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#ifndef BASE_FILES_DIR_READER_POSIX_H_
6#define BASE_FILES_DIR_READER_POSIX_H_
7
8#include "build/build_config.h"
9
10// This header provides a class, DirReaderPosix, which allows one to open and
11// read from directories without allocating memory. For the interface, see
12// the generic fallback in dir_reader_fallback.h.
13
14// Mac note: OS X has getdirentries, but it only works if we restrict Chrome to
15// 32-bit inodes. There is a getdirentries64 syscall in 10.6, but it's not
16// wrapped and the direct syscall interface is unstable. Using an unstable API
17// seems worse than falling back to enumerating all file descriptors so we will
18// probably never implement this on the Mac.
19
20#if defined(OS_LINUX)
21#include "base/files/dir_reader_linux.h"
22#else
23#include "base/files/dir_reader_fallback.h"
24#endif
25
26namespace base {
27
28#if defined(OS_LINUX)
29typedef DirReaderLinux DirReaderPosix;
30#else
31typedef DirReaderFallback DirReaderPosix;
32#endif
33
34}  // namespace base
35
36#endif // BASE_FILES_DIR_READER_POSIX_H_
37