if info.filename == AB_PARTITIONS:
+ with open(unzipped_file) as f:
+ partition_list = f.read().splitlines()
+ partition_list = [partition for partition in partition_list if partition
+ and partition not in SECONDARY_IMAGES_SKIP_PARTITIONS]
+ common.ZipWriteStr(target_zip, info.filename, '\n'.join(partition_list))
+ # Remove the unnecessary partitions from the dynamic partitions list.
+ elif (info.filename == 'META/misc_info.txt' or
+ info.filename == DYNAMIC_PARTITION_INFO):
+ modified_info = GetInfoForSecondaryImages(unzipped_file)
+ common.ZipWriteStr(target_zip, info.filename, modified_info)
+ else:
+ common.ZipWrite(target_zip, unzipped_file, arcname=info.filename)
+ elif info.filename.startswith(('IMAGES/', 'RADIO/')):
common.ZipWrite(target_zip, unzipped_file, arcname=info.filename)
common.ZipClose(target_zip)