mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 21:12:43 +00:00
30 lines
910 B
C++
30 lines
910 B
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2022, Karol Kosek <krkk@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/NumberFormat.h>
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#include <LibCore/Stream.h>
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#include <LibCore/System.h>
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#include <LibMain/Main.h>
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ErrorOr<int> serenity_main(Main::Arguments)
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{
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TRY(Core::System::pledge("stdio rpath"));
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auto file = TRY(Core::Stream::File::open("/sys/kernel/uptime"sv, Core::Stream::OpenMode::Read));
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TRY(Core::System::pledge("stdio"));
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Array<u8, BUFSIZ> buffer;
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auto read_buffer = TRY(file->read(buffer));
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auto maybe_seconds = AK::StringUtils::convert_to_uint(StringView(read_buffer));
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if (!maybe_seconds.has_value())
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return Error::from_string_literal("Couldn't convert to number");
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auto seconds = maybe_seconds.release_value();
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outln("Up {}", human_readable_time(seconds));
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return 0;
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}
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