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      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
     53