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 #ifndef MISC_INFO_H 16 #define MISC_INFO_H 17 18 #include <iostream> 19 #include <cstdlib> 20 #include <cstdio> 21 #include <unistd.h> 22 23 namespace Updater { 24 constexpr int MAX_COMMAND_SIZE = 32; 25 constexpr int MAX_UPDATE_SIZE = 1280; 26 constexpr int MAX_RESERVED_SIZE = 736; 27 28 // misc partition offset definition. max size of misc is 2MB, do not overflow. 29 constexpr off_t MISC_BASE_OFFSET = 0; 30 31 constexpr off_t MISC_UPDATE_MESSAGE_OFFSET = MISC_BASE_OFFSET; 32 constexpr off_t MISC_UPDATE_MESSAGE_SIZE = MAX_COMMAND_SIZE + MAX_UPDATE_SIZE + MAX_RESERVED_SIZE; 33 34 constexpr off_t MISC_PARTITION_RECORD_OFFSET = MISC_UPDATE_MESSAGE_OFFSET + MISC_UPDATE_MESSAGE_SIZE; 35 constexpr off_t MISC_PARTITION_RECORD_SIZE = 1024; 36 37 constexpr off_t MISC_RECORD_UPDATE_PARTITIONS_OFFSET = MISC_PARTITION_RECORD_OFFSET + MISC_PARTITION_RECORD_SIZE; 38 constexpr off_t MISC_RECORD_UPDATE_PARTITIONS_SIZE = 256; 39 40 struct UpdateMessage { 41 char command[MAX_COMMAND_SIZE]; 42 char update[MAX_UPDATE_SIZE]; 43 char reserved[MAX_RESERVED_SIZE]; 44 }; 45 46 bool WriteUpdaterMessage(const std::string &path, const UpdateMessage &boot); 47 bool ReadUpdaterMessage(const std::string &path, UpdateMessage &boot); 48 bool WriteUpdaterMiscMsg(const UpdateMessage &boot); 49 bool ReadUpdaterMiscMsg(UpdateMessage &boot); 50 } // Updater 51 #endif /* MISC_INFO_H */ 52