1/*-
2 * Copyright (c) 1982, 1986, 1991, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * @(#)tty_compat.c 8.1 (Berkeley) 6/10/93
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61
62static struct speedtab compatspeeds[] = {
63#define MAX_SPEED 17
64 { 115200, 17 },
65 { 57600, 16 },
66 { 38400, 15 },
67 { 19200, 14 },
68 { 9600, 13 },
69 { 4800, 12 },
70 { 2400, 11 },
71 { 1800, 10 },
72 { 1200, 9 },
73 { 600, 8 },
74 { 300, 7 },
75 { 200, 6 },
76 { 150, 5 },
77 { 134, 4 },
78 { 110, 3 },
79 { 75, 2 },
80 { 50, 1 },
81 { 0, 0 },
82 { -1, -1 },
83};
84static int compatspcodes[] = {
85 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200,
86 1800, 2400, 4800, 9600, 19200, 38400, 57600, 115200,
87};
88
89static int
90ttcompatspeedtab(speed, table)
91 int speed;
92 register struct speedtab *table;
93{
94 if (speed == 0)
95 return (0); /* hangup */
96 for ( ; table->sp_speed > 0; table++)
97 if (table->sp_speed <= speed) /* nearest one, rounded down */
98 return (table->sp_code);
99 return (1); /* 50, min and not hangup */
100}
101
102int
103ttsetcompat(tp, com, data, term)
104 register struct tty *tp;
105 int *com;
106 caddr_t data;
107 struct termios *term;
108{
109 switch (*com) {
110 case TIOCSETP:
111 case TIOCSETN: {
112 register struct sgttyb *sg = (struct sgttyb *)data;
113 int speed;
114
115 if ((speed = sg->sg_ispeed) > MAX_SPEED || speed < 0)
116 return(EINVAL);
117 else if (speed != ttcompatspeedtab(tp->t_ispeed, compatspeeds))
118 term->c_ispeed = compatspcodes[speed];
119 else
120 term->c_ispeed = tp->t_ispeed;
121 if ((speed = sg->sg_ospeed) > MAX_SPEED || speed < 0)
122 return(EINVAL);
123 else if (speed != ttcompatspeedtab(tp->t_ospeed, compatspeeds))
124 term->c_ospeed = compatspcodes[speed];
125 else
126 term->c_ospeed = tp->t_ospeed;
127 term->c_cc[VERASE] = sg->sg_erase;
128 term->c_cc[VKILL] = sg->sg_kill;
129 tp->t_flags = (tp->t_flags&0xffff0000) | (sg->sg_flags&0xffff);
130 ttcompatsetflags(tp, term);
131 *com = (*com == TIOCSETP) ? TIOCSETAF : TIOCSETA;
132 break;
133 }
134 case TIOCSETC: {
135 struct tchars *tc = (struct tchars *)data;
136 register cc_t *cc;
137
138 cc = term->c_cc;
139 cc[VINTR] = tc->t_intrc;
140 cc[VQUIT] = tc->t_quitc;
141 cc[VSTART] = tc->t_startc;
142 cc[VSTOP] = tc->t_stopc;
143 cc[VEOF] = tc->t_eofc;
144 cc[VEOL] = tc->t_brkc;
145 if (tc->t_brkc == -1)
146 cc[VEOL2] = _POSIX_VDISABLE;
147 *com = TIOCSETA;
148 break;
149 }
150 case TIOCSLTC: {
151 struct ltchars *ltc = (struct ltchars *)data;
152 register cc_t *cc;
153
154 cc = term->c_cc;
155 cc[VSUSP] = ltc->t_suspc;
156 cc[VDSUSP] = ltc->t_dsuspc;
157 cc[VREPRINT] = ltc->t_rprntc;
158 cc[VDISCARD] = ltc->t_flushc;
159 cc[VWERASE] = ltc->t_werasc;
160 cc[VLNEXT] = ltc->t_lnextc;
161 *com = TIOCSETA;
162 break;
163 }
164 case TIOCLBIS:
165 case TIOCLBIC:
166 case TIOCLSET:
167 if (*com == TIOCLSET)
168 tp->t_flags = (tp->t_flags&0xffff) | *(int *)data<<16;
169 else {
170 tp->t_flags =
171 (ttcompatgetflags(tp)&0xffff0000)|(tp->t_flags&0xffff);
172 if (*com == TIOCLBIS)
173 tp->t_flags |= *(int *)data<<16;
174 else
175 tp->t_flags &= ~(*(int *)data<<16);
176 }
177 ttcompatsetlflags(tp, term);
178 *com = TIOCSETA;
179 break;
180 }
181 return 0;
182}
183
184/*ARGSUSED*/
185int
186ttcompat(tp, com, data, flag)
187 register struct tty *tp;
188 int com;
189 caddr_t data;
190 int flag;
191{
192 switch (com) {
193 case TIOCSETP:
194 case TIOCSETN:
195 case TIOCSETC:
196 case TIOCSLTC:
197 case TIOCLBIS:
198 case TIOCLBIC:
199 case TIOCLSET: {
200 struct termios term;
201 int error;
202
203 term = tp->t_termios;
204 if ((error = ttsetcompat(tp, &com, data, &term)) != 0)
205 return error;
206 return ttioctl(tp, com, &term, flag);
207 }
208 case TIOCGETP: {
209 register struct sgttyb *sg = (struct sgttyb *)data;
210 register cc_t *cc = tp->t_cc;
211
212 sg->sg_ospeed = ttcompatspeedtab(tp->t_ospeed, compatspeeds);
213 if (tp->t_ispeed == 0)
214 sg->sg_ispeed = sg->sg_ospeed;
215 else
216 sg->sg_ispeed = ttcompatspeedtab(tp->t_ispeed, compatspeeds);
217 sg->sg_erase = cc[VERASE];
218 sg->sg_kill = cc[VKILL];
219 sg->sg_flags = tp->t_flags = ttcompatgetflags(tp);
220 break;
221 }
222 case TIOCGETC: {
223 struct tchars *tc = (struct tchars *)data;
224 register cc_t *cc = tp->t_cc;
225
226 tc->t_intrc = cc[VINTR];
227 tc->t_quitc = cc[VQUIT];
228 tc->t_startc = cc[VSTART];
229 tc->t_stopc = cc[VSTOP];
230 tc->t_eofc = cc[VEOF];
231 tc->t_brkc = cc[VEOL];
232 break;
233 }
234 case TIOCGLTC: {
235 struct ltchars *ltc = (struct ltchars *)data;
236 register cc_t *cc = tp->t_cc;
237
238 ltc->t_suspc = cc[VSUSP];
239 ltc->t_dsuspc = cc[VDSUSP];
240 ltc->t_rprntc = cc[VREPRINT];
241 ltc->t_flushc = cc[VDISCARD];
242 ltc->t_werasc = cc[VWERASE];
243 ltc->t_lnextc = cc[VLNEXT];
244 break;
245 }
246 case TIOCLGET:
247 tp->t_flags =
248 (ttcompatgetflags(tp) & 0xffff0000UL)
249 | (tp->t_flags & 0xffff);
250 *(int *)data = tp->t_flags>>16;
251 if (ttydebug)
252 printf("CLGET: returning %x\n", *(int *)data);
253 break;
254
255 case OTIOCGETD:
256 *(int *)data = tp->t_line ? tp->t_line : 2;
257 break;
258
259 case OTIOCSETD: {
260 int ldisczero = 0;
261
262 return (ttioctl(tp, TIOCSETD,
263 *(int *)data == 2 ? (caddr_t)&ldisczero : data, flag));
264 }
265
266 case OTIOCCONS:
267 *(int *)data = 1;
268 return (ttioctl(tp, TIOCCONS, data, flag));
269
270 default:
271 return (-1);
272 }
273 return (0);
274}
275
276static int
277ttcompatgetflags(tp)
278 register struct tty *tp;
279{
280 register tcflag_t iflag = tp->t_iflag;
281 register tcflag_t lflag = tp->t_lflag;
282 register tcflag_t oflag = tp->t_oflag;
283 register tcflag_t cflag = tp->t_cflag;
284 register flags = 0;
285
286 if (iflag&IXOFF)
287 flags |= TANDEM;
288 if (iflag&ICRNL || oflag&ONLCR)
289 flags |= CRMOD;
290 if ((cflag&CSIZE) == CS8) {
291 flags |= PASS8;
292 if (iflag&ISTRIP)
293 flags |= ANYP;
294 }
295 else if (cflag&PARENB) {
296 if (iflag&INPCK) {
297 if (cflag&PARODD)
298 flags |= ODDP;
299 else
300 flags |= EVENP;
301 } else
302 flags |= EVENP | ODDP;
303 }
304
305 if ((lflag&ICANON) == 0) {
306 /* fudge */
307 if (iflag&(INPCK|ISTRIP|IXON) || lflag&(IEXTEN|ISIG)
308 || cflag&(CSIZE|PARENB) != CS8)
309 flags |= CBREAK;
310 else
311 flags |= RAW;
312 }
313 if (!(flags&RAW) && !(oflag&OPOST) && cflag&(CSIZE|PARENB) == CS8)
314 flags |= LITOUT;
315 if (cflag&MDMBUF)
316 flags |= MDMBUF;
317 if ((cflag&HUPCL) == 0)
318 flags |= NOHANG;
319 if (oflag&OXTABS)
320 flags |= XTABS;
321 if (lflag&ECHOE)
322 flags |= CRTERA|CRTBS;
323 if (lflag&ECHOKE)
324 flags |= CRTKIL|CRTBS;
325 if (lflag&ECHOPRT)
326 flags |= PRTERA;
327 if (lflag&ECHOCTL)
328 flags |= CTLECH;
329 if ((iflag&IXANY) == 0)
330 flags |= DECCTQ;
331 flags |= lflag&(ECHO|TOSTOP|FLUSHO|PENDIN|NOFLSH);
332 if (ttydebug)
333 printf("getflags: %x\n", flags);
334 return (flags);
335}
336
337static void
338ttcompatsetflags(tp, t)
339 register struct tty *tp;
340 register struct termios *t;
341{
342 register flags = tp->t_flags;
343 register tcflag_t iflag = t->c_iflag;
344 register tcflag_t oflag = t->c_oflag;
345 register tcflag_t lflag = t->c_lflag;
346 register tcflag_t cflag = t->c_cflag;
347
348 if (flags & RAW) {
349 iflag = IGNBRK;
350 lflag &= ~(ECHOCTL|ISIG|ICANON|IEXTEN);
351 } else {
352 iflag &= ~(PARMRK|IGNPAR|IGNCR|INLCR);
353 iflag |= BRKINT|IXON|IMAXBEL;
354 lflag |= ISIG|IEXTEN|ECHOCTL; /* XXX was echoctl on ? */
355 if (flags & XTABS)
356 oflag |= OXTABS;
357 else
358 oflag &= ~OXTABS;
359 if (flags & CBREAK)
360 lflag &= ~ICANON;
361 else
362 lflag |= ICANON;
363 if (flags&CRMOD) {
364 iflag |= ICRNL;
365 oflag |= ONLCR;
366 } else {
367 iflag &= ~ICRNL;
368 oflag &= ~ONLCR;
369 }
370 }
371 if (flags&ECHO)
372 lflag |= ECHO;
373 else
374 lflag &= ~ECHO;
375
376 cflag &= ~(CSIZE|PARENB);
377 if (flags&(RAW|LITOUT|PASS8)) {
378 cflag |= CS8;
379 if (!(flags&(RAW|PASS8))
380 || (flags&(RAW|PASS8|ANYP)) == (PASS8|ANYP))
381 iflag |= ISTRIP;
382 else
383 iflag &= ~ISTRIP;
384 if (flags&(RAW|LITOUT))
385 oflag &= ~OPOST;
386 else
387 oflag |= OPOST;
388 } else {
389 cflag |= CS7|PARENB;
390 iflag |= ISTRIP;
391 oflag |= OPOST;
392 }
393 /* XXX don't set INPCK if RAW or PASS8? */
394 if ((flags&(EVENP|ODDP)) == EVENP) {
395 iflag |= INPCK;
396 cflag &= ~PARODD;
397 } else if ((flags&(EVENP|ODDP)) == ODDP) {
398 iflag |= INPCK;
399 cflag |= PARODD;
400 } else
401 iflag &= ~INPCK;
402 if (flags&TANDEM)
403 iflag |= IXOFF;
404 else
405 iflag &= ~IXOFF;
406 if ((flags&DECCTQ) == 0)
407 iflag |= IXANY;
408 else
409 iflag &= ~IXANY;
410 t->c_iflag = iflag;
411 t->c_oflag = oflag;
412 t->c_lflag = lflag;
413 t->c_cflag = cflag;
414}
415
416static void
417ttcompatsetlflags(tp, t)
418 register struct tty *tp;
419 register struct termios *t;
420{
421 register flags = tp->t_flags;
422 register tcflag_t iflag = t->c_iflag;
423 register tcflag_t oflag = t->c_oflag;
424 register tcflag_t lflag = t->c_lflag;
425 register tcflag_t cflag = t->c_cflag;
426
427 iflag &= ~(PARMRK|IGNPAR|IGNCR|INLCR);
428 if (flags&CRTERA)
429 lflag |= ECHOE;
430 else
431 lflag &= ~ECHOE;
432 if (flags&CRTKIL)
433 lflag |= ECHOKE;
434 else
435 lflag &= ~ECHOKE;
436 if (flags&PRTERA)
437 lflag |= ECHOPRT;
438 else
439 lflag &= ~ECHOPRT;
440 if (flags&CTLECH)
441 lflag |= ECHOCTL;
442 else
443 lflag &= ~ECHOCTL;
444 if (flags&TANDEM)
445 iflag |= IXOFF;
446 else
447 iflag &= ~IXOFF;
448 if ((flags&DECCTQ) == 0)
449 iflag |= IXANY;
450 else
451 iflag &= ~IXANY;
452 if (flags & MDMBUF)
453 cflag |= MDMBUF;
454 else
455 cflag &= ~MDMBUF;
456 if (flags&NOHANG)
457 cflag &= ~HUPCL;
458 else
459 cflag |= HUPCL;
460 lflag &= ~(TOSTOP|FLUSHO|PENDIN|NOFLSH);
461 lflag |= flags&(TOSTOP|FLUSHO|PENDIN|NOFLSH);
462
463 /*
464 * The next if-else statement is copied from above so don't bother
465 * checking it separately. We could avoid fiddlling with the
466 * character size if the mode is already RAW or if neither the
467 * LITOUT bit or the PASS8 bit is being changed, but the delta of
468 * the change is not available here and skipping the RAW case would
469 * make the code different from above.
470 */
471 cflag &= ~(CSIZE|PARENB);
472 if (flags&(RAW|LITOUT|PASS8)) {
473 cflag |= CS8;
474 if (!(flags&(RAW|PASS8))
475 || (flags&(RAW|PASS8|ANYP)) == (PASS8|ANYP))
476 iflag |= ISTRIP;
477 else
478 iflag &= ~ISTRIP;
479 if (flags&(RAW|LITOUT))
480 oflag &= ~OPOST;
481 else
482 oflag |= OPOST;
483 } else {
484 cflag |= CS7|PARENB;
485 iflag |= ISTRIP;
486 oflag |= OPOST;
487 }
488 t->c_iflag = iflag;
489 t->c_oflag = oflag;
490 t->c_lflag = lflag;
491 t->c_cflag = cflag;
492}
493#endif /* COMPAT_43 || COMPAT_SUNOS */
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