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      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	"@(#)zmod_subr.c	1.1	07/03/22 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