1 /* 2 * DMG lzfse uncompression 3 * 4 * Copyright (c) 2018 Julio Cesar Faracco 5 * 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: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 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. 23 */ 24 #include "qemu/osdep.h" 25 #include "qemu-common.h" 26 #include "dmg.h" 27 #include <lzfse.h> 28 29 static int dmg_uncompress_lzfse_do(char *next_in, unsigned int avail_in, 30 char *next_out, unsigned int avail_out) 31 { 32 size_t out_size = lzfse_decode_buffer((uint8_t *) next_out, avail_out, 33 (uint8_t *) next_in, avail_in, 34 NULL); 35 36 /* We need to decode the single chunk only. */ 37 /* So, out_size == avail_out is not an error here. */ 38 if (out_size > 0) { 39 return out_size; 40 } 41 return -1; 42 } 43 44 __attribute__((constructor)) 45 static void dmg_lzfse_init(void) 46 { 47 assert(!dmg_uncompress_lzfse); 48 dmg_uncompress_lzfse = dmg_uncompress_lzfse_do; 49 } 50