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29 * @(#)tty_compat.c 8.1 (Berkeley) 6/10/93
30 * $FreeBSD: src/sys/kern/tty_compat.c,v 1.29 1999/08/28 00:46:20 peter Exp $
34 * mapping routines for old line discipline (yuck)
37 #include <sys/param.h>
38 #include <sys/systm.h>
39 #include <sys/ioctl_compat.h>
41 #include <sys/kernel.h>
42 #include <sys/sysctl.h>
44 static int ttcompatgetflags (struct tty *tp);
45 static void ttcompatsetflags (struct tty *tp, struct termios *t);
46 static void ttcompatsetlflags (struct tty *tp, struct termios *t);
47 static int ttcompatspeedtab (int speed, struct speedtab *table);
49 static int ttydebug = 0;
50 SYSCTL_INT(_debug, OID_AUTO, ttydebug, CTLFLAG_RW, &ttydebug, 0,
53 static struct speedtab compatspeeds[] = {
75 static int compatspcodes[] = {
76 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200,
77 1800, 2400, 4800, 9600, 19200, 38400, 57600, 115200,
81 ttcompatspeedtab(int speed, struct speedtab *table)
84 return (0); /* hangup */
85 for ( ; table->sp_speed > 0; table++)
86 if (table->sp_speed <= speed) /* nearest one, rounded down */
87 return (table->sp_code);
88 return (1); /* 50, min and not hangup */
92 ttsetcompat(struct tty *tp, u_long *com, caddr_t data, struct termios *term)
97 struct sgttyb *sg = (struct sgttyb *)data;
100 if ((speed = sg->sg_ispeed) > MAX_SPEED || speed < 0)
102 else if (speed != ttcompatspeedtab(tp->t_ispeed, compatspeeds))
103 term->c_ispeed = compatspcodes[speed];
105 term->c_ispeed = tp->t_ispeed;
106 if ((speed = sg->sg_ospeed) > MAX_SPEED || speed < 0)
108 else if (speed != ttcompatspeedtab(tp->t_ospeed, compatspeeds))
109 term->c_ospeed = compatspcodes[speed];
111 term->c_ospeed = tp->t_ospeed;
112 term->c_cc[VERASE] = sg->sg_erase;
113 term->c_cc[VKILL] = sg->sg_kill;
114 tp->t_flags = (tp->t_flags&0xffff0000) | (sg->sg_flags&0xffff);
115 ttcompatsetflags(tp, term);
116 *com = (*com == TIOCSETP) ? TIOCSETAF : TIOCSETA;
120 struct tchars *tc = (struct tchars *)data;
124 cc[VINTR] = tc->t_intrc;
125 cc[VQUIT] = tc->t_quitc;
126 cc[VSTART] = tc->t_startc;
127 cc[VSTOP] = tc->t_stopc;
128 cc[VEOF] = tc->t_eofc;
129 cc[VEOL] = tc->t_brkc;
130 if (tc->t_brkc == -1)
131 cc[VEOL2] = _POSIX_VDISABLE;
136 struct ltchars *ltc = (struct ltchars *)data;
140 cc[VSUSP] = ltc->t_suspc;
141 cc[VDSUSP] = ltc->t_dsuspc;
142 cc[VREPRINT] = ltc->t_rprntc;
143 cc[VDISCARD] = ltc->t_flushc;
144 cc[VWERASE] = ltc->t_werasc;
145 cc[VLNEXT] = ltc->t_lnextc;
152 if (*com == TIOCLSET)
153 tp->t_flags = (tp->t_flags&0xffff) | *(int *)data<<16;
156 (ttcompatgetflags(tp)&0xffff0000)|(tp->t_flags&0xffff);
157 if (*com == TIOCLBIS)
158 tp->t_flags |= *(int *)data<<16;
160 tp->t_flags &= ~(*(int *)data<<16);
162 ttcompatsetlflags(tp, term);
171 ttcompat(struct tty *tp, u_long com, caddr_t data, int flag)
184 term = tp->t_termios;
185 if ((error = ttsetcompat(tp, &com, data, &term)) != 0)
187 return ttioctl(tp, com, &term, flag);
190 struct sgttyb *sg = (struct sgttyb *)data;
193 sg->sg_ospeed = ttcompatspeedtab(tp->t_ospeed, compatspeeds);
194 if (tp->t_ispeed == 0)
195 sg->sg_ispeed = sg->sg_ospeed;
197 sg->sg_ispeed = ttcompatspeedtab(tp->t_ispeed, compatspeeds);
198 sg->sg_erase = cc[VERASE];
199 sg->sg_kill = cc[VKILL];
200 sg->sg_flags = tp->t_flags = ttcompatgetflags(tp);
204 struct tchars *tc = (struct tchars *)data;
207 tc->t_intrc = cc[VINTR];
208 tc->t_quitc = cc[VQUIT];
209 tc->t_startc = cc[VSTART];
210 tc->t_stopc = cc[VSTOP];
211 tc->t_eofc = cc[VEOF];
212 tc->t_brkc = cc[VEOL];
216 struct ltchars *ltc = (struct ltchars *)data;
219 ltc->t_suspc = cc[VSUSP];
220 ltc->t_dsuspc = cc[VDSUSP];
221 ltc->t_rprntc = cc[VREPRINT];
222 ltc->t_flushc = cc[VDISCARD];
223 ltc->t_werasc = cc[VWERASE];
224 ltc->t_lnextc = cc[VLNEXT];
229 (ttcompatgetflags(tp) & 0xffff0000UL)
230 | (tp->t_flags & 0xffff);
231 *(int *)data = tp->t_flags>>16;
233 kprintf("CLGET: returning %x\n", *(int *)data);
237 *(int *)data = tp->t_line ? tp->t_line : 2;
243 return (ttioctl(tp, TIOCSETD,
244 *(int *)data == 2 ? (caddr_t)&ldisczero : data, flag));
249 return (ttioctl(tp, TIOCCONS, data, flag));
258 ttcompatgetflags(struct tty *tp)
260 tcflag_t iflag = tp->t_iflag;
261 tcflag_t lflag = tp->t_lflag;
262 tcflag_t oflag = tp->t_oflag;
263 tcflag_t cflag = tp->t_cflag;
268 if (iflag&ICRNL || oflag&ONLCR)
270 if ((cflag&CSIZE) == CS8) {
275 else if (cflag&PARENB) {
282 flags |= EVENP | ODDP;
285 if ((lflag&ICANON) == 0) {
287 if (iflag&(INPCK|ISTRIP|IXON) || lflag&(IEXTEN|ISIG)
288 || (cflag&(CSIZE|PARENB)) != CS8)
293 if (!(flags&RAW) && !(oflag&OPOST) && (cflag&(CSIZE|PARENB)) == CS8)
297 if ((cflag&HUPCL) == 0)
302 flags |= CRTERA|CRTBS;
304 flags |= CRTKIL|CRTBS;
309 if ((iflag&IXANY) == 0)
311 flags |= lflag&(ECHO|TOSTOP|FLUSHO|PENDIN|NOFLSH);
313 kprintf("getflags: %x\n", flags);
318 ttcompatsetflags(struct tty *tp, struct termios *t)
320 int flags = tp->t_flags;
321 tcflag_t iflag = t->c_iflag;
322 tcflag_t oflag = t->c_oflag;
323 tcflag_t lflag = t->c_lflag;
324 tcflag_t cflag = t->c_cflag;
328 lflag &= ~(ECHOCTL|ISIG|ICANON|IEXTEN);
330 iflag &= ~(PARMRK|IGNPAR|IGNCR|INLCR);
331 iflag |= BRKINT|IXON|IMAXBEL;
332 lflag |= ISIG|IEXTEN|ECHOCTL; /* XXX was echoctl on ? */
354 cflag &= ~(CSIZE|PARENB);
355 if (flags&(RAW|LITOUT|PASS8)) {
357 if (!(flags&(RAW|PASS8))
358 || (flags&(RAW|PASS8|ANYP)) == (PASS8|ANYP))
362 if (flags&(RAW|LITOUT))
371 /* XXX don't set INPCK if RAW or PASS8? */
372 if ((flags&(EVENP|ODDP)) == EVENP) {
375 } else if ((flags&(EVENP|ODDP)) == ODDP) {
384 if ((flags&DECCTQ) == 0)
395 ttcompatsetlflags(struct tty *tp, struct termios *t)
397 int flags = tp->t_flags;
398 tcflag_t iflag = t->c_iflag;
399 tcflag_t oflag = t->c_oflag;
400 tcflag_t lflag = t->c_lflag;
401 tcflag_t cflag = t->c_cflag;
403 iflag &= ~(PARMRK|IGNPAR|IGNCR|INLCR);
424 if ((flags&DECCTQ) == 0)
436 lflag &= ~(TOSTOP|FLUSHO|PENDIN|NOFLSH);
437 lflag |= flags&(TOSTOP|FLUSHO|PENDIN|NOFLSH);
440 * The next if-else statement is copied from above so don't bother
441 * checking it separately. We could avoid fiddlling with the
442 * character size if the mode is already RAW or if neither the
443 * LITOUT bit or the PASS8 bit is being changed, but the delta of
444 * the change is not available here and skipping the RAW case would
445 * make the code different from above.
447 cflag &= ~(CSIZE|PARENB);
448 if (flags&(RAW|LITOUT|PASS8)) {
450 if (!(flags&(RAW|PASS8))
451 || (flags&(RAW|PASS8|ANYP)) == (PASS8|ANYP))
455 if (flags&(RAW|LITOUT))