// VNode.h
//
// Copyright (c) 2003, Ingo Weinhold (bonefish@cs.tu-berlin.de)
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
// 
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
// 
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
//
// You can alternatively use *this file* under the terms of the the MIT
// license included in this package.

#ifndef V_NODE_H
#define V_NODE_H

#include <fs_interface.h>

#include "StatItem.h"

class VNode {
public:
        VNode();
        VNode(const VNode &node);
        VNode(ino_t id);
        VNode(uint32 dirID, uint32 objectID);
        ~VNode();

        status_t SetTo(ino_t id);
        status_t SetTo(uint32 dirID, uint32 objectID);

//      void SetParentDirID(uint32 id)          { fParentDirID = id; }
//      uint32 GetParentDirID() const           { return fParentDirID; }
//      void SetParentObjectID(uint32 id)       { fParentObjectID = id; }
//      uint32 GetParentObjectID() const        { return fParentObjectID; }
        void SetDirID(uint32 id)                        { fDirID = id; }
        uint32 GetDirID() const                         { return fDirID; }
        void SetObjectID(uint32 id)                     { fObjectID = id; }
        uint32 GetObjectID() const                      { return fObjectID; }

        ino_t GetID() const;
        void SetParentID(uint32 dirID, uint32 objectID);
        void SetParentID(ino_t id)              { fParentID = id; }
        // only valid for dirs!
        ino_t GetParentID() const               { return fParentID; }

        StatData *GetStatData() { return &fStatData; }
        const StatData *GetStatData() const { return &fStatData; }

        bool IsDir() const { return fStatData.IsDir(); }
        bool IsFile() const { return fStatData.IsFile(); }
        bool IsSymlink() const { return fStatData.IsSymlink(); }
        bool IsEsoteric() const { return fStatData.IsEsoteric(); }

        // vnode ID <-> dir,object ID conversion
        static ino_t GetIDFor(uint32 dirID, uint32 objectID)
                { return (ino_t)((uint64)dirID << 32 | (uint64)objectID); }
        static uint32 GetDirIDFor(ino_t id) { return uint32((uint64)id >> 32); }
        static uint32 GetObjectIDFor(ino_t id)
                { return uint32((uint64)id & 0xffffffffULL); }

        VNode &operator=(const VNode &node);

private:
        ino_t           fParentID;
        uint32          fDirID;
        uint32          fObjectID;
        StatData        fStatData;
};

#endif  // V_NODE_H