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-rw-r--r--ipc/chromium/src/base/dir_reader_bsd.h103
1 files changed, 103 insertions, 0 deletions
diff --git a/ipc/chromium/src/base/dir_reader_bsd.h b/ipc/chromium/src/base/dir_reader_bsd.h
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+++ b/ipc/chromium/src/base/dir_reader_bsd.h
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// derived from dir_reader_linux.h
+
+#ifndef BASE_DIR_READER_BSD_H_
+#define BASE_DIR_READER_BSD_H_
+#pragma once
+
+#include <dirent.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdint.h>
+#include <unistd.h>
+
+#include "base/logging.h"
+#include "base/eintr_wrapper.h"
+
+// See the comments in dir_reader_posix.h about this.
+
+namespace base {
+
+class DirReaderBSD {
+ public:
+ explicit DirReaderBSD(const char* directory_path)
+#ifdef O_DIRECTORY
+ : fd_(open(directory_path, O_RDONLY | O_DIRECTORY)),
+#else
+ : fd_(open(directory_path, O_RDONLY)),
+#endif
+ offset_(0),
+ size_(0) {
+ memset(buf_, 0, sizeof(buf_));
+ }
+
+ ~DirReaderBSD() {
+ if (fd_ >= 0) {
+ if (HANDLE_EINTR(close(fd_)))
+ DLOG(ERROR) << "Failed to close directory handle";
+ }
+ }
+
+ bool IsValid() const {
+ return fd_ >= 0;
+ }
+
+ // Move to the next entry returning false if the iteration is complete.
+ bool Next() {
+ if (size_) {
+ struct dirent* dirent = reinterpret_cast<struct dirent*>(&buf_[offset_]);
+#ifdef OS_DRAGONFLY
+ offset_ += _DIRENT_DIRSIZ(dirent);
+#else
+ offset_ += dirent->d_reclen;
+#endif
+ }
+
+ if (offset_ != size_)
+ return true;
+
+ const int r = getdents(fd_, buf_, sizeof(buf_));
+ if (r == 0)
+ return false;
+ if (r == -1) {
+ DLOG(ERROR) << "getdents returned an error: " << errno;
+ return false;
+ }
+ size_ = r;
+ offset_ = 0;
+ return true;
+ }
+
+ const char* name() const {
+ if (!size_)
+ return NULL;
+
+ const struct dirent* dirent =
+ reinterpret_cast<const struct dirent*>(&buf_[offset_]);
+ return dirent->d_name;
+ }
+
+ int fd() const {
+ return fd_;
+ }
+
+ static bool IsFallback() {
+ return false;
+ }
+
+ private:
+ const int fd_;
+ char buf_[512];
+ size_t offset_, size_;
+
+ DISALLOW_COPY_AND_ASSIGN(DirReaderBSD);
+};
+
+} // namespace base
+
+#endif // BASE_DIR_READER_BSD_H_