FltOplockIsSharedRequest - NtDoc

Native API online documentation, based on the System Informer (formerly Process Hacker) phnt headers 
// fltkernel.h

BOOLEAN FLTAPI FltOplockIsSharedRequest(
  [in] PFLT_CALLBACK_DATA CallbackData
);
View the official Windows Driver Kit DDI reference

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Windows Driver Kit DDI reference (nf-fltkernel-fltoplockissharedrequest)

FltOplockIsSharedRequest function

Description

The FltOplockIsSharedRequest routine determines if a request for an opportunistic lock (oplock) wants a shared oplock.

Parameters

CallbackData [in]

A pointer to the callback data (FLT_CALLBACK_DATA) structure for the I/O operation. The caller must ensure that the I/O operation has a major code of IRP_MJ_FILE_SYSTEM_CONTROL and a minor code of IRP_MN_USER_FS_REQUEST.

Return value

FltOplockIsSharedRequest returns TRUE if the oplock request is for a shared oplock (that is, a level 2, R, or RH oplock). FltOplockIsSharedRequest returns FALSE if the oplock request is not for a shared oplock or if the I/O operation is not an oplock request. For more information about oplock types, see Oplock Semantics Overview.

See also

FsRtlOplockIsSharedRequest

View the official Windows Driver Kit DDI reference

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