LXR uboot/fs/fdos/fdos.h

   1/*
   2 * (C) Copyright 2002
   3 * Stäubli Faverges - <www.staubli.com>
   4 * Pierre AUBERT  p.aubert@staubli.com
   5 *
   6 * See file CREDITS for list of people who contributed to this
   7 * project.
   8 *
   9 * This program is free software; you can redistribute it and/or
  10 * modify it under the terms of the GNU General Public License as
  11 * published by the Free Software Foundation; either version 2 of
  12 * the License, or (at your option) any later version.
  13 *
  14 * This program is distributed in the hope that it will be useful,
  15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 * GNU General Public License for more details.
  18 *
  19 * You should have received a copy of the GNU General Public License
  20 * along with this program; if not, write to the Free Software
  21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  22 * MA 02111-1307 USA
  23 */
  24
  25#ifndef _FDOS_H_
  26#define _FDOS_H_
  27
  28
  29#undef  FDOS_DEBUG
  30
  31#ifdef  FDOS_DEBUG
  32#define PRINTF(fmt,args...)     printf (fmt ,##args)
  33#else
  34#define PRINTF(fmt,args...)
  35#endif
  36
  37/* Data structure describing media                                           */
  38typedef struct fs
  39{
  40    unsigned long       tot_sectors;
  41
  42    int                 cluster_size;
  43    int                 num_clus;
  44
  45    int                 fat_start;
  46    int                 fat_len;
  47    int                 nb_fat;
  48    int                 num_fat;
  49
  50    int                 dir_start;
  51    int                 dir_len;
  52
  53    unsigned char       *fat_buf;
  54
  55} Fs_t;
  56
  57/* Data structure describing one file system slot                            */
  58typedef struct slot {
  59    int (*map) (struct fs *fs,
  60                struct slot *file,
  61                int where,
  62                int *len);
  63    unsigned long FileSize;
  64
  65    unsigned short int FirstAbsCluNr;
  66    unsigned short int PreviousAbsCluNr;
  67    unsigned short int PreviousRelCluNr;
  68
  69    Directory_t dir;
  70} Slot_t;
  71
  72typedef struct file {
  73    char                *name;
  74    int                 Case;
  75    Fs_t                *fs;
  76    Slot_t              subdir;
  77    Slot_t              file;
  78} File_t;
  79
  80
  81/* dev.c                                                                     */
  82int dev_read (void *buffer, int where, int len);
  83int dev_open (void);
  84int check_dev (BootSector_t *boot, Fs_t *fs);
  85
  86/* fat.c                                                                     */
  87unsigned int fat_decode (Fs_t *fs, unsigned int num);
  88int read_fat (BootSector_t *boot, Fs_t *fs);
  89
  90/* vfat.c                                                                    */
  91int vfat_lookup (Slot_t *dir,
  92                 Fs_t *fs,
  93                 Directory_t *dirent,
  94                 int *entry,
  95                 int *vfat_start,
  96                 char *filename,
  97                 int flags,
  98                 char *outname,
  99                 Slot_t *file);
 100
 101/* subdir.c                                                                  */
 102char *basename (char *name);
 103int open_subdir (File_t *desc);
 104int open_file (Slot_t *file, Directory_t *dir);
 105int read_file (Fs_t *fs,
 106               Slot_t *file,
 107               char *buf,
 108               int where,
 109               int len);
 110void init_subdir (void);
 111
 112/* fs.c                                                                      */
 113int fs_init (Fs_t *fs);
 114
 115
 116#endif
 117