#!/bin/sh
#
# Check status=none filtering when a non-leader thread invokes execve.
#
# Copyright (c) 2019 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

check_prog diff
run_prog_skip_if_failed date +%s > /dev/null
s0="$(date +%s)"

run_prog > /dev/null

set -- -a14 -f -e status=${status_filter:-none} $args

# Due to probabilistic nature of the test, try it several times.
while :; do
	> "$LOG" || fail_ "failed to write $LOG"
	rc=0
	$STRACE -o "$LOG" "$@" > "$EXP" || {
		rc=$?
		cat < "$LOG" >&2
	}

	if [ "$rc" = 0 ] && diff -u -- "$EXP" "$LOG"; then
		exit 0
	fi

	s1="$(date +%s)"
	[ "$(($s1-$s0))" -gt "$(($TIMEOUT_DURATION/2))" ] ||
		continue

	[ "$rc" = 0 ] &&
		fail_ "$STRACE $* output mismatch" ||
		fail_ "$STRACE $* failed with code $rc"
done