commit 38ca0be399df26514f0412c7b7fca8050d36e9e2
author Tao Bao <tbao@google.com> Tue Jun 14 17:48:11 2016 -0700
committer Tao Bao <tbao@google.com> Wed Jun 15 17:07:03 2016 -0700
tree 9d37c27c28c41bfd0aaf89d6eb5298b98eb0f051
parent f80e55b82126335362c25655a44140c8640c5a24

Support wiping userdata for A/B OTA packages.

update_engine now accepts POWERWASH=1 to schedule a factory reset in
the post-install phase. Hook up with the --wipe_user_data flag in the
OTA script.

Bug: 28700985
Change-Id: Ie73876a61db90d124d2af588d674757376e9aabc

tools/releasetools/ota_from_target_files.py

diff --git a/tools/releasetools/ota_from_target_files.py b/tools/releasetools/ota_from_target_files.py
index b69ddac..bb3a009 100755
--- a/tools/releasetools/ota_from_target_files.py
+++ b/tools/releasetools/ota_from_target_files.py
@@ -1276,6 +1276,11 @@
   p1.wait()
   assert p1.returncode == 0, "brillo_update_payload properties failed"
 
+  if OPTIONS.wipe_user_data:
+    with open(properties_file, "a") as f:
+      f.write("POWERWASH=1\n")
+    metadata["ota-wipe"] = "yes"
+
   # Add the signed payload file and properties into the zip.
   common.ZipWrite(output_zip, properties_file, arcname="payload_properties.txt")
   common.ZipWrite(output_zip, signed_payload_file, arcname="payload.bin",