FltLoadFilter function (fltkernel.h)

The FltLoadFilter routine dynamically loads a minifilter driver into the currently running system.

Syntax

NTSTATUS FLTAPI FltLoadFilter(
  [in] PCUNICODE_STRING FilterName
);

[in] FilterName

Pointer to a UNICODE_STRING structure containing the service name for the minifilter driver.

FltLoadFilter returns STATUS_SUCCESS or an appropriate NTSTATUS value, such as one of the following:

Return code	Description
STATUS_DRIVER_FAILED_PRIOR_UNLOAD	The minifilter driver could not be loaded because a previous version of the driver is still in memory. This is an error code.
STATUS_FAILED_DRIVER_ENTRY	The minifilter driver's DriverEntry routine returned an NTSTATUS value that was not a success code. This is an error code.
STATUS_IMAGE_ALREADY_LOADED	The minifilter driver is already running. This is an error code.
STATUS_OBJECT_NAME_NOT_FOUND	No matching minifilter driver was found. This is an error code.

A minifilter driver that has a dependency on another minifilter driver can load that minifilter driver by calling FltLoadFilter.

To unload the supporting minifilter driver, call FltUnloadFilter.

Requirement	Value
Target Platform	Universal
Header	fltkernel.h (include Fltkernel.h)
Library	FltMgr.lib
DLL	Fltmgr.sys
IRQL	PASSIVE_LEVEL