Kernel: Use u64 instead of size_t for File::can_write offset

This ensures offsets will not be truncated on large files on i686.

Kernel/Bus/VirtIO/ConsolePort.cpp

@@ -115,7 +115,7 @@ ErrorOr<size_t> ConsolePort::read(OpenFileDescription& desc, u64, UserOrKernelBu
     return bytes_copied;
 }
 
-bool ConsolePort::can_write(const OpenFileDescription&, size_t) const
+bool ConsolePort::can_write(const OpenFileDescription&, u64) const
 {
     return m_console.get_queue(m_transmit_queue).has_free_slots() && m_transmit_buffer->has_space();
 }

Kernel/Bus/VirtIO/ConsolePort.h

@@ -39,7 +39,7 @@ private:
 
     virtual bool can_read(const OpenFileDescription&, u64) const override;
     virtual ErrorOr<size_t> read(OpenFileDescription&, u64, UserOrKernelBuffer&, size_t) override;
-    virtual bool can_write(const OpenFileDescription&, size_t) const override;
+    virtual bool can_write(const OpenFileDescription&, u64) const override;
     virtual ErrorOr<size_t> write(OpenFileDescription&, u64, const UserOrKernelBuffer&, size_t) override;
     virtual ErrorOr<NonnullRefPtr<OpenFileDescription>> open(int options) override;
 

Kernel/Devices/Audio/AC97.h

@@ -32,7 +32,7 @@ public:
 
     // ^CharacterDevice
     virtual bool can_read(const OpenFileDescription&, u64) const override { return false; }
-    virtual bool can_write(const OpenFileDescription&, size_t) const override { return true; }
+    virtual bool can_write(const OpenFileDescription&, u64) const override { return true; }
     virtual ErrorOr<void> ioctl(OpenFileDescription&, unsigned, Userspace<void*>) override;
     virtual ErrorOr<size_t> read(OpenFileDescription&, u64, UserOrKernelBuffer&, size_t) override;
     virtual ErrorOr<size_t> write(OpenFileDescription&, u64, const UserOrKernelBuffer&, size_t) override;

Kernel/Devices/Audio/SB16.h

@@ -29,7 +29,7 @@ public:
     virtual bool can_read(const OpenFileDescription&, u64) const override;
     virtual ErrorOr<size_t> read(OpenFileDescription&, u64, UserOrKernelBuffer&, size_t) override;
     virtual ErrorOr<size_t> write(OpenFileDescription&, u64, const UserOrKernelBuffer&, size_t) override;
-    virtual bool can_write(const OpenFileDescription&, size_t) const override { return true; }
+    virtual bool can_write(const OpenFileDescription&, u64) const override { return true; }
 
     virtual StringView purpose() const override { return class_name(); }
 

Kernel/Devices/ConsoleDevice.h

@@ -22,7 +22,7 @@ public:
 
     // ^CharacterDevice
     virtual bool can_read(const Kernel::OpenFileDescription&, u64) const override;
-    virtual bool can_write(const Kernel::OpenFileDescription&, size_t) const override { return true; }
+    virtual bool can_write(const Kernel::OpenFileDescription&, u64) const override { return true; }
     virtual ErrorOr<size_t> read(OpenFileDescription&, u64, Kernel::UserOrKernelBuffer&, size_t) override;
     virtual ErrorOr<size_t> write(OpenFileDescription&, u64, const Kernel::UserOrKernelBuffer&, size_t) override;
     virtual StringView class_name() const override { return "Console"sv; }

Kernel/Devices/DeviceControlDevice.h

@@ -25,7 +25,7 @@ private:
     virtual ErrorOr<size_t> read(OpenFileDescription&, u64, UserOrKernelBuffer&, size_t) override;
     virtual ErrorOr<size_t> write(OpenFileDescription&, u64, const UserOrKernelBuffer&, size_t) override { return Error::from_errno(ENOTSUP); }
     virtual bool can_read(const OpenFileDescription&, u64) const override;
-    virtual bool can_write(const OpenFileDescription&, size_t) const override { return false; }
+    virtual bool can_write(const OpenFileDescription&, u64) const override { return false; }
     virtual StringView class_name() const override { return "DeviceControlDevice"sv; }
 };
 

Kernel/Devices/FullDevice.h

@@ -24,7 +24,7 @@ private:
     virtual ErrorOr<size_t> read(OpenFileDescription&, u64, UserOrKernelBuffer&, size_t) override;
     virtual ErrorOr<size_t> write(OpenFileDescription&, u64, const UserOrKernelBuffer&, size_t) override;
     virtual bool can_read(const OpenFileDescription&, u64) const override;
-    virtual bool can_write(const OpenFileDescription&, size_t) const override { return true; }
+    virtual bool can_write(const OpenFileDescription&, u64) const override { return true; }
     virtual StringView class_name() const override { return "FullDevice"sv; }
 };
 

Kernel/Devices/HID/KeyboardDevice.h

@@ -28,7 +28,7 @@ public:
     virtual ErrorOr<size_t> read(OpenFileDescription&, u64, UserOrKernelBuffer&, size_t) override;
     virtual bool can_read(const OpenFileDescription&, u64) const override;
     virtual ErrorOr<size_t> write(OpenFileDescription&, u64, const UserOrKernelBuffer&, size_t) override { return EINVAL; }
-    virtual bool can_write(const OpenFileDescription&, size_t) const override { return true; }
+    virtual bool can_write(const OpenFileDescription&, u64) const override { return true; }
 
     // ^HIDDevice
     virtual Type instrument_type() const override { return Type::Keyboard; }

Kernel/Devices/HID/MouseDevice.h

@@ -26,7 +26,7 @@ public:
     virtual ErrorOr<size_t> read(OpenFileDescription&, u64, UserOrKernelBuffer&, size_t) override;
     virtual bool can_read(const OpenFileDescription&, u64) const override;
     virtual ErrorOr<size_t> write(OpenFileDescription&, u64, const UserOrKernelBuffer&, size_t) override { return EINVAL; }
-    virtual bool can_write(const OpenFileDescription&, size_t) const override { return true; }
+    virtual bool can_write(const OpenFileDescription&, u64) const override { return true; }
 
     // ^HIDDevice
     virtual Type instrument_type() const override { return Type::Mouse; }

Kernel/Devices/KCOVDevice.h

@@ -31,7 +31,7 @@ protected:
     virtual StringView class_name() const override { return "KCOVDevice"sv; }
 
     virtual bool can_read(const OpenFileDescription&, u64) const override final { return true; }
-    virtual bool can_write(const OpenFileDescription&, size_t) const override final { return true; }
+    virtual bool can_write(const OpenFileDescription&, u64) const override final { return true; }
     virtual void start_request(AsyncBlockDeviceRequest& request) override final { request.complete(AsyncDeviceRequest::Failure); }
     virtual ErrorOr<size_t> read(OpenFileDescription&, u64, UserOrKernelBuffer&, size_t) override { return EINVAL; }
     virtual ErrorOr<size_t> write(OpenFileDescription&, u64, const UserOrKernelBuffer&, size_t) override { return EINVAL; }

Kernel/Devices/MemoryDevice.h

@@ -26,7 +26,7 @@ private:
 
     virtual StringView class_name() const override { return "MemoryDevice"sv; }
     virtual bool can_read(const OpenFileDescription&, u64) const override { return true; }
-    virtual bool can_write(const OpenFileDescription&, size_t) const override { return false; }
+    virtual bool can_write(const OpenFileDescription&, u64) const override { return false; }
     virtual bool is_seekable() const override { return true; }
     virtual ErrorOr<size_t> read(OpenFileDescription&, u64, UserOrKernelBuffer&, size_t) override;
     virtual ErrorOr<size_t> write(OpenFileDescription&, u64, const UserOrKernelBuffer&, size_t) override { return EINVAL; }

Kernel/Devices/NullDevice.h

@@ -23,7 +23,7 @@ private:
     // ^CharacterDevice
     virtual ErrorOr<size_t> read(OpenFileDescription&, u64, UserOrKernelBuffer&, size_t) override;
     virtual ErrorOr<size_t> write(OpenFileDescription&, u64, const UserOrKernelBuffer&, size_t) override;
-    virtual bool can_write(const OpenFileDescription&, size_t) const override { return true; }
+    virtual bool can_write(const OpenFileDescription&, u64) const override { return true; }
     virtual bool can_read(const OpenFileDescription&, u64) const override;
     virtual StringView class_name() const override { return "NullDevice"sv; }
     virtual bool is_seekable() const override { return true; }

Kernel/Devices/RandomDevice.h

@@ -24,7 +24,7 @@ private:
     virtual ErrorOr<size_t> read(OpenFileDescription&, u64, UserOrKernelBuffer&, size_t) override;
     virtual ErrorOr<size_t> write(OpenFileDescription&, u64, const UserOrKernelBuffer&, size_t) override;
     virtual bool can_read(const OpenFileDescription&, u64) const override;
-    virtual bool can_write(const OpenFileDescription&, size_t) const override { return true; }
+    virtual bool can_write(const OpenFileDescription&, u64) const override { return true; }
     virtual StringView class_name() const override { return "RandomDevice"sv; }
 };
 

Kernel/Devices/SerialDevice.cpp

@@ -77,7 +77,7 @@ ErrorOr<size_t> SerialDevice::read(OpenFileDescription&, u64, UserOrKernelBuffer
     });
 }
 
-bool SerialDevice::can_write(const OpenFileDescription&, size_t) const
+bool SerialDevice::can_write(const OpenFileDescription&, u64) const
 {
     return (get_line_status() & EmptyTransmitterHoldingRegister) != 0;
 }

Kernel/Devices/SerialDevice.h

@@ -22,7 +22,7 @@ public:
     // ^CharacterDevice
     virtual bool can_read(const OpenFileDescription&, u64) const override;
     virtual ErrorOr<size_t> read(OpenFileDescription&, u64, UserOrKernelBuffer&, size_t) override;
-    virtual bool can_write(const OpenFileDescription&, size_t) const override;
+    virtual bool can_write(const OpenFileDescription&, u64) const override;
     virtual ErrorOr<size_t> write(OpenFileDescription&, u64, const UserOrKernelBuffer&, size_t) override;
 
     void put_char(char);

Kernel/Devices/ZeroDevice.h

@@ -24,7 +24,7 @@ private:
     virtual ErrorOr<size_t> read(OpenFileDescription&, u64, UserOrKernelBuffer&, size_t) override;
     virtual ErrorOr<size_t> write(OpenFileDescription&, u64, const UserOrKernelBuffer&, size_t) override;
     virtual bool can_read(const OpenFileDescription&, u64) const override;
-    virtual bool can_write(const OpenFileDescription&, size_t) const override { return true; }
+    virtual bool can_write(const OpenFileDescription&, u64) const override { return true; }
     virtual StringView class_name() const override { return "ZeroDevice"sv; }
 };
 

Kernel/FileSystem/AnonymousFile.h

@@ -26,7 +26,7 @@ private:
     virtual StringView class_name() const override { return "AnonymousFile"sv; }
     virtual ErrorOr<NonnullOwnPtr<KString>> pseudo_path(const OpenFileDescription&) const override;
     virtual bool can_read(const OpenFileDescription&, u64) const override { return false; }
-    virtual bool can_write(const OpenFileDescription&, size_t) const override { return false; }
+    virtual bool can_write(const OpenFileDescription&, u64) const override { return false; }
     virtual ErrorOr<size_t> read(OpenFileDescription&, u64, UserOrKernelBuffer&, size_t) override { return ENOTSUP; }
     virtual ErrorOr<size_t> write(OpenFileDescription&, u64, const UserOrKernelBuffer&, size_t) override { return ENOTSUP; }
 

Kernel/FileSystem/FIFO.cpp

@@ -104,7 +104,7 @@ bool FIFO::can_read(const OpenFileDescription&, u64) const
     return !m_buffer->is_empty() || !m_writers;
 }
 
-bool FIFO::can_write(const OpenFileDescription&, size_t) const
+bool FIFO::can_write(const OpenFileDescription&, u64) const
 {
     return m_buffer->space_for_writing() || !m_readers;
 }

Kernel/FileSystem/FIFO.h

@@ -44,7 +44,7 @@ private:
     virtual ErrorOr<size_t> read(OpenFileDescription&, u64, UserOrKernelBuffer&, size_t) override;
     virtual ErrorOr<struct stat> stat() const override;
     virtual bool can_read(const OpenFileDescription&, u64) const override;
-    virtual bool can_write(const OpenFileDescription&, size_t) const override;
+    virtual bool can_write(const OpenFileDescription&, u64) const override;
     virtual ErrorOr<NonnullOwnPtr<KString>> pseudo_path(const OpenFileDescription&) const override;
     virtual StringView class_name() const override { return "FIFO"sv; }
     virtual bool is_fifo() const override { return true; }

Kernel/FileSystem/File.h

@@ -82,7 +82,7 @@ public:
     virtual ErrorOr<void> close();
 
     virtual bool can_read(const OpenFileDescription&, u64) const = 0;
-    virtual bool can_write(const OpenFileDescription&, size_t) const = 0;
+    virtual bool can_write(const OpenFileDescription&, u64) const = 0;
 
     virtual ErrorOr<void> attach(OpenFileDescription&);
     virtual void detach(OpenFileDescription&);

Kernel/FileSystem/InodeFile.h

@@ -28,7 +28,7 @@ public:
     Inode& inode() { return *m_inode; }
 
     virtual bool can_read(const OpenFileDescription&, u64) const override { return true; }
-    virtual bool can_write(const OpenFileDescription&, size_t) const override { return true; }
+    virtual bool can_write(const OpenFileDescription&, u64) const override { return true; }
 
     virtual ErrorOr<size_t> read(OpenFileDescription&, u64, UserOrKernelBuffer&, size_t) override;
     virtual ErrorOr<size_t> write(OpenFileDescription&, u64, const UserOrKernelBuffer&, size_t) override;

Kernel/FileSystem/InodeWatcher.h

@@ -47,7 +47,7 @@ public:
     virtual bool can_read(const OpenFileDescription&, u64) const override;
     virtual ErrorOr<size_t> read(OpenFileDescription&, u64, UserOrKernelBuffer&, size_t) override;
     // Can't write to an inode watcher.
-    virtual bool can_write(const OpenFileDescription&, size_t) const override { return true; }
+    virtual bool can_write(const OpenFileDescription&, u64) const override { return true; }
     virtual ErrorOr<size_t> write(OpenFileDescription&, u64, const UserOrKernelBuffer&, size_t) override { return EIO; }
     virtual ErrorOr<void> close() override;
 

Kernel/Graphics/GenericFramebufferDevice.h

@@ -34,7 +34,7 @@ public:
 private:
     // ^File
     virtual bool can_read(const OpenFileDescription&, u64) const override final { return true; }
-    virtual bool can_write(const OpenFileDescription&, size_t) const override final { return true; }
+    virtual bool can_write(const OpenFileDescription&, u64) const override final { return true; }
     virtual void start_request(AsyncBlockDeviceRequest& request) override final { request.complete(AsyncDeviceRequest::Failure); }
     virtual ErrorOr<size_t> read(OpenFileDescription&, u64, UserOrKernelBuffer&, size_t) override { return EINVAL; }
     virtual ErrorOr<size_t> write(OpenFileDescription&, u64, const UserOrKernelBuffer&, size_t) override { return EINVAL; }

Kernel/Net/IPv4Socket.cpp

@@ -170,7 +170,7 @@ bool IPv4Socket::can_read(const OpenFileDescription&, u64) const
     return m_can_read;
 }
 
-bool IPv4Socket::can_write(const OpenFileDescription&, size_t) const
+bool IPv4Socket::can_write(const OpenFileDescription&, u64) const
 {
     return true;
 }

Kernel/Net/IPv4Socket.h

@@ -38,7 +38,7 @@ public:
     virtual void get_local_address(sockaddr*, socklen_t*) override;
     virtual void get_peer_address(sockaddr*, socklen_t*) override;
     virtual bool can_read(const OpenFileDescription&, u64) const override;
-    virtual bool can_write(const OpenFileDescription&, size_t) const override;
+    virtual bool can_write(const OpenFileDescription&, u64) const override;
     virtual ErrorOr<size_t> sendto(OpenFileDescription&, const UserOrKernelBuffer&, size_t, int, Userspace<const sockaddr*>, socklen_t) override;
     virtual ErrorOr<size_t> recvfrom(OpenFileDescription&, UserOrKernelBuffer&, size_t, int flags, Userspace<sockaddr*>, Userspace<socklen_t*>, Time&) override;
     virtual ErrorOr<void> setsockopt(int level, int option, Userspace<const void*>, socklen_t) override;

Kernel/Net/LocalSocket.cpp

@@ -280,7 +280,7 @@ bool LocalSocket::has_attached_peer(const OpenFileDescription& description) cons
     return false;
 }
 
-bool LocalSocket::can_write(const OpenFileDescription& description, size_t) const
+bool LocalSocket::can_write(const OpenFileDescription& description, u64) const
 {
     auto role = this->role(description);
     if (role == Role::Accepted)

Kernel/Net/LocalSocket.h

@@ -43,7 +43,7 @@ public:
     virtual ErrorOr<void> attach(OpenFileDescription&) override;
     virtual void detach(OpenFileDescription&) override;
     virtual bool can_read(const OpenFileDescription&, u64) const override;
-    virtual bool can_write(const OpenFileDescription&, size_t) const override;
+    virtual bool can_write(const OpenFileDescription&, u64) const override;
     virtual ErrorOr<size_t> sendto(OpenFileDescription&, const UserOrKernelBuffer&, size_t, int, Userspace<const sockaddr*>, socklen_t) override;
     virtual ErrorOr<size_t> recvfrom(OpenFileDescription&, UserOrKernelBuffer&, size_t, int flags, Userspace<sockaddr*>, Userspace<socklen_t*>, Time&) override;
     virtual ErrorOr<void> getsockopt(OpenFileDescription&, int level, int option, Userspace<void*>, Userspace<socklen_t*>) override;

Kernel/Net/TCPSocket.cpp

@@ -614,7 +614,7 @@ void TCPSocket::retransmit_packets()
     });
 }
 
-bool TCPSocket::can_write(const OpenFileDescription& file_description, size_t size) const
+bool TCPSocket::can_write(const OpenFileDescription& file_description, u64 size) const
 {
     if (!IPv4Socket::can_write(file_description, size))
         return false;

Kernel/Net/TCPSocket.h

@@ -159,7 +159,7 @@ public:
 
     virtual ErrorOr<void> close() override;
 
-    virtual bool can_write(const OpenFileDescription&, size_t) const override;
+    virtual bool can_write(const OpenFileDescription&, u64) const override;
 
     static NetworkOrdered<u16> compute_tcp_checksum(IPv4Address const& source, IPv4Address const& destination, TCPPacket const&, u16 payload_size);
 

Kernel/Storage/Partition/DiskPartition.cpp

@@ -68,7 +68,7 @@ ErrorOr<size_t> DiskPartition::write(OpenFileDescription& fd, u64 offset, const
     return m_device.strong_ref()->write(fd, offset + adjust, inbuf, len);
 }
 
-bool DiskPartition::can_write(const OpenFileDescription& fd, size_t offset) const
+bool DiskPartition::can_write(const OpenFileDescription& fd, u64 offset) const
 {
     unsigned adjust = m_metadata.start_block() * block_size();
     dbgln_if(OFFD_DEBUG, "DiskPartition::can_write offset={}, adjust={}", offset, adjust);

Kernel/Storage/Partition/DiskPartition.h

@@ -26,7 +26,7 @@ public:
     virtual ErrorOr<size_t> read(OpenFileDescription&, u64, UserOrKernelBuffer&, size_t) override;
     virtual bool can_read(const OpenFileDescription&, u64) const override;
     virtual ErrorOr<size_t> write(OpenFileDescription&, u64, const UserOrKernelBuffer&, size_t) override;
-    virtual bool can_write(const OpenFileDescription&, size_t) const override;
+    virtual bool can_write(const OpenFileDescription&, u64) const override;
 
     const DiskPartitionMetadata& metadata() const;
 

Kernel/Storage/StorageDevice.cpp

@@ -180,7 +180,7 @@ StringView StorageDevice::early_storage_name() const
     return m_early_storage_device_name->view();
 }
 
-bool StorageDevice::can_write(const OpenFileDescription&, size_t offset) const
+bool StorageDevice::can_write(const OpenFileDescription&, u64 offset) const
 {
     return offset < (max_addressable_block() * block_size());
 }

Kernel/Storage/StorageDevice.h

@@ -40,7 +40,7 @@ public:
     virtual ErrorOr<size_t> read(OpenFileDescription&, u64, UserOrKernelBuffer&, size_t) override;
     virtual bool can_read(const OpenFileDescription&, u64) const override;
     virtual ErrorOr<size_t> write(OpenFileDescription&, u64, const UserOrKernelBuffer&, size_t) override;
-    virtual bool can_write(const OpenFileDescription&, size_t) const override;
+    virtual bool can_write(const OpenFileDescription&, u64) const override;
     virtual void prepare_for_unplug() { m_partitions.clear(); }
 
     // FIXME: Remove this method after figuring out another scheme for naming.

Kernel/TTY/MasterPTY.cpp

@@ -79,7 +79,7 @@ bool MasterPTY::can_read(const OpenFileDescription&, u64) const
     return !m_buffer->is_empty();
 }
 
-bool MasterPTY::can_write(const OpenFileDescription&, size_t) const
+bool MasterPTY::can_write(const OpenFileDescription&, u64) const
 {
     return true;
 }

Kernel/TTY/MasterPTY.h

@@ -34,7 +34,7 @@ private:
     virtual ErrorOr<size_t> read(OpenFileDescription&, u64, UserOrKernelBuffer&, size_t) override;
     virtual ErrorOr<size_t> write(OpenFileDescription&, u64, const UserOrKernelBuffer&, size_t) override;
     virtual bool can_read(const OpenFileDescription&, u64) const override;
-    virtual bool can_write(const OpenFileDescription&, size_t) const override;
+    virtual bool can_write(const OpenFileDescription&, u64) const override;
     virtual ErrorOr<void> close() override;
     virtual bool is_master_pty() const override { return true; }
     virtual ErrorOr<void> ioctl(OpenFileDescription&, unsigned request, Userspace<void*> arg) override;

Kernel/TTY/PTYMultiplexer.h

@@ -27,7 +27,7 @@ public:
     virtual ErrorOr<size_t> read(OpenFileDescription&, u64, UserOrKernelBuffer&, size_t) override { return 0; }
     virtual ErrorOr<size_t> write(OpenFileDescription&, u64, const UserOrKernelBuffer&, size_t) override { return 0; }
     virtual bool can_read(const OpenFileDescription&, u64) const override { return true; }
-    virtual bool can_write(const OpenFileDescription&, size_t) const override { return true; }
+    virtual bool can_write(const OpenFileDescription&, u64) const override { return true; }
 
     void notify_master_destroyed(Badge<MasterPTY>, unsigned index);
 

Kernel/TTY/SlavePTY.cpp

@@ -85,7 +85,7 @@ ErrorOr<size_t> SlavePTY::on_tty_write(const UserOrKernelBuffer& data, size_t si
     return m_master->on_slave_write(data, size);
 }
 
-bool SlavePTY::can_write(const OpenFileDescription&, size_t) const
+bool SlavePTY::can_write(const OpenFileDescription&, u64) const
 {
     return m_master->can_write_from_slave();
 }

Kernel/TTY/SlavePTY.h

@@ -34,7 +34,7 @@ private:
     // ^CharacterDevice
     virtual bool can_read(const OpenFileDescription&, u64) const override;
     virtual ErrorOr<size_t> read(OpenFileDescription&, u64, UserOrKernelBuffer&, size_t) override;
-    virtual bool can_write(const OpenFileDescription&, size_t) const override;
+    virtual bool can_write(const OpenFileDescription&, u64) const override;
     virtual StringView class_name() const override { return "SlavePTY"sv; }
     virtual ErrorOr<void> close() override;
 

Kernel/TTY/TTY.cpp

@@ -147,7 +147,7 @@ bool TTY::can_read(const OpenFileDescription&, u64) const
     return !m_input_buffer.is_empty();
 }
 
-bool TTY::can_write(const OpenFileDescription&, size_t) const
+bool TTY::can_write(const OpenFileDescription&, u64) const
 {
     return true;
 }

Kernel/TTY/TTY.h

@@ -24,7 +24,7 @@ public:
     virtual ErrorOr<size_t> read(OpenFileDescription&, u64, UserOrKernelBuffer&, size_t) override;
     virtual ErrorOr<size_t> write(OpenFileDescription&, u64, const UserOrKernelBuffer&, size_t) override;
     virtual bool can_read(const OpenFileDescription&, u64) const override;
-    virtual bool can_write(const OpenFileDescription&, size_t) const override;
+    virtual bool can_write(const OpenFileDescription&, u64) const override;
     virtual ErrorOr<void> ioctl(OpenFileDescription&, unsigned request, Userspace<void*> arg) override final;
     virtual ErrorOr<NonnullOwnPtr<KString>> pseudo_path(const OpenFileDescription&) const override;