Cancel the current download if user chooses a different channel.
In my earlier CL, to keep the implementation simple, we disallowed changing
a channel until the previous change completed in its entirety. Given that
the UI is not going to be updated for M27, such a restriction turned out
to be very confusing when playing around with channel changing. So, we
decided to implement a simple form of canceling the download if the
user selected a different channel while we're downloading the bits. This
implementation can easily be extended to support a general form of cancel
in the future, if required.
This CL also adds validation of libchromeos API calls when interpreting
the policy values. It also cleans up some bogus error messages that were
logged earlier when we abort a download.
BUG=chromium:222617
TEST=All scenarios pass on ZGB. Unit Tests pass.
Change-Id: I7cd691fe461d9ce47314299f6e2598944650ee33
Reviewed-on: https://gerrit.chromium.org/gerrit/46095
Commit-Queue: Jay Srinivasan <jaysri@chromium.org>
Reviewed-by: Jay Srinivasan <jaysri@chromium.org>
Tested-by: Jay Srinivasan <jaysri@chromium.org>
diff --git a/constants.h b/constants.h
new file mode 100644
index 0000000..d6fd736
--- /dev/null
+++ b/constants.h
@@ -0,0 +1,19 @@
+// Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROMEOS_PLATFORM_UPDATE_ENGINE_CONSTANTS_H
+#define CHROMEOS_PLATFORM_UPDATE_ENGINE_CONSTANTS_H
+
+namespace chromeos_update_engine {
+
+// The name of the marker file used to trigger powerwash when post-install
+// completes successfully so that the device is powerwashed on next reboot.
+extern const char kPowerwashMarkerFile[];
+
+// The contents of the powerwash marker file.
+extern const char kPowerwashCommand[];
+
+} // namespace chromeos_update_engine
+
+#endif // CHROMEOS_PLATFORM_UPDATE_ENGINE_CONSTANTS_H