1 /*
2  * Copyright (C) 2019 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 ANDROID_APEXD_APEXD_CHECKPOINT_H_
18 #define ANDROID_APEXD_APEXD_CHECKPOINT_H_
19 
20 #include <string>
21 
22 #include <android-base/result.h>
23 
24 namespace android {
25 namespace apex {
26 
27 class CheckpointInterface {
28  public:
~CheckpointInterface()29   virtual ~CheckpointInterface() {}
30 
31   virtual android::base::Result<bool> SupportsFsCheckpoints() = 0;
32 
33   virtual android::base::Result<bool> NeedsCheckpoint() = 0;
34   virtual android::base::Result<bool> NeedsRollback() = 0;
35   virtual android::base::Result<void> StartCheckpoint(int32_t numRetries) = 0;
36 
37   virtual android::base::Result<void> AbortChanges(const std::string& msg,
38                                                    bool retry) = 0;
39 };
40 
41 }  // namespace apex
42 }  // namespace android
43 
44 #endif  // ANDROID_APEXD_APEXD_CHECKPOINT_H_
45