NTSTATUS __fastcall IoGetOplockKeyContextEx(INT64 a1){
_BYTE *FileObjectExtension;
FileObjectExtension = IopGetFileObjectExtension((_FILE_OBJECT *)a1, FoExtTypeOplockKey, 0i64);
if( !FileObjectExtension || (FileObjectExtension[2] & 3) == 0 )
LODWORD(FileObjectExtension) = 0;
return(int)FileObjectExtension;
}