mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2025-01-23 09:46:04 -05:00
478f543899
Instead, allocate before constructing the object and pass NonnullOwnPtr of KString to the object if needed. Some classes can determine their names as they have a known attribute to look for or have a static name.
108 lines
3.1 KiB
C++
108 lines
3.1 KiB
C++
/*
|
|
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
|
|
* Copyright (c) 2021, Liav A. <liavalb@hotmail.co.il>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <Kernel/Arch/x86/IO.h>
|
|
#include <Kernel/FileSystem/FileSystem.h>
|
|
#include <Kernel/Firmware/ACPI/Parser.h>
|
|
#include <Kernel/Firmware/PowerStateSwitch.h>
|
|
#include <Kernel/Process.h>
|
|
#include <Kernel/Sections.h>
|
|
#include <Kernel/TTY/ConsoleManagement.h>
|
|
|
|
namespace Kernel {
|
|
|
|
mode_t PowerStateSwitchNode::permissions() const
|
|
{
|
|
return S_IRUSR | S_IRGRP | S_IWUSR | S_IWGRP;
|
|
}
|
|
|
|
UNMAP_AFTER_INIT NonnullRefPtr<PowerStateSwitchNode> PowerStateSwitchNode::must_create(FirmwareSysFSDirectory& firmware_directory)
|
|
{
|
|
return adopt_ref_if_nonnull(new (nothrow) PowerStateSwitchNode(firmware_directory)).release_nonnull();
|
|
}
|
|
|
|
UNMAP_AFTER_INIT PowerStateSwitchNode::PowerStateSwitchNode(FirmwareSysFSDirectory&)
|
|
: SysFSComponent()
|
|
{
|
|
}
|
|
|
|
ErrorOr<void> PowerStateSwitchNode::truncate(u64 size)
|
|
{
|
|
// Note: This node doesn't store any useful data anyway, so we can safely
|
|
// truncate this to zero (essentially ignoring the request without failing).
|
|
if (size != 0)
|
|
return EPERM;
|
|
return {};
|
|
}
|
|
|
|
ErrorOr<size_t> PowerStateSwitchNode::write_bytes(off_t offset, size_t count, UserOrKernelBuffer const& data, OpenFileDescription*)
|
|
{
|
|
if (Checked<off_t>::addition_would_overflow(offset, count))
|
|
return EOVERFLOW;
|
|
if (offset > 0)
|
|
return EINVAL;
|
|
if (count > 1)
|
|
return EINVAL;
|
|
|
|
char buf[1];
|
|
TRY(data.read(buf, 1));
|
|
switch (buf[0]) {
|
|
case '0':
|
|
return EINVAL;
|
|
case '1':
|
|
reboot();
|
|
VERIFY_NOT_REACHED();
|
|
case '2':
|
|
poweroff();
|
|
VERIFY_NOT_REACHED();
|
|
default:
|
|
return EINVAL;
|
|
}
|
|
VERIFY_NOT_REACHED();
|
|
}
|
|
|
|
void PowerStateSwitchNode::reboot()
|
|
{
|
|
MutexLocker locker(Process::current().big_lock());
|
|
|
|
dbgln("acquiring FS locks...");
|
|
FileSystem::lock_all();
|
|
dbgln("syncing mounted filesystems...");
|
|
FileSystem::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);
|
|
dbgln("reboot attempts failed, applications will stop responding.");
|
|
dmesgln("Reboot can't be completed. It's safe to turn off the computer!");
|
|
Processor::halt();
|
|
}
|
|
|
|
void PowerStateSwitchNode::poweroff()
|
|
{
|
|
MutexLocker locker(Process::current().big_lock());
|
|
|
|
ConsoleManagement::the().switch_to_debug();
|
|
|
|
dbgln("acquiring FS locks...");
|
|
FileSystem::lock_all();
|
|
dbgln("syncing mounted filesystems...");
|
|
FileSystem::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.");
|
|
dmesgln("Shutdown can't be completed. It's safe to turn off the computer!");
|
|
Processor::halt();
|
|
}
|
|
|
|
}
|