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100 lines
3.4 KiB
100 lines
3.4 KiB
//
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// Copyright (C) 2015 The Android Open Source Project
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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// This module abstracts the properties tied to the current running image. These
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// properties are meant to be constant during the life of this daemon, but can
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// be modified in dev-move or non-official builds.
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#ifndef UPDATE_ENGINE_CROS_IMAGE_PROPERTIES_H_
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#define UPDATE_ENGINE_CROS_IMAGE_PROPERTIES_H_
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#include <string>
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namespace chromeos_update_engine {
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// The read-only system properties of the running image.
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struct ImageProperties {
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// The product id of the image used for all channels, except canary.
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std::string product_id;
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// The canary-channel product id.
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std::string canary_product_id;
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// The product version of this image.
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std::string version;
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// The version of all product components in key values pairs.
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std::string product_components;
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// A unique string that identifies this build. Normally a combination of the
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// the version, signing keys and build target.
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std::string build_fingerprint;
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// The Android build type, should be either 'user', 'userdebug' or 'eng'.
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// It's empty string on other platform.
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std::string build_type;
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// The board name this image was built for.
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std::string board;
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// The release channel this image was obtained from.
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std::string current_channel;
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// Whether we allow arbitrary channels instead of just the ones listed in
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// kChannelsByStability.
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bool allow_arbitrary_channels = false;
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// The Omaha URL this image should get updates from.
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std::string omaha_url;
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};
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// The mutable image properties are read-write image properties, initialized
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// with values from the image but can be modified by storing them in the
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// stateful partition.
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struct MutableImageProperties {
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// The release channel we are tracking.
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std::string target_channel;
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// Whether powerwash is allowed when downloading an update for the selected
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// target_channel.
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bool is_powerwash_allowed{false};
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};
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// Loads all the image properties from the running system. In case of error
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// loading any of these properties from the read-only system image a default
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// value may be returned instead.
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ImageProperties LoadImageProperties();
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// Loads the mutable image properties from the stateful partition if found or
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// the system image otherwise.
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MutableImageProperties LoadMutableImageProperties();
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// Stores the mutable image properties in the stateful partition. Returns
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// whether the operation succeeded.
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bool StoreMutableImageProperties(const MutableImageProperties& properties);
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// Logs the image properties.
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void LogImageProperties();
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// Sets the root_prefix used to load files from during unittests to
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// |test_root_prefix|. Passing a nullptr value resets it to the default.
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namespace test {
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void SetImagePropertiesRootPrefix(const char* test_root_prefix);
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} // namespace test
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} // namespace chromeos_update_engine
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#endif // UPDATE_ENGINE_CROS_IMAGE_PROPERTIES_H_
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