usr/src/cmd/dtrace/test/tst/common/mdb/tst.dtracedcmd.ksh

   1 #!/bin/ksh -p
   2 #
   3 # CDDL HEADER START
   4 #
   5 # The contents of this file are subject to the terms of the
   6 # Common Development and Distribution License (the "License").
   7 # You may not use this file except in compliance with the License.
   8 #
   9 # You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10 # or http://www.opensolaris.org/os/licensing.
  11 # See the License for the specific language governing permissions
  12 # and limitations under the License.
  13 #
  14 # When distributing Covered Code, include this CDDL HEADER in each
  15 # file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16 # If applicable, add the following below this CDDL HEADER, with the
  17 # fields enclosed by brackets "[]" replaced with your own identifying
  18 # information: Portions Copyright [yyyy] [name of copyright owner]
  19 #
  20 # CDDL HEADER END
  21 #
  22
  23 #
  24 # Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
  25 # Use is subject to license terms.
  26 #
  27
  28 #
  29 # This script primarily tests that the ::dtrace dcmd is not dumping
  30 # core. We don't try to make sense of the output of the dcmd nor
  31 # do we check to see if any output is produced. We merely see if
  32 # mdb fails with a fatal failure.
  33 #
  34
  35 script()
  36 {
  37         exec $dtrace -o $dtraceout -s /dev/stdin <<EOF
  38         syscall:::entry
  39         {
  40                 @[probefunc] = count();
  41         }
  42 EOF
  43 }
  44
  45 mdbdoit()
  46 {
  47         mdb -k <<EOF
  48         ::walk dtrace_state | ::dtrace
  49 EOF
  50         status=$?
  51         kill $script
  52 }
  53
  54 if [ $# != 1 ]; then
  55         echo expected one argument: '<'dtrace-path'>'
  56         exit 2
  57 fi
  58
  59 dtrace=$1
  60 dtraceout=/tmp/dtrace.out.$$
  61 script &
  62 script=$!
  63 timeout=15
  64
  65 #
  66 # Sleep while the above script fires into life. To guard against dtrace dying
  67 # and us sleeping forever we allow 15 secs for this to happen. This should be
  68 # enough for even the slowest systems.
  69 #
  70 while [ ! -f $dtraceout ]; do
  71         sleep 1
  72         timeout=$(($timeout-1))
  73         if [ $timeout -eq 0 ]; then
  74                 echo "dtrace failed to start. Exiting."
  75                 exit 1
  76         fi
  77 done
  78
  79 mdbdoit
  80
  81 rm $dtraceout
  82
  83 exit $status