A/B update: Replace the zip FileHeader mechanism for update package
When the update package gets larger than 2 GiB, payload.bin offset
mentioned in metadata file for ota-streaming-property-files gets
shifted (CrAU of payload.bin) because ZipInfo FileHeader() returns
incorrect value. To solve the issue, offset is re-calculated from
fixed bytes of central directory file header, filename length and
extra length.
This patch is to sync with update_device.py script.
Test: manually create an A/B update package and run it using
update_device.py
Bug: 111198589
Change-Id: I9bf5a5ca24938cad3206d04af529f70d45e992c0
diff --git a/tools/releasetools/ota_from_target_files.py b/tools/releasetools/ota_from_target_files.py
index 47e61da..9ad3f6b 100755
--- a/tools/releasetools/ota_from_target_files.py
+++ b/tools/releasetools/ota_from_target_files.py
@@ -1096,7 +1096,9 @@
def ComputeEntryOffsetSize(name):
"""Computes the zip entry offset and size."""
info = zip_file.getinfo(name)
- offset = info.header_offset + len(info.FileHeader())
+ offset = info.header_offset
+ offset += zipfile.sizeFileHeader
+ offset += len(info.extra) + len(info.filename)
size = info.file_size
return '%s:%d:%d' % (os.path.basename(name), offset, size)
@@ -1220,7 +1222,9 @@
payload, till the end of 'medatada_signature_message'.
"""
payload_info = input_zip.getinfo('payload.bin')
- payload_offset = payload_info.header_offset + len(payload_info.FileHeader())
+ payload_offset = payload_info.header_offset
+ payload_offset += zipfile.sizeFileHeader
+ payload_offset += len(payload_info.extra) + len(payload_info.filename)
payload_size = payload_info.file_size
with input_zip.open('payload.bin', 'r') as payload_fp: