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47cea614 FB |
1 | /* |
2 | Copyright (C) Matthew Chapman 2003 | |
3 | ||
4 | This program is free software; you can redistribute it and/or modify | |
5 | it under the terms of the GNU General Public License as published by | |
6 | the Free Software Foundation; either version 2 of the License, or | |
7 | (at your option) any later version. | |
8 | ||
9 | This program is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | GNU General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU General Public License | |
15 | along with this program; if not, write to the Free Software | |
16 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
17 | */ | |
18 | ||
19 | #define SECTOR_BITS 9 | |
20 | #define SECTOR_SIZE (1 << SECTOR_BITS) | |
21 | #define SECTOR_MASK (SECTOR_SIZE - 1) | |
22 | ||
23 | #define L1_BITS (SECTOR_BITS - 3) | |
24 | #define L1_SIZE (1 << L1_BITS) | |
25 | #define L1_MASK (L1_SIZE - 1) | |
26 | ||
27 | #define L2_BITS SECTOR_BITS | |
28 | #define L2_SIZE (1 << L2_BITS) | |
29 | #define L2_MASK (L2_SIZE - 1) | |
30 | ||
31 | #define MIN(x,y) (((x) < (y)) ? (x) : (y)) | |
32 | ||
33 | struct cowdisk_header | |
34 | { | |
47cea614 FB |
35 | uint32_t version; |
36 | uint32_t flags; | |
37 | uint32_t disk_sectors; | |
38 | uint32_t granularity; | |
05efe46e | 39 | uint32_t l1dir_offset; |
47cea614 FB |
40 | uint32_t l1dir_size; |
41 | uint32_t file_sectors; | |
42 | uint32_t cylinders; | |
43 | uint32_t heads; | |
44 | uint32_t sectors_per_track; | |
45 | }; | |
46 | ||
47 | struct cowdisk_header2 | |
48 | { | |
49 | uint32_t parent_ts; | |
50 | uint32_t timestamp; | |
51 | }; | |
05efe46e FB |
52 | |
53 | /* based on vdk 3.1 10-11-2003 by Ken Kato */ | |
54 | ||
55 | struct vmdisk_header | |
56 | { | |
57 | uint32_t version; | |
58 | uint32_t flags; | |
59 | ||
60 | int64_t capacity; | |
61 | int64_t granularity; | |
62 | int64_t desc_offset; | |
63 | int64_t desc_size; | |
64 | int32_t num_gtes_per_gte; | |
65 | int64_t rgd_offset; | |
66 | int64_t gd_offset; | |
67 | int64_t grain_offset; | |
68 | ||
69 | char filler[1]; | |
70 | ||
71 | char check_bytes[4]; | |
72 | }; |