usr/src/cmd/dtrace/test/tst/common/safety/tst.copyin.d

   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 2006 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 /*
  28  * Copyright (c) 2012 by Delphix. All rights reserved.
  29  */
  30
  31 /*
  32  * ASSERTION:
  33  *   We set our buffer size absurdly low to prevent a flood of errors that we
  34  *   don't care about.  We set our statusrate to be infinitely short to cause
  35  *   lots of activity by the DTrace process.
  36  *
  37  * SECTION: Actions and Subroutines/copyin();
  38  *      Options and Tunables/bufsize;
  39  *      Options and Tunables/bufpolicy;
  40  *      Options and Tunables/statusrate
  41  */
  42
  43
  44 #pragma D option bufsize=32
  45 #pragma D option bufpolicy=ring
  46 #pragma D option statusrate=1nsec
  47
  48 syscall:::entry
  49 {
  50         n++;
  51         trace(copyin(rand(), 1));
  52 }
  53
  54 syscall:::entry
  55 {
  56         trace(copyin(rand() | 1, 1));
  57 }
  58
  59 syscall:::entry
  60 {
  61         trace(copyin(NULL, 1));
  62 }
  63
  64 dtrace:::ERROR
  65 {
  66         err++;
  67 }
  68
  69 tick-1sec
  70 /sec++ == 10/
  71 {
  72         exit(2);
  73 }
  74
  75 END
  76 /n == 0 || err == 0/
  77 {
  78         exit(1);
  79 }
  80
  81 END
  82 /n != 0 && err != 0/
  83 {
  84         exit(0);
  85 }