native_client_sdk/src/libraries/nacl_io/getdents_helper.h

   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 #ifndef LIBRARIES_NACL_IO_GETDENTS_HELPER_H_
   6 #define LIBRARIES_NACL_IO_GETDENTS_HELPER_H_
   7
   8 #include <vector>
   9
  10 #include "nacl_io/error.h"
  11 #include "nacl_io/osdirent.h"
  12
  13 namespace nacl_io {
  14
  15 class GetDentsHelper {
  16  public:
  17   // Initialize the helper without any defaults.
  18   GetDentsHelper();
  19   GetDentsHelper(ino_t curdir_ino, ino_t parentdir_ino);
  20
  21   void Reset();
  22   void AddDirent(ino_t ino, const char* name, size_t namelen);
  23   Error GetDents(size_t offs, dirent* pdir, size_t size, int* out_bytes) const;
  24
  25  private:
  26   void Initialize();
  27
  28   std::vector<dirent> dirents_;
  29   ino_t curdir_ino_;
  30   ino_t parentdir_ino_;
  31   bool init_defaults_;
  32 };
  33
  34 }  // namespace nacl_io
  35
  36 #endif  // LIBRARIES_NACL_IO_GETDENTS_HELPER_H_