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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	"%Z%%M%	%I%	%E% SMI"
     28 
     29 #include <sys/systm.h>
     30 #include <sys/cmn_err.h>
     31 #include <sys/kobj.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 *
     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
     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
     69 zmemcpy(void *dest, const void *source, uint_t len)
     70 {
     71 	bcopy(source, dest, len);
     72 }
     73 
     74 int
     75 zmemcmp(const void *s1, const void *s2, uint_t len)
     76 {
     77 	return (bcmp(s1, s2, len));
     78 }
     79 
     80 void
     81 zmemzero(void *dest, uint_t len)
     82 {
     83 	bzero(dest, len);
     84 }
     85