| /* |
| * Copyright (C) 2019 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #pragma once |
| |
| #include <string> |
| #include <vector> |
| #include <map> |
| |
| namespace android { |
| namespace hardware { |
| namespace boot { |
| namespace V1_0 { |
| namespace implementation { |
| |
| #define GPT_SIGNATURE 0x5452415020494645UL |
| |
| typedef struct { |
| uint8_t type_guid[16]; |
| uint8_t guid[16]; |
| uint64_t first_lba; |
| uint64_t last_lba; |
| uint64_t attr; |
| uint16_t name[36]; |
| } __attribute__((packed)) gpt_entry; |
| |
| typedef struct { |
| uint64_t signature; |
| uint32_t revision; |
| uint32_t header_size; |
| uint32_t crc32; |
| uint32_t reserved; |
| uint64_t current_lba; |
| uint64_t backup_lba; |
| uint64_t first_usable_lba; |
| uint64_t last_usable_lba; |
| uint8_t disk_guid[16]; |
| uint64_t start_lba; |
| uint32_t entry_count; |
| uint32_t entry_size; |
| uint32_t entries_crc32; |
| } __attribute__((packed)) gpt_header; |
| |
| class GptUtils { |
| public: |
| GptUtils(const std::string dev_path); |
| int Load(void); |
| gpt_entry *GetPartitionEntry(std::string name); |
| int Sync(void); |
| ~GptUtils(); |
| |
| private: |
| std::string dev_path; |
| int fd; |
| uint32_t block_size; |
| gpt_header gpt_primary; |
| gpt_header gpt_backup; |
| std::vector<gpt_entry> entry_array; |
| std::map<std::string, gpt_entry *>entries; |
| }; |
| |
| } // namespace implementation |
| } // namespace V1_0 |
| } // namespace boot |
| } // namespace hardware |
| } // namespace android |