#!/bin/sh -efu
#
# Check -DD option.
#
# Copyright (c) 2019-2023 Dmitry V. Levin <ldv@strace.io>
# All rights reserved.
#
# SPDX-License-Identifier: GPL-2.0-or-later

. "${srcdir=.}/init.sh"

[ "$STRACE" = "$STRACE_EXE" ] ||
	skip_ 'Not applicable: $STRACE != $STRACE_EXE'

run_prog_skip_if_failed \
        kill -0 $$

status_file=/proc/self/status
get_tracer_pid()
{
	sed '/^TracerPid:[[:space:]]*/!d;s///' "$@"
}
[ "$(get_tracer_pid "$status_file")" -ge 0 ] ||
        framework_skip_ "$status_file is not available"

run_prog ../sleep 0

sleep_duration="$((TIMEOUT_DURATION/2))"

test_D()
{
	local tracee_pid tracer_pid rc sig=15

	set -- $STRACE --output="$LOG" --columns=39 \
		--interruptible=anywhere --trace=nanosleep "$@" -- \
		../sleep "$sleep_duration"
	> "$LOG"

	../setpgrp-exec "$@" &
	tracee_pid=$!

	while tracer_pid="$(get_tracer_pid "/proc/$tracee_pid/status")"; do
		[ "$tracer_pid" = 0 ] ||
			break
		$SLEEP_A_BIT
	done

	$SLEEP_A_BIT
	kill -$sig -$tracee_pid

	wait $tracee_pid && rc=0 || rc=$?
	[ "$rc" -eq $((128 + sig)) ] ||
		dump_log_and_fail_with \
			"$* failed with unexpected exit status $rc"

	while kill -0 "$tracer_pid" 2> /dev/null; do
		$SLEEP_A_BIT
	done
	match_diff "$LOG" "$EXP"
}

printf 'nanosleep({tv_sec=%s, tv_nsec=0}, ' "$sleep_duration" > "$EXP"
test_D -D

uid="${UID:-`id -u`}"
cat > "$EXP" <<__EOF__
nanosleep({tv_sec=$sleep_duration, tv_nsec=0}, NULL) = ? ERESTART_RESTARTBLOCK (Interrupted by signal)
--- SIGTERM {si_signo=SIGTERM, si_code=SI_USER, si_pid=$$, si_uid=$uid} ---
+++ killed by SIGTERM +++
__EOF__

test_D -DD
test_D -DDD
