d118833f3e
The simulator skips executing the operations for dynamic partitions, and will use the logical images under target_files/IMAGES directly. (Similar to the targets without DAP enabled) Bug: 131911365 Test: run update on cuttlefish, run simulator Change-Id: Id318d97ece4560df9f20dc5cabeb8b2e261bdf9c
75 lines
3.4 KiB
C++
75 lines
3.4 KiB
C++
/*
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* Copyright (C) 2019 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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#pragma once
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#include <string>
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#include <string_view>
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#include <vector>
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// This class serves as the base to updater runtime. It wraps the runtime dependent functions; and
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// updates on device and host simulations can have different implementations. e.g. block devices
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// during host simulation merely a temporary file. With this class, the caller side in registered
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// updater's functions will stay the same for both update and simulation.
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class UpdaterRuntimeInterface {
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public:
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virtual ~UpdaterRuntimeInterface() = default;
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// Returns true if it's a runtime instance for simulation.
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virtual bool IsSimulator() const = 0;
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// Returns the value of system property |key|. If the property doesn't exist, returns
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// |default_value|.
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virtual std::string GetProperty(const std::string_view key,
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const std::string_view default_value) const = 0;
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// Given the name of the block device, returns |name| for updates on the device; or the file path
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// to the fake block device for simulations.
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virtual std::string FindBlockDeviceName(const std::string_view name) const = 0;
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// Mounts the |location| on |mount_point|. Returns 0 on success.
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virtual int Mount(const std::string_view location, const std::string_view mount_point,
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const std::string_view fs_type, const std::string_view mount_options) = 0;
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// Returns true if |mount_point| is mounted.
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virtual bool IsMounted(const std::string_view mount_point) const = 0;
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// Unmounts the |mount_point|. Returns a pair of results with the first value indicating
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// if the |mount_point| is mounted, and the second value indicating the result of umount(2).
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virtual std::pair<bool, int> Unmount(const std::string_view mount_point) = 0;
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// Reads |filename| and puts its value to |content|.
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virtual bool ReadFileToString(const std::string_view filename, std::string* content) const = 0;
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// Updates the content of |filename| with |content|.
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virtual bool WriteStringToFile(const std::string_view content,
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const std::string_view filename) const = 0;
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// Wipes the first |len| bytes of block device in |filename|.
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virtual int WipeBlockDevice(const std::string_view filename, size_t len) const = 0;
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// Starts a child process and runs the program with |args|. Uses vfork(2) if |is_vfork| is true.
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virtual int RunProgram(const std::vector<std::string>& args, bool is_vfork) const = 0;
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// Runs tune2fs with arguments |args|.
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virtual int Tune2Fs(const std::vector<std::string>& args) const = 0;
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// Dynamic partition related functions.
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virtual bool MapPartitionOnDeviceMapper(const std::string& partition_name, std::string* path) = 0;
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virtual bool UnmapPartitionOnDeviceMapper(const std::string& partition_name) = 0;
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virtual bool UpdateDynamicPartitions(const std::string_view op_list_value) = 0;
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};
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