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comparison: ipc/chromium/src/base/dir_reader_bsd.h
ipc/chromium/src/base/dir_reader_bsd.h
- changeset 0
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| -1:000000000000 | 0:f51e9f1ecd59 |
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| 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 // derived from dir_reader_linux.h | |
| 6 | |
| 7 #ifndef BASE_DIR_READER_BSD_H_ | |
| 8 #define BASE_DIR_READER_BSD_H_ | |
| 9 #pragma once | |
| 10 | |
| 11 #include <dirent.h> | |
| 12 #include <errno.h> | |
| 13 #include <fcntl.h> | |
| 14 #include <stdint.h> | |
| 15 #include <unistd.h> | |
| 16 | |
| 17 #include "base/logging.h" | |
| 18 #include "base/eintr_wrapper.h" | |
| 19 | |
| 20 // See the comments in dir_reader_posix.h about this. | |
| 21 | |
| 22 namespace base { | |
| 23 | |
| 24 class DirReaderBSD { | |
| 25 public: | |
| 26 explicit DirReaderBSD(const char* directory_path) | |
| 27 #ifdef O_DIRECTORY | |
| 28 : fd_(open(directory_path, O_RDONLY | O_DIRECTORY)), | |
| 29 #else | |
| 30 : fd_(open(directory_path, O_RDONLY)), | |
| 31 #endif | |
| 32 offset_(0), | |
| 33 size_(0) { | |
| 34 memset(buf_, 0, sizeof(buf_)); | |
| 35 } | |
| 36 | |
| 37 ~DirReaderBSD() { | |
| 38 if (fd_ >= 0) { | |
| 39 if (HANDLE_EINTR(close(fd_))) | |
| 40 DLOG(ERROR) << "Failed to close directory handle"; | |
| 41 } | |
| 42 } | |
| 43 | |
| 44 bool IsValid() const { | |
| 45 return fd_ >= 0; | |
| 46 } | |
| 47 | |
| 48 // Move to the next entry returning false if the iteration is complete. | |
| 49 bool Next() { | |
| 50 if (size_) { | |
| 51 struct dirent* dirent = reinterpret_cast<struct dirent*>(&buf_[offset_]); | |
| 52 #ifdef OS_DRAGONFLY | |
| 53 offset_ += _DIRENT_DIRSIZ(dirent); | |
| 54 #else | |
| 55 offset_ += dirent->d_reclen; | |
| 56 #endif | |
| 57 } | |
| 58 | |
| 59 if (offset_ != size_) | |
| 60 return true; | |
| 61 | |
| 62 const int r = getdents(fd_, buf_, sizeof(buf_)); | |
| 63 if (r == 0) | |
| 64 return false; | |
| 65 if (r == -1) { | |
| 66 DLOG(ERROR) << "getdents returned an error: " << errno; | |
| 67 return false; | |
| 68 } | |
| 69 size_ = r; | |
| 70 offset_ = 0; | |
| 71 return true; | |
| 72 } | |
| 73 | |
| 74 const char* name() const { | |
| 75 if (!size_) | |
| 76 return NULL; | |
| 77 | |
| 78 const struct dirent* dirent = | |
| 79 reinterpret_cast<const struct dirent*>(&buf_[offset_]); | |
| 80 return dirent->d_name; | |
| 81 } | |
| 82 | |
| 83 int fd() const { | |
| 84 return fd_; | |
| 85 } | |
| 86 | |
| 87 static bool IsFallback() { | |
| 88 return false; | |
| 89 } | |
| 90 | |
| 91 private: | |
| 92 const int fd_; | |
| 93 char buf_[512]; | |
| 94 size_t offset_, size_; | |
| 95 | |
| 96 DISALLOW_COPY_AND_ASSIGN(DirReaderBSD); | |
| 97 }; | |
| 98 | |
| 99 } // namespace base | |
| 100 | |
| 101 #endif // BASE_DIR_READER_BSD_H_ |
