commit 126d13ee33880555bc55dd3b49fa6af53b3b0ed4
author Yifan Hong <elsk@google.com> Mon Sep 21 19:50:06 2020 -0700
committer Yifan Hong <elsk@google.com> Wed Sep 23 23:25:33 2020 +0000
tree a2f7a37f940da610492e43b41df6b677dfd59fe6
parent 5e6dfe3933a7ea6e934adfa0319d52a8919a29e8

Only prevent boot image downgrade if sysprop set.

Only return timestamp error if ro.build.ab_update.gki.prevent_downgrade_version is set.
Otherwise, log warning message and continue the update.

This allows devices that does not support GKI updates to install OTA packages where
the boot image has a lower version than the existing, which is supported before.

Bug: 162623577
Test: apply OTA on devices with and without sysprop set
Change-Id: Ie98fb49ffaae1aa60fc94766f53a6fbbae519a5b

Android.bp

diff --git a/Android.bp b/Android.bp
index 6585ea2..193928b 100644
--- a/Android.bp
+++ b/Android.bp
@@ -260,6 +260,7 @@
     ],
 
     static_libs: [
+        "gkiprops",
         "libkver",
         "libpayload_consumer",
         "libupdate_engine_boot_control",
@@ -383,6 +384,7 @@
         // We add the static versions of the shared libraries that are not installed to
         // recovery image due to size concerns. Need to include all the static library
         // dependencies of these static libraries.
+        "gkiprops",
         "libevent",
         "libmodpb64",
         "libgtest_prod",