native_client_sdk/src/libraries/nacl_io/html5fs/html5_fs_node.h

   1 // Copyright 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_HTML5FS_HTML5_FS_NODE_H_
   6 #define LIBRARIES_NACL_IO_HTML5FS_HTML5_FS_NODE_H_
   7
   8 #include <ppapi/c/pp_instance.h>
   9 #include <ppapi/c/pp_resource.h>
  10 #include "nacl_io/node.h"
  11
  12 namespace nacl_io {
  13
  14 class Html5Fs;
  15 class FileIoInterface;
  16 class FileRefInterface;
  17 class VarInterface;
  18
  19 class Html5FsNode : public Node {
  20  public:
  21   // Normal OS operations on a node (file), can be called by the kernel
  22   // directly so it must lock and unlock appropriately.  These functions
  23   // must not be called by the filesystem.
  24   virtual Error FSync();
  25   virtual Error GetDents(size_t offs,
  26                          struct dirent* pdir,
  27                          size_t count,
  28                          int* out_bytes);
  29   virtual Error GetStat(struct stat* stat);
  30   virtual Error Read(const HandleAttr& attr,
  31                      void* buf,
  32                      size_t count,
  33                      int* out_bytes);
  34   virtual Error FTruncate(off_t size);
  35   virtual Error Write(const HandleAttr& attr,
  36                       const void* buf,
  37                       size_t count,
  38                       int* out_bytes);
  39
  40   virtual int GetType();
  41   virtual Error GetSize(off_t* out_size);
  42   virtual Error Fchmod(mode_t mode);
  43
  44  protected:
  45   Html5FsNode(Filesystem* filesystem, PP_Resource fileref);
  46
  47   // Init with standard open flags
  48   virtual Error Init(int open_flags);
  49   virtual void Destroy();
  50
  51  private:
  52   FileIoInterface* file_io_iface_;
  53   FileRefInterface* file_ref_iface_;
  54   VarInterface* var_iface_;
  55   PP_Resource fileref_resource_;
  56   PP_Resource fileio_resource_;  // 0 if the file is a directory.
  57
  58   friend class Html5Fs;
  59 };
  60
  61 }  // namespace nacl_io
  62
  63 #endif  // LIBRARIES_NACL_IO_HTML5FS_HTML5_FS_NODE_H_