projects / mirror_qemu.git / blame
| Commit | Line | Data |
|---|---|---|
| 27685a8d FZ |
1 | /* |
| 2 | * DMG bzip2 uncompression | |
| 3 | * | |
| 4 | * Copyright (c) 2004 Johannes E. Schindelin | |
| 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 | #include "qemu/osdep.h" | |
| 27685a8d FZ |
26 | #include "dmg.h" |
| 27 | #include <bzlib.h> | |
| 28 | ||
| 29 | static int dmg_uncompress_bz2_do(char *next_in, unsigned int avail_in, | |
| 30 | char *next_out, unsigned int avail_out) | |
| 31 | { | |
| 32 | int ret; | |
| 33 | uint64_t total_out; | |
| 34 | bz_stream bzstream = {}; | |
| 35 | ||
| 36 | ret = BZ2_bzDecompressInit(&bzstream, 0, 0); | |
| 37 | if (ret != BZ_OK) { | |
| 38 | return -1; | |
| 39 | } | |
| 40 | bzstream.next_in = next_in; | |
| 41 | bzstream.avail_in = avail_in; | |
| 42 | bzstream.next_out = next_out; | |
| 43 | bzstream.avail_out = avail_out; | |
| 44 | ret = BZ2_bzDecompress(&bzstream); | |
| 45 | total_out = ((uint64_t)bzstream.total_out_hi32 << 32) + | |
| 46 | bzstream.total_out_lo32; | |
| 47 | BZ2_bzDecompressEnd(&bzstream); | |
| 48 | if (ret != BZ_STREAM_END || | |
| 49 | total_out != avail_out) { | |
| 50 | return -1; | |
| 51 | } | |
| 52 | return 0; | |
| 53 | } | |
| 54 | ||
| 55 | __attribute__((constructor)) | |
| 56 | static void dmg_bz2_init(void) | |
| 57 | { | |
| 58 | assert(!dmg_uncompress_bz2); | |
| 59 | dmg_uncompress_bz2 = dmg_uncompress_bz2_do; | |
| 60 | } |