1 | /* |
2 | * Header for DMG driver |
3 | * |
4 | * Copyright (c) 2004-2006 Fabrice Bellard |
5 | * Copyright (c) 2016 Red hat, Inc. |
6 | * |
7 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
8 | * of this software and associated documentation files (the "Software"), to deal |
9 | * in the Software without restriction, including without limitation the rights |
10 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
11 | * copies of the Software, and to permit persons to whom the Software is |
12 | * furnished to do so, subject to the following conditions: |
13 | * |
14 | * The above copyright notice and this permission notice shall be included in |
15 | * all copies or substantial portions of the Software. |
16 | * |
17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
18 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
20 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
21 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
22 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
23 | * THE SOFTWARE. |
24 | */ |
25 | |
26 | #ifndef BLOCK_DMG_H |
27 | #define BLOCK_DMG_H |
28 | |
29 | #include "block/block_int.h" |
30 | #include <zlib.h> |
31 | |
32 | typedef struct BDRVDMGState { |
33 | CoMutex lock; |
34 | /* each chunk contains a certain number of sectors, |
35 | * offsets[i] is the offset in the .dmg file, |
36 | * lengths[i] is the length of the compressed chunk, |
37 | * sectors[i] is the sector beginning at offsets[i], |
38 | * sectorcounts[i] is the number of sectors in that chunk, |
39 | * the sectors array is ordered |
40 | * 0<=i<n_chunks */ |
41 | |
42 | uint32_t n_chunks; |
43 | uint32_t *types; |
44 | uint64_t *offsets; |
45 | uint64_t *lengths; |
46 | uint64_t *sectors; |
47 | uint64_t *sectorcounts; |
48 | uint32_t current_chunk; |
49 | uint8_t *compressed_chunk; |
50 | uint8_t *uncompressed_chunk; |
51 | z_stream zstream; |
52 | } BDRVDMGState; |
53 | |
54 | extern int (*dmg_uncompress_bz2)(char *next_in, unsigned int avail_in, |
55 | char *next_out, unsigned int avail_out); |
56 | |
57 | extern int (*dmg_uncompress_lzfse)(char *next_in, unsigned int avail_in, |
58 | char *next_out, unsigned int avail_out); |
59 | |
60 | #endif |
61 | |