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#!/bin/sh
#
# Check decoding of threads when a non-leader thread invokes execve.
#
# Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
# Copyright (c) 2016-2018 The strace developers.
# All rights reserved.
#
# SPDX-License-Identifier: GPL-2.0-or-later
. "${srcdir=.}/init.sh"
# Check that PTRACE_EVENT_EXEC support in kernel is good enough.
# The kernel before commit v3.1-rc1~308^2~7 reported 0 instead of old pid.
require_min_kernel_version_or_skip 3.1
check_prog diff
run_prog > /dev/null
set -- -a21 -f -esignal=none -e trace=execve,exit,nanosleep,rt_sigsuspend $args
# Due to probabilistic nature of the test, try it several times.
i=0
while [ $i -le 19 ]; do
i="$(($i+1))"
run_strace "$@" > "$EXP"
sed 1d < "$LOG" > "$OUT"
diff -- "$EXP" "$OUT" || continue
exit 0
done
fail_ "$STRACE $* output mismatch"
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