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FsRtlCheckOplockForFsFilterCallback function (ntifs.h)

  • Article

A file system can call FsRtlCheckOplockForFsFilterCallback to break oplocks that are affected by file system filter operations.

Syntax

NTSTATUS FsRtlCheckOplockForFsFilterCallback(
  POPLOCK Oplock,
  PVOID   CallbackData,
  ULONG   Flags
);

Return value

FsRtlCheckOplockForFsFilterCallback returns TRUE if it can complete the operation on exiting this thread; otherwise, it returns FALSE.

Remarks

FsFilter operations can't be pended and shouldn't be blocked, so this routine can only break oplocks asynchronously.

This routine handles the following operation. Passing any other FsFilter operations is an error.

  • FS_FILTER_ACQUIRE_FOR_SECTION_SYNCHRONIZATION

Requirements

Requirement Value
Minimum supported client Windows 11, version 24H2
Header ntifs.h
IRQL Less than or equal to APC_LEVEL