Merge tag 'v9.0.0-rc3'
[qemu/ar7.git] / block / dmg-lzfse.c
blob4ea0b9b20da9c89900e43016b1b3a1a18f3448ec
1 /*
2 * DMG lzfse uncompression
4 * Copyright (c) 2018 Julio Cesar Faracco
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
24 #include "qemu/osdep.h"
25 #include "dmg.h"
27 /* Work around a -Wstrict-prototypes warning in LZFSE headers */
28 #pragma GCC diagnostic push
29 #pragma GCC diagnostic ignored "-Wstrict-prototypes"
30 #include <lzfse.h>
31 #pragma GCC diagnostic pop
33 static int dmg_uncompress_lzfse_do(char *next_in, unsigned int avail_in,
34 char *next_out, unsigned int avail_out)
36 size_t out_size = lzfse_decode_buffer((uint8_t *) next_out, avail_out,
37 (uint8_t *) next_in, avail_in,
38 NULL);
40 /* We need to decode the single chunk only. */
41 /* So, out_size == avail_out is not an error here. */
42 if (out_size > 0) {
43 return out_size;
45 return -1;
48 __attribute__((constructor))
49 static void dmg_lzfse_init(void)
51 assert(!dmg_uncompress_lzfse);
52 dmg_uncompress_lzfse = dmg_uncompress_lzfse_do;