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 | * | |
c4ec2128 | 6 | * @(#)tty.c 7.17 (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" | |
13 | #include "tty.h" | |
2c6a4e11 MT |
14 | #define TTYDEFCHARS |
15 | #include "ttydefaults.h" | |
16 | #undef TTYDEFCHARS | |
17 | #include "termios.h" | |
e39f9ea6 MT |
18 | #define TTYDEFCHARS |
19 | #include "ttydefaults.h" | |
20 | #undef TTYDEFCHARS | |
21 | #include "termios.h" | |
94368568 | 22 | #include "proc.h" |
94368568 JB |
23 | #include "file.h" |
24 | #include "conf.h" | |
fb1db32c | 25 | #include "dkstat.h" |
94368568 JB |
26 | #include "uio.h" |
27 | #include "kernel.h" | |
c4ec2128 | 28 | #include "vnode.h" |
2c6a4e11 | 29 | #include "syslog.h" |
d301d150 KM |
30 | |
31 | #include "machine/reg.h" | |
e39f9ea6 | 32 | #include "syslog.h" |
89dc6dfb | 33 | |
8bba2b8f RE |
34 | /* |
35 | * Table giving parity for characters and indicating | |
e39f9ea6 MT |
36 | * character classes to tty driver. The 8th bit |
37 | * indicates parity, the 7th bit indicates the character | |
38 | * is an alphameric or underscore (for ALTWERASE), and the | |
39 | * low 6 bits indicate delay type. If the low 6 bits are 0 | |
40 | * then the character needs no special processing on output. | |
8bba2b8f RE |
41 | */ |
42 | ||
43 | char partab[] = { | |
e39f9ea6 MT |
44 | 0001,0201,0201,0001,0201,0001,0001,0201, /* nul - bel */ |
45 | 0202,0004,0003,0201,0005,0206,0201,0001, /* bs - si */ | |
46 | 0201,0001,0001,0201,0001,0201,0201,0001, /* dle - etb */ | |
47 | 0001,0201,0201,0001,0201,0001,0001,0201, /* can - us */ | |
48 | 0200,0000,0000,0200,0000,0200,0200,0000, /* sp - ' */ | |
49 | 0000,0200,0200,0000,0200,0000,0000,0200, /* ( - / */ | |
50 | 0100,0300,0300,0100,0300,0100,0100,0300, /* 0 - 7 */ | |
51 | 0300,0100,0000,0200,0000,0200,0200,0000, /* 8 - ? */ | |
52 | 0200,0100,0100,0300,0100,0300,0300,0100, /* @ - G */ | |
53 | 0100,0300,0300,0100,0300,0100,0100,0300, /* H - O */ | |
54 | 0100,0300,0300,0100,0300,0100,0100,0300, /* P - W */ | |
55 | 0300,0100,0100,0200,0000,0200,0200,0300, /* X - _ */ | |
56 | 0000,0300,0300,0100,0300,0100,0100,0300, /* ` - g */ | |
57 | 0300,0100,0100,0300,0100,0300,0300,0100, /* h - o */ | |
58 | 0300,0100,0100,0300,0100,0300,0300,0100, /* p - w */ | |
59 | 0100,0300,0300,0000,0200,0000,0000,0201, /* x - del */ | |
8bba2b8f | 60 | /* |
e39f9ea6 | 61 | * meta chars |
8bba2b8f | 62 | */ |
e39f9ea6 MT |
63 | 0001,0201,0201,0001,0201,0001,0001,0201, /* nul - bel */ |
64 | 0202,0004,0003,0201,0005,0206,0201,0001, /* bs - si */ | |
65 | 0201,0001,0001,0201,0001,0201,0201,0001, /* dle - etb */ | |
66 | 0001,0201,0201,0001,0201,0001,0001,0201, /* can - us */ | |
67 | 0200,0000,0000,0200,0000,0200,0200,0000, /* sp - ' */ | |
68 | 0000,0200,0200,0000,0200,0000,0000,0200, /* ( - / */ | |
69 | 0100,0300,0300,0100,0300,0100,0100,0300, /* 0 - 7 */ | |
70 | 0300,0100,0000,0200,0000,0200,0200,0000, /* 8 - ? */ | |
71 | 0200,0100,0100,0300,0100,0300,0300,0100, /* @ - G */ | |
72 | 0100,0300,0300,0100,0300,0100,0100,0300, /* H - O */ | |
73 | 0100,0300,0300,0100,0300,0100,0100,0300, /* P - W */ | |
74 | 0300,0100,0100,0200,0000,0200,0200,0300, /* X - _ */ | |
75 | 0000,0300,0300,0100,0300,0100,0100,0300, /* ` - g */ | |
76 | 0300,0100,0100,0300,0100,0300,0300,0100, /* h - o */ | |
77 | 0300,0100,0100,0300,0100,0300,0300,0100, /* p - w */ | |
78 | 0100,0300,0300,0000,0200,0000,0000,0201, /* x - del */ | |
89dc6dfb BJ |
79 | }; |
80 | ||
adf4bc89 | 81 | extern struct tty *constty; /* temporary virtual console */ |
2c6a4e11 MT |
82 | extern char partab[], maptab[]; |
83 | ||
e39f9ea6 MT |
84 | /* |
85 | * Is 'c' a line delimiter ("break" character)? | |
86 | */ | |
87 | #define ttbreakc(c) (c == '\n' || CCEQ(cc[VEOF], c) || \ | |
88 | CCEQ(cc[VEOL], c) || CCEQ(cc[VEOL2], c)) | |
89 | ||
2c6a4e11 MT |
90 | /* |
91 | * Debugging aids | |
92 | */ | |
93 | #define dprintf if (tp->t_trace & TTRACE_IO)printf | |
94 | ||
95 | /* | |
96 | * Is 'c' a line delimiter ("break" character)? | |
97 | */ | |
98 | #define ttbreakc(c) (c == '\n' || CCEQ(cc[VEOF], c) || \ | |
99 | CCEQ(cc[VEOL], c) || CCEQ(cc[VEOL2], c)) | |
adf4bc89 | 100 | |
89dc6dfb | 101 | ttychars(tp) |
becb115c | 102 | struct tty *tp; |
89dc6dfb | 103 | { |
2c6a4e11 | 104 | bcopy(ttydefchars, tp->t_cc, sizeof(ttydefchars)); |
89dc6dfb BJ |
105 | } |
106 | ||
107 | /* | |
2c6a4e11 | 108 | * |
50e2732b | 109 | * Wait for output to drain, then flush input waiting. |
89dc6dfb | 110 | */ |
88a7a62a | 111 | ttywflush(tp) |
66ad69d6 | 112 | struct tty *tp; |
89dc6dfb BJ |
113 | { |
114 | ||
88a7a62a SL |
115 | ttywait(tp); |
116 | ttyflush(tp, FREAD); | |
117 | } | |
118 | ||
e39f9ea6 MT |
119 | /* |
120 | * Wait for output to drain. | |
121 | */ | |
2c6a4e11 MT |
122 | /* |
123 | * Wait for output to drain. | |
124 | */ | |
88a7a62a SL |
125 | ttywait(tp) |
126 | register struct tty *tp; | |
127 | { | |
66ad69d6 | 128 | int s = spltty(); |
88a7a62a | 129 | |
5de287d9 | 130 | while ((tp->t_outq.c_cc || tp->t_state&TS_BUSY) && |
66ad69d6 MT |
131 | (tp->t_state&TS_CARR_ON || tp->t_cflag&CLOCAL) && |
132 | tp->t_oproc) { | |
50e2732b | 133 | (*tp->t_oproc)(tp); |
941944c9 | 134 | tp->t_state |= TS_ASLEEP; |
50e2732b BJ |
135 | sleep((caddr_t)&tp->t_outq, TTOPRI); |
136 | } | |
875a1e2c | 137 | splx(s); |
89dc6dfb BJ |
138 | } |
139 | ||
140 | /* | |
becb115c | 141 | * Flush all TTY queues |
89dc6dfb | 142 | */ |
88a7a62a | 143 | ttyflush(tp, rw) |
4b72e2f9 | 144 | register struct tty *tp; |
89dc6dfb | 145 | { |
50e2732b BJ |
146 | register s; |
147 | ||
4f3a716e | 148 | s = spltty(); |
50e2732b BJ |
149 | if (rw & FREAD) { |
150 | while (getc(&tp->t_canq) >= 0) | |
151 | ; | |
66ad69d6 | 152 | ttwakeup(tp); |
50e2732b BJ |
153 | } |
154 | if (rw & FWRITE) { | |
66ad69d6 | 155 | wakeup((caddr_t)&tp->t_outq); /* XXX? what about selwakeup? */ |
941944c9 | 156 | tp->t_state &= ~TS_TTSTOP; |
39697bd8 | 157 | (*cdevsw[major(tp->t_dev)].d_stop)(tp, rw); |
50e2732b BJ |
158 | while (getc(&tp->t_outq) >= 0) |
159 | ; | |
160 | } | |
161 | if (rw & FREAD) { | |
162 | while (getc(&tp->t_rawq) >= 0) | |
163 | ; | |
becb115c | 164 | tp->t_rocount = 0; |
50e2732b | 165 | tp->t_rocol = 0; |
becb115c | 166 | tp->t_state &= ~TS_LOCAL; |
50e2732b BJ |
167 | } |
168 | splx(s); | |
89dc6dfb BJ |
169 | } |
170 | ||
50e2732b BJ |
171 | /* |
172 | * Send stop character on input overflow. | |
173 | */ | |
174 | ttyblock(tp) | |
4b72e2f9 | 175 | register struct tty *tp; |
89dc6dfb | 176 | { |
50e2732b | 177 | register x; |
becb115c | 178 | |
50e2732b BJ |
179 | x = tp->t_rawq.c_cc + tp->t_canq.c_cc; |
180 | if (tp->t_rawq.c_cc > TTYHOG) { | |
88a7a62a | 181 | ttyflush(tp, FREAD|FWRITE); |
941944c9 | 182 | tp->t_state &= ~TS_TBLOCK; |
50e2732b | 183 | } |
600d5712 MK |
184 | /* |
185 | * Block further input iff: | |
186 | * Current input > threshold AND input is available to user program | |
187 | */ | |
28b2d854 | 188 | if (x >= TTYHOG/2 && |
2c6a4e11 MT |
189 | (!(tp->t_lflag&ICANON)) || (tp->t_canq.c_cc > 0) && |
190 | tp->t_cc[VSTOP] != POSIX_V_DISABLE) { | |
191 | if (putc(tp->t_cc[VSTOP], &tp->t_outq)==0) { | |
600d5712 MK |
192 | tp->t_state |= TS_TBLOCK; |
193 | ttstart(tp); | |
194 | } | |
50e2732b | 195 | } |
89dc6dfb BJ |
196 | } |
197 | ||
101ba270 | 198 | /* |
50e2732b BJ |
199 | * Restart typewriter output following a delay |
200 | * timeout. | |
201 | * The name of the routine is passed to the timeout | |
202 | * subroutine and it is called during a clock interrupt. | |
101ba270 | 203 | */ |
50e2732b | 204 | ttrstrt(tp) |
66ad69d6 | 205 | struct tty *tp; |
101ba270 BJ |
206 | { |
207 | ||
becb115c SL |
208 | if (tp == 0) |
209 | panic("ttrstrt"); | |
941944c9 | 210 | tp->t_state &= ~TS_TIMEOUT; |
50e2732b | 211 | ttstart(tp); |
101ba270 BJ |
212 | } |
213 | ||
89dc6dfb | 214 | /* |
50e2732b BJ |
215 | * Start output on the typewriter. It is used from the top half |
216 | * after some characters have been put on the output queue, | |
217 | * from the interrupt routine to transmit the next | |
218 | * character, and after a timeout has finished. | |
89dc6dfb | 219 | */ |
50e2732b | 220 | ttstart(tp) |
66ad69d6 | 221 | struct tty *tp; |
89dc6dfb | 222 | { |
8062c8a7 | 223 | |
b482b2c8 | 224 | if (tp->t_oproc) /* kludge for pty */ |
50e2732b | 225 | (*tp->t_oproc)(tp); |
89dc6dfb BJ |
226 | } |
227 | ||
228 | /* | |
50e2732b | 229 | * Common code for tty ioctls. |
89dc6dfb | 230 | */ |
49c84d3f | 231 | /*ARGSUSED*/ |
4b72e2f9 SL |
232 | ttioctl(tp, com, data, flag) |
233 | register struct tty *tp; | |
234 | caddr_t data; | |
89dc6dfb | 235 | { |
89dc6dfb | 236 | extern int nldisp; |
e39f9ea6 | 237 | int softset = 0; |
2c6a4e11 | 238 | int soft; |
849cbd39 | 239 | int s, error; |
89dc6dfb | 240 | |
adf4bc89 | 241 | |
50e2732b BJ |
242 | /* |
243 | * If the ioctl involves modification, | |
4f3a716e | 244 | * hang if in the background. |
50e2732b | 245 | */ |
4b72e2f9 | 246 | switch (com) { |
50e2732b | 247 | |
2c6a4e11 | 248 | case TIOCSETD: |
50e2732b | 249 | case TIOCFLUSH: |
8203fe05 | 250 | case TIOCSTI: |
f9eea644 | 251 | case TIOCSWINSZ: |
2c6a4e11 MT |
252 | case TIOCSETA: |
253 | case TIOCSETAW: | |
254 | case TIOCSETAF: | |
255 | case TIOCSETAS: | |
256 | case TIOCSETAWS: | |
257 | case TIOCSETAFS: | |
e39f9ea6 MT |
258 | while (u.u_procp->p_pgid != tp->t_pgid && |
259 | tp == u.u_ttyp && | |
260 | u.u_procp->p_pgrp->pg_jobc && | |
50e2732b | 261 | (u.u_procp->p_flag&SVFORK) == 0 && |
52c041cd MK |
262 | !(u.u_procp->p_sigignore & sigmask(SIGTTOU)) && |
263 | !(u.u_procp->p_sigmask & sigmask(SIGTTOU))) { | |
e39f9ea6 | 264 | pgsignal(u.u_procp->p_pgrp, SIGTTOU); |
50e2732b BJ |
265 | sleep((caddr_t)&lbolt, TTOPRI); |
266 | } | |
267 | break; | |
268 | } | |
269 | ||
becb115c SL |
270 | /* |
271 | * Process the ioctl. | |
272 | */ | |
4b72e2f9 | 273 | switch (com) { |
89dc6dfb | 274 | |
fc6972ae | 275 | /* get discipline number */ |
89dc6dfb | 276 | case TIOCGETD: |
4b72e2f9 | 277 | *(int *)data = tp->t_line; |
89dc6dfb BJ |
278 | break; |
279 | ||
fc6972ae | 280 | /* set line discipline */ |
4b72e2f9 SL |
281 | case TIOCSETD: { |
282 | register int t = *(int *)data; | |
2c6a4e11 | 283 | dev_t dev = tp->t_dev; |
e39f9ea6 | 284 | dev_t dev = tp->t_dev; |
becb115c | 285 | int error = 0; |
4b72e2f9 | 286 | |
e39f9ea6 | 287 | if ((unsigned)t >= nldisp) |
4a003df3 | 288 | return (ENXIO); |
2eaeef4d MK |
289 | if (t != tp->t_line) { |
290 | s = spltty(); | |
291 | (*linesw[tp->t_line].l_close)(tp); | |
292 | error = (*linesw[t].l_open)(dev, tp); | |
293 | if (error) { | |
2c6a4e11 | 294 | (void)(*linesw[tp->t_line].l_open)(dev, tp); |
2eaeef4d MK |
295 | splx(s); |
296 | return (error); | |
297 | } | |
298 | tp->t_line = t; | |
4a003df3 | 299 | splx(s); |
4a003df3 | 300 | } |
2c6a4e11 MT |
301 | if (tp->t_trace & TTRACE_STATE) |
302 | ttytrace(com, tp); | |
89dc6dfb | 303 | break; |
4b72e2f9 | 304 | } |
89dc6dfb | 305 | |
fc6972ae | 306 | /* prevent more opens on channel */ |
152c2598 BJ |
307 | case TIOCEXCL: |
308 | tp->t_state |= TS_XCLUDE; | |
309 | break; | |
310 | ||
311 | case TIOCNXCL: | |
312 | tp->t_state &= ~TS_XCLUDE; | |
313 | break; | |
314 | ||
89dc6dfb | 315 | case TIOCHPCL: |
2c6a4e11 | 316 | tp->t_cflag |= HUPCL; |
89dc6dfb BJ |
317 | break; |
318 | ||
7d973a4d | 319 | case TIOCFLUSH: { |
4b72e2f9 SL |
320 | register int flags = *(int *)data; |
321 | ||
322 | if (flags == 0) | |
7d973a4d | 323 | flags = FREAD|FWRITE; |
4b72e2f9 SL |
324 | else |
325 | flags &= FREAD|FWRITE; | |
88a7a62a | 326 | ttyflush(tp, flags); |
89dc6dfb | 327 | break; |
4568c08e | 328 | } |
89dc6dfb | 329 | |
66ad69d6 MT |
330 | case FIOASYNC: |
331 | if (*(int *)data) | |
332 | tp->t_state |= TS_ASYNC; | |
333 | else | |
334 | tp->t_state &= ~TS_ASYNC; | |
335 | break; | |
336 | ||
337 | case FIONBIO: | |
338 | break; /* XXX remove */ | |
339 | ||
fc6972ae | 340 | /* return number of characters immediately available */ |
4b72e2f9 SL |
341 | case FIONREAD: |
342 | *(off_t *)data = ttnread(tp); | |
8062c8a7 | 343 | break; |
8062c8a7 | 344 | |
b968e450 SL |
345 | case TIOCOUTQ: |
346 | *(int *)data = tp->t_outq.c_cc; | |
347 | break; | |
348 | ||
a8d3bf7f | 349 | case TIOCSTOP: |
4f3a716e | 350 | s = spltty(); |
becb115c | 351 | if ((tp->t_state&TS_TTSTOP) == 0) { |
bfcf09ee BJ |
352 | tp->t_state |= TS_TTSTOP; |
353 | (*cdevsw[major(tp->t_dev)].d_stop)(tp, 0); | |
354 | } | |
4b72e2f9 | 355 | splx(s); |
bfcf09ee BJ |
356 | break; |
357 | ||
a8d3bf7f | 358 | case TIOCSTART: |
4f3a716e | 359 | s = spltty(); |
2c6a4e11 | 360 | if ((tp->t_state&TS_TTSTOP) || (tp->t_lflag&FLUSHO)) { |
bfcf09ee | 361 | tp->t_state &= ~TS_TTSTOP; |
2c6a4e11 | 362 | tp->t_lflag &= ~FLUSHO; |
bfcf09ee BJ |
363 | ttstart(tp); |
364 | } | |
4b72e2f9 | 365 | splx(s); |
bfcf09ee BJ |
366 | break; |
367 | ||
8203fe05 SL |
368 | /* |
369 | * Simulate typing of a character at the terminal. | |
370 | */ | |
371 | case TIOCSTI: | |
477d62ec KM |
372 | if (u.u_uid && (flag & FREAD) == 0) |
373 | return (EPERM); | |
8203fe05 SL |
374 | if (u.u_uid && u.u_ttyp != tp) |
375 | return (EACCES); | |
becb115c | 376 | (*linesw[tp->t_line].l_rint)(*(char *)data, tp); |
8203fe05 SL |
377 | break; |
378 | ||
2c6a4e11 MT |
379 | case TIOCGETA: { |
380 | struct termios *t = (struct termios *)data; | |
381 | bcopy(&tp->t_termio, t, sizeof(struct termios)); | |
382 | if (tp->t_trace & TTRACE_STATE) | |
383 | ttytrace(com, tp); | |
384 | break; | |
385 | } | |
386 | ||
2c6a4e11 MT |
387 | if (com == TIOCSETAF || com == TIOCSETAFS) |
388 | ttywflush(tp); | |
389 | else { | |
390 | if (com == TIOCSETAW || com == TIOCSETAWS) | |
391 | ttywait(tp); | |
392 | if ((t->c_lflag&ICANON) != (tp->t_lflag&ICANON)) | |
393 | if (t->c_lflag&ICANON) { | |
394 | tp->t_lflag |= PENDIN; | |
395 | ttwakeup(tp); | |
396 | } | |
397 | else { | |
398 | struct clist tq; | |
399 | ||
400 | catq(&tp->t_rawq, &tp->t_canq); | |
401 | tq = tp->t_rawq; | |
402 | tp->t_rawq = tp->t_canq; | |
403 | tp->t_canq = tq; | |
404 | } | |
88a7a62a | 405 | } |
2c6a4e11 MT |
406 | tp->t_iflag = t->c_iflag; |
407 | tp->t_oflag = t->c_oflag; | |
408 | tp->t_lflag = t->c_lflag; | |
409 | bcopy(t->c_cc, tp->t_cc, sizeof(t->c_cc)); | |
410 | if (!soft) { | |
411 | tp->t_cflag = t->c_cflag; | |
412 | tp->t_ispeed = t->c_ispeed; | |
413 | tp->t_ospeed = t->c_ospeed; | |
88a7a62a | 414 | } |
e39f9ea6 MT |
415 | tp->t_iflag = t->c_iflag; |
416 | tp->t_oflag = t->c_oflag; | |
417 | tp->t_lflag = t->c_lflag; | |
418 | bcopy(t->c_cc, tp->t_cc, sizeof(t->c_cc)); | |
88a7a62a | 419 | splx(s); |
2c6a4e11 MT |
420 | if (tp->t_trace & TTRACE_STATE) |
421 | ttytrace(com, tp); | |
88a7a62a SL |
422 | break; |
423 | } | |
424 | ||
4f3a716e | 425 | /* |
e39f9ea6 | 426 | * Set terminal process group. |
4f3a716e | 427 | */ |
245aeefa | 428 | case TIOCSPGRP: { |
e39f9ea6 MT |
429 | register struct proc *p = u.u_procp; |
430 | register struct pgrp *pgrp = pgfind(*(int *)data); | |
431 | ||
432 | if (u.u_uid && | |
433 | (tp != u.u_ttyp || | |
434 | (pgrp && pgrp->pg_session != p->p_session))) { | |
435 | if (u.u_ttyp == NULL) | |
436 | return (ENOTTY); | |
437 | else | |
438 | return (EPERM); | |
439 | } | |
440 | tp->t_pgid = *(int *)data; | |
88a7a62a | 441 | break; |
245aeefa | 442 | } |
88a7a62a SL |
443 | |
444 | case TIOCGPGRP: | |
e39f9ea6 | 445 | *(int *)data = tp->t_pgid; |
88a7a62a SL |
446 | break; |
447 | ||
f9eea644 | 448 | case TIOCSWINSZ: |
245aeefa JB |
449 | if (bcmp((caddr_t)&tp->t_winsize, data, |
450 | sizeof (struct winsize))) { | |
f9eea644 | 451 | tp->t_winsize = *(struct winsize *)data; |
e39f9ea6 | 452 | gsignal(tp->t_pgid, SIGWINCH); |
f9eea644 JB |
453 | } |
454 | break; | |
455 | ||
456 | case TIOCGWINSZ: | |
457 | *(struct winsize *)data = tp->t_winsize; | |
458 | break; | |
459 | ||
adf4bc89 MK |
460 | case TIOCCONS: |
461 | if (*(int *)data) { | |
462 | if (constty != NULL) | |
463 | return (EBUSY); | |
464 | #ifndef UCONSOLE | |
849cbd39 KM |
465 | if (error = suser(u.u_cred, &u.u_acflag)) |
466 | return (error); | |
adf4bc89 MK |
467 | #endif |
468 | constty = tp; | |
469 | } else if (tp == constty) | |
1eebc1a7 | 470 | constty = NULL; |
adf4bc89 MK |
471 | break; |
472 | ||
e39f9ea6 MT |
473 | #ifdef COMPAT_43 |
474 | case TIOCGETP: | |
475 | case TIOCSETP: | |
476 | case TIOCSETN: | |
477 | case TIOCGETC: | |
478 | case TIOCSETC: | |
479 | case TIOCSLTC: | |
480 | case TIOCGLTC: | |
481 | case TIOCLBIS: | |
482 | case TIOCLBIC: | |
483 | case TIOCLSET: | |
484 | case TIOCLGET: | |
485 | case TIOCGETDCOMPAT: | |
486 | case TIOCSETDCOMPAT: | |
487 | return(ttcompat(tp, com, data, flag)); | |
488 | #endif | |
489 | ||
2c6a4e11 MT |
490 | /* allow old ioctls for now */ |
491 | case TIOCGETP: | |
492 | case TIOCSETP: | |
493 | case TIOCSETN: | |
494 | case TIOCGETC: | |
495 | case TIOCSETC: | |
496 | case TIOCSLTC: | |
497 | case TIOCGLTC: | |
498 | case TIOCLBIS: | |
499 | case TIOCLBIC: | |
500 | case TIOCLSET: | |
501 | case TIOCLGET: | |
502 | return(ottioctl(tp, com, data, flag)); | |
503 | ||
89dc6dfb | 504 | default: |
fc6972ae | 505 | return (-1); |
89dc6dfb | 506 | } |
fc6972ae | 507 | return (0); |
89dc6dfb | 508 | } |
e1d74936 | 509 | |
2c6a4e11 MT |
510 | /* |
511 | * DEBUG - to be removed | |
512 | */ | |
513 | ttytrace(ioc, tp) | |
514 | struct tty *tp; | |
515 | { | |
516 | register u_char *cc = tp->t_cc; | |
517 | char comm[MAXCOMLEN+1]; | |
518 | static int seq = 0; | |
519 | ||
520 | bcopy(u.u_comm, comm, MAXCOMLEN+1); | |
521 | comm[MAXCOMLEN] = '\0'; | |
522 | ||
523 | /* trace changes to line disciplines */ | |
524 | if (ioc == TIOCSETD) { | |
525 | log(LOG_LOCAL4|LOG_DEBUG, "%s:%x:%x:%x:%x\n", | |
526 | comm, ioc, u.u_procp->p_pid, tp->t_dev, tp->t_line); | |
527 | return; | |
528 | } | |
529 | ||
530 | /* | |
531 | * format for the trace record is: | |
532 | * | |
533 | * u_comm:ioctl:pid:dev_t:ldisc:iflag:oflag:lflag:cflag:ispeed: | |
534 | * ospeed:cc's...:seq | |
535 | * | |
536 | * u_comm is a string and all other values are hex. "cc's..." | |
537 | * stands for control chars 0 through NCC-1. seq is a sequence # | |
538 | * to force syslogd to log every entry (rather than hold them to | |
539 | * print "last message repeated...". | |
540 | */ | |
541 | 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", | |
542 | comm, ioc, u.u_procp->p_pid, tp->t_dev, tp->t_line, | |
543 | tp->t_iflag, tp->t_oflag, tp->t_lflag, tp->t_cflag, | |
544 | tp->t_ispeed, tp->t_ospeed, cc[0], cc[1], cc[2], cc[3], | |
545 | cc[4], cc[5], cc[6], cc[7], cc[8], cc[9], cc[10], cc[11], | |
546 | cc[12], cc[13], cc[14], cc[15], cc[16], cc[17], cc[18], | |
547 | cc[19], seq++); | |
548 | } | |
549 | ||
e1d74936 BJ |
550 | ttnread(tp) |
551 | struct tty *tp; | |
552 | { | |
553 | int nread = 0; | |
554 | ||
2c6a4e11 | 555 | if (tp->t_lflag & PENDIN) |
e1d74936 BJ |
556 | ttypend(tp); |
557 | nread = tp->t_canq.c_cc; | |
2c6a4e11 | 558 | if (tp->t_lflag & ICANON == 0) |
e1d74936 BJ |
559 | nread += tp->t_rawq.c_cc; |
560 | return (nread); | |
561 | } | |
562 | ||
941944c9 | 563 | ttselect(dev, rw) |
e1d74936 | 564 | dev_t dev; |
941944c9 | 565 | int rw; |
e1d74936 BJ |
566 | { |
567 | register struct tty *tp = &cdevsw[major(dev)].d_ttys[minor(dev)]; | |
568 | int nread; | |
4f3a716e | 569 | int s = spltty(); |
e1d74936 | 570 | |
941944c9 | 571 | switch (rw) { |
e1d74936 BJ |
572 | |
573 | case FREAD: | |
574 | nread = ttnread(tp); | |
66ad69d6 MT |
575 | if (nread > 0 || |
576 | (!(tp->t_cflag&CLOCAL) && !(tp->t_state&TS_CARR_ON))) | |
941944c9 | 577 | goto win; |
89b8a44c | 578 | if (tp->t_rsel && tp->t_rsel->p_wchan == (caddr_t)&selwait) |
941944c9 | 579 | tp->t_state |= TS_RCOLL; |
e1d74936 BJ |
580 | else |
581 | tp->t_rsel = u.u_procp; | |
941944c9 | 582 | break; |
e1d74936 | 583 | |
941944c9 | 584 | case FWRITE: |
e39f9ea6 | 585 | if (tp->t_outq.c_cc <= tp->t_lowat) |
941944c9 | 586 | goto win; |
941944c9 BJ |
587 | if (tp->t_wsel && tp->t_wsel->p_wchan == (caddr_t)&selwait) |
588 | tp->t_state |= TS_WCOLL; | |
589 | else | |
590 | tp->t_wsel = u.u_procp; | |
591 | break; | |
e1d74936 | 592 | } |
941944c9 BJ |
593 | splx(s); |
594 | return (0); | |
595 | win: | |
596 | splx(s); | |
597 | return (1); | |
e1d74936 | 598 | } |
8bba2b8f | 599 | |
4147b3f6 | 600 | /* |
605d7712 | 601 | * Initial open of tty, or (re)entry to line discipline. |
4147b3f6 BJ |
602 | */ |
603 | ttyopen(dev, tp) | |
4b72e2f9 SL |
604 | dev_t dev; |
605 | register struct tty *tp; | |
4147b3f6 | 606 | { |
4147b3f6 | 607 | |
4147b3f6 | 608 | tp->t_dev = dev; |
e39f9ea6 | 609 | |
4147b3f6 | 610 | tp->t_state &= ~TS_WOPEN; |
4f3a716e MK |
611 | if ((tp->t_state & TS_ISOPEN) == 0) { |
612 | tp->t_state |= TS_ISOPEN; | |
f9eea644 | 613 | bzero((caddr_t)&tp->t_winsize, sizeof(tp->t_winsize)); |
2c6a4e11 MT |
614 | /* |
615 | * CHANGE: used to do a ttywflush() if it was the | |
616 | * old (old) line discipline. | |
617 | */ | |
4f3a716e | 618 | } |
fc6972ae | 619 | return (0); |
4147b3f6 BJ |
620 | } |
621 | ||
605d7712 MK |
622 | /* |
623 | * "close" a line discipline | |
624 | */ | |
625 | ttylclose(tp) | |
626 | register struct tty *tp; | |
627 | { | |
628 | ||
629 | ttywflush(tp); | |
605d7712 MK |
630 | } |
631 | ||
4147b3f6 BJ |
632 | /* |
633 | * clean tp on last close | |
634 | */ | |
635 | ttyclose(tp) | |
4b72e2f9 | 636 | register struct tty *tp; |
4147b3f6 | 637 | { |
adf4bc89 MK |
638 | if (constty == tp) |
639 | constty = NULL; | |
605d7712 | 640 | ttyflush(tp, FREAD|FWRITE); |
e39f9ea6 | 641 | tp->t_pgid = 0; |
4147b3f6 BJ |
642 | tp->t_state = 0; |
643 | } | |
644 | ||
605d7712 MK |
645 | /* |
646 | * Handle modem control transition on a tty. | |
647 | * Flag indicates new state of carrier. | |
648 | * Returns 0 if the line should be turned off, otherwise 1. | |
649 | */ | |
650 | ttymodem(tp, flag) | |
651 | register struct tty *tp; | |
652 | { | |
653 | ||
2c6a4e11 | 654 | if ((tp->t_state&TS_WOPEN) == 0 && (tp->t_lflag & MDMBUF)) { |
605d7712 MK |
655 | /* |
656 | * MDMBUF: do flow control according to carrier flag | |
657 | */ | |
658 | if (flag) { | |
659 | tp->t_state &= ~TS_TTSTOP; | |
660 | ttstart(tp); | |
661 | } else if ((tp->t_state&TS_TTSTOP) == 0) { | |
662 | tp->t_state |= TS_TTSTOP; | |
663 | (*cdevsw[major(tp->t_dev)].d_stop)(tp, 0); | |
664 | } | |
665 | } else if (flag == 0) { | |
666 | /* | |
667 | * Lost carrier. | |
668 | */ | |
669 | tp->t_state &= ~TS_CARR_ON; | |
670 | if (tp->t_state & TS_ISOPEN) { | |
2c6a4e11 | 671 | if ((tp->t_lflag & NOHANG) == 0) { |
e39f9ea6 MT |
672 | gsignal(tp->t_pgid, SIGHUP); |
673 | gsignal(tp->t_pgid, SIGCONT); | |
605d7712 MK |
674 | ttyflush(tp, FREAD|FWRITE); |
675 | return (0); | |
676 | } | |
677 | } | |
678 | } else { | |
679 | /* | |
680 | * Carrier now on. | |
681 | */ | |
682 | tp->t_state |= TS_CARR_ON; | |
66ad69d6 | 683 | ttwakeup(tp); |
605d7712 MK |
684 | } |
685 | return (1); | |
686 | } | |
687 | ||
e3f2038d MK |
688 | /* |
689 | * Default modem control routine (for other line disciplines). | |
690 | * Return argument flag, to turn off device on carrier drop. | |
691 | */ | |
2f54b5e8 MK |
692 | nullmodem(tp, flag) |
693 | register struct tty *tp; | |
e3f2038d MK |
694 | int flag; |
695 | { | |
696 | ||
697 | if (flag) | |
698 | tp->t_state |= TS_CARR_ON; | |
699 | else | |
700 | tp->t_state &= ~TS_CARR_ON; | |
701 | return (flag); | |
702 | } | |
703 | ||
4147b3f6 BJ |
704 | /* |
705 | * reinput pending characters after state switch | |
4f3a716e | 706 | * call at spltty(). |
4147b3f6 BJ |
707 | */ |
708 | ttypend(tp) | |
4b72e2f9 | 709 | register struct tty *tp; |
4147b3f6 BJ |
710 | { |
711 | struct clist tq; | |
712 | register c; | |
713 | ||
2c6a4e11 | 714 | tp->t_lflag &= ~PENDIN; |
becb115c | 715 | tp->t_state |= TS_TYPEN; |
4147b3f6 BJ |
716 | tq = tp->t_rawq; |
717 | tp->t_rawq.c_cc = 0; | |
718 | tp->t_rawq.c_cf = tp->t_rawq.c_cl = 0; | |
719 | while ((c = getc(&tq)) >= 0) | |
720 | ttyinput(c, tp); | |
becb115c | 721 | tp->t_state &= ~TS_TYPEN; |
4147b3f6 BJ |
722 | } |
723 | ||
724 | /* | |
e39f9ea6 | 725 | * |
2c6a4e11 | 726 | * |
becb115c SL |
727 | * Place a character on raw TTY input queue, |
728 | * putting in delimiters and waking up top | |
729 | * half as needed. Also echo if required. | |
730 | * The arguments are the character and the | |
731 | * appropriate tty structure. | |
4147b3f6 BJ |
732 | */ |
733 | ttyinput(c, tp) | |
4b72e2f9 SL |
734 | register c; |
735 | register struct tty *tp; | |
4147b3f6 | 736 | { |
2c6a4e11 MT |
737 | register int iflag = tp->t_iflag; |
738 | register int lflag = tp->t_lflag; | |
739 | register u_char *cc = tp->t_cc; | |
740 | int i, err; | |
4147b3f6 | 741 | |
becb115c SL |
742 | /* |
743 | * If input is pending take it first. | |
744 | */ | |
2c6a4e11 | 745 | if (lflag&PENDIN) |
4147b3f6 | 746 | ttypend(tp); |
e39f9ea6 MT |
747 | /* |
748 | * Gather stats. | |
749 | */ | |
2c6a4e11 | 750 | |
4147b3f6 | 751 | tk_nin++; |
e39f9ea6 MT |
752 | if (lflag&ICANON) { |
753 | tk_cancc++; | |
754 | tp->t_cancc++; | |
755 | } else { | |
756 | tk_rawcc++; | |
757 | tp->t_rawcc++; | |
758 | } | |
becb115c | 759 | /* |
2c6a4e11 | 760 | * Handle exceptional conditions (break, parity, framing). |
becb115c | 761 | */ |
2c6a4e11 MT |
762 | if (err = (c&TTY_ERRORMASK)) { |
763 | c &= TTY_CHARMASK; | |
764 | if (err&TTY_FE && !c) { /* break */ | |
765 | if (iflag&IGNBRK) | |
766 | goto endcase; | |
767 | else if (iflag&BRKINT && lflag&ISIG && | |
768 | (cc[VINTR] != POSIX_V_DISABLE)) | |
769 | c = cc[VINTR]; | |
770 | else | |
771 | c = 0; | |
772 | } else if ((err&TTY_PE && iflag&INPCK) || err&TTY_FE) { | |
773 | if (iflag&IGNPAR) | |
774 | goto endcase; | |
775 | else if (iflag&PARMRK) { | |
776 | ttyinput(0377, tp); | |
777 | ttyinput(0, tp); | |
778 | } else | |
779 | c = 0; | |
4147b3f6 | 780 | } |
becb115c | 781 | } |
2c6a4e11 MT |
782 | dprintf("<%o>\n", c); |
783 | ||
784 | /* | |
785 | * In tandem mode, check high water mark. | |
786 | */ | |
787 | if (iflag&IXOFF) | |
788 | ttyblock(tp); | |
789 | ||
becb115c | 790 | /* |
e39f9ea6 | 791 | * In tandem mode, check high water mark. |
becb115c | 792 | */ |
2c6a4e11 | 793 | if ((tp->t_state&TS_TYPEN) == 0 && (iflag&ISTRIP)) |
becb115c SL |
794 | c &= 0177; |
795 | /* | |
796 | * Check for literal nexting very first | |
797 | */ | |
798 | if (tp->t_state&TS_LNCH) { | |
e39f9ea6 | 799 | c |= TTY_QUOTE; |
becb115c SL |
800 | tp->t_state &= ~TS_LNCH; |
801 | } | |
becb115c SL |
802 | /* |
803 | * Scan for special characters. This code | |
804 | * is really just a big case statement with | |
805 | * non-constant cases. The bottom of the | |
806 | * case statement is labeled ``endcase'', so goto | |
807 | * it after a case match, or similar. | |
808 | */ | |
2c6a4e11 MT |
809 | |
810 | /* | |
811 | * Extensions to POSIX input modes which aren't controlled | |
812 | * by ICANON, ISIG, or IXON. | |
813 | */ | |
814 | if (iflag&IEXTEN) { | |
815 | if (CCEQ(cc[VLNEXT],c) && (iflag&ISTRIP)) { | |
816 | if (lflag&ECHO) | |
817 | ttyout("^\b", tp); /*XXX - presumes too much */ | |
becb115c SL |
818 | tp->t_state |= TS_LNCH; |
819 | goto endcase; | |
820 | } | |
2c6a4e11 MT |
821 | if (CCEQ(cc[VFLUSHO],c)) { |
822 | if (lflag&FLUSHO) | |
823 | tp->t_lflag &= ~FLUSHO; | |
4147b3f6 | 824 | else { |
88a7a62a | 825 | ttyflush(tp, FWRITE); |
4147b3f6 | 826 | ttyecho(c, tp); |
becb115c | 827 | if (tp->t_rawq.c_cc + tp->t_canq.c_cc) |
4147b3f6 | 828 | ttyretype(tp); |
2c6a4e11 | 829 | tp->t_lflag |= FLUSHO; |
4147b3f6 | 830 | } |
becb115c SL |
831 | goto startoutput; |
832 | } | |
2c6a4e11 MT |
833 | } |
834 | ||
835 | /* | |
836 | * Signals. | |
837 | */ | |
838 | if (lflag&ISIG) { | |
839 | if (CCEQ(cc[VINTR], c) || CCEQ(cc[VQUIT], c)) { | |
840 | if ((lflag&NOFLSH) == 0) | |
841 | ttyflush(tp, FREAD|FWRITE); | |
842 | ttyecho(c, tp); | |
843 | gsignal(tp->t_pgrp, CCEQ(cc[VINTR],c) ? | |
844 | SIGINT : SIGQUIT); | |
845 | goto endcase; | |
846 | } | |
847 | if (CCEQ(cc[VSUSP],c)) { | |
848 | if ((lflag&NOFLSH) == 0) | |
88a7a62a | 849 | ttyflush(tp, FREAD); |
4147b3f6 | 850 | ttyecho(c, tp); |
e39f9ea6 | 851 | gsignal(tp->t_pgid, SIGTSTP); |
becb115c SL |
852 | goto endcase; |
853 | } | |
854 | } | |
becb115c SL |
855 | /* |
856 | * Handle start/stop characters. | |
857 | */ | |
2c6a4e11 MT |
858 | if (iflag&IXON) { |
859 | if (CCEQ(cc[VSTOP],c)) { | |
860 | if ((tp->t_state&TS_TTSTOP) == 0) { | |
861 | tp->t_state |= TS_TTSTOP; | |
862 | (*cdevsw[major(tp->t_dev)].d_stop)(tp, 0); | |
863 | return; | |
864 | } | |
865 | if (!CCEQ(cc[VSTART], c)) | |
866 | return; | |
867 | /* | |
868 | * if VSTART == VSTOP we toggle | |
869 | */ | |
870 | goto endcase; | |
becb115c | 871 | } |
2c6a4e11 MT |
872 | if (CCEQ(cc[VSTART], c)) |
873 | goto restartoutput; | |
becb115c | 874 | } |
becb115c | 875 | /* |
2c6a4e11 | 876 | * IGNCR, ICRNL, & INLCR |
becb115c | 877 | */ |
2c6a4e11 MT |
878 | if (c == '\r') { |
879 | if (iflag&IGNCR) | |
880 | goto endcase; | |
881 | else if (iflag&ICRNL) | |
882 | c = '\n'; | |
becb115c | 883 | } |
2c6a4e11 MT |
884 | else if (c == '\n' && iflag&INLCR) |
885 | c = '\r'; | |
e39f9ea6 MT |
886 | else if (c == '\n' && iflag&INLCR) |
887 | c = '\r'; | |
becb115c | 888 | /* |
2c6a4e11 | 889 | * Non canonical mode, don't process line editing |
becb115c | 890 | * characters; check high water mark for wakeup. |
2c6a4e11 | 891 | * |
e39f9ea6 | 892 | * |
becb115c | 893 | */ |
2c6a4e11 | 894 | if (!(lflag&ICANON)) { |
becb115c | 895 | if (tp->t_rawq.c_cc > TTYHOG) { |
2c6a4e11 | 896 | if (iflag&IMAXBEL) { |
e39f9ea6 | 897 | if (tp->t_outq.c_cc < tp->t_hiwat) |
2c6a4e11 MT |
898 | (void) ttyoutput(CTRL('g'), tp); |
899 | } else | |
900 | ttyflush(tp, FREAD | FWRITE); | |
e39f9ea6 MT |
901 | } else { |
902 | if (putc(c, &tp->t_rawq) >= 0) { | |
903 | ttwakeup(tp); | |
904 | ttyecho(c, tp); | |
905 | } | |
4147b3f6 | 906 | } |
becb115c SL |
907 | goto endcase; |
908 | } | |
becb115c | 909 | /* |
2c6a4e11 | 910 | * From here on down canonical mode character |
becb115c SL |
911 | * processing takes place. |
912 | */ | |
2c6a4e11 MT |
913 | |
914 | /* | |
915 | * Oldstyle quoting of erase, kill, and eof chars. | |
916 | * | |
917 | * Historically is '\' , but can be changed (read: disabled) | |
918 | * with the VQUOTE subscript. | |
919 | */ | |
2c6a4e11 MT |
920 | |
921 | /* | |
922 | * erase (^H / ^?) | |
923 | */ | |
924 | if (CCEQ(cc[VERASE], c)) { | |
becb115c SL |
925 | if (tp->t_rawq.c_cc) |
926 | ttyrub(unputc(&tp->t_rawq), tp); | |
927 | goto endcase; | |
928 | } | |
66ad69d6 MT |
929 | if (lflag&ECHOKE && tp->t_rawq.c_cc == tp->t_rocount && |
930 | !(lflag&ECHOPRT)) { | |
becb115c SL |
931 | while (tp->t_rawq.c_cc) |
932 | ttyrub(unputc(&tp->t_rawq), tp); | |
933 | } else { | |
934 | ttyecho(c, tp); | |
2c6a4e11 MT |
935 | if (lflag&ECHOK || lflag&ECHOKE) |
936 | ttyecho('\n', tp); | |
becb115c SL |
937 | while (getc(&tp->t_rawq) > 0) |
938 | ; | |
939 | tp->t_rocount = 0; | |
940 | } | |
941 | tp->t_state &= ~TS_LOCAL; | |
942 | goto endcase; | |
943 | } | |
becb115c | 944 | /* |
2c6a4e11 | 945 | * word erase (^W) |
becb115c | 946 | */ |
2c6a4e11 MT |
947 | c = unputc(&tp->t_rawq); |
948 | } while (c != ' ' && c != '\t'); | |
949 | (void) putc(c, &tp->t_rawq); | |
950 | goto endcase; | |
951 | } | |
952 | /* | |
953 | * reprint line (^R) | |
954 | */ | |
955 | if (CCEQ(cc[VREPRINT], c)) { | |
956 | ttyretype(tp); | |
957 | goto endcase; | |
becb115c | 958 | } |
e39f9ea6 MT |
959 | /* |
960 | * reprint line (^R) | |
961 | */ | |
962 | if (CCEQ(cc[VREPRINT], c)) { | |
963 | ttyretype(tp); | |
964 | goto endcase; | |
965 | } | |
becb115c SL |
966 | /* |
967 | * Check for input buffer overflow | |
968 | */ | |
7c9f96c0 | 969 | if (tp->t_rawq.c_cc+tp->t_canq.c_cc >= TTYHOG) { |
2c6a4e11 MT |
970 | if (iflag&IMAXBEL) { |
971 | if (tp->t_outq.c_cc < TTHIWAT(tp)) | |
972 | (void) ttyoutput(CTRL('g'), tp); | |
973 | } else | |
974 | ttyflush(tp, FREAD | FWRITE); | |
becb115c | 975 | goto endcase; |
7c9f96c0 | 976 | } |
becb115c SL |
977 | /* |
978 | * Put data char in q for user and | |
979 | * wakeup on seeing a line delimiter. | |
980 | */ | |
981 | if (putc(c, &tp->t_rawq) >= 0) { | |
2c6a4e11 | 982 | if (ttbreakc(c)) { |
becb115c SL |
983 | tp->t_rocount = 0; |
984 | catq(&tp->t_rawq, &tp->t_canq); | |
4147b3f6 | 985 | ttwakeup(tp); |
becb115c SL |
986 | } else if (tp->t_rocount++ == 0) |
987 | tp->t_rocol = tp->t_col; | |
2c6a4e11 MT |
988 | if (CCEQ(cc[VQUOTE], c) && (iflag&ISTRIP)) |
989 | tp->t_state |= TS_QUOT; /* '\' escape */ | |
becb115c | 990 | if (tp->t_state&TS_ERASE) { |
e39f9ea6 MT |
991 | /* |
992 | * end of prterase \.../ | |
993 | */ | |
2c6a4e11 MT |
994 | /* |
995 | * end of prterase \.../ | |
996 | */ | |
becb115c SL |
997 | tp->t_state &= ~TS_ERASE; |
998 | (void) ttyoutput('/', tp); | |
999 | } | |
1000 | i = tp->t_col; | |
4147b3f6 | 1001 | ttyecho(c, tp); |
2c6a4e11 MT |
1002 | if (CCEQ(cc[VEOF], c) && lflag&ECHO) { |
1003 | /* | |
1004 | * Place the cursor over the '^' of the ^D. | |
1005 | */ | |
becb115c SL |
1006 | i = MIN(2, tp->t_col - i); |
1007 | while (i > 0) { | |
1008 | (void) ttyoutput('\b', tp); | |
1009 | i--; | |
1010 | } | |
1011 | } | |
4147b3f6 | 1012 | } |
becb115c SL |
1013 | endcase: |
1014 | /* | |
2c6a4e11 | 1015 | * IXANY means allow any character to restart output. |
becb115c | 1016 | */ |
2c6a4e11 MT |
1017 | if (tp->t_state&TS_TTSTOP && (iflag&IXANY == 0) |
1018 | && cc[VSTART] != cc[VSTOP]) | |
4147b3f6 | 1019 | return; |
2c6a4e11 | 1020 | |
becb115c | 1021 | restartoutput: |
4147b3f6 | 1022 | tp->t_state &= ~TS_TTSTOP; |
2c6a4e11 | 1023 | tp->t_lflag &= ~FLUSHO; |
becb115c | 1024 | startoutput: |
4147b3f6 BJ |
1025 | ttstart(tp); |
1026 | } | |
1027 | ||
1028 | /* | |
becb115c | 1029 | * Put character on TTY output queue, adding delays, |
4147b3f6 | 1030 | * expanding tabs, and handling the CR/NL bit. |
becb115c SL |
1031 | * This is called both from the top half for output, |
1032 | * and from interrupt level for echoing. | |
4147b3f6 BJ |
1033 | * The arguments are the character and the tty structure. |
1034 | * Returns < 0 if putc succeeds, otherwise returns char to resend | |
1035 | * Must be recursive. | |
1036 | */ | |
1037 | ttyoutput(c, tp) | |
1038 | register c; | |
1039 | register struct tty *tp; | |
1040 | { | |
1041 | register char *colp; | |
1042 | register ctype; | |
2c6a4e11 MT |
1043 | if (!(tp->t_oflag&OPOST)) { |
1044 | if (tp->t_lflag&FLUSHO) | |
4147b3f6 BJ |
1045 | return (-1); |
1046 | if (putc(c, &tp->t_outq)) | |
4b72e2f9 | 1047 | return (c); |
4147b3f6 | 1048 | tk_nout++; |
e39f9ea6 | 1049 | tp->t_outcc++; |
4147b3f6 BJ |
1050 | return (-1); |
1051 | } | |
2c6a4e11 | 1052 | c &= 0377; |
4147b3f6 BJ |
1053 | /* |
1054 | * Turn tabs to spaces as required | |
1055 | */ | |
2c6a4e11 | 1056 | if (c == '\t' && tp->t_oflag&OXTABS ) { |
4147b3f6 BJ |
1057 | register int s; |
1058 | ||
1059 | c = 8 - (tp->t_col&7); | |
2c6a4e11 | 1060 | if ((tp->t_lflag&FLUSHO) == 0) { |
4f3a716e | 1061 | s = spltty(); /* don't interrupt tabs */ |
4147b3f6 BJ |
1062 | c -= b_to_q(" ", c, &tp->t_outq); |
1063 | tk_nout += c; | |
e39f9ea6 | 1064 | tp->t_outcc += c; |
4147b3f6 BJ |
1065 | splx(s); |
1066 | } | |
1067 | tp->t_col += c; | |
1068 | return (c ? -1 : '\t'); | |
1069 | } | |
e39f9ea6 MT |
1070 | if (c == CEOT && oflag&ONOEOT) |
1071 | return(-1); | |
4147b3f6 | 1072 | tk_nout++; |
e39f9ea6 | 1073 | tp->t_outcc++; |
2c6a4e11 | 1074 | #ifdef notdef |
4147b3f6 BJ |
1075 | /* |
1076 | * turn <nl> to <cr><lf> if desired. | |
1077 | */ | |
2c6a4e11 | 1078 | #endif |
e39f9ea6 MT |
1079 | if ((tp->t_lflag&FLUSHO) == 0 && putc(c, &tp->t_outq)) |
1080 | return (c); | |
2c6a4e11 | 1081 | if ((tp->t_lflag&FLUSHO) == 0 && putc(c, &tp->t_outq)) |
4147b3f6 BJ |
1082 | return (c); |
1083 | /* | |
1084 | * Calculate delays. | |
1085 | * The numbers here represent clock ticks | |
1086 | * and are not necessarily optimal for all terminals. | |
becb115c SL |
1087 | * |
1088 | * SHOULD JUST ALLOW USER TO SPECIFY DELAYS | |
e39f9ea6 MT |
1089 | * |
1090 | * (actually, should THROW AWAY terminals which need delays) | |
4147b3f6 BJ |
1091 | */ |
1092 | colp = &tp->t_col; | |
1093 | ctype = partab[c]; | |
1094 | c = 0; | |
1095 | switch (ctype&077) { | |
1096 | ||
1097 | case ORDINARY: | |
1098 | (*colp)++; | |
1099 | ||
1100 | case CONTROL: | |
1101 | break; | |
1102 | ||
1103 | case BACKSPACE: | |
1104 | if (*colp) | |
1105 | (*colp)--; | |
1106 | break; | |
1107 | ||
3686c829 SL |
1108 | /* |
1109 | * This macro is close enough to the correct thing; | |
1110 | * it should be replaced by real user settable delays | |
1111 | * in any event... | |
1112 | */ | |
1113 | #define mstohz(ms) (((ms) * hz) >> 10) | |
4147b3f6 BJ |
1114 | case NEWLINE: |
1115 | ctype = (tp->t_flags >> 8) & 03; | |
4b72e2f9 | 1116 | if (ctype == 1) { /* tty 37 */ |
8011f5df MK |
1117 | if (*colp > 0) { |
1118 | c = (((unsigned)*colp) >> 4) + 3; | |
1119 | if ((unsigned)c > 6) | |
1120 | c = 6; | |
1121 | } | |
becb115c | 1122 | } else if (ctype == 2) /* vt05 */ |
3686c829 | 1123 | c = mstohz(100); |
4147b3f6 BJ |
1124 | *colp = 0; |
1125 | break; | |
1126 | ||
1127 | case TAB: | |
1128 | ctype = (tp->t_flags >> 10) & 03; | |
4b72e2f9 | 1129 | if (ctype == 1) { /* tty 37 */ |
4147b3f6 | 1130 | c = 1 - (*colp | ~07); |
4b72e2f9 | 1131 | if (c < 5) |
4147b3f6 BJ |
1132 | c = 0; |
1133 | } | |
1134 | *colp |= 07; | |
1135 | (*colp)++; | |
1136 | break; | |
1137 | ||
1138 | case VTAB: | |
becb115c | 1139 | if (tp->t_flags&VTDELAY) /* tty 37 */ |
4147b3f6 BJ |
1140 | c = 0177; |
1141 | break; | |
1142 | ||
1143 | case RETURN: | |
1144 | ctype = (tp->t_flags >> 12) & 03; | |
becb115c | 1145 | if (ctype == 1) /* tn 300 */ |
3686c829 | 1146 | c = mstohz(83); |
becb115c | 1147 | else if (ctype == 2) /* ti 700 */ |
3686c829 | 1148 | c = mstohz(166); |
becb115c | 1149 | else if (ctype == 3) { /* concept 100 */ |
4147b3f6 | 1150 | int i; |
becb115c | 1151 | |
4147b3f6 | 1152 | if ((i = *colp) >= 0) |
becb115c | 1153 | for (; i < 9; i++) |
4147b3f6 BJ |
1154 | (void) putc(0177, &tp->t_outq); |
1155 | } | |
1156 | *colp = 0; | |
1157 | } | |
2c6a4e11 | 1158 | if (c && (tp->t_lflag&FLUSHO) == 0) |
e39f9ea6 | 1159 | (void) putc(c|TTY_QUOTE, &tp->t_outq); |
4147b3f6 BJ |
1160 | return (-1); |
1161 | } | |
3686c829 | 1162 | #undef mstohz |
4147b3f6 BJ |
1163 | |
1164 | /* | |
1165 | * Called from device's read routine after it has | |
1166 | * calculated the tty-structure given as argument. | |
1167 | */ | |
66ad69d6 | 1168 | ttread(tp, uio, flag) |
4b72e2f9 | 1169 | register struct tty *tp; |
d6d7360b | 1170 | struct uio *uio; |
4147b3f6 BJ |
1171 | { |
1172 | register struct clist *qp; | |
2c6a4e11 MT |
1173 | register int c, t_flags; |
1174 | register long lflag = tp->t_lflag; | |
1175 | register long iflag = tp->t_iflag; | |
1176 | register u_char *cc = tp->t_cc; | |
875a1e2c | 1177 | int s, first, error = 0; |
4147b3f6 | 1178 | |
2c6a4e11 | 1179 | |
4147b3f6 | 1180 | loop: |
66ad69d6 | 1181 | s = spltty(); |
becb115c | 1182 | /* |
66ad69d6 | 1183 | * take pending input first |
becb115c | 1184 | */ |
2c6a4e11 | 1185 | if (tp->t_lflag&PENDIN) |
4147b3f6 | 1186 | ttypend(tp); |
66ad69d6 MT |
1187 | /* |
1188 | * Handle carrier. | |
1189 | */ | |
1190 | if (!(tp->t_state&TS_CARR_ON) && !(tp->t_cflag&CLOCAL)) { | |
1191 | if (tp->t_state&TS_ISOPEN) { | |
1192 | splx(s); | |
1193 | return (0); /* EOF */ | |
c4ec2128 | 1194 | } else if (flag & IO_NDELAY) { |
66ad69d6 MT |
1195 | splx(s); |
1196 | return (EWOULDBLOCK); | |
1197 | } else { | |
1198 | /* | |
1199 | * sleep awaiting carrier | |
1200 | */ | |
1201 | sleep((caddr_t)&tp->t_rawq, TTIPRI); | |
1202 | splx(s); | |
1203 | goto loop; | |
1204 | } | |
1205 | } | |
875a1e2c | 1206 | splx(s); |
becb115c SL |
1207 | /* |
1208 | * Hang process if it's in the background. | |
1209 | */ | |
e39f9ea6 | 1210 | if (u.u_ttyp == tp && u.u_procp->p_pgid != tp->t_pgid) { |
52c041cd MK |
1211 | if ((u.u_procp->p_sigignore & sigmask(SIGTTIN)) || |
1212 | (u.u_procp->p_sigmask & sigmask(SIGTTIN)) || | |
e39f9ea6 | 1213 | u.u_procp->p_flag&SVFORK || u.u_procp->p_pgrp->pg_jobc == 0) |
840510a3 | 1214 | return (EIO); |
e39f9ea6 | 1215 | pgsignal(u.u_procp->p_pgrp, SIGTTIN); |
4147b3f6 | 1216 | sleep((caddr_t)&lbolt, TTIPRI); |
58786a81 | 1217 | goto loop; |
4147b3f6 | 1218 | } |
becb115c | 1219 | /* |
2c6a4e11 MT |
1220 | * If canonical, use the canonical queue, |
1221 | * else use the raw queue. | |
becb115c | 1222 | */ |
2c6a4e11 | 1223 | qp = lflag&ICANON ? &tp->t_canq : &tp->t_rawq; |
becb115c SL |
1224 | /* |
1225 | * No input, sleep on rawq awaiting hardware | |
1226 | * receipt and notification. | |
1227 | */ | |
4f3a716e | 1228 | s = spltty(); |
becb115c | 1229 | if (qp->c_cc <= 0) { |
66ad69d6 | 1230 | /** XXX ??? ask mike why TS_CARR_ON was (once) necessary here |
becb115c SL |
1231 | if ((tp->t_state&TS_CARR_ON) == 0 || |
1232 | (tp->t_state&TS_NBIO)) { | |
875a1e2c | 1233 | splx(s); |
becb115c | 1234 | return (EWOULDBLOCK); |
4147b3f6 | 1235 | } |
66ad69d6 | 1236 | **/ |
c4ec2128 | 1237 | if (flag & IO_NDELAY) { |
66ad69d6 MT |
1238 | splx(s); |
1239 | return (EWOULDBLOCK); | |
1240 | } | |
becb115c | 1241 | sleep((caddr_t)&tp->t_rawq, TTIPRI); |
875a1e2c | 1242 | splx(s); |
becb115c SL |
1243 | goto loop; |
1244 | } | |
875a1e2c | 1245 | splx(s); |
becb115c | 1246 | /* |
2c6a4e11 | 1247 | * Input present, check for input mapping and processing. |
becb115c SL |
1248 | */ |
1249 | first = 1; | |
1250 | while ((c = getc(qp)) >= 0) { | |
becb115c | 1251 | /* |
2c6a4e11 | 1252 | * delayed suspend (^Y) |
becb115c | 1253 | */ |
2c6a4e11 | 1254 | if (CCEQ(cc[VDSUSP], c) && lflag&ISIG) { |
e39f9ea6 | 1255 | gsignal(tp->t_pgid, SIGTSTP); |
becb115c SL |
1256 | if (first) { |
1257 | sleep((caddr_t)&lbolt, TTIPRI); | |
1258 | goto loop; | |
1259 | } | |
1260 | break; | |
4147b3f6 | 1261 | } |
becb115c | 1262 | /* |
2c6a4e11 | 1263 | * Interpret EOF only in canonical mode. |
becb115c | 1264 | */ |
2c6a4e11 | 1265 | if (CCEQ(cc[VEOF], c) && lflag&ICANON) |
becb115c SL |
1266 | break; |
1267 | /* | |
1268 | * Give user character. | |
1269 | */ | |
2c6a4e11 | 1270 | error = ureadc(iflag&ISTRIP ? c & 0177 : c , uio); |
becb115c SL |
1271 | if (error) |
1272 | break; | |
9ec65acb | 1273 | if (uio->uio_resid == 0) |
becb115c SL |
1274 | break; |
1275 | /* | |
2c6a4e11 | 1276 | * In canonical mode check for a "break character" |
becb115c SL |
1277 | * marking the end of a "line of input". |
1278 | */ | |
2c6a4e11 | 1279 | if (lflag&ICANON && ttbreakc(c)) { |
becb115c | 1280 | break; |
2c6a4e11 | 1281 | } |
e39f9ea6 | 1282 | } |
becb115c | 1283 | first = 0; |
4147b3f6 | 1284 | } |
becb115c SL |
1285 | /* |
1286 | * Look to unblock output now that (presumably) | |
1287 | * the input queue has gone down. | |
1288 | */ | |
2c6a4e11 MT |
1289 | if (tp->t_state&TS_TBLOCK && tp->t_rawq.c_cc < TTYHOG/5) { |
1290 | if (cc[VSTART] != POSIX_V_DISABLE | |
1291 | && putc(cc[VSTART], &tp->t_outq) == 0) { | |
4147b3f6 BJ |
1292 | tp->t_state &= ~TS_TBLOCK; |
1293 | ttstart(tp); | |
1294 | } | |
2c6a4e11 | 1295 | } |
e39f9ea6 | 1296 | } |
840510a3 | 1297 | return (error); |
4147b3f6 BJ |
1298 | } |
1299 | ||
605d7712 MK |
1300 | /* |
1301 | * Check the output queue on tp for space for a kernel message | |
1302 | * (from uprintf/tprintf). Allow some space over the normal | |
1303 | * hiwater mark so we don't lose messages due to normal flow | |
1304 | * control, but don't let the tty run amok. | |
ca9b16e5 MK |
1305 | * Sleeps here are not interruptible, but we return prematurely |
1306 | * if new signals come in. | |
605d7712 MK |
1307 | */ |
1308 | ttycheckoutq(tp, wait) | |
1309 | register struct tty *tp; | |
1310 | int wait; | |
1311 | { | |
ca9b16e5 | 1312 | int hiwat, s, oldsig; |
605d7712 | 1313 | |
e39f9ea6 | 1314 | hiwat = tp->t_hiwat; |
605d7712 | 1315 | s = spltty(); |
ca9b16e5 | 1316 | oldsig = u.u_procp->p_sig; |
605d7712 | 1317 | if (tp->t_outq.c_cc > hiwat + 200) |
fb1db32c MK |
1318 | while (tp->t_outq.c_cc > hiwat) { |
1319 | ttstart(tp); | |
ca9b16e5 | 1320 | if (wait == 0 || u.u_procp->p_sig != oldsig) { |
fb1db32c MK |
1321 | splx(s); |
1322 | return (0); | |
1323 | } | |
ca9b16e5 | 1324 | timeout(wakeup, (caddr_t)&tp->t_outq, hz); |
fb1db32c | 1325 | tp->t_state |= TS_ASLEEP; |
ca9b16e5 | 1326 | sleep((caddr_t)&tp->t_outq, PZERO - 1); |
605d7712 | 1327 | } |
605d7712 MK |
1328 | splx(s); |
1329 | return (1); | |
1330 | } | |
1331 | ||
4147b3f6 BJ |
1332 | /* |
1333 | * Called from the device's write routine after it has | |
1334 | * calculated the tty-structure given as argument. | |
1335 | */ | |
66ad69d6 | 1336 | ttwrite(tp, uio, flag) |
4b72e2f9 | 1337 | register struct tty *tp; |
becb115c | 1338 | register struct uio *uio; |
4147b3f6 | 1339 | { |
4147b3f6 | 1340 | register char *cp; |
c4ec2128 | 1341 | register int cc, ce; |
becb115c | 1342 | int i, hiwat, cnt, error, s; |
4147b3f6 | 1343 | char obuf[OBUFSIZ]; |
4147b3f6 | 1344 | |
e39f9ea6 | 1345 | hiwat = tp->t_hiwat; |
becb115c SL |
1346 | cnt = uio->uio_resid; |
1347 | error = 0; | |
4147b3f6 | 1348 | loop: |
66ad69d6 MT |
1349 | s = spltty(); |
1350 | if (!(tp->t_state&TS_CARR_ON) && !(tp->t_cflag&CLOCAL)) { | |
1351 | if (tp->t_state&TS_ISOPEN) { | |
1352 | splx(s); | |
1353 | return (EIO); | |
c4ec2128 | 1354 | } else if (flag & IO_NDELAY) { |
66ad69d6 MT |
1355 | splx(s); |
1356 | return (EWOULDBLOCK); | |
1357 | } else { | |
1358 | /* | |
1359 | * sleep awaiting carrier | |
1360 | */ | |
1361 | sleep((caddr_t)&tp->t_rawq, TTIPRI); | |
1362 | splx(s); | |
1363 | goto loop; | |
1364 | } | |
1365 | } | |
1366 | splx(s); | |
becb115c SL |
1367 | /* |
1368 | * Hang the process if it's in the background. | |
1369 | */ | |
2c6a4e11 | 1370 | (tp->t_lflag&TOSTOP) && (u.u_procp->p_flag&SVFORK)==0 && |
52c041cd | 1371 | !(u.u_procp->p_sigignore & sigmask(SIGTTOU)) && |
e39f9ea6 MT |
1372 | !(u.u_procp->p_sigmask & sigmask(SIGTTOU)) && |
1373 | u.u_procp->p_pgrp->pg_jobc) { | |
1374 | pgsignal(u.u_procp->p_pgrp, SIGTTOU); | |
4147b3f6 | 1375 | sleep((caddr_t)&lbolt, TTIPRI); |
93d2ecff | 1376 | goto loop; |
4147b3f6 | 1377 | } |
becb115c SL |
1378 | /* |
1379 | * Process the user's data in at most OBUFSIZ | |
1380 | * chunks. Perform lower case simulation and | |
1381 | * similar hacks. Keep track of high water | |
1382 | * mark, sleep on overflow awaiting device aid | |
1383 | * in acquiring new space. | |
1384 | */ | |
913ea2d1 | 1385 | while (uio->uio_resid > 0) { |
b482b2c8 MK |
1386 | if (tp->t_outq.c_cc > hiwat) { |
1387 | cc = 0; | |
1388 | goto ovhiwat; | |
1389 | } | |
becb115c SL |
1390 | /* |
1391 | * Grab a hunk of data from the user. | |
1392 | */ | |
913ea2d1 BJ |
1393 | cc = uio->uio_iov->iov_len; |
1394 | if (cc == 0) { | |
1395 | uio->uio_iovcnt--; | |
1396 | uio->uio_iov++; | |
93d2ecff | 1397 | if (uio->uio_iovcnt <= 0) |
913ea2d1 BJ |
1398 | panic("ttwrite"); |
1399 | continue; | |
1400 | } | |
1401 | if (cc > OBUFSIZ) | |
1402 | cc = OBUFSIZ; | |
4147b3f6 | 1403 | cp = obuf; |
c4ec2128 | 1404 | error = uiomove(cp, cc, uio); |
840510a3 | 1405 | if (error) |
4147b3f6 | 1406 | break; |
2c6a4e11 | 1407 | if (tp->t_lflag&FLUSHO) |
4147b3f6 | 1408 | continue; |
2c6a4e11 | 1409 | #ifdef notdef |
becb115c SL |
1410 | /* |
1411 | * If nothing fancy need be done, grab those characters we | |
1412 | * can handle without any of ttyoutput's processing and | |
1413 | * just transfer them to the output q. For those chars | |
1414 | * which require special processing (as indicated by the | |
1415 | * bits in partab), call ttyoutput. After processing | |
1416 | * a hunk of data, look for FLUSHO so ^O's will take effect | |
1417 | * immediately. | |
1418 | */ | |
1419 | while (cc > 0) { | |
2c6a4e11 | 1420 | if (!(tp->t_oflag&OPOST)) |
4147b3f6 BJ |
1421 | ce = cc; |
1422 | else { | |
3f36033f MK |
1423 | ce = cc - scanc((unsigned)cc, (u_char *)cp, |
1424 | (u_char *)partab, 077); | |
becb115c SL |
1425 | /* |
1426 | * If ce is zero, then we're processing | |
1427 | * a special character through ttyoutput. | |
1428 | */ | |
1429 | if (ce == 0) { | |
4147b3f6 BJ |
1430 | tp->t_rocount = 0; |
1431 | if (ttyoutput(*cp, tp) >= 0) { | |
93d2ecff JB |
1432 | /* no c-lists, wait a bit */ |
1433 | ttstart(tp); | |
1434 | sleep((caddr_t)&lbolt, TTOPRI); | |
1435 | if (cc != 0) { | |
1436 | uio->uio_iov->iov_base -= cc; | |
1437 | uio->uio_iov->iov_len += cc; | |
1438 | uio->uio_resid += cc; | |
1439 | uio->uio_offset -= cc; | |
1440 | } | |
1441 | goto loop; | |
4147b3f6 | 1442 | } |
becb115c | 1443 | cp++, cc--; |
2c6a4e11 | 1444 | if (tp->t_lflag&FLUSHO || |
becb115c | 1445 | tp->t_outq.c_cc > hiwat) |
4147b3f6 | 1446 | goto ovhiwat; |
becb115c | 1447 | continue; |
4147b3f6 BJ |
1448 | } |
1449 | } | |
becb115c SL |
1450 | /* |
1451 | * A bunch of normal characters have been found, | |
1452 | * transfer them en masse to the output queue and | |
1453 | * continue processing at the top of the loop. | |
1454 | * If there are any further characters in this | |
1455 | * <= OBUFSIZ chunk, the first should be a character | |
1456 | * requiring special handling by ttyoutput. | |
1457 | */ | |
4147b3f6 | 1458 | tp->t_rocount = 0; |
becb115c SL |
1459 | i = b_to_q(cp, ce, &tp->t_outq); |
1460 | ce -= i; | |
1461 | tp->t_col += ce; | |
1462 | cp += ce, cc -= ce, tk_nout += ce; | |
e39f9ea6 | 1463 | tp->t_outcc += ce; |
becb115c SL |
1464 | if (i > 0) { |
1465 | /* out of c-lists, wait a bit */ | |
4147b3f6 BJ |
1466 | ttstart(tp); |
1467 | sleep((caddr_t)&lbolt, TTOPRI); | |
93d2ecff JB |
1468 | uio->uio_iov->iov_base -= cc; |
1469 | uio->uio_iov->iov_len += cc; | |
1470 | uio->uio_resid += cc; | |
1471 | uio->uio_offset -= cc; | |
1472 | goto loop; | |
4147b3f6 | 1473 | } |
2c6a4e11 | 1474 | if (tp->t_lflag&FLUSHO || tp->t_outq.c_cc > hiwat) |
4147b3f6 BJ |
1475 | goto ovhiwat; |
1476 | } | |
2c6a4e11 | 1477 | ttstart(tp); |
e39f9ea6 | 1478 | ttstart(tp); |
4147b3f6 | 1479 | } |
840510a3 | 1480 | return (error); |
4147b3f6 | 1481 | ovhiwat: |
becb115c SL |
1482 | if (cc != 0) { |
1483 | uio->uio_iov->iov_base -= cc; | |
1484 | uio->uio_iov->iov_len += cc; | |
1485 | uio->uio_resid += cc; | |
1486 | uio->uio_offset -= cc; | |
1487 | } | |
b482b2c8 MK |
1488 | ttstart(tp); |
1489 | s = spltty(); | |
becb115c | 1490 | /* |
2c6a4e11 | 1491 | * This can only occur if FLUSHO is set in t_lflag, |
b482b2c8 | 1492 | * or if ttstart/oproc is synchronous (or very fast). |
becb115c | 1493 | */ |
4147b3f6 | 1494 | if (tp->t_outq.c_cc <= hiwat) { |
becb115c | 1495 | splx(s); |
4147b3f6 BJ |
1496 | goto loop; |
1497 | } | |
c4ec2128 | 1498 | if (flag & IO_NDELAY) { |
4f3a716e | 1499 | splx(s); |
913ea2d1 | 1500 | if (uio->uio_resid == cnt) |
840510a3 BJ |
1501 | return (EWOULDBLOCK); |
1502 | return (0); | |
4147b3f6 BJ |
1503 | } |
1504 | tp->t_state |= TS_ASLEEP; | |
1505 | sleep((caddr_t)&tp->t_outq, TTOPRI); | |
becb115c | 1506 | splx(s); |
4147b3f6 BJ |
1507 | goto loop; |
1508 | } | |
1509 | ||
1510 | /* | |
1511 | * Rubout one character from the rawq of tp | |
1512 | * as cleanly as possible. | |
1513 | */ | |
1514 | ttyrub(c, tp) | |
4b72e2f9 SL |
1515 | register c; |
1516 | register struct tty *tp; | |
4147b3f6 BJ |
1517 | { |
1518 | register char *cp; | |
1519 | register int savecol; | |
1520 | int s; | |
1521 | char *nextc(); | |
1522 | ||
2c6a4e11 | 1523 | if ((tp->t_lflag&ECHO) == 0) |
4147b3f6 | 1524 | return; |
2c6a4e11 | 1525 | if (tp->t_lflag&ECHOE) { |
4147b3f6 BJ |
1526 | if (tp->t_rocount == 0) { |
1527 | /* | |
1528 | * Screwed by ttwrite; retype | |
1529 | */ | |
1530 | ttyretype(tp); | |
1531 | return; | |
1532 | } | |
2c6a4e11 | 1533 | /* if tab or newline was escaped - XXX - not 8bit */ |
e39f9ea6 | 1534 | if (c == ('\t'|TTY_QUOTE) || c == ('\n'|TTY_QUOTE)) |
4147b3f6 | 1535 | ttyrubo(tp, 2); |
e39f9ea6 | 1536 | else switch (partab[c&=0377]&077) { |
4147b3f6 BJ |
1537 | |
1538 | case ORDINARY: | |
2c6a4e11 | 1539 | #ifdef notdef |
e39f9ea6 | 1540 | ttyrubo(tp, 1); |
4147b3f6 BJ |
1541 | break; |
1542 | ||
1543 | case VTAB: | |
1544 | case BACKSPACE: | |
1545 | case CONTROL: | |
1546 | case RETURN: | |
2c6a4e11 | 1547 | if (tp->t_lflag&ECHOCTL) |
4147b3f6 BJ |
1548 | ttyrubo(tp, 2); |
1549 | break; | |
1550 | ||
e39f9ea6 MT |
1551 | case TAB: { |
1552 | int c; | |
1553 | ||
4147b3f6 BJ |
1554 | if (tp->t_rocount < tp->t_rawq.c_cc) { |
1555 | ttyretype(tp); | |
1556 | return; | |
1557 | } | |
4f3a716e | 1558 | s = spltty(); |
4147b3f6 | 1559 | savecol = tp->t_col; |
becb115c | 1560 | tp->t_state |= TS_CNTTB; |
2c6a4e11 | 1561 | tp->t_lflag |= FLUSHO; |
4147b3f6 | 1562 | tp->t_col = tp->t_rocol; |
becb115c | 1563 | cp = tp->t_rawq.c_cf; |
2c6a4e11 | 1564 | tp->t_lflag &= ~FLUSHO; |
becb115c | 1565 | tp->t_state &= ~TS_CNTTB; |
4147b3f6 BJ |
1566 | splx(s); |
1567 | /* | |
1568 | * savecol will now be length of the tab | |
1569 | */ | |
1570 | savecol -= tp->t_col; | |
1571 | tp->t_col += savecol; | |
1572 | if (savecol > 8) | |
1573 | savecol = 8; /* overflow screw */ | |
1574 | while (--savecol >= 0) | |
1575 | (void) ttyoutput('\b', tp); | |
1576 | break; | |
e39f9ea6 | 1577 | } |
4147b3f6 BJ |
1578 | |
1579 | default: | |
66ad69d6 | 1580 | /* XXX */ |
e39f9ea6 MT |
1581 | printf("ttyrub: would panic c = %d, val = %d\n", |
1582 | c, partab[c&=0377]&077); | |
1583 | /*panic("ttyrub");*/ | |
4147b3f6 | 1584 | } |
2c6a4e11 | 1585 | } else if (tp->t_lflag&ECHOPRT) { |
becb115c | 1586 | if ((tp->t_state&TS_ERASE) == 0) { |
4147b3f6 | 1587 | (void) ttyoutput('\\', tp); |
becb115c | 1588 | tp->t_state |= TS_ERASE; |
4147b3f6 BJ |
1589 | } |
1590 | ttyecho(c, tp); | |
1591 | } else | |
2c6a4e11 | 1592 | ttyecho(tp->t_cc[VERASE], tp); |
4147b3f6 BJ |
1593 | tp->t_rocount--; |
1594 | } | |
1595 | ||
1596 | /* | |
1597 | * Crt back over cnt chars perhaps | |
1598 | * erasing them. | |
1599 | */ | |
1600 | ttyrubo(tp, cnt) | |
4b72e2f9 SL |
1601 | register struct tty *tp; |
1602 | int cnt; | |
4147b3f6 | 1603 | { |
2c6a4e11 | 1604 | register char *rubostring = tp->t_lflag&ECHOE ? "\b \b" : "\b"; |
4147b3f6 BJ |
1605 | |
1606 | while (--cnt >= 0) | |
e39f9ea6 | 1607 | ttyout("\b \b", tp); |
4147b3f6 BJ |
1608 | } |
1609 | ||
1610 | /* | |
1611 | * Reprint the rawq line. | |
1612 | * We assume c_cc has already been checked. | |
1613 | */ | |
1614 | ttyretype(tp) | |
4b72e2f9 | 1615 | register struct tty *tp; |
4147b3f6 BJ |
1616 | { |
1617 | register char *cp; | |
1618 | char *nextc(); | |
e39f9ea6 | 1619 | int s, c; |
4147b3f6 | 1620 | |
2c6a4e11 MT |
1621 | if (tp->t_cc[VREPRINT] != POSIX_V_DISABLE) |
1622 | ttyecho(tp->t_cc[VREPRINT], tp); | |
4147b3f6 | 1623 | (void) ttyoutput('\n', tp); |
4f3a716e | 1624 | s = spltty(); |
e39f9ea6 MT |
1625 | /*** XXX *** FIX *** NEXTC IS BROKEN - DOESN'T CHECK QUOTE |
1626 | BIT OF FIRST CHAR ****/ | |
1627 | for (cp = tp->t_canq.c_cf, c=(cp?*cp:0); cp; cp = nextc(&tp->t_canq, cp, &c)) { | |
1628 | ttyecho(c, tp); | |
1629 | } | |
1630 | for (cp = tp->t_rawq.c_cf, c=(cp?*cp:0); cp; cp = nextc(&tp->t_rawq, cp, &c)) { | |
1631 | ttyecho(c, tp); | |
1632 | } | |
becb115c | 1633 | tp->t_state &= ~TS_ERASE; |
4147b3f6 BJ |
1634 | splx(s); |
1635 | tp->t_rocount = tp->t_rawq.c_cc; | |
1636 | tp->t_rocol = 0; | |
1637 | } | |
1638 | ||
1639 | /* | |
2c6a4e11 | 1640 | * Echo a typed character to the terminal. |
4147b3f6 BJ |
1641 | */ |
1642 | ttyecho(c, tp) | |
4b72e2f9 SL |
1643 | register c; |
1644 | register struct tty *tp; | |
4147b3f6 | 1645 | { |
4147b3f6 | 1646 | c &= 0377; |
2c6a4e11 MT |
1647 | if ((tp->t_state&TS_CNTTB) == 0) |
1648 | tp->t_lflag &= ~FLUSHO; | |
1649 | if ((tp->t_lflag&ECHO) == 0 && !(tp->t_lflag&ECHONL && c == '\n')) | |
4147b3f6 | 1650 | return; |
2c6a4e11 | 1651 | if (tp->t_lflag&ECHOCTL) { |
e39f9ea6 | 1652 | if ((c&TTY_CHARMASK)<=037 && c!='\t' && c!='\n' || c==0177) { |
4147b3f6 | 1653 | (void) ttyoutput('^', tp); |
e39f9ea6 | 1654 | c &= TTY_CHARMASK; |
4147b3f6 BJ |
1655 | if (c == 0177) |
1656 | c = '?'; | |
2c6a4e11 | 1657 | #ifdef notdef |
2c6a4e11 | 1658 | #endif |
4147b3f6 BJ |
1659 | else |
1660 | c += 'A' - 1; | |
1661 | } | |
1662 | } | |
e39f9ea6 | 1663 | (void) ttyoutput(c, tp); |
4147b3f6 BJ |
1664 | * send string cp to tp |
1665 | */ | |
1666 | ttyout(cp, tp) | |
4b72e2f9 SL |
1667 | register char *cp; |
1668 | register struct tty *tp; | |
4147b3f6 BJ |
1669 | { |
1670 | register char c; | |
1671 | ||
1672 | while (c = *cp++) | |
1673 | (void) ttyoutput(c, tp); | |
1674 | } | |
1675 | ||
1676 | ttwakeup(tp) | |
1677 | struct tty *tp; | |
1678 | { | |
1679 | ||
1680 | if (tp->t_rsel) { | |
1681 | selwakeup(tp->t_rsel, tp->t_state&TS_RCOLL); | |
1682 | tp->t_state &= ~TS_RCOLL; | |
1683 | tp->t_rsel = 0; | |
1684 | } | |
88a7a62a | 1685 | if (tp->t_state & TS_ASYNC) |
e39f9ea6 | 1686 | gsignal(tp->t_pgid, SIGIO); |
4147b3f6 BJ |
1687 | wakeup((caddr_t)&tp->t_rawq); |
1688 | } | |
e39f9ea6 MT |
1689 | |
1690 | /* | |
1691 | * set tty hi and low water marks | |
1692 | * | |
1693 | * Try to arrange the dynamics so there's about one second | |
1694 | * from hi to low water. | |
1695 | * | |
1696 | */ | |
1697 | ttsetwater(tp) | |
1698 | struct tty *tp; | |
1699 | { | |
1700 | register cps = tp->t_ospeed / 10; | |
1701 | register x; | |
1702 | ||
1703 | #define clamp(x, h, l) ((x)>h ? h : ((x)<l) ? l : (x)) | |
1704 | tp->t_lowat = x = clamp(cps/2, TTMAXLOWAT, TTMINLOWAT); | |
1705 | x += cps; | |
1706 | x = clamp(x, TTMAXHIWAT, TTMINHIWAT); | |
1707 | tp->t_hiwat = roundup(x, CBSIZE); | |
1708 | #undef clamp | |
1709 | } | |
1710 | ||
1711 | ttspeedtab(speed, table) | |
1712 | struct speedtab table[]; | |
1713 | { | |
1714 | register int i; | |
1715 | ||
1716 | for (i = 0; table[i].sp_speed != -1; i++) | |
1717 | if (table[i].sp_speed == speed) | |
1718 | return(table[i].sp_code); | |
1719 | return(-1); | |
1720 | } |