Merge remote-tracking branch 'remotes/kraxel/tags/pull-vga-20170103-1' into staging
[qemu.git] / block / dmg.h
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 "qemu/osdep.h"
30 #include "qemu-common.h"
31 #include "block/block_int.h"
32 #include <zlib.h>
33
34 typedef struct BDRVDMGState {
35 CoMutex lock;
36 /* each chunk contains a certain number of sectors,
37 * offsets[i] is the offset in the .dmg file,
38 * lengths[i] is the length of the compressed chunk,
39 * sectors[i] is the sector beginning at offsets[i],
40 * sectorcounts[i] is the number of sectors in that chunk,
41 * the sectors array is ordered
42 * 0<=i<n_chunks */
43
44 uint32_t n_chunks;
45 uint32_t *types;
46 uint64_t *offsets;
47 uint64_t *lengths;
48 uint64_t *sectors;
49 uint64_t *sectorcounts;
50 uint32_t current_chunk;
51 uint8_t *compressed_chunk;
52 uint8_t *uncompressed_chunk;
53 z_stream zstream;
54 } BDRVDMGState;
55
56 extern int (*dmg_uncompress_bz2)(char *next_in, unsigned int avail_in,
57 char *next_out, unsigned int avail_out);
58
59 #endif