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 | * | |
232c0273 | 6 | * @(#)tty.c 7.19 (Berkeley) %G% |
da7c5cc6 | 7 | */ |
961945a8 | 8 | |
94368568 JB |
9 | #include "param.h" |
10 | #include "systm.h" | |
94368568 JB |
11 | #include "user.h" |
12 | #include "ioctl.h" | |
2c6a4e11 | 13 | #define TTYDEFCHARS |
52004850 | 14 | #include "tty.h" |
2c6a4e11 | 15 | #undef TTYDEFCHARS |
e39f9ea6 MT |
16 | #define TTYDEFCHARS |
17 | #include "ttydefaults.h" | |
18 | #undef TTYDEFCHARS | |
19 | #include "termios.h" | |
94368568 | 20 | #include "proc.h" |
94368568 JB |
21 | #include "file.h" |
22 | #include "conf.h" | |
fb1db32c | 23 | #include "dkstat.h" |
94368568 JB |
24 | #include "uio.h" |
25 | #include "kernel.h" | |
c4ec2128 | 26 | #include "vnode.h" |
2c6a4e11 | 27 | #include "syslog.h" |
d301d150 KM |
28 | |
29 | #include "machine/reg.h" | |
e39f9ea6 | 30 | #include "syslog.h" |
89dc6dfb | 31 | |
8bba2b8f RE |
32 | /* |
33 | * Table giving parity for characters and indicating | |
e39f9ea6 MT |
34 | * character classes to tty driver. The 8th bit |
35 | * indicates parity, the 7th bit indicates the character | |
36 | * is an alphameric or underscore (for ALTWERASE), and the | |
37 | * low 6 bits indicate delay type. If the low 6 bits are 0 | |
38 | * then the character needs no special processing on output. | |
8bba2b8f RE |
39 | */ |
40 | ||
41 | char partab[] = { | |
e39f9ea6 MT |
42 | 0001,0201,0201,0001,0201,0001,0001,0201, /* nul - bel */ |
43 | 0202,0004,0003,0201,0005,0206,0201,0001, /* bs - si */ | |
44 | 0201,0001,0001,0201,0001,0201,0201,0001, /* dle - etb */ | |
45 | 0001,0201,0201,0001,0201,0001,0001,0201, /* can - us */ | |
46 | 0200,0000,0000,0200,0000,0200,0200,0000, /* sp - ' */ | |
47 | 0000,0200,0200,0000,0200,0000,0000,0200, /* ( - / */ | |
48 | 0100,0300,0300,0100,0300,0100,0100,0300, /* 0 - 7 */ | |
49 | 0300,0100,0000,0200,0000,0200,0200,0000, /* 8 - ? */ | |
50 | 0200,0100,0100,0300,0100,0300,0300,0100, /* @ - G */ | |
51 | 0100,0300,0300,0100,0300,0100,0100,0300, /* H - O */ | |
52 | 0100,0300,0300,0100,0300,0100,0100,0300, /* P - W */ | |
53 | 0300,0100,0100,0200,0000,0200,0200,0300, /* X - _ */ | |
54 | 0000,0300,0300,0100,0300,0100,0100,0300, /* ` - g */ | |
55 | 0300,0100,0100,0300,0100,0300,0300,0100, /* h - o */ | |
56 | 0300,0100,0100,0300,0100,0300,0300,0100, /* p - w */ | |
57 | 0100,0300,0300,0000,0200,0000,0000,0201, /* x - del */ | |
8bba2b8f | 58 | /* |
e39f9ea6 | 59 | * meta chars |
8bba2b8f | 60 | */ |
e39f9ea6 MT |
61 | 0001,0201,0201,0001,0201,0001,0001,0201, /* nul - bel */ |
62 | 0202,0004,0003,0201,0005,0206,0201,0001, /* bs - si */ | |
63 | 0201,0001,0001,0201,0001,0201,0201,0001, /* dle - etb */ | |
64 | 0001,0201,0201,0001,0201,0001,0001,0201, /* can - us */ | |
65 | 0200,0000,0000,0200,0000,0200,0200,0000, /* sp - ' */ | |
66 | 0000,0200,0200,0000,0200,0000,0000,0200, /* ( - / */ | |
67 | 0100,0300,0300,0100,0300,0100,0100,0300, /* 0 - 7 */ | |
68 | 0300,0100,0000,0200,0000,0200,0200,0000, /* 8 - ? */ | |
69 | 0200,0100,0100,0300,0100,0300,0300,0100, /* @ - G */ | |
70 | 0100,0300,0300,0100,0300,0100,0100,0300, /* H - O */ | |
71 | 0100,0300,0300,0100,0300,0100,0100,0300, /* P - W */ | |
72 | 0300,0100,0100,0200,0000,0200,0200,0300, /* X - _ */ | |
73 | 0000,0300,0300,0100,0300,0100,0100,0300, /* ` - g */ | |
74 | 0300,0100,0100,0300,0100,0300,0300,0100, /* h - o */ | |
75 | 0300,0100,0100,0300,0100,0300,0300,0100, /* p - w */ | |
76 | 0100,0300,0300,0000,0200,0000,0000,0201, /* x - del */ | |
89dc6dfb BJ |
77 | }; |
78 | ||
adf4bc89 | 79 | extern struct tty *constty; /* temporary virtual console */ |
2c6a4e11 MT |
80 | extern char partab[], maptab[]; |
81 | ||
e39f9ea6 MT |
82 | /* |
83 | * Is 'c' a line delimiter ("break" character)? | |
84 | */ | |
85 | #define ttbreakc(c) (c == '\n' || CCEQ(cc[VEOF], c) || \ | |
86 | CCEQ(cc[VEOL], c) || CCEQ(cc[VEOL2], c)) | |
87 | ||
2c6a4e11 MT |
88 | /* |
89 | * Debugging aids | |
90 | */ | |
91 | #define dprintf if (tp->t_trace & TTRACE_IO)printf | |
92 | ||
93 | /* | |
94 | * Is 'c' a line delimiter ("break" character)? | |
95 | */ | |
96 | #define ttbreakc(c) (c == '\n' || CCEQ(cc[VEOF], c) || \ | |
97 | CCEQ(cc[VEOL], c) || CCEQ(cc[VEOL2], c)) | |
adf4bc89 | 98 | |
89dc6dfb | 99 | ttychars(tp) |
becb115c | 100 | struct tty *tp; |
89dc6dfb | 101 | { |
2c6a4e11 | 102 | bcopy(ttydefchars, tp->t_cc, sizeof(ttydefchars)); |
89dc6dfb BJ |
103 | } |
104 | ||
105 | /* | |
2c6a4e11 | 106 | * |
50e2732b | 107 | * Wait for output to drain, then flush input waiting. |
89dc6dfb | 108 | */ |
88a7a62a | 109 | ttywflush(tp) |
66ad69d6 | 110 | struct tty *tp; |
89dc6dfb BJ |
111 | { |
112 | ||
88a7a62a SL |
113 | ttywait(tp); |
114 | ttyflush(tp, FREAD); | |
115 | } | |
116 | ||
e39f9ea6 MT |
117 | /* |
118 | * Wait for output to drain. | |
119 | */ | |
2c6a4e11 MT |
120 | /* |
121 | * Wait for output to drain. | |
122 | */ | |
88a7a62a SL |
123 | ttywait(tp) |
124 | register struct tty *tp; | |
125 | { | |
66ad69d6 | 126 | int s = spltty(); |
88a7a62a | 127 | |
5de287d9 | 128 | while ((tp->t_outq.c_cc || tp->t_state&TS_BUSY) && |
66ad69d6 MT |
129 | (tp->t_state&TS_CARR_ON || tp->t_cflag&CLOCAL) && |
130 | tp->t_oproc) { | |
50e2732b | 131 | (*tp->t_oproc)(tp); |
941944c9 | 132 | tp->t_state |= TS_ASLEEP; |
50e2732b BJ |
133 | sleep((caddr_t)&tp->t_outq, TTOPRI); |
134 | } | |
875a1e2c | 135 | splx(s); |
89dc6dfb BJ |
136 | } |
137 | ||
138 | /* | |
becb115c | 139 | * Flush all TTY queues |
89dc6dfb | 140 | */ |
88a7a62a | 141 | ttyflush(tp, rw) |
4b72e2f9 | 142 | register struct tty *tp; |
89dc6dfb | 143 | { |
50e2732b BJ |
144 | register s; |
145 | ||
4f3a716e | 146 | s = spltty(); |
50e2732b BJ |
147 | if (rw & FREAD) { |
148 | while (getc(&tp->t_canq) >= 0) | |
149 | ; | |
66ad69d6 | 150 | ttwakeup(tp); |
50e2732b BJ |
151 | } |
152 | if (rw & FWRITE) { | |
66ad69d6 | 153 | wakeup((caddr_t)&tp->t_outq); /* XXX? what about selwakeup? */ |
941944c9 | 154 | tp->t_state &= ~TS_TTSTOP; |
39697bd8 | 155 | (*cdevsw[major(tp->t_dev)].d_stop)(tp, rw); |
50e2732b BJ |
156 | while (getc(&tp->t_outq) >= 0) |
157 | ; | |
158 | } | |
159 | if (rw & FREAD) { | |
160 | while (getc(&tp->t_rawq) >= 0) | |
161 | ; | |
becb115c | 162 | tp->t_rocount = 0; |
50e2732b | 163 | tp->t_rocol = 0; |
becb115c | 164 | tp->t_state &= ~TS_LOCAL; |
50e2732b BJ |
165 | } |
166 | splx(s); | |
89dc6dfb BJ |
167 | } |
168 | ||
50e2732b BJ |
169 | /* |
170 | * Send stop character on input overflow. | |
171 | */ | |
172 | ttyblock(tp) | |
4b72e2f9 | 173 | register struct tty *tp; |
89dc6dfb | 174 | { |
50e2732b | 175 | register x; |
becb115c | 176 | |
50e2732b BJ |
177 | x = tp->t_rawq.c_cc + tp->t_canq.c_cc; |
178 | if (tp->t_rawq.c_cc > TTYHOG) { | |
88a7a62a | 179 | ttyflush(tp, FREAD|FWRITE); |
941944c9 | 180 | tp->t_state &= ~TS_TBLOCK; |
50e2732b | 181 | } |
600d5712 MK |
182 | /* |
183 | * Block further input iff: | |
184 | * Current input > threshold AND input is available to user program | |
185 | */ | |
28b2d854 | 186 | if (x >= TTYHOG/2 && |
2c6a4e11 MT |
187 | (!(tp->t_lflag&ICANON)) || (tp->t_canq.c_cc > 0) && |
188 | tp->t_cc[VSTOP] != POSIX_V_DISABLE) { | |
189 | if (putc(tp->t_cc[VSTOP], &tp->t_outq)==0) { | |
600d5712 MK |
190 | tp->t_state |= TS_TBLOCK; |
191 | ttstart(tp); | |
192 | } | |
50e2732b | 193 | } |
89dc6dfb BJ |
194 | } |
195 | ||
101ba270 | 196 | /* |
50e2732b BJ |
197 | * Restart typewriter output following a delay |
198 | * timeout. | |
199 | * The name of the routine is passed to the timeout | |
200 | * subroutine and it is called during a clock interrupt. | |
101ba270 | 201 | */ |
50e2732b | 202 | ttrstrt(tp) |
66ad69d6 | 203 | struct tty *tp; |
101ba270 BJ |
204 | { |
205 | ||
becb115c SL |
206 | if (tp == 0) |
207 | panic("ttrstrt"); | |
941944c9 | 208 | tp->t_state &= ~TS_TIMEOUT; |
50e2732b | 209 | ttstart(tp); |
101ba270 BJ |
210 | } |
211 | ||
89dc6dfb | 212 | /* |
50e2732b BJ |
213 | * Start output on the typewriter. It is used from the top half |
214 | * after some characters have been put on the output queue, | |
215 | * from the interrupt routine to transmit the next | |
216 | * character, and after a timeout has finished. | |
89dc6dfb | 217 | */ |
50e2732b | 218 | ttstart(tp) |
66ad69d6 | 219 | struct tty *tp; |
89dc6dfb | 220 | { |
8062c8a7 | 221 | |
b482b2c8 | 222 | if (tp->t_oproc) /* kludge for pty */ |
50e2732b | 223 | (*tp->t_oproc)(tp); |
89dc6dfb BJ |
224 | } |
225 | ||
226 | /* | |
50e2732b | 227 | * Common code for tty ioctls. |
89dc6dfb | 228 | */ |
49c84d3f | 229 | /*ARGSUSED*/ |
4b72e2f9 SL |
230 | ttioctl(tp, com, data, flag) |
231 | register struct tty *tp; | |
232 | caddr_t data; | |
89dc6dfb | 233 | { |
89dc6dfb | 234 | extern int nldisp; |
2c6a4e11 | 235 | int soft; |
849cbd39 | 236 | int s, error; |
89dc6dfb | 237 | |
50e2732b BJ |
238 | /* |
239 | * If the ioctl involves modification, | |
4f3a716e | 240 | * hang if in the background. |
50e2732b | 241 | */ |
4b72e2f9 | 242 | switch (com) { |
50e2732b | 243 | |
2c6a4e11 | 244 | case TIOCSETD: |
50e2732b | 245 | case TIOCFLUSH: |
8203fe05 | 246 | case TIOCSTI: |
f9eea644 | 247 | case TIOCSWINSZ: |
2c6a4e11 MT |
248 | case TIOCSETA: |
249 | case TIOCSETAW: | |
250 | case TIOCSETAF: | |
52004850 | 251 | /**** these get removed **** |
2c6a4e11 MT |
252 | case TIOCSETAS: |
253 | case TIOCSETAWS: | |
254 | case TIOCSETAFS: | |
52004850 | 255 | /***************************/ |
232c0273 | 256 | while (isbackground(u.u_procp, tp) && |
e39f9ea6 | 257 | u.u_procp->p_pgrp->pg_jobc && |
50e2732b | 258 | (u.u_procp->p_flag&SVFORK) == 0 && |
52c041cd MK |
259 | !(u.u_procp->p_sigignore & sigmask(SIGTTOU)) && |
260 | !(u.u_procp->p_sigmask & sigmask(SIGTTOU))) { | |
e39f9ea6 | 261 | pgsignal(u.u_procp->p_pgrp, SIGTTOU); |
50e2732b BJ |
262 | sleep((caddr_t)&lbolt, TTOPRI); |
263 | } | |
264 | break; | |
265 | } | |
266 | ||
becb115c SL |
267 | /* |
268 | * Process the ioctl. | |
269 | */ | |
4b72e2f9 | 270 | switch (com) { |
89dc6dfb | 271 | |
fc6972ae | 272 | /* get discipline number */ |
89dc6dfb | 273 | case TIOCGETD: |
4b72e2f9 | 274 | *(int *)data = tp->t_line; |
89dc6dfb BJ |
275 | break; |
276 | ||
fc6972ae | 277 | /* set line discipline */ |
4b72e2f9 SL |
278 | case TIOCSETD: { |
279 | register int t = *(int *)data; | |
2c6a4e11 | 280 | dev_t dev = tp->t_dev; |
e39f9ea6 | 281 | dev_t dev = tp->t_dev; |
becb115c | 282 | int error = 0; |
4b72e2f9 | 283 | |
e39f9ea6 | 284 | if ((unsigned)t >= nldisp) |
4a003df3 | 285 | return (ENXIO); |
2eaeef4d MK |
286 | if (t != tp->t_line) { |
287 | s = spltty(); | |
288 | (*linesw[tp->t_line].l_close)(tp); | |
289 | error = (*linesw[t].l_open)(dev, tp); | |
290 | if (error) { | |
2c6a4e11 | 291 | (void)(*linesw[tp->t_line].l_open)(dev, tp); |
2eaeef4d MK |
292 | splx(s); |
293 | return (error); | |
294 | } | |
295 | tp->t_line = t; | |
4a003df3 | 296 | splx(s); |
4a003df3 | 297 | } |
2c6a4e11 MT |
298 | if (tp->t_trace & TTRACE_STATE) |
299 | ttytrace(com, tp); | |
89dc6dfb | 300 | break; |
4b72e2f9 | 301 | } |
89dc6dfb | 302 | |
fc6972ae | 303 | /* prevent more opens on channel */ |
152c2598 BJ |
304 | case TIOCEXCL: |
305 | tp->t_state |= TS_XCLUDE; | |
306 | break; | |
307 | ||
308 | case TIOCNXCL: | |
309 | tp->t_state &= ~TS_XCLUDE; | |
310 | break; | |
311 | ||
89dc6dfb | 312 | case TIOCHPCL: |
2c6a4e11 | 313 | tp->t_cflag |= HUPCL; |
89dc6dfb BJ |
314 | break; |
315 | ||
7d973a4d | 316 | case TIOCFLUSH: { |
4b72e2f9 SL |
317 | register int flags = *(int *)data; |
318 | ||
319 | if (flags == 0) | |
7d973a4d | 320 | flags = FREAD|FWRITE; |
4b72e2f9 SL |
321 | else |
322 | flags &= FREAD|FWRITE; | |
88a7a62a | 323 | ttyflush(tp, flags); |
89dc6dfb | 324 | break; |
4568c08e | 325 | } |
89dc6dfb | 326 | |
66ad69d6 MT |
327 | case FIOASYNC: |
328 | if (*(int *)data) | |
329 | tp->t_state |= TS_ASYNC; | |
330 | else | |
331 | tp->t_state &= ~TS_ASYNC; | |
332 | break; | |
333 | ||
334 | case FIONBIO: | |
335 | break; /* XXX remove */ | |
336 | ||
fc6972ae | 337 | /* return number of characters immediately available */ |
4b72e2f9 SL |
338 | case FIONREAD: |
339 | *(off_t *)data = ttnread(tp); | |
8062c8a7 | 340 | break; |
8062c8a7 | 341 | |
b968e450 SL |
342 | case TIOCOUTQ: |
343 | *(int *)data = tp->t_outq.c_cc; | |
344 | break; | |
345 | ||
a8d3bf7f | 346 | case TIOCSTOP: |
4f3a716e | 347 | s = spltty(); |
becb115c | 348 | if ((tp->t_state&TS_TTSTOP) == 0) { |
bfcf09ee BJ |
349 | tp->t_state |= TS_TTSTOP; |
350 | (*cdevsw[major(tp->t_dev)].d_stop)(tp, 0); | |
351 | } | |
4b72e2f9 | 352 | splx(s); |
bfcf09ee BJ |
353 | break; |
354 | ||
a8d3bf7f | 355 | case TIOCSTART: |
4f3a716e | 356 | s = spltty(); |
2c6a4e11 | 357 | if ((tp->t_state&TS_TTSTOP) || (tp->t_lflag&FLUSHO)) { |
bfcf09ee | 358 | tp->t_state &= ~TS_TTSTOP; |
2c6a4e11 | 359 | tp->t_lflag &= ~FLUSHO; |
bfcf09ee BJ |
360 | ttstart(tp); |
361 | } | |
4b72e2f9 | 362 | splx(s); |
bfcf09ee BJ |
363 | break; |
364 | ||
8203fe05 SL |
365 | /* |
366 | * Simulate typing of a character at the terminal. | |
367 | */ | |
368 | case TIOCSTI: | |
477d62ec KM |
369 | if (u.u_uid && (flag & FREAD) == 0) |
370 | return (EPERM); | |
232c0273 | 371 | if (u.u_uid && !isctty(u.u_procp, tp)) |
8203fe05 | 372 | return (EACCES); |
becb115c | 373 | (*linesw[tp->t_line].l_rint)(*(char *)data, tp); |
8203fe05 SL |
374 | break; |
375 | ||
2c6a4e11 MT |
376 | case TIOCGETA: { |
377 | struct termios *t = (struct termios *)data; | |
378 | bcopy(&tp->t_termio, t, sizeof(struct termios)); | |
379 | if (tp->t_trace & TTRACE_STATE) | |
380 | ttytrace(com, tp); | |
381 | break; | |
382 | } | |
383 | ||
2c6a4e11 MT |
384 | if (com == TIOCSETAF || com == TIOCSETAFS) |
385 | ttywflush(tp); | |
386 | else { | |
387 | if (com == TIOCSETAW || com == TIOCSETAWS) | |
388 | ttywait(tp); | |
389 | if ((t->c_lflag&ICANON) != (tp->t_lflag&ICANON)) | |
390 | if (t->c_lflag&ICANON) { | |
391 | tp->t_lflag |= PENDIN; | |
392 | ttwakeup(tp); | |
393 | } | |
394 | else { | |
395 | struct clist tq; | |
396 | ||
397 | catq(&tp->t_rawq, &tp->t_canq); | |
398 | tq = tp->t_rawq; | |
399 | tp->t_rawq = tp->t_canq; | |
400 | tp->t_canq = tq; | |
401 | } | |
88a7a62a | 402 | } |
2c6a4e11 MT |
403 | tp->t_iflag = t->c_iflag; |
404 | tp->t_oflag = t->c_oflag; | |
405 | tp->t_lflag = t->c_lflag; | |
406 | bcopy(t->c_cc, tp->t_cc, sizeof(t->c_cc)); | |
407 | if (!soft) { | |
408 | tp->t_cflag = t->c_cflag; | |
409 | tp->t_ispeed = t->c_ispeed; | |
410 | tp->t_ospeed = t->c_ospeed; | |
88a7a62a | 411 | } |
e39f9ea6 MT |
412 | tp->t_iflag = t->c_iflag; |
413 | tp->t_oflag = t->c_oflag; | |
414 | tp->t_lflag = t->c_lflag; | |
415 | bcopy(t->c_cc, tp->t_cc, sizeof(t->c_cc)); | |
88a7a62a | 416 | splx(s); |
2c6a4e11 MT |
417 | if (tp->t_trace & TTRACE_STATE) |
418 | ttytrace(com, tp); | |
88a7a62a SL |
419 | break; |
420 | } | |
421 | ||
4f3a716e | 422 | /* |
e39f9ea6 | 423 | * Set terminal process group. |
4f3a716e | 424 | */ |
245aeefa | 425 | case TIOCSPGRP: { |
e39f9ea6 MT |
426 | register struct proc *p = u.u_procp; |
427 | register struct pgrp *pgrp = pgfind(*(int *)data); | |
428 | ||
232c0273 MT |
429 | if (!isctty(p, tp)) |
430 | return (ENOTTY); | |
431 | else if (pgrp->pg_session != p->p_session) | |
432 | return (EPERM); | |
433 | tp->t_pgrp = pgrp; | |
88a7a62a | 434 | break; |
245aeefa | 435 | } |
88a7a62a SL |
436 | |
437 | case TIOCGPGRP: | |
232c0273 MT |
438 | if (!isctty(u.u_procp, tp)) |
439 | return (ENOTTY); | |
440 | *(int *)data = tp->t_pgrp ? tp->t_pgrp->pg_id : 0; | |
88a7a62a SL |
441 | break; |
442 | ||
f9eea644 | 443 | case TIOCSWINSZ: |
245aeefa JB |
444 | if (bcmp((caddr_t)&tp->t_winsize, data, |
445 | sizeof (struct winsize))) { | |
f9eea644 | 446 | tp->t_winsize = *(struct winsize *)data; |
232c0273 | 447 | pgsignal(tp->t_pgrp, SIGWINCH); |
f9eea644 JB |
448 | } |
449 | break; | |
450 | ||
451 | case TIOCGWINSZ: | |
452 | *(struct winsize *)data = tp->t_winsize; | |
453 | break; | |
454 | ||
adf4bc89 MK |
455 | case TIOCCONS: |
456 | if (*(int *)data) { | |
457 | if (constty != NULL) | |
458 | return (EBUSY); | |
459 | #ifndef UCONSOLE | |
849cbd39 KM |
460 | if (error = suser(u.u_cred, &u.u_acflag)) |
461 | return (error); | |
adf4bc89 MK |
462 | #endif |
463 | constty = tp; | |
464 | } else if (tp == constty) | |
1eebc1a7 | 465 | constty = NULL; |
adf4bc89 MK |
466 | break; |
467 | ||
e39f9ea6 MT |
468 | #ifdef COMPAT_43 |
469 | case TIOCGETP: | |
470 | case TIOCSETP: | |
471 | case TIOCSETN: | |
472 | case TIOCGETC: | |
473 | case TIOCSETC: | |
474 | case TIOCSLTC: | |
475 | case TIOCGLTC: | |
476 | case TIOCLBIS: | |
477 | case TIOCLBIC: | |
478 | case TIOCLSET: | |
479 | case TIOCLGET: | |
52004850 MT |
480 | case OTIOCGETD: |
481 | case OTIOCSETD: | |
e39f9ea6 MT |
482 | return(ttcompat(tp, com, data, flag)); |
483 | #endif | |
484 | ||
2c6a4e11 MT |
485 | /* allow old ioctls for now */ |
486 | case TIOCGETP: | |
487 | case TIOCSETP: | |
488 | case TIOCSETN: | |
489 | case TIOCGETC: | |
490 | case TIOCSETC: | |
491 | case TIOCSLTC: | |
492 | case TIOCGLTC: | |
493 | case TIOCLBIS: | |
494 | case TIOCLBIC: | |
495 | case TIOCLSET: | |
496 | case TIOCLGET: | |
497 | return(ottioctl(tp, com, data, flag)); | |
498 | ||
89dc6dfb | 499 | default: |
fc6972ae | 500 | return (-1); |
89dc6dfb | 501 | } |
fc6972ae | 502 | return (0); |
89dc6dfb | 503 | } |
e1d74936 | 504 | |
2c6a4e11 MT |
505 | /* |
506 | * DEBUG - to be removed | |
507 | */ | |
508 | ttytrace(ioc, tp) | |
509 | struct tty *tp; | |
510 | { | |
511 | register u_char *cc = tp->t_cc; | |
512 | char comm[MAXCOMLEN+1]; | |
513 | static int seq = 0; | |
514 | ||
515 | bcopy(u.u_comm, comm, MAXCOMLEN+1); | |
516 | comm[MAXCOMLEN] = '\0'; | |
517 | ||
518 | /* trace changes to line disciplines */ | |
519 | if (ioc == TIOCSETD) { | |
520 | log(LOG_LOCAL4|LOG_DEBUG, "%s:%x:%x:%x:%x\n", | |
521 | comm, ioc, u.u_procp->p_pid, tp->t_dev, tp->t_line); | |
522 | return; | |
523 | } | |
524 | ||
525 | /* | |
526 | * format for the trace record is: | |
527 | * | |
528 | * u_comm:ioctl:pid:dev_t:ldisc:iflag:oflag:lflag:cflag:ispeed: | |
529 | * ospeed:cc's...:seq | |
530 | * | |
531 | * u_comm is a string and all other values are hex. "cc's..." | |
532 | * stands for control chars 0 through NCC-1. seq is a sequence # | |
533 | * to force syslogd to log every entry (rather than hold them to | |
534 | * print "last message repeated...". | |
535 | */ | |
536 | 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", | |
537 | comm, ioc, u.u_procp->p_pid, tp->t_dev, tp->t_line, | |
538 | tp->t_iflag, tp->t_oflag, tp->t_lflag, tp->t_cflag, | |
539 | tp->t_ispeed, tp->t_ospeed, cc[0], cc[1], cc[2], cc[3], | |
540 | cc[4], cc[5], cc[6], cc[7], cc[8], cc[9], cc[10], cc[11], | |
541 | cc[12], cc[13], cc[14], cc[15], cc[16], cc[17], cc[18], | |
542 | cc[19], seq++); | |
543 | } | |
544 | ||
e1d74936 BJ |
545 | ttnread(tp) |
546 | struct tty *tp; | |
547 | { | |
548 | int nread = 0; | |
549 | ||
2c6a4e11 | 550 | if (tp->t_lflag & PENDIN) |
e1d74936 BJ |
551 | ttypend(tp); |
552 | nread = tp->t_canq.c_cc; | |
2c6a4e11 | 553 | if (tp->t_lflag & ICANON == 0) |
e1d74936 BJ |
554 | nread += tp->t_rawq.c_cc; |
555 | return (nread); | |
556 | } | |
557 | ||
941944c9 | 558 | ttselect(dev, rw) |
e1d74936 | 559 | dev_t dev; |
941944c9 | 560 | int rw; |
e1d74936 BJ |
561 | { |
562 | register struct tty *tp = &cdevsw[major(dev)].d_ttys[minor(dev)]; | |
563 | int nread; | |
4f3a716e | 564 | int s = spltty(); |
e1d74936 | 565 | |
941944c9 | 566 | switch (rw) { |
e1d74936 BJ |
567 | |
568 | case FREAD: | |
569 | nread = ttnread(tp); | |
66ad69d6 MT |
570 | if (nread > 0 || |
571 | (!(tp->t_cflag&CLOCAL) && !(tp->t_state&TS_CARR_ON))) | |
941944c9 | 572 | goto win; |
89b8a44c | 573 | if (tp->t_rsel && tp->t_rsel->p_wchan == (caddr_t)&selwait) |
941944c9 | 574 | tp->t_state |= TS_RCOLL; |
e1d74936 BJ |
575 | else |
576 | tp->t_rsel = u.u_procp; | |
941944c9 | 577 | break; |
e1d74936 | 578 | |
941944c9 | 579 | case FWRITE: |
e39f9ea6 | 580 | if (tp->t_outq.c_cc <= tp->t_lowat) |
941944c9 | 581 | goto win; |
941944c9 BJ |
582 | if (tp->t_wsel && tp->t_wsel->p_wchan == (caddr_t)&selwait) |
583 | tp->t_state |= TS_WCOLL; | |
584 | else | |
585 | tp->t_wsel = u.u_procp; | |
586 | break; | |
e1d74936 | 587 | } |
941944c9 BJ |
588 | splx(s); |
589 | return (0); | |
590 | win: | |
591 | splx(s); | |
592 | return (1); | |
e1d74936 | 593 | } |
8bba2b8f | 594 | |
4147b3f6 | 595 | /* |
605d7712 | 596 | * Initial open of tty, or (re)entry to line discipline. |
4147b3f6 BJ |
597 | */ |
598 | ttyopen(dev, tp) | |
4b72e2f9 SL |
599 | dev_t dev; |
600 | register struct tty *tp; | |
4147b3f6 | 601 | { |
4147b3f6 | 602 | |
4147b3f6 | 603 | tp->t_dev = dev; |
e39f9ea6 | 604 | |
4147b3f6 | 605 | tp->t_state &= ~TS_WOPEN; |
4f3a716e MK |
606 | if ((tp->t_state & TS_ISOPEN) == 0) { |
607 | tp->t_state |= TS_ISOPEN; | |
f9eea644 | 608 | bzero((caddr_t)&tp->t_winsize, sizeof(tp->t_winsize)); |
2c6a4e11 MT |
609 | /* |
610 | * CHANGE: used to do a ttywflush() if it was the | |
611 | * old (old) line discipline. | |
612 | */ | |
4f3a716e | 613 | } |
fc6972ae | 614 | return (0); |
4147b3f6 BJ |
615 | } |
616 | ||
605d7712 MK |
617 | /* |
618 | * "close" a line discipline | |
619 | */ | |
620 | ttylclose(tp) | |
621 | register struct tty *tp; | |
622 | { | |
623 | ||
624 | ttywflush(tp); | |
605d7712 MK |
625 | } |
626 | ||
4147b3f6 BJ |
627 | /* |
628 | * clean tp on last close | |
629 | */ | |
630 | ttyclose(tp) | |
4b72e2f9 | 631 | register struct tty *tp; |
4147b3f6 | 632 | { |
adf4bc89 MK |
633 | if (constty == tp) |
634 | constty = NULL; | |
605d7712 | 635 | ttyflush(tp, FREAD|FWRITE); |
232c0273 MT |
636 | tp->t_session = NULL; |
637 | tp->t_pgrp = NULL; | |
4147b3f6 BJ |
638 | tp->t_state = 0; |
639 | } | |
640 | ||
605d7712 MK |
641 | /* |
642 | * Handle modem control transition on a tty. | |
643 | * Flag indicates new state of carrier. | |
644 | * Returns 0 if the line should be turned off, otherwise 1. | |
645 | */ | |
646 | ttymodem(tp, flag) | |
647 | register struct tty *tp; | |
648 | { | |
649 | ||
2c6a4e11 | 650 | if ((tp->t_state&TS_WOPEN) == 0 && (tp->t_lflag & MDMBUF)) { |
605d7712 MK |
651 | /* |
652 | * MDMBUF: do flow control according to carrier flag | |
653 | */ | |
654 | if (flag) { | |
655 | tp->t_state &= ~TS_TTSTOP; | |
656 | ttstart(tp); | |
657 | } else if ((tp->t_state&TS_TTSTOP) == 0) { | |
658 | tp->t_state |= TS_TTSTOP; | |
659 | (*cdevsw[major(tp->t_dev)].d_stop)(tp, 0); | |
660 | } | |
661 | } else if (flag == 0) { | |
662 | /* | |
663 | * Lost carrier. | |
664 | */ | |
665 | tp->t_state &= ~TS_CARR_ON; | |
666 | if (tp->t_state & TS_ISOPEN) { | |
2c6a4e11 | 667 | if ((tp->t_lflag & NOHANG) == 0) { |
232c0273 MT |
668 | pgsignal(tp->t_pgrp, SIGHUP); |
669 | pgsignal(tp->t_pgrp, SIGCONT); | |
605d7712 MK |
670 | ttyflush(tp, FREAD|FWRITE); |
671 | return (0); | |
672 | } | |
673 | } | |
674 | } else { | |
675 | /* | |
676 | * Carrier now on. | |
677 | */ | |
678 | tp->t_state |= TS_CARR_ON; | |
66ad69d6 | 679 | ttwakeup(tp); |
605d7712 MK |
680 | } |
681 | return (1); | |
682 | } | |
683 | ||
e3f2038d MK |
684 | /* |
685 | * Default modem control routine (for other line disciplines). | |
686 | * Return argument flag, to turn off device on carrier drop. | |
687 | */ | |
2f54b5e8 MK |
688 | nullmodem(tp, flag) |
689 | register struct tty *tp; | |
e3f2038d MK |
690 | int flag; |
691 | { | |
692 | ||
693 | if (flag) | |
694 | tp->t_state |= TS_CARR_ON; | |
52004850 | 695 | else { |
e3f2038d | 696 | tp->t_state &= ~TS_CARR_ON; |
52004850 | 697 | if ((tp->t_lflag & NOHANG) == 0) |
232c0273 | 698 | pgsignal(tp->t_pgrp, SIGHUP); |
52004850 | 699 | } |
e3f2038d MK |
700 | return (flag); |
701 | } | |
702 | ||
4147b3f6 BJ |
703 | /* |
704 | * reinput pending characters after state switch | |
4f3a716e | 705 | * call at spltty(). |
4147b3f6 BJ |
706 | */ |
707 | ttypend(tp) | |
4b72e2f9 | 708 | register struct tty *tp; |
4147b3f6 BJ |
709 | { |
710 | struct clist tq; | |
711 | register c; | |
712 | ||
2c6a4e11 | 713 | tp->t_lflag &= ~PENDIN; |
becb115c | 714 | tp->t_state |= TS_TYPEN; |
4147b3f6 BJ |
715 | tq = tp->t_rawq; |
716 | tp->t_rawq.c_cc = 0; | |
717 | tp->t_rawq.c_cf = tp->t_rawq.c_cl = 0; | |
718 | while ((c = getc(&tq)) >= 0) | |
719 | ttyinput(c, tp); | |
becb115c | 720 | tp->t_state &= ~TS_TYPEN; |
4147b3f6 BJ |
721 | } |
722 | ||
723 | /* | |
e39f9ea6 | 724 | * |
2c6a4e11 | 725 | * |
becb115c SL |
726 | * Place a character on raw TTY input queue, |
727 | * putting in delimiters and waking up top | |
728 | * half as needed. Also echo if required. | |
729 | * The arguments are the character and the | |
730 | * appropriate tty structure. | |
4147b3f6 BJ |
731 | */ |
732 | ttyinput(c, tp) | |
4b72e2f9 SL |
733 | register c; |
734 | register struct tty *tp; | |
4147b3f6 | 735 | { |
2c6a4e11 MT |
736 | register int iflag = tp->t_iflag; |
737 | register int lflag = tp->t_lflag; | |
738 | register u_char *cc = tp->t_cc; | |
739 | int i, err; | |
4147b3f6 | 740 | |
becb115c SL |
741 | /* |
742 | * If input is pending take it first. | |
743 | */ | |
2c6a4e11 | 744 | if (lflag&PENDIN) |
4147b3f6 | 745 | ttypend(tp); |
e39f9ea6 MT |
746 | /* |
747 | * Gather stats. | |
748 | */ | |
2c6a4e11 | 749 | |
4147b3f6 | 750 | tk_nin++; |
e39f9ea6 MT |
751 | if (lflag&ICANON) { |
752 | tk_cancc++; | |
753 | tp->t_cancc++; | |
754 | } else { | |
755 | tk_rawcc++; | |
756 | tp->t_rawcc++; | |
757 | } | |
becb115c | 758 | /* |
2c6a4e11 | 759 | * Handle exceptional conditions (break, parity, framing). |
becb115c | 760 | */ |
2c6a4e11 MT |
761 | if (err = (c&TTY_ERRORMASK)) { |
762 | c &= TTY_CHARMASK; | |
763 | if (err&TTY_FE && !c) { /* break */ | |
764 | if (iflag&IGNBRK) | |
765 | goto endcase; | |
766 | else if (iflag&BRKINT && lflag&ISIG && | |
767 | (cc[VINTR] != POSIX_V_DISABLE)) | |
768 | c = cc[VINTR]; | |
769 | else | |
770 | c = 0; | |
771 | } else if ((err&TTY_PE && iflag&INPCK) || err&TTY_FE) { | |
772 | if (iflag&IGNPAR) | |
773 | goto endcase; | |
774 | else if (iflag&PARMRK) { | |
775 | ttyinput(0377, tp); | |
776 | ttyinput(0, tp); | |
777 | } else | |
778 | c = 0; | |
4147b3f6 | 779 | } |
becb115c | 780 | } |
2c6a4e11 MT |
781 | dprintf("<%o>\n", c); |
782 | ||
783 | /* | |
784 | * In tandem mode, check high water mark. | |
785 | */ | |
786 | if (iflag&IXOFF) | |
787 | ttyblock(tp); | |
788 | ||
becb115c | 789 | /* |
e39f9ea6 | 790 | * In tandem mode, check high water mark. |
becb115c | 791 | */ |
2c6a4e11 | 792 | if ((tp->t_state&TS_TYPEN) == 0 && (iflag&ISTRIP)) |
becb115c SL |
793 | c &= 0177; |
794 | /* | |
795 | * Check for literal nexting very first | |
796 | */ | |
797 | if (tp->t_state&TS_LNCH) { | |
e39f9ea6 | 798 | c |= TTY_QUOTE; |
becb115c SL |
799 | tp->t_state &= ~TS_LNCH; |
800 | } | |
becb115c SL |
801 | /* |
802 | * Scan for special characters. This code | |
803 | * is really just a big case statement with | |
804 | * non-constant cases. The bottom of the | |
805 | * case statement is labeled ``endcase'', so goto | |
806 | * it after a case match, or similar. | |
807 | */ | |
2c6a4e11 MT |
808 | |
809 | /* | |
810 | * Extensions to POSIX input modes which aren't controlled | |
811 | * by ICANON, ISIG, or IXON. | |
812 | */ | |
813 | if (iflag&IEXTEN) { | |
814 | if (CCEQ(cc[VLNEXT],c) && (iflag&ISTRIP)) { | |
815 | if (lflag&ECHO) | |
816 | ttyout("^\b", tp); /*XXX - presumes too much */ | |
becb115c SL |
817 | tp->t_state |= TS_LNCH; |
818 | goto endcase; | |
819 | } | |
2c6a4e11 MT |
820 | if (CCEQ(cc[VFLUSHO],c)) { |
821 | if (lflag&FLUSHO) | |
822 | tp->t_lflag &= ~FLUSHO; | |
4147b3f6 | 823 | else { |
88a7a62a | 824 | ttyflush(tp, FWRITE); |
4147b3f6 | 825 | ttyecho(c, tp); |
becb115c | 826 | if (tp->t_rawq.c_cc + tp->t_canq.c_cc) |
4147b3f6 | 827 | ttyretype(tp); |
2c6a4e11 | 828 | tp->t_lflag |= FLUSHO; |
4147b3f6 | 829 | } |
becb115c SL |
830 | goto startoutput; |
831 | } | |
2c6a4e11 MT |
832 | } |
833 | ||
834 | /* | |
835 | * Signals. | |
836 | */ | |
837 | if (lflag&ISIG) { | |
838 | if (CCEQ(cc[VINTR], c) || CCEQ(cc[VQUIT], c)) { | |
839 | if ((lflag&NOFLSH) == 0) | |
840 | ttyflush(tp, FREAD|FWRITE); | |
841 | ttyecho(c, tp); | |
842 | gsignal(tp->t_pgrp, CCEQ(cc[VINTR],c) ? | |
843 | SIGINT : SIGQUIT); | |
844 | goto endcase; | |
845 | } | |
846 | if (CCEQ(cc[VSUSP],c)) { | |
847 | if ((lflag&NOFLSH) == 0) | |
88a7a62a | 848 | ttyflush(tp, FREAD); |
4147b3f6 | 849 | ttyecho(c, tp); |
232c0273 | 850 | pgsignal(tp->t_pgrp, SIGTSTP); |
becb115c SL |
851 | goto endcase; |
852 | } | |
52004850 MT |
853 | if (CCEQ(cc[VINFO],c)) { |
854 | ttyinfo(tp); | |
855 | goto endcase; | |
856 | } | |
becb115c | 857 | } |
becb115c SL |
858 | /* |
859 | * Handle start/stop characters. | |
860 | */ | |
2c6a4e11 MT |
861 | if (iflag&IXON) { |
862 | if (CCEQ(cc[VSTOP],c)) { | |
863 | if ((tp->t_state&TS_TTSTOP) == 0) { | |
864 | tp->t_state |= TS_TTSTOP; | |
865 | (*cdevsw[major(tp->t_dev)].d_stop)(tp, 0); | |
866 | return; | |
867 | } | |
868 | if (!CCEQ(cc[VSTART], c)) | |
869 | return; | |
870 | /* | |
871 | * if VSTART == VSTOP we toggle | |
872 | */ | |
873 | goto endcase; | |
becb115c | 874 | } |
2c6a4e11 MT |
875 | if (CCEQ(cc[VSTART], c)) |
876 | goto restartoutput; | |
becb115c | 877 | } |
becb115c | 878 | /* |
2c6a4e11 | 879 | * IGNCR, ICRNL, & INLCR |
becb115c | 880 | */ |
2c6a4e11 MT |
881 | if (c == '\r') { |
882 | if (iflag&IGNCR) | |
883 | goto endcase; | |
884 | else if (iflag&ICRNL) | |
885 | c = '\n'; | |
becb115c | 886 | } |
2c6a4e11 MT |
887 | else if (c == '\n' && iflag&INLCR) |
888 | c = '\r'; | |
e39f9ea6 MT |
889 | else if (c == '\n' && iflag&INLCR) |
890 | c = '\r'; | |
becb115c | 891 | /* |
2c6a4e11 | 892 | * Non canonical mode, don't process line editing |
becb115c | 893 | * characters; check high water mark for wakeup. |
2c6a4e11 | 894 | * |
e39f9ea6 | 895 | * |
becb115c | 896 | */ |
2c6a4e11 | 897 | if (!(lflag&ICANON)) { |
becb115c | 898 | if (tp->t_rawq.c_cc > TTYHOG) { |
2c6a4e11 | 899 | if (iflag&IMAXBEL) { |
e39f9ea6 | 900 | if (tp->t_outq.c_cc < tp->t_hiwat) |
2c6a4e11 MT |
901 | (void) ttyoutput(CTRL('g'), tp); |
902 | } else | |
903 | ttyflush(tp, FREAD | FWRITE); | |
e39f9ea6 MT |
904 | } else { |
905 | if (putc(c, &tp->t_rawq) >= 0) { | |
906 | ttwakeup(tp); | |
907 | ttyecho(c, tp); | |
908 | } | |
4147b3f6 | 909 | } |
becb115c SL |
910 | goto endcase; |
911 | } | |
becb115c | 912 | /* |
2c6a4e11 | 913 | * From here on down canonical mode character |
becb115c SL |
914 | * processing takes place. |
915 | */ | |
2c6a4e11 MT |
916 | |
917 | /* | |
918 | * Oldstyle quoting of erase, kill, and eof chars. | |
919 | * | |
920 | * Historically is '\' , but can be changed (read: disabled) | |
921 | * with the VQUOTE subscript. | |
922 | */ | |
2c6a4e11 MT |
923 | |
924 | /* | |
925 | * erase (^H / ^?) | |
926 | */ | |
927 | if (CCEQ(cc[VERASE], c)) { | |
becb115c SL |
928 | if (tp->t_rawq.c_cc) |
929 | ttyrub(unputc(&tp->t_rawq), tp); | |
930 | goto endcase; | |
931 | } | |
66ad69d6 MT |
932 | if (lflag&ECHOKE && tp->t_rawq.c_cc == tp->t_rocount && |
933 | !(lflag&ECHOPRT)) { | |
becb115c SL |
934 | while (tp->t_rawq.c_cc) |
935 | ttyrub(unputc(&tp->t_rawq), tp); | |
936 | } else { | |
937 | ttyecho(c, tp); | |
2c6a4e11 MT |
938 | if (lflag&ECHOK || lflag&ECHOKE) |
939 | ttyecho('\n', tp); | |
becb115c SL |
940 | while (getc(&tp->t_rawq) > 0) |
941 | ; | |
942 | tp->t_rocount = 0; | |
943 | } | |
944 | tp->t_state &= ~TS_LOCAL; | |
945 | goto endcase; | |
946 | } | |
becb115c | 947 | /* |
2c6a4e11 | 948 | * word erase (^W) |
becb115c | 949 | */ |
2c6a4e11 MT |
950 | c = unputc(&tp->t_rawq); |
951 | } while (c != ' ' && c != '\t'); | |
952 | (void) putc(c, &tp->t_rawq); | |
953 | goto endcase; | |
954 | } | |
955 | /* | |
956 | * reprint line (^R) | |
957 | */ | |
958 | if (CCEQ(cc[VREPRINT], c)) { | |
959 | ttyretype(tp); | |
960 | goto endcase; | |
becb115c | 961 | } |
e39f9ea6 MT |
962 | /* |
963 | * reprint line (^R) | |
964 | */ | |
965 | if (CCEQ(cc[VREPRINT], c)) { | |
966 | ttyretype(tp); | |
967 | goto endcase; | |
968 | } | |
becb115c SL |
969 | /* |
970 | * Check for input buffer overflow | |
971 | */ | |
7c9f96c0 | 972 | if (tp->t_rawq.c_cc+tp->t_canq.c_cc >= TTYHOG) { |
2c6a4e11 MT |
973 | if (iflag&IMAXBEL) { |
974 | if (tp->t_outq.c_cc < TTHIWAT(tp)) | |
975 | (void) ttyoutput(CTRL('g'), tp); | |
976 | } else | |
977 | ttyflush(tp, FREAD | FWRITE); | |
becb115c | 978 | goto endcase; |
7c9f96c0 | 979 | } |
becb115c SL |
980 | /* |
981 | * Put data char in q for user and | |
982 | * wakeup on seeing a line delimiter. | |
983 | */ | |
984 | if (putc(c, &tp->t_rawq) >= 0) { | |
2c6a4e11 | 985 | if (ttbreakc(c)) { |
becb115c SL |
986 | tp->t_rocount = 0; |
987 | catq(&tp->t_rawq, &tp->t_canq); | |
4147b3f6 | 988 | ttwakeup(tp); |
becb115c SL |
989 | } else if (tp->t_rocount++ == 0) |
990 | tp->t_rocol = tp->t_col; | |
2c6a4e11 MT |
991 | if (CCEQ(cc[VQUOTE], c) && (iflag&ISTRIP)) |
992 | tp->t_state |= TS_QUOT; /* '\' escape */ | |
becb115c | 993 | if (tp->t_state&TS_ERASE) { |
e39f9ea6 MT |
994 | /* |
995 | * end of prterase \.../ | |
996 | */ | |
2c6a4e11 MT |
997 | /* |
998 | * end of prterase \.../ | |
999 | */ | |
becb115c SL |
1000 | tp->t_state &= ~TS_ERASE; |
1001 | (void) ttyoutput('/', tp); | |
1002 | } | |
1003 | i = tp->t_col; | |
4147b3f6 | 1004 | ttyecho(c, tp); |
2c6a4e11 MT |
1005 | if (CCEQ(cc[VEOF], c) && lflag&ECHO) { |
1006 | /* | |
1007 | * Place the cursor over the '^' of the ^D. | |
1008 | */ | |
becb115c SL |
1009 | i = MIN(2, tp->t_col - i); |
1010 | while (i > 0) { | |
1011 | (void) ttyoutput('\b', tp); | |
1012 | i--; | |
1013 | } | |
1014 | } | |
4147b3f6 | 1015 | } |
becb115c SL |
1016 | endcase: |
1017 | /* | |
2c6a4e11 | 1018 | * IXANY means allow any character to restart output. |
becb115c | 1019 | */ |
2c6a4e11 MT |
1020 | if (tp->t_state&TS_TTSTOP && (iflag&IXANY == 0) |
1021 | && cc[VSTART] != cc[VSTOP]) | |
4147b3f6 | 1022 | return; |
2c6a4e11 | 1023 | |
becb115c | 1024 | restartoutput: |
4147b3f6 | 1025 | tp->t_state &= ~TS_TTSTOP; |
2c6a4e11 | 1026 | tp->t_lflag &= ~FLUSHO; |
becb115c | 1027 | startoutput: |
4147b3f6 BJ |
1028 | ttstart(tp); |
1029 | } | |
1030 | ||
1031 | /* | |
becb115c | 1032 | * Put character on TTY output queue, adding delays, |
4147b3f6 | 1033 | * expanding tabs, and handling the CR/NL bit. |
becb115c SL |
1034 | * This is called both from the top half for output, |
1035 | * and from interrupt level for echoing. | |
4147b3f6 BJ |
1036 | * The arguments are the character and the tty structure. |
1037 | * Returns < 0 if putc succeeds, otherwise returns char to resend | |
1038 | * Must be recursive. | |
1039 | */ | |
1040 | ttyoutput(c, tp) | |
1041 | register c; | |
1042 | register struct tty *tp; | |
1043 | { | |
1044 | register char *colp; | |
1045 | register ctype; | |
2c6a4e11 MT |
1046 | if (!(tp->t_oflag&OPOST)) { |
1047 | if (tp->t_lflag&FLUSHO) | |
4147b3f6 BJ |
1048 | return (-1); |
1049 | if (putc(c, &tp->t_outq)) | |
4b72e2f9 | 1050 | return (c); |
4147b3f6 | 1051 | tk_nout++; |
e39f9ea6 | 1052 | tp->t_outcc++; |
4147b3f6 BJ |
1053 | return (-1); |
1054 | } | |
2c6a4e11 | 1055 | c &= 0377; |
4147b3f6 BJ |
1056 | /* |
1057 | * Turn tabs to spaces as required | |
1058 | */ | |
2c6a4e11 | 1059 | if (c == '\t' && tp->t_oflag&OXTABS ) { |
4147b3f6 BJ |
1060 | register int s; |
1061 | ||
1062 | c = 8 - (tp->t_col&7); | |
2c6a4e11 | 1063 | if ((tp->t_lflag&FLUSHO) == 0) { |
4f3a716e | 1064 | s = spltty(); /* don't interrupt tabs */ |
4147b3f6 BJ |
1065 | c -= b_to_q(" ", c, &tp->t_outq); |
1066 | tk_nout += c; | |
e39f9ea6 | 1067 | tp->t_outcc += c; |
4147b3f6 BJ |
1068 | splx(s); |
1069 | } | |
1070 | tp->t_col += c; | |
1071 | return (c ? -1 : '\t'); | |
1072 | } | |
e39f9ea6 MT |
1073 | if (c == CEOT && oflag&ONOEOT) |
1074 | return(-1); | |
4147b3f6 | 1075 | tk_nout++; |
e39f9ea6 | 1076 | tp->t_outcc++; |
2c6a4e11 | 1077 | #ifdef notdef |
4147b3f6 BJ |
1078 | /* |
1079 | * turn <nl> to <cr><lf> if desired. | |
1080 | */ | |
2c6a4e11 | 1081 | #endif |
e39f9ea6 MT |
1082 | if ((tp->t_lflag&FLUSHO) == 0 && putc(c, &tp->t_outq)) |
1083 | return (c); | |
2c6a4e11 | 1084 | if ((tp->t_lflag&FLUSHO) == 0 && putc(c, &tp->t_outq)) |
4147b3f6 BJ |
1085 | return (c); |
1086 | /* | |
1087 | * Calculate delays. | |
1088 | * The numbers here represent clock ticks | |
1089 | * and are not necessarily optimal for all terminals. | |
becb115c SL |
1090 | * |
1091 | * SHOULD JUST ALLOW USER TO SPECIFY DELAYS | |
e39f9ea6 MT |
1092 | * |
1093 | * (actually, should THROW AWAY terminals which need delays) | |
4147b3f6 BJ |
1094 | */ |
1095 | colp = &tp->t_col; | |
1096 | ctype = partab[c]; | |
1097 | c = 0; | |
1098 | switch (ctype&077) { | |
1099 | ||
1100 | case ORDINARY: | |
1101 | (*colp)++; | |
1102 | ||
1103 | case CONTROL: | |
1104 | break; | |
1105 | ||
1106 | case BACKSPACE: | |
1107 | if (*colp) | |
1108 | (*colp)--; | |
1109 | break; | |
1110 | ||
3686c829 SL |
1111 | /* |
1112 | * This macro is close enough to the correct thing; | |
1113 | * it should be replaced by real user settable delays | |
1114 | * in any event... | |
1115 | */ | |
1116 | #define mstohz(ms) (((ms) * hz) >> 10) | |
4147b3f6 BJ |
1117 | case NEWLINE: |
1118 | ctype = (tp->t_flags >> 8) & 03; | |
4b72e2f9 | 1119 | if (ctype == 1) { /* tty 37 */ |
8011f5df MK |
1120 | if (*colp > 0) { |
1121 | c = (((unsigned)*colp) >> 4) + 3; | |
1122 | if ((unsigned)c > 6) | |
1123 | c = 6; | |
1124 | } | |
becb115c | 1125 | } else if (ctype == 2) /* vt05 */ |
3686c829 | 1126 | c = mstohz(100); |
4147b3f6 BJ |
1127 | *colp = 0; |
1128 | break; | |
1129 | ||
1130 | case TAB: | |
1131 | ctype = (tp->t_flags >> 10) & 03; | |
4b72e2f9 | 1132 | if (ctype == 1) { /* tty 37 */ |
4147b3f6 | 1133 | c = 1 - (*colp | ~07); |
4b72e2f9 | 1134 | if (c < 5) |
4147b3f6 BJ |
1135 | c = 0; |
1136 | } | |
1137 | *colp |= 07; | |
1138 | (*colp)++; | |
1139 | break; | |
1140 | ||
1141 | case VTAB: | |
becb115c | 1142 | if (tp->t_flags&VTDELAY) /* tty 37 */ |
4147b3f6 BJ |
1143 | c = 0177; |
1144 | break; | |
1145 | ||
1146 | case RETURN: | |
1147 | ctype = (tp->t_flags >> 12) & 03; | |
becb115c | 1148 | if (ctype == 1) /* tn 300 */ |
3686c829 | 1149 | c = mstohz(83); |
becb115c | 1150 | else if (ctype == 2) /* ti 700 */ |
3686c829 | 1151 | c = mstohz(166); |
becb115c | 1152 | else if (ctype == 3) { /* concept 100 */ |
4147b3f6 | 1153 | int i; |
becb115c | 1154 | |
4147b3f6 | 1155 | if ((i = *colp) >= 0) |
becb115c | 1156 | for (; i < 9; i++) |
4147b3f6 BJ |
1157 | (void) putc(0177, &tp->t_outq); |
1158 | } | |
1159 | *colp = 0; | |
1160 | } | |
2c6a4e11 | 1161 | if (c && (tp->t_lflag&FLUSHO) == 0) |
e39f9ea6 | 1162 | (void) putc(c|TTY_QUOTE, &tp->t_outq); |
4147b3f6 BJ |
1163 | return (-1); |
1164 | } | |
3686c829 | 1165 | #undef mstohz |
4147b3f6 BJ |
1166 | |
1167 | /* | |
1168 | * Called from device's read routine after it has | |
1169 | * calculated the tty-structure given as argument. | |
1170 | */ | |
66ad69d6 | 1171 | ttread(tp, uio, flag) |
4b72e2f9 | 1172 | register struct tty *tp; |
d6d7360b | 1173 | struct uio *uio; |
4147b3f6 BJ |
1174 | { |
1175 | register struct clist *qp; | |
2c6a4e11 MT |
1176 | register int c, t_flags; |
1177 | register long lflag = tp->t_lflag; | |
1178 | register long iflag = tp->t_iflag; | |
1179 | register u_char *cc = tp->t_cc; | |
875a1e2c | 1180 | int s, first, error = 0; |
4147b3f6 | 1181 | |
2c6a4e11 | 1182 | |
4147b3f6 | 1183 | loop: |
66ad69d6 | 1184 | s = spltty(); |
becb115c | 1185 | /* |
66ad69d6 | 1186 | * take pending input first |
becb115c | 1187 | */ |
2c6a4e11 | 1188 | if (tp->t_lflag&PENDIN) |
4147b3f6 | 1189 | ttypend(tp); |
66ad69d6 MT |
1190 | /* |
1191 | * Handle carrier. | |
1192 | */ | |
1193 | if (!(tp->t_state&TS_CARR_ON) && !(tp->t_cflag&CLOCAL)) { | |
1194 | if (tp->t_state&TS_ISOPEN) { | |
1195 | splx(s); | |
1196 | return (0); /* EOF */ | |
c4ec2128 | 1197 | } else if (flag & IO_NDELAY) { |
66ad69d6 MT |
1198 | splx(s); |
1199 | return (EWOULDBLOCK); | |
1200 | } else { | |
1201 | /* | |
1202 | * sleep awaiting carrier | |
1203 | */ | |
1204 | sleep((caddr_t)&tp->t_rawq, TTIPRI); | |
1205 | splx(s); | |
1206 | goto loop; | |
1207 | } | |
1208 | } | |
875a1e2c | 1209 | splx(s); |
becb115c SL |
1210 | /* |
1211 | * Hang process if it's in the background. | |
1212 | */ | |
232c0273 | 1213 | if (isbackground(u.u_procp, tp)) { |
52c041cd MK |
1214 | if ((u.u_procp->p_sigignore & sigmask(SIGTTIN)) || |
1215 | (u.u_procp->p_sigmask & sigmask(SIGTTIN)) || | |
e39f9ea6 | 1216 | u.u_procp->p_flag&SVFORK || u.u_procp->p_pgrp->pg_jobc == 0) |
840510a3 | 1217 | return (EIO); |
e39f9ea6 | 1218 | pgsignal(u.u_procp->p_pgrp, SIGTTIN); |
4147b3f6 | 1219 | sleep((caddr_t)&lbolt, TTIPRI); |
58786a81 | 1220 | goto loop; |
4147b3f6 | 1221 | } |
becb115c | 1222 | /* |
2c6a4e11 MT |
1223 | * If canonical, use the canonical queue, |
1224 | * else use the raw queue. | |
becb115c | 1225 | */ |
2c6a4e11 | 1226 | qp = lflag&ICANON ? &tp->t_canq : &tp->t_rawq; |
becb115c SL |
1227 | /* |
1228 | * No input, sleep on rawq awaiting hardware | |
1229 | * receipt and notification. | |
1230 | */ | |
4f3a716e | 1231 | s = spltty(); |
becb115c | 1232 | if (qp->c_cc <= 0) { |
66ad69d6 | 1233 | /** XXX ??? ask mike why TS_CARR_ON was (once) necessary here |
becb115c SL |
1234 | if ((tp->t_state&TS_CARR_ON) == 0 || |
1235 | (tp->t_state&TS_NBIO)) { | |
875a1e2c | 1236 | splx(s); |
becb115c | 1237 | return (EWOULDBLOCK); |
4147b3f6 | 1238 | } |
66ad69d6 | 1239 | **/ |
c4ec2128 | 1240 | if (flag & IO_NDELAY) { |
66ad69d6 MT |
1241 | splx(s); |
1242 | return (EWOULDBLOCK); | |
1243 | } | |
becb115c | 1244 | sleep((caddr_t)&tp->t_rawq, TTIPRI); |
875a1e2c | 1245 | splx(s); |
becb115c SL |
1246 | goto loop; |
1247 | } | |
875a1e2c | 1248 | splx(s); |
becb115c | 1249 | /* |
2c6a4e11 | 1250 | * Input present, check for input mapping and processing. |
becb115c SL |
1251 | */ |
1252 | first = 1; | |
1253 | while ((c = getc(qp)) >= 0) { | |
becb115c | 1254 | /* |
2c6a4e11 | 1255 | * delayed suspend (^Y) |
becb115c | 1256 | */ |
2c6a4e11 | 1257 | if (CCEQ(cc[VDSUSP], c) && lflag&ISIG) { |
232c0273 | 1258 | pgsignal(tp->t_pgrp, SIGTSTP); |
becb115c SL |
1259 | if (first) { |
1260 | sleep((caddr_t)&lbolt, TTIPRI); | |
1261 | goto loop; | |
1262 | } | |
1263 | break; | |
4147b3f6 | 1264 | } |
becb115c | 1265 | /* |
2c6a4e11 | 1266 | * Interpret EOF only in canonical mode. |
becb115c | 1267 | */ |
2c6a4e11 | 1268 | if (CCEQ(cc[VEOF], c) && lflag&ICANON) |
becb115c SL |
1269 | break; |
1270 | /* | |
1271 | * Give user character. | |
1272 | */ | |
2c6a4e11 | 1273 | error = ureadc(iflag&ISTRIP ? c & 0177 : c , uio); |
becb115c SL |
1274 | if (error) |
1275 | break; | |
9ec65acb | 1276 | if (uio->uio_resid == 0) |
becb115c SL |
1277 | break; |
1278 | /* | |
2c6a4e11 | 1279 | * In canonical mode check for a "break character" |
becb115c SL |
1280 | * marking the end of a "line of input". |
1281 | */ | |
2c6a4e11 | 1282 | if (lflag&ICANON && ttbreakc(c)) { |
becb115c | 1283 | break; |
2c6a4e11 | 1284 | } |
e39f9ea6 | 1285 | } |
becb115c | 1286 | first = 0; |
4147b3f6 | 1287 | } |
becb115c SL |
1288 | /* |
1289 | * Look to unblock output now that (presumably) | |
1290 | * the input queue has gone down. | |
1291 | */ | |
2c6a4e11 MT |
1292 | if (tp->t_state&TS_TBLOCK && tp->t_rawq.c_cc < TTYHOG/5) { |
1293 | if (cc[VSTART] != POSIX_V_DISABLE | |
1294 | && putc(cc[VSTART], &tp->t_outq) == 0) { | |
4147b3f6 BJ |
1295 | tp->t_state &= ~TS_TBLOCK; |
1296 | ttstart(tp); | |
1297 | } | |
2c6a4e11 | 1298 | } |
e39f9ea6 | 1299 | } |
840510a3 | 1300 | return (error); |
4147b3f6 BJ |
1301 | } |
1302 | ||
605d7712 MK |
1303 | /* |
1304 | * Check the output queue on tp for space for a kernel message | |
1305 | * (from uprintf/tprintf). Allow some space over the normal | |
1306 | * hiwater mark so we don't lose messages due to normal flow | |
1307 | * control, but don't let the tty run amok. | |
ca9b16e5 MK |
1308 | * Sleeps here are not interruptible, but we return prematurely |
1309 | * if new signals come in. | |
605d7712 MK |
1310 | */ |
1311 | ttycheckoutq(tp, wait) | |
1312 | register struct tty *tp; | |
1313 | int wait; | |
1314 | { | |
ca9b16e5 | 1315 | int hiwat, s, oldsig; |
605d7712 | 1316 | |
e39f9ea6 | 1317 | hiwat = tp->t_hiwat; |
605d7712 | 1318 | s = spltty(); |
ca9b16e5 | 1319 | oldsig = u.u_procp->p_sig; |
605d7712 | 1320 | if (tp->t_outq.c_cc > hiwat + 200) |
fb1db32c MK |
1321 | while (tp->t_outq.c_cc > hiwat) { |
1322 | ttstart(tp); | |
ca9b16e5 | 1323 | if (wait == 0 || u.u_procp->p_sig != oldsig) { |
fb1db32c MK |
1324 | splx(s); |
1325 | return (0); | |
1326 | } | |
ca9b16e5 | 1327 | timeout(wakeup, (caddr_t)&tp->t_outq, hz); |
fb1db32c | 1328 | tp->t_state |= TS_ASLEEP; |
ca9b16e5 | 1329 | sleep((caddr_t)&tp->t_outq, PZERO - 1); |
605d7712 | 1330 | } |
605d7712 MK |
1331 | splx(s); |
1332 | return (1); | |
1333 | } | |
1334 | ||
4147b3f6 BJ |
1335 | /* |
1336 | * Called from the device's write routine after it has | |
1337 | * calculated the tty-structure given as argument. | |
1338 | */ | |
66ad69d6 | 1339 | ttwrite(tp, uio, flag) |
4b72e2f9 | 1340 | register struct tty *tp; |
becb115c | 1341 | register struct uio *uio; |
4147b3f6 | 1342 | { |
4147b3f6 | 1343 | register char *cp; |
c4ec2128 | 1344 | register int cc, ce; |
becb115c | 1345 | int i, hiwat, cnt, error, s; |
4147b3f6 | 1346 | char obuf[OBUFSIZ]; |
4147b3f6 | 1347 | |
e39f9ea6 | 1348 | hiwat = tp->t_hiwat; |
becb115c SL |
1349 | cnt = uio->uio_resid; |
1350 | error = 0; | |
4147b3f6 | 1351 | loop: |
66ad69d6 MT |
1352 | s = spltty(); |
1353 | if (!(tp->t_state&TS_CARR_ON) && !(tp->t_cflag&CLOCAL)) { | |
1354 | if (tp->t_state&TS_ISOPEN) { | |
1355 | splx(s); | |
1356 | return (EIO); | |
c4ec2128 | 1357 | } else if (flag & IO_NDELAY) { |
66ad69d6 MT |
1358 | splx(s); |
1359 | return (EWOULDBLOCK); | |
1360 | } else { | |
1361 | /* | |
1362 | * sleep awaiting carrier | |
1363 | */ | |
1364 | sleep((caddr_t)&tp->t_rawq, TTIPRI); | |
1365 | splx(s); | |
1366 | goto loop; | |
1367 | } | |
1368 | } | |
1369 | splx(s); | |
becb115c SL |
1370 | /* |
1371 | * Hang the process if it's in the background. | |
1372 | */ | |
2c6a4e11 | 1373 | (tp->t_lflag&TOSTOP) && (u.u_procp->p_flag&SVFORK)==0 && |
52c041cd | 1374 | !(u.u_procp->p_sigignore & sigmask(SIGTTOU)) && |
e39f9ea6 MT |
1375 | !(u.u_procp->p_sigmask & sigmask(SIGTTOU)) && |
1376 | u.u_procp->p_pgrp->pg_jobc) { | |
1377 | pgsignal(u.u_procp->p_pgrp, SIGTTOU); | |
4147b3f6 | 1378 | sleep((caddr_t)&lbolt, TTIPRI); |
93d2ecff | 1379 | goto loop; |
4147b3f6 | 1380 | } |
becb115c SL |
1381 | /* |
1382 | * Process the user's data in at most OBUFSIZ | |
1383 | * chunks. Perform lower case simulation and | |
1384 | * similar hacks. Keep track of high water | |
1385 | * mark, sleep on overflow awaiting device aid | |
1386 | * in acquiring new space. | |
1387 | */ | |
913ea2d1 | 1388 | while (uio->uio_resid > 0) { |
b482b2c8 MK |
1389 | if (tp->t_outq.c_cc > hiwat) { |
1390 | cc = 0; | |
1391 | goto ovhiwat; | |
1392 | } | |
becb115c SL |
1393 | /* |
1394 | * Grab a hunk of data from the user. | |
1395 | */ | |
913ea2d1 BJ |
1396 | cc = uio->uio_iov->iov_len; |
1397 | if (cc == 0) { | |
1398 | uio->uio_iovcnt--; | |
1399 | uio->uio_iov++; | |
93d2ecff | 1400 | if (uio->uio_iovcnt <= 0) |
913ea2d1 BJ |
1401 | panic("ttwrite"); |
1402 | continue; | |
1403 | } | |
1404 | if (cc > OBUFSIZ) | |
1405 | cc = OBUFSIZ; | |
4147b3f6 | 1406 | cp = obuf; |
c4ec2128 | 1407 | error = uiomove(cp, cc, uio); |
840510a3 | 1408 | if (error) |
4147b3f6 | 1409 | break; |
2c6a4e11 | 1410 | if (tp->t_lflag&FLUSHO) |
4147b3f6 | 1411 | continue; |
2c6a4e11 | 1412 | #ifdef notdef |
becb115c SL |
1413 | /* |
1414 | * If nothing fancy need be done, grab those characters we | |
1415 | * can handle without any of ttyoutput's processing and | |
1416 | * just transfer them to the output q. For those chars | |
1417 | * which require special processing (as indicated by the | |
1418 | * bits in partab), call ttyoutput. After processing | |
1419 | * a hunk of data, look for FLUSHO so ^O's will take effect | |
1420 | * immediately. | |
1421 | */ | |
1422 | while (cc > 0) { | |
2c6a4e11 | 1423 | if (!(tp->t_oflag&OPOST)) |
4147b3f6 BJ |
1424 | ce = cc; |
1425 | else { | |
3f36033f MK |
1426 | ce = cc - scanc((unsigned)cc, (u_char *)cp, |
1427 | (u_char *)partab, 077); | |
becb115c SL |
1428 | /* |
1429 | * If ce is zero, then we're processing | |
1430 | * a special character through ttyoutput. | |
1431 | */ | |
1432 | if (ce == 0) { | |
4147b3f6 BJ |
1433 | tp->t_rocount = 0; |
1434 | if (ttyoutput(*cp, tp) >= 0) { | |
93d2ecff JB |
1435 | /* no c-lists, wait a bit */ |
1436 | ttstart(tp); | |
1437 | sleep((caddr_t)&lbolt, TTOPRI); | |
1438 | if (cc != 0) { | |
1439 | uio->uio_iov->iov_base -= cc; | |
1440 | uio->uio_iov->iov_len += cc; | |
1441 | uio->uio_resid += cc; | |
1442 | uio->uio_offset -= cc; | |
1443 | } | |
1444 | goto loop; | |
4147b3f6 | 1445 | } |
becb115c | 1446 | cp++, cc--; |
2c6a4e11 | 1447 | if (tp->t_lflag&FLUSHO || |
becb115c | 1448 | tp->t_outq.c_cc > hiwat) |
4147b3f6 | 1449 | goto ovhiwat; |
becb115c | 1450 | continue; |
4147b3f6 BJ |
1451 | } |
1452 | } | |
becb115c SL |
1453 | /* |
1454 | * A bunch of normal characters have been found, | |
1455 | * transfer them en masse to the output queue and | |
1456 | * continue processing at the top of the loop. | |
1457 | * If there are any further characters in this | |
1458 | * <= OBUFSIZ chunk, the first should be a character | |
1459 | * requiring special handling by ttyoutput. | |
1460 | */ | |
4147b3f6 | 1461 | tp->t_rocount = 0; |
becb115c SL |
1462 | i = b_to_q(cp, ce, &tp->t_outq); |
1463 | ce -= i; | |
1464 | tp->t_col += ce; | |
1465 | cp += ce, cc -= ce, tk_nout += ce; | |
e39f9ea6 | 1466 | tp->t_outcc += ce; |
becb115c SL |
1467 | if (i > 0) { |
1468 | /* out of c-lists, wait a bit */ | |
4147b3f6 BJ |
1469 | ttstart(tp); |
1470 | sleep((caddr_t)&lbolt, TTOPRI); | |
93d2ecff JB |
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 | goto loop; | |
4147b3f6 | 1476 | } |
2c6a4e11 | 1477 | if (tp->t_lflag&FLUSHO || tp->t_outq.c_cc > hiwat) |
4147b3f6 BJ |
1478 | goto ovhiwat; |
1479 | } | |
2c6a4e11 | 1480 | ttstart(tp); |
e39f9ea6 | 1481 | ttstart(tp); |
4147b3f6 | 1482 | } |
840510a3 | 1483 | return (error); |
4147b3f6 | 1484 | ovhiwat: |
becb115c SL |
1485 | if (cc != 0) { |
1486 | uio->uio_iov->iov_base -= cc; | |
1487 | uio->uio_iov->iov_len += cc; | |
1488 | uio->uio_resid += cc; | |
1489 | uio->uio_offset -= cc; | |
1490 | } | |
b482b2c8 MK |
1491 | ttstart(tp); |
1492 | s = spltty(); | |
becb115c | 1493 | /* |
2c6a4e11 | 1494 | * This can only occur if FLUSHO is set in t_lflag, |
b482b2c8 | 1495 | * or if ttstart/oproc is synchronous (or very fast). |
becb115c | 1496 | */ |
4147b3f6 | 1497 | if (tp->t_outq.c_cc <= hiwat) { |
becb115c | 1498 | splx(s); |
4147b3f6 BJ |
1499 | goto loop; |
1500 | } | |
c4ec2128 | 1501 | if (flag & IO_NDELAY) { |
4f3a716e | 1502 | splx(s); |
913ea2d1 | 1503 | if (uio->uio_resid == cnt) |
840510a3 BJ |
1504 | return (EWOULDBLOCK); |
1505 | return (0); | |
4147b3f6 BJ |
1506 | } |
1507 | tp->t_state |= TS_ASLEEP; | |
1508 | sleep((caddr_t)&tp->t_outq, TTOPRI); | |
becb115c | 1509 | splx(s); |
4147b3f6 BJ |
1510 | goto loop; |
1511 | } | |
1512 | ||
1513 | /* | |
1514 | * Rubout one character from the rawq of tp | |
1515 | * as cleanly as possible. | |
1516 | */ | |
1517 | ttyrub(c, tp) | |
4b72e2f9 SL |
1518 | register c; |
1519 | register struct tty *tp; | |
4147b3f6 BJ |
1520 | { |
1521 | register char *cp; | |
1522 | register int savecol; | |
1523 | int s; | |
1524 | char *nextc(); | |
1525 | ||
2c6a4e11 | 1526 | if ((tp->t_lflag&ECHO) == 0) |
4147b3f6 | 1527 | return; |
2c6a4e11 | 1528 | if (tp->t_lflag&ECHOE) { |
4147b3f6 BJ |
1529 | if (tp->t_rocount == 0) { |
1530 | /* | |
1531 | * Screwed by ttwrite; retype | |
1532 | */ | |
1533 | ttyretype(tp); | |
1534 | return; | |
1535 | } | |
2c6a4e11 | 1536 | /* if tab or newline was escaped - XXX - not 8bit */ |
e39f9ea6 | 1537 | if (c == ('\t'|TTY_QUOTE) || c == ('\n'|TTY_QUOTE)) |
4147b3f6 | 1538 | ttyrubo(tp, 2); |
e39f9ea6 | 1539 | else switch (partab[c&=0377]&077) { |
4147b3f6 BJ |
1540 | |
1541 | case ORDINARY: | |
2c6a4e11 | 1542 | #ifdef notdef |
e39f9ea6 | 1543 | ttyrubo(tp, 1); |
4147b3f6 BJ |
1544 | break; |
1545 | ||
1546 | case VTAB: | |
1547 | case BACKSPACE: | |
1548 | case CONTROL: | |
1549 | case RETURN: | |
2c6a4e11 | 1550 | if (tp->t_lflag&ECHOCTL) |
4147b3f6 BJ |
1551 | ttyrubo(tp, 2); |
1552 | break; | |
1553 | ||
e39f9ea6 MT |
1554 | case TAB: { |
1555 | int c; | |
1556 | ||
4147b3f6 BJ |
1557 | if (tp->t_rocount < tp->t_rawq.c_cc) { |
1558 | ttyretype(tp); | |
1559 | return; | |
1560 | } | |
4f3a716e | 1561 | s = spltty(); |
4147b3f6 | 1562 | savecol = tp->t_col; |
becb115c | 1563 | tp->t_state |= TS_CNTTB; |
2c6a4e11 | 1564 | tp->t_lflag |= FLUSHO; |
4147b3f6 | 1565 | tp->t_col = tp->t_rocol; |
becb115c | 1566 | cp = tp->t_rawq.c_cf; |
2c6a4e11 | 1567 | tp->t_lflag &= ~FLUSHO; |
becb115c | 1568 | tp->t_state &= ~TS_CNTTB; |
4147b3f6 BJ |
1569 | splx(s); |
1570 | /* | |
1571 | * savecol will now be length of the tab | |
1572 | */ | |
1573 | savecol -= tp->t_col; | |
1574 | tp->t_col += savecol; | |
1575 | if (savecol > 8) | |
1576 | savecol = 8; /* overflow screw */ | |
1577 | while (--savecol >= 0) | |
1578 | (void) ttyoutput('\b', tp); | |
1579 | break; | |
e39f9ea6 | 1580 | } |
4147b3f6 BJ |
1581 | |
1582 | default: | |
66ad69d6 | 1583 | /* XXX */ |
e39f9ea6 MT |
1584 | printf("ttyrub: would panic c = %d, val = %d\n", |
1585 | c, partab[c&=0377]&077); | |
1586 | /*panic("ttyrub");*/ | |
4147b3f6 | 1587 | } |
2c6a4e11 | 1588 | } else if (tp->t_lflag&ECHOPRT) { |
becb115c | 1589 | if ((tp->t_state&TS_ERASE) == 0) { |
4147b3f6 | 1590 | (void) ttyoutput('\\', tp); |
becb115c | 1591 | tp->t_state |= TS_ERASE; |
4147b3f6 BJ |
1592 | } |
1593 | ttyecho(c, tp); | |
1594 | } else | |
2c6a4e11 | 1595 | ttyecho(tp->t_cc[VERASE], tp); |
4147b3f6 BJ |
1596 | tp->t_rocount--; |
1597 | } | |
1598 | ||
1599 | /* | |
1600 | * Crt back over cnt chars perhaps | |
1601 | * erasing them. | |
1602 | */ | |
1603 | ttyrubo(tp, cnt) | |
4b72e2f9 SL |
1604 | register struct tty *tp; |
1605 | int cnt; | |
4147b3f6 | 1606 | { |
2c6a4e11 | 1607 | register char *rubostring = tp->t_lflag&ECHOE ? "\b \b" : "\b"; |
4147b3f6 BJ |
1608 | |
1609 | while (--cnt >= 0) | |
e39f9ea6 | 1610 | ttyout("\b \b", tp); |
4147b3f6 BJ |
1611 | } |
1612 | ||
1613 | /* | |
1614 | * Reprint the rawq line. | |
1615 | * We assume c_cc has already been checked. | |
1616 | */ | |
1617 | ttyretype(tp) | |
4b72e2f9 | 1618 | register struct tty *tp; |
4147b3f6 BJ |
1619 | { |
1620 | register char *cp; | |
1621 | char *nextc(); | |
e39f9ea6 | 1622 | int s, c; |
4147b3f6 | 1623 | |
2c6a4e11 MT |
1624 | if (tp->t_cc[VREPRINT] != POSIX_V_DISABLE) |
1625 | ttyecho(tp->t_cc[VREPRINT], tp); | |
4147b3f6 | 1626 | (void) ttyoutput('\n', tp); |
4f3a716e | 1627 | s = spltty(); |
e39f9ea6 MT |
1628 | /*** XXX *** FIX *** NEXTC IS BROKEN - DOESN'T CHECK QUOTE |
1629 | BIT OF FIRST CHAR ****/ | |
1630 | for (cp = tp->t_canq.c_cf, c=(cp?*cp:0); cp; cp = nextc(&tp->t_canq, cp, &c)) { | |
1631 | ttyecho(c, tp); | |
1632 | } | |
1633 | for (cp = tp->t_rawq.c_cf, c=(cp?*cp:0); cp; cp = nextc(&tp->t_rawq, cp, &c)) { | |
1634 | ttyecho(c, tp); | |
1635 | } | |
becb115c | 1636 | tp->t_state &= ~TS_ERASE; |
4147b3f6 BJ |
1637 | splx(s); |
1638 | tp->t_rocount = tp->t_rawq.c_cc; | |
1639 | tp->t_rocol = 0; | |
1640 | } | |
1641 | ||
1642 | /* | |
2c6a4e11 | 1643 | * Echo a typed character to the terminal. |
4147b3f6 BJ |
1644 | */ |
1645 | ttyecho(c, tp) | |
4b72e2f9 SL |
1646 | register c; |
1647 | register struct tty *tp; | |
4147b3f6 | 1648 | { |
4147b3f6 | 1649 | c &= 0377; |
2c6a4e11 MT |
1650 | if ((tp->t_state&TS_CNTTB) == 0) |
1651 | tp->t_lflag &= ~FLUSHO; | |
1652 | if ((tp->t_lflag&ECHO) == 0 && !(tp->t_lflag&ECHONL && c == '\n')) | |
4147b3f6 | 1653 | return; |
2c6a4e11 | 1654 | if (tp->t_lflag&ECHOCTL) { |
e39f9ea6 | 1655 | if ((c&TTY_CHARMASK)<=037 && c!='\t' && c!='\n' || c==0177) { |
4147b3f6 | 1656 | (void) ttyoutput('^', tp); |
e39f9ea6 | 1657 | c &= TTY_CHARMASK; |
4147b3f6 BJ |
1658 | if (c == 0177) |
1659 | c = '?'; | |
2c6a4e11 | 1660 | #ifdef notdef |
2c6a4e11 | 1661 | #endif |
4147b3f6 BJ |
1662 | else |
1663 | c += 'A' - 1; | |
1664 | } | |
1665 | } | |
e39f9ea6 | 1666 | (void) ttyoutput(c, tp); |
4147b3f6 BJ |
1667 | * send string cp to tp |
1668 | */ | |
1669 | ttyout(cp, tp) | |
4b72e2f9 SL |
1670 | register char *cp; |
1671 | register struct tty *tp; | |
4147b3f6 BJ |
1672 | { |
1673 | register char c; | |
1674 | ||
1675 | while (c = *cp++) | |
1676 | (void) ttyoutput(c, tp); | |
1677 | } | |
1678 | ||
1679 | ttwakeup(tp) | |
1680 | struct tty *tp; | |
1681 | { | |
1682 | ||
1683 | if (tp->t_rsel) { | |
1684 | selwakeup(tp->t_rsel, tp->t_state&TS_RCOLL); | |
1685 | tp->t_state &= ~TS_RCOLL; | |
1686 | tp->t_rsel = 0; | |
1687 | } | |
88a7a62a | 1688 | if (tp->t_state & TS_ASYNC) |
232c0273 | 1689 | pgsignal(tp->t_pgrp, SIGIO); |
4147b3f6 BJ |
1690 | wakeup((caddr_t)&tp->t_rawq); |
1691 | } | |
e39f9ea6 MT |
1692 | |
1693 | /* | |
1694 | * set tty hi and low water marks | |
1695 | * | |
1696 | * Try to arrange the dynamics so there's about one second | |
1697 | * from hi to low water. | |
1698 | * | |
1699 | */ | |
1700 | ttsetwater(tp) | |
1701 | struct tty *tp; | |
1702 | { | |
1703 | register cps = tp->t_ospeed / 10; | |
1704 | register x; | |
1705 | ||
1706 | #define clamp(x, h, l) ((x)>h ? h : ((x)<l) ? l : (x)) | |
1707 | tp->t_lowat = x = clamp(cps/2, TTMAXLOWAT, TTMINLOWAT); | |
1708 | x += cps; | |
1709 | x = clamp(x, TTMAXHIWAT, TTMINHIWAT); | |
1710 | tp->t_hiwat = roundup(x, CBSIZE); | |
1711 | #undef clamp | |
1712 | } | |
1713 | ||
1714 | ttspeedtab(speed, table) | |
1715 | struct speedtab table[]; | |
1716 | { | |
1717 | register int i; | |
1718 | ||
1719 | for (i = 0; table[i].sp_speed != -1; i++) | |
1720 | if (table[i].sp_speed == speed) | |
1721 | return(table[i].sp_code); | |
1722 | return(-1); | |
1723 | } | |
52004850 MT |
1724 | |
1725 | /* | |
1726 | * (^T) | |
1727 | * Report on state of foreground process group. | |
1728 | */ | |
1729 | ttyinfo(tp) | |
1730 | struct tty *tp; | |
1731 | { | |
1732 | register struct proc *p; | |
52004850 MT |
1733 | |
1734 | if (ttycheckoutq(tp,0) == 0) | |
1735 | return; | |
232c0273 MT |
1736 | if (tp->t_session == NULL) |
1737 | ttyprintf(tp, "kernel: not a controlling terminal\n"); | |
1738 | else if (tp->t_pgrp == NULL || | |
1739 | (p = tp->t_pgrp->pg_mem) == NULL) | |
52004850 | 1740 | ttyprintf(tp, "kernel: no foreground process group\n"); |
52004850 MT |
1741 | else { |
1742 | int i = 0; | |
232c0273 | 1743 | |
52004850 MT |
1744 | for (; p != NULL; p = p->p_pgrpnxt) { |
1745 | ttyprintf(tp, | |
1746 | "kernel: pid: %d state: %x wchan: %x ticks: %d\n", | |
1747 | p->p_pid, p->p_stat, p->p_wchan, p->p_cpticks); | |
1748 | if (++i > 6) { | |
1749 | ttyprintf(tp, "kernel: more...\n"); | |
1750 | break; | |
1751 | } | |
1752 | } | |
1753 | } | |
1754 | } | |
1755 | ||
1756 | #define TOTTY 0x2 /* XXX should be in header */ | |
1757 | /*VARARGS2*/ | |
1758 | ttyprintf(tp, fmt, x1) | |
232c0273 | 1759 | struct tty *tp; |
52004850 MT |
1760 | char *fmt; |
1761 | unsigned x1; | |
1762 | { | |
232c0273 MT |
1763 | prf(fmt, &x1, TOTTY, (caddr_t)tp); |
1764 | } | |
1765 | ||
1766 | /* | |
1767 | * Output char to tty; console putchar style. | |
1768 | */ | |
1769 | tputchar(c, tp) | |
1770 | int c; | |
1771 | struct tty *tp; | |
1772 | { | |
1773 | register s = spltty(); | |
1774 | ||
1775 | if ((tp->t_state & (TS_CARR_ON | TS_ISOPEN)) | |
1776 | == (TS_CARR_ON | TS_ISOPEN)) { | |
1777 | if (c == '\n') | |
1778 | (void) ttyoutput('\r', tp); | |
1779 | (void) ttyoutput(c, tp); | |
1780 | ttstart(tp); | |
1781 | splx(s); | |
1782 | return (0); | |
1783 | } | |
1784 | splx(s); | |
1785 | return (-1); | |
52004850 | 1786 | } |