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