BazisLib::DDK::IODeviceFilter Class Reference

#include <iofilter.h>

Inherits BazisLib::DDK::Filter.

Inherited by BazisLib::DDK::StorageFilter.

Collaboration diagram for BazisLib::DDK::IODeviceFilter:

[legend]

List of all members.

Public Member Functions
	IODeviceFilter (LPCWSTR pwszBaseDeviceName, bool bDeleteThisAfterRemoveRequest=false, LPCWSTR pwszFilterDeviceName=NULL, DEVICE_TYPE FilterDeviceType=FILE_DEVICE_UNKNOWN, ULONG DeviceCharacteristics=FILE_DEVICE_SECURE_OPEN, bool bExclusive=FALSE, ULONG AdditionalDeviceFlags=DO_POWER_PAGABLE)
	~IODeviceFilter ()
Protected Member Functions
virtual NTSTATUS	DispatchRoutine (IN IncomingIrp *Irp, IO_STACK_LOCATION *IrpSp) override
virtual NTSTATUS	FilterCreate (IncomingIrp *pIrp, PIO_SECURITY_CONTEXT SecurityContext, ULONG Options, USHORT FileAttributes, USHORT ShareAccess, PFILE_OBJECT pFileObj)
virtual NTSTATUS	FilterClose (IncomingIrp *pIrp)
virtual NTSTATUS	FilterRead (IncomingIrp *pIrp, void *pBuffer, ULONG Length, ULONG Key, ULONGLONG ByteOffset, PULONG pBytesDone)
virtual NTSTATUS	FilterRead (IncomingIrp *pIrp, PMDL pMdl, ULONG Length, ULONG Key, ULONGLONG ByteOffset, PULONG pBytesDone)
virtual NTSTATUS	FilterWrite (IncomingIrp *pIrp, const void *pBuffer, ULONG Length, ULONG Key, ULONGLONG ByteOffset, PULONG pBytesDone)
virtual NTSTATUS	FilterWrite (IncomingIrp *pIrp, PMDL pMdl, ULONG Length, ULONG Key, ULONGLONG ByteOffset, PULONG pBytesDone)
virtual NTSTATUS	FilterDeviceControl (IncomingIrp *pIrp, ULONG ControlCode, bool IsInternal, void *pInOutBuffer, ULONG InputLength, ULONG OutputLength, PULONG pBytesDone)
virtual NTSTATUS	FilterDeviceControl (IncomingIrp *pIrp, ULONG ControlCode, bool IsInternal, void *pInBuffer, PMDL InOutBuffer, ULONG InputLength, ULONG OutputLength, PULONG pBytesDone)
virtual NTSTATUS	FilterDeviceControl (IncomingIrp *pIrp, ULONG ControlCode, bool IsInternal, void *pUserInputBuffer, void *pUserOutputBuffer, ULONG InputLength, ULONG OutputLength, PULONG pBytesDone)

---

Constructor & Destructor Documentation

BazisLib::DDK::IODeviceFilter::IODeviceFilter	(	LPCWSTR	pwszBaseDeviceName,
		bool	bDeleteThisAfterRemoveRequest = false,
		LPCWSTR	pwszFilterDeviceName = NULL,
		DEVICE_TYPE	FilterDeviceType = FILE_DEVICE_UNKNOWN,
		ULONG	DeviceCharacteristics = FILE_DEVICE_SECURE_OPEN,
		bool	bExclusive = FALSE,
		ULONG	AdditionalDeviceFlags = DO_POWER_PAGABLE
	)

BazisLib::DDK::IODeviceFilter::~IODeviceFilter

(

)

---

Member Function Documentation

virtual NTSTATUS BazisLib::DDK::IODeviceFilter::DispatchRoutine	(	IN IncomingIrp *	Irp,
		IO_STACK_LOCATION *	IrpSp
	)			[override, protected, virtual]

IRP handler for Plug-and-play device. Handles IRP_MJ_PNP requests by calling DispatchPNP().

Reimplemented from BazisLib::DDK::PNPDevice.

virtual NTSTATUS BazisLib::DDK::IODeviceFilter::FilterClose

(

IncomingIrp *

pIrp

)

[inline, protected, virtual]

virtual NTSTATUS BazisLib::DDK::IODeviceFilter::FilterCreate	(	IncomingIrp *	pIrp,
		PIO_SECURITY_CONTEXT	SecurityContext,
		ULONG	Options,
		USHORT	FileAttributes,
		USHORT	ShareAccess,
		PFILE_OBJECT	pFileObj
	)			[inline, protected, virtual]

virtual NTSTATUS BazisLib::DDK::IODeviceFilter::FilterDeviceControl	(	IncomingIrp *	pIrp,
		ULONG	ControlCode,
		bool	IsInternal,
		void *	pUserInputBuffer,
		void *	pUserOutputBuffer,
		ULONG	InputLength,
		ULONG	OutputLength,
		PULONG	pBytesDone
	)			[inline, protected, virtual]

This method is called when the driver receives an IRP_MJ_DEVICE_CONTROL or IRP_MJ_INTERNAL_DEVICE_CONTROL packet with Transfer Type bits set to METHOD_NEITHER

Parameters:

	pUserInputBuffer	Contains the address of the input buffer in USER SPACE!
	pUserOutputBuffer	Contains the address of the output buffer in USER SPACE!

virtual NTSTATUS BazisLib::DDK::IODeviceFilter::FilterDeviceControl	(	IncomingIrp *	pIrp,
		ULONG	ControlCode,
		bool	IsInternal,
		void *	pInBuffer,
		PMDL	InOutBuffer,
		ULONG	InputLength,
		ULONG	OutputLength,
		PULONG	pBytesDone
	)			[inline, protected, virtual]

This method is called when the driver receives an IRP_MJ_DEVICE_CONTROL or IRP_MJ_INTERNAL_DEVICE_CONTROL packet with Transfer Type bits set to METHOD_IN_DIRECT or METHOD_OUT_DIRECT

Parameters:

	pInBuffer	Contains the address of the system buffer shadowing the input buffer.
	InOutBuffer	Contains the MDL for the output buffer that can be used for input of output operation depending on the Transfer Type bits in the IOCTL code.

virtual NTSTATUS BazisLib::DDK::IODeviceFilter::FilterDeviceControl	(	IncomingIrp *	pIrp,
		ULONG	ControlCode,
		bool	IsInternal,
		void *	pInOutBuffer,
		ULONG	InputLength,
		ULONG	OutputLength,
		PULONG	pBytesDone
	)			[inline, protected, virtual]

This method is called when the driver receives an IRP_MJ_DEVICE_CONTROL or IRP_MJ_INTERNAL_DEVICE_CONTROL packet with Transfer Type bits set to METHOD_BUFFERED

Reimplemented in BazisLib::DDK::StorageFilter.

virtual NTSTATUS BazisLib::DDK::IODeviceFilter::FilterRead	(	IncomingIrp *	pIrp,
		PMDL	pMdl,
		ULONG	Length,
		ULONG	Key,
		ULONGLONG	ByteOffset,
		PULONG	pBytesDone
	)			[inline, protected, virtual]

This method is called when the driver receives an IRP_MJ_READ packet. And the DO_DIRECT_IO flag is set in the DEVICE_OBJECT::Flags field.

virtual NTSTATUS BazisLib::DDK::IODeviceFilter::FilterRead	(	IncomingIrp *	pIrp,
		void *	pBuffer,
		ULONG	Length,
		ULONG	Key,
		ULONGLONG	ByteOffset,
		PULONG	pBytesDone
	)			[inline, protected, virtual]

This method is called when the driver receives an IRP_MJ_READ packet. And the DO_BUFFERED_IO flag is set in the DEVICE_OBJECT::Flags field.

virtual NTSTATUS BazisLib::DDK::IODeviceFilter::FilterWrite	(	IncomingIrp *	pIrp,
		PMDL	pMdl,
		ULONG	Length,
		ULONG	Key,
		ULONGLONG	ByteOffset,
		PULONG	pBytesDone
	)			[inline, protected, virtual]

This method is called when the driver receives an IRP_MJ_WRITE packet. And the DO_DIRECT_IO flag is set in the DEVICE_OBJECT::Flags field.

virtual NTSTATUS BazisLib::DDK::IODeviceFilter::FilterWrite	(	IncomingIrp *	pIrp,
		const void *	pBuffer,
		ULONG	Length,
		ULONG	Key,
		ULONGLONG	ByteOffset,
		PULONG	pBytesDone
	)			[inline, protected, virtual]

This method is called when the driver receives an IRP_MJ_WRITE packet. And the DO_BUFFERED_IO flag is set in the DEVICE_OBJECT::Flags field.

---

The documentation for this class was generated from the following file:

• bzsddk/iofilter.h