THREEPARAMOPEN
fd = THREEPARAMOPEN(file_last_prop, O_WRONLY | O_CREAT | O_TRUNC, 0600);
fd = THREEPARAMOPEN(pathname, O_RDWR | O_CREAT | O_EXCL | O_BINARY, 0600);
fd = THREEPARAMOPEN(db->lock->filename,O_RDWR | O_CREAT | O_EXCL,
lf = THREEPARAMOPEN(lockfilename, O_RDWR | O_CREAT | O_EXCL, 0600);