1 /* termios.c - fake termios interface using sgtty interface
35  * to the name.  Don't bother with the low speeds - Minix does not support
44 static _PROTOTYPE( int tc_to_sg_speed, (speed_t speed) );
45 static _PROTOTYPE( speed_t sg_to_tc_speed, (int speed) );
48 /* The speed get/set functions could be macros in the Minix implementation
49  * because there are speed fields in the structure with no fancy packing
58     return termios_p->c_ispeed;
64     return termios_p->c_ospeed;
67 speed_t cfsetispeed(termios_p, speed)  in cfsetispeed()  argument
69 speed_t speed;
71     termios_p->c_ispeed = speed;
75 speed_t cfsetospeed(termios_p, speed)  in cfsetospeed()  argument
77 speed_t speed;
79     termios_p->c_ospeed = speed;
83 static speed_t sg_to_tc_speed(speed)  in sg_to_tc_speed()  argument
84 int speed;  in sg_to_tc_speed()
86     /* The speed encodings in sgtty.h and termios.h are different.  Both are
90     switch (speed) {
114 	default: return (speed_t)-1;
118 static int tc_to_sg_speed(speed)  in tc_to_sg_speed()  argument
119 speed_t speed;  in tc_to_sg_speed()
121     /* Don't use a switch here in case the compiler is 16-bit and doesn't
125     if (speed == 0) return 0;
126     if (speed == 110) return B110;
127     if (speed == 200) return B200;
128     if (speed == 300) return B300;
129     if (speed == 600) return B600;
130     if (speed == 1200) return B1200;
131     if (speed == 1800) return B1800;
132     if (speed == 2400) return B2400;
133     if (speed == 4800) return B4800;
134     if (speed == 9600) return B9600;
135     if (speed == 19200) return B19200;
137     if (speed == 28800) return B28800;
140     if (speed == 38400) return B38400;
143     if (speed == 57600) return B57600;
146     if (speed == 115200) return B115200;
148     return -1;
161 	return -1;
167      *   ICRNL:   set if CRMOD is set and not RAW (CRMOD also controls output)
177     termios_p->c_iflag = IGNBRK;
180 	termios_p->c_iflag |= IXON;
183 	    termios_p->c_iflag |= ICRNL;
188      *   OPOST:   set if CRMOD or XTABS is set
192     termios_p->c_oflag = sgbuf.sg_flags & (CRMOD | XTABS);
193     if (termios_p->c_oflag)
195 	termios_p->c_oflag |= OPOST;
199      *   ECHO:    set if ECHO is set
200      *   ECHOE:   set if ECHO is set (ERASE echoed as error-corecting backspace)
201      *   ECHOK:   set if ECHO is set ('\n' echoed after KILL char)
202      *   ECHONL:  forced off ('\n' not echoed when ECHO isn't set)
203      *   ICANON:  set if neither CBREAK nor RAW
205      *   ISIG:    set if not RAW
209     termios_p->c_lflag = 0;
212 	termios_p->c_lflag |= T_ECHO | ECHOE | ECHOK;
216 	termios_p->c_lflag |= ISIG;
219 	    termios_p->c_lflag |= ICANON;
224      *   CLOCAL:  forced on (ignore modem status lines - not quite right)
226      *   CSIZE:   CS5-CS8 correspond directly to BITS5-BITS8
227      *   CSTOPB:  set for B110 (driver will generate 2 stop-bits than)
229      *   PARENB:  set if EVENP or ODDP is set
230      *   PARODD:  set if ODDP is set
232     termios_p->c_cflag = CLOCAL | CREAD;
235 	case BITS5: termios_p->c_cflag |= CS5; break;
236 	case BITS6: termios_p->c_cflag |= CS6; break;
237 	case BITS7: termios_p->c_cflag |= CS7; break;
238 	case BITS8: termios_p->c_cflag |= CS8; break;
242 	termios_p->c_cflag |= PARENB | PARODD;
246 	termios_p->c_cflag |= PARENB;
250 	termios_p->c_cflag |= CSTOPB;
257      * Otherwise it would be very suprisingly not to be able to set
260     termios_p->c_ospeed =
261     termios_p->c_ispeed =
267     termios_p->c_cc[VEOF] = tcbuf.t_eofc;
268     termios_p->c_cc[VEOL] = tcbuf.t_brkc;
269     termios_p->c_cc[VERASE] = sgbuf.sg_erase;
270     termios_p->c_cc[VINTR] = tcbuf.t_intrc;
271     termios_p->c_cc[VKILL] = sgbuf.sg_kill;
272     termios_p->c_cc[VQUIT] = tcbuf.t_quitc;
273     termios_p->c_cc[VSTART] = tcbuf.t_startc;
274     termios_p->c_cc[VSTOP] = tcbuf.t_stopc;
275     termios_p->c_cc[VMIN] = 1;
276     termios_p->c_cc[VTIME] = 0;
277     termios_p->c_cc[VSUSP] = 0;
291     /* Posix 1003.1-1988 page 135 says:
292      * Attempts to set unsupported baud rates shall be ignored, and it is
293      * implementation-defined whether an error is returned by any or all of
300     if ((termios_p->c_ispeed != 0 && termios_p->c_ispeed != termios_p->c_ospeed)
301 	|| (sgspeed = tc_to_sg_speed(termios_p->c_ospeed)) < 0)
304 	return -1;
325     if (termios_p->c_oflag & OPOST)
330 	if (termios_p->c_oflag & XTABS)
336     if (termios_p->c_iflag & ICRNL)
338 	/* We couldn't do it better :-(. */
342     if (termios_p->c_lflag & T_ECHO)
346     if (!(termios_p->c_lflag & ICANON))
348 	if (termios_p->c_lflag & ISIG)
358     switch (termios_p->c_cflag & CSIZE)
365     if (termios_p->c_cflag & PARENB)
367 	if (termios_p->c_cflag & PARODD)
377     sgbuf.sg_erase = termios_p->c_cc[VERASE];
378     sgbuf.sg_kill = termios_p->c_cc[VKILL];
380     tcbuf.t_intrc = termios_p->c_cc[VINTR];
381     tcbuf.t_quitc = termios_p->c_cc[VQUIT];
382     tcbuf.t_startc = termios_p->c_cc[VSTART];
383     tcbuf.t_stopc = termios_p->c_cc[VSTOP];
384     tcbuf.t_eofc = termios_p->c_cc[VEOF];
385     tcbuf.t_brkc = termios_p->c_cc[VEOL];
389 		-1 : 0;