dir_reader_posix.h (1681B)
1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ 2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */ 3 // Copyright (c) 2010 The Chromium Authors. All rights reserved. 4 // Use of this source code is governed by a BSD-style license that can be 5 // found in the LICENSE file. 6 7 #ifndef BASE_DIR_READER_POSIX_H_ 8 #define BASE_DIR_READER_POSIX_H_ 9 #pragma once 10 11 // This header provides a class, DirReaderPosix, which allows one to open and 12 // read from directories without allocating memory. For the interface, see 13 // the generic fallback in dir_reader_fallback.h. 14 15 // Mac note: OS X has getdirentries, but it only works if we restrict Chrome to 16 // 32-bit inodes. There is a getdirentries64 syscall in 10.6, but it's not 17 // wrapped and the direct syscall interface is unstable. Using an unstable API 18 // seems worse than falling back to enumerating all file descriptors so we will 19 // probably never implement this on the Mac. 20 21 #if defined(XP_LINUX) 22 # include "base/dir_reader_linux.h" 23 #elif (defined(__DragonFly__) || defined(XP_FREEBSD) || defined(XP_NETBSD) || \ 24 defined(XP_OPENBSD)) && \ 25 !defined(__GLIBC__) 26 # include "base/dir_reader_bsd.h" 27 #else 28 # include "base/dir_reader_fallback.h" 29 #endif 30 31 namespace base { 32 33 #if defined(XP_LINUX) 34 typedef DirReaderLinux DirReaderPosix; 35 #elif (defined(__DragonFly__) || defined(XP_FREEBSD) || defined(XP_NETBSD) || \ 36 defined(XP_OPENBSD)) && \ 37 !defined(__GLIBC__) 38 typedef DirReaderBSD DirReaderPosix; 39 #else 40 typedef DirReaderFallback DirReaderPosix; 41 #endif 42 43 } // namespace base 44 45 #endif // BASE_DIR_READER_POSIX_H_