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The FsRtlCheckLockForOplockRequest routine checks for locks within the allocation size of a file. The file lock object is checked for the presence of byte range locks that would prevent an oplock request from being granted.
Syntax
BOOLEAN FsRtlCheckLockForOplockRequest(
[in] PFILE_LOCK FileLock,
[in] PLARGE_INTEGER AllocationSize
);
Parameters
[in] FileLock
The file lock that specifies locked ranges.
[in] AllocationSize
The file allocation size to check for any locked ranges.
Return value
FsRtlCheckLockForOplockRequest returns TRUE if the oplock request can be granted; otherwise it returns FALSE.
Remarks
FsRtlCheckLockForOplockRequest returns TRUE if AllocationSize = 0.
If FileLock has any pending lock requests, the check fails and FsRtlCheckLockForOplockRequest returns FALSE.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 8 |
| Target Platform | Universal |
| Header | ntifs.h (include Ntifs.h) |
| Library | NtosKrnl.lib |
| DLL | NtosKrnl.exe |
| IRQL | <= APC_LEVEL |