+#include <ntos/fstypes.h>
+
+
+VOID
+STDCALL
+FsRtlFreeFileLock(
+ IN PFILE_LOCK FileLock
+ );
+
+PFILE_LOCK
+STDCALL
+FsRtlAllocateFileLock (
+ IN PCOMPLETE_LOCK_IRP_ROUTINE CompleteLockIrpRoutine OPTIONAL,
+ IN PUNLOCK_ROUTINE UnlockRoutine OPTIONAL
+ );
+
+#define FsRtlAreThereCurrentFileLocks(FL) (((FL)->FastIoIsQuestionable))
+