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