1 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 2 // -*- mode: C++ -*- 3 // 4 // Copyright 2022 Google LLC 5 // 6 // Licensed under the Apache License v2.0 with LLVM Exceptions (the 7 // "License"); you may not use this file except in compliance with the 8 // License. You may obtain a copy of the License at 9 // 10 // https://llvm.org/LICENSE.txt 11 // 12 // Unless required by applicable law or agreed to in writing, software 13 // distributed under the License is distributed on an "AS IS" BASIS, 14 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 // See the License for the specific language governing permissions and 16 // limitations under the License. 17 // 18 // Author: Aleksei Vetrov 19 // Author: Matthias Maennich 20 21 #ifndef STG_FILE_DESCRIPTOR_H_ 22 #define STG_FILE_DESCRIPTOR_H_ 23 24 #include <sys/stat.h> // for mode_t 25 26 #include <utility> 27 28 namespace stg { 29 30 // RAII wrapper over file descriptor 31 class FileDescriptor { 32 public: 33 FileDescriptor() = default; 34 FileDescriptor(const char* filename, int flags, mode_t mode = 0); 35 FileDescriptor(const FileDescriptor&) = delete; 36 FileDescriptor& operator=(const FileDescriptor&) = delete; FileDescriptor(FileDescriptor && other)37 FileDescriptor(FileDescriptor&& other) noexcept { 38 std::swap(fd_, other.fd_); 39 } 40 FileDescriptor& operator=(FileDescriptor&& other) = delete; 41 ~FileDescriptor() noexcept(false); 42 43 int Value() const; 44 45 private: 46 int fd_ = -1; 47 }; 48 49 } // namespace stg 50 51 #endif // STG_FILE_DESCRIPTOR_H_ 52