FltFreeExtraCreateParameter function (fltkernel.h)
The FltFreeExtraCreateParameter routine frees the memory for an ECP context structure.
Syntax
VOID FLTAPI FltFreeExtraCreateParameter(
[in] PFLT_FILTER Filter,
[in] PVOID EcpContext
);
Parameters
[in] Filter
Opaque filter pointer for the minifilter driver. This pointer uniquely identifies the minifilter driver and remains constant as long as the minifilter driver is loaded.
[in] EcpContext
Pointer to the extra create parameter (ECP) context structure to be freed.
Return value
None.
Remarks
If the ECP context structure to be freed is still attached to an ECP list, it must first be detached from the list by the FltRemoveExtraCreateParameter routine before the FltFreeExtraCreateParameter routine can be called to free it.
If a cleanup callback routine of type PFSRTL_EXTRA_CREATE_PARAMETER_CLEANUP_CALLBACK was defined for the given ECP context structure, this callback routine is invoked upon deletion of the ECP context structure. For more information, see PFSRTL_EXTRA_CREATE_PARAMETER_CLEANUP_CALLBACK.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | This routine is available starting with Windows Vista. |
| Target Platform | Universal |
| Header | fltkernel.h (include Fltkernel.h) |
| Library | FltMgr.lib |
| DLL | FltMgr.sys |
| IRQL | <= APC_LEVEL |
See also
FltAllocateExtraCreateParameter
FltAllocateExtraCreateParameterFromLookasideList