1 // Copyright 2012 The Chromium Authors 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 BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_ANDROID) 21 #include "base/files/dir_reader_linux.h" 22 #else 23 #include "base/files/dir_reader_fallback.h" 24 #endif 25 26 namespace base { 27 28 #if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_ANDROID) 29 typedef DirReaderLinux DirReaderPosix; 30 #else 31 typedef DirReaderFallback DirReaderPosix; 32 #endif 33 34 } // namespace base 35 36 #endif // BASE_FILES_DIR_READER_POSIX_H_ 37