update_engine: Add ChannelDowngradeBehavior
Add the ChannelDowngradeBehaviorPolicy to update_engine.
It will be used to decide whether to rollback and powerwash or wait
until the target channel catches up on a channel downgrade
(e.g. beta to stable).
BUG=chromium:1122531
TEST=FEATURES=test emerge-amd64-generic update_engine
TEST=manual test on device
Change-Id: Iad075e1019084fafec8509c23f2bd55e9755b39e
Reviewed-on: https://chromium-review.googlesource.com/c/aosp/platform/system/update_engine/+/2379690
Tested-by: Miriam Polzer <mpolzer@google.com>
Commit-Queue: Amin Hassani <ahassani@chromium.org>
Reviewed-by: Amin Hassani <ahassani@chromium.org>
diff --git a/update_manager/device_policy_provider.h b/update_manager/device_policy_provider.h
index d63c416..f177e71 100644
--- a/update_manager/device_policy_provider.h
+++ b/update_manager/device_policy_provider.h
@@ -87,6 +87,11 @@
virtual Variable<WeeklyTimeIntervalVector>*
var_disallowed_time_intervals() = 0;
+ // Variable that determins whether we should powerwash and rollback on channel
+ // downgrade for enrolled devices.
+ virtual Variable<ChannelDowngradeBehavior>*
+ var_channel_downgrade_behavior() = 0;
+
protected:
DevicePolicyProvider() {}