2 * Copyright (c) 2004-2016 Maxim Sobolev <sobomax@FreeBSD.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
30 #include <sys/param.h>
37 #include "mkuz_zlib.h"
46 mkuz_zlib_init(uint32_t blksz)
50 if (blksz % DEV_BSIZE != 0) {
51 errx(1, "cluster size should be multiple of %d",
55 if (compressBound(blksz) > MAXPHYS) {
56 errx(1, "cluster size is too large");
59 zp = mkuz_safe_zmalloc(sizeof(struct mkuz_zlib));
60 zp->oblen = compressBound(blksz);
67 mkuz_zlib_compress(void *p, const struct mkuz_blk *iblk)
70 struct mkuz_blk *rval;
73 zp = (struct mkuz_zlib *)p;
75 rval = mkuz_blk_ctor(zp->oblen);
77 destlen_z = rval->alen;
78 if (compress2(rval->data, &destlen_z, iblk->data, zp->blksz,
79 Z_BEST_COMPRESSION) != Z_OK) {
80 errx(1, "can't compress data: compress2() "
85 rval->info.len = (uint32_t)destlen_z;