native_client_sdk/src/libraries/nacl_io/jsfs/js_fs_node.h

   1 // Copyright 2014 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_JSFS_JS_FS_NODE_H_
   6 #define LIBRARIES_NACL_IO_JSFS_JS_FS_NODE_H_
   7
   8 #include <pthread.h>
   9 #include <stdarg.h>
  10
  11 #include <map>
  12
  13 #include <ppapi/c/pp_var.h>
  14
  15 #include "nacl_io/jsfs/js_fs.h"
  16 #include "nacl_io/node.h"
  17
  18 namespace nacl_io {
  19
  20 class JsFsNode : public Node {
  21  public:
  22   typedef JsFs::RequestId RequestId;
  23
  24  protected:
  25   JsFsNode(Filesystem* filesystem, int32_t fd);
  26   virtual void Destroy();
  27
  28  public:
  29   virtual bool CanOpen(int open_flags);
  30   virtual Error GetStat(struct stat* stat);
  31   virtual Error GetSize(off_t* out_size);
  32
  33   virtual Error FSync();
  34   virtual Error FTruncate(off_t length);
  35   virtual Error Read(const HandleAttr& attr,
  36                      void* buf,
  37                      size_t count,
  38                      int* out_bytes);
  39   virtual Error Write(const HandleAttr& attr,
  40                       const void* buf,
  41                       size_t count,
  42                       int* out_bytes);
  43   virtual Error GetDents(size_t offs,
  44                          struct dirent* pdir,
  45                          size_t count,
  46                          int* out_bytes);
  47
  48   int32_t fd() { return fd_; }
  49
  50  private:
  51   bool SendRequestAndWait(ScopedVar* out_response, const char* format, ...);
  52   int ScanVar(PP_Var var, const char* format, ...);
  53
  54   JsFs* filesystem() { return static_cast<JsFs*>(filesystem_); }
  55
  56   PepperInterface* ppapi_;
  57   VarArrayInterface* array_iface_;
  58   VarArrayBufferInterface* buffer_iface_;
  59   VarInterface* var_iface_;
  60   int32_t fd_;
  61
  62   friend class JsFs;
  63   DISALLOW_COPY_AND_ASSIGN(JsFsNode);
  64 };
  65
  66 }  // namespace nacl_io
  67
  68 #endif  // LIBRARIES_NACL_IO_JSFS_JS_FS_H_