1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "base/files/file.h" 6 #include "base/logging.h" 7 #include "dbus/file_descriptor.h" 8 9 namespace dbus { 10 ~FileDescriptor()11FileDescriptor::~FileDescriptor() { 12 if (owner_) 13 base::File auto_closer(value_); 14 } 15 value() const16int FileDescriptor::value() const { 17 CHECK(valid_); 18 return value_; 19 } 20 TakeValue()21int FileDescriptor::TakeValue() { 22 CHECK(valid_); // NB: check first so owner_ is unchanged if this triggers 23 owner_ = false; 24 return value_; 25 } 26 CheckValidity()27void FileDescriptor::CheckValidity() { 28 base::File file(value_); 29 base::File::Info info; 30 bool ok = file.GetInfo(&info); 31 file.TakePlatformFile(); // Prevent |value_| from being closed by |file|. 32 valid_ = (ok && !info.is_directory); 33 } 34 35 } // namespace dbus 36