Commit | Line | Data |
---|---|---|
250cd6a1 | 1 | /* tty.c 3.11 %G% */ |
89dc6dfb BJ |
2 | |
3 | /* | |
4 | * general TTY subroutines | |
5 | */ | |
6 | #include "../h/param.h" | |
7 | #include "../h/systm.h" | |
8 | #include "../h/dir.h" | |
9 | #include "../h/user.h" | |
10 | #include "../h/tty.h" | |
11 | #include "../h/proc.h" | |
12 | #include "../h/mx.h" | |
13 | #include "../h/inode.h" | |
14 | #include "../h/file.h" | |
15 | #include "../h/reg.h" | |
16 | #include "../h/conf.h" | |
17 | #include "../h/buf.h" | |
d1778415 | 18 | #include "../h/dk.h" |
89dc6dfb BJ |
19 | |
20 | char partab[]; | |
21 | ||
d3ebf5ee BJ |
22 | /* |
23 | * When running dz's using only SAE (silo alarm) on input | |
24 | * it is necessary to call dzrint() at clock interrupt time. | |
25 | * This is unsafe unless spl5()s in tty code are changed to | |
26 | * spl6()s to block clock interrupts. Note that the dh driver | |
27 | * currently in use works the same way as the dz, even though | |
28 | * we could try to more intelligently manage its silo. | |
29 | * Thus don't take this out if you have no dz's unless you | |
30 | * change clock.c and dhtimer(). | |
31 | */ | |
32 | #define spl5 spl6 | |
89dc6dfb BJ |
33 | |
34 | /* | |
35 | * Input mapping table-- if an entry is non-zero, when the | |
36 | * corresponding character is typed preceded by "\" the escape | |
37 | * sequence is replaced by the table value. Mostly used for | |
38 | * upper-case only terminals. | |
39 | */ | |
40 | ||
41 | char maptab[] ={ | |
42 | 000,000,000,000,000,000,000,000, | |
43 | 000,000,000,000,000,000,000,000, | |
44 | 000,000,000,000,000,000,000,000, | |
45 | 000,000,000,000,000,000,000,000, | |
46 | 000,'|',000,000,000,000,000,'`', | |
47 | '{','}',000,000,000,000,000,000, | |
48 | 000,000,000,000,000,000,000,000, | |
49 | 000,000,000,000,000,000,000,000, | |
50 | 000,000,000,000,000,000,000,000, | |
51 | 000,000,000,000,000,000,000,000, | |
52 | 000,000,000,000,000,000,000,000, | |
53 | 000,000,000,000,000,000,'~',000, | |
54 | 000,'A','B','C','D','E','F','G', | |
55 | 'H','I','J','K','L','M','N','O', | |
56 | 'P','Q','R','S','T','U','V','W', | |
57 | 'X','Y','Z',000,000,000,000,000, | |
58 | }; | |
59 | ||
60 | ||
61 | /* | |
62 | * shorthand | |
63 | */ | |
64 | #define q1 tp->t_rawq | |
65 | #define q2 tp->t_canq | |
66 | #define q3 tp->t_outq | |
67 | #define q4 tp->t_un.t_ctlq | |
68 | ||
69 | #define OBUFSIZ 100 | |
70 | ||
71 | /* | |
72 | * routine called on first teletype open. | |
73 | * establishes a process group for distribution | |
74 | * of quits and interrupts from the tty. | |
75 | */ | |
76 | ttyopen(dev, tp) | |
77 | dev_t dev; | |
78 | register struct tty *tp; | |
79 | { | |
80 | register struct proc *pp; | |
81 | ||
82 | pp = u.u_procp; | |
83 | tp->t_dev = dev; | |
84 | if(pp->p_pgrp == 0) { | |
85 | u.u_ttyp = tp; | |
86 | u.u_ttyd = dev; | |
6fdc0335 BJ |
87 | if (tp->t_pgrp == 0) |
88 | tp->t_pgrp = pp->p_pid; | |
89dc6dfb BJ |
89 | pp->p_pgrp = tp->t_pgrp; |
90 | } | |
91 | tp->t_state &= ~WOPEN; | |
92 | tp->t_state |= ISOPEN; | |
250cd6a1 | 93 | tp->t_line = 0; /* conservative */ |
89dc6dfb BJ |
94 | } |
95 | ||
89dc6dfb BJ |
96 | /* |
97 | * set default control characters. | |
98 | */ | |
99 | ttychars(tp) | |
100 | register struct tty *tp; | |
101 | { | |
8062c8a7 | 102 | |
89dc6dfb BJ |
103 | tun.t_intrc = CINTR; |
104 | tun.t_quitc = CQUIT; | |
105 | tun.t_startc = CSTART; | |
106 | tun.t_stopc = CSTOP; | |
107 | tun.t_eofc = CEOT; | |
108 | tun.t_brkc = CBRK; | |
109 | tp->t_erase = CERASE; | |
110 | tp->t_kill = CKILL; | |
8062c8a7 | 111 | /* begin local */ |
6fdc0335 BJ |
112 | tlun.t_suspc = CTRL(z); |
113 | tlun.t_dsuspc = CTRL(y); | |
8062c8a7 BJ |
114 | tlun.t_rprntc = CTRL(r); |
115 | tlun.t_flushc = CTRL(o); | |
116 | tlun.t_werasc = CTRL(w); | |
117 | tlun.t_lnextc = CTRL(v); | |
118 | tlun.t_lintr = CTRL(c); | |
119 | tlun.t_lerase = CTRL(h); | |
120 | tlun.t_lkill = CTRL(u); | |
121 | tp->t_local = 0; | |
122 | tp->t_lstate = 0; | |
123 | /* end local */ | |
89dc6dfb BJ |
124 | } |
125 | ||
126 | /* | |
127 | * clean tp on last close | |
128 | */ | |
129 | ttyclose(tp) | |
130 | register struct tty *tp; | |
131 | { | |
132 | ||
133 | tp->t_pgrp = 0; | |
134 | wflushtty(tp); | |
135 | tp->t_state = 0; | |
250cd6a1 | 136 | tp->t_line = 0; |
89dc6dfb BJ |
137 | } |
138 | ||
139 | /* | |
140 | * stty/gtty writearound | |
141 | */ | |
142 | stty() | |
143 | { | |
144 | u.u_arg[2] = u.u_arg[1]; | |
145 | u.u_arg[1] = TIOCSETP; | |
146 | ioctl(); | |
147 | } | |
148 | ||
149 | gtty() | |
150 | { | |
151 | u.u_arg[2] = u.u_arg[1]; | |
152 | u.u_arg[1] = TIOCGETP; | |
153 | ioctl(); | |
154 | } | |
155 | ||
101ba270 BJ |
156 | /* |
157 | * Do nothing specific version of line | |
158 | * discipline specific ioctl command. | |
159 | */ | |
de857265 | 160 | /*ARGSUSED*/ |
101ba270 BJ |
161 | nullioctl(tp, cmd, addr) |
162 | register struct tty *tp; | |
163 | caddr_t addr; | |
164 | { | |
165 | ||
166 | return (cmd); | |
167 | } | |
168 | ||
89dc6dfb BJ |
169 | /* |
170 | * ioctl system call | |
171 | * Check legality, execute common code, and switch out to individual | |
172 | * device routine. | |
173 | */ | |
174 | ioctl() | |
175 | { | |
176 | register struct file *fp; | |
177 | register struct inode *ip; | |
178 | register struct a { | |
179 | int fdes; | |
180 | int cmd; | |
181 | caddr_t cmarg; | |
182 | } *uap; | |
183 | register dev_t dev; | |
184 | register fmt; | |
185 | ||
186 | uap = (struct a *)u.u_ap; | |
187 | if ((fp = getf(uap->fdes)) == NULL) | |
188 | return; | |
189 | if (uap->cmd==FIOCLEX) { | |
190 | u.u_pofile[uap->fdes] |= EXCLOSE; | |
191 | return; | |
192 | } | |
193 | if (uap->cmd==FIONCLEX) { | |
194 | u.u_pofile[uap->fdes] &= ~EXCLOSE; | |
195 | return; | |
196 | } | |
197 | ip = fp->f_inode; | |
198 | fmt = ip->i_mode & IFMT; | |
199 | if (fmt != IFCHR && fmt != IFMPC) { | |
8062c8a7 BJ |
200 | /* begin local */ |
201 | if (uap->cmd==FIONREAD && (fmt == IFREG || fmt == IFDIR)) { | |
202 | off_t nread = ip->i_size - fp->f_un.f_offset; | |
203 | ||
204 | if (copyout((caddr_t)&nread, uap->cmarg, sizeof(off_t))) | |
205 | u.u_error = EFAULT; | |
206 | } else | |
207 | /* end local */ | |
208 | u.u_error = ENOTTY; | |
89dc6dfb BJ |
209 | return; |
210 | } | |
211 | dev = ip->i_un.i_rdev; | |
212 | u.u_r.r_val1 = 0; | |
213 | (*cdevsw[major(dev)].d_ioctl)(dev, uap->cmd, uap->cmarg, fp->f_flag); | |
214 | } | |
215 | ||
216 | /* | |
217 | * Common code for several tty ioctl commands | |
218 | */ | |
219 | ttioccomm(com, tp, addr, dev) | |
220 | register struct tty *tp; | |
221 | caddr_t addr; | |
222 | { | |
223 | unsigned t; | |
8062c8a7 | 224 | struct sgttyb iocb; |
de857265 | 225 | struct clist tq; |
89dc6dfb BJ |
226 | extern int nldisp; |
227 | ||
228 | switch(com) { | |
229 | ||
230 | /* | |
231 | * get discipline number | |
232 | */ | |
233 | case TIOCGETD: | |
234 | t = tp->t_line; | |
235 | if (copyout((caddr_t)&t, addr, sizeof(t))) | |
236 | u.u_error = EFAULT; | |
237 | break; | |
238 | ||
239 | /* | |
240 | * set line discipline | |
241 | */ | |
242 | case TIOCSETD: | |
243 | if (copyin(addr, (caddr_t)&t, sizeof(t))) { | |
244 | u.u_error = EFAULT; | |
245 | break; | |
246 | } | |
247 | if (t >= nldisp) { | |
248 | u.u_error = ENXIO; | |
249 | break; | |
250 | } | |
8062c8a7 | 251 | (void) spl5(); |
89dc6dfb BJ |
252 | if (tp->t_line) |
253 | (*linesw[tp->t_line].l_close)(tp); | |
254 | if (t) | |
255 | (*linesw[t].l_open)(dev, tp, addr); | |
256 | if (u.u_error==0) | |
257 | tp->t_line = t; | |
8062c8a7 | 258 | (void) spl0(); |
89dc6dfb BJ |
259 | break; |
260 | ||
261 | /* | |
262 | * prevent more opens on channel | |
263 | */ | |
264 | case TIOCEXCL: | |
265 | tp->t_state |= XCLUDE; | |
266 | break; | |
267 | ||
268 | case TIOCNXCL: | |
269 | tp->t_state &= ~XCLUDE; | |
270 | break; | |
271 | ||
272 | /* | |
273 | * Set new parameters | |
274 | */ | |
275 | case TIOCSETP: | |
de857265 | 276 | case TIOCSETN: |
89dc6dfb BJ |
277 | if (copyin(addr, (caddr_t)&iocb, sizeof(iocb))) { |
278 | u.u_error = EFAULT; | |
279 | return(1); | |
280 | } | |
101ba270 | 281 | (void) spl5(); |
8062c8a7 BJ |
282 | if (tp->t_line == 0) { |
283 | if (com == TIOCSETP) | |
284 | wflushtty(tp); | |
285 | while (canon(tp)>=0) | |
286 | ; | |
287 | } else if (tp->t_line == NTTYDISC) { | |
288 | if (tp->t_flags&RAW || iocb.sg_flags&RAW || | |
289 | com == TIOCSETP) | |
290 | wflushtty(tp); | |
291 | else if ((tp->t_flags&CBREAK) != (iocb.sg_flags&CBREAK)) { | |
292 | if (iocb.sg_flags & CBREAK) { | |
293 | catq(&tp->t_rawq, &tp->t_canq); | |
294 | tq = tp->t_rawq; | |
295 | tp->t_rawq = tp->t_canq; | |
296 | tp->t_canq = tq; | |
297 | } else { | |
298 | tp->t_local |= LPENDIN; | |
299 | if (tp->t_canq.c_cc) | |
300 | panic("ioccom canq"); | |
301 | if (tp->t_chan) | |
302 | (void) sdata(tp->t_chan); | |
303 | else | |
304 | wakeup((caddr_t)&tp->t_rawq); | |
305 | } | |
306 | } | |
307 | } | |
89dc6dfb | 308 | if ((tp->t_state&SPEEDS)==0) { |
8062c8a7 BJ |
309 | tp->t_ispeed = iocb.sg_ispeed; |
310 | tp->t_ospeed = iocb.sg_ospeed; | |
89dc6dfb | 311 | } |
8062c8a7 BJ |
312 | tp->t_erase = iocb.sg_erase; |
313 | tp->t_kill = iocb.sg_kill; | |
314 | tp->t_flags = iocb.sg_flags; | |
101ba270 | 315 | (void) spl0(); |
89dc6dfb BJ |
316 | break; |
317 | ||
318 | /* | |
319 | * send current parameters to user | |
320 | */ | |
321 | case TIOCGETP: | |
8062c8a7 BJ |
322 | iocb.sg_ispeed = tp->t_ispeed; |
323 | iocb.sg_ospeed = tp->t_ospeed; | |
324 | iocb.sg_erase = tp->t_erase; | |
325 | iocb.sg_kill = tp->t_kill; | |
326 | iocb.sg_flags = tp->t_flags; | |
89dc6dfb BJ |
327 | if (copyout((caddr_t)&iocb, addr, sizeof(iocb))) |
328 | u.u_error = EFAULT; | |
329 | break; | |
330 | ||
331 | /* | |
332 | * Hang up line on last close | |
333 | */ | |
334 | ||
335 | case TIOCHPCL: | |
336 | tp->t_state |= HUPCLS; | |
337 | break; | |
338 | ||
339 | case TIOCFLUSH: | |
340 | flushtty(tp); | |
341 | break; | |
342 | ||
343 | /* | |
344 | * ioctl entries to line discipline | |
345 | */ | |
346 | case DIOCSETP: | |
347 | case DIOCGETP: | |
101ba270 BJ |
348 | if ((*linesw[tp->t_line].l_ioctl)(com, tp, addr)) |
349 | u.u_error = ENOTTY; | |
89dc6dfb BJ |
350 | break; |
351 | ||
352 | /* | |
353 | * set and fetch special characters | |
354 | */ | |
355 | case TIOCSETC: | |
8062c8a7 | 356 | if (copyin(addr, (caddr_t)&tun, sizeof(struct tchars))) |
89dc6dfb BJ |
357 | u.u_error = EFAULT; |
358 | break; | |
359 | ||
360 | case TIOCGETC: | |
8062c8a7 BJ |
361 | if (copyout((caddr_t)&tun, addr, sizeof(struct tchars))) |
362 | u.u_error = EFAULT; | |
363 | break; | |
364 | ||
365 | /* local ioctls */ | |
366 | case TIOCSLTC: | |
367 | if (copyin(addr, (caddr_t)&tlun, sizeof (struct ltchars))) | |
368 | u.u_error = EFAULT; | |
369 | break; | |
370 | ||
371 | case TIOCGLTC: | |
372 | if (copyout((caddr_t)&tlun, addr, sizeof (struct ltchars))) | |
373 | u.u_error = EFAULT; | |
374 | break; | |
375 | ||
376 | case FIONREAD: { | |
d1778415 | 377 | off_t nread; |
8062c8a7 | 378 | |
d1778415 BJ |
379 | switch (tp->t_line) { |
380 | ||
381 | case NETLDISC: | |
382 | nread = tp->t_rec ? tp->t_inbuf : 0; | |
383 | break; | |
384 | ||
385 | case NTTYDISC: | |
386 | nread = tp->t_canq.c_cc; | |
387 | if (tp->t_flags & (RAW|CBREAK)) | |
388 | nread += tp->t_rawq.c_cc; | |
389 | break; | |
390 | ||
391 | case 0: | |
392 | /* do something here ... */ | |
393 | ; | |
394 | } | |
8062c8a7 BJ |
395 | if (copyout((caddr_t)&nread, addr, sizeof (off_t))) |
396 | u.u_error = EFAULT; | |
397 | break; | |
398 | } | |
399 | ||
400 | /* | |
401 | * Should allow SPGRP and GPGRP only if tty open for reading. | |
402 | */ | |
403 | case TIOCSPGRP: | |
404 | tp->t_pgrp = (int)addr; | |
405 | break; | |
406 | ||
407 | case TIOCGPGRP: | |
408 | if (copyout((caddr_t)&tp->t_pgrp, addr, sizeof(tp->t_pgrp))) | |
409 | u.u_error = EFAULT; | |
410 | break; | |
411 | ||
412 | /* | |
413 | * Modify local mode word. | |
414 | */ | |
415 | case TIOCLBIS: | |
416 | tp->t_local |= (int)addr; | |
417 | break; | |
418 | ||
419 | case TIOCLBIC: | |
420 | tp->t_local &= ~(int)addr; | |
421 | break; | |
422 | ||
423 | case TIOCLSET: | |
424 | tp->t_local = (int)addr; | |
425 | break; | |
426 | ||
427 | case TIOCLGET: | |
428 | if (copyout((caddr_t)&tp->t_local, addr, sizeof(tp->t_local))) | |
89dc6dfb BJ |
429 | u.u_error = EFAULT; |
430 | break; | |
431 | ||
0dde1c43 BJ |
432 | case TIOCOUTQ: |
433 | if (copyout((caddr_t)&tp->t_outq.c_cc, addr, sizeof(tp->t_outq.c_cc))) | |
434 | u.u_error = EFAULT; | |
435 | break; | |
436 | ||
8062c8a7 | 437 | /* end of locals */ |
89dc6dfb BJ |
438 | default: |
439 | return(0); | |
440 | } | |
441 | return(1); | |
442 | } | |
443 | ||
444 | /* | |
445 | * Wait for output to drain, then flush input waiting. | |
446 | */ | |
447 | wflushtty(tp) | |
448 | register struct tty *tp; | |
449 | { | |
450 | ||
101ba270 | 451 | (void) spl5(); |
89dc6dfb BJ |
452 | while (tp->t_outq.c_cc && tp->t_state&CARR_ON) { |
453 | (*tp->t_oproc)(tp); | |
454 | tp->t_state |= ASLEEP; | |
455 | sleep((caddr_t)&tp->t_outq, TTOPRI); | |
456 | } | |
457 | flushtty(tp); | |
101ba270 | 458 | (void) spl0(); |
89dc6dfb BJ |
459 | } |
460 | ||
461 | /* | |
462 | * flush all TTY queues | |
463 | */ | |
464 | flushtty(tp) | |
465 | register struct tty *tp; | |
466 | { | |
467 | register s; | |
468 | ||
d1778415 BJ |
469 | if (tp->t_line == NETLDISC) |
470 | return; | |
101ba270 | 471 | s = spl6(); |
89dc6dfb BJ |
472 | while (getc(&tp->t_canq) >= 0) |
473 | ; | |
474 | wakeup((caddr_t)&tp->t_rawq); | |
475 | wakeup((caddr_t)&tp->t_outq); | |
89dc6dfb BJ |
476 | tp->t_state &= ~TTSTOP; |
477 | (*cdevsw[major(tp->t_dev)].d_stop)(tp); | |
478 | while (getc(&tp->t_outq) >= 0) | |
479 | ; | |
480 | while (getc(&tp->t_rawq) >= 0) | |
481 | ; | |
482 | tp->t_delct = 0; | |
8062c8a7 | 483 | tp->t_rocount = 0; /* local */ |
6fdc0335 | 484 | tp->t_lstate = 0; |
89dc6dfb BJ |
485 | splx(s); |
486 | } | |
487 | ||
488 | ||
489 | ||
490 | /* | |
491 | * transfer raw input list to canonical list, | |
492 | * doing erase-kill processing and handling escapes. | |
493 | * It waits until a full line has been typed in cooked mode, | |
494 | * or until any character has been typed in raw mode. | |
495 | */ | |
496 | canon(tp) | |
497 | register struct tty *tp; | |
498 | { | |
499 | register char *bp; | |
500 | char *bp1; | |
501 | register int c; | |
502 | int mc; | |
503 | int s; | |
504 | ||
505 | if ((tp->t_flags&(RAW|CBREAK))==0 && tp->t_delct==0 | |
506 | || (tp->t_flags&(RAW|CBREAK))!=0 && tp->t_rawq.c_cc==0) { | |
507 | return(-1); | |
508 | } | |
509 | s = spl0(); | |
510 | loop: | |
511 | bp = &canonb[2]; | |
512 | while ((c=getc(&tp->t_rawq)) >= 0) { | |
513 | if ((tp->t_flags&(RAW|CBREAK))==0) { | |
514 | if (c==0377) { | |
515 | tp->t_delct--; | |
516 | break; | |
517 | } | |
518 | if (bp[-1]!='\\') { | |
519 | if (c==tp->t_erase) { | |
520 | if (bp > &canonb[2]) | |
521 | bp--; | |
522 | continue; | |
523 | } | |
524 | if (c==tp->t_kill) | |
525 | goto loop; | |
526 | if (c==tun.t_eofc) | |
527 | continue; | |
528 | } else { | |
529 | mc = maptab[c]; | |
530 | if (c==tp->t_erase || c==tp->t_kill) | |
531 | mc = c; | |
532 | if (mc && (mc==c || (tp->t_flags&LCASE))) { | |
533 | if (bp[-2] != '\\') | |
534 | c = mc; | |
535 | bp--; | |
536 | } | |
537 | } | |
538 | } | |
539 | *bp++ = c; | |
540 | if (bp>=canonb+CANBSIZ) | |
541 | break; | |
542 | } | |
543 | bp1 = &canonb[2]; | |
101ba270 | 544 | (void) b_to_q(bp1, bp-bp1, &tp->t_canq); |
89dc6dfb BJ |
545 | |
546 | if (tp->t_state&TBLOCK && tp->t_rawq.c_cc < TTYHOG/5) { | |
547 | if (putc(tun.t_startc, &tp->t_outq)==0) { | |
548 | tp->t_state &= ~TBLOCK; | |
549 | ttstart(tp); | |
550 | } | |
551 | tp->t_char = 0; | |
552 | } | |
553 | ||
554 | splx(s); | |
555 | return(0); | |
556 | } | |
557 | ||
558 | ||
559 | /* | |
560 | * block transfer input handler. | |
561 | */ | |
562 | ttyrend(tp, pb, pe) | |
563 | register struct tty *tp; | |
564 | register char *pb, *pe; | |
565 | { | |
566 | int tandem; | |
567 | ||
568 | tandem = tp->t_flags&TANDEM; | |
569 | if (tp->t_flags&RAW) { | |
101ba270 | 570 | (void) b_to_q(pb, pe-pb, &tp->t_rawq); |
89dc6dfb | 571 | if (tp->t_chan) |
101ba270 | 572 | (void) sdata(tp->t_chan); else |
89dc6dfb BJ |
573 | wakeup((caddr_t)&tp->t_rawq); |
574 | } else { | |
575 | tp->t_flags &= ~TANDEM; | |
576 | while (pb < pe) | |
577 | ttyinput(*pb++, tp); | |
578 | tp->t_flags |= tandem; | |
579 | } | |
580 | if (tandem) | |
581 | ttyblock(tp); | |
582 | } | |
583 | ||
584 | /* | |
585 | * Place a character on raw TTY input queue, putting in delimiters | |
586 | * and waking up top half as needed. | |
587 | * Also echo if required. | |
588 | * The arguments are the character and the appropriate | |
589 | * tty structure. | |
590 | */ | |
591 | ttyinput(c, tp) | |
592 | register c; | |
593 | register struct tty *tp; | |
594 | { | |
595 | register int t_flags; | |
596 | register struct chan *cp; | |
597 | ||
598 | tk_nin += 1; | |
599 | c &= 0377; | |
600 | t_flags = tp->t_flags; | |
601 | if (t_flags&TANDEM) | |
602 | ttyblock(tp); | |
603 | if ((t_flags&RAW)==0) { | |
604 | c &= 0177; | |
605 | if (tp->t_state&TTSTOP) { | |
606 | if (c==tun.t_startc) { | |
607 | tp->t_state &= ~TTSTOP; | |
608 | ttstart(tp); | |
609 | return; | |
610 | } | |
611 | if (c==tun.t_stopc) | |
612 | return; | |
613 | tp->t_state &= ~TTSTOP; | |
614 | ttstart(tp); | |
615 | } else { | |
616 | if (c==tun.t_stopc) { | |
617 | tp->t_state |= TTSTOP; | |
618 | (*cdevsw[major(tp->t_dev)].d_stop)(tp); | |
619 | return; | |
620 | } | |
621 | if (c==tun.t_startc) | |
622 | return; | |
623 | } | |
624 | if (c==tun.t_quitc || c==tun.t_intrc) { | |
625 | flushtty(tp); | |
626 | c = (c==tun.t_intrc) ? SIGINT:SIGQUIT; | |
627 | if (tp->t_chan) | |
628 | scontrol(tp->t_chan, M_SIG, c); | |
629 | else | |
8062c8a7 | 630 | gsignal(tp->t_pgrp, c); |
89dc6dfb BJ |
631 | return; |
632 | } | |
633 | if (c=='\r' && t_flags&CRMOD) | |
634 | c = '\n'; | |
635 | } | |
636 | if (tp->t_rawq.c_cc>TTYHOG) { | |
637 | flushtty(tp); | |
638 | return; | |
639 | } | |
640 | if (t_flags&LCASE && c>='A' && c<='Z') | |
641 | c += 'a'-'A'; | |
101ba270 | 642 | (void) putc(c, &tp->t_rawq); |
89dc6dfb BJ |
643 | if (t_flags&(RAW|CBREAK)||(c=='\n'||c==tun.t_eofc||c==tun.t_brkc)) { |
644 | if ((t_flags&(RAW|CBREAK))==0 && putc(0377, &tp->t_rawq)==0) | |
645 | tp->t_delct++; | |
646 | if ((cp=tp->t_chan)!=NULL) | |
101ba270 | 647 | (void) sdata(cp); else |
89dc6dfb BJ |
648 | wakeup((caddr_t)&tp->t_rawq); |
649 | } | |
650 | if (t_flags&ECHO) { | |
651 | ttyoutput(c, tp); | |
652 | if (c==tp->t_kill && (t_flags&(RAW|CBREAK))==0) | |
653 | ttyoutput('\n', tp); | |
654 | ttstart(tp); | |
655 | } | |
656 | } | |
657 | ||
658 | ||
659 | /* | |
660 | * Send stop character on input overflow. | |
661 | */ | |
662 | ttyblock(tp) | |
663 | register struct tty *tp; | |
664 | { | |
665 | register x; | |
666 | x = q1.c_cc + q2.c_cc; | |
667 | if (q1.c_cc > TTYHOG) { | |
668 | flushtty(tp); | |
669 | tp->t_state &= ~TBLOCK; | |
670 | } | |
671 | if (x >= TTYHOG/2) { | |
672 | if (putc(tun.t_stopc, &tp->t_outq)==0) { | |
673 | tp->t_state |= TBLOCK; | |
674 | tp->t_char++; | |
675 | ttstart(tp); | |
676 | } | |
677 | } | |
678 | } | |
679 | ||
680 | /* | |
681 | * put character on TTY output queue, adding delays, | |
682 | * expanding tabs, and handling the CR/NL bit. | |
683 | * It is called both from the top half for output, and from | |
684 | * interrupt level for echoing. | |
685 | * The arguments are the character and the tty structure. | |
686 | */ | |
687 | ttyoutput(c, tp) | |
688 | register c; | |
689 | register struct tty *tp; | |
690 | { | |
691 | register char *colp; | |
692 | register ctype; | |
693 | ||
89dc6dfb BJ |
694 | /* |
695 | * Ignore EOT in normal mode to avoid hanging up | |
696 | * certain terminals. | |
697 | * In raw mode dump the char unchanged. | |
698 | */ | |
89dc6dfb BJ |
699 | if ((tp->t_flags&RAW)==0) { |
700 | c &= 0177; | |
701 | if ((tp->t_flags&CBREAK)==0 && c==CEOT) | |
702 | return; | |
703 | } else { | |
101ba270 BJ |
704 | tk_nout++; |
705 | (void) putc(c, &tp->t_outq); | |
89dc6dfb BJ |
706 | return; |
707 | } | |
708 | ||
709 | /* | |
710 | * Turn tabs to spaces as required | |
711 | */ | |
712 | if (c=='\t' && (tp->t_flags&TBDELAY)==XTABS) { | |
101ba270 BJ |
713 | c = 8 - (tp->t_col & 7); |
714 | (void) b_to_q(" ", c, &tp->t_outq); | |
715 | tp->t_col += c; | |
716 | tk_nout += c; | |
89dc6dfb BJ |
717 | return; |
718 | } | |
101ba270 | 719 | tk_nout++; |
89dc6dfb BJ |
720 | /* |
721 | * for upper-case-only terminals, | |
722 | * generate escapes. | |
723 | */ | |
724 | if (tp->t_flags&LCASE) { | |
725 | colp = "({)}!|^~'`"; | |
726 | while(*colp++) | |
727 | if(c == *colp++) { | |
728 | ttyoutput('\\', tp); | |
729 | c = colp[-2]; | |
730 | break; | |
731 | } | |
732 | if ('a'<=c && c<='z') | |
733 | c += 'A' - 'a'; | |
734 | } | |
735 | /* | |
736 | * turn <nl> to <cr><lf> if desired. | |
737 | */ | |
738 | if (c=='\n' && tp->t_flags&CRMOD) | |
739 | ttyoutput('\r', tp); | |
101ba270 | 740 | (void) putc(c, &tp->t_outq); |
89dc6dfb BJ |
741 | /* |
742 | * Calculate delays. | |
743 | * The numbers here represent clock ticks | |
744 | * and are not necessarily optimal for all terminals. | |
745 | * The delays are indicated by characters above 0200. | |
746 | * In raw mode there are no delays and the | |
747 | * transmission path is 8 bits wide. | |
748 | */ | |
749 | colp = &tp->t_col; | |
750 | ctype = partab[c]; | |
751 | c = 0; | |
752 | switch (ctype&077) { | |
753 | ||
754 | /* ordinary */ | |
755 | case 0: | |
756 | (*colp)++; | |
757 | ||
758 | /* non-printing */ | |
759 | case 1: | |
760 | break; | |
761 | ||
762 | /* backspace */ | |
763 | case 2: | |
764 | if (*colp) | |
765 | (*colp)--; | |
766 | break; | |
767 | ||
768 | /* newline */ | |
769 | case 3: | |
770 | ctype = (tp->t_flags >> 8) & 03; | |
771 | if(ctype == 1) { /* tty 37 */ | |
772 | if (*colp) | |
773 | c = max(((unsigned)*colp>>4) + 3, (unsigned)6); | |
774 | } else | |
775 | if(ctype == 2) { /* vt05 */ | |
776 | c = 6; | |
777 | } | |
778 | *colp = 0; | |
779 | break; | |
780 | ||
781 | /* tab */ | |
782 | case 4: | |
783 | ctype = (tp->t_flags >> 10) & 03; | |
784 | if(ctype == 1) { /* tty 37 */ | |
785 | c = 1 - (*colp | ~07); | |
786 | if(c < 5) | |
787 | c = 0; | |
788 | } | |
789 | *colp |= 07; | |
790 | (*colp)++; | |
791 | break; | |
792 | ||
793 | /* vertical motion */ | |
794 | case 5: | |
795 | if(tp->t_flags & VTDELAY) /* tty 37 */ | |
796 | c = 0177; | |
797 | break; | |
798 | ||
799 | /* carriage return */ | |
800 | case 6: | |
801 | ctype = (tp->t_flags >> 12) & 03; | |
802 | if(ctype == 1) { /* tn 300 */ | |
803 | c = 5; | |
804 | } else if(ctype == 2) { /* ti 700 */ | |
805 | c = 10; | |
806 | } else if(ctype == 3) { /* concept 100 */ | |
807 | int i; | |
808 | for (i= *colp; i<9; i++) | |
101ba270 | 809 | (void) putc(0177, &tp->t_outq); |
89dc6dfb BJ |
810 | } |
811 | *colp = 0; | |
812 | } | |
813 | if(c) | |
101ba270 | 814 | (void) putc(c|0200, &tp->t_outq); |
89dc6dfb BJ |
815 | } |
816 | ||
817 | /* | |
818 | * Restart typewriter output following a delay | |
819 | * timeout. | |
820 | * The name of the routine is passed to the timeout | |
821 | * subroutine and it is called during a clock interrupt. | |
822 | */ | |
823 | ttrstrt(tp) | |
824 | register struct tty *tp; | |
825 | { | |
826 | ||
827 | tp->t_state &= ~TIMEOUT; | |
828 | ttstart(tp); | |
829 | } | |
830 | ||
831 | /* | |
832 | * Start output on the typewriter. It is used from the top half | |
833 | * after some characters have been put on the output queue, | |
834 | * from the interrupt routine to transmit the next | |
835 | * character, and after a timeout has finished. | |
836 | */ | |
837 | ttstart(tp) | |
838 | register struct tty *tp; | |
839 | { | |
840 | register s; | |
841 | ||
842 | s = spl5(); | |
843 | if((tp->t_state&(TIMEOUT|TTSTOP|BUSY)) == 0) | |
844 | (*tp->t_oproc)(tp); | |
845 | splx(s); | |
846 | } | |
847 | ||
848 | /* | |
849 | * Called from device's read routine after it has | |
850 | * calculated the tty-structure given as argument. | |
851 | */ | |
852 | ttread(tp) | |
853 | register struct tty *tp; | |
854 | { | |
855 | register s; | |
856 | ||
857 | if ((tp->t_state&CARR_ON)==0) | |
858 | return(-1); | |
859 | s = spl5(); | |
860 | if (tp->t_canq.c_cc==0) | |
861 | while (canon(tp)<0) | |
862 | if (tp->t_chan==NULL) { | |
863 | sleep((caddr_t)&tp->t_rawq, TTIPRI); | |
864 | } else { | |
865 | splx(s); | |
866 | return(0); | |
867 | } | |
868 | splx(s); | |
869 | while (tp->t_canq.c_cc && passc(getc(&tp->t_canq))>=0) | |
870 | ; | |
871 | return(tp->t_rawq.c_cc+tp->t_canq.c_cc); | |
872 | } | |
873 | ||
874 | /* | |
875 | * Called from the device's write routine after it has | |
876 | * calculated the tty-structure given as argument. | |
877 | */ | |
878 | caddr_t | |
879 | ttwrite(tp) | |
880 | register struct tty *tp; | |
881 | { | |
882 | /* | |
883 | * THE POSITIONING OF CP, CC, AND CE ARE CRITICAL | |
884 | * AND MUST NOT BE CHANGED WITHOUT PATCHING | |
885 | * THE 'ASM' INLINES BELOW. WATCH OUT. | |
886 | */ | |
887 | register char *cp; | |
888 | register int cc, ce; | |
889 | register i; | |
890 | char obuf[OBUFSIZ]; | |
891 | ||
892 | if ((tp->t_state&CARR_ON)==0) | |
893 | return(NULL); | |
894 | while (u.u_count) { | |
895 | cc = MIN(u.u_count, OBUFSIZ); | |
896 | cp = obuf; | |
897 | iomove(cp, (unsigned)cc, B_WRITE); | |
898 | if (u.u_error) | |
899 | break; | |
101ba270 | 900 | (void) spl5(); |
89dc6dfb BJ |
901 | while (tp->t_outq.c_cc > TTHIWAT) { |
902 | ttstart(tp); | |
903 | tp->t_state |= ASLEEP; | |
904 | if (tp->t_chan) { | |
905 | u.u_base -= cc; | |
906 | u.u_offset -= cc; | |
907 | u.u_count += cc; | |
101ba270 | 908 | (void) spl0(); |
89dc6dfb BJ |
909 | return((caddr_t)&tp->t_outq); |
910 | } | |
911 | sleep((caddr_t)&tp->t_outq, TTOPRI); | |
912 | } | |
101ba270 | 913 | (void) spl0(); |
89dc6dfb BJ |
914 | if (tp->t_flags&LCASE) { |
915 | while (cc--) | |
916 | ttyoutput(*cp++,tp); | |
917 | continue; | |
918 | } | |
919 | while (cc) { | |
920 | if (tp->t_flags&RAW) | |
921 | ce=cc; | |
922 | else { | |
923 | #ifdef VAX | |
924 | asm(" scanc r9,(r10),_partab,$077"); | |
925 | asm(" subl3 r0,r9,r8"); | |
926 | #else | |
927 | ce=0; | |
928 | while(((partab[*(cp+ce)]&077)==0)&&(ce<cc)) | |
929 | ce++; | |
930 | #endif | |
931 | if (ce==0) { | |
932 | ttyoutput(*cp++,tp); | |
933 | cc--; | |
101ba270 | 934 | goto check; |
89dc6dfb BJ |
935 | } |
936 | } | |
937 | i=b_to_q(cp,ce,&tp->t_outq); | |
938 | ce-=i; | |
939 | tk_nout+=ce; | |
940 | tp->t_col+=ce; | |
941 | cp+=ce; | |
942 | cc-=ce; | |
101ba270 BJ |
943 | check: |
944 | if (tp->t_outq.c_cc > TTHIWAT) { | |
945 | (void) spl5(); | |
89dc6dfb BJ |
946 | while (tp->t_outq.c_cc > TTHIWAT) { |
947 | ttstart(tp); | |
948 | tp->t_state |= ASLEEP; | |
949 | sleep((caddr_t)&tp->t_outq, TTOPRI); | |
950 | } | |
101ba270 | 951 | (void) spl0(); |
89dc6dfb BJ |
952 | } |
953 | } | |
954 | } | |
955 | ttstart(tp); | |
956 | return(NULL); | |
957 | } |