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 minor version used for all full payloads. 35 extern const uint32_t kFullPayloadMinorVersion; 36 37 // The minor version used by the in-place delta generator algorithm. 38 extern const uint32_t kInPlaceMinorPayloadVersion; 39 40 // The minor version used by the A to B delta generator algorithm. 41 extern const uint32_t kSourceMinorPayloadVersion; 42 43 // The minor version that allows per-operation source hash. 44 extern const uint32_t kOpSrcHashMinorPayloadVersion; 45 46 // The minor version that allows IMGDIFF operation. 47 extern const uint32_t kImgdiffMinorPayloadVersion; 48 49 50 // The kernel and rootfs partition names used by the BootControlInterface when 51 // handling update payloads with a major version 1. The names of the updated 52 // partitions are include in the payload itself for major version 2. 53 extern const char kLegacyPartitionNameKernel[]; 54 extern const char kLegacyPartitionNameRoot[]; 55 56 extern const char kBspatchPath[]; 57 extern const char kDeltaMagic[4]; 58 59 // The list of compatible SHA256 hashes of zlib source code. 60 // This is used to check if the source image have a compatible zlib (produce 61 // same compressed result given the same input). 62 // When a new fingerprint is found, please examine the changes in zlib source 63 // carefully and determine if it's still compatible with previous version, if 64 // yes then add the new fingerprint to this array, otherwise remove all previous 65 // fingerprints in the array first, and only include the new fingerprint. 66 extern const char kCompatibleZlibFingerprint[3][65]; 67 68 // A block number denoting a hole on a sparse file. Used on Extents to refer to 69 // section of blocks not present on disk on a sparse file. 70 const uint64_t kSparseHole = std::numeric_limits<uint64_t>::max(); 71 72 // Return the name of the operation type. 73 const char* InstallOperationTypeName(InstallOperation_Type op_type); 74 75 } // namespace chromeos_update_engine 76 77 #endif // UPDATE_ENGINE_PAYLOAD_CONSUMER_PAYLOAD_CONSTANTS_H_ 78