native_client_sdk/src/libraries/nacl_io/passthroughfs/real_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_PASSTHROUGHFS_REAL_NODE_H_
   6 #define LIBRARIES_NACL_IO_PASSTHROUGHFS_REAL_NODE_H_
   7
   8 #include "nacl_io/node.h"
   9
  10 namespace nacl_io {
  11
  12 class RealNode : public Node {
  13  public:
  14   RealNode(Filesystem* filesystem, int real_fd, bool close_on_destroy = false);
  15
  16  protected:
  17   virtual Error Init(int flags) { return 0; }
  18
  19   virtual void Destroy();
  20
  21  public:
  22   // Normal read/write operations on a file
  23   virtual Error Read(const HandleAttr& attr,
  24                      void* buf,
  25                      size_t count,
  26                      int* out_bytes);
  27   virtual Error Write(const HandleAttr& attr,
  28                       const void* buf,
  29                       size_t count,
  30                       int* out_bytes);
  31   virtual Error FTruncate(off_t size);
  32   virtual Error GetDents(size_t offs,
  33                          struct dirent* pdir,
  34                          size_t count,
  35                          int* out_bytes);
  36   virtual Error GetStat(struct stat* stat);
  37   virtual Error Isatty();
  38   virtual Error MMap(void* addr,
  39                      size_t length,
  40                      int prot,
  41                      int flags,
  42                      size_t offset,
  43                      void** out_addr);
  44
  45  private:
  46   int real_fd_;
  47   bool close_on_destroy_;
  48 };
  49
  50 }  // namespace nacl_io
  51
  52 #endif  // LIBRARIES_NACL_IO_PASSTHROUGHFS_REAL_NODE_H_