1 /*
2  * Copyright (C) 2013 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 #pragma once
18 
19 #include <errno.h>
20 
21 #include "platform/bionic/macros.h"
22 
23 class ErrnoRestorer {
24  public:
ErrnoRestorer()25   explicit ErrnoRestorer() : saved_errno_(errno) {
26   }
27 
~ErrnoRestorer()28   ~ErrnoRestorer() {
29     errno = saved_errno_;
30   }
31 
override(int new_errno)32   void override(int new_errno) {
33     saved_errno_ = new_errno;
34   }
35 
36  private:
37   int saved_errno_;
38 
39   BIONIC_DISALLOW_COPY_AND_ASSIGN(ErrnoRestorer);
40 };
41