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Kernel/SysFS: Mark SysFSDirectory traverse and lookup methods as final

Browse source 
This enforces us to remove duplicated code across the SysFS code. This
results in great simplification of how the SysFS works now, because we
enforce one way to treat SysFSDirectory objects.
This commit is contained in:
Liav A 2022-04-23 01:06:37 +03:00 • committed by Andreas Kling
parent 6733f19b3c
commit 70afa0b171
18 changed files with 114 additions and 178 deletions
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25
Kernel/FileSystem/SysFS/Component.cpp
View file

@ -106,26 +106,33 @@ SysFSSymbolicLink::SysFSSymbolicLink(SysFSDirectory const& parent_directory, Sys
ErrorOr<void> SysFSDirectory::traverse_as_directory(FileSystemID fsid, Function<ErrorOr<void>(FileSystem::DirectoryEntryView const&)> callback) const
{
MutexLocker locker(m_traverse_lock);
VERIFY(m_parent_directory);
TRY(callback({ "."sv, { fsid, component_index() }, 0 }));
if (is_root_directory()) {
TRY(callback({ ".."sv, { fsid, component_index() }, 0 }));
} else {
VERIFY(m_parent_directory);
TRY(callback({ ".."sv, { fsid, m_parent_directory->component_index() }, 0 }));
}
for (auto& component : m_components) {
InodeIdentifier identifier = { fsid, component.component_index() };
TRY(callback({ component.name(), identifier, 0 }));
return m_child_components.with([&](auto& list) -> ErrorOr<void> {
for (auto& child_component : list) {
InodeIdentifier identifier = { fsid, child_component.component_index() };
TRY(callback({ child_component.name(), identifier, 0 }));
}
return {};
});
}
RefPtr<SysFSComponent> SysFSDirectory::lookup(StringView name)
{
for (auto& component : m_components) {
if (component.name() == name) {
return component;
return m_child_components.with([&](auto& list) -> RefPtr<SysFSComponent> {
for (auto& child_component : list) {
if (child_component.name() == name) {
return child_component;
}
}
return {};
return nullptr;
});
}
SysFSDirectory::SysFSDirectory(SysFSDirectory const& parent_directory)

16
Kernel/FileSystem/SysFS/Component.h
View file

@ -25,6 +25,8 @@ struct SysFSInodeData : public OpenFileDescriptionData {
class SysFSDirectory;
class SysFSComponent : public RefCounted<SysFSComponent> {
friend class SysFSDirectory;
public:
virtual StringView name() const = 0;
virtual ErrorOr<size_t> read_bytes(off_t, size_t, UserOrKernelBuffer&, OpenFileDescription*) const { return Error::from_errno(ENOTIMPL); }
@ -52,6 +54,8 @@ protected:
RefPtr<SysFSDirectory> m_parent_directory;
IntrusiveListNode<SysFSComponent, NonnullRefPtr<SysFSComponent>> m_list_node;
private:
InodeIndex m_component_index {};
};
@ -72,17 +76,19 @@ protected:
class SysFSDirectory : public SysFSComponent {
public:
virtual ErrorOr<void> traverse_as_directory(FileSystemID, Function<ErrorOr<void>(FileSystem::DirectoryEntryView const&)>) const override;
virtual RefPtr<SysFSComponent> lookup(StringView name) override;
virtual ErrorOr<void> traverse_as_directory(FileSystemID, Function<ErrorOr<void>(FileSystem::DirectoryEntryView const&)>) const override final;
virtual RefPtr<SysFSComponent> lookup(StringView name) override final;
virtual ErrorOr<NonnullRefPtr<SysFSInode>> to_inode(SysFS const& sysfs_instance) const override final;
using ChildList = SpinlockProtected<IntrusiveList<&SysFSComponent::m_list_node>>;
protected:
virtual bool is_root_directory() const { return false; }
SysFSDirectory() {};
explicit SysFSDirectory(SysFSDirectory const& parent_directory);
NonnullRefPtrVector<SysFSComponent> m_components;
mutable Mutex m_traverse_lock;
ChildList m_child_components;
};
}

10
Kernel/FileSystem/SysFS/Registry.cpp
View file

@ -32,7 +32,10 @@ UNMAP_AFTER_INIT SysFSComponentRegistry::SysFSComponentRegistry()
UNMAP_AFTER_INIT void SysFSComponentRegistry::register_new_component(SysFSComponent& component)
{
SpinlockLocker locker(m_root_directory_lock);
m_root_directory->m_components.append(component);
MUST(m_root_directory->m_child_components.with([&](auto& list) -> ErrorOr<void> {
list.append(component);
return {};
}));
}
SysFSBusDirectory& SysFSComponentRegistry::buses_directory()
@ -43,7 +46,10 @@ SysFSBusDirectory& SysFSComponentRegistry::buses_directory()
void SysFSComponentRegistry::register_new_bus_directory(SysFSDirectory& new_bus_directory)
{
VERIFY(!m_root_directory->m_buses_directory.is_null());
m_root_directory->m_buses_directory->m_components.append(new_bus_directory);
MUST(m_root_directory->m_buses_directory->m_child_components.with([&](auto& list) -> ErrorOr<void> {
list.append(new_bus_directory);
return {};
}));
}
}

20
Kernel/FileSystem/SysFS/RootDirectory.cpp
View file

@ -17,25 +17,15 @@ NonnullRefPtr<SysFSRootDirectory> SysFSRootDirectory::create()
return adopt_ref(*new (nothrow) SysFSRootDirectory);
}
ErrorOr<void> SysFSRootDirectory::traverse_as_directory(FileSystemID fsid, Function<ErrorOr<void>(FileSystem::DirectoryEntryView const&)> callback) const
{
MutexLocker locker(m_traverse_lock);
TRY(callback({ "."sv, { fsid, component_index() }, 0 }));
TRY(callback({ ".."sv, { fsid, 0 }, 0 }));
for (auto const& component : m_components) {
InodeIdentifier identifier = { fsid, component.component_index() };
TRY(callback({ component.name(), identifier, 0 }));
}
return {};
}
SysFSRootDirectory::SysFSRootDirectory()
{
auto buses_directory = SysFSBusDirectory::must_create(*this);
auto device_identifiers_directory = SysFSDeviceIdentifiersDirectory::must_create(*this);
m_components.append(buses_directory);
m_components.append(device_identifiers_directory);
MUST(m_child_components.with([&](auto& list) -> ErrorOr<void> {
list.append(buses_directory);
list.append(device_identifiers_directory);
return {};
}));
m_buses_directory = buses_directory;
}

2
Kernel/FileSystem/SysFS/RootDirectory.h
View file

@ -17,9 +17,9 @@ class SysFSRootDirectory final : public SysFSDirectory {
public:
virtual StringView name() const override { return "."sv; }
static NonnullRefPtr<SysFSRootDirectory> create();
virtual ErrorOr<void> traverse_as_directory(FileSystemID, Function<ErrorOr<void>(FileSystem::DirectoryEntryView const&)>) const override;
private:
virtual bool is_root_directory() const override final { return true; }
SysFSRootDirectory();
RefPtr<SysFSBusDirectory> m_buses_directory;
};

5
Kernel/FileSystem/SysFS/Subsystems/Bus/PCI/BusDirectory.cpp
View file

@ -23,9 +23,12 @@ UNMAP_AFTER_INIT void PCIBusSysFSDirectory::initialize()
UNMAP_AFTER_INIT PCIBusSysFSDirectory::PCIBusSysFSDirectory()
: SysFSDirectory(SysFSComponentRegistry::the().buses_directory())
{
MUST(m_child_components.with([&](auto& list) -> ErrorOr<void> {
MUST(PCI::enumerate([&](PCI::DeviceIdentifier const& device_identifier) {
auto pci_device = PCIDeviceSysFSDirectory::create(*this, device_identifier.address());
m_components.append(pci_device);
list.append(pci_device);
}));
return {};
}));
}

36
Kernel/FileSystem/SysFS/Subsystems/Bus/PCI/DeviceDirectory.cpp
View file

@ -17,7 +17,26 @@ UNMAP_AFTER_INIT NonnullRefPtr<PCIDeviceSysFSDirectory> PCIDeviceSysFSDirectory:
{
// FIXME: Handle allocation failure gracefully
auto device_name = MUST(KString::formatted("{:04x}:{:02x}:{:02x}.{}", address.domain(), address.bus(), address.device(), address.function()));
return adopt_ref(*new (nothrow) PCIDeviceSysFSDirectory(move(device_name), parent_directory, address));
auto directory = adopt_ref(*new (nothrow) PCIDeviceSysFSDirectory(move(device_name), parent_directory, address));
MUST(directory->m_child_components.with([&](auto& list) -> ErrorOr<void> {
list.append(PCIDeviceAttributeSysFSComponent::create(*directory, PCI::RegisterOffset::VENDOR_ID, 2));
list.append(PCIDeviceAttributeSysFSComponent::create(*directory, PCI::RegisterOffset::DEVICE_ID, 2));
list.append(PCIDeviceAttributeSysFSComponent::create(*directory, PCI::RegisterOffset::CLASS, 1));
list.append(PCIDeviceAttributeSysFSComponent::create(*directory, PCI::RegisterOffset::SUBCLASS, 1));
list.append(PCIDeviceAttributeSysFSComponent::create(*directory, PCI::RegisterOffset::REVISION_ID, 1));
list.append(PCIDeviceAttributeSysFSComponent::create(*directory, PCI::RegisterOffset::PROG_IF, 1));
list.append(PCIDeviceAttributeSysFSComponent::create(*directory, PCI::RegisterOffset::SUBSYSTEM_VENDOR_ID, 2));
list.append(PCIDeviceAttributeSysFSComponent::create(*directory, PCI::RegisterOffset::SUBSYSTEM_ID, 2));
list.append(PCIDeviceAttributeSysFSComponent::create(*directory, PCI::RegisterOffset::BAR0, 4));
list.append(PCIDeviceAttributeSysFSComponent::create(*directory, PCI::RegisterOffset::BAR1, 4));
list.append(PCIDeviceAttributeSysFSComponent::create(*directory, PCI::RegisterOffset::BAR2, 4));
list.append(PCIDeviceAttributeSysFSComponent::create(*directory, PCI::RegisterOffset::BAR3, 4));
list.append(PCIDeviceAttributeSysFSComponent::create(*directory, PCI::RegisterOffset::BAR4, 4));
list.append(PCIDeviceAttributeSysFSComponent::create(*directory, PCI::RegisterOffset::BAR5, 4));
return {};
}));
return directory;
}
UNMAP_AFTER_INIT PCIDeviceSysFSDirectory::PCIDeviceSysFSDirectory(NonnullOwnPtr<KString> device_directory_name, SysFSDirectory const& parent_directory, PCI::Address address)
@ -25,21 +44,6 @@ UNMAP_AFTER_INIT PCIDeviceSysFSDirectory::PCIDeviceSysFSDirectory(NonnullOwnPtr<
, m_address(address)
, m_device_directory_name(move(device_directory_name))
{
m_components.append(PCIDeviceAttributeSysFSComponent::create(*this, PCI::RegisterOffset::VENDOR_ID, 2));
m_components.append(PCIDeviceAttributeSysFSComponent::create(*this, PCI::RegisterOffset::DEVICE_ID, 2));
m_components.append(PCIDeviceAttributeSysFSComponent::create(*this, PCI::RegisterOffset::CLASS, 1));
m_components.append(PCIDeviceAttributeSysFSComponent::create(*this, PCI::RegisterOffset::SUBCLASS, 1));
m_components.append(PCIDeviceAttributeSysFSComponent::create(*this, PCI::RegisterOffset::REVISION_ID, 1));
m_components.append(PCIDeviceAttributeSysFSComponent::create(*this, PCI::RegisterOffset::PROG_IF, 1));
m_components.append(PCIDeviceAttributeSysFSComponent::create(*this, PCI::RegisterOffset::SUBSYSTEM_VENDOR_ID, 2));
m_components.append(PCIDeviceAttributeSysFSComponent::create(*this, PCI::RegisterOffset::SUBSYSTEM_ID, 2));
m_components.append(PCIDeviceAttributeSysFSComponent::create(*this, PCI::RegisterOffset::BAR0, 4));
m_components.append(PCIDeviceAttributeSysFSComponent::create(*this, PCI::RegisterOffset::BAR1, 4));
m_components.append(PCIDeviceAttributeSysFSComponent::create(*this, PCI::RegisterOffset::BAR2, 4));
m_components.append(PCIDeviceAttributeSysFSComponent::create(*this, PCI::RegisterOffset::BAR3, 4));
m_components.append(PCIDeviceAttributeSysFSComponent::create(*this, PCI::RegisterOffset::BAR4, 4));
m_components.append(PCIDeviceAttributeSysFSComponent::create(*this, PCI::RegisterOffset::BAR5, 4));
}
}

26
Kernel/FileSystem/SysFS/Subsystems/Bus/USB/BusDirectory.cpp
View file

@ -12,32 +12,6 @@ namespace Kernel {
static SysFSUSBBusDirectory* s_procfs_usb_bus_directory;
ErrorOr<void> SysFSUSBBusDirectory::traverse_as_directory(FileSystemID fsid, Function<ErrorOr<void>(FileSystem::DirectoryEntryView const&)> callback) const
{
SpinlockLocker lock(m_lock);
// Note: if the parent directory is null, it means something bad happened as this should not happen for the USB directory.
VERIFY(m_parent_directory);
TRY(callback({ "."sv, { fsid, component_index() }, 0 }));
TRY(callback({ ".."sv, { fsid, m_parent_directory->component_index() }, 0 }));
for (auto const& device_node : m_device_nodes) {
InodeIdentifier identifier = { fsid, device_node.component_index() };
TRY(callback({ device_node.name(), identifier, 0 }));
}
return {};
}
RefPtr<SysFSComponent> SysFSUSBBusDirectory::lookup(StringView name)
{
SpinlockLocker lock(m_lock);
for (auto& device_node : m_device_nodes) {
if (device_node.name() == name) {
return device_node;
}
}
return {};
}
RefPtr<SysFSUSBDeviceInformation> SysFSUSBBusDirectory::device_node_for(USB::Device& device)
{
RefPtr<USB::Device> checked_device = device;

3
Kernel/FileSystem/SysFS/Subsystems/Bus/USB/BusDirectory.h
View file

@ -23,9 +23,6 @@ public:
void plug(USB::Device&);
void unplug(USB::Device&);
virtual ErrorOr<void> traverse_as_directory(FileSystemID, Function<ErrorOr<void>(FileSystem::DirectoryEntryView const&)>) const override;
virtual RefPtr<SysFSComponent> lookup(StringView name) override;
private:
explicit SysFSUSBBusDirectory(SysFSBusDirectory&);

27
Kernel/FileSystem/SysFS/Subsystems/DeviceIdentifiers/BlockDevicesDirectory.cpp
View file

@ -28,31 +28,4 @@ SysFSBlockDevicesDirectory& SysFSBlockDevicesDirectory::the()
return *s_the;
}
ErrorOr<void> SysFSBlockDevicesDirectory::traverse_as_directory(FileSystemID fsid, Function<ErrorOr<void>(FileSystem::DirectoryEntryView const&)> callback) const
{
VERIFY(m_parent_directory);
TRY(callback({ "."sv, { fsid, component_index() }, 0 }));
TRY(callback({ ".."sv, { fsid, m_parent_directory->component_index() }, 0 }));
return m_devices_list.with([&](auto& list) -> ErrorOr<void> {
for (auto& exposed_device : list) {
VERIFY(exposed_device.is_block_device());
TRY(callback({ exposed_device.name(), { fsid, exposed_device.component_index() }, 0 }));
}
return {};
});
}
RefPtr<SysFSComponent> SysFSBlockDevicesDirectory::lookup(StringView name)
{
return m_devices_list.with([&](auto& list) -> RefPtr<SysFSComponent> {
for (auto& exposed_device : list) {
VERIFY(exposed_device.is_block_device());
if (exposed_device.name() == name)
return exposed_device;
}
return nullptr;
});
}
}

7
Kernel/FileSystem/SysFS/Subsystems/DeviceIdentifiers/BlockDevicesDirectory.h
View file

@ -17,18 +17,13 @@ class SysFSBlockDevicesDirectory final : public SysFSDirectory {
public:
virtual StringView name() const override { return "block"sv; }
static NonnullRefPtr<SysFSBlockDevicesDirectory> must_create(SysFSDeviceIdentifiersDirectory const&);
virtual ErrorOr<void> traverse_as_directory(FileSystemID, Function<ErrorOr<void>(FileSystem::DirectoryEntryView const&)>) const override;
virtual RefPtr<SysFSComponent> lookup(StringView name) override;
static SysFSBlockDevicesDirectory& the();
using DevicesList = SpinlockProtected<IntrusiveList<&SysFSDeviceComponent::m_list_node>>;
DevicesList& devices_list(Badge<Device>) { return m_devices_list; }
ChildList& devices_list(Badge<Device>) { return m_child_components; }
private:
explicit SysFSBlockDevicesDirectory(SysFSDeviceIdentifiersDirectory const&);
DevicesList m_devices_list;
};
}

26
Kernel/FileSystem/SysFS/Subsystems/DeviceIdentifiers/CharacterDevicesDirectory.cpp
View file

@ -21,20 +21,6 @@ SysFSCharacterDevicesDirectory::SysFSCharacterDevicesDirectory(SysFSDeviceIdenti
{
s_the = this;
}
ErrorOr<void> SysFSCharacterDevicesDirectory::traverse_as_directory(FileSystemID fsid, Function<ErrorOr<void>(FileSystem::DirectoryEntryView const&)> callback) const
{
VERIFY(m_parent_directory);
TRY(callback({ "."sv, { fsid, component_index() }, 0 }));
TRY(callback({ ".."sv, { fsid, m_parent_directory->component_index() }, 0 }));
return m_devices_list.with([&](auto& list) -> ErrorOr<void> {
for (auto& exposed_device : list) {
VERIFY(!exposed_device.is_block_device());
TRY(callback({ exposed_device.name(), { fsid, exposed_device.component_index() }, 0 }));
}
return {};
});
}
SysFSCharacterDevicesDirectory& SysFSCharacterDevicesDirectory::the()
{
@ -42,16 +28,4 @@ SysFSCharacterDevicesDirectory& SysFSCharacterDevicesDirectory::the()
return *s_the;
}
RefPtr<SysFSComponent> SysFSCharacterDevicesDirectory::lookup(StringView name)
{
return m_devices_list.with([&](auto& list) -> RefPtr<SysFSComponent> {
for (auto& exposed_device : list) {
VERIFY(!exposed_device.is_block_device());
if (exposed_device.name() == name)
return exposed_device;
}
return nullptr;
});
}
}

7
Kernel/FileSystem/SysFS/Subsystems/DeviceIdentifiers/CharacterDevicesDirectory.h
View file

@ -17,18 +17,13 @@ class SysFSCharacterDevicesDirectory final : public SysFSDirectory {
public:
virtual StringView name() const override { return "char"sv; }
static NonnullRefPtr<SysFSCharacterDevicesDirectory> must_create(SysFSDeviceIdentifiersDirectory const&);
virtual ErrorOr<void> traverse_as_directory(FileSystemID, Function<ErrorOr<void>(FileSystem::DirectoryEntryView const&)>) const override;
virtual RefPtr<SysFSComponent> lookup(StringView name) override;
static SysFSCharacterDevicesDirectory& the();
using DevicesList = SpinlockProtected<IntrusiveList<&SysFSDeviceComponent::m_list_node>>;
DevicesList& devices_list(Badge<Device>) { return m_devices_list; }
ChildList& devices_list(Badge<Device>) { return m_child_components; }
private:
explicit SysFSCharacterDevicesDirectory(SysFSDeviceIdentifiersDirectory const&);
DevicesList m_devices_list;
};
}

1
Kernel/FileSystem/SysFS/Subsystems/DeviceIdentifiers/DeviceComponent.h
View file

@ -25,7 +25,6 @@ public:
private:
SysFSDeviceComponent(NonnullOwnPtr<KString> major_minor_formatted_device_name, Device const&);
IntrusiveListNode<SysFSDeviceComponent, NonnullRefPtr<SysFSDeviceComponent>> m_list_node;
bool m_block_device;
NonnullOwnPtr<KString> m_major_minor_formatted_device_name;

8
Kernel/FileSystem/SysFS/Subsystems/DeviceIdentifiers/Directory.cpp
View file

@ -15,8 +15,12 @@ namespace Kernel {
UNMAP_AFTER_INIT NonnullRefPtr<SysFSDeviceIdentifiersDirectory> SysFSDeviceIdentifiersDirectory::must_create(SysFSRootDirectory const& root_directory)
{
auto devices_directory = adopt_ref_if_nonnull(new SysFSDeviceIdentifiersDirectory(root_directory)).release_nonnull();
devices_directory->m_components.append(SysFSBlockDevicesDirectory::must_create(*devices_directory));
devices_directory->m_components.append(SysFSCharacterDevicesDirectory::must_create(*devices_directory));
MUST(devices_directory->m_child_components.with([&](auto& list) -> ErrorOr<void> {
list.append(SysFSBlockDevicesDirectory::must_create(*devices_directory));
list.append(SysFSCharacterDevicesDirectory::must_create(*devices_directory));
return {};
}));
return devices_directory;
}
SysFSDeviceIdentifiersDirectory::SysFSDeviceIdentifiersDirectory(SysFSRootDirectory const& root_directory)

7
Kernel/FileSystem/SysFS/Subsystems/Firmware/BIOS/Directory.cpp
View file

@ -58,8 +58,11 @@ void BIOSSysFSDirectory::create_components()
dbgln("BIOSSysFSDirectory: invalid smbios structure table length");
return;
}
m_components.append(BIOSSysFSComponent::must_create(BIOSSysFSComponent::Type::DMIEntryPoint, m_dmi_entry_point, m_dmi_entry_point_length));
m_components.append(BIOSSysFSComponent::must_create(BIOSSysFSComponent::Type::SMBIOSTable, m_smbios_structure_table, m_smbios_structure_table_length));
MUST(m_child_components.with([&](auto& list) -> ErrorOr<void> {
list.append(BIOSSysFSComponent::must_create(BIOSSysFSComponent::Type::DMIEntryPoint, m_dmi_entry_point, m_dmi_entry_point_length));
list.append(BIOSSysFSComponent::must_create(BIOSSysFSComponent::Type::SMBIOSTable, m_smbios_structure_table, m_smbios_structure_table_length));
return {};
}));
}
UNMAP_AFTER_INIT void BIOSSysFSDirectory::initialize_dmi_exposer()

9
Kernel/FileSystem/SysFS/Subsystems/Firmware/Directory.cpp
View file

@ -22,10 +22,13 @@ UNMAP_AFTER_INIT void FirmwareSysFSDirectory::initialize()
void FirmwareSysFSDirectory::create_components()
{
m_components.append(BIOSSysFSDirectory::must_create(*this));
MUST(m_child_components.with([&](auto& list) -> ErrorOr<void> {
list.append(BIOSSysFSDirectory::must_create(*this));
if (ACPI::is_enabled())
m_components.append(ACPI::ACPISysFSDirectory::must_create(*this));
m_components.append(PowerStateSwitchNode::must_create(*this));
list.append(ACPI::ACPISysFSDirectory::must_create(*this));
list.append(PowerStateSwitchNode::must_create(*this));
return {};
}));
}
UNMAP_AFTER_INIT FirmwareSysFSDirectory::FirmwareSysFSDirectory()

19
Kernel/Firmware/ACPI/Parser.cpp
View file

@ -70,28 +70,31 @@ UNMAP_AFTER_INIT ACPISysFSComponent::ACPISysFSComponent(NonnullOwnPtr<KString> t
UNMAP_AFTER_INIT void ACPISysFSDirectory::find_tables_and_register_them_as_components()
{
NonnullRefPtrVector<SysFSComponent> components;
size_t ssdt_count = 0;
MUST(m_child_components.with([&](auto& list) -> ErrorOr<void> {
ACPI::Parser::the()->enumerate_static_tables([&](StringView signature, PhysicalAddress p_table, size_t length) {
if (signature == "SSDT") {
auto component_name = KString::formatted("{:4s}{}", signature.characters_without_null_termination(), ssdt_count).release_value_but_fixme_should_propagate_errors();
components.append(ACPISysFSComponent::create(component_name->view(), p_table, length));
list.append(ACPISysFSComponent::create(component_name->view(), p_table, length));
ssdt_count++;
return;
}
components.append(ACPISysFSComponent::create(signature, p_table, length));
list.append(ACPISysFSComponent::create(signature, p_table, length));
});
m_components = components;
return {};
}));
MUST(m_child_components.with([&](auto& list) -> ErrorOr<void> {
auto rsdp = Memory::map_typed<Structures::RSDPDescriptor20>(ACPI::Parser::the()->rsdp()).release_value_but_fixme_should_propagate_errors();
m_components.append(ACPISysFSComponent::create("RSDP"sv, ACPI::Parser::the()->rsdp(), rsdp->base.revision == 0 ? sizeof(Structures::RSDPDescriptor) : rsdp->length));
list.append(ACPISysFSComponent::create("RSDP"sv, ACPI::Parser::the()->rsdp(), rsdp->base.revision == 0 ? sizeof(Structures::RSDPDescriptor) : rsdp->length));
auto main_system_description_table = Memory::map_typed<Structures::SDTHeader>(ACPI::Parser::the()->main_system_description_table()).release_value_but_fixme_should_propagate_errors();
if (ACPI::Parser::the()->is_xsdt_supported()) {
m_components.append(ACPISysFSComponent::create("XSDT"sv, ACPI::Parser::the()->main_system_description_table(), main_system_description_table->length));
list.append(ACPISysFSComponent::create("XSDT"sv, ACPI::Parser::the()->main_system_description_table(), main_system_description_table->length));
} else {
m_components.append(ACPISysFSComponent::create("RSDT"sv, ACPI::Parser::the()->main_system_description_table(), main_system_description_table->length));
list.append(ACPISysFSComponent::create("RSDT"sv, ACPI::Parser::the()->main_system_description_table(), main_system_description_table->length));
}
return {};
}));
}
UNMAP_AFTER_INIT NonnullRefPtr<ACPISysFSDirectory> ACPISysFSDirectory::must_create(FirmwareSysFSDirectory& firmware_directory)