2 * Copyright (c) 2004 Max Khon
3 * Copyright (c) 2014 Juniper Networks, Inc.
4 * Copyright (c) 2006-2016 Maxim Sobolev <sobomax@FreeBSD.org>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
32 #include <sys/types.h>
33 #include <sys/systm.h>
34 #include <sys/malloc.h>
38 #include <geom/uzip/g_uzip.h>
39 #include <geom/uzip/g_uzip_dapi.h>
40 #include <geom/uzip/g_uzip_zlib.h>
44 struct g_uzip_dapi pub;
45 /* Zlib decoder structs */
49 static void *z_alloc(void *, u_int, u_int);
50 static void z_free(void *, void *);
51 static int g_uzip_zlib_rewind(struct g_uzip_dapi *, const char *);
54 g_uzip_zlib_free(struct g_uzip_dapi *zpp)
56 struct g_uzip_zlib *zp;
58 zp = (struct g_uzip_zlib *)zpp->pvt;
60 free(zp, M_GEOM_UZIP);
64 g_uzip_zlib_decompress(struct g_uzip_dapi *zpp, const char *gp_name, void *ibp,
65 size_t ilen, void *obp)
68 struct g_uzip_zlib *zp;
70 zp = (struct g_uzip_zlib *)zpp->pvt;
73 zp->zs.avail_in = ilen;
74 zp->zs.next_out = obp;
75 zp->zs.avail_out = zp->blksz;
77 err = (inflate(&zp->zs, Z_FINISH) != Z_STREAM_END) ? 1 : 0;
79 printf("%s: UZIP(zlib) inflate() failed\n", gp_name);
85 g_uzip_zlib_rewind(struct g_uzip_dapi *zpp, const char *gp_name)
88 struct g_uzip_zlib *zp;
90 zp = (struct g_uzip_zlib *)zpp->pvt;
93 if (inflateReset(&zp->zs) != Z_OK) {
94 printf("%s: UZIP(zlib) decoder reset failed\n", gp_name);
101 z_compressBound(int len)
104 return (len + (len >> 12) + (len >> 14) + 11);
108 g_uzip_zlib_ctor(uint32_t blksz)
110 struct g_uzip_zlib *zp;
112 zp = malloc(sizeof(struct g_uzip_zlib), M_GEOM_UZIP, M_WAITOK);
113 zp->zs.zalloc = z_alloc;
114 zp->zs.zfree = z_free;
115 if (inflateInit(&zp->zs) != Z_OK) {
119 zp->pub.max_blen = z_compressBound(blksz);
120 zp->pub.decompress = &g_uzip_zlib_decompress;
121 zp->pub.free = &g_uzip_zlib_free;
122 zp->pub.rewind = &g_uzip_zlib_rewind;
123 zp->pub.pvt = (void *)zp;
126 free(zp, M_GEOM_UZIP);
131 z_alloc(void *nil, u_int type, u_int size)
135 ptr = malloc(type * size, M_GEOM_UZIP, M_NOWAIT);
141 z_free(void *nil, void *ptr)
144 free(ptr, M_GEOM_UZIP);