xref: /titanic_44/usr/src/uts/common/zmod/zmod_subr.c (revision f38cb554a534c6df738be3f4d23327e69888e634)
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 #pragma ident	"%Z%%M%	%I%	%E% SMI"
28 
29 #include <sys/systm.h>
30 #include <sys/cmn_err.h>
31 #include <sys/kobj.h>
32 #include <sys/kobj_impl.h>
33 
34 struct zchdr {
35 	uint_t zch_magic;
36 	uint_t zch_size;
37 };
38 
39 #define	ZCH_MAGIC	0x3cc13cc1
40 
41 /*ARGSUSED*/
42 void *
43 zcalloc(void *opaque, uint_t items, uint_t size)
44 {
45 	size_t nbytes = sizeof (struct zchdr) + items * size;
46 	struct zchdr *z = kobj_zalloc(nbytes, KM_NOWAIT|KM_TMP);
47 
48 	if (z == NULL)
49 		return (NULL);
50 
51 	z->zch_magic = ZCH_MAGIC;
52 	z->zch_size = nbytes;
53 
54 	return (z + 1);
55 }
56 
57 /*ARGSUSED*/
58 void
59 zcfree(void *opaque, void *ptr)
60 {
61 	struct zchdr *z = ((struct zchdr *)ptr) - 1;
62 
63 	if (z->zch_magic != ZCH_MAGIC)
64 		panic("zcfree region corrupt: hdr=%p ptr=%p", (void *)z, ptr);
65 
66 	kobj_free(z, z->zch_size);
67 }
68 
69 void
70 zmemcpy(void *dest, const void *source, uint_t len)
71 {
72 	bcopy(source, dest, len);
73 }
74 
75 int
76 zmemcmp(const void *s1, const void *s2, uint_t len)
77 {
78 	return (bcmp(s1, s2, len));
79 }
80 
81 void
82 zmemzero(void *dest, uint_t len)
83 {
84 	bzero(dest, len);
85 }
86