xref: /illumos-gate/usr/src/uts/common/zmod/zmod_subr.c (revision e616c49c963c6536f26b6d8888bc4bbb54716901)
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 /*ARGSUSED*/
41 void *
zcalloc(void * opaque,uint_t items,uint_t size)42 zcalloc(void *opaque, uint_t items, uint_t size)
43 {
44 	size_t nbytes = sizeof (struct zchdr) + items * size;
45 	struct zchdr *z = kobj_zalloc(nbytes, KM_NOWAIT|KM_TMP);
46 
47 	if (z == NULL)
48 		return (NULL);
49 
50 	z->zch_magic = ZCH_MAGIC;
51 	z->zch_size = nbytes;
52 
53 	return (z + 1);
54 }
55 
56 /*ARGSUSED*/
57 void
zcfree(void * opaque,void * ptr)58 zcfree(void *opaque, void *ptr)
59 {
60 	struct zchdr *z = ((struct zchdr *)ptr) - 1;
61 
62 	if (z->zch_magic != ZCH_MAGIC)
63 		panic("zcfree region corrupt: hdr=%p ptr=%p", (void *)z, ptr);
64 
65 	kobj_free(z, z->zch_size);
66 }
67 
68 void
zmemcpy(void * dest,const void * source,uint_t len)69 zmemcpy(void *dest, const void *source, uint_t len)
70 {
71 	bcopy(source, dest, len);
72 }
73 
74 int
zmemcmp(const void * s1,const void * s2,uint_t len)75 zmemcmp(const void *s1, const void *s2, uint_t len)
76 {
77 	return (bcmp(s1, s2, len));
78 }
79 
80 void
zmemzero(void * dest,uint_t len)81 zmemzero(void *dest, uint_t len)
82 {
83 	bzero(dest, len);
84 }
85