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ac71775de5
This makes it a lot easier to return errors since we no longer have to worry about negating EFOO errors and can just return them flat.
77 lines
2.5 KiB
C++
77 lines
2.5 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <Kernel/ACPI/Parser.h>
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#include <Kernel/FileSystem/FileSystem.h>
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#include <Kernel/IO.h>
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#include <Kernel/Process.h>
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namespace Kernel {
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KResultOr<int> Process::sys$reboot()
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{
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if (!is_superuser())
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return EPERM;
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REQUIRE_NO_PROMISES;
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dbgln("acquiring FS locks...");
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FS::lock_all();
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dbgln("syncing mounted filesystems...");
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FS::sync();
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dbgln("attempting reboot via ACPI");
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if (ACPI::is_enabled())
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ACPI::Parser::the()->try_acpi_reboot();
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dbgln("attempting reboot via KB Controller...");
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IO::out8(0x64, 0xFE);
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return 0;
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}
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KResultOr<int> Process::sys$halt()
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{
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if (!is_superuser())
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return EPERM;
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REQUIRE_NO_PROMISES;
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dbgln("acquiring FS locks...");
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FS::lock_all();
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dbgln("syncing mounted filesystems...");
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FS::sync();
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dbgln("attempting system shutdown...");
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// QEMU Shutdown
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IO::out16(0x604, 0x2000);
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// If we're here, the shutdown failed. Try VirtualBox shutdown.
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IO::out16(0x4004, 0x3400);
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// VirtualBox shutdown failed. Try Bochs/Old QEMU shutdown.
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IO::out16(0xb004, 0x2000);
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dbgln("shutdown attempts failed, applications will stop responding.");
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return 0;
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}
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}
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