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NF:fltkernel.FltReleaseContexts

FltReleaseContexts function (fltkernel.h)

FltReleaseContexts releases each context in a given FLT_RELATED_CONTEXTS structure.

ifsk\fltreleasecontexts.htm

ifsk

01/22/2021

FltReleaseContexts function

FltApiRef_p_to_z_697bebdc-a3c6-4d95-a97d-0de7b819d56f.xml, FltReleaseContexts, FltReleaseContexts function [Installable File System Drivers], fltkernel/FltReleaseContexts, ifsk.fltreleasecontexts

fltkernel.h

Fltkernel.h

Universal

FltMgr.lib

Fltmgr.sys

See Remarks section.

Windows

FltReleaseContexts

fltkernel/FltReleaseContexts

APIRef

kbSyntax

DllExport

fltmgr.sys

FltReleaseContexts

FltReleaseContexts function

-description

FltReleaseContexts releases each context in a given FLT_RELATED_CONTEXTS structure.

-parameters

-param Contexts [in]

Pointer to the FLT_RELATED_CONTEXTS structure.

-returns

None

-remarks

For more information about contexts, see About minifilter contexts.

FltReleaseContexts decrements the reference count on all contexts in the FLT_RELATED_CONTEXTS structure and sets all members of the structure to NULL_CONTEXT.

To get the FLT_RELATED_CONTEXTS structure for a given minifilter driver for a given I/O request, call FltGetContexts.

For more information about context reference counting, see Referencing Contexts.

Callers of FltReleaseContexts must be running at IRQL <= DISPATCH_LEVEL if all contexts were allocated from nonpaged pool. If any contexts were allocated from paged pool, callers must be running at IRQL <= APC_LEVEL.

When each context's reference count reaches zero, the context is freed immediately if the caller is running at IRQL <= APC_LEVEL. If the caller is running at IRQL DISPATCH_LEVEL, a work item is scheduled to free the context.