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