net/disk_cache/simple/simple_index_file_posix.cc

   1 // Copyright (c) 2013 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 #include "net/disk_cache/simple/simple_index_file.h"
   6
   7 #include <dirent.h>
   8 #include <sys/stat.h>
   9 #include <sys/types.h>
  10 #include <unistd.h>
  11
  12 #include <string>
  13
  14 #include "base/logging.h"
  15 #include "base/memory/scoped_ptr.h"
  16
  17 namespace disk_cache {
  18 namespace {
  19
  20 struct DirCloser {
  21   void operator()(DIR* dir) { closedir(dir); }
  22 };
  23
  24 typedef scoped_ptr<DIR, DirCloser> ScopedDir;
  25
  26 }  // namespace
  27
  28 // static
  29 bool SimpleIndexFile::TraverseCacheDirectory(
  30     const base::FilePath& cache_path,
  31     const EntryFileCallback& entry_file_callback) {
  32   const ScopedDir dir(opendir(cache_path.value().c_str()));
  33   if (!dir) {
  34     PLOG(ERROR) << "opendir " << cache_path.value();
  35     return false;
  36   }
  37   dirent entry, *result;
  38   while (readdir_r(dir.get(), &entry, &result) == 0) {
  39     if (!result)
  40       return true;  // The traversal completed successfully.
  41     const std::string file_name(result->d_name);
  42     if (file_name == "." || file_name == "..")
  43       continue;
  44     const base::FilePath file_path = cache_path.Append(
  45         base::FilePath(file_name));
  46     entry_file_callback.Run(file_path);
  47   }
  48   PLOG(ERROR) << "readdir_r " << cache_path.value();
  49   return false;
  50 }
  51
  52 }  // namespace disk_cache