commit 4bb4920a5772d006f9316bdbfd6e7dd771dfd98e
author Kelvin Zhang <zhangkelvin@google.com> Thu Jul 08 21:39:05 2021 -0400
committer Kelvin Zhang <zhangkelvin@google.com> Mon Aug 16 10:00:54 2021 -0700
tree 0bb705f99774b138abe94f158674fc0d0fa2abbb
parent 1c0fa69215d2bc486e383ce9b222b444816354bf

Add XorExtentWriter

This class is built on top of BlockExtentWriter(block aligned writer)
and ExtentMap. It will look at the extent map, convert blocks in the
extent map to XOR type, and convert everythign else to COW_REPLACE.

Test: th
Bug: 177104308
Change-Id: I6f9df83ed09f1c5a6aae9f266412132b002acd29

Android.bp

diff --git a/Android.bp b/Android.bp
index b3fbccf..83be871 100644
--- a/Android.bp
+++ b/Android.bp
@@ -242,6 +242,7 @@
         "payload_consumer/partition_writer.cc",
         "payload_consumer/partition_writer_factory_android.cc",
         "payload_consumer/vabc_partition_writer.cc",
+        "payload_consumer/xor_extent_writer.cc",
         "payload_consumer/block_extent_writer.cc",
         "payload_consumer/snapshot_extent_writer.cc",
         "payload_consumer/postinstall_runner_action.cc",
@@ -806,6 +807,7 @@
         "payload_consumer/extent_writer_unittest.cc",
         "payload_consumer/extent_map_unittest.cc",
         "payload_consumer/snapshot_extent_writer_unittest.cc",
+        "payload_consumer/xor_extent_writer_unittest.cc",
         "payload_consumer/fake_file_descriptor.cc",
         "payload_consumer/file_descriptor_utils_unittest.cc",
         "payload_consumer/file_writer_unittest.cc",