- tcflag_t c_iflag; /* input mode */
- tcflag_t c_oflag; /* output mode */
- tcflag_t c_cflag; /* control mode */
- tcflag_t c_lflag; /* local mode */
- cc_t c_line; /* line discipline */
- cc_t c_cc[NCCS]; /* control characters */
- speed_t c_ispeed; /* input speed */
- speed_t c_ospeed; /* c_ospeed */