headers/private/storage/FileDescriptorIO.h

   1 /*
   2  * Copyright 2009-2010, Ingo Weinhold, ingo_weinhold@gmx.de.
   3  * Distributed under the terms of the MIT License.
   4  */
   5 #ifndef _FILE_DESCRIPTOR_IO_H
   6 #define _FILE_DESCRIPTOR_IO_H
   7
   8
   9 #include <DataIO.h>
  10
  11
  12 class BFileDescriptorIO : public BPositionIO {
  13 public:
  14                                                                 BFileDescriptorIO(int fd,
  15                                                                         bool takeOverOwnership = false);
  16         virtual                                         ~BFileDescriptorIO();
  17
  18         virtual ssize_t                         Read(void *buffer, size_t size);
  19         virtual ssize_t                         Write(const void *buffer, size_t size);
  20
  21         virtual ssize_t                         ReadAt(off_t position, void *buffer,
  22                                                                         size_t size);
  23         virtual ssize_t                         WriteAt(off_t position, const void *buffer,
  24                                                                         size_t size);
  25
  26         virtual off_t                           Seek(off_t position, uint32 seekMode);
  27         virtual off_t                           Position() const;
  28
  29         virtual status_t                        SetSize(off_t size);
  30         virtual status_t                        GetSize(off_t* size) const;
  31
  32 private:
  33                                                                 BFileDescriptorIO(
  34                                                                         const BFileDescriptorIO& other);
  35                         BFileDescriptorIO&      operator=(const BFileDescriptorIO& other);
  36
  37 private:
  38                         int                                     fFD;
  39                         bool                            fOwnsFD;
  40 };
  41
  42
  43 #endif  // _FILE_DESCRIPTOR_IO_H