/* * DMG bzip2 uncompression * * Copyright (c) 2004 Johannes E. Schindelin * Copyright (c) 2016 Red Hat, Inc. * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #include "qemu/osdep.h" #include "dmg.h" #include <bzlib.h> static int dmg_uncompress_bz2_do(char *next_in, unsigned int avail_in, char *next_out, unsigned int avail_out) { int ret; uint64_t total_out; bz_stream bzstream = {}; ret = BZ2_bzDecompressInit(&bzstream, 0, 0); if (ret != BZ_OK) { return -1; } bzstream.next_in = next_in; bzstream.avail_in = avail_in; bzstream.next_out = next_out; bzstream.avail_out = avail_out; ret = BZ2_bzDecompress(&bzstream); total_out = ((uint64_t)bzstream.total_out_hi32 << 32) + bzstream.total_out_lo32; BZ2_bzDecompressEnd(&bzstream); if (ret != BZ_STREAM_END || total_out != avail_out) { return -1; } return 0; } __attribute__((constructor)) static void dmg_bz2_init(void) { assert(!dmg_uncompress_bz2); dmg_uncompress_bz2 = dmg_uncompress_bz2_do; }