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FltDeleteExtraCreateParameterLookasideList routine

The FltDeleteExtraCreateParameterLookasideList routine frees an extra create parameter (ECP) lookaside list.

Syntax


VOID FltDeleteExtraCreateParameterLookasideList(
  _In_     PFLT_FILTER Filter,
  _Inout_  PVOID Lookaside,
  _In_     FSRTL_ECP_LOOKASIDE_FLAGS Flags
);

Parameters

Filter [in]

Opaque filter pointer to the minifilter driver. This pointer uniquely identifies the minifilter driver and remains constant as long as the minifilter driver is loaded.

Lookaside [in, out]

Pointer to an opaque PAGED_LOOKASIDE_LIST or NPAGED_LOOKASIDE_LIST lookaside list-head structure that represents the lookaside list to be freed.

Flags [in]

Communicates ECP lookaside list allocation options that were used when the lookaside list was initialized by the FltInitExtraCreateParameterLookasideList routine.

This Flags parameter should be the same as the Flags parameter used in the call to the FltInitExtraCreateParameterLookasideList routine.

Return value

None

Remarks

This routine is available starting with Windows Vista.

The FltDeleteExtraCreateParameterLookasideList routine frees the given ECP lookaside list. However, freeing the lookaside list does not automatically free any ECP context structures allocated from the lookaside list. To free an ECP context structure allocated from a lookaside list, call the FltFreeExtraCreateParameter routine.

Drivers must explicitly free all ECP context structures and ECP lookaside lists that they created before unloading. For more information, see Using Lookaside Lists.

Requirements

Header

Fltkernel.h (include Fltkernel.h)

Library

FltMgr.lib

IRQL

<= APC_LEVEL

See also

ECP_LIST
ExAllocatePoolWithTag
FltAllocateExtraCreateParameter
FltAllocateExtraCreateParameterFromLookasideList
FltAllocateExtraCreateParameterList
FltCreateFileEx2
FltFreeExtraCreateParameter
FltFreeExtraCreateParameterList
FltGetEcpListFromCallbackData
FltInsertExtraCreateParameter
FltRemoveExtraCreateParameter
FltSetEcpListIntoCallbackData
IoCreateFileEx
NPAGED_LOOKASIDE_LIST
PAGED_LOOKASIDE_LIST
PFSRTL_EXTRA_CREATE_PARAMETER_CLEANUP_CALLBACK

 

 

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