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#!/bin/sh
#
# Check decoding of threads when a non-leader thread invokes execve.
#
# Copyright (c) 2016 Dmitry V. Levin <ldv@strace.io>
# Copyright (c) 2016-2023 The strace developers.
# All rights reserved.
#
# SPDX-License-Identifier: GPL-2.0-or-later
. "${srcdir=.}/init.sh"
# Check that PTRACE_EVENT_EXEC support in kernel is good enough.
# The kernel before commit v3.1-rc1~308^2~7 reported 0 instead of old pid.
require_min_kernel_version_or_skip 3.1
# This test requires some concurrency between threads.
require_min_nproc 2
opts="${*:-}"
check_prog diff
run_prog_skip_if_failed date +%s > /dev/null
s0="$(date +%s)"
run_prog > /dev/null
set -- -a21 -f -esignal=none -e trace=execve,exit,nanosleep,rt_sigsuspend $opts $args
# Due to probabilistic nature of the test, try it several times.
while :; do
run_strace "$@" > "$EXP"
sed 1d < "$LOG" > "$OUT"
diff -- "$EXP" "$OUT" && exit 0
s1="$(date +%s)"
if [ "$((s1-s0))" -gt "$((TIMEOUT_DURATION/2))" ]; then
fail_ "$STRACE $* output mismatch"
fi
done
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