qemu/block/dmg.h
Philippe Mathieu-Daudé fdd5e90fdb block/dmg: Declare a type definition for DMG uncompress function
Introduce the BdrvDmgUncompressFunc type defintion. To emphasis
dmg_uncompress_bz2 and dmg_uncompress_lzfse are pointer to functions,
declare them using this new typedef.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20230320152610.32052-1-philmd@linaro.org
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2023-04-24 13:53:44 -04:00

61 lines
2.1 KiB
C

/*
* Header for DMG driver
*
* Copyright (c) 2004-2006 Fabrice Bellard
* Copyright (c) 2016 Red hat, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef BLOCK_DMG_H
#define BLOCK_DMG_H
#include "block/block_int.h"
#include <zlib.h>
typedef struct BDRVDMGState {
CoMutex lock;
/* each chunk contains a certain number of sectors,
* offsets[i] is the offset in the .dmg file,
* lengths[i] is the length of the compressed chunk,
* sectors[i] is the sector beginning at offsets[i],
* sectorcounts[i] is the number of sectors in that chunk,
* the sectors array is ordered
* 0<=i<n_chunks */
uint32_t n_chunks;
uint32_t *types;
uint64_t *offsets;
uint64_t *lengths;
uint64_t *sectors;
uint64_t *sectorcounts;
uint32_t current_chunk;
uint8_t *compressed_chunk;
uint8_t *uncompressed_chunk;
z_stream zstream;
} BDRVDMGState;
typedef int BdrvDmgUncompressFunc(char *next_in, unsigned int avail_in,
char *next_out, unsigned int avail_out);
extern BdrvDmgUncompressFunc *dmg_uncompress_bz2;
extern BdrvDmgUncompressFunc *dmg_uncompress_lzfse;
#endif