Function ZwLockFile 

pub unsafe extern "system" fn ZwLockFile(
    filehandle: HANDLE,
    event: HANDLE,
    apcroutine: PIO_APC_ROUTINE,
    apccontext: *const c_void,
    iostatusblock: *mut IO_STATUS_BLOCK,
    byteoffset: *const i64,
    length: *const i64,
    key: u32,
    failimmediately: bool,
    exclusivelock: bool,
) -> NTSTATUS