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/*
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 * Project: HARTIK (HA-rd R-eal TI-me K-ernel)
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 *
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 * Coordinators: Giorgio Buttazzo <giorgio@sssup.it>
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 *               Gerardo Lamastra <gerardo@sssup.it>
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 *
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 * Authors     : Massimiliano Giorgi <massy@hartik.sssup.it>
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 * (see authors.txt for full list of hartik's authors)
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 *
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 * ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy)
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 *
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 * http://www.sssup.it
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 * http://retis.sssup.it
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 * http://hartik.sssup.it
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 */
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/*
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 * Copyright (C) 1999 Massimiliano Giorgi
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 *
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 * This program is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; either version 2 of the License, or
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 * (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program; if not, write to the Free Software
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 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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 *
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 */
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/*
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 * CVS :        $Id: inode.h,v 1.1.1.1 2002-03-29 14:12:50 pj Exp $
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 *
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 * File:        $File$
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 * Revision:    $Revision: 1.1.1.1 $
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 * Last update: $Date: 2002-03-29 14:12:50 $
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 */
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/***
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 This file defines an inode structure and prototypes the functions used to manipulate that structure.
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 ***/
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#ifndef __INODE_H__
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#define __INODE_H__
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#include <fs/fsconf.h>
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#include <fs/types.h>
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#include <fs/stat.h>
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#include "rwlock.h"
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#ifdef MSDOS_FILESYSTEM
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#include "msdos/msdos_i.h"
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#endif
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struct inode {
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#ifdef _PARANOIA
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  __uint32_t  magic;   /*+ magic number +*/  
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#endif
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  struct stat i_st;
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  struct inode *i_next;
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  struct inode *i_prev;
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  int           i_hash;
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  __rwlock_t i_lock;     /* for read/write on inode's file */
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  __uint16_t i_dlink;   /* quanti dentry puntano a questo? */
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  __uint32_t i_dirty:1;
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  struct inode_operations *i_op;
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  struct super_block      *i_sb;
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  union {
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#ifdef MSDOS_FILESYSTEM
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    struct msdos_inode_info msdos_i;
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#endif
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    unsigned                dummy;
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  } u;
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};
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int inode_init(void);
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struct inode *catch_inode(void);
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void free_inode(struct inode *);
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void insert_inode(struct inode *ptr);
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void unlock_inode(struct inode *ptr);
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int destroy_inode(struct inode *ptr);
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int erase_inode(struct inode *prt);
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#endif