usr/src/cmd/dtrace/test/tst/i386/funcs/tst.badcopyin.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 2009 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 /*
  28  * ASSERTION:
  29  *      On IA/32, there is a single 32-bit address space that is partitioned
  30  *      between user-level and kernel-level.  copyin()/copyinstr() and
  31  *      copyout()/copyoutstr() must check that addresses specified as
  32  *      user-level addresses are actually at user-level.  This test attempts
  33  *      to perform an illegal copyin() from a kernel address.  It asserts that
  34  *      the fault type is DTRACEFLT_BADADDR and that the bad address is set to
  35  *      the kernel address from which the copyin() was attempted.
  36  *
  37  * SECTION: Actions and Subroutines/copyin();
  38  *      Actions and Subroutines/copyin();
  39  *      User Process Tracing/copyin() and copyinstr()
  40  */
  41
  42 BEGIN
  43 {
  44         dtrace_zero = copyin((uintptr_t)&`dtrace_zero, sizeof (int));
  45         exit(1);
  46 }
  47
  48 ERROR
  49 {
  50         exit(arg4 == DTRACEFLT_BADADDR &&
  51             arg5 == (uint64_t)&`dtrace_zero ? 0 : 1);
  52 }