base/dir_reader_posix.h

   1 // Copyright (c) 2010 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_DIR_READER_POSIX_H_
   6 #define BASE_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/dir_reader_linux.h"
  22 #else
  23 #include "base/dir_reader_fallback.h"
  24 #endif
  25
  26 namespace base {
  27
  28 #if defined(OS_LINUX)
  29 typedef DirReaderLinux DirReaderPosix;
  30 #else
  31 typedef DirReaderFallback DirReaderPosix;
  32 #endif
  33
  34 }  // namespace base
  35
  36 #endif // BASE_DIR_READER_POSIX_H_