1 /*
2  * Copyright (C) 2024 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 BERBERIS_BASE_SCOPED_FD_H
18 #define BERBERIS_BASE_SCOPED_FD_H
19 
20 #include <unistd.h>
21 
22 namespace berberis {
23 
24 class ScopedFd {
25  public:
ScopedFd(int fd)26   ScopedFd(int fd) : fd_{fd} {}
27   ScopedFd(const ScopedFd&) = delete;
28   ScopedFd(ScopedFd&&) = delete;
29   ScopedFd& operator=(const ScopedFd&) = delete;
30   ScopedFd& operator=(ScopedFd&&) = delete;
~ScopedFd()31   ~ScopedFd() { reset(-1); }
32 
33  private:
reset(int fd)34   void reset(int fd) {
35     if (fd_ != -1) {
36       close(fd_);
37     }
38 
39     fd_ = fd;
40   }
41 
42   int fd_;
43 };
44 
45 }  // namespace berberis
46 
47 #endif  // BERBERIS_BASE_SCOPED_FD_H
48