1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 #include <sys/systm.h>
28 #include <sys/cmn_err.h>
29 #include <sys/kobj.h>
30 #include <sys/kobj_impl.h>
31 #include <zlib.h>
32
33 struct zchdr {
34 uint_t zch_magic;
35 uint_t zch_size;
36 };
37
38 #define ZCH_MAGIC 0x3cc13cc1
39
40 void *
zcalloc(void * opaque __unused,uint_t items,uint_t size)41 zcalloc(void *opaque __unused, uint_t items, uint_t size)
42 {
43 size_t nbytes = sizeof (struct zchdr) + items * size;
44 struct zchdr *z = kobj_zalloc(nbytes, KM_NOWAIT|KM_TMP);
45
46 if (z == NULL)
47 return (NULL);
48
49 z->zch_magic = ZCH_MAGIC;
50 z->zch_size = nbytes;
51
52 return (z + 1);
53 }
54
55 void
zcfree(void * opaque __unused,void * ptr)56 zcfree(void *opaque __unused, void *ptr)
57 {
58 struct zchdr *z = ((struct zchdr *)ptr) - 1;
59
60 if (z->zch_magic != ZCH_MAGIC)
61 panic("zcfree region corrupt: hdr=%p ptr=%p", (void *)z, ptr);
62
63 kobj_free(z, z->zch_size);
64 }
65