1 /* 2 * Copyright (C) 2020 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 "adb_unique_fd.h" 20 21 #include <string> 22 #include <string_view> 23 #include <utility> 24 #include <vector> 25 26 #include <stdint.h> 27 28 #include <android-base/off64_t.h> 29 30 namespace incremental { 31 32 using Size = int64_t; 33 constexpr int kBlockSize = 4096; 34 constexpr int kSha256DigestSize = 32; 35 constexpr int kDigestSize = kSha256DigestSize; 36 constexpr int kMaxSignatureSize = 8096; // incrementalfs.h 37 38 constexpr std::string_view IDSIG = ".idsig"; 39 40 std::vector<int32_t> PriorityBlocksForFile(const std::string& filepath, borrowed_fd fd, 41 Size fileSize); 42 43 Size verity_tree_blocks_for_file(Size fileSize); 44 Size verity_tree_size_for_file(Size fileSize); 45 46 std::pair<std::vector<char>, int32_t> read_id_sig_headers(borrowed_fd fd); 47 std::pair<off64_t, ssize_t> skip_id_sig_headers(borrowed_fd fd); 48 49 } // namespace incremental 50