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8d0dbdeaac
This change removes the halt and reboot syscalls, and create a new mechanism to change the power state of the machine. Instead of how power state was changed until now, put a SysFS node as writable only for the superuser, that with a defined value, can result in either reboot or poweroff. In the future, a power group can be assigned to this node (which will be the GroupID responsible for power management). This opens an opportunity to permit to shutdown/reboot without superuser permissions, so in the future, a userspace daemon can take control of this node to perform power management operations without superuser permissions, if we enforce different UserID/GroupID on that node.
40 lines
1.3 KiB
C++
40 lines
1.3 KiB
C++
/*
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* Copyright (c) 2021, Liav A. <liavalb@hotmail.co.il>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <Kernel/Firmware/ACPI/Parser.h>
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#include <Kernel/Firmware/BIOS.h>
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#include <Kernel/Firmware/PowerStateSwitch.h>
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#include <Kernel/Firmware/SysFSFirmware.h>
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#include <Kernel/Sections.h>
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namespace Kernel {
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UNMAP_AFTER_INIT void FirmwareSysFSDirectory::initialize()
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{
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auto firmware_directory = adopt_ref_if_nonnull(new (nothrow) FirmwareSysFSDirectory()).release_nonnull();
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SysFSComponentRegistry::the().register_new_component(firmware_directory);
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firmware_directory->create_components();
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}
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void FirmwareSysFSDirectory::create_components()
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{
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auto bios_directory_or_error = BIOSSysFSDirectory::try_create(*this);
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VERIFY(!bios_directory_or_error.is_error());
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auto acpi_directory_or_error = ACPI::ACPISysFSDirectory::try_create(*this);
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VERIFY(!acpi_directory_or_error.is_error());
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auto power_state_switch_node = PowerStateSwitchNode::must_create(*this);
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m_components.append(bios_directory_or_error.release_value());
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m_components.append(acpi_directory_or_error.release_value());
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m_components.append(power_state_switch_node);
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}
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UNMAP_AFTER_INIT FirmwareSysFSDirectory::FirmwareSysFSDirectory()
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: SysFSDirectory("firmware", SysFSComponentRegistry::the().root_directory())
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{
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}
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}
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