1 /*
2  * Copyright (c) 2021 Huawei Device Co., Ltd.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at
6  *
7  * http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 #ifndef FD_GUARD_H
17 #define FD_GUARD_H
18 
19 namespace OHOS {
20 namespace DistributedFS {
21 class FDGuard final {
22 public:
23     FDGuard() = default;
24     explicit FDGuard(int fd);
25     FDGuard(int fd, bool autoClose);
26 
27     FDGuard(const FDGuard &fdg) = delete;
28     FDGuard &operator=(const FDGuard &fdg) = delete;
29 
30     FDGuard(FDGuard &&fdg);
31     FDGuard &operator=(FDGuard &&fdg);
32 
33     operator bool() const;
34 
35     ~FDGuard();
36 
37     int GetFD() const;
38     void SetFD(int fd, bool autoClose = true);
39     void ClearFD();
40 
41 private:
42     int fd_ = -1;
43     bool autoClose_ = true;
44 };
45 } // namespace DistributedFS
46 } // namespace OHOS
47 #endif