LXR qemu/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 "block/block_int.h"
  30#include <zlib.h>
  31
  32typedef 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
  54extern int (*dmg_uncompress_bz2)(char *next_in, unsigned int avail_in,
  55                                 char *next_out, unsigned int avail_out);
  56
  57extern int (*dmg_uncompress_lzfse)(char *next_in, unsigned int avail_in,
  58                                   char *next_out, unsigned int avail_out);
  59
  60#endif
  61