dir_reader_posix.h 1.14 KB
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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef BASE_FILES_DIR_READER_POSIX_H_
#define BASE_FILES_DIR_READER_POSIX_H_

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#include "butil/build_config.h"
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// This header provides a class, DirReaderPosix, which allows one to open and
// read from directories without allocating memory. For the interface, see
// the generic fallback in dir_reader_fallback.h.

// Mac note: OS X has getdirentries, but it only works if we restrict Chrome to
// 32-bit inodes. There is a getdirentries64 syscall in 10.6, but it's not
// wrapped and the direct syscall interface is unstable. Using an unstable API
// seems worse than falling back to enumerating all file descriptors so we will
// probably never implement this on the Mac.

#if defined(OS_LINUX)
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#include "butil/files/dir_reader_linux.h"
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#else
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#include "butil/files/dir_reader_fallback.h"
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#endif

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namespace butil {
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#if defined(OS_LINUX)
typedef DirReaderLinux DirReaderPosix;
#else
typedef DirReaderFallback DirReaderPosix;
#endif

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}  // namespace butil
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#endif // BASE_FILES_DIR_READER_POSIX_H_