usr/src/cmd/dtrace/test/tst/i386/funcs/tst.badcopyinstr.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 #pragma ident   "%Z%%M% %I%     %E% SMI"
  28
  29 /*
  30  * ASSERTION:
  31  *      On IA/32, there is a single 32-bit address space that is partitioned
  32  *      between user-level and kernel-level.  copyin()/copyinstr() and
  33  *      copyout()/copyoutstr() must check that addresses specified as
  34  *      user-level addresses are actually at user-level.  This test attempts
  35  *      to perform an illegal copyinstr() from a kernel address.  It asserts
  36  *      that the fault type is DTRACEFLT_BADADDR and that the bad address is
  37  *      set to the kernel address from which the copyinstr() was attempted.
  38  *
  39  * SECTION: Actions and Subroutines/copyinstr();
  40  *      User Process Tracing/copyin() and copyinstr()
  41  */
  42
  43 BEGIN
  44 {
  45         os = copyinstr((uintptr_t)&`utsname);
  46         exit(1);
  47 }
  48
  49 ERROR
  50 {
  51         exit(arg4 == DTRACEFLT_BADADDR && arg5 == (uint64_t)&`utsname ? 0 : 1);
  52 }