1 // 2 // Copyright (C) 2018 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_UPDATE_MANAGER_ROLLBACK_PREFS_H_ 18 #define UPDATE_ENGINE_UPDATE_MANAGER_ROLLBACK_PREFS_H_ 19 20 namespace chromeos_update_manager { 21 22 // Value used to represent that kernel key versions can always roll-forward. 23 // This is the maximum value of a kernel key version. 24 constexpr int kRollforwardInfinity = 0xfffffffe; 25 26 // Whether the device should roll back to the target version, and if yes, which 27 // type of rollback should it do. Matches chrome_device_policy.proto's 28 // AutoUpdateSettingsProto::RollbackToTargetVersion. 29 enum class RollbackToTargetVersion { 30 kUnspecified = 0, 31 kDisabled = 1, 32 kRollbackAndPowerwash = 2, 33 kRollbackAndRestoreIfPossible = 3, 34 kRollbackOnlyIfRestorePossible = 4, 35 // This value must be the last entry. 36 kMaxValue = 5 37 }; 38 39 } // namespace chromeos_update_manager 40 41 #endif // UPDATE_ENGINE_UPDATE_MANAGER_ROLLBACK_PREFS_H_ 42