4 # SPDX-License-Identifier: BSD-2-Clause-FreeBSD
6 # Copyright (c) 2021 Peter Holm
8 # Redistribution and use in source and binary forms, with or without
9 # modification, are permitted provided that the following conditions
11 # 1. Redistributions of source code must retain the above copyright
12 # notice, this list of conditions and the following disclaimer.
13 # 2. Redistributions in binary form must reproduce the above copyright
14 # notice, this list of conditions and the following disclaimer in the
15 # documentation and/or other materials provided with the distribution.
17 # THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 # ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 # Trace random cc, c++ or make threads from a buildkernel
31 # Test scenario idea by kib@
33 old=`sysctl -in kern.kill_on_debugger_exit`
34 [ -z "$old" ] && exit 0
35 trap "sysctl kern.kill_on_debugger_exit=$old" EXIT INT
37 # Enable ptrace(2)d processes to continue
38 sysctl kern.kill_on_debugger_exit=0
39 ./buildkernel.sh & kpid=$!
42 rpid=`ps -l | grep -vwE 'grep|RE|defunct' | \
43 grep -E "(cc|c\+\+|make) " | \
44 sort -R | head -1 | awk '{print $2}'`
45 [ -n "$rpid" ] && break
48 [ -z "$rpid" ] && break
49 kill -0 $rpid 2>/dev/null || continue
50 ps -lp $rpid | tail -1
51 echo "truss -f -o /dev/null -p $rpid"
52 truss -f -o /dev/null -p $rpid & tpid=$!