1 // 2 // Copyright (C) 2014 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 #ifndef UPDATE_ENGINE_PAYLOAD_CONSUMER_PAYLOAD_CONSTANTS_H_ 18 #define UPDATE_ENGINE_PAYLOAD_CONSUMER_PAYLOAD_CONSTANTS_H_ 19 20 #include <stdint.h> 21 22 #include <limits> 23 24 #include "update_engine/update_metadata.pb.h" 25 26 namespace chromeos_update_engine { 27 28 // The major version used by Chrome OS. 29 extern const uint64_t kChromeOSMajorPayloadVersion; 30 31 // The major version used by Brillo. 32 extern const uint64_t kBrilloMajorPayloadVersion; 33 34 // The minimum and maximum supported major version. 35 extern const uint64_t kMinSupportedMajorPayloadVersion; 36 extern const uint64_t kMaxSupportedMajorPayloadVersion; 37 38 // The minor version used for all full payloads. 39 extern const uint32_t kFullPayloadMinorVersion; 40 41 // The minor version used by the in-place delta generator algorithm. 42 extern const uint32_t kInPlaceMinorPayloadVersion; 43 44 // The minor version used by the A to B delta generator algorithm. 45 extern const uint32_t kSourceMinorPayloadVersion; 46 47 // The minor version that allows per-operation source hash. 48 extern const uint32_t kOpSrcHashMinorPayloadVersion; 49 50 // The minor version that allows BROTLI_BSDIFF, ZERO and DISCARD operation. 51 extern const uint32_t kBrotliBsdiffMinorPayloadVersion; 52 53 // The minor version that allows PUFFDIFF operation. 54 extern const uint32_t kPuffdiffMinorPayloadVersion; 55 56 // The minor version that allows Verity hash tree and FEC generation. 57 extern const uint32_t kVerityMinorPayloadVersion; 58 59 // The minimum and maximum supported minor version. 60 extern const uint32_t kMinSupportedMinorPayloadVersion; 61 extern const uint32_t kMaxSupportedMinorPayloadVersion; 62 63 // The maximum size of the payload header (anything before the protobuf). 64 extern const uint64_t kMaxPayloadHeaderSize; 65 66 // The kernel and rootfs partition names used by the BootControlInterface when 67 // handling update payloads with a major version 1. The names of the updated 68 // partitions are include in the payload itself for major version 2. 69 extern const char kPartitionNameKernel[]; 70 extern const char kPartitionNameRoot[]; 71 72 extern const char kBspatchPath[]; 73 extern const char kDeltaMagic[4]; 74 75 // A block number denoting a hole on a sparse file. Used on Extents to refer to 76 // section of blocks not present on disk on a sparse file. 77 const uint64_t kSparseHole = std::numeric_limits<uint64_t>::max(); 78 79 // Return the name of the operation type. 80 const char* InstallOperationTypeName(InstallOperation::Type op_type); 81 82 } // namespace chromeos_update_engine 83 84 #endif // UPDATE_ENGINE_PAYLOAD_CONSUMER_PAYLOAD_CONSTANTS_H_ 85