1/* ----------------------------------------------------------------------- *
2 *
3 *   Copyright 2004-2008 H. Peter Anvin - All Rights Reserved
4 *
5 *   This program is free software; you can redistribute it and/or modify
6 *   it under the terms of the GNU General Public License as published by
7 *   the Free Software Foundation, Inc., 53 Temple Place Ste 330,
8 *   Boston MA 02111-1307, USA; either version 2 of the License, or
9 *   (at your option) any later version; incorporated herein by reference.
10 *
11 * ----------------------------------------------------------------------- */
12
13/*
14 * libfatint.h
15 *
16 * Internals for the libfat filesystem
17 */
18
19#ifndef LIBFATINT_H
20#define LIBFATINT_H
21
22#include "libfat.h"
23#include "fat.h"
24
25struct libfat_sector {
26    libfat_sector_t n;		/* Sector number */
27    struct libfat_sector *next;	/* Next in list */
28    char data[LIBFAT_SECTOR_SIZE];
29};
30
31enum fat_type {
32    FAT12,
33    FAT16,
34    FAT28
35};
36
37struct libfat_filesystem {
38    int (*read) (intptr_t, void *, size_t, libfat_sector_t);
39    intptr_t readptr;
40
41    enum fat_type fat_type;
42    unsigned int clustsize;
43    int clustshift;
44    int32_t endcluster;		/* Highest legal cluster number + 1 */
45    int32_t rootcluster;	/* Root directory cluster */
46
47    libfat_sector_t fat;	/* Start of FAT */
48    libfat_sector_t rootdir;	/* Start of root directory */
49    libfat_sector_t data;	/* Start of data area */
50    libfat_sector_t end;	/* End of filesystem */
51
52    struct libfat_sector *sectors;
53};
54
55#endif /* LIBFATINT_H */
56