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.
5 #ifndef BASE_FILES_DIR_READER_LINUX_H_
6 #define BASE_FILES_DIR_READER_LINUX_H_
11 #include <sys/syscall.h>
14 #include "base/logging.h"
15 #include "base/posix/eintr_wrapper.h"
17 // See the comments in dir_reader_posix.h about this.
24 unsigned short d_reclen;
29 class DirReaderLinux {
31 explicit DirReaderLinux(const char* directory_path)
32 : fd_(open(directory_path, O_RDONLY | O_DIRECTORY)),
35 memset(buf_, 0, sizeof(buf_));
40 if (HANDLE_EINTR(close(fd_)))
41 RAW_LOG(ERROR, "Failed to close directory handle");
45 bool IsValid() const {
49 // Move to the next entry returning false if the iteration is complete.
52 linux_dirent* dirent = reinterpret_cast<linux_dirent*>(&buf_[offset_]);
53 offset_ += dirent->d_reclen;
59 const int r = syscall(__NR_getdents64, fd_, buf_, sizeof(buf_));
63 DPLOG(FATAL) << "getdents64 returned an error: " << errno;
71 const char* name() const {
75 const linux_dirent* dirent =
76 reinterpret_cast<const linux_dirent*>(&buf_[offset_]);
77 return dirent->d_name;
84 static bool IsFallback() {
90 unsigned char buf_[512];
91 size_t offset_, size_;
93 DISALLOW_COPY_AND_ASSIGN(DirReaderLinux);
98 #endif // BASE_FILES_DIR_READER_LINUX_H_