1#!/bin/sh
2#
3# Check decoding of threads when a non-leader thread invokes execve.
4#
5# Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
6# Copyright (c) 2016-2017 The strace developers.
7# All rights reserved.
8#
9# Redistribution and use in source and binary forms, with or without
10# modification, are permitted provided that the following conditions
11# are met:
12# 1. Redistributions of source code must retain the above copyright
13#    notice, this list of conditions and the following disclaimer.
14# 2. Redistributions in binary form must reproduce the above copyright
15#    notice, this list of conditions and the following disclaimer in the
16#    documentation and/or other materials provided with the distribution.
17# 3. The name of the author may not be used to endorse or promote products
18#    derived from this software without specific prior written permission.
19#
20# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
24# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30
31. "${srcdir=.}/init.sh"
32
33# Check that PTRACE_EVENT_EXEC support in kernel is good enough.
34# The kernel before commit v3.1-rc1~308^2~7 reported 0 instead of old pid.
35require_min_kernel_version_or_skip 3.1
36
37check_prog diff
38run_prog > /dev/null
39
40set -- -a21 -f -esignal=none -e trace=execve,exit,nanosleep,rt_sigsuspend $args
41
42# Due to probabilistic nature of the test, try it several times.
43i=0
44while [ $i -le 19 ]; do
45	i="$(($i+1))"
46	run_strace "$@" > "$EXP"
47	sed 1d < "$LOG" > "$OUT"
48	diff -- "$EXP" "$OUT" || continue
49	exit 0
50done
51
52fail_ "$STRACE $* output mismatch"
53