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