src/add-ons/kernel/file_systems/bfs/Attribute.h

   1 /*
   2  * Copyright 2004-2008, Axel Dörfler, axeld@pinc-software.de.
   3  * This file may be used under the terms of the MIT License.
   4  */
   5 #ifndef ATTRIBUTE_H
   6 #define ATTRIBUTE_H
   7
   8
   9 #include "Inode.h"
  10
  11
  12 struct attr_cookie {
  13         char    name[B_ATTR_NAME_LENGTH];
  14         uint32  type;
  15         int             open_mode;
  16         bool    create;
  17 };
  18
  19
  20 class Attribute {
  21 public:
  22                                                         Attribute(Inode* inode);
  23                                                         Attribute(Inode* inode, attr_cookie* cookie);
  24                                                         ~Attribute();
  25
  26                         status_t                InitCheck();
  27                         status_t                CheckAccess(const char* name, int openMode);
  28
  29                         status_t                Get(const char* name);
  30                         void                    Put();
  31
  32                         status_t                Create(const char* name, type_code type,
  33                                                                 int openMode, attr_cookie** _cookie);
  34                         status_t                Open(const char* name, int openMode,
  35                                                                 attr_cookie** _cookie);
  36
  37                         status_t                Stat(struct stat& stat);
  38
  39                         status_t                Read(attr_cookie* cookie, off_t pos, uint8* buffer,
  40                                                                 size_t* _length);
  41                         status_t                Write(Transaction& transaction, attr_cookie* cookie,
  42                                                                 off_t pos, const uint8* buffer, size_t* _length,
  43                                                                 bool* _created);
  44
  45 private:
  46                         status_t                _Truncate();
  47
  48                         NodeGetter              fNodeGetter;
  49                         Inode*                  fInode;
  50                         small_data*             fSmall;
  51                         Inode*                  fAttribute;
  52                         const char*             fName;
  53 };
  54
  55 #endif  // ATTRIBUTE_H