1 //---------------------------------------------------------------------- 2 // This software is part of the OpenBeOS distribution and is covered 3 // by the OpenBeOS license. 4 //--------------------------------------------------------------------- 5 /*! 6 \file Node.h 7 BNode and node_ref interface declarations. 8 */ 9 10 #ifndef _NODE_H 11 #define _NODE_H 12 13 #include <Statable.h> 14 #include <StorageDefs.Private.h> 15 16 #ifdef USE_OPENBEOS_NAMESPACE 17 namespace OpenBeOS { 18 #endif 19 20 //--------------------------------------------------------------- 21 // node_ref 22 //--------------------------------------------------------------- 23 24 //! Reference structure to a particular vnode on a particular device 25 /*! <b>node_ref</b> - A node reference. 26 27 @author <a href="mailto:tylerdauwalder@users.sf.net">Tyler Dauwalder</a> 28 @author Be Inc. 29 @version 0.0.0 30 */ 31 struct node_ref { 32 node_ref(); 33 node_ref(const node_ref &ref); 34 35 bool operator==(const node_ref &ref) const; 36 bool operator!=(const node_ref &ref) const; 37 node_ref& operator=(const node_ref &ref); 38 39 dev_t device; 40 ino_t node; 41 }; 42 43 44 //--------------------------------------------------------------- 45 // BNode 46 //--------------------------------------------------------------- 47 48 //! A BNode represents a chunk of data in the filesystem. 49 /*! The BNode class provides an interface for manipulating the data and attributes 50 belonging to filesystem entries. The BNode is unaware of the name that refers 51 to it in the filesystem (i.e. its entry); a BNode is solely concerned with 52 the entry's data and attributes. 53 54 55 @author <a href='mailto:tylerdauwalder@users.sf.net'>Tyler Dauwalder</a> 56 @version 0.0.0 57 58 */ 59 class BNode : public BStatable { 60 public: 61 62 BNode(); 63 BNode(const entry_ref *ref); 64 BNode(const BEntry *entry); 65 BNode(const char *path); 66 BNode(const BDirectory *dir, const char *path); 67 BNode(const BNode &node); 68 virtual ~BNode(); 69 70 status_t InitCheck() const; 71 72 virtual status_t GetStat(struct stat *st) const; 73 74 status_t SetTo(const entry_ref *ref); 75 status_t SetTo(const BEntry *entry); 76 status_t SetTo(const char *path); 77 status_t SetTo(const BDirectory *dir, const char *path); 78 void Unset(); 79 80 status_t Lock(); 81 status_t Unlock(); 82 83 status_t Sync(); 84 85 ssize_t WriteAttr(const char *name, type_code type, off_t offset, 86 const void *buffer, size_t len); 87 ssize_t ReadAttr(const char *name, type_code type, off_t offset, 88 void *buffer, size_t len) const; 89 status_t RemoveAttr(const char *name); 90 status_t RenameAttr(const char *oldname, const char *newname); 91 status_t GetAttrInfo(const char *name, struct attr_info *info) const; 92 status_t GetNextAttrName(char *buffer); 93 status_t RewindAttrs(); 94 status_t WriteAttrString(const char *name, const BString *data); 95 status_t ReadAttrString(const char *name, BString *result) const; 96 97 BNode& operator=(const BNode &node); 98 bool operator==(const BNode &node) const; 99 bool operator!=(const BNode &node) const; 100 101 int Dup(); // This should be "const" but R5's is not... Ugggh. 102 103 private: 104 friend class BFile; 105 friend class BDirectory; 106 friend class BSymLink; 107 108 virtual void _RudeNode1(); 109 virtual void _RudeNode2(); 110 virtual void _RudeNode3(); 111 virtual void _RudeNode4(); 112 virtual void _RudeNode5(); 113 virtual void _RudeNode6(); 114 115 uint32 rudeData[4]; 116 117 private: 118 status_t set_fd(BPrivate::Storage::FileDescriptor fd); 119 virtual void close_fd(); 120 void set_status(status_t newStatus); 121 122 virtual status_t set_stat(struct stat &st, uint32 what); 123 124 BPrivate::Storage::FileDescriptor fFd; 125 BPrivate::Storage::FileDescriptor fAttrFd; 126 status_t fCStatus; 127 128 status_t InitAttrDir(); 129 }; 130 131 132 133 #ifdef USE_OPENBEOS_NAMESPACE 134 }; // namespace OpenBeOS 135 #endif 136 137 #endif // _NODE_H 138 139 140