jcs.org
Serenity Operating System
1/*
2 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
3 * Copyright (c) 2021, Liav A. <liavalb@hotmail.co.il>
4 * Copyright (c) 2022, Alex Major
5 *
6 * SPDX-License-Identifier: BSD-2-Clause
7 */
8
9#include <AK/DeprecatedString.h>
10#include <LibCore/File.h>
11#include <LibMain/Main.h>
12#include <fcntl.h>
13#include <stdio.h>
14#include <unistd.h>
15
16ErrorOr<int> serenity_main(Main::Arguments)
17{
18 auto file = TRY(Core::File::open("/sys/kernel/power_state"sv, Core::File::OpenMode::Write));
19
20 const DeprecatedString file_contents = "2";
21 TRY(file->write_until_depleted(file_contents.bytes()));
22 file->close();
23
24 return 0;
25}