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/*
* 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 "qemu-common.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;
}
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