update_engine: Process Omaha response for rollback images
Omaha returns whether the image returned is a rollback in the
_rollback="true" argument. If this is set, the client has to check
whether it's OK to apply the rollback image (policy is specifically
requesting a rollback and verified boot will accept the image based
on its kernel and firmware key versions).
In addition to this, the device has to do a safe powerwash if the
image is a rollback. (We're not supporting rollbacks with partial
or no powerwash yet.)
We're also setting the rollback_happened preference to avoid force
updates happening before the policy is available again.
Chromium CL adding the error code: http://crrev.com/c/1047866
BUG=chromium:840432
TEST='cros_run_unit_tests --board=caroline --packages update_engine'
Change-Id: I1436ca96211b2a8523e78bf83602ef8b6b525570
Reviewed-on: https://chromium-review.googlesource.com/1047610
Commit-Ready: Marton Hunyady <hunyadym@chromium.org>
Tested-by: Marton Hunyady <hunyadym@chromium.org>
Reviewed-by: Amin Hassani <ahassani@chromium.org>
diff --git a/update_attempter_unittest.cc b/update_attempter_unittest.cc
index 54a3f2b..3936404 100644
--- a/update_attempter_unittest.cc
+++ b/update_attempter_unittest.cc
@@ -1243,4 +1243,28 @@
loop_.Run();
}
+TEST_F(UpdateAttempterTest, SetRollbackHappenedRollback) {
+ OmahaResponseHandlerAction* response_action =
+ new OmahaResponseHandlerAction(&fake_system_state_);
+ response_action->install_plan_.is_rollback = true;
+ attempter_.response_handler_action_.reset(response_action);
+
+ EXPECT_CALL(*fake_system_state_.mock_payload_state(),
+ SetRollbackHappened(true))
+ .Times(1);
+ attempter_.ProcessingDone(nullptr, ErrorCode::kSuccess);
+}
+
+TEST_F(UpdateAttempterTest, SetRollbackHappenedNotRollback) {
+ OmahaResponseHandlerAction* response_action =
+ new OmahaResponseHandlerAction(&fake_system_state_);
+ response_action->install_plan_.is_rollback = false;
+ attempter_.response_handler_action_.reset(response_action);
+
+ EXPECT_CALL(*fake_system_state_.mock_payload_state(),
+ SetRollbackHappened(true))
+ .Times(0);
+ attempter_.ProcessingDone(nullptr, ErrorCode::kSuccess);
+}
+
} // namespace chromeos_update_engine