Commit | Line | Data |
---|---|---|
4147b3f6 | 1 | /* tty.c 4.24 82/07/24 */ |
89dc6dfb BJ |
2 | |
3 | /* | |
50e2732b | 4 | * TTY subroutines common to more than one line discipline |
89dc6dfb BJ |
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" | |
89dc6dfb BJ |
12 | #include "../h/inode.h" |
13 | #include "../h/file.h" | |
14 | #include "../h/reg.h" | |
15 | #include "../h/conf.h" | |
16 | #include "../h/buf.h" | |
d1778415 | 17 | #include "../h/dk.h" |
89dc6dfb | 18 | |
8bba2b8f RE |
19 | /* |
20 | * Table giving parity for characters and indicating | |
21 | * character classes to tty driver. In particular, | |
22 | * if the low 6 bits are 0, then the character needs | |
23 | * no special processing on output. | |
24 | */ | |
25 | ||
26 | char partab[] = { | |
27 | 0001,0201,0201,0001,0201,0001,0001,0201, | |
28 | 0202,0004,0003,0201,0005,0206,0201,0001, | |
29 | 0201,0001,0001,0201,0001,0201,0201,0001, | |
30 | 0001,0201,0201,0001,0201,0001,0001,0201, | |
31 | 0200,0000,0000,0200,0000,0200,0200,0000, | |
32 | 0000,0200,0200,0000,0200,0000,0000,0200, | |
33 | 0000,0200,0200,0000,0200,0000,0000,0200, | |
34 | 0200,0000,0000,0200,0000,0200,0200,0000, | |
35 | 0200,0000,0000,0200,0000,0200,0200,0000, | |
36 | 0000,0200,0200,0000,0200,0000,0000,0200, | |
37 | 0000,0200,0200,0000,0200,0000,0000,0200, | |
38 | 0200,0000,0000,0200,0000,0200,0200,0000, | |
39 | 0000,0200,0200,0000,0200,0000,0000,0200, | |
40 | 0200,0000,0000,0200,0000,0200,0200,0000, | |
41 | 0200,0000,0000,0200,0000,0200,0200,0000, | |
42 | 0000,0200,0200,0000,0200,0000,0000,0201, | |
43 | ||
44 | /* | |
45 | * 7 bit ascii ends with the last character above, | |
46 | * but we contine through all 256 codes for the sake | |
47 | * of the tty output routines which use special vax | |
48 | * instructions which need a 256 character trt table. | |
49 | */ | |
50 | ||
51 | 0007,0007,0007,0007,0007,0007,0007,0007, | |
52 | 0007,0007,0007,0007,0007,0007,0007,0007, | |
53 | 0007,0007,0007,0007,0007,0007,0007,0007, | |
54 | 0007,0007,0007,0007,0007,0007,0007,0007, | |
55 | 0007,0007,0007,0007,0007,0007,0007,0007, | |
56 | 0007,0007,0007,0007,0007,0007,0007,0007, | |
57 | 0007,0007,0007,0007,0007,0007,0007,0007, | |
58 | 0007,0007,0007,0007,0007,0007,0007,0007, | |
59 | 0007,0007,0007,0007,0007,0007,0007,0007, | |
60 | 0007,0007,0007,0007,0007,0007,0007,0007, | |
61 | 0007,0007,0007,0007,0007,0007,0007,0007, | |
62 | 0007,0007,0007,0007,0007,0007,0007,0007, | |
63 | 0007,0007,0007,0007,0007,0007,0007,0007, | |
64 | 0007,0007,0007,0007,0007,0007,0007,0007, | |
65 | 0007,0007,0007,0007,0007,0007,0007,0007, | |
66 | 0007,0007,0007,0007,0007,0007,0007,0007 | |
67 | }; | |
89dc6dfb | 68 | |
89dc6dfb BJ |
69 | /* |
70 | * Input mapping table-- if an entry is non-zero, when the | |
71 | * corresponding character is typed preceded by "\" the escape | |
72 | * sequence is replaced by the table value. Mostly used for | |
73 | * upper-case only terminals. | |
74 | */ | |
75 | ||
76 | char maptab[] ={ | |
77 | 000,000,000,000,000,000,000,000, | |
78 | 000,000,000,000,000,000,000,000, | |
79 | 000,000,000,000,000,000,000,000, | |
80 | 000,000,000,000,000,000,000,000, | |
81 | 000,'|',000,000,000,000,000,'`', | |
82 | '{','}',000,000,000,000,000,000, | |
83 | 000,000,000,000,000,000,000,000, | |
84 | 000,000,000,000,000,000,000,000, | |
85 | 000,000,000,000,000,000,000,000, | |
86 | 000,000,000,000,000,000,000,000, | |
87 | 000,000,000,000,000,000,000,000, | |
88 | 000,000,000,000,000,000,'~',000, | |
89 | 000,'A','B','C','D','E','F','G', | |
90 | 'H','I','J','K','L','M','N','O', | |
91 | 'P','Q','R','S','T','U','V','W', | |
92 | 'X','Y','Z',000,000,000,000,000, | |
93 | }; | |
94 | ||
0d65848d BJ |
95 | short tthiwat[16] = |
96 | { 100,100,100,100,100,100,100,200,200,400,400,400,650,650,650,650 }; | |
97 | short ttlowat[16] = | |
98 | { 30, 30, 30, 30, 30, 30, 30, 50, 50,120,120,120,125,125,125,125 }; | |
99 | ||
89dc6dfb BJ |
100 | #define OBUFSIZ 100 |
101 | ||
89dc6dfb BJ |
102 | /* |
103 | * set default control characters. | |
104 | */ | |
105 | ttychars(tp) | |
106 | register struct tty *tp; | |
107 | { | |
8062c8a7 | 108 | |
89dc6dfb BJ |
109 | tun.t_intrc = CINTR; |
110 | tun.t_quitc = CQUIT; | |
111 | tun.t_startc = CSTART; | |
112 | tun.t_stopc = CSTOP; | |
113 | tun.t_eofc = CEOT; | |
114 | tun.t_brkc = CBRK; | |
115 | tp->t_erase = CERASE; | |
116 | tp->t_kill = CKILL; | |
8062c8a7 | 117 | /* begin local */ |
6fdc0335 BJ |
118 | tlun.t_suspc = CTRL(z); |
119 | tlun.t_dsuspc = CTRL(y); | |
8062c8a7 BJ |
120 | tlun.t_rprntc = CTRL(r); |
121 | tlun.t_flushc = CTRL(o); | |
122 | tlun.t_werasc = CTRL(w); | |
123 | tlun.t_lnextc = CTRL(v); | |
8062c8a7 BJ |
124 | tp->t_local = 0; |
125 | tp->t_lstate = 0; | |
126 | /* end local */ | |
89dc6dfb BJ |
127 | } |
128 | ||
129 | /* | |
50e2732b | 130 | * Wait for output to drain, then flush input waiting. |
89dc6dfb | 131 | */ |
50e2732b | 132 | wflushtty(tp) |
941944c9 | 133 | register struct tty *tp; |
89dc6dfb BJ |
134 | { |
135 | ||
50e2732b | 136 | (void) spl5(); |
4c67f645 BJ |
137 | while (tp->t_outq.c_cc && tp->t_state&TS_CARR_ON |
138 | && tp->t_oproc) { /* kludge for pty */ | |
50e2732b | 139 | (*tp->t_oproc)(tp); |
941944c9 | 140 | tp->t_state |= TS_ASLEEP; |
50e2732b BJ |
141 | sleep((caddr_t)&tp->t_outq, TTOPRI); |
142 | } | |
39697bd8 | 143 | flushtty(tp, FREAD); |
50e2732b | 144 | (void) spl0(); |
89dc6dfb BJ |
145 | } |
146 | ||
147 | /* | |
50e2732b | 148 | * flush all TTY queues |
89dc6dfb | 149 | */ |
50e2732b BJ |
150 | flushtty(tp, rw) |
151 | register struct tty *tp; | |
89dc6dfb | 152 | { |
50e2732b BJ |
153 | register s; |
154 | ||
50e2732b BJ |
155 | s = spl6(); |
156 | if (rw & FREAD) { | |
157 | while (getc(&tp->t_canq) >= 0) | |
158 | ; | |
159 | wakeup((caddr_t)&tp->t_rawq); | |
160 | } | |
161 | if (rw & FWRITE) { | |
162 | wakeup((caddr_t)&tp->t_outq); | |
941944c9 | 163 | tp->t_state &= ~TS_TTSTOP; |
39697bd8 | 164 | (*cdevsw[major(tp->t_dev)].d_stop)(tp, rw); |
50e2732b BJ |
165 | while (getc(&tp->t_outq) >= 0) |
166 | ; | |
167 | } | |
168 | if (rw & FREAD) { | |
169 | while (getc(&tp->t_rawq) >= 0) | |
170 | ; | |
171 | tp->t_delct = 0; | |
172 | tp->t_rocount = 0; /* local */ | |
173 | tp->t_rocol = 0; | |
174 | tp->t_lstate = 0; | |
175 | } | |
176 | splx(s); | |
89dc6dfb BJ |
177 | } |
178 | ||
50e2732b BJ |
179 | /* |
180 | * Send stop character on input overflow. | |
181 | */ | |
182 | ttyblock(tp) | |
183 | register struct tty *tp; | |
89dc6dfb | 184 | { |
50e2732b BJ |
185 | register x; |
186 | x = tp->t_rawq.c_cc + tp->t_canq.c_cc; | |
187 | if (tp->t_rawq.c_cc > TTYHOG) { | |
188 | flushtty(tp, FREAD|FWRITE); | |
941944c9 | 189 | tp->t_state &= ~TS_TBLOCK; |
50e2732b BJ |
190 | } |
191 | if (x >= TTYHOG/2) { | |
192 | if (putc(tun.t_stopc, &tp->t_outq)==0) { | |
941944c9 | 193 | tp->t_state |= TS_TBLOCK; |
50e2732b BJ |
194 | tp->t_char++; |
195 | ttstart(tp); | |
196 | } | |
197 | } | |
89dc6dfb BJ |
198 | } |
199 | ||
101ba270 | 200 | /* |
50e2732b BJ |
201 | * Restart typewriter output following a delay |
202 | * timeout. | |
203 | * The name of the routine is passed to the timeout | |
204 | * subroutine and it is called during a clock interrupt. | |
101ba270 | 205 | */ |
50e2732b | 206 | ttrstrt(tp) |
101ba270 | 207 | register struct tty *tp; |
101ba270 BJ |
208 | { |
209 | ||
545f5350 BJ |
210 | if (tp == 0) { |
211 | printf("ttrstrt: arg was 0!\n"); | |
212 | return; | |
213 | } | |
941944c9 | 214 | tp->t_state &= ~TS_TIMEOUT; |
50e2732b | 215 | ttstart(tp); |
101ba270 BJ |
216 | } |
217 | ||
89dc6dfb | 218 | /* |
50e2732b BJ |
219 | * Start output on the typewriter. It is used from the top half |
220 | * after some characters have been put on the output queue, | |
221 | * from the interrupt routine to transmit the next | |
222 | * character, and after a timeout has finished. | |
89dc6dfb | 223 | */ |
50e2732b BJ |
224 | ttstart(tp) |
225 | register struct tty *tp; | |
89dc6dfb | 226 | { |
50e2732b | 227 | register s; |
8062c8a7 | 228 | |
50e2732b | 229 | s = spl5(); |
4c67f645 BJ |
230 | if((tp->t_state&(TS_TIMEOUT|TS_TTSTOP|TS_BUSY)) == 0 && |
231 | tp->t_oproc) /* kludge for pty */ | |
50e2732b BJ |
232 | (*tp->t_oproc)(tp); |
233 | splx(s); | |
89dc6dfb BJ |
234 | } |
235 | ||
236 | /* | |
50e2732b | 237 | * Common code for tty ioctls. |
89dc6dfb | 238 | */ |
49c84d3f | 239 | /*ARGSUSED*/ |
0cbf0d70 | 240 | ttioctl(tp, com, addr, flag) |
89dc6dfb BJ |
241 | register struct tty *tp; |
242 | caddr_t addr; | |
243 | { | |
0cbf0d70 | 244 | int dev; |
89dc6dfb | 245 | unsigned t; |
8062c8a7 | 246 | struct sgttyb iocb; |
de857265 | 247 | struct clist tq; |
89dc6dfb | 248 | extern int nldisp; |
50450a20 | 249 | register c; |
da1392b6 | 250 | int temp; |
89dc6dfb | 251 | |
c6fe3a50 BJ |
252 | /* |
253 | * This is especially so that isatty() will | |
254 | * fail when carrier is gone. | |
255 | */ | |
941944c9 | 256 | if ((tp->t_state&TS_CARR_ON) == 0) { |
c6fe3a50 BJ |
257 | u.u_error = EBADF; |
258 | return (1); | |
259 | } | |
260 | ||
0cbf0d70 | 261 | dev = tp->t_dev; |
50e2732b BJ |
262 | /* |
263 | * If the ioctl involves modification, | |
264 | * insist on being able to write the device, | |
265 | * and hang if in the background. | |
266 | */ | |
267 | switch(com) { | |
268 | ||
c6fe3a50 BJ |
269 | case TIOCSETD: |
270 | case TIOCSETP: | |
271 | case TIOCSETN: | |
50e2732b BJ |
272 | case TIOCFLUSH: |
273 | case TIOCSETC: | |
274 | case TIOCSLTC: | |
275 | case TIOCSPGRP: | |
276 | case TIOCLBIS: | |
277 | case TIOCLBIC: | |
278 | case TIOCLSET: | |
279 | case TIOCSTI: | |
c6fe3a50 | 280 | /* this is reasonable, but impractical... |
50e2732b BJ |
281 | if ((flag & FWRITE) == 0) { |
282 | u.u_error = EBADF; | |
283 | return (1); | |
284 | } | |
c6fe3a50 | 285 | */ |
50e2732b BJ |
286 | while (tp->t_line == NTTYDISC && |
287 | u.u_procp->p_pgrp != tp->t_pgrp && tp == u.u_ttyp && | |
288 | (u.u_procp->p_flag&SVFORK) == 0 && | |
289 | u.u_signal[SIGTTOU] != SIG_IGN && | |
022f2340 BJ |
290 | u.u_signal[SIGTTOU] != SIG_HOLD |
291 | /* | |
292 | && | |
50e2732b | 293 | (u.u_procp->p_flag&SDETACH)==0) { |
022f2340 BJ |
294 | */ |
295 | ) { | |
50e2732b BJ |
296 | gsignal(u.u_procp->p_pgrp, SIGTTOU); |
297 | sleep((caddr_t)&lbolt, TTOPRI); | |
298 | } | |
299 | break; | |
300 | } | |
301 | ||
302 | /* | |
303 | * Process the ioctl. | |
304 | */ | |
89dc6dfb BJ |
305 | switch(com) { |
306 | ||
307 | /* | |
50e2732b | 308 | * Get discipline number |
89dc6dfb BJ |
309 | */ |
310 | case TIOCGETD: | |
311 | t = tp->t_line; | |
312 | if (copyout((caddr_t)&t, addr, sizeof(t))) | |
313 | u.u_error = EFAULT; | |
314 | break; | |
315 | ||
316 | /* | |
50e2732b | 317 | * Set line discipline |
89dc6dfb BJ |
318 | */ |
319 | case TIOCSETD: | |
320 | if (copyin(addr, (caddr_t)&t, sizeof(t))) { | |
321 | u.u_error = EFAULT; | |
322 | break; | |
323 | } | |
324 | if (t >= nldisp) { | |
325 | u.u_error = ENXIO; | |
326 | break; | |
327 | } | |
8062c8a7 | 328 | (void) spl5(); |
89dc6dfb BJ |
329 | if (tp->t_line) |
330 | (*linesw[tp->t_line].l_close)(tp); | |
331 | if (t) | |
332 | (*linesw[t].l_open)(dev, tp, addr); | |
333 | if (u.u_error==0) | |
334 | tp->t_line = t; | |
8062c8a7 | 335 | (void) spl0(); |
89dc6dfb BJ |
336 | break; |
337 | ||
152c2598 BJ |
338 | /* |
339 | * Prevent more opens on channel | |
340 | */ | |
341 | case TIOCEXCL: | |
342 | tp->t_state |= TS_XCLUDE; | |
343 | break; | |
344 | ||
345 | case TIOCNXCL: | |
346 | tp->t_state &= ~TS_XCLUDE; | |
347 | break; | |
348 | ||
89dc6dfb BJ |
349 | /* |
350 | * Set new parameters | |
351 | */ | |
352 | case TIOCSETP: | |
de857265 | 353 | case TIOCSETN: |
89dc6dfb BJ |
354 | if (copyin(addr, (caddr_t)&iocb, sizeof(iocb))) { |
355 | u.u_error = EFAULT; | |
356 | return(1); | |
357 | } | |
101ba270 | 358 | (void) spl5(); |
e1d74936 BJ |
359 | if (tp->t_flags&RAW || iocb.sg_flags&RAW || |
360 | com == TIOCSETP) | |
361 | wflushtty(tp); | |
362 | else if ((tp->t_flags&CBREAK) != (iocb.sg_flags&CBREAK)) { | |
363 | if (iocb.sg_flags & CBREAK) { | |
364 | catq(&tp->t_rawq, &tp->t_canq); | |
365 | tq = tp->t_rawq; | |
366 | tp->t_rawq = tp->t_canq; | |
367 | tp->t_canq = tq; | |
368 | } else { | |
369 | tp->t_local |= LPENDIN; | |
370 | ttwakeup(tp); | |
8062c8a7 BJ |
371 | } |
372 | } | |
e1d74936 BJ |
373 | tp->t_ispeed = iocb.sg_ispeed; |
374 | tp->t_ospeed = iocb.sg_ospeed; | |
8062c8a7 BJ |
375 | tp->t_erase = iocb.sg_erase; |
376 | tp->t_kill = iocb.sg_kill; | |
377 | tp->t_flags = iocb.sg_flags; | |
627c86ee | 378 | if (tp->t_flags & RAW) { |
941944c9 | 379 | tp->t_state &= ~TS_TTSTOP; |
627c86ee KB |
380 | ttstart(tp); |
381 | } | |
101ba270 | 382 | (void) spl0(); |
89dc6dfb BJ |
383 | break; |
384 | ||
385 | /* | |
50e2732b | 386 | * Send current parameters to user |
89dc6dfb BJ |
387 | */ |
388 | case TIOCGETP: | |
8062c8a7 BJ |
389 | iocb.sg_ispeed = tp->t_ispeed; |
390 | iocb.sg_ospeed = tp->t_ospeed; | |
391 | iocb.sg_erase = tp->t_erase; | |
392 | iocb.sg_kill = tp->t_kill; | |
393 | iocb.sg_flags = tp->t_flags; | |
89dc6dfb BJ |
394 | if (copyout((caddr_t)&iocb, addr, sizeof(iocb))) |
395 | u.u_error = EFAULT; | |
396 | break; | |
397 | ||
398 | /* | |
399 | * Hang up line on last close | |
400 | */ | |
89dc6dfb | 401 | case TIOCHPCL: |
941944c9 | 402 | tp->t_state |= TS_HUPCLS; |
89dc6dfb BJ |
403 | break; |
404 | ||
7d973a4d KB |
405 | case TIOCFLUSH: { |
406 | int flags; | |
407 | if (addr == 0) | |
408 | flags = FREAD|FWRITE; | |
409 | else if (copyin(addr, (caddr_t)&flags, sizeof (flags))) { | |
410 | u.u_error = EFAULT; | |
7344d489 | 411 | return(1); |
7d973a4d KB |
412 | } |
413 | flushtty(tp, flags); | |
89dc6dfb | 414 | break; |
4568c08e | 415 | } |
89dc6dfb | 416 | |
941944c9 BJ |
417 | case FIONBIO: { |
418 | int nbio; | |
419 | if (copyin(addr, (caddr_t)&nbio, sizeof (nbio))) { | |
420 | u.u_error = EFAULT; | |
421 | return(1); | |
422 | } | |
423 | if (nbio) | |
424 | tp->t_state |= TS_NBIO; | |
425 | else | |
426 | tp->t_state &= ~TS_NBIO; | |
427 | break; | |
428 | } | |
429 | ||
a66e4149 BJ |
430 | case FIOASYNC: { |
431 | int async; | |
432 | if (copyin(addr, (caddr_t)&async, sizeof (async))) { | |
433 | u.u_error = EFAULT; | |
434 | return(1); | |
435 | } | |
436 | if (async) | |
437 | tp->t_state |= TS_ASYNC; | |
438 | else | |
439 | tp->t_state &= ~TS_ASYNC; | |
440 | break; | |
441 | } | |
442 | ||
89dc6dfb | 443 | /* |
50e2732b | 444 | * Set and fetch special characters |
89dc6dfb BJ |
445 | */ |
446 | case TIOCSETC: | |
8062c8a7 | 447 | if (copyin(addr, (caddr_t)&tun, sizeof(struct tchars))) |
89dc6dfb BJ |
448 | u.u_error = EFAULT; |
449 | break; | |
450 | ||
451 | case TIOCGETC: | |
8062c8a7 BJ |
452 | if (copyout((caddr_t)&tun, addr, sizeof(struct tchars))) |
453 | u.u_error = EFAULT; | |
454 | break; | |
455 | ||
456 | /* local ioctls */ | |
50e2732b BJ |
457 | /* |
458 | * Set/get local special characters. | |
459 | */ | |
8062c8a7 BJ |
460 | case TIOCSLTC: |
461 | if (copyin(addr, (caddr_t)&tlun, sizeof (struct ltchars))) | |
462 | u.u_error = EFAULT; | |
463 | break; | |
464 | ||
465 | case TIOCGLTC: | |
466 | if (copyout((caddr_t)&tlun, addr, sizeof (struct ltchars))) | |
467 | u.u_error = EFAULT; | |
468 | break; | |
469 | ||
50e2732b BJ |
470 | /* |
471 | * Return number of characters immediately available. | |
472 | */ | |
8062c8a7 | 473 | case FIONREAD: { |
e1d74936 | 474 | off_t nread = ttnread(tp); |
8062c8a7 BJ |
475 | if (copyout((caddr_t)&nread, addr, sizeof (off_t))) |
476 | u.u_error = EFAULT; | |
477 | break; | |
478 | } | |
479 | ||
480 | /* | |
481 | * Should allow SPGRP and GPGRP only if tty open for reading. | |
482 | */ | |
483 | case TIOCSPGRP: | |
da1392b6 BJ |
484 | if (copyin(addr, (caddr_t)&tp->t_pgrp, sizeof (tp->t_pgrp))) |
485 | u.u_error = EFAULT; | |
8062c8a7 BJ |
486 | break; |
487 | ||
488 | case TIOCGPGRP: | |
489 | if (copyout((caddr_t)&tp->t_pgrp, addr, sizeof(tp->t_pgrp))) | |
490 | u.u_error = EFAULT; | |
491 | break; | |
492 | ||
493 | /* | |
494 | * Modify local mode word. | |
495 | */ | |
496 | case TIOCLBIS: | |
da1392b6 BJ |
497 | if (copyin(addr, (caddr_t)&temp, sizeof (tp->t_local))) |
498 | u.u_error = EFAULT; | |
499 | else | |
500 | tp->t_local |= temp; | |
8062c8a7 BJ |
501 | break; |
502 | ||
503 | case TIOCLBIC: | |
da1392b6 BJ |
504 | if (copyin(addr, (caddr_t)&temp, sizeof (tp->t_local))) |
505 | u.u_error = EFAULT; | |
506 | else | |
507 | tp->t_local &= ~temp; | |
8062c8a7 BJ |
508 | break; |
509 | ||
510 | case TIOCLSET: | |
da1392b6 BJ |
511 | if (copyin(addr, (caddr_t)&temp, sizeof (tp->t_local))) |
512 | u.u_error = EFAULT; | |
513 | else | |
514 | tp->t_local = temp; | |
8062c8a7 BJ |
515 | break; |
516 | ||
517 | case TIOCLGET: | |
518 | if (copyout((caddr_t)&tp->t_local, addr, sizeof(tp->t_local))) | |
89dc6dfb BJ |
519 | u.u_error = EFAULT; |
520 | break; | |
521 | ||
50e2732b BJ |
522 | /* |
523 | * Return number of characters in | |
524 | * the output. | |
525 | */ | |
0dde1c43 BJ |
526 | case TIOCOUTQ: |
527 | if (copyout((caddr_t)&tp->t_outq.c_cc, addr, sizeof(tp->t_outq.c_cc))) | |
528 | u.u_error = EFAULT; | |
529 | break; | |
530 | ||
50e2732b BJ |
531 | /* |
532 | * Simulate typing of a character at the terminal. | |
533 | */ | |
50450a20 BJ |
534 | case TIOCSTI: |
535 | c = fubyte(addr); | |
536 | if (u.u_uid && u.u_ttyp != tp || c < 0) | |
537 | u.u_error = EFAULT; | |
538 | else | |
539 | (*linesw[tp->t_line].l_rint)(c, tp); | |
540 | break; | |
bfcf09ee BJ |
541 | |
542 | case TIOCSTOP: | |
543 | c = spl5(); | |
544 | if ((tp->t_state & TS_TTSTOP) == 0) { | |
545 | tp->t_state |= TS_TTSTOP; | |
546 | (*cdevsw[major(tp->t_dev)].d_stop)(tp, 0); | |
547 | } | |
548 | splx(c); | |
549 | break; | |
550 | ||
551 | case TIOCSTART: | |
552 | c = spl5(); | |
553 | if ((tp->t_state & TS_TTSTOP) || (tp->t_local & LFLUSHO)) { | |
554 | tp->t_state &= ~TS_TTSTOP; | |
555 | tp->t_local &= ~LFLUSHO; | |
556 | ttstart(tp); | |
557 | } | |
558 | splx(c); | |
559 | break; | |
560 | ||
8062c8a7 | 561 | /* end of locals */ |
50450a20 | 562 | |
89dc6dfb BJ |
563 | default: |
564 | return(0); | |
565 | } | |
566 | return(1); | |
567 | } | |
e1d74936 BJ |
568 | |
569 | ttnread(tp) | |
570 | struct tty *tp; | |
571 | { | |
572 | int nread = 0; | |
573 | ||
574 | if (tp->t_local & LPENDIN) | |
575 | ttypend(tp); | |
576 | nread = tp->t_canq.c_cc; | |
577 | if (tp->t_flags & (RAW|CBREAK)) | |
578 | nread += tp->t_rawq.c_cc; | |
579 | return (nread); | |
580 | } | |
581 | ||
941944c9 | 582 | ttselect(dev, rw) |
e1d74936 | 583 | dev_t dev; |
941944c9 | 584 | int rw; |
e1d74936 BJ |
585 | { |
586 | register struct tty *tp = &cdevsw[major(dev)].d_ttys[minor(dev)]; | |
587 | int nread; | |
941944c9 | 588 | int s = spl5(); |
e1d74936 | 589 | |
941944c9 | 590 | switch (rw) { |
e1d74936 BJ |
591 | |
592 | case FREAD: | |
593 | nread = ttnread(tp); | |
594 | if (nread > 0) | |
941944c9 | 595 | goto win; |
89b8a44c | 596 | if (tp->t_rsel && tp->t_rsel->p_wchan == (caddr_t)&selwait) |
941944c9 | 597 | tp->t_state |= TS_RCOLL; |
e1d74936 BJ |
598 | else |
599 | tp->t_rsel = u.u_procp; | |
941944c9 | 600 | break; |
e1d74936 | 601 | |
941944c9 BJ |
602 | case FWRITE: |
603 | if (tp->t_outq.c_cc <= TTLOWAT(tp)) | |
604 | goto win; | |
941944c9 BJ |
605 | if (tp->t_wsel && tp->t_wsel->p_wchan == (caddr_t)&selwait) |
606 | tp->t_state |= TS_WCOLL; | |
607 | else | |
608 | tp->t_wsel = u.u_procp; | |
609 | break; | |
e1d74936 | 610 | } |
941944c9 BJ |
611 | splx(s); |
612 | return (0); | |
613 | win: | |
614 | splx(s); | |
615 | return (1); | |
e1d74936 | 616 | } |
8bba2b8f | 617 | |
4147b3f6 BJ |
618 | #define OBUFSIZ 100 |
619 | ||
620 | /* | |
621 | * routine called on opens while tp->t_line == NTTYDISC | |
622 | * establishes a process group for distribution of | |
623 | * quits and interrupts from the tty. | |
624 | * (actually, pp->p_pgrp can't be 0 when this routine | |
625 | * is called since NTTYDISC is not the default discipline) | |
626 | */ | |
627 | ttyopen(dev, tp) | |
628 | dev_t dev; | |
629 | register struct tty *tp; | |
630 | { | |
631 | register struct proc *pp; | |
632 | ||
633 | pp = u.u_procp; | |
634 | tp->t_dev = dev; | |
635 | if(pp->p_pgrp == 0) { | |
636 | u.u_ttyp = tp; | |
637 | u.u_ttyd = dev; | |
638 | if (tp->t_pgrp == 0) | |
639 | tp->t_pgrp = pp->p_pid; | |
640 | pp->p_pgrp = tp->t_pgrp; | |
641 | } | |
642 | tp->t_state &= ~TS_WOPEN; | |
643 | tp->t_state |= TS_ISOPEN; | |
644 | if (tp->t_line != NTTYDISC) | |
645 | wflushtty(tp); | |
646 | } | |
647 | ||
648 | /* | |
649 | * clean tp on last close | |
650 | */ | |
651 | ttyclose(tp) | |
652 | register struct tty *tp; | |
653 | { | |
654 | ||
655 | if (tp->t_line) { | |
656 | wflushtty(tp); | |
657 | tp->t_line = 0; | |
658 | return; | |
659 | } | |
660 | tp->t_pgrp = 0; | |
661 | wflushtty(tp); | |
662 | tp->t_state = 0; | |
663 | } | |
664 | ||
665 | /* | |
666 | * reinput pending characters after state switch | |
667 | * call at spl5(). | |
668 | */ | |
669 | ttypend(tp) | |
670 | register struct tty *tp; | |
671 | { | |
672 | struct clist tq; | |
673 | register c; | |
674 | ||
675 | tp->t_local &= ~LPENDIN; | |
676 | tp->t_lstate |= LSTYPEN; | |
677 | tq = tp->t_rawq; | |
678 | tp->t_rawq.c_cc = 0; | |
679 | tp->t_rawq.c_cf = tp->t_rawq.c_cl = 0; | |
680 | while ((c = getc(&tq)) >= 0) | |
681 | ttyinput(c, tp); | |
682 | tp->t_lstate &= ~LSTYPEN; | |
683 | } | |
684 | ||
685 | /* | |
686 | * Place a character on raw TTY input queue, putting in delimiters | |
687 | * and waking up top half as needed. | |
688 | * Also echo if required. | |
689 | * The arguments are the character and the appropriate | |
690 | * tty structure. | |
691 | */ | |
692 | ttyinput(c, tp) | |
693 | register c; | |
694 | register struct tty *tp; | |
695 | { | |
696 | register int t_flags; | |
697 | int i; | |
698 | ||
699 | if (tp->t_local&LPENDIN) | |
700 | ttypend(tp); | |
701 | tk_nin++; | |
702 | c &= 0377; | |
703 | t_flags = tp->t_flags; | |
704 | if (t_flags&TANDEM) | |
705 | ttyblock(tp); | |
706 | if ((t_flags&RAW)==0) { | |
707 | if ((tp->t_lstate&LSTYPEN) == 0) | |
708 | c &= 0177; | |
709 | /* check for literal nexting very first */ | |
710 | if (tp->t_lstate&LSLNCH) { | |
711 | c |= 0200; | |
712 | tp->t_lstate &= ~LSLNCH; | |
713 | } | |
714 | if (tp->t_line == NTTYDISC && c==tlun.t_lnextc) { | |
715 | if (tp->t_flags&ECHO) | |
716 | ttyout("^\b", tp); | |
717 | tp->t_lstate |= LSLNCH; | |
718 | /* check for output control functions */ | |
719 | } else if (c==tun.t_stopc) { | |
720 | if ((tp->t_state&TS_TTSTOP)==0) { | |
721 | tp->t_state |= TS_TTSTOP; | |
722 | (*cdevsw[major(tp->t_dev)].d_stop)(tp, 0); | |
723 | return; | |
724 | } | |
725 | if (c!=tun.t_startc) | |
726 | return; | |
727 | } else if (c==tun.t_startc) { | |
728 | tp->t_state &= ~TS_TTSTOP; | |
729 | tp->t_local &= ~LFLUSHO; | |
730 | ttstart(tp); | |
731 | return; | |
732 | } else if (tp->t_line == NTTYDISC && c==tlun.t_flushc) { | |
733 | if (tp->t_local & LFLUSHO) | |
734 | tp->t_local &= ~LFLUSHO; | |
735 | else { | |
736 | flushtty(tp, FWRITE); | |
737 | ttyecho(c, tp); | |
738 | if (tp->t_rawq.c_cc+tp->t_canq.c_cc) | |
739 | ttyretype(tp); | |
740 | tp->t_local |= LFLUSHO; | |
741 | } | |
742 | ttstart(tp); | |
743 | return; | |
744 | } else if (c==tun.t_intrc || c==tun.t_quitc || | |
745 | (tp->t_line == NTTYDISC && c==tlun.t_suspc)) { | |
746 | if ((tp->t_local & LNOFLSH) == 0) | |
747 | flushtty(tp, | |
748 | c==tlun.t_suspc ? FREAD : FREAD|FWRITE); | |
749 | ttyecho(c, tp); | |
750 | c = c==tun.t_intrc ? SIGINT : | |
751 | ((c==tun.t_quitc) ? SIGQUIT : SIGTSTP); | |
752 | ttsignal(tp, c); | |
753 | /* check for buffer editing functions - cooked mode */ | |
754 | } else if ((t_flags&CBREAK) == 0) { | |
755 | if ((tp->t_lstate&LSQUOT) && | |
756 | (c==tp->t_erase||c==tp->t_kill)) { | |
757 | ttyrub(unputc(&tp->t_rawq), tp); | |
758 | c |= 0200; | |
759 | } | |
760 | if (c==tp->t_erase) { | |
761 | if (tp->t_rawq.c_cc) | |
762 | ttyrub(unputc(&tp->t_rawq), tp); | |
763 | } else if (c==tp->t_kill) { | |
764 | if (tp->t_local&LCRTKIL && | |
765 | tp->t_rawq.c_cc == tp->t_rocount) { | |
766 | while (tp->t_rawq.c_cc) | |
767 | ttyrub(unputc(&tp->t_rawq), tp); | |
768 | } else { | |
769 | ttyecho(c, tp); | |
770 | ttyecho('\n', tp); | |
771 | while (getc(&tp->t_rawq) > 0) | |
772 | ; | |
773 | tp->t_rocount = 0; | |
774 | } | |
775 | tp->t_lstate = 0; | |
776 | } else if (tp->t_line == NTTYDISC && c==tlun.t_werasc) { | |
777 | if (tp->t_rawq.c_cc == 0) | |
778 | goto out; | |
779 | do { | |
780 | c = unputc(&tp->t_rawq); | |
781 | if (c != ' ' && c != '\t') | |
782 | goto erasenb; | |
783 | ttyrub(c, tp); | |
784 | } while (tp->t_rawq.c_cc); | |
785 | goto out; | |
786 | erasenb: | |
787 | do { | |
788 | ttyrub(c, tp); | |
789 | if (tp->t_rawq.c_cc == 0) | |
790 | goto out; | |
791 | c = unputc(&tp->t_rawq); | |
792 | } while (c != ' ' && c != '\t'); | |
793 | (void) putc(c, &tp->t_rawq); | |
794 | } else if (tp->t_line == NTTYDISC && c==tlun.t_rprntc) { | |
795 | ttyretype(tp); | |
796 | /* check for cooked mode input buffer overflow */ | |
797 | } else if (tp->t_rawq.c_cc+tp->t_canq.c_cc >= TTYHOG) { | |
798 | ; | |
799 | /* put data char in q for user and wakeup if a break char */ | |
800 | } else if (putc(c, &tp->t_rawq) >= 0) { | |
801 | if (tp->t_rawq.c_cc+tp->t_canq.c_cc==TTYHOG | |
802 | && tp->t_line == NTTYDISC) | |
803 | (void) ttyoutput(CTRL(g), tp); | |
804 | if (!ttbreakc(c, tp)) { | |
805 | if (tp->t_rocount++ == 0) | |
806 | tp->t_rocol = tp->t_col; | |
807 | } else { | |
808 | tp->t_rocount = 0; | |
809 | catq(&tp->t_rawq, &tp->t_canq); | |
810 | /* IF (TP->T_CHAN) (VOID) SDATA(TP->T_CHAN); */ | |
811 | ttwakeup(tp); | |
812 | } | |
813 | tp->t_lstate &= ~LSQUOT; | |
814 | if (c == '\\') | |
815 | tp->t_lstate |= LSQUOT; | |
816 | if (tp->t_lstate&LSERASE) { | |
817 | tp->t_lstate &= ~LSERASE; | |
818 | (void) ttyoutput('/', tp); | |
819 | } | |
820 | i = tp->t_col; | |
821 | ttyecho(c, tp); | |
822 | if (c==tun.t_eofc && tp->t_flags&ECHO) { | |
823 | i = MIN(2, tp->t_col - i); | |
824 | while (i > 0) { | |
825 | (void) ttyoutput('\b', tp); | |
826 | i--; | |
827 | } | |
828 | } | |
829 | } | |
830 | /* CBREAK mode */ | |
831 | } else if (tp->t_rawq.c_cc > TTYHOG) { | |
832 | if (tp->t_outq.c_cc < TTHIWAT(tp) && | |
833 | tp->t_line == NTTYDISC) | |
834 | (void) ttyoutput(CTRL(g), tp); | |
835 | } else if (putc(c, &tp->t_rawq) >= 0) { | |
836 | ttwakeup(tp); | |
837 | ttyecho(c, tp); | |
838 | } | |
839 | /* RAW mode */ | |
840 | } else if (tp->t_rawq.c_cc > TTYHOG) | |
841 | flushtty(tp, FREAD|FWRITE); | |
842 | else { | |
843 | if (putc(c, &tp->t_rawq) >= 0) | |
844 | ttwakeup(tp); | |
845 | ttyecho(c, tp); | |
846 | } | |
847 | out: | |
848 | if (tp->t_local & LDECCTQ && tp->t_state & TS_TTSTOP && | |
849 | tun.t_startc != tun.t_stopc) | |
850 | return; | |
851 | tp->t_state &= ~TS_TTSTOP; | |
852 | tp->t_local &= ~LFLUSHO; | |
853 | ttstart(tp); | |
854 | } | |
855 | ||
856 | /* | |
857 | * put character on TTY output queue, adding delays, | |
858 | * expanding tabs, and handling the CR/NL bit. | |
859 | * It is called both from the top half for output, and from | |
860 | * interrupt level for echoing. | |
861 | * The arguments are the character and the tty structure. | |
862 | * Returns < 0 if putc succeeds, otherwise returns char to resend | |
863 | * Must be recursive. | |
864 | */ | |
865 | ttyoutput(c, tp) | |
866 | register c; | |
867 | register struct tty *tp; | |
868 | { | |
869 | register char *colp; | |
870 | register ctype; | |
871 | ||
872 | if (tp->t_flags&RAW || tp->t_local&LLITOUT) { | |
873 | if (tp->t_local&LFLUSHO) | |
874 | return (-1); | |
875 | if (putc(c, &tp->t_outq)) | |
876 | return(c); | |
877 | tk_nout++; | |
878 | return (-1); | |
879 | } | |
880 | /* | |
881 | * Ignore EOT in normal mode to avoid hanging up | |
882 | * certain terminals. | |
883 | */ | |
884 | c &= 0177; | |
885 | if (c==CEOT && (tp->t_flags&CBREAK)==0) | |
886 | return (-1); | |
887 | /* | |
888 | * Turn tabs to spaces as required | |
889 | */ | |
890 | if (c=='\t' && (tp->t_flags&TBDELAY)==XTABS) { | |
891 | register int s; | |
892 | ||
893 | c = 8 - (tp->t_col&7); | |
894 | if ((tp->t_local&LFLUSHO) == 0) { | |
895 | s = spl5(); /* don't interrupt tabs */ | |
896 | c -= b_to_q(" ", c, &tp->t_outq); | |
897 | tk_nout += c; | |
898 | splx(s); | |
899 | } | |
900 | tp->t_col += c; | |
901 | return (c ? -1 : '\t'); | |
902 | } | |
903 | tk_nout++; | |
904 | /* | |
905 | * for upper-case-only terminals, | |
906 | * generate escapes. | |
907 | */ | |
908 | if (tp->t_flags&LCASE) { | |
909 | colp = "({)}!|^~'`"; | |
910 | while(*colp++) | |
911 | if(c == *colp++) { | |
912 | if (ttyoutput('\\', tp) >= 0) | |
913 | return (c); | |
914 | c = colp[-2]; | |
915 | break; | |
916 | } | |
917 | if ('A'<=c && c<='Z') { | |
918 | if (ttyoutput('\\', tp) >= 0) | |
919 | return (c); | |
920 | } else if ('a'<=c && c<='z') | |
921 | c += 'A' - 'a'; | |
922 | } | |
923 | /* | |
924 | * turn <nl> to <cr><lf> if desired. | |
925 | */ | |
926 | if (c=='\n' && tp->t_flags&CRMOD) | |
927 | if (ttyoutput('\r', tp) >= 0) | |
928 | return (c); | |
929 | if (c=='~' && tp->t_local<ILDE) | |
930 | c = '`'; | |
931 | if ((tp->t_local&LFLUSHO) == 0 && putc(c, &tp->t_outq)) | |
932 | return (c); | |
933 | /* | |
934 | * Calculate delays. | |
935 | * The numbers here represent clock ticks | |
936 | * and are not necessarily optimal for all terminals. | |
937 | * The delays are indicated by characters above 0200. | |
938 | * In raw mode there are no delays and the | |
939 | * transmission path is 8 bits wide. | |
940 | */ | |
941 | colp = &tp->t_col; | |
942 | ctype = partab[c]; | |
943 | c = 0; | |
944 | switch (ctype&077) { | |
945 | ||
946 | case ORDINARY: | |
947 | (*colp)++; | |
948 | ||
949 | case CONTROL: | |
950 | break; | |
951 | ||
952 | case BACKSPACE: | |
953 | if (*colp) | |
954 | (*colp)--; | |
955 | break; | |
956 | ||
957 | case NEWLINE: | |
958 | ctype = (tp->t_flags >> 8) & 03; | |
959 | if(ctype == 1) { /* tty 37 */ | |
960 | if (*colp) | |
961 | c = max(((unsigned)*colp>>4) + 3, (unsigned)6); | |
962 | } else | |
963 | if(ctype == 2) { /* vt05 */ | |
964 | c = 6; | |
965 | } | |
966 | *colp = 0; | |
967 | break; | |
968 | ||
969 | case TAB: | |
970 | ctype = (tp->t_flags >> 10) & 03; | |
971 | if(ctype == 1) { /* tty 37 */ | |
972 | c = 1 - (*colp | ~07); | |
973 | if(c < 5) | |
974 | c = 0; | |
975 | } | |
976 | *colp |= 07; | |
977 | (*colp)++; | |
978 | break; | |
979 | ||
980 | case VTAB: | |
981 | if(tp->t_flags & VTDELAY) /* tty 37 */ | |
982 | c = 0177; | |
983 | break; | |
984 | ||
985 | case RETURN: | |
986 | ctype = (tp->t_flags >> 12) & 03; | |
987 | if(ctype == 1) { /* tn 300 */ | |
988 | c = 5; | |
989 | } else if(ctype == 2) { /* ti 700 */ | |
990 | c = 10; | |
991 | } else if(ctype == 3) { /* concept 100 */ | |
992 | int i; | |
993 | if ((i = *colp) >= 0) | |
994 | for (; i<9; i++) | |
995 | (void) putc(0177, &tp->t_outq); | |
996 | } | |
997 | *colp = 0; | |
998 | } | |
999 | if(c && (tp->t_local&LFLUSHO) == 0) | |
1000 | (void) putc(c|0200, &tp->t_outq); | |
1001 | return (-1); | |
1002 | } | |
1003 | ||
1004 | /* | |
1005 | * Called from device's read routine after it has | |
1006 | * calculated the tty-structure given as argument. | |
1007 | */ | |
1008 | ttread(tp) | |
1009 | register struct tty *tp; | |
1010 | { | |
1011 | register struct clist *qp; | |
1012 | register c, first; | |
1013 | ||
1014 | if ((tp->t_state&TS_CARR_ON)==0) | |
1015 | return(0); | |
1016 | loop: | |
1017 | (void) spl5(); | |
1018 | if (tp->t_local&LPENDIN) | |
1019 | ttypend(tp); | |
1020 | (void) spl0(); | |
1021 | while (tp == u.u_ttyp && u.u_procp->p_pgrp != tp->t_pgrp) { | |
1022 | if (u.u_signal[SIGTTIN] == SIG_IGN || | |
1023 | u.u_signal[SIGTTIN] == SIG_HOLD || | |
1024 | /* | |
1025 | (u.u_procp->p_flag&SDETACH) || | |
1026 | */ | |
1027 | u.u_procp->p_flag&SVFORK) | |
1028 | return (0); | |
1029 | gsignal(u.u_procp->p_pgrp, SIGTTIN); | |
1030 | sleep((caddr_t)&lbolt, TTIPRI); | |
1031 | } | |
1032 | if (tp->t_flags&RAW) { | |
1033 | (void) spl5(); | |
1034 | if (tp->t_rawq.c_cc <= 0) { | |
1035 | if ((tp->t_state&TS_CARR_ON)==0 || | |
1036 | (tp->t_state&TS_NBIO)) { | |
1037 | (void) spl0(); | |
1038 | return (0); | |
1039 | } | |
1040 | sleep((caddr_t)&tp->t_rawq, TTIPRI); | |
1041 | (void) spl0(); | |
1042 | goto loop; | |
1043 | } | |
1044 | (void) spl0(); | |
1045 | while (tp->t_rawq.c_cc && passc(getc(&tp->t_rawq))>=0) | |
1046 | ; | |
1047 | return (0); | |
1048 | } else { | |
1049 | qp = tp->t_flags & CBREAK ? &tp->t_rawq : &tp->t_canq; | |
1050 | (void) spl5(); | |
1051 | if (qp->c_cc <= 0) { | |
1052 | if ((tp->t_state&TS_CARR_ON)==0 || | |
1053 | (tp->t_state&TS_NBIO)) { | |
1054 | (void) spl0(); | |
1055 | return (0); | |
1056 | } | |
1057 | sleep((caddr_t)&tp->t_rawq, TTIPRI); | |
1058 | (void) spl0(); | |
1059 | goto loop; | |
1060 | } | |
1061 | (void) spl0(); | |
1062 | first = 1; | |
1063 | while ((c = getc(qp)) >= 0) { | |
1064 | if (tp->t_flags&CRMOD && c == '\r') | |
1065 | c = '\n'; | |
1066 | if (tp->t_flags&LCASE && c <= 0177) | |
1067 | if (tp->t_lstate&LSBKSL) { | |
1068 | if (maptab[c]) | |
1069 | c = maptab[c]; | |
1070 | tp->t_lstate &= ~LSBKSL; | |
1071 | } else if (c >= 'A' && c <= 'Z') | |
1072 | c += 'a' - 'A'; | |
1073 | else if (c == '\\') { | |
1074 | tp->t_lstate |= LSBKSL; | |
1075 | continue; | |
1076 | } | |
1077 | if (c == tlun.t_dsuspc) { | |
1078 | ttsignal(tp, SIGTSTP); | |
1079 | if (first) { | |
1080 | sleep((caddr_t)&lbolt, TTIPRI); | |
1081 | goto loop; | |
1082 | } | |
1083 | break; | |
1084 | } | |
1085 | if (c == tun.t_eofc && (tp->t_flags&CBREAK)==0) | |
1086 | break; | |
1087 | if (passc(c & 0177) < 0) | |
1088 | break; | |
1089 | if ((tp->t_flags&CBREAK)==0 && ttbreakc(c, tp)) | |
1090 | break; | |
1091 | first = 0; | |
1092 | } | |
1093 | tp->t_lstate &= ~LSBKSL; | |
1094 | } | |
1095 | ||
1096 | if (tp->t_state&TS_TBLOCK && tp->t_rawq.c_cc < TTYHOG/5) { | |
1097 | if (putc(tun.t_startc, &tp->t_outq)==0) { | |
1098 | tp->t_state &= ~TS_TBLOCK; | |
1099 | ttstart(tp); | |
1100 | } | |
1101 | tp->t_char = 0; | |
1102 | } | |
1103 | ||
1104 | return (tp->t_rawq.c_cc + tp->t_canq.c_cc); | |
1105 | } | |
1106 | ||
1107 | /* | |
1108 | * Called from the device's write routine after it has | |
1109 | * calculated the tty-structure given as argument. | |
1110 | */ | |
1111 | caddr_t | |
1112 | ttwrite(tp) | |
1113 | register struct tty *tp; | |
1114 | { | |
1115 | #ifdef vax | |
1116 | /* | |
1117 | * THE POSITIONING OF CP, CC, AND CE ARE CRITICAL | |
1118 | * AND MUST NOT BE CHANGED WITHOUT PATCHING | |
1119 | * THE 'ASM' INLINES BELOW. WATCH OUT. | |
1120 | */ | |
1121 | #endif | |
1122 | register char *cp; | |
1123 | register int cc, ce; | |
1124 | register i; | |
1125 | char obuf[OBUFSIZ]; | |
1126 | register c; | |
1127 | int hiwat = TTHIWAT(tp); | |
1128 | int cnt = u.u_count; | |
1129 | ||
1130 | if ((tp->t_state&TS_CARR_ON)==0) | |
1131 | return (NULL); | |
1132 | loop: | |
1133 | while (u.u_procp->p_pgrp != tp->t_pgrp && tp == u.u_ttyp && | |
1134 | (tp->t_local<OSTOP) && (u.u_procp->p_flag&SVFORK)==0 && | |
1135 | u.u_signal[SIGTTOU] != SIG_IGN && | |
1136 | u.u_signal[SIGTTOU] != SIG_HOLD | |
1137 | /* | |
1138 | && | |
1139 | (u.u_procp->p_flag&SDETACH)==0) { | |
1140 | */ | |
1141 | ) { | |
1142 | gsignal(u.u_procp->p_pgrp, SIGTTOU); | |
1143 | sleep((caddr_t)&lbolt, TTIPRI); | |
1144 | } | |
1145 | while (u.u_count) { | |
1146 | cc = MIN(u.u_count, OBUFSIZ); | |
1147 | cp = obuf; | |
1148 | iomove(cp, (unsigned)cc, B_WRITE); | |
1149 | if (u.u_error) | |
1150 | break; | |
1151 | if (tp->t_outq.c_cc > hiwat) | |
1152 | goto ovhiwat; | |
1153 | if (tp->t_local&LFLUSHO) | |
1154 | continue; | |
1155 | if (tp->t_flags&LCASE || tp->t_local<ILDE) { | |
1156 | while (cc) { | |
1157 | c = *cp++; | |
1158 | tp->t_rocount = 0; | |
1159 | while((c = ttyoutput(c, tp)) >= 0) { | |
1160 | /* out of clists, wait a bit */ | |
1161 | ttstart(tp); | |
1162 | sleep((caddr_t)&lbolt, TTOPRI); | |
1163 | tp->t_rocount = 0; | |
1164 | } | |
1165 | --cc; | |
1166 | if (tp->t_outq.c_cc > hiwat) | |
1167 | goto ovhiwat; | |
1168 | } | |
1169 | continue; | |
1170 | } | |
1171 | while (cc) { | |
1172 | if (tp->t_flags&RAW || tp->t_local&LLITOUT) | |
1173 | ce = cc; | |
1174 | else { | |
1175 | #ifdef vax | |
1176 | asm(" scanc r9,(r10),_partab,$077"); | |
1177 | asm(" subl3 r0,r9,r8"); | |
1178 | #else | |
1179 | ce=0; | |
1180 | while(((partab[*(unsigned char *)(cp+ce)]&077)==0)&&(ce<cc)) | |
1181 | ce++; | |
1182 | #endif | |
1183 | if (ce==0) { | |
1184 | tp->t_rocount = 0; | |
1185 | if (ttyoutput(*cp, tp) >= 0) { | |
1186 | ttstart(tp); | |
1187 | sleep((caddr_t)&lbolt, TTOPRI); | |
1188 | continue; | |
1189 | } | |
1190 | cp++; | |
1191 | cc--; | |
1192 | if (tp->t_outq.c_cc > hiwat) | |
1193 | goto ovhiwat; | |
1194 | } | |
1195 | } | |
1196 | tp->t_rocount = 0; | |
1197 | i=b_to_q(cp,ce,&tp->t_outq); | |
1198 | ce-=i; | |
1199 | tk_nout+=ce; | |
1200 | tp->t_col+=ce; | |
1201 | cp+=ce; | |
1202 | cc-=ce; | |
1203 | if (i) { | |
1204 | ttstart(tp); | |
1205 | sleep((caddr_t)&lbolt, TTOPRI); | |
1206 | } | |
1207 | if (ce || tp->t_outq.c_cc > hiwat) | |
1208 | goto ovhiwat; | |
1209 | } | |
1210 | } | |
1211 | ttstart(tp); | |
1212 | return(NULL); | |
1213 | ||
1214 | ovhiwat: | |
1215 | (void) spl5(); | |
1216 | u.u_base -= cc; | |
1217 | u.u_offset -= cc; | |
1218 | u.u_count += cc; | |
1219 | if (tp->t_outq.c_cc <= hiwat) { | |
1220 | (void) spl0(); | |
1221 | goto loop; | |
1222 | } | |
1223 | ttstart(tp); | |
1224 | if (tp->t_state & TS_NBIO) { | |
1225 | if (u.u_count == cnt) | |
1226 | u.u_error = EWOULDBLOCK; | |
1227 | return (NULL); | |
1228 | } | |
1229 | tp->t_state |= TS_ASLEEP; | |
1230 | sleep((caddr_t)&tp->t_outq, TTOPRI); | |
1231 | (void) spl0(); | |
1232 | goto loop; | |
1233 | } | |
1234 | ||
1235 | /* | |
1236 | * Rubout one character from the rawq of tp | |
1237 | * as cleanly as possible. | |
1238 | */ | |
1239 | ttyrub(c, tp) | |
1240 | register c; | |
1241 | register struct tty *tp; | |
1242 | { | |
1243 | register char *cp; | |
1244 | register int savecol; | |
1245 | int s; | |
1246 | char *nextc(); | |
1247 | ||
1248 | if ((tp->t_flags&ECHO)==0) | |
1249 | return; | |
1250 | tp->t_local &= ~LFLUSHO; | |
1251 | c &= 0377; | |
1252 | if (tp->t_local&LCRTBS) { | |
1253 | if (tp->t_rocount == 0) { | |
1254 | /* | |
1255 | * Screwed by ttwrite; retype | |
1256 | */ | |
1257 | ttyretype(tp); | |
1258 | return; | |
1259 | } | |
1260 | if (c==('\t'|0200) || c==('\n'|0200)) | |
1261 | ttyrubo(tp, 2); | |
1262 | else switch(partab[c&=0177] & 0177) { | |
1263 | ||
1264 | case ORDINARY: | |
1265 | if (tp->t_flags&LCASE && c >= 'A' && c <= 'Z') | |
1266 | ttyrubo(tp, 2); | |
1267 | else | |
1268 | ttyrubo(tp, 1); | |
1269 | break; | |
1270 | ||
1271 | case VTAB: | |
1272 | case BACKSPACE: | |
1273 | case CONTROL: | |
1274 | case RETURN: | |
1275 | if (tp->t_local & LCTLECH) | |
1276 | ttyrubo(tp, 2); | |
1277 | break; | |
1278 | ||
1279 | case TAB: | |
1280 | if (tp->t_rocount < tp->t_rawq.c_cc) { | |
1281 | ttyretype(tp); | |
1282 | return; | |
1283 | } | |
1284 | s = spl5(); | |
1285 | savecol = tp->t_col; | |
1286 | tp->t_lstate |= LSCNTTB; | |
1287 | tp->t_local |= LFLUSHO; | |
1288 | tp->t_col = tp->t_rocol; | |
1289 | for (cp = tp->t_rawq.c_cf; cp; cp = nextc(&tp->t_rawq, cp)) | |
1290 | ttyecho(*cp, tp); | |
1291 | tp->t_local &= ~LFLUSHO; | |
1292 | tp->t_lstate &= ~LSCNTTB; | |
1293 | splx(s); | |
1294 | /* | |
1295 | * savecol will now be length of the tab | |
1296 | */ | |
1297 | savecol -= tp->t_col; | |
1298 | tp->t_col += savecol; | |
1299 | if (savecol > 8) | |
1300 | savecol = 8; /* overflow screw */ | |
1301 | while (--savecol >= 0) | |
1302 | (void) ttyoutput('\b', tp); | |
1303 | break; | |
1304 | ||
1305 | default: | |
1306 | panic("ttyrub"); | |
1307 | } | |
1308 | } else if (tp->t_local&LPRTERA) { | |
1309 | if ((tp->t_lstate&LSERASE) == 0) { | |
1310 | (void) ttyoutput('\\', tp); | |
1311 | tp->t_lstate |= LSERASE; | |
1312 | } | |
1313 | ttyecho(c, tp); | |
1314 | } else | |
1315 | ttyecho(tp->t_erase, tp); | |
1316 | tp->t_rocount--; | |
1317 | } | |
1318 | ||
1319 | /* | |
1320 | * Crt back over cnt chars perhaps | |
1321 | * erasing them. | |
1322 | */ | |
1323 | ttyrubo(tp, cnt) | |
1324 | register struct tty *tp; | |
1325 | int cnt; | |
1326 | { | |
1327 | ||
1328 | while (--cnt >= 0) | |
1329 | ttyout(tp->t_local&LCRTERA ? "\b \b" : "\b", tp); | |
1330 | } | |
1331 | ||
1332 | /* | |
1333 | * Reprint the rawq line. | |
1334 | * We assume c_cc has already been checked. | |
1335 | */ | |
1336 | ttyretype(tp) | |
1337 | register struct tty *tp; | |
1338 | { | |
1339 | register char *cp; | |
1340 | char *nextc(); | |
1341 | int s; | |
1342 | ||
1343 | if (tlun.t_rprntc != 0377) | |
1344 | ttyecho(tlun.t_rprntc, tp); | |
1345 | (void) ttyoutput('\n', tp); | |
1346 | s = spl5(); | |
1347 | for (cp = tp->t_canq.c_cf; cp; cp = nextc(&tp->t_canq, cp)) | |
1348 | ttyecho(*cp, tp); | |
1349 | for (cp = tp->t_rawq.c_cf; cp; cp = nextc(&tp->t_rawq, cp)) | |
1350 | ttyecho(*cp, tp); | |
1351 | tp->t_lstate &= ~LSERASE; | |
1352 | splx(s); | |
1353 | tp->t_rocount = tp->t_rawq.c_cc; | |
1354 | tp->t_rocol = 0; | |
1355 | } | |
1356 | ||
1357 | /* | |
1358 | * Echo a typed character to the terminal | |
1359 | */ | |
1360 | ttyecho(c, tp) | |
1361 | register c; | |
1362 | register struct tty *tp; | |
1363 | { | |
1364 | ||
1365 | if ((tp->t_lstate & LSCNTTB) == 0) | |
1366 | tp->t_local &= ~LFLUSHO; | |
1367 | if ((tp->t_flags&ECHO) == 0) | |
1368 | return; | |
1369 | c &= 0377; | |
1370 | if (tp->t_flags&RAW) { | |
1371 | (void) ttyoutput(c, tp); | |
1372 | return; | |
1373 | } | |
1374 | if (c == '\r' && tp->t_flags&CRMOD) | |
1375 | c = '\n'; | |
1376 | if (tp->t_local&LCTLECH) { | |
1377 | if ((c&0177) <= 037 && c!='\t' && c!='\n' || (c&0177)==0177) { | |
1378 | (void) ttyoutput('^', tp); | |
1379 | c &= 0177; | |
1380 | if (c == 0177) | |
1381 | c = '?'; | |
1382 | else if (tp->t_flags&LCASE) | |
1383 | c += 'a' - 1; | |
1384 | else | |
1385 | c += 'A' - 1; | |
1386 | } | |
1387 | } | |
1388 | if ((tp->t_flags&LCASE) && (c >= 'A' && c <= 'Z')) | |
1389 | c += 'a' - 'A'; | |
1390 | (void) ttyoutput(c & 0177, tp); | |
1391 | } | |
1392 | ||
1393 | /* | |
1394 | * Is c a break char for tp? | |
1395 | */ | |
1396 | ttbreakc(c, tp) | |
1397 | register c; | |
1398 | register struct tty *tp; | |
1399 | { | |
1400 | return (c == '\n' || c == tun.t_eofc || c == tun.t_brkc || | |
1401 | c == '\r' && (tp->t_flags&CRMOD)); | |
1402 | } | |
1403 | ||
1404 | /* | |
1405 | * send string cp to tp | |
1406 | */ | |
1407 | ttyout(cp, tp) | |
1408 | register char *cp; | |
1409 | register struct tty *tp; | |
1410 | { | |
1411 | register char c; | |
1412 | ||
1413 | while (c = *cp++) | |
1414 | (void) ttyoutput(c, tp); | |
1415 | } | |
1416 | ||
1417 | ttwakeup(tp) | |
1418 | struct tty *tp; | |
1419 | { | |
1420 | ||
1421 | if (tp->t_rsel) { | |
1422 | selwakeup(tp->t_rsel, tp->t_state&TS_RCOLL); | |
1423 | tp->t_state &= ~TS_RCOLL; | |
1424 | tp->t_rsel = 0; | |
1425 | } | |
1426 | wakeup((caddr_t)&tp->t_rawq); | |
1427 | } | |
1428 | ||
1429 | ttsignal(tp, signo) | |
1430 | struct tty *tp; | |
1431 | int signo; | |
1432 | { | |
1433 | ||
1434 | gsignal(tp->t_pgrp, signo); | |
1435 | } |