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 25 struct 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 31 enum fat_type { 32 FAT12, 33 FAT16, 34 FAT28 35 }; 36 37 struct 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
