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#include "shill/file_io.h" 18 19#include <fcntl.h> 20#include <unistd.h> 21 22#include <base/posix/eintr_wrapper.h> 23 24namespace shill { 25 26namespace { 27 28base::LazyInstance<FileIO> g_file_io = LAZY_INSTANCE_INITIALIZER; 29 30} // namespace 31 32FileIO::FileIO() {} 33 34FileIO::~FileIO() {} 35 36// static 37FileIO* FileIO::GetInstance() { 38 return g_file_io.Pointer(); 39} 40 41ssize_t FileIO::Write(int fd, const void* buf, size_t count) { 42 return HANDLE_EINTR(write(fd, buf, count)); 43} 44 45ssize_t FileIO::Read(int fd, void* buf, size_t count) { 46 return HANDLE_EINTR(read(fd, buf, count)); 47} 48 49int FileIO::Close(int fd) { 50 return IGNORE_EINTR(close(fd)); 51} 52 53int FileIO::SetFdNonBlocking(int fd) { 54 const int flags = HANDLE_EINTR(fcntl(fd, F_GETFL)) | O_NONBLOCK; 55 return HANDLE_EINTR(fcntl(fd, F_SETFL, flags)); 56} 57 58} // namespace shill 59