1 /* 2 * Copyright (C) 2022 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #pragma once 18 19 #include "FileSystem.h" 20 21 #include <optional> 22 #include <string> 23 #include <vector> 24 25 namespace android { 26 namespace vintf { 27 28 // APEX VINTF interface 29 class ApexInterface { 30 public: 31 virtual ~ApexInterface() = default; 32 // Check if there is an update for the given type of APEX files in the system 33 virtual bool HasUpdate(FileSystem* fileSystem) const = 0; 34 // Get device VINTF directories 35 virtual status_t DeviceVintfDirs(FileSystem* fileSystem, std::vector<std::string>* out, 36 std::string* error) = 0; 37 }; 38 39 namespace details { 40 41 // Provide default implementation for ApexInterface 42 class Apex : public ApexInterface { 43 public: 44 Apex() = default; 45 bool HasUpdate(FileSystem* fileSystem) const override; 46 status_t DeviceVintfDirs(FileSystem* fileSystem, std::vector<std::string>* out, 47 std::string* error) override; 48 49 private: 50 std::optional<int64_t> mtime_; 51 }; 52 53 } // namespace details 54 } // namespace vintf 55 } // namespace android 56