1 /* 2 * Copyright (c) 2021 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef UPDATER_DATA_WRITER_H 17 #define UPDATER_DATA_WRITER_H 18 19 #include <cstdio> 20 #include <memory> 21 #include <string> 22 #include <unistd.h> 23 #include "updater_env.h" 24 25 namespace Updater { 26 enum WriteMode : int { 27 WRITE_RAW = 1, 28 WRITE_DECRYPT = 2, 29 WRITE_BLOCK = 3, 30 }; 31 32 class DataWriter { 33 public: 34 using DataWriterPtr = DataWriter *; 35 using WriterConstructor = std::unique_ptr<DataWriter> (*)(const std::string &, const std::string &, 36 uint64_t, uint64_t); 37 virtual bool Write(const uint8_t *addr, size_t len, const void *context) = 0; 38 virtual bool Sync(void); ~DataWriter()39 virtual ~DataWriter() {} 40 static std::unique_ptr<DataWriter> CreateDataWriter(WriteMode mode, const std::string &path, UpdaterEnv *env, 41 uint64_t offset = 0); 42 static std::unique_ptr<DataWriter> CreateDataWriter(WriteMode mode, const std::string &path, uint64_t offset = 0); 43 static std::unique_ptr<DataWriter> CreateDataWriter(const std::string &mode, const std::string &path, 44 const std::string &partName = {}, uint64_t startAddr = 0, uint64_t offset = 0); 45 static UpdaterEnv *GetUpdaterEnv(); 46 void SetUpdaterEnv(UpdaterEnv *env); 47 static void ReleaseDataWriter(std::unique_ptr<DataWriter> &writer); 48 static void RegisterDataWriter(const std::string &mode, WriterConstructor constructor); 49 50 protected: 51 virtual int OpenPath(const std::string &path); 52 53 private: 54 static UpdaterEnv *env_; 55 static inline std::unordered_map<std::string, WriterConstructor> constructorMap_; 56 }; 57 58 // Maybe we should read sector size from flash. 59 #define DEFAULT_SECTOR_SIZE (512) 60 } // Updater 61 #endif // UPDATER_DATA_WRITER_H 62