1 /* $NetBSD: unbzip2.c,v 1.11 2008/04/28 20:24:13 martin Exp $ */
2 /* $DragonFly: src/usr.bin/gzip/unbzip2.c,v 1.1 2004/10/26 11:19:31 joerg Exp $ */
5 * Copyright (c) 2006 The NetBSD Foundation, Inc.
8 * This code is derived from software contributed to The NetBSD Foundation
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
33 /* This file is #included by gzip.c */
36 unbzip2(int in, int out, char *pre, size_t prelen, off_t *bytes_in)
41 static char *inbuf, *outbuf;
44 inbuf = malloc(BUFLEN);
46 outbuf = malloc(BUFLEN);
47 if (inbuf == NULL || outbuf == NULL)
55 ret = BZ2_bzDecompressInit(&bzs, 0, 0);
57 maybe_errx("bzip2 init");
60 bzs.avail_in = prelen;
66 while (ret >= BZ_OK && ret != BZ_STREAM_END) {
67 if (bzs.avail_in == 0 && !end_of_file) {
70 n = read(in, inbuf, BUFLEN);
81 bzs.next_out = outbuf;
82 bzs.avail_out = BUFLEN;
83 ret = BZ2_bzDecompress(&bzs);
88 if (ret == BZ_OK && end_of_file)
93 n = write(out, outbuf, BUFLEN - bzs.avail_out);
101 maybe_warnx("bzip2 data integrity error");
104 case BZ_DATA_ERROR_MAGIC:
105 maybe_warnx("bzip2 magic number error");
109 maybe_warnx("bzip2 out of memory");
115 if (ret != BZ_STREAM_END || BZ2_bzDecompressEnd(&bzs) != BZ_OK)