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