headers/os/storage/File.h

   1 /*
   2  * Copyright 2002-2006, Haiku, Inc. All Rights Reserved.
   3  * Distributed under the terms of the MIT License.
   4  */
   5 #ifndef _FILE_H
   6 #define _FILE_H
   7
   8
   9 #include <DataIO.h>
  10 #include <Node.h>
  11 #include <StorageDefs.h>
  12
  13
  14 class BEntry;
  15
  16
  17 class BFile : public BNode, public BPositionIO {
  18         public:
  19                 BFile();
  20                 BFile(const BFile &file);
  21                 BFile(const entry_ref *ref, uint32 openMode);
  22                 BFile(const BEntry *entry, uint32 openMode);
  23                 BFile(const char *path, uint32 openMode);
  24                 BFile(const BDirectory *dir, const char *path, uint32 openMode);
  25                 virtual ~BFile();
  26
  27                 status_t SetTo(const entry_ref *ref, uint32 openMode);
  28                 status_t SetTo(const BEntry *entry, uint32 openMode);
  29                 status_t SetTo(const char *path, uint32 openMode);
  30                 status_t SetTo(const BDirectory *dir, const char *path, uint32 openMode);
  31
  32                 bool IsReadable() const;
  33                 bool IsWritable() const;
  34
  35                 virtual ssize_t Read(void *buffer, size_t size);
  36                 virtual ssize_t ReadAt(off_t location, void *buffer, size_t size);
  37                 virtual ssize_t Write(const void *buffer, size_t size);
  38                 virtual ssize_t WriteAt(off_t location, const void *buffer, size_t size);
  39
  40                 virtual off_t Seek(off_t offset, uint32 seekMode);
  41                 virtual off_t Position() const;
  42
  43                 virtual status_t SetSize(off_t size);
  44                 virtual status_t GetSize(off_t* size) const;
  45
  46                 BFile &operator=(const BFile &file);
  47
  48         private:
  49                 virtual void _PhiloFile1();
  50                 virtual void _PhiloFile2();
  51                 virtual void _PhiloFile3();
  52                 virtual void _PhiloFile4();
  53                 virtual void _PhiloFile5();
  54                 virtual void _PhiloFile6();
  55
  56                 uint32 _reservedData[8];
  57
  58         private:
  59                 int get_fd() const;
  60                 virtual void close_fd();
  61
  62         private:
  63                 // The file's open mode.
  64                 uint32 fMode;
  65 };
  66
  67 #endif  // _FILE_H