INT64 __fastcall IoGetOplockKeyContextEx(INT64 a1){ INT64 result; result = (INT64)IopGetFileObjectExtension((_FILE_OBJECT *)a1, FoExtTypeOplockKey, 0i64); if( !result || (*(_BYTE *)(result + 2) & 3) == 0 ) return 0i64; return result; }