FltInitializeOplock function (fltkernel.h)

Article
10/21/2021

The FltInitializeOplock routine initializes an opportunistic lock (oplock) pointer.

Syntax

VOID FLTAPI FltInitializeOplock(
  [out] POPLOCK Oplock
);

Parameters

[out] Oplock

Caller-supplied pointer variable that receives the initialized opaque oplock pointer. This variable must be initialized to NULL before the initial call to FltInitializeOplock.

Return value

None

Remarks

When the oplock pointer is no longer needed, it can be uninitialized by calling FltUninitializeOplock. The uninitialized oplock pointer can then be initialized for reuse by calling FltInitializeOplock.

To request an oplock or respond to an oplock break notification, call FltOplockFsctrl.

For detailed information about opportunistic locks, see the Microsoft Windows SDK documentation.

Requirements

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