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 typedef int BdrvDmgUncompressFunc(char *next_in, unsigned int avail_in, 55 char *next_out, unsigned int avail_out); 56 57 extern BdrvDmgUncompressFunc *dmg_uncompress_bz2; 58 extern BdrvDmgUncompressFunc *dmg_uncompress_lzfse; 59 60 #endif 61