kernel/syscall/uucopy.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  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26 #pragma ident   "%Z%%M% %I%     %E% SMI"
  27
  28 #include <sys/systm.h>
  29
  30 int
  31 uucopy(const void *from, void *to, size_t size)
  32 {
  33         label_t ljb;
  34
  35         if (on_fault(&ljb))
  36                 return (set_errno(EFAULT));
  37
  38         ucopy(from, to, size);
  39
  40         no_fault();
  41
  42         return (0);
  43 }
  44
  45 ssize_t
  46 uucopystr(const char *from, char *to, size_t size)
  47 {
  48         label_t ljb;
  49         size_t len;
  50
  51         if (on_fault(&ljb))
  52                 return (set_errno(EFAULT));
  53
  54         ucopystr(from, to, size, &len);
  55
  56         no_fault();
  57
  58         return ((ssize_t)len);
  59 }