/* Copyright (C) 2008  Emmanuel Varoquaux

   This file is part of XOS.

   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 3 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, see <http://www.gnu.org/licenses/>. */

#ifndef VFAT_INSTANCE_STRUCT_H
#define VFAT_INSTANCE_STRUCT_H

#include "vfat_fat_info_struct.h"
#include "vfat_cluster_set_struct.h"
#include "vfat_lock_struct.h"

#include <mutex_struct.h>

/* instance de systeme de fichiers FAT */
struct vfat_instance_struct {
  const struct device_struct *device;

  /* secteur de boot */
  struct vfat_fat_info_struct fat_info; /* cache sur le secteur de boot du disque */

  /* clusters */
  struct mutex_struct alloc_mutex; /* mutex pour l'allocation de clusters */
  struct vfat_cluster_info_struct *free_cluster_table;
  unsigned int free_cluster_table_size;
  struct vfat_cluster_set_struct free_cluster_set; /* liste de clusters libres */
  unsigned long next_free;
  unsigned long last_free;

  /* verrous */
  struct vfat_lock_struct *lock_table;
  unsigned int lock_table_size;
  struct vfat_lock_pool_struct lock_pool; /* table de verrous */

  /* indicateurs */
  unsigned read_only : 1; /* lecture seule */
  unsigned error : 1; /* indicateur d'erreur */

  /* valeurs precalculees */
  int log_sec_size;
  int log_blk_size;
  unsigned long clus_size;
  int log_clus_size;
  int mirror;
  int active_fat;
  unsigned long file_blk_size;
};

#endif