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2a78bf8596
The Process::Handler type has KResultOr<FlatPtr> as its return type. Using a different return type with an equally-sized template parameter sort of works but breaks once that condition is no longer true, e.g. for KResultOr<int> on x86_64. Ideally the syscall handlers would also take FlatPtrs as their args so we can get rid of the reinterpret_cast for the function pointer but I didn't quite feel like cleaning that up as well.
59 lines
1.5 KiB
C++
59 lines
1.5 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@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 <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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#include <Kernel/TTY/ConsoleManagement.h>
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namespace Kernel {
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KResultOr<FlatPtr> Process::sys$reboot()
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{
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if (!is_superuser())
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return EPERM;
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REQUIRE_NO_PROMISES;
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dbgln("acquiring FS locks...");
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FS::lock_all();
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dbgln("syncing mounted filesystems...");
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FS::sync();
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dbgln("attempting reboot via ACPI");
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if (ACPI::is_enabled())
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ACPI::Parser::the()->try_acpi_reboot();
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dbgln("attempting reboot via KB Controller...");
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IO::out8(0x64, 0xFE);
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return 0;
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}
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KResultOr<FlatPtr> Process::sys$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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ConsoleManagement::the().switch_to_debug();
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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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dmesgln("Shutdown can't be completed. It's safe to turn off the computer!");
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Processor::halt();
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}
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}
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