Commit | Line | Data |
---|---|---|
da7c5cc6 | 1 | /* |
0880b18e | 2 | * Copyright (c) 1982, 1986 Regents of the University of California. |
da7c5cc6 KM |
3 | * All rights reserved. The Berkeley software License Agreement |
4 | * specifies the terms and conditions for redistribution. | |
5 | * | |
3f36033f | 6 | * @(#)tty.c 7.12 (Berkeley) %G% |
da7c5cc6 | 7 | */ |
961945a8 SL |
8 | |
9 | #include "../machine/reg.h" | |
89dc6dfb | 10 | |
94368568 JB |
11 | #include "param.h" |
12 | #include "systm.h" | |
13 | #include "dir.h" | |
14 | #include "user.h" | |
15 | #include "ioctl.h" | |
16 | #include "tty.h" | |
2c6a4e11 MT |
17 | #define TTYDEFCHARS |
18 | #include "ttydefaults.h" | |
19 | #undef TTYDEFCHARS | |
20 | #include "termios.h" | |
94368568 | 21 | #include "proc.h" |
94368568 JB |
22 | #include "file.h" |
23 | #include "conf.h" | |
fb1db32c | 24 | #include "dkstat.h" |
94368568 JB |
25 | #include "uio.h" |
26 | #include "kernel.h" | |
2c6a4e11 | 27 | #include "syslog.h" |
89dc6dfb | 28 | |
8bba2b8f RE |
29 | /* |
30 | * Table giving parity for characters and indicating | |
31 | * character classes to tty driver. In particular, | |
32 | * if the low 6 bits are 0, then the character needs | |
33 | * no special processing on output. | |
34 | */ | |
35 | ||
36 | char partab[] = { | |
37 | 0001,0201,0201,0001,0201,0001,0001,0201, | |
38 | 0202,0004,0003,0201,0005,0206,0201,0001, | |
39 | 0201,0001,0001,0201,0001,0201,0201,0001, | |
40 | 0001,0201,0201,0001,0201,0001,0001,0201, | |
41 | 0200,0000,0000,0200,0000,0200,0200,0000, | |
42 | 0000,0200,0200,0000,0200,0000,0000,0200, | |
43 | 0000,0200,0200,0000,0200,0000,0000,0200, | |
44 | 0200,0000,0000,0200,0000,0200,0200,0000, | |
45 | 0200,0000,0000,0200,0000,0200,0200,0000, | |
46 | 0000,0200,0200,0000,0200,0000,0000,0200, | |
47 | 0000,0200,0200,0000,0200,0000,0000,0200, | |
48 | 0200,0000,0000,0200,0000,0200,0200,0000, | |
49 | 0000,0200,0200,0000,0200,0000,0000,0200, | |
50 | 0200,0000,0000,0200,0000,0200,0200,0000, | |
51 | 0200,0000,0000,0200,0000,0200,0200,0000, | |
52 | 0000,0200,0200,0000,0200,0000,0000,0201, | |
53 | ||
54 | /* | |
55 | * 7 bit ascii ends with the last character above, | |
56 | * but we contine through all 256 codes for the sake | |
57 | * of the tty output routines which use special vax | |
58 | * instructions which need a 256 character trt table. | |
59 | */ | |
60 | ||
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 | 0007,0007,0007,0007,0007,0007,0007,0007, | |
68 | 0007,0007,0007,0007,0007,0007,0007,0007, | |
69 | 0007,0007,0007,0007,0007,0007,0007,0007, | |
70 | 0007,0007,0007,0007,0007,0007,0007,0007, | |
71 | 0007,0007,0007,0007,0007,0007,0007,0007, | |
72 | 0007,0007,0007,0007,0007,0007,0007,0007, | |
73 | 0007,0007,0007,0007,0007,0007,0007,0007, | |
74 | 0007,0007,0007,0007,0007,0007,0007,0007, | |
75 | 0007,0007,0007,0007,0007,0007,0007,0007, | |
76 | 0007,0007,0007,0007,0007,0007,0007,0007 | |
77 | }; | |
89dc6dfb | 78 | |
89dc6dfb BJ |
79 | /* |
80 | * Input mapping table-- if an entry is non-zero, when the | |
81 | * corresponding character is typed preceded by "\" the escape | |
82 | * sequence is replaced by the table value. Mostly used for | |
83 | * upper-case only terminals. | |
84 | */ | |
89dc6dfb BJ |
85 | char maptab[] ={ |
86 | 000,000,000,000,000,000,000,000, | |
87 | 000,000,000,000,000,000,000,000, | |
88 | 000,000,000,000,000,000,000,000, | |
89 | 000,000,000,000,000,000,000,000, | |
90 | 000,'|',000,000,000,000,000,'`', | |
91 | '{','}',000,000,000,000,000,000, | |
92 | 000,000,000,000,000,000,000,000, | |
93 | 000,000,000,000,000,000,000,000, | |
94 | 000,000,000,000,000,000,000,000, | |
95 | 000,000,000,000,000,000,000,000, | |
96 | 000,000,000,000,000,000,000,000, | |
97 | 000,000,000,000,000,000,'~',000, | |
98 | 000,'A','B','C','D','E','F','G', | |
99 | 'H','I','J','K','L','M','N','O', | |
100 | 'P','Q','R','S','T','U','V','W', | |
101 | 'X','Y','Z',000,000,000,000,000, | |
102 | }; | |
103 | ||
0d65848d | 104 | short tthiwat[16] = |
6f21eede | 105 | { 100,100,100,100,100,100,100,200,200,400,400,400,650,650,1300,2000 }; |
0d65848d BJ |
106 | short ttlowat[16] = |
107 | { 30, 30, 30, 30, 30, 30, 30, 50, 50,120,120,120,125,125,125,125 }; | |
108 | ||
adf4bc89 | 109 | extern struct tty *constty; /* temporary virtual console */ |
2c6a4e11 MT |
110 | extern char partab[], maptab[]; |
111 | ||
112 | /* | |
113 | * Debugging aids | |
114 | */ | |
115 | #define dprintf if (tp->t_trace & TTRACE_IO)printf | |
116 | ||
117 | /* | |
118 | * Is 'c' a line delimiter ("break" character)? | |
119 | */ | |
120 | #define ttbreakc(c) (c == '\n' || CCEQ(cc[VEOF], c) || \ | |
121 | CCEQ(cc[VEOL], c) || CCEQ(cc[VEOL2], c)) | |
adf4bc89 | 122 | |
89dc6dfb | 123 | ttychars(tp) |
becb115c | 124 | struct tty *tp; |
89dc6dfb | 125 | { |
2c6a4e11 | 126 | bcopy(ttydefchars, tp->t_cc, sizeof(ttydefchars)); |
89dc6dfb BJ |
127 | } |
128 | ||
129 | /* | |
2c6a4e11 | 130 | * |
50e2732b | 131 | * Wait for output to drain, then flush input waiting. |
89dc6dfb | 132 | */ |
88a7a62a | 133 | ttywflush(tp) |
941944c9 | 134 | register struct tty *tp; |
89dc6dfb BJ |
135 | { |
136 | ||
88a7a62a SL |
137 | ttywait(tp); |
138 | ttyflush(tp, FREAD); | |
139 | } | |
140 | ||
2c6a4e11 MT |
141 | /* |
142 | * Wait for output to drain. | |
143 | */ | |
88a7a62a SL |
144 | ttywait(tp) |
145 | register struct tty *tp; | |
146 | { | |
4f3a716e | 147 | register int s = spltty(); |
88a7a62a | 148 | |
5de287d9 | 149 | while ((tp->t_outq.c_cc || tp->t_state&TS_BUSY) && |
9670d122 | 150 | tp->t_state&TS_CARR_ON && tp->t_oproc) { |
50e2732b | 151 | (*tp->t_oproc)(tp); |
941944c9 | 152 | tp->t_state |= TS_ASLEEP; |
50e2732b BJ |
153 | sleep((caddr_t)&tp->t_outq, TTOPRI); |
154 | } | |
875a1e2c | 155 | splx(s); |
89dc6dfb BJ |
156 | } |
157 | ||
158 | /* | |
becb115c | 159 | * Flush all TTY queues |
89dc6dfb | 160 | */ |
88a7a62a | 161 | ttyflush(tp, rw) |
4b72e2f9 | 162 | register struct tty *tp; |
89dc6dfb | 163 | { |
50e2732b BJ |
164 | register s; |
165 | ||
4f3a716e | 166 | s = spltty(); |
50e2732b BJ |
167 | if (rw & FREAD) { |
168 | while (getc(&tp->t_canq) >= 0) | |
169 | ; | |
170 | wakeup((caddr_t)&tp->t_rawq); | |
171 | } | |
172 | if (rw & FWRITE) { | |
173 | wakeup((caddr_t)&tp->t_outq); | |
941944c9 | 174 | tp->t_state &= ~TS_TTSTOP; |
39697bd8 | 175 | (*cdevsw[major(tp->t_dev)].d_stop)(tp, rw); |
50e2732b BJ |
176 | while (getc(&tp->t_outq) >= 0) |
177 | ; | |
178 | } | |
179 | if (rw & FREAD) { | |
180 | while (getc(&tp->t_rawq) >= 0) | |
181 | ; | |
becb115c | 182 | tp->t_rocount = 0; |
50e2732b | 183 | tp->t_rocol = 0; |
becb115c | 184 | tp->t_state &= ~TS_LOCAL; |
50e2732b BJ |
185 | } |
186 | splx(s); | |
89dc6dfb BJ |
187 | } |
188 | ||
50e2732b BJ |
189 | /* |
190 | * Send stop character on input overflow. | |
191 | */ | |
192 | ttyblock(tp) | |
4b72e2f9 | 193 | register struct tty *tp; |
89dc6dfb | 194 | { |
50e2732b | 195 | register x; |
becb115c | 196 | |
50e2732b BJ |
197 | x = tp->t_rawq.c_cc + tp->t_canq.c_cc; |
198 | if (tp->t_rawq.c_cc > TTYHOG) { | |
88a7a62a | 199 | ttyflush(tp, FREAD|FWRITE); |
941944c9 | 200 | tp->t_state &= ~TS_TBLOCK; |
50e2732b | 201 | } |
600d5712 MK |
202 | /* |
203 | * Block further input iff: | |
204 | * Current input > threshold AND input is available to user program | |
205 | */ | |
28b2d854 | 206 | if (x >= TTYHOG/2 && |
2c6a4e11 MT |
207 | (!(tp->t_lflag&ICANON)) || (tp->t_canq.c_cc > 0) && |
208 | tp->t_cc[VSTOP] != POSIX_V_DISABLE) { | |
209 | if (putc(tp->t_cc[VSTOP], &tp->t_outq)==0) { | |
600d5712 MK |
210 | tp->t_state |= TS_TBLOCK; |
211 | ttstart(tp); | |
212 | } | |
50e2732b | 213 | } |
89dc6dfb BJ |
214 | } |
215 | ||
101ba270 | 216 | /* |
50e2732b BJ |
217 | * Restart typewriter output following a delay |
218 | * timeout. | |
219 | * The name of the routine is passed to the timeout | |
220 | * subroutine and it is called during a clock interrupt. | |
101ba270 | 221 | */ |
50e2732b | 222 | ttrstrt(tp) |
4b72e2f9 | 223 | register struct tty *tp; |
101ba270 BJ |
224 | { |
225 | ||
becb115c SL |
226 | if (tp == 0) |
227 | panic("ttrstrt"); | |
941944c9 | 228 | tp->t_state &= ~TS_TIMEOUT; |
50e2732b | 229 | ttstart(tp); |
101ba270 BJ |
230 | } |
231 | ||
89dc6dfb | 232 | /* |
50e2732b BJ |
233 | * Start output on the typewriter. It is used from the top half |
234 | * after some characters have been put on the output queue, | |
235 | * from the interrupt routine to transmit the next | |
236 | * character, and after a timeout has finished. | |
89dc6dfb | 237 | */ |
50e2732b | 238 | ttstart(tp) |
4b72e2f9 | 239 | register struct tty *tp; |
89dc6dfb | 240 | { |
8062c8a7 | 241 | |
b482b2c8 | 242 | if (tp->t_oproc) /* kludge for pty */ |
50e2732b | 243 | (*tp->t_oproc)(tp); |
89dc6dfb BJ |
244 | } |
245 | ||
246 | /* | |
50e2732b | 247 | * Common code for tty ioctls. |
89dc6dfb | 248 | */ |
49c84d3f | 249 | /*ARGSUSED*/ |
4b72e2f9 SL |
250 | ttioctl(tp, com, data, flag) |
251 | register struct tty *tp; | |
252 | caddr_t data; | |
89dc6dfb | 253 | { |
89dc6dfb | 254 | extern int nldisp; |
2c6a4e11 | 255 | int soft; |
fc6972ae | 256 | int s; |
89dc6dfb | 257 | |
adf4bc89 | 258 | |
50e2732b BJ |
259 | /* |
260 | * If the ioctl involves modification, | |
4f3a716e | 261 | * hang if in the background. |
50e2732b | 262 | */ |
4b72e2f9 | 263 | switch (com) { |
50e2732b | 264 | |
2c6a4e11 | 265 | case TIOCSETD: |
50e2732b | 266 | case TIOCFLUSH: |
50e2732b | 267 | case TIOCSPGRP: |
8203fe05 | 268 | case TIOCSTI: |
f9eea644 | 269 | case TIOCSWINSZ: |
2c6a4e11 MT |
270 | case TIOCSETA: |
271 | case TIOCSETAW: | |
272 | case TIOCSETAF: | |
273 | case TIOCSETAS: | |
274 | case TIOCSETAWS: | |
275 | case TIOCSETAFS: | |
276 | while (tp->t_line == POSXDISC && | |
50e2732b BJ |
277 | u.u_procp->p_pgrp != tp->t_pgrp && tp == u.u_ttyp && |
278 | (u.u_procp->p_flag&SVFORK) == 0 && | |
52c041cd MK |
279 | !(u.u_procp->p_sigignore & sigmask(SIGTTOU)) && |
280 | !(u.u_procp->p_sigmask & sigmask(SIGTTOU))) { | |
50e2732b BJ |
281 | gsignal(u.u_procp->p_pgrp, SIGTTOU); |
282 | sleep((caddr_t)&lbolt, TTOPRI); | |
283 | } | |
284 | break; | |
285 | } | |
286 | ||
becb115c SL |
287 | /* |
288 | * Process the ioctl. | |
289 | */ | |
4b72e2f9 | 290 | switch (com) { |
89dc6dfb | 291 | |
fc6972ae | 292 | /* get discipline number */ |
89dc6dfb | 293 | case TIOCGETD: |
4b72e2f9 | 294 | *(int *)data = tp->t_line; |
89dc6dfb BJ |
295 | break; |
296 | ||
fc6972ae | 297 | /* set line discipline */ |
4b72e2f9 SL |
298 | case TIOCSETD: { |
299 | register int t = *(int *)data; | |
2c6a4e11 | 300 | dev_t dev = tp->t_dev; |
becb115c | 301 | int error = 0; |
4b72e2f9 | 302 | |
9b905352 | 303 | if ((unsigned) t >= nldisp) |
4a003df3 | 304 | return (ENXIO); |
2eaeef4d MK |
305 | if (t != tp->t_line) { |
306 | s = spltty(); | |
307 | (*linesw[tp->t_line].l_close)(tp); | |
308 | error = (*linesw[t].l_open)(dev, tp); | |
309 | if (error) { | |
2c6a4e11 | 310 | (void)(*linesw[tp->t_line].l_open)(dev, tp); |
2eaeef4d MK |
311 | splx(s); |
312 | return (error); | |
313 | } | |
314 | tp->t_line = t; | |
4a003df3 | 315 | splx(s); |
4a003df3 | 316 | } |
2c6a4e11 MT |
317 | if (tp->t_trace & TTRACE_STATE) |
318 | ttytrace(com, tp); | |
89dc6dfb | 319 | break; |
4b72e2f9 | 320 | } |
89dc6dfb | 321 | |
fc6972ae | 322 | /* prevent more opens on channel */ |
152c2598 BJ |
323 | case TIOCEXCL: |
324 | tp->t_state |= TS_XCLUDE; | |
325 | break; | |
326 | ||
327 | case TIOCNXCL: | |
328 | tp->t_state &= ~TS_XCLUDE; | |
329 | break; | |
330 | ||
89dc6dfb | 331 | case TIOCHPCL: |
2c6a4e11 | 332 | tp->t_cflag |= HUPCL; |
89dc6dfb BJ |
333 | break; |
334 | ||
7d973a4d | 335 | case TIOCFLUSH: { |
4b72e2f9 SL |
336 | register int flags = *(int *)data; |
337 | ||
338 | if (flags == 0) | |
7d973a4d | 339 | flags = FREAD|FWRITE; |
4b72e2f9 SL |
340 | else |
341 | flags &= FREAD|FWRITE; | |
88a7a62a | 342 | ttyflush(tp, flags); |
89dc6dfb | 343 | break; |
4568c08e | 344 | } |
89dc6dfb | 345 | |
fc6972ae | 346 | /* return number of characters immediately available */ |
4b72e2f9 SL |
347 | case FIONREAD: |
348 | *(off_t *)data = ttnread(tp); | |
8062c8a7 | 349 | break; |
8062c8a7 | 350 | |
b968e450 SL |
351 | case TIOCOUTQ: |
352 | *(int *)data = tp->t_outq.c_cc; | |
353 | break; | |
354 | ||
a8d3bf7f | 355 | case TIOCSTOP: |
4f3a716e | 356 | s = spltty(); |
becb115c | 357 | if ((tp->t_state&TS_TTSTOP) == 0) { |
bfcf09ee BJ |
358 | tp->t_state |= TS_TTSTOP; |
359 | (*cdevsw[major(tp->t_dev)].d_stop)(tp, 0); | |
360 | } | |
4b72e2f9 | 361 | splx(s); |
bfcf09ee BJ |
362 | break; |
363 | ||
a8d3bf7f | 364 | case TIOCSTART: |
4f3a716e | 365 | s = spltty(); |
2c6a4e11 | 366 | if ((tp->t_state&TS_TTSTOP) || (tp->t_lflag&FLUSHO)) { |
bfcf09ee | 367 | tp->t_state &= ~TS_TTSTOP; |
2c6a4e11 | 368 | tp->t_lflag &= ~FLUSHO; |
bfcf09ee BJ |
369 | ttstart(tp); |
370 | } | |
4b72e2f9 | 371 | splx(s); |
bfcf09ee BJ |
372 | break; |
373 | ||
8203fe05 SL |
374 | /* |
375 | * Simulate typing of a character at the terminal. | |
376 | */ | |
377 | case TIOCSTI: | |
477d62ec KM |
378 | if (u.u_uid && (flag & FREAD) == 0) |
379 | return (EPERM); | |
8203fe05 SL |
380 | if (u.u_uid && u.u_ttyp != tp) |
381 | return (EACCES); | |
becb115c | 382 | (*linesw[tp->t_line].l_rint)(*(char *)data, tp); |
8203fe05 SL |
383 | break; |
384 | ||
2c6a4e11 MT |
385 | case TIOCGETA: { |
386 | struct termios *t = (struct termios *)data; | |
387 | bcopy(&tp->t_termio, t, sizeof(struct termios)); | |
388 | if (tp->t_trace & TTRACE_STATE) | |
389 | ttytrace(com, tp); | |
390 | break; | |
391 | } | |
392 | ||
393 | case TIOCSETAS: | |
394 | case TIOCSETAWS: | |
395 | case TIOCSETAFS: | |
396 | soft = 1; | |
397 | goto set; | |
398 | case TIOCSETA: | |
399 | case TIOCSETAW: | |
400 | case TIOCSETAF: | |
401 | soft = 0; | |
402 | set: | |
403 | { | |
404 | register struct termios *t = (struct termios *)data; | |
405 | ||
4f3a716e | 406 | s = spltty(); |
2c6a4e11 MT |
407 | if (com == TIOCSETAF || com == TIOCSETAFS) |
408 | ttywflush(tp); | |
409 | else { | |
410 | if (com == TIOCSETAW || com == TIOCSETAWS) | |
411 | ttywait(tp); | |
412 | if ((t->c_lflag&ICANON) != (tp->t_lflag&ICANON)) | |
413 | if (t->c_lflag&ICANON) { | |
414 | tp->t_lflag |= PENDIN; | |
415 | ttwakeup(tp); | |
416 | } | |
417 | else { | |
418 | struct clist tq; | |
419 | ||
420 | catq(&tp->t_rawq, &tp->t_canq); | |
421 | tq = tp->t_rawq; | |
422 | tp->t_rawq = tp->t_canq; | |
423 | tp->t_canq = tq; | |
424 | } | |
88a7a62a | 425 | } |
2c6a4e11 MT |
426 | tp->t_iflag = t->c_iflag; |
427 | tp->t_oflag = t->c_oflag; | |
428 | tp->t_lflag = t->c_lflag; | |
429 | bcopy(t->c_cc, tp->t_cc, sizeof(t->c_cc)); | |
430 | if (!soft) { | |
431 | tp->t_cflag = t->c_cflag; | |
432 | tp->t_ispeed = t->c_ispeed; | |
433 | tp->t_ospeed = t->c_ospeed; | |
88a7a62a SL |
434 | } |
435 | splx(s); | |
2c6a4e11 MT |
436 | if (tp->t_trace & TTRACE_STATE) |
437 | ttytrace(com, tp); | |
88a7a62a SL |
438 | break; |
439 | } | |
440 | ||
2c6a4e11 MT |
441 | case TIOCTRACE: |
442 | tp->t_trace = *(int *)data; | |
88a7a62a | 443 | break; |
88a7a62a SL |
444 | |
445 | case FIONBIO: | |
446 | if (*(int *)data) | |
447 | tp->t_state |= TS_NBIO; | |
448 | else | |
449 | tp->t_state &= ~TS_NBIO; | |
450 | break; | |
451 | ||
452 | case FIOASYNC: | |
453 | if (*(int *)data) | |
454 | tp->t_state |= TS_ASYNC; | |
455 | else | |
456 | tp->t_state &= ~TS_ASYNC; | |
457 | break; | |
458 | ||
88a7a62a | 459 | |
4f3a716e | 460 | /* |
cd69487e | 461 | * Allow SPGRP only if tty is open for reading. |
f9eea644 JB |
462 | * Quick check: if we can find a process in the new pgrp, |
463 | * this user must own that process. | |
464 | * SHOULD VERIFY THAT PGRP IS IN USE AND IS THIS USER'S. | |
4f3a716e | 465 | */ |
245aeefa | 466 | case TIOCSPGRP: { |
4f3a716e MK |
467 | struct proc *p; |
468 | int pgrp = *(int *)data; | |
469 | ||
470 | if (u.u_uid && (flag & FREAD) == 0) | |
471 | return (EPERM); | |
f9eea644 JB |
472 | p = pfind(pgrp); |
473 | if (p && p->p_pgrp == pgrp && | |
474 | p->p_uid != u.u_uid && u.u_uid && !inferior(p)) | |
475 | return (EPERM); | |
4f3a716e | 476 | tp->t_pgrp = pgrp; |
88a7a62a | 477 | break; |
245aeefa | 478 | } |
88a7a62a SL |
479 | |
480 | case TIOCGPGRP: | |
481 | *(int *)data = tp->t_pgrp; | |
482 | break; | |
483 | ||
f9eea644 | 484 | case TIOCSWINSZ: |
245aeefa JB |
485 | if (bcmp((caddr_t)&tp->t_winsize, data, |
486 | sizeof (struct winsize))) { | |
f9eea644 JB |
487 | tp->t_winsize = *(struct winsize *)data; |
488 | gsignal(tp->t_pgrp, SIGWINCH); | |
489 | } | |
490 | break; | |
491 | ||
492 | case TIOCGWINSZ: | |
493 | *(struct winsize *)data = tp->t_winsize; | |
494 | break; | |
495 | ||
adf4bc89 MK |
496 | case TIOCCONS: |
497 | if (*(int *)data) { | |
498 | if (constty != NULL) | |
499 | return (EBUSY); | |
500 | #ifndef UCONSOLE | |
501 | if (!suser()) | |
502 | return (EPERM); | |
503 | #endif | |
504 | constty = tp; | |
505 | } else if (tp == constty) | |
1eebc1a7 | 506 | constty = NULL; |
adf4bc89 MK |
507 | break; |
508 | ||
2c6a4e11 MT |
509 | /* allow old ioctls for now */ |
510 | case TIOCGETP: | |
511 | case TIOCSETP: | |
512 | case TIOCSETN: | |
513 | case TIOCGETC: | |
514 | case TIOCSETC: | |
515 | case TIOCSLTC: | |
516 | case TIOCGLTC: | |
517 | case TIOCLBIS: | |
518 | case TIOCLBIC: | |
519 | case TIOCLSET: | |
520 | case TIOCLGET: | |
521 | return(ottioctl(tp, com, data, flag)); | |
522 | ||
89dc6dfb | 523 | default: |
fc6972ae | 524 | return (-1); |
89dc6dfb | 525 | } |
fc6972ae | 526 | return (0); |
89dc6dfb | 527 | } |
e1d74936 | 528 | |
2c6a4e11 MT |
529 | /* |
530 | * DEBUG - to be removed | |
531 | */ | |
532 | ttytrace(ioc, tp) | |
533 | struct tty *tp; | |
534 | { | |
535 | register u_char *cc = tp->t_cc; | |
536 | char comm[MAXCOMLEN+1]; | |
537 | static int seq = 0; | |
538 | ||
539 | bcopy(u.u_comm, comm, MAXCOMLEN+1); | |
540 | comm[MAXCOMLEN] = '\0'; | |
541 | ||
542 | /* trace changes to line disciplines */ | |
543 | if (ioc == TIOCSETD) { | |
544 | log(LOG_LOCAL4|LOG_DEBUG, "%s:%x:%x:%x:%x\n", | |
545 | comm, ioc, u.u_procp->p_pid, tp->t_dev, tp->t_line); | |
546 | return; | |
547 | } | |
548 | ||
549 | /* | |
550 | * format for the trace record is: | |
551 | * | |
552 | * u_comm:ioctl:pid:dev_t:ldisc:iflag:oflag:lflag:cflag:ispeed: | |
553 | * ospeed:cc's...:seq | |
554 | * | |
555 | * u_comm is a string and all other values are hex. "cc's..." | |
556 | * stands for control chars 0 through NCC-1. seq is a sequence # | |
557 | * to force syslogd to log every entry (rather than hold them to | |
558 | * print "last message repeated...". | |
559 | */ | |
560 | log(LOG_LOCAL4|LOG_DEBUG, "%s:%x:%x:%x:%x:%x:%x:%x:%x:%x:%x:%x:%x:%x:%x:%x:%x:%x:%x:%x:%x:%x:%x:%x:%x:%x:%x:%x:%x:%x:%x:%x\n", | |
561 | comm, ioc, u.u_procp->p_pid, tp->t_dev, tp->t_line, | |
562 | tp->t_iflag, tp->t_oflag, tp->t_lflag, tp->t_cflag, | |
563 | tp->t_ispeed, tp->t_ospeed, cc[0], cc[1], cc[2], cc[3], | |
564 | cc[4], cc[5], cc[6], cc[7], cc[8], cc[9], cc[10], cc[11], | |
565 | cc[12], cc[13], cc[14], cc[15], cc[16], cc[17], cc[18], | |
566 | cc[19], seq++); | |
567 | } | |
568 | ||
e1d74936 BJ |
569 | ttnread(tp) |
570 | struct tty *tp; | |
571 | { | |
572 | int nread = 0; | |
573 | ||
2c6a4e11 | 574 | if (tp->t_lflag & PENDIN) |
e1d74936 BJ |
575 | ttypend(tp); |
576 | nread = tp->t_canq.c_cc; | |
2c6a4e11 | 577 | if (tp->t_lflag & ICANON == 0) |
e1d74936 BJ |
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; | |
4f3a716e | 588 | int s = spltty(); |
e1d74936 | 589 | |
941944c9 | 590 | switch (rw) { |
e1d74936 BJ |
591 | |
592 | case FREAD: | |
593 | nread = ttnread(tp); | |
fb1db32c | 594 | if (nread > 0 || (tp->t_state & TS_CARR_ON) == 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 | 618 | /* |
605d7712 | 619 | * Initial open of tty, or (re)entry to line discipline. |
becb115c | 620 | * Establish a process group for distribution of |
4147b3f6 | 621 | * quits and interrupts from the tty. |
4147b3f6 BJ |
622 | */ |
623 | ttyopen(dev, tp) | |
4b72e2f9 SL |
624 | dev_t dev; |
625 | register struct tty *tp; | |
4147b3f6 BJ |
626 | { |
627 | register struct proc *pp; | |
628 | ||
629 | pp = u.u_procp; | |
630 | tp->t_dev = dev; | |
2c6a4e11 | 631 | if (pp->p_pgrp == 0) { /* XXX - this has got to change */ |
4147b3f6 BJ |
632 | u.u_ttyp = tp; |
633 | u.u_ttyd = dev; | |
634 | if (tp->t_pgrp == 0) | |
635 | tp->t_pgrp = pp->p_pid; | |
636 | pp->p_pgrp = tp->t_pgrp; | |
637 | } | |
638 | tp->t_state &= ~TS_WOPEN; | |
4f3a716e MK |
639 | if ((tp->t_state & TS_ISOPEN) == 0) { |
640 | tp->t_state |= TS_ISOPEN; | |
f9eea644 | 641 | bzero((caddr_t)&tp->t_winsize, sizeof(tp->t_winsize)); |
2c6a4e11 MT |
642 | /* |
643 | * CHANGE: used to do a ttywflush() if it was the | |
644 | * old (old) line discipline. | |
645 | */ | |
4f3a716e | 646 | } |
fc6972ae | 647 | return (0); |
4147b3f6 BJ |
648 | } |
649 | ||
605d7712 MK |
650 | /* |
651 | * "close" a line discipline | |
652 | */ | |
653 | ttylclose(tp) | |
654 | register struct tty *tp; | |
655 | { | |
656 | ||
657 | ttywflush(tp); | |
605d7712 MK |
658 | } |
659 | ||
4147b3f6 BJ |
660 | /* |
661 | * clean tp on last close | |
662 | */ | |
663 | ttyclose(tp) | |
4b72e2f9 | 664 | register struct tty *tp; |
4147b3f6 BJ |
665 | { |
666 | ||
adf4bc89 MK |
667 | if (constty == tp) |
668 | constty = NULL; | |
605d7712 | 669 | ttyflush(tp, FREAD|FWRITE); |
4147b3f6 | 670 | tp->t_pgrp = 0; |
4147b3f6 BJ |
671 | tp->t_state = 0; |
672 | } | |
673 | ||
605d7712 MK |
674 | /* |
675 | * Handle modem control transition on a tty. | |
676 | * Flag indicates new state of carrier. | |
677 | * Returns 0 if the line should be turned off, otherwise 1. | |
678 | */ | |
679 | ttymodem(tp, flag) | |
680 | register struct tty *tp; | |
681 | { | |
682 | ||
2c6a4e11 | 683 | if ((tp->t_state&TS_WOPEN) == 0 && (tp->t_lflag & MDMBUF)) { |
605d7712 MK |
684 | /* |
685 | * MDMBUF: do flow control according to carrier flag | |
686 | */ | |
687 | if (flag) { | |
688 | tp->t_state &= ~TS_TTSTOP; | |
689 | ttstart(tp); | |
690 | } else if ((tp->t_state&TS_TTSTOP) == 0) { | |
691 | tp->t_state |= TS_TTSTOP; | |
692 | (*cdevsw[major(tp->t_dev)].d_stop)(tp, 0); | |
693 | } | |
694 | } else if (flag == 0) { | |
695 | /* | |
696 | * Lost carrier. | |
697 | */ | |
698 | tp->t_state &= ~TS_CARR_ON; | |
699 | if (tp->t_state & TS_ISOPEN) { | |
2c6a4e11 | 700 | if ((tp->t_lflag & NOHANG) == 0) { |
605d7712 MK |
701 | gsignal(tp->t_pgrp, SIGHUP); |
702 | gsignal(tp->t_pgrp, SIGCONT); | |
703 | ttyflush(tp, FREAD|FWRITE); | |
704 | return (0); | |
705 | } | |
706 | } | |
707 | } else { | |
708 | /* | |
709 | * Carrier now on. | |
710 | */ | |
711 | tp->t_state |= TS_CARR_ON; | |
712 | wakeup((caddr_t)&tp->t_rawq); | |
713 | } | |
714 | return (1); | |
715 | } | |
716 | ||
e3f2038d MK |
717 | /* |
718 | * Default modem control routine (for other line disciplines). | |
719 | * Return argument flag, to turn off device on carrier drop. | |
720 | */ | |
2f54b5e8 MK |
721 | nullmodem(tp, flag) |
722 | register struct tty *tp; | |
e3f2038d MK |
723 | int flag; |
724 | { | |
725 | ||
726 | if (flag) | |
727 | tp->t_state |= TS_CARR_ON; | |
728 | else | |
729 | tp->t_state &= ~TS_CARR_ON; | |
730 | return (flag); | |
731 | } | |
732 | ||
4147b3f6 BJ |
733 | /* |
734 | * reinput pending characters after state switch | |
4f3a716e | 735 | * call at spltty(). |
4147b3f6 BJ |
736 | */ |
737 | ttypend(tp) | |
4b72e2f9 | 738 | register struct tty *tp; |
4147b3f6 BJ |
739 | { |
740 | struct clist tq; | |
741 | register c; | |
742 | ||
2c6a4e11 | 743 | tp->t_lflag &= ~PENDIN; |
becb115c | 744 | tp->t_state |= TS_TYPEN; |
4147b3f6 BJ |
745 | tq = tp->t_rawq; |
746 | tp->t_rawq.c_cc = 0; | |
747 | tp->t_rawq.c_cf = tp->t_rawq.c_cl = 0; | |
748 | while ((c = getc(&tq)) >= 0) | |
749 | ttyinput(c, tp); | |
becb115c | 750 | tp->t_state &= ~TS_TYPEN; |
4147b3f6 BJ |
751 | } |
752 | ||
753 | /* | |
2c6a4e11 | 754 | * |
becb115c SL |
755 | * Place a character on raw TTY input queue, |
756 | * putting in delimiters and waking up top | |
757 | * half as needed. Also echo if required. | |
758 | * The arguments are the character and the | |
759 | * appropriate tty structure. | |
4147b3f6 BJ |
760 | */ |
761 | ttyinput(c, tp) | |
4b72e2f9 SL |
762 | register c; |
763 | register struct tty *tp; | |
4147b3f6 | 764 | { |
2c6a4e11 MT |
765 | register int iflag = tp->t_iflag; |
766 | register int lflag = tp->t_lflag; | |
767 | register u_char *cc = tp->t_cc; | |
768 | int i, err; | |
4147b3f6 | 769 | |
becb115c SL |
770 | /* |
771 | * If input is pending take it first. | |
772 | */ | |
2c6a4e11 | 773 | if (lflag&PENDIN) |
4147b3f6 | 774 | ttypend(tp); |
2c6a4e11 | 775 | |
4147b3f6 | 776 | tk_nin++; |
becb115c SL |
777 | |
778 | /* | |
2c6a4e11 | 779 | * Handle exceptional conditions (break, parity, framing). |
becb115c | 780 | */ |
2c6a4e11 MT |
781 | if (err = (c&TTY_ERRORMASK)) { |
782 | c &= TTY_CHARMASK; | |
783 | if (err&TTY_FE && !c) { /* break */ | |
784 | if (iflag&IGNBRK) | |
785 | goto endcase; | |
786 | else if (iflag&BRKINT && lflag&ISIG && | |
787 | (cc[VINTR] != POSIX_V_DISABLE)) | |
788 | c = cc[VINTR]; | |
789 | else | |
790 | c = 0; | |
791 | } else if ((err&TTY_PE && iflag&INPCK) || err&TTY_FE) { | |
792 | if (iflag&IGNPAR) | |
793 | goto endcase; | |
794 | else if (iflag&PARMRK) { | |
795 | ttyinput(0377, tp); | |
796 | ttyinput(0, tp); | |
797 | } else | |
798 | c = 0; | |
4147b3f6 | 799 | } |
becb115c SL |
800 | } |
801 | ||
2c6a4e11 MT |
802 | dprintf("<%o>\n", c); |
803 | ||
804 | /* | |
805 | * In tandem mode, check high water mark. | |
806 | */ | |
807 | if (iflag&IXOFF) | |
808 | ttyblock(tp); | |
809 | ||
becb115c SL |
810 | /* |
811 | * Ignore any high bit added during | |
812 | * previous ttyinput processing. | |
813 | */ | |
2c6a4e11 | 814 | if ((tp->t_state&TS_TYPEN) == 0 && (iflag&ISTRIP)) |
becb115c SL |
815 | c &= 0177; |
816 | /* | |
817 | * Check for literal nexting very first | |
818 | */ | |
819 | if (tp->t_state&TS_LNCH) { | |
820 | c |= 0200; | |
821 | tp->t_state &= ~TS_LNCH; | |
822 | } | |
823 | ||
824 | /* | |
825 | * Scan for special characters. This code | |
826 | * is really just a big case statement with | |
827 | * non-constant cases. The bottom of the | |
828 | * case statement is labeled ``endcase'', so goto | |
829 | * it after a case match, or similar. | |
830 | */ | |
2c6a4e11 MT |
831 | |
832 | /* | |
833 | * Extensions to POSIX input modes which aren't controlled | |
834 | * by ICANON, ISIG, or IXON. | |
835 | */ | |
836 | if (iflag&IEXTEN) { | |
837 | if (CCEQ(cc[VLNEXT],c) && (iflag&ISTRIP)) { | |
838 | if (lflag&ECHO) | |
839 | ttyout("^\b", tp); /*XXX - presumes too much */ | |
becb115c SL |
840 | tp->t_state |= TS_LNCH; |
841 | goto endcase; | |
842 | } | |
2c6a4e11 MT |
843 | if (CCEQ(cc[VFLUSHO],c)) { |
844 | if (lflag&FLUSHO) | |
845 | tp->t_lflag &= ~FLUSHO; | |
4147b3f6 | 846 | else { |
88a7a62a | 847 | ttyflush(tp, FWRITE); |
4147b3f6 | 848 | ttyecho(c, tp); |
becb115c | 849 | if (tp->t_rawq.c_cc + tp->t_canq.c_cc) |
4147b3f6 | 850 | ttyretype(tp); |
2c6a4e11 | 851 | tp->t_lflag |= FLUSHO; |
4147b3f6 | 852 | } |
becb115c SL |
853 | goto startoutput; |
854 | } | |
2c6a4e11 MT |
855 | } |
856 | ||
857 | /* | |
858 | * Signals. | |
859 | */ | |
860 | if (lflag&ISIG) { | |
861 | if (CCEQ(cc[VINTR], c) || CCEQ(cc[VQUIT], c)) { | |
862 | if ((lflag&NOFLSH) == 0) | |
863 | ttyflush(tp, FREAD|FWRITE); | |
864 | ttyecho(c, tp); | |
865 | gsignal(tp->t_pgrp, CCEQ(cc[VINTR],c) ? | |
866 | SIGINT : SIGQUIT); | |
867 | goto endcase; | |
868 | } | |
869 | if (CCEQ(cc[VSUSP],c)) { | |
870 | if ((lflag&NOFLSH) == 0) | |
88a7a62a | 871 | ttyflush(tp, FREAD); |
4147b3f6 | 872 | ttyecho(c, tp); |
becb115c SL |
873 | gsignal(tp->t_pgrp, SIGTSTP); |
874 | goto endcase; | |
875 | } | |
876 | } | |
877 | ||
878 | /* | |
879 | * Handle start/stop characters. | |
880 | */ | |
2c6a4e11 MT |
881 | if (iflag&IXON) { |
882 | if (CCEQ(cc[VSTOP],c)) { | |
883 | if ((tp->t_state&TS_TTSTOP) == 0) { | |
884 | tp->t_state |= TS_TTSTOP; | |
885 | (*cdevsw[major(tp->t_dev)].d_stop)(tp, 0); | |
886 | return; | |
887 | } | |
888 | if (!CCEQ(cc[VSTART], c)) | |
889 | return; | |
890 | /* | |
891 | * if VSTART == VSTOP we toggle | |
892 | */ | |
893 | goto endcase; | |
becb115c | 894 | } |
2c6a4e11 MT |
895 | if (CCEQ(cc[VSTART], c)) |
896 | goto restartoutput; | |
becb115c | 897 | } |
becb115c SL |
898 | |
899 | /* | |
2c6a4e11 | 900 | * IGNCR, ICRNL, & INLCR |
becb115c | 901 | */ |
2c6a4e11 MT |
902 | if (c == '\r') { |
903 | if (iflag&IGNCR) | |
904 | goto endcase; | |
905 | else if (iflag&ICRNL) | |
906 | c = '\n'; | |
becb115c | 907 | } |
2c6a4e11 MT |
908 | else if (c == '\n' && iflag&INLCR) |
909 | c = '\r'; | |
becb115c | 910 | |
2c6a4e11 MT |
911 | #ifdef notdef |
912 | /* | |
913 | * We'd like to completely remove it. | |
914 | */ | |
58786a81 JB |
915 | if (tp->t_flags & LCASE && c <= 0177) { |
916 | if (tp->t_state&TS_BKSL) { | |
917 | ttyrub(unputc(&tp->t_rawq), tp); | |
918 | if (maptab[c]) | |
919 | c = maptab[c]; | |
920 | c |= 0200; | |
921 | tp->t_state &= ~(TS_BKSL|TS_QUOT); | |
922 | } else if (c >= 'A' && c <= 'Z') | |
923 | c += 'a' - 'A'; | |
924 | else if (c == '\\') | |
925 | tp->t_state |= TS_BKSL; | |
926 | } | |
2c6a4e11 | 927 | #endif /*notdef*/ |
58786a81 | 928 | |
becb115c | 929 | /* |
2c6a4e11 | 930 | * Non canonical mode, don't process line editing |
becb115c | 931 | * characters; check high water mark for wakeup. |
2c6a4e11 | 932 | * |
becb115c | 933 | */ |
2c6a4e11 | 934 | if (!(lflag&ICANON)) { |
becb115c | 935 | if (tp->t_rawq.c_cc > TTYHOG) { |
2c6a4e11 MT |
936 | if (iflag&IMAXBEL) { |
937 | if (tp->t_outq.c_cc < TTHIWAT(tp)) | |
938 | (void) ttyoutput(CTRL('g'), tp); | |
939 | } else | |
940 | ttyflush(tp, FREAD | FWRITE); | |
4147b3f6 BJ |
941 | } else if (putc(c, &tp->t_rawq) >= 0) { |
942 | ttwakeup(tp); | |
943 | ttyecho(c, tp); | |
944 | } | |
becb115c SL |
945 | goto endcase; |
946 | } | |
947 | ||
948 | /* | |
2c6a4e11 | 949 | * From here on down canonical mode character |
becb115c SL |
950 | * processing takes place. |
951 | */ | |
2c6a4e11 MT |
952 | |
953 | /* | |
954 | * Oldstyle quoting of erase, kill, and eof chars. | |
955 | * | |
956 | * Historically is '\' , but can be changed (read: disabled) | |
957 | * with the VQUOTE subscript. | |
958 | */ | |
becb115c | 959 | if ((tp->t_state&TS_QUOT) && |
2c6a4e11 | 960 | (CCEQ(cc[VERASE], c) || CCEQ(cc[VKILL], c) || CCEQ(cc[VEOF], c))) { |
becb115c SL |
961 | ttyrub(unputc(&tp->t_rawq), tp); |
962 | c |= 0200; | |
963 | } | |
2c6a4e11 MT |
964 | |
965 | /* | |
966 | * erase (^H / ^?) | |
967 | */ | |
968 | if (CCEQ(cc[VERASE], c)) { | |
becb115c SL |
969 | if (tp->t_rawq.c_cc) |
970 | ttyrub(unputc(&tp->t_rawq), tp); | |
971 | goto endcase; | |
972 | } | |
2c6a4e11 MT |
973 | /* |
974 | * kill (^X / ^U) | |
975 | */ | |
976 | if (CCEQ(cc[VKILL], c)) { | |
977 | if (lflag&ECHOKE && | |
becb115c SL |
978 | tp->t_rawq.c_cc == tp->t_rocount) { |
979 | while (tp->t_rawq.c_cc) | |
980 | ttyrub(unputc(&tp->t_rawq), tp); | |
981 | } else { | |
982 | ttyecho(c, tp); | |
2c6a4e11 MT |
983 | if (lflag&ECHOK || lflag&ECHOKE) |
984 | ttyecho('\n', tp); | |
becb115c SL |
985 | while (getc(&tp->t_rawq) > 0) |
986 | ; | |
987 | tp->t_rocount = 0; | |
988 | } | |
989 | tp->t_state &= ~TS_LOCAL; | |
990 | goto endcase; | |
991 | } | |
992 | ||
993 | /* | |
2c6a4e11 | 994 | * word erase (^W) |
becb115c | 995 | */ |
2c6a4e11 MT |
996 | if (CCEQ(cc[VWERASE], c)) { |
997 | if (tp->t_rawq.c_cc == 0) | |
998 | goto endcase; | |
999 | do { | |
1000 | c = unputc(&tp->t_rawq); | |
1001 | if (c != ' ' && c != '\t') | |
1002 | goto erasenb; | |
1003 | ttyrub(c, tp); | |
1004 | } while (tp->t_rawq.c_cc); | |
1005 | goto endcase; | |
1006 | erasenb: | |
1007 | do { | |
1008 | ttyrub(c, tp); | |
becb115c SL |
1009 | if (tp->t_rawq.c_cc == 0) |
1010 | goto endcase; | |
2c6a4e11 MT |
1011 | c = unputc(&tp->t_rawq); |
1012 | } while (c != ' ' && c != '\t'); | |
1013 | (void) putc(c, &tp->t_rawq); | |
1014 | goto endcase; | |
1015 | } | |
1016 | /* | |
1017 | * reprint line (^R) | |
1018 | */ | |
1019 | if (CCEQ(cc[VREPRINT], c)) { | |
1020 | ttyretype(tp); | |
1021 | goto endcase; | |
becb115c SL |
1022 | } |
1023 | ||
1024 | /* | |
1025 | * Check for input buffer overflow | |
1026 | */ | |
7c9f96c0 | 1027 | if (tp->t_rawq.c_cc+tp->t_canq.c_cc >= TTYHOG) { |
2c6a4e11 MT |
1028 | if (iflag&IMAXBEL) { |
1029 | if (tp->t_outq.c_cc < TTHIWAT(tp)) | |
1030 | (void) ttyoutput(CTRL('g'), tp); | |
1031 | } else | |
1032 | ttyflush(tp, FREAD | FWRITE); | |
becb115c | 1033 | goto endcase; |
7c9f96c0 | 1034 | } |
becb115c SL |
1035 | |
1036 | /* | |
1037 | * Put data char in q for user and | |
1038 | * wakeup on seeing a line delimiter. | |
1039 | */ | |
1040 | if (putc(c, &tp->t_rawq) >= 0) { | |
2c6a4e11 | 1041 | if (ttbreakc(c)) { |
becb115c SL |
1042 | tp->t_rocount = 0; |
1043 | catq(&tp->t_rawq, &tp->t_canq); | |
4147b3f6 | 1044 | ttwakeup(tp); |
becb115c SL |
1045 | } else if (tp->t_rocount++ == 0) |
1046 | tp->t_rocol = tp->t_col; | |
1047 | tp->t_state &= ~TS_QUOT; | |
2c6a4e11 MT |
1048 | if (CCEQ(cc[VQUOTE], c) && (iflag&ISTRIP)) |
1049 | tp->t_state |= TS_QUOT; /* '\' escape */ | |
becb115c | 1050 | if (tp->t_state&TS_ERASE) { |
2c6a4e11 MT |
1051 | /* |
1052 | * end of prterase \.../ | |
1053 | */ | |
becb115c SL |
1054 | tp->t_state &= ~TS_ERASE; |
1055 | (void) ttyoutput('/', tp); | |
1056 | } | |
1057 | i = tp->t_col; | |
4147b3f6 | 1058 | ttyecho(c, tp); |
2c6a4e11 MT |
1059 | if (CCEQ(cc[VEOF], c) && lflag&ECHO) { |
1060 | /* | |
1061 | * Place the cursor over the '^' of the ^D. | |
1062 | */ | |
becb115c SL |
1063 | i = MIN(2, tp->t_col - i); |
1064 | while (i > 0) { | |
1065 | (void) ttyoutput('\b', tp); | |
1066 | i--; | |
1067 | } | |
1068 | } | |
4147b3f6 | 1069 | } |
becb115c SL |
1070 | endcase: |
1071 | /* | |
2c6a4e11 | 1072 | * IXANY means allow any character to restart output. |
becb115c | 1073 | */ |
2c6a4e11 MT |
1074 | if (tp->t_state&TS_TTSTOP && (iflag&IXANY == 0) |
1075 | && cc[VSTART] != cc[VSTOP]) | |
4147b3f6 | 1076 | return; |
2c6a4e11 | 1077 | |
becb115c | 1078 | restartoutput: |
4147b3f6 | 1079 | tp->t_state &= ~TS_TTSTOP; |
2c6a4e11 | 1080 | tp->t_lflag &= ~FLUSHO; |
becb115c | 1081 | startoutput: |
4147b3f6 BJ |
1082 | ttstart(tp); |
1083 | } | |
1084 | ||
1085 | /* | |
becb115c | 1086 | * Put character on TTY output queue, adding delays, |
4147b3f6 | 1087 | * expanding tabs, and handling the CR/NL bit. |
becb115c SL |
1088 | * This is called both from the top half for output, |
1089 | * and from interrupt level for echoing. | |
4147b3f6 BJ |
1090 | * The arguments are the character and the tty structure. |
1091 | * Returns < 0 if putc succeeds, otherwise returns char to resend | |
1092 | * Must be recursive. | |
1093 | */ | |
1094 | ttyoutput(c, tp) | |
1095 | register c; | |
1096 | register struct tty *tp; | |
1097 | { | |
1098 | register char *colp; | |
1099 | register ctype; | |
1100 | ||
2c6a4e11 MT |
1101 | if (!(tp->t_oflag&OPOST)) { |
1102 | if (tp->t_lflag&FLUSHO) | |
4147b3f6 BJ |
1103 | return (-1); |
1104 | if (putc(c, &tp->t_outq)) | |
4b72e2f9 | 1105 | return (c); |
4147b3f6 BJ |
1106 | tk_nout++; |
1107 | return (-1); | |
1108 | } | |
2c6a4e11 | 1109 | c &= 0377; |
4147b3f6 BJ |
1110 | /* |
1111 | * Turn tabs to spaces as required | |
1112 | */ | |
2c6a4e11 | 1113 | if (c == '\t' && tp->t_oflag&OXTABS ) { |
4147b3f6 BJ |
1114 | register int s; |
1115 | ||
1116 | c = 8 - (tp->t_col&7); | |
2c6a4e11 | 1117 | if ((tp->t_lflag&FLUSHO) == 0) { |
4f3a716e | 1118 | s = spltty(); /* don't interrupt tabs */ |
4147b3f6 BJ |
1119 | c -= b_to_q(" ", c, &tp->t_outq); |
1120 | tk_nout += c; | |
1121 | splx(s); | |
1122 | } | |
1123 | tp->t_col += c; | |
1124 | return (c ? -1 : '\t'); | |
1125 | } | |
1126 | tk_nout++; | |
2c6a4e11 | 1127 | #ifdef notdef |
4147b3f6 BJ |
1128 | /* |
1129 | * for upper-case-only terminals, | |
1130 | * generate escapes. | |
1131 | */ | |
1132 | if (tp->t_flags&LCASE) { | |
1133 | colp = "({)}!|^~'`"; | |
4b72e2f9 SL |
1134 | while (*colp++) |
1135 | if (c == *colp++) { | |
4147b3f6 BJ |
1136 | if (ttyoutput('\\', tp) >= 0) |
1137 | return (c); | |
1138 | c = colp[-2]; | |
1139 | break; | |
1140 | } | |
becb115c | 1141 | if ('A' <= c && c <= 'Z') { |
4147b3f6 BJ |
1142 | if (ttyoutput('\\', tp) >= 0) |
1143 | return (c); | |
becb115c | 1144 | } else if ('a' <= c && c <= 'z') |
4147b3f6 BJ |
1145 | c += 'A' - 'a'; |
1146 | } | |
2c6a4e11 | 1147 | #endif |
becb115c | 1148 | |
4147b3f6 BJ |
1149 | /* |
1150 | * turn <nl> to <cr><lf> if desired. | |
1151 | */ | |
2c6a4e11 | 1152 | if (c == '\n' && (tp->t_oflag&ONLCR) && ttyoutput('\r', tp) >= 0) |
4147b3f6 | 1153 | return (c); |
2c6a4e11 | 1154 | #ifdef notdef |
becb115c | 1155 | if (c == '~' && tp->t_flags&TILDE) |
4147b3f6 | 1156 | c = '`'; |
2c6a4e11 MT |
1157 | #endif |
1158 | if ((tp->t_lflag&FLUSHO) == 0 && putc(c, &tp->t_outq)) | |
4147b3f6 BJ |
1159 | return (c); |
1160 | /* | |
1161 | * Calculate delays. | |
1162 | * The numbers here represent clock ticks | |
1163 | * and are not necessarily optimal for all terminals. | |
1164 | * The delays are indicated by characters above 0200. | |
1165 | * In raw mode there are no delays and the | |
1166 | * transmission path is 8 bits wide. | |
becb115c SL |
1167 | * |
1168 | * SHOULD JUST ALLOW USER TO SPECIFY DELAYS | |
4147b3f6 BJ |
1169 | */ |
1170 | colp = &tp->t_col; | |
1171 | ctype = partab[c]; | |
1172 | c = 0; | |
1173 | switch (ctype&077) { | |
1174 | ||
1175 | case ORDINARY: | |
1176 | (*colp)++; | |
1177 | ||
1178 | case CONTROL: | |
1179 | break; | |
1180 | ||
1181 | case BACKSPACE: | |
1182 | if (*colp) | |
1183 | (*colp)--; | |
1184 | break; | |
1185 | ||
3686c829 SL |
1186 | /* |
1187 | * This macro is close enough to the correct thing; | |
1188 | * it should be replaced by real user settable delays | |
1189 | * in any event... | |
1190 | */ | |
1191 | #define mstohz(ms) (((ms) * hz) >> 10) | |
4147b3f6 BJ |
1192 | case NEWLINE: |
1193 | ctype = (tp->t_flags >> 8) & 03; | |
4b72e2f9 | 1194 | if (ctype == 1) { /* tty 37 */ |
8011f5df MK |
1195 | if (*colp > 0) { |
1196 | c = (((unsigned)*colp) >> 4) + 3; | |
1197 | if ((unsigned)c > 6) | |
1198 | c = 6; | |
1199 | } | |
becb115c | 1200 | } else if (ctype == 2) /* vt05 */ |
3686c829 | 1201 | c = mstohz(100); |
4147b3f6 BJ |
1202 | *colp = 0; |
1203 | break; | |
1204 | ||
1205 | case TAB: | |
1206 | ctype = (tp->t_flags >> 10) & 03; | |
4b72e2f9 | 1207 | if (ctype == 1) { /* tty 37 */ |
4147b3f6 | 1208 | c = 1 - (*colp | ~07); |
4b72e2f9 | 1209 | if (c < 5) |
4147b3f6 BJ |
1210 | c = 0; |
1211 | } | |
1212 | *colp |= 07; | |
1213 | (*colp)++; | |
1214 | break; | |
1215 | ||
1216 | case VTAB: | |
becb115c | 1217 | if (tp->t_flags&VTDELAY) /* tty 37 */ |
4147b3f6 BJ |
1218 | c = 0177; |
1219 | break; | |
1220 | ||
1221 | case RETURN: | |
1222 | ctype = (tp->t_flags >> 12) & 03; | |
becb115c | 1223 | if (ctype == 1) /* tn 300 */ |
3686c829 | 1224 | c = mstohz(83); |
becb115c | 1225 | else if (ctype == 2) /* ti 700 */ |
3686c829 | 1226 | c = mstohz(166); |
becb115c | 1227 | else if (ctype == 3) { /* concept 100 */ |
4147b3f6 | 1228 | int i; |
becb115c | 1229 | |
4147b3f6 | 1230 | if ((i = *colp) >= 0) |
becb115c | 1231 | for (; i < 9; i++) |
4147b3f6 BJ |
1232 | (void) putc(0177, &tp->t_outq); |
1233 | } | |
1234 | *colp = 0; | |
1235 | } | |
2c6a4e11 | 1236 | if (c && (tp->t_lflag&FLUSHO) == 0) |
4147b3f6 BJ |
1237 | (void) putc(c|0200, &tp->t_outq); |
1238 | return (-1); | |
1239 | } | |
3686c829 | 1240 | #undef mstohz |
4147b3f6 BJ |
1241 | |
1242 | /* | |
1243 | * Called from device's read routine after it has | |
1244 | * calculated the tty-structure given as argument. | |
1245 | */ | |
d6d7360b | 1246 | ttread(tp, uio) |
4b72e2f9 | 1247 | register struct tty *tp; |
d6d7360b | 1248 | struct uio *uio; |
4147b3f6 BJ |
1249 | { |
1250 | register struct clist *qp; | |
2c6a4e11 MT |
1251 | register int c, t_flags; |
1252 | register long lflag = tp->t_lflag; | |
1253 | register long iflag = tp->t_iflag; | |
1254 | register u_char *cc = tp->t_cc; | |
875a1e2c | 1255 | int s, first, error = 0; |
4147b3f6 | 1256 | |
2c6a4e11 | 1257 | |
4147b3f6 | 1258 | loop: |
becb115c SL |
1259 | /* |
1260 | * Take any pending input first. | |
1261 | */ | |
4f3a716e | 1262 | s = spltty(); |
2c6a4e11 | 1263 | if (tp->t_lflag&PENDIN) |
4147b3f6 | 1264 | ttypend(tp); |
875a1e2c | 1265 | splx(s); |
becb115c | 1266 | |
58786a81 JB |
1267 | if ((tp->t_state&TS_CARR_ON)==0) |
1268 | return (EIO); | |
1269 | ||
becb115c SL |
1270 | /* |
1271 | * Hang process if it's in the background. | |
1272 | */ | |
58786a81 | 1273 | if (tp == u.u_ttyp && u.u_procp->p_pgrp != tp->t_pgrp) { |
52c041cd MK |
1274 | if ((u.u_procp->p_sigignore & sigmask(SIGTTIN)) || |
1275 | (u.u_procp->p_sigmask & sigmask(SIGTTIN)) || | |
4147b3f6 | 1276 | u.u_procp->p_flag&SVFORK) |
840510a3 | 1277 | return (EIO); |
4147b3f6 BJ |
1278 | gsignal(u.u_procp->p_pgrp, SIGTTIN); |
1279 | sleep((caddr_t)&lbolt, TTIPRI); | |
58786a81 | 1280 | goto loop; |
4147b3f6 | 1281 | } |
becb115c SL |
1282 | t_flags = tp->t_flags; |
1283 | ||
1284 | /* | |
2c6a4e11 MT |
1285 | * If canonical, use the canonical queue, |
1286 | * else use the raw queue. | |
becb115c | 1287 | */ |
2c6a4e11 | 1288 | qp = lflag&ICANON ? &tp->t_canq : &tp->t_rawq; |
becb115c SL |
1289 | |
1290 | /* | |
1291 | * No input, sleep on rawq awaiting hardware | |
1292 | * receipt and notification. | |
1293 | */ | |
4f3a716e | 1294 | s = spltty(); |
becb115c SL |
1295 | if (qp->c_cc <= 0) { |
1296 | if ((tp->t_state&TS_CARR_ON) == 0 || | |
1297 | (tp->t_state&TS_NBIO)) { | |
875a1e2c | 1298 | splx(s); |
becb115c | 1299 | return (EWOULDBLOCK); |
4147b3f6 | 1300 | } |
becb115c | 1301 | sleep((caddr_t)&tp->t_rawq, TTIPRI); |
875a1e2c | 1302 | splx(s); |
becb115c SL |
1303 | goto loop; |
1304 | } | |
875a1e2c | 1305 | splx(s); |
becb115c SL |
1306 | |
1307 | /* | |
2c6a4e11 | 1308 | * Input present, check for input mapping and processing. |
becb115c SL |
1309 | */ |
1310 | first = 1; | |
1311 | while ((c = getc(qp)) >= 0) { | |
becb115c | 1312 | /* |
2c6a4e11 | 1313 | * delayed suspend (^Y) |
becb115c | 1314 | */ |
2c6a4e11 | 1315 | if (CCEQ(cc[VDSUSP], c) && lflag&ISIG) { |
becb115c SL |
1316 | gsignal(tp->t_pgrp, SIGTSTP); |
1317 | if (first) { | |
1318 | sleep((caddr_t)&lbolt, TTIPRI); | |
1319 | goto loop; | |
1320 | } | |
1321 | break; | |
4147b3f6 | 1322 | } |
becb115c | 1323 | /* |
2c6a4e11 | 1324 | * Interpret EOF only in canonical mode. |
becb115c | 1325 | */ |
2c6a4e11 | 1326 | if (CCEQ(cc[VEOF], c) && lflag&ICANON) |
becb115c SL |
1327 | break; |
1328 | /* | |
1329 | * Give user character. | |
1330 | */ | |
2c6a4e11 | 1331 | error = ureadc(iflag&ISTRIP ? c & 0177 : c , uio); |
becb115c SL |
1332 | if (error) |
1333 | break; | |
9ec65acb | 1334 | if (uio->uio_resid == 0) |
becb115c SL |
1335 | break; |
1336 | /* | |
2c6a4e11 | 1337 | * In canonical mode check for a "break character" |
becb115c SL |
1338 | * marking the end of a "line of input". |
1339 | */ | |
2c6a4e11 | 1340 | if (lflag&ICANON && ttbreakc(c)) { |
becb115c | 1341 | break; |
2c6a4e11 | 1342 | } |
becb115c | 1343 | first = 0; |
4147b3f6 | 1344 | } |
becb115c | 1345 | |
875a1e2c | 1346 | checktandem: |
becb115c SL |
1347 | /* |
1348 | * Look to unblock output now that (presumably) | |
1349 | * the input queue has gone down. | |
1350 | */ | |
2c6a4e11 MT |
1351 | if (tp->t_state&TS_TBLOCK && tp->t_rawq.c_cc < TTYHOG/5) { |
1352 | if (cc[VSTART] != POSIX_V_DISABLE | |
1353 | && putc(cc[VSTART], &tp->t_outq) == 0) { | |
4147b3f6 BJ |
1354 | tp->t_state &= ~TS_TBLOCK; |
1355 | ttstart(tp); | |
1356 | } | |
2c6a4e11 | 1357 | } |
840510a3 | 1358 | return (error); |
4147b3f6 BJ |
1359 | } |
1360 | ||
605d7712 MK |
1361 | /* |
1362 | * Check the output queue on tp for space for a kernel message | |
1363 | * (from uprintf/tprintf). Allow some space over the normal | |
1364 | * hiwater mark so we don't lose messages due to normal flow | |
1365 | * control, but don't let the tty run amok. | |
ca9b16e5 MK |
1366 | * Sleeps here are not interruptible, but we return prematurely |
1367 | * if new signals come in. | |
605d7712 MK |
1368 | */ |
1369 | ttycheckoutq(tp, wait) | |
1370 | register struct tty *tp; | |
1371 | int wait; | |
1372 | { | |
ca9b16e5 | 1373 | int hiwat, s, oldsig; |
605d7712 MK |
1374 | |
1375 | hiwat = TTHIWAT(tp); | |
1376 | s = spltty(); | |
ca9b16e5 | 1377 | oldsig = u.u_procp->p_sig; |
605d7712 | 1378 | if (tp->t_outq.c_cc > hiwat + 200) |
fb1db32c MK |
1379 | while (tp->t_outq.c_cc > hiwat) { |
1380 | ttstart(tp); | |
ca9b16e5 | 1381 | if (wait == 0 || u.u_procp->p_sig != oldsig) { |
fb1db32c MK |
1382 | splx(s); |
1383 | return (0); | |
1384 | } | |
ca9b16e5 | 1385 | timeout(wakeup, (caddr_t)&tp->t_outq, hz); |
fb1db32c | 1386 | tp->t_state |= TS_ASLEEP; |
ca9b16e5 | 1387 | sleep((caddr_t)&tp->t_outq, PZERO - 1); |
605d7712 | 1388 | } |
605d7712 MK |
1389 | splx(s); |
1390 | return (1); | |
1391 | } | |
1392 | ||
4147b3f6 BJ |
1393 | /* |
1394 | * Called from the device's write routine after it has | |
1395 | * calculated the tty-structure given as argument. | |
1396 | */ | |
913ea2d1 | 1397 | ttwrite(tp, uio) |
4b72e2f9 | 1398 | register struct tty *tp; |
becb115c | 1399 | register struct uio *uio; |
4147b3f6 | 1400 | { |
4147b3f6 | 1401 | register char *cp; |
becb115c SL |
1402 | register int cc, ce, c; |
1403 | int i, hiwat, cnt, error, s; | |
4147b3f6 | 1404 | char obuf[OBUFSIZ]; |
4147b3f6 | 1405 | |
becb115c SL |
1406 | hiwat = TTHIWAT(tp); |
1407 | cnt = uio->uio_resid; | |
1408 | error = 0; | |
4147b3f6 | 1409 | loop: |
93d2ecff JB |
1410 | if ((tp->t_state&TS_CARR_ON) == 0) |
1411 | return (EIO); | |
becb115c SL |
1412 | /* |
1413 | * Hang the process if it's in the background. | |
1414 | */ | |
93d2ecff | 1415 | if (u.u_procp->p_pgrp != tp->t_pgrp && tp == u.u_ttyp && |
2c6a4e11 | 1416 | (tp->t_lflag&TOSTOP) && (u.u_procp->p_flag&SVFORK)==0 && |
52c041cd MK |
1417 | !(u.u_procp->p_sigignore & sigmask(SIGTTOU)) && |
1418 | !(u.u_procp->p_sigmask & sigmask(SIGTTOU))) { | |
4147b3f6 BJ |
1419 | gsignal(u.u_procp->p_pgrp, SIGTTOU); |
1420 | sleep((caddr_t)&lbolt, TTIPRI); | |
93d2ecff | 1421 | goto loop; |
4147b3f6 | 1422 | } |
becb115c SL |
1423 | |
1424 | /* | |
1425 | * Process the user's data in at most OBUFSIZ | |
1426 | * chunks. Perform lower case simulation and | |
1427 | * similar hacks. Keep track of high water | |
1428 | * mark, sleep on overflow awaiting device aid | |
1429 | * in acquiring new space. | |
1430 | */ | |
913ea2d1 | 1431 | while (uio->uio_resid > 0) { |
b482b2c8 MK |
1432 | if (tp->t_outq.c_cc > hiwat) { |
1433 | cc = 0; | |
1434 | goto ovhiwat; | |
1435 | } | |
becb115c SL |
1436 | /* |
1437 | * Grab a hunk of data from the user. | |
1438 | */ | |
913ea2d1 BJ |
1439 | cc = uio->uio_iov->iov_len; |
1440 | if (cc == 0) { | |
1441 | uio->uio_iovcnt--; | |
1442 | uio->uio_iov++; | |
93d2ecff | 1443 | if (uio->uio_iovcnt <= 0) |
913ea2d1 BJ |
1444 | panic("ttwrite"); |
1445 | continue; | |
1446 | } | |
1447 | if (cc > OBUFSIZ) | |
1448 | cc = OBUFSIZ; | |
4147b3f6 | 1449 | cp = obuf; |
88a7a62a | 1450 | error = uiomove(cp, cc, UIO_WRITE, uio); |
840510a3 | 1451 | if (error) |
4147b3f6 | 1452 | break; |
2c6a4e11 | 1453 | if (tp->t_lflag&FLUSHO) |
4147b3f6 | 1454 | continue; |
2c6a4e11 | 1455 | #ifdef notdef |
becb115c SL |
1456 | /* |
1457 | * If we're mapping lower case or kludging tildes, | |
1458 | * then we've got to look at each character, so | |
1459 | * just feed the stuff to ttyoutput... | |
1460 | */ | |
1461 | if (tp->t_flags & (LCASE|TILDE)) { | |
1462 | while (cc > 0) { | |
4147b3f6 BJ |
1463 | c = *cp++; |
1464 | tp->t_rocount = 0; | |
4b72e2f9 | 1465 | while ((c = ttyoutput(c, tp)) >= 0) { |
4147b3f6 BJ |
1466 | /* out of clists, wait a bit */ |
1467 | ttstart(tp); | |
1468 | sleep((caddr_t)&lbolt, TTOPRI); | |
1469 | tp->t_rocount = 0; | |
93d2ecff JB |
1470 | if (cc != 0) { |
1471 | uio->uio_iov->iov_base -= cc; | |
1472 | uio->uio_iov->iov_len += cc; | |
1473 | uio->uio_resid += cc; | |
1474 | uio->uio_offset -= cc; | |
1475 | } | |
1476 | goto loop; | |
4147b3f6 BJ |
1477 | } |
1478 | --cc; | |
1479 | if (tp->t_outq.c_cc > hiwat) | |
1480 | goto ovhiwat; | |
1481 | } | |
1482 | continue; | |
1483 | } | |
2c6a4e11 | 1484 | #endif |
becb115c SL |
1485 | /* |
1486 | * If nothing fancy need be done, grab those characters we | |
1487 | * can handle without any of ttyoutput's processing and | |
1488 | * just transfer them to the output q. For those chars | |
1489 | * which require special processing (as indicated by the | |
1490 | * bits in partab), call ttyoutput. After processing | |
1491 | * a hunk of data, look for FLUSHO so ^O's will take effect | |
1492 | * immediately. | |
1493 | */ | |
1494 | while (cc > 0) { | |
2c6a4e11 | 1495 | if (!(tp->t_oflag&OPOST)) |
4147b3f6 BJ |
1496 | ce = cc; |
1497 | else { | |
3f36033f MK |
1498 | ce = cc - scanc((unsigned)cc, (u_char *)cp, |
1499 | (u_char *)partab, 077); | |
becb115c SL |
1500 | /* |
1501 | * If ce is zero, then we're processing | |
1502 | * a special character through ttyoutput. | |
1503 | */ | |
1504 | if (ce == 0) { | |
4147b3f6 BJ |
1505 | tp->t_rocount = 0; |
1506 | if (ttyoutput(*cp, tp) >= 0) { | |
93d2ecff JB |
1507 | /* no c-lists, wait a bit */ |
1508 | ttstart(tp); | |
1509 | sleep((caddr_t)&lbolt, TTOPRI); | |
1510 | if (cc != 0) { | |
1511 | uio->uio_iov->iov_base -= cc; | |
1512 | uio->uio_iov->iov_len += cc; | |
1513 | uio->uio_resid += cc; | |
1514 | uio->uio_offset -= cc; | |
1515 | } | |
1516 | goto loop; | |
4147b3f6 | 1517 | } |
becb115c | 1518 | cp++, cc--; |
2c6a4e11 | 1519 | if (tp->t_lflag&FLUSHO || |
becb115c | 1520 | tp->t_outq.c_cc > hiwat) |
4147b3f6 | 1521 | goto ovhiwat; |
becb115c | 1522 | continue; |
4147b3f6 BJ |
1523 | } |
1524 | } | |
becb115c SL |
1525 | /* |
1526 | * A bunch of normal characters have been found, | |
1527 | * transfer them en masse to the output queue and | |
1528 | * continue processing at the top of the loop. | |
1529 | * If there are any further characters in this | |
1530 | * <= OBUFSIZ chunk, the first should be a character | |
1531 | * requiring special handling by ttyoutput. | |
1532 | */ | |
4147b3f6 | 1533 | tp->t_rocount = 0; |
becb115c SL |
1534 | i = b_to_q(cp, ce, &tp->t_outq); |
1535 | ce -= i; | |
1536 | tp->t_col += ce; | |
1537 | cp += ce, cc -= ce, tk_nout += ce; | |
1538 | if (i > 0) { | |
1539 | /* out of c-lists, wait a bit */ | |
4147b3f6 BJ |
1540 | ttstart(tp); |
1541 | sleep((caddr_t)&lbolt, TTOPRI); | |
93d2ecff JB |
1542 | uio->uio_iov->iov_base -= cc; |
1543 | uio->uio_iov->iov_len += cc; | |
1544 | uio->uio_resid += cc; | |
1545 | uio->uio_offset -= cc; | |
1546 | goto loop; | |
4147b3f6 | 1547 | } |
2c6a4e11 | 1548 | if (tp->t_lflag&FLUSHO || tp->t_outq.c_cc > hiwat) |
4147b3f6 BJ |
1549 | goto ovhiwat; |
1550 | } | |
2c6a4e11 | 1551 | ttstart(tp); |
4147b3f6 | 1552 | } |
840510a3 | 1553 | return (error); |
4147b3f6 BJ |
1554 | |
1555 | ovhiwat: | |
becb115c SL |
1556 | if (cc != 0) { |
1557 | uio->uio_iov->iov_base -= cc; | |
1558 | uio->uio_iov->iov_len += cc; | |
1559 | uio->uio_resid += cc; | |
1560 | uio->uio_offset -= cc; | |
1561 | } | |
b482b2c8 MK |
1562 | ttstart(tp); |
1563 | s = spltty(); | |
becb115c | 1564 | /* |
2c6a4e11 | 1565 | * This can only occur if FLUSHO is set in t_lflag, |
b482b2c8 | 1566 | * or if ttstart/oproc is synchronous (or very fast). |
becb115c | 1567 | */ |
4147b3f6 | 1568 | if (tp->t_outq.c_cc <= hiwat) { |
becb115c | 1569 | splx(s); |
4147b3f6 BJ |
1570 | goto loop; |
1571 | } | |
becb115c | 1572 | if (tp->t_state&TS_NBIO) { |
4f3a716e | 1573 | splx(s); |
913ea2d1 | 1574 | if (uio->uio_resid == cnt) |
840510a3 BJ |
1575 | return (EWOULDBLOCK); |
1576 | return (0); | |
4147b3f6 BJ |
1577 | } |
1578 | tp->t_state |= TS_ASLEEP; | |
1579 | sleep((caddr_t)&tp->t_outq, TTOPRI); | |
becb115c | 1580 | splx(s); |
4147b3f6 BJ |
1581 | goto loop; |
1582 | } | |
1583 | ||
1584 | /* | |
1585 | * Rubout one character from the rawq of tp | |
1586 | * as cleanly as possible. | |
1587 | */ | |
1588 | ttyrub(c, tp) | |
4b72e2f9 SL |
1589 | register c; |
1590 | register struct tty *tp; | |
4147b3f6 BJ |
1591 | { |
1592 | register char *cp; | |
1593 | register int savecol; | |
1594 | int s; | |
1595 | char *nextc(); | |
1596 | ||
2c6a4e11 | 1597 | if ((tp->t_lflag&ECHO) == 0) |
4147b3f6 | 1598 | return; |
2c6a4e11 | 1599 | tp->t_lflag &= ~FLUSHO; |
4147b3f6 | 1600 | c &= 0377; |
2c6a4e11 | 1601 | if (tp->t_lflag&ECHOE) { |
4147b3f6 BJ |
1602 | if (tp->t_rocount == 0) { |
1603 | /* | |
1604 | * Screwed by ttwrite; retype | |
1605 | */ | |
1606 | ttyretype(tp); | |
1607 | return; | |
1608 | } | |
2c6a4e11 | 1609 | /* if tab or newline was escaped - XXX - not 8bit */ |
becb115c | 1610 | if (c == ('\t'|0200) || c == ('\n'|0200)) |
4147b3f6 | 1611 | ttyrubo(tp, 2); |
becb115c | 1612 | else switch (partab[c&=0177]&0177) { |
4147b3f6 BJ |
1613 | |
1614 | case ORDINARY: | |
2c6a4e11 | 1615 | #ifdef notdef |
4147b3f6 BJ |
1616 | if (tp->t_flags&LCASE && c >= 'A' && c <= 'Z') |
1617 | ttyrubo(tp, 2); | |
1618 | else | |
2c6a4e11 | 1619 | #endif |
4147b3f6 BJ |
1620 | ttyrubo(tp, 1); |
1621 | break; | |
1622 | ||
1623 | case VTAB: | |
1624 | case BACKSPACE: | |
1625 | case CONTROL: | |
1626 | case RETURN: | |
2c6a4e11 | 1627 | if (tp->t_lflag&ECHOCTL) |
4147b3f6 BJ |
1628 | ttyrubo(tp, 2); |
1629 | break; | |
1630 | ||
1631 | case TAB: | |
1632 | if (tp->t_rocount < tp->t_rawq.c_cc) { | |
1633 | ttyretype(tp); | |
1634 | return; | |
1635 | } | |
4f3a716e | 1636 | s = spltty(); |
4147b3f6 | 1637 | savecol = tp->t_col; |
becb115c | 1638 | tp->t_state |= TS_CNTTB; |
2c6a4e11 | 1639 | tp->t_lflag |= FLUSHO; |
4147b3f6 | 1640 | tp->t_col = tp->t_rocol; |
becb115c SL |
1641 | cp = tp->t_rawq.c_cf; |
1642 | for (; cp; cp = nextc(&tp->t_rawq, cp)) | |
4147b3f6 | 1643 | ttyecho(*cp, tp); |
2c6a4e11 | 1644 | tp->t_lflag &= ~FLUSHO; |
becb115c | 1645 | tp->t_state &= ~TS_CNTTB; |
4147b3f6 BJ |
1646 | splx(s); |
1647 | /* | |
1648 | * savecol will now be length of the tab | |
1649 | */ | |
1650 | savecol -= tp->t_col; | |
1651 | tp->t_col += savecol; | |
1652 | if (savecol > 8) | |
1653 | savecol = 8; /* overflow screw */ | |
1654 | while (--savecol >= 0) | |
1655 | (void) ttyoutput('\b', tp); | |
1656 | break; | |
1657 | ||
1658 | default: | |
1659 | panic("ttyrub"); | |
1660 | } | |
2c6a4e11 | 1661 | } else if (tp->t_lflag&ECHOPRT) { |
becb115c | 1662 | if ((tp->t_state&TS_ERASE) == 0) { |
4147b3f6 | 1663 | (void) ttyoutput('\\', tp); |
becb115c | 1664 | tp->t_state |= TS_ERASE; |
4147b3f6 BJ |
1665 | } |
1666 | ttyecho(c, tp); | |
1667 | } else | |
2c6a4e11 | 1668 | ttyecho(tp->t_cc[VERASE], tp); |
4147b3f6 BJ |
1669 | tp->t_rocount--; |
1670 | } | |
1671 | ||
1672 | /* | |
1673 | * Crt back over cnt chars perhaps | |
1674 | * erasing them. | |
1675 | */ | |
1676 | ttyrubo(tp, cnt) | |
4b72e2f9 SL |
1677 | register struct tty *tp; |
1678 | int cnt; | |
4147b3f6 | 1679 | { |
2c6a4e11 | 1680 | register char *rubostring = tp->t_lflag&ECHOE ? "\b \b" : "\b"; |
4147b3f6 BJ |
1681 | |
1682 | while (--cnt >= 0) | |
becb115c | 1683 | ttyout(rubostring, tp); |
4147b3f6 BJ |
1684 | } |
1685 | ||
1686 | /* | |
1687 | * Reprint the rawq line. | |
1688 | * We assume c_cc has already been checked. | |
1689 | */ | |
1690 | ttyretype(tp) | |
4b72e2f9 | 1691 | register struct tty *tp; |
4147b3f6 BJ |
1692 | { |
1693 | register char *cp; | |
1694 | char *nextc(); | |
1695 | int s; | |
1696 | ||
2c6a4e11 MT |
1697 | if (tp->t_cc[VREPRINT] != POSIX_V_DISABLE) |
1698 | ttyecho(tp->t_cc[VREPRINT], tp); | |
4147b3f6 | 1699 | (void) ttyoutput('\n', tp); |
4f3a716e | 1700 | s = spltty(); |
4147b3f6 BJ |
1701 | for (cp = tp->t_canq.c_cf; cp; cp = nextc(&tp->t_canq, cp)) |
1702 | ttyecho(*cp, tp); | |
1703 | for (cp = tp->t_rawq.c_cf; cp; cp = nextc(&tp->t_rawq, cp)) | |
1704 | ttyecho(*cp, tp); | |
becb115c | 1705 | tp->t_state &= ~TS_ERASE; |
4147b3f6 BJ |
1706 | splx(s); |
1707 | tp->t_rocount = tp->t_rawq.c_cc; | |
1708 | tp->t_rocol = 0; | |
1709 | } | |
1710 | ||
1711 | /* | |
2c6a4e11 | 1712 | * Echo a typed character to the terminal. |
4147b3f6 BJ |
1713 | */ |
1714 | ttyecho(c, tp) | |
4b72e2f9 SL |
1715 | register c; |
1716 | register struct tty *tp; | |
4147b3f6 BJ |
1717 | { |
1718 | ||
4147b3f6 | 1719 | c &= 0377; |
2c6a4e11 MT |
1720 | if ((tp->t_state&TS_CNTTB) == 0) |
1721 | tp->t_lflag &= ~FLUSHO; | |
1722 | if ((tp->t_lflag&ECHO) == 0 && !(tp->t_lflag&ECHONL && c == '\n')) | |
4147b3f6 | 1723 | return; |
2c6a4e11 | 1724 | if (tp->t_lflag&ECHOCTL) { |
4147b3f6 BJ |
1725 | if ((c&0177) <= 037 && c!='\t' && c!='\n' || (c&0177)==0177) { |
1726 | (void) ttyoutput('^', tp); | |
1727 | c &= 0177; | |
1728 | if (c == 0177) | |
1729 | c = '?'; | |
2c6a4e11 | 1730 | #ifdef notdef |
4147b3f6 BJ |
1731 | else if (tp->t_flags&LCASE) |
1732 | c += 'a' - 1; | |
2c6a4e11 | 1733 | #endif |
4147b3f6 BJ |
1734 | else |
1735 | c += 'A' - 1; | |
1736 | } | |
1737 | } | |
becb115c | 1738 | (void) ttyoutput(c&0177, tp); |
4147b3f6 BJ |
1739 | } |
1740 | ||
4147b3f6 BJ |
1741 | /* |
1742 | * send string cp to tp | |
1743 | */ | |
1744 | ttyout(cp, tp) | |
4b72e2f9 SL |
1745 | register char *cp; |
1746 | register struct tty *tp; | |
4147b3f6 BJ |
1747 | { |
1748 | register char c; | |
1749 | ||
1750 | while (c = *cp++) | |
1751 | (void) ttyoutput(c, tp); | |
1752 | } | |
1753 | ||
1754 | ttwakeup(tp) | |
1755 | struct tty *tp; | |
1756 | { | |
1757 | ||
1758 | if (tp->t_rsel) { | |
1759 | selwakeup(tp->t_rsel, tp->t_state&TS_RCOLL); | |
1760 | tp->t_state &= ~TS_RCOLL; | |
1761 | tp->t_rsel = 0; | |
1762 | } | |
88a7a62a SL |
1763 | if (tp->t_state & TS_ASYNC) |
1764 | gsignal(tp->t_pgrp, SIGIO); | |
4147b3f6 BJ |
1765 | wakeup((caddr_t)&tp->t_rawq); |
1766 | } |