| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // -*- mode: C++ -*- |
| // |
| // Copyright 2022 Google LLC |
| // |
| // Licensed under the Apache License v2.0 with LLVM Exceptions (the |
| // "License"); you may not use this file except in compliance with the |
| // License. You may obtain a copy of the License at |
| // |
| // https://llvm.org/LICENSE.txt |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| // |
| // Author: Aleksei Vetrov |
| // Author: Matthias Maennich |
| |
| #include "file_descriptor.h" |
| |
| #include <fcntl.h> |
| #include <unistd.h> |
| |
| #include <cerrno> |
| #include <exception> |
| |
| #include "error.h" |
| |
| namespace stg { |
| |
| FileDescriptor::FileDescriptor(const char* filename, int flags, mode_t mode) |
| : fd_(open(filename, flags, mode)) { |
| if (fd_ < 0) { |
| Die() << "open failed: " << Error(errno); |
| } |
| } |
| |
| FileDescriptor::~FileDescriptor() noexcept(false) { |
| // If we're unwinding, ignore any close failure. |
| if (fd_ >= 0 && close(fd_) != 0 && std::uncaught_exceptions() == 0) { |
| Die() << "close failed: " << Error(errno); |
| } |
| fd_ = -1; |
| } |
| |
| |
| int FileDescriptor::Value() const { |
| Check(fd_ >= 0) << "FileDescriptor was not initialized"; |
| return fd_; |
| } |
| |
| } // namespace stg |