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 virtual bool Write(const uint8_t *addr, size_t len, const void *context) = 0; ~DataWriter()36 virtual ~DataWriter() {} 37 static std::unique_ptr<DataWriter> CreateDataWriter(WriteMode mode, const std::string &path, UpdaterEnv *env, 38 uint64_t offset = 0); 39 static std::unique_ptr<DataWriter> CreateDataWriter(WriteMode mode, const std::string &path, uint64_t offset = 0); 40 static UpdaterEnv *GetUpdaterEnv(); 41 void SetUpdaterEnv(UpdaterEnv *env); 42 static void ReleaseDataWriter(std::unique_ptr<DataWriter> &writer); 43 44 protected: 45 virtual int OpenPath(const std::string &path); 46 47 private: 48 static UpdaterEnv *env_; 49 }; 50 51 // Maybe we should read sector size from flash. 52 #define DEFAULT_SECTOR_SIZE (512) 53 } // Updater 54 #endif // UPDATER_DATA_WRITER_H 55