Kernel: Make various T::class_name() and similar return StringView

Instead of returning char const*, we can also give you a StringView.

Kernel/ACPI/DynamicParser.h

@@ -27,7 +27,7 @@ public:
     virtual void disable_aml_interpretation() override;
     virtual void try_acpi_shutdown() override;
     virtual bool can_shutdown() override { return true; }
-    virtual const char* purpose() const override { return "ACPI Parser"; }
+    virtual StringView purpose() const override { return "ACPI Parser"; }
 
 protected:
     explicit DynamicParser(PhysicalAddress rsdp);

Kernel/Bus/USB/UHCIController.h

@@ -29,7 +29,7 @@ public:
 
     virtual ~UHCIController() override;
 
-    virtual const char* purpose() const override { return "UHCI"; }
+    virtual StringView purpose() const override { return "UHCI"; }
 
     void reset();
     void stop();

Kernel/ConsoleDevice.h

@@ -27,7 +27,7 @@ public:
     virtual bool can_write(const Kernel::FileDescription&, size_t) const override { return true; }
     virtual Kernel::KResultOr<size_t> read(FileDescription&, u64, Kernel::UserOrKernelBuffer&, size_t) override;
     virtual Kernel::KResultOr<size_t> write(FileDescription&, u64, const Kernel::UserOrKernelBuffer&, size_t) override;
-    virtual const char* class_name() const override { return "Console"; }
+    virtual StringView class_name() const override { return "Console"; }
 
     void put_char(char);
 

Kernel/Devices/FullDevice.h

@@ -28,7 +28,7 @@ private:
     virtual KResultOr<size_t> write(FileDescription&, u64, const UserOrKernelBuffer&, size_t) override;
     virtual bool can_read(const FileDescription&, size_t) const override;
     virtual bool can_write(const FileDescription&, size_t) const override { return true; }
-    virtual const char* class_name() const override { return "FullDevice"; }
+    virtual StringView class_name() const override { return "FullDevice"; }
 };
 
 }

Kernel/Devices/HID/KeyboardDevice.h

@@ -54,7 +54,7 @@ protected:
     mutable SpinLock<u8> m_queue_lock;
     CircularQueue<Event, 16> m_queue;
     // ^CharacterDevice
-    virtual const char* class_name() const override { return "KeyboardDevice"; }
+    virtual StringView class_name() const override { return "KeyboardDevice"; }
 
     u8 m_modifiers { 0 };
     bool m_caps_lock_to_ctrl_pressed { false };

Kernel/Devices/HID/MouseDevice.h

@@ -39,7 +39,7 @@ public:
 protected:
     MouseDevice();
     // ^CharacterDevice
-    virtual const char* class_name() const override { return "MouseDevice"; }
+    virtual StringView class_name() const override { return "MouseDevice"; }
 
     mutable SpinLock<u8> m_queue_lock;
     CircularQueue<MousePacket, 100> m_queue;

Kernel/Devices/HID/PS2KeyboardDevice.h

@@ -26,7 +26,7 @@ public:
     virtual ~PS2KeyboardDevice() override;
     bool initialize();
 
-    virtual const char* purpose() const override { return class_name(); }
+    virtual StringView purpose() const override { return class_name(); }
 
     // ^I8042Device
     virtual void irq_handle_byte_read(u8 byte) override;
@@ -42,7 +42,7 @@ private:
     virtual bool handle_irq(const RegisterState&) override;
 
     // ^CharacterDevice
-    virtual const char* class_name() const override { return "KeyboardDevice"; }
+    virtual StringView class_name() const override { return "KeyboardDevice"; }
 };
 
 }

Kernel/Devices/HID/PS2MouseDevice.h

@@ -23,7 +23,7 @@ public:
 
     virtual ~PS2MouseDevice() override;
 
-    virtual const char* purpose() const override { return class_name(); }
+    virtual StringView purpose() const override { return class_name(); }
 
     // ^I8042Device
     virtual void irq_handle_byte_read(u8 byte) override;

Kernel/Devices/MemoryDevice.h

@@ -27,7 +27,7 @@ public:
 
 private:
     MemoryDevice();
-    virtual const char* class_name() const override { return "MemoryDevice"; }
+    virtual StringView class_name() const override { return "MemoryDevice"; }
     virtual bool can_read(const FileDescription&, size_t) const override { return true; }
     virtual bool can_write(const FileDescription&, size_t) const override { return false; }
     virtual bool is_seekable() const override { return true; }

Kernel/Devices/NullDevice.h

@@ -29,7 +29,7 @@ private:
     virtual KResultOr<size_t> write(FileDescription&, u64, const UserOrKernelBuffer&, size_t) override;
     virtual bool can_write(const FileDescription&, size_t) const override { return true; }
     virtual bool can_read(const FileDescription&, size_t) const override;
-    virtual const char* class_name() const override { return "NullDevice"; }
+    virtual StringView class_name() const override { return "NullDevice"; }
 };
 
 }

Kernel/Devices/RandomDevice.h

@@ -28,7 +28,7 @@ private:
     virtual KResultOr<size_t> write(FileDescription&, u64, const UserOrKernelBuffer&, size_t) override;
     virtual bool can_read(const FileDescription&, size_t) const override;
     virtual bool can_write(const FileDescription&, size_t) const override { return true; }
-    virtual const char* class_name() const override { return "RandomDevice"; }
+    virtual StringView class_name() const override { return "RandomDevice"; }
 };
 
 }

Kernel/Devices/SB16.h

@@ -32,7 +32,7 @@ public:
     virtual KResultOr<size_t> write(FileDescription&, u64, const UserOrKernelBuffer&, size_t) override;
     virtual bool can_write(const FileDescription&, size_t) const override { return true; }
 
-    virtual const char* purpose() const override { return class_name(); }
+    virtual StringView purpose() const override { return class_name(); }
 
     // ^Device
     virtual mode_t required_mode() const override { return 0220; }
@@ -43,7 +43,7 @@ private:
     virtual bool handle_irq(const RegisterState&) override;
 
     // ^CharacterDevice
-    virtual const char* class_name() const override { return "SB16"; }
+    virtual StringView class_name() const override { return "SB16"; }
 
     void initialize();
     void wait_for_irq();

Kernel/Devices/SerialDevice.h

@@ -112,7 +112,7 @@ private:
     SerialDevice(IOAddress base_addr, unsigned minor);
 
     // ^CharacterDevice
-    virtual const char* class_name() const override { return "SerialDevice"; }
+    virtual StringView class_name() const override { return "SerialDevice"; }
 
     void initialize();
     void set_interrupts(bool interrupt_enable);

Kernel/Devices/ZeroDevice.h

@@ -27,7 +27,7 @@ private:
     virtual KResultOr<size_t> write(FileDescription&, u64, const UserOrKernelBuffer&, size_t) override;
     virtual bool can_read(const FileDescription&, size_t) const override;
     virtual bool can_write(const FileDescription&, size_t) const override { return true; }
-    virtual const char* class_name() const override { return "ZeroDevice"; }
+    virtual StringView class_name() const override { return "ZeroDevice"; }
 };
 
 }

Kernel/FileSystem/AnonymousFile.h

@@ -22,7 +22,7 @@ public:
     virtual KResultOr<Region*> mmap(Process&, FileDescription&, const Range&, u64 offset, int prot, bool shared) override;
 
 private:
-    virtual const char* class_name() const override { return "AnonymousFile"; }
+    virtual StringView class_name() const override { return "AnonymousFile"; }
     virtual String absolute_path(const FileDescription&) const override { return ":anonymous-file:"; }
     virtual bool can_read(const FileDescription&, size_t) const override { return false; }
     virtual bool can_write(const FileDescription&, size_t) const override { return false; }

Kernel/FileSystem/FIFO.h

@@ -46,7 +46,7 @@ private:
     virtual bool can_read(const FileDescription&, size_t) const override;
     virtual bool can_write(const FileDescription&, size_t) const override;
     virtual String absolute_path(const FileDescription&) const override;
-    virtual const char* class_name() const override { return "FIFO"; }
+    virtual StringView class_name() const override { return "FIFO"; }
     virtual bool is_fifo() const override { return true; }
 
     explicit FIFO(uid_t);

Kernel/FileSystem/File.h

@@ -97,7 +97,7 @@ public:
     virtual KResult chown(FileDescription&, uid_t, gid_t) { return EBADF; }
     virtual KResult chmod(FileDescription&, mode_t) { return EBADF; }
 
-    virtual const char* class_name() const = 0;
+    virtual StringView class_name() const = 0;
 
     virtual bool is_seekable() const { return false; }
 

Kernel/FileSystem/InodeFile.h

@@ -42,7 +42,7 @@ public:
     virtual KResult chown(FileDescription&, uid_t, gid_t) override;
     virtual KResult chmod(FileDescription&, mode_t) override;
 
-    virtual const char* class_name() const override { return "InodeFile"; }
+    virtual StringView class_name() const override { return "InodeFile"; }
 
     virtual bool is_seekable() const override { return true; }
     virtual bool is_inode() const override { return true; }

Kernel/FileSystem/InodeWatcher.h

@@ -55,7 +55,7 @@ public:
     virtual KResult close() override;
 
     virtual String absolute_path(const FileDescription&) const override;
-    virtual const char* class_name() const override { return "InodeWatcher"; };
+    virtual StringView class_name() const override { return "InodeWatcher"; };
     virtual bool is_inode_watcher() const override { return true; }
 
     void notify_inode_event(Badge<Inode>, InodeIdentifier, InodeWatcherEvent::Type, String const& name = {});

Kernel/Graphics/FramebufferDevice.h

@@ -38,7 +38,7 @@ public:
 
 private:
     // ^File
-    virtual const char* class_name() const override { return "FramebufferDevice"; }
+    virtual StringView class_name() const override { return "FramebufferDevice"; }
 
     virtual bool can_read(const FileDescription&, size_t) const override final { return true; }
     virtual bool can_write(const FileDescription&, size_t) const override final { return true; }

Kernel/Graphics/VirtIOGPU/VirtIOFrameBufferDevice.h

@@ -51,7 +51,7 @@ public:
     u8* framebuffer_data();
 
 private:
-    virtual const char* class_name() const override { return "VirtIOFrameBuffer"; }
+    virtual StringView class_name() const override { return "VirtIOFrameBuffer"; }
 
     VirtIOGPURespDisplayInfo::VirtIOGPUDisplayOne const& display_info() const;
     VirtIOGPURespDisplayInfo::VirtIOGPUDisplayOne& display_info();

Kernel/Interrupts/APIC.cpp

@@ -76,8 +76,8 @@ public:
     virtual bool eoi() override;
 
     virtual HandlerType type() const override { return HandlerType::IRQHandler; }
-    virtual const char* purpose() const override { return "IPI Handler"; }
+    virtual StringView purpose() const override { return "IPI Handler"; }
-    virtual const char* controller() const override { return nullptr; }
+    virtual StringView controller() const override { return nullptr; }
 
     virtual size_t sharing_devices_count() const override { return 0; }
     virtual bool is_shared_handler() const override { return false; }
@@ -107,8 +107,8 @@ public:
     virtual bool eoi() override;
 
     virtual HandlerType type() const override { return HandlerType::IRQHandler; }
-    virtual const char* purpose() const override { return "SMP Error Handler"; }
+    virtual StringView purpose() const override { return "SMP Error Handler"; }
-    virtual const char* controller() const override { return nullptr; }
+    virtual StringView controller() const override { return nullptr; }
 
     virtual size_t sharing_devices_count() const override { return 0; }
     virtual bool is_shared_handler() const override { return false; }

Kernel/Interrupts/GenericInterruptHandler.h

@@ -45,8 +45,8 @@ public:
     virtual bool is_sharing_with_others() const = 0;
 
     virtual HandlerType type() const = 0;
-    virtual const char* purpose() const = 0;
+    virtual StringView purpose() const = 0;
-    virtual const char* controller() const = 0;
+    virtual StringView controller() const = 0;
 
     virtual bool eoi() = 0;
     ALWAYS_INLINE void increment_invoking_counter()

Kernel/Interrupts/IRQHandler.h

@@ -27,8 +27,8 @@ public:
     virtual bool eoi() override;
 
     virtual HandlerType type() const override { return HandlerType::IRQHandler; }
-    virtual const char* purpose() const override { return "IRQ Handler"; }
+    virtual StringView purpose() const override { return "IRQ Handler"; }
-    virtual const char* controller() const override { return m_responsible_irq_controller->model(); }
+    virtual StringView controller() const override { return m_responsible_irq_controller->model(); }
 
     virtual size_t sharing_devices_count() const override { return 0; }
     virtual bool is_shared_handler() const override { return false; }

Kernel/Interrupts/SharedIRQHandler.h

@@ -33,8 +33,8 @@ public:
     virtual bool is_sharing_with_others() const override { return false; }
 
     virtual HandlerType type() const override { return HandlerType::SharedIRQHandler; }
-    virtual const char* purpose() const override { return "Shared IRQ Handler"; }
+    virtual StringView purpose() const override { return "Shared IRQ Handler"; }
-    virtual const char* controller() const override { return m_responsible_irq_controller->model(); }
+    virtual StringView controller() const override { return m_responsible_irq_controller->model(); }
 
 private:
     void enable_interrupt_vector();

Kernel/Interrupts/SpuriousInterruptHandler.cpp

@@ -38,7 +38,7 @@ bool SpuriousInterruptHandler::eoi()
     return false;
 }
 
-const char* SpuriousInterruptHandler::purpose() const
+StringView SpuriousInterruptHandler::purpose() const
 {
     if (!m_real_handler)
         return "Spurious Interrupt Handler";
@@ -87,7 +87,7 @@ void SpuriousInterruptHandler::disable_interrupt_vector()
     m_responsible_irq_controller->disable(*this);
 }
 
-const char* SpuriousInterruptHandler::controller() const
+StringView SpuriousInterruptHandler::controller() const
 {
     if (m_responsible_irq_controller->type() == IRQControllerType::i82093AA)
         return "";

Kernel/Interrupts/SpuriousInterruptHandler.h

@@ -29,8 +29,8 @@ public:
     virtual bool is_sharing_with_others() const override { return false; }
 
     virtual HandlerType type() const override { return HandlerType::SpuriousInterruptHandler; }
-    virtual const char* purpose() const override;
+    virtual StringView purpose() const override;
-    virtual const char* controller() const override;
+    virtual StringView controller() const override;
 
 private:
     void enable_interrupt_vector();

Kernel/Interrupts/UnhandledInterruptHandler.h

@@ -21,8 +21,8 @@ public:
     [[noreturn]] virtual bool eoi() override;
 
     virtual HandlerType type() const override { return HandlerType::UnhandledInterruptHandler; }
-    virtual const char* purpose() const override { return "Unhandled Interrupt Handler"; }
+    virtual StringView purpose() const override { return "Unhandled Interrupt Handler"; }
-    virtual const char* controller() const override { VERIFY_NOT_REACHED(); }
+    virtual StringView controller() const override { VERIFY_NOT_REACHED(); }
 
     virtual size_t sharing_devices_count() const override { return 0; }
     virtual bool is_shared_handler() const override { return false; }

Kernel/Net/E1000ENetworkAdapter.h

@@ -27,7 +27,7 @@ public:
 
     virtual ~E1000ENetworkAdapter() override;
 
-    virtual const char* purpose() const override { return class_name(); }
+    virtual StringView purpose() const override { return class_name(); }
 
 private:
     E1000ENetworkAdapter(PCI::Address, u8 irq);

Kernel/Net/E1000NetworkAdapter.h

@@ -29,7 +29,7 @@ public:
     virtual void send_raw(ReadonlyBytes) override;
     virtual bool link_up() override;
 
-    virtual const char* purpose() const override { return class_name(); }
+    virtual StringView purpose() const override { return class_name(); }
 
 protected:
     void setup_interrupts();

Kernel/Net/IPv4Socket.h

@@ -75,7 +75,7 @@ public:
 
 protected:
     IPv4Socket(int type, int protocol);
-    virtual const char* class_name() const override { return "IPv4Socket"; }
+    virtual StringView class_name() const override { return "IPv4Socket"; }
 
     PortAllocationResult allocate_local_port_if_needed();
 

Kernel/Net/LocalSocket.h

@@ -52,7 +52,7 @@ public:
 
 private:
     explicit LocalSocket(int type);
-    virtual const char* class_name() const override { return "LocalSocket"; }
+    virtual StringView class_name() const override { return "LocalSocket"; }
     virtual bool is_local() const override { return true; }
     bool has_attached_peer(const FileDescription&) const;
     DoubleBuffer* receive_buffer_for(FileDescription&);

Kernel/Net/NE2000NetworkAdapter.h

@@ -25,7 +25,7 @@ public:
     virtual void send_raw(ReadonlyBytes) override;
     virtual bool link_up() override { return m_link_up; }
 
-    virtual const char* purpose() const override { return class_name(); }
+    virtual StringView purpose() const override { return class_name(); }
 
 private:
     NE2000NetworkAdapter(PCI::Address, u8 irq);

Kernel/Net/RTL8139NetworkAdapter.h

@@ -27,7 +27,7 @@ public:
     virtual void send_raw(ReadonlyBytes) override;
     virtual bool link_up() override { return m_link_up; }
 
-    virtual const char* purpose() const override { return class_name(); }
+    virtual StringView purpose() const override { return class_name(); }
 
 private:
     RTL8139NetworkAdapter(PCI::Address, u8 irq);

Kernel/Net/RTL8168NetworkAdapter.h

@@ -27,7 +27,7 @@ public:
     virtual void send_raw(ReadonlyBytes) override;
     virtual bool link_up() override { return m_link_up; }
 
-    virtual const char* purpose() const override { return class_name(); }
+    virtual StringView purpose() const override { return class_name(); }
 
 private:
     // FIXME: should this be increased? (maximum allowed here is 1024) - memory usage vs packet loss chance tradeoff

Kernel/Net/Socket.h

@@ -124,7 +124,7 @@ protected:
     size_t backlog() const { return m_backlog; }
     void set_backlog(size_t backlog) { m_backlog = backlog; }
 
-    virtual const char* class_name() const override { return "Socket"; }
+    virtual StringView class_name() const override { return "Socket"; }
 
     virtual void shut_down_for_reading() { }
     virtual void shut_down_for_writing() { }

Kernel/Net/TCPSocket.h

@@ -164,7 +164,7 @@ protected:
 
 private:
     explicit TCPSocket(int protocol);
-    virtual const char* class_name() const override { return "TCPSocket"; }
+    virtual StringView class_name() const override { return "TCPSocket"; }
 
     static NetworkOrdered<u16> compute_tcp_checksum(const IPv4Address& source, const IPv4Address& destination, const TCPPacket&, u16 payload_size);
 

Kernel/Net/UDPSocket.h

@@ -21,7 +21,7 @@ public:
 
 private:
     explicit UDPSocket(int protocol);
-    virtual const char* class_name() const override { return "UDPSocket"; }
+    virtual StringView class_name() const override { return "UDPSocket"; }
     static Lockable<HashMap<u16, UDPSocket*>>& sockets_by_port();
 
     virtual KResultOr<size_t> protocol_receive(ReadonlyBytes raw_ipv4_packet, UserOrKernelBuffer& buffer, size_t buffer_size, int flags) override;

Kernel/Storage/AHCIPortHandler.h

@@ -37,7 +37,7 @@ public:
     virtual ~AHCIPortHandler() override;
 
     RefPtr<StorageDevice> device_at_port(size_t port_index) const;
-    virtual const char* purpose() const override { return "SATA Port Handler"; }
+    virtual StringView purpose() const override { return "SATA Port Handler"; }
 
     AHCI::HBADefinedCapabilities hba_capabilities() const;
     NonnullRefPtr<AHCIController> hba_controller() const { return m_parent_controller; }

Kernel/Storage/IDEChannel.h

@@ -99,7 +99,7 @@ public:
     RefPtr<StorageDevice> master_device() const;
     RefPtr<StorageDevice> slave_device() const;
 
-    virtual const char* purpose() const override { return "PATA Channel"; }
+    virtual StringView purpose() const override { return "PATA Channel"; }
 
     virtual bool is_dma_enabled() const { return false; }
 

Kernel/Storage/PATADiskDevice.cpp

@@ -32,7 +32,7 @@ UNMAP_AFTER_INIT PATADiskDevice::~PATADiskDevice()
 {
 }
 
-const char* PATADiskDevice::class_name() const
+StringView PATADiskDevice::class_name() const
 {
     return "PATADiskDevice";
 }

Kernel/Storage/PATADiskDevice.h

@@ -48,7 +48,7 @@ private:
     PATADiskDevice(const IDEController&, IDEChannel&, DriveType, InterfaceType, u16, u64);
 
     // ^DiskDevice
-    virtual const char* class_name() const override;
+    virtual StringView class_name() const override;
 
     bool is_slave() const;
 

Kernel/Storage/Partition/DiskPartition.cpp

@@ -72,7 +72,7 @@ String DiskPartition::device_name() const
     return String::formatted("{}{}", m_device->device_name(), partition_index + 1);
 }
 
-const char* DiskPartition::class_name() const
+StringView DiskPartition::class_name() const
 {
     return "DiskPartition";
 }

Kernel/Storage/Partition/DiskPartition.h

@@ -32,7 +32,7 @@ public:
     const DiskPartitionMetadata& metadata() const;
 
 private:
-    virtual const char* class_name() const override;
+    virtual StringView class_name() const override;
 
     DiskPartition(BlockDevice&, unsigned, DiskPartitionMetadata);
 

Kernel/Storage/RamdiskDevice.cpp

@@ -28,7 +28,7 @@ RamdiskDevice::~RamdiskDevice()
 {
 }
 
-const char* RamdiskDevice::class_name() const
+StringView RamdiskDevice::class_name() const
 {
     return "RamdiskDevice";
 }

Kernel/Storage/RamdiskDevice.h

@@ -25,7 +25,7 @@ public:
     virtual void start_request(AsyncBlockDeviceRequest&) override;
 
     // ^DiskDevice
-    virtual const char* class_name() const override;
+    virtual StringView class_name() const override;
     virtual String device_name() const override;
 
     bool is_slave() const;

Kernel/Storage/SATADiskDevice.cpp

@@ -28,7 +28,7 @@ SATADiskDevice::~SATADiskDevice()
 {
 }
 
-const char* SATADiskDevice::class_name() const
+StringView SATADiskDevice::class_name() const
 {
     return "SATADiskDevice";
 }

Kernel/Storage/SATADiskDevice.h

@@ -36,7 +36,7 @@ private:
     SATADiskDevice(const AHCIController&, const AHCIPort&, size_t sector_size, u64 max_addressable_block);
 
     // ^DiskDevice
-    virtual const char* class_name() const override;
+    virtual StringView class_name() const override;
     NonnullRefPtr<AHCIPort> m_port;
 };
 

Kernel/Storage/StorageDevice.cpp

@@ -27,7 +27,7 @@ StorageDevice::StorageDevice(const StorageController& controller, int major, int
 {
 }
 
-const char* StorageDevice::class_name() const
+StringView StorageDevice::class_name() const
 {
     return "StorageDevice";
 }

Kernel/Storage/StorageDevice.h

@@ -36,7 +36,7 @@ protected:
     StorageDevice(const StorageController&, size_t, u64);
     StorageDevice(const StorageController&, int, int, size_t, u64);
     // ^DiskDevice
-    virtual const char* class_name() const override;
+    virtual StringView class_name() const override;
 
 private:
     NonnullRefPtr<StorageController> m_storage_controller;

Kernel/TTY/MasterPTY.h

@@ -41,7 +41,7 @@ private:
     virtual KResult close() override;
     virtual bool is_master_pty() const override { return true; }
     virtual int ioctl(FileDescription&, unsigned request, FlatPtr arg) override;
-    virtual const char* class_name() const override { return "MasterPTY"; }
+    virtual StringView class_name() const override { return "MasterPTY"; }
 
     RefPtr<SlavePTY> m_slave;
     unsigned m_index;

Kernel/TTY/PTYMultiplexer.h

@@ -41,7 +41,7 @@ public:
 
 private:
     // ^CharacterDevice
-    virtual const char* class_name() const override { return "PTYMultiplexer"; }
+    virtual StringView class_name() const override { return "PTYMultiplexer"; }
 
     Lock m_lock { "PTYMultiplexer" };
     Vector<unsigned> m_freelist;

Kernel/TTY/SlavePTY.h

@@ -34,7 +34,7 @@ private:
     virtual bool can_read(const FileDescription&, size_t) const override;
     virtual KResultOr<size_t> read(FileDescription&, u64, UserOrKernelBuffer&, size_t) override;
     virtual bool can_write(const FileDescription&, size_t) const override;
-    virtual const char* class_name() const override { return "SlavePTY"; }
+    virtual StringView class_name() const override { return "SlavePTY"; }
     virtual KResult close() override;
 
     // ^Device

Kernel/TTY/VirtualConsole.h

@@ -105,7 +105,7 @@ private:
     virtual void set_cursor_style(VT::CursorStyle) override;
 
     // ^CharacterDevice
-    virtual const char* class_name() const override { return "VirtualConsole"; }
+    virtual StringView class_name() const override { return "VirtualConsole"; }
 
     // ^Device
     virtual String device_name() const override;

Kernel/Time/HardwareTimer.h

@@ -67,7 +67,7 @@ public:
         IRQHandler::will_be_destroyed();
     }
 
-    virtual const char* purpose() const override
+    virtual StringView purpose() const override
     {
         if (TimeManagement::the().is_system_timer(*this))
             return "System Timer";
@@ -118,7 +118,7 @@ public:
         GenericInterruptHandler::will_be_destroyed();
     }
 
-    virtual const char* purpose() const override
+    virtual StringView purpose() const override
     {
         return model();
     }
@@ -134,7 +134,7 @@ public:
     virtual bool is_shared_handler() const override { return false; }
     virtual bool is_sharing_with_others() const override { return false; }
     virtual HandlerType type() const override { return HandlerType::IRQHandler; }
-    virtual const char* controller() const override { return nullptr; }
+    virtual StringView controller() const override { return nullptr; }
     virtual bool eoi() override;
 
     virtual u32 frequency() const override { return (u32)m_frequency; }

Kernel/VirtIO/VirtIOConsole.h

@@ -21,7 +21,7 @@ public:
     VirtIOConsole(PCI::Address);
     virtual ~VirtIOConsole() override = default;
 
-    virtual const char* purpose() const override { return "VirtIOConsole"; }
+    virtual StringView purpose() const override { return "VirtIOConsole"; }
 
     unsigned device_id() const
     {

Kernel/VirtIO/VirtIOConsolePort.h

@@ -32,7 +32,7 @@ public:
 private:
     constexpr static size_t RINGBUFFER_SIZE = 2 * PAGE_SIZE;
 
-    virtual const char* class_name() const override { return "VirtIOConsolePort"; }
+    virtual StringView class_name() const override { return "VirtIOConsolePort"; }
 
     virtual bool can_read(const FileDescription&, size_t) const override;
     virtual KResultOr<size_t> read(FileDescription&, u64, UserOrKernelBuffer&, size_t) override;

Kernel/VirtIO/VirtIORNG.h

@@ -17,8 +17,8 @@ namespace Kernel {
 class VirtIORNG final : public CharacterDevice
     , public VirtIODevice {
 public:
-    virtual const char* purpose() const override { return class_name(); }
+    virtual StringView purpose() const override { return class_name(); }
-    virtual const char* class_name() const override { return m_class_name.characters(); }
+    virtual StringView class_name() const override { return m_class_name; }
 
     virtual bool can_read(const FileDescription&, size_t) const override { return false; }
     virtual KResultOr<size_t> read(FileDescription&, u64, UserOrKernelBuffer&, size_t) override { return 0; }