kernel/zmod/zmod_subr.c

   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 }