| wdenk | 591dda5 | 2002-11-18 00:14:45 +0000 | [diff] [blame^] | 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 */ |
| 38 | typedef 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 */ |
| 58 | typedef 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 | |
| 72 | typedef 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 */ |
| 82 | int dev_read (void *buffer, int where, int len); |
| 83 | int dev_open (void); |
| 84 | int check_dev (BootSector_t *boot, Fs_t *fs); |
| 85 | |
| 86 | /* fat.c */ |
| 87 | unsigned int fat_decode (Fs_t *fs, unsigned int num); |
| 88 | int read_fat (BootSector_t *boot, Fs_t *fs); |
| 89 | |
| 90 | /* vfat.c */ |
| 91 | int 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 */ |
| 102 | char *basename (char *name); |
| 103 | int open_subdir (File_t *desc); |
| 104 | int open_file (Slot_t *file, Directory_t *dir); |
| 105 | int read_file (Fs_t *fs, |
| 106 | Slot_t *file, |
| 107 | char *buf, |
| 108 | int where, |
| 109 | int len); |
| 110 | void init_subdir (void); |
| 111 | |
| 112 | /* fs.c */ |
| 113 | int fs_init (Fs_t *fs); |
| 114 | |
| 115 | |
| 116 | #endif |
| 117 | |