FltOplockIsSharedRequest function (fltkernel.h)
The FltOplockIsSharedRequest routine determines if a request for an opportunistic lock (oplock) wants a shared oplock.
Syntax
BOOLEAN FLTAPI FltOplockIsSharedRequest(
[in] PFLT_CALLBACK_DATA CallbackData
);
Parameters
[in] CallbackData
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.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | The FltOplockIsSharedRequest routine is available starting with Windows 7. |
| Target Platform | Universal |
| Header | fltkernel.h (include Fltkernel.h) |
| Library | FltMgr.lib |
| DLL | Fltmgr.sys |
| IRQL | <= APC_LEVEL |