1 /*- 2 * Copyright (c) 1982, 1986, 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)tty_compat.c 8.1 (Berkeley) 6/10/93 34 * $Id: tty_compat.c,v 1.17 1995/08/02 12:53:14 ache Exp $ 35 */ 36 37 /* 38 * mapping routines for old line discipline (yuck) 39 */ 40 #if defined(COMPAT_43) || defined(COMPAT_SUNOS) 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/ioctl.h> 45 #include <sys/proc.h> 46 #include <sys/tty.h> 47 #include <sys/termios.h> 48 #include <sys/file.h> 49 #include <sys/conf.h> 50 #include <sys/kernel.h> 51 #include <sys/syslog.h> 52 53 static int ttcompatgetflags __P((struct tty *tp)); 54 static void ttcompatsetflags __P((struct tty *tp, struct termios *t)); 55 static void ttcompatsetlflags __P((struct tty *tp, struct termios *t)); 56 static int ttcompatspeedtab __P((int speed, struct speedtab *table)); 57 58 int ttydebug = 0; 59 60 static struct speedtab compatspeeds[] = { 61 #define MAX_SPEED 17 62 { 115200, 17 }, 63 { 57600, 16 }, 64 { 38400, 15 }, 65 { 19200, 14 }, 66 { 9600, 13 }, 67 { 4800, 12 }, 68 { 2400, 11 }, 69 { 1800, 10 }, 70 { 1200, 9 }, 71 { 600, 8 }, 72 { 300, 7 }, 73 { 200, 6 }, 74 { 150, 5 }, 75 { 134, 4 }, 76 { 110, 3 }, 77 { 75, 2 }, 78 { 50, 1 }, 79 { 0, 0 }, 80 { -1, -1 }, 81 }; 82 static int compatspcodes[] = { 83 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 84 1800, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 85 }; 86 87 static int 88 ttcompatspeedtab(speed, table) 89 int speed; 90 register struct speedtab *table; 91 { 92 if (speed == 0) 93 return (0); /* hangup */ 94 for ( ; table->sp_speed > 0; table++) 95 if (table->sp_speed <= speed) /* nearest one, rounded down */ 96 return (table->sp_code); 97 return (1); /* 50, min and not hangup */ 98 } 99 100 int 101 ttsetcompat(tp, com, data, term) 102 register struct tty *tp; 103 int *com; 104 caddr_t data; 105 struct termios *term; 106 { 107 switch (*com) { 108 case TIOCSETP: 109 case TIOCSETN: { 110 register struct sgttyb *sg = (struct sgttyb *)data; 111 int speed; 112 113 if ((speed = sg->sg_ispeed) > MAX_SPEED || speed < 0) 114 return(EINVAL); 115 else if (speed != ttcompatspeedtab(tp->t_ispeed, compatspeeds)) 116 term->c_ispeed = compatspcodes[speed]; 117 else 118 term->c_ispeed = tp->t_ispeed; 119 if ((speed = sg->sg_ospeed) > MAX_SPEED || speed < 0) 120 return(EINVAL); 121 else if (speed != ttcompatspeedtab(tp->t_ospeed, compatspeeds)) 122 term->c_ospeed = compatspcodes[speed]; 123 else 124 term->c_ospeed = tp->t_ospeed; 125 term->c_cc[VERASE] = sg->sg_erase; 126 term->c_cc[VKILL] = sg->sg_kill; 127 tp->t_flags = (tp->t_flags&0xffff0000) | (sg->sg_flags&0xffff); 128 ttcompatsetflags(tp, term); 129 *com = (*com == TIOCSETP) ? TIOCSETAF : TIOCSETA; 130 break; 131 } 132 case TIOCSETC: { 133 struct tchars *tc = (struct tchars *)data; 134 register cc_t *cc; 135 136 cc = term->c_cc; 137 cc[VINTR] = tc->t_intrc; 138 cc[VQUIT] = tc->t_quitc; 139 cc[VSTART] = tc->t_startc; 140 cc[VSTOP] = tc->t_stopc; 141 cc[VEOF] = tc->t_eofc; 142 cc[VEOL] = tc->t_brkc; 143 if (tc->t_brkc == -1) 144 cc[VEOL2] = _POSIX_VDISABLE; 145 *com = TIOCSETA; 146 break; 147 } 148 case TIOCSLTC: { 149 struct ltchars *ltc = (struct ltchars *)data; 150 register cc_t *cc; 151 152 cc = term->c_cc; 153 cc[VSUSP] = ltc->t_suspc; 154 cc[VDSUSP] = ltc->t_dsuspc; 155 cc[VREPRINT] = ltc->t_rprntc; 156 cc[VDISCARD] = ltc->t_flushc; 157 cc[VWERASE] = ltc->t_werasc; 158 cc[VLNEXT] = ltc->t_lnextc; 159 *com = TIOCSETA; 160 break; 161 } 162 case TIOCLBIS: 163 case TIOCLBIC: 164 case TIOCLSET: 165 if (*com == TIOCLSET) 166 tp->t_flags = (tp->t_flags&0xffff) | *(int *)data<<16; 167 else { 168 tp->t_flags = 169 (ttcompatgetflags(tp)&0xffff0000)|(tp->t_flags&0xffff); 170 if (*com == TIOCLBIS) 171 tp->t_flags |= *(int *)data<<16; 172 else 173 tp->t_flags &= ~(*(int *)data<<16); 174 } 175 ttcompatsetlflags(tp, term); 176 *com = TIOCSETA; 177 break; 178 } 179 return 0; 180 } 181 182 /*ARGSUSED*/ 183 int 184 ttcompat(tp, com, data, flag) 185 register struct tty *tp; 186 int com; 187 caddr_t data; 188 int flag; 189 { 190 switch (com) { 191 case TIOCSETP: 192 case TIOCSETN: 193 case TIOCSETC: 194 case TIOCSLTC: 195 case TIOCLBIS: 196 case TIOCLBIC: 197 case TIOCLSET: { 198 struct termios term; 199 int error; 200 201 term = tp->t_termios; 202 if ((error = ttsetcompat(tp, &com, data, &term)) != 0) 203 return error; 204 return ttioctl(tp, com, &term, flag); 205 } 206 case TIOCGETP: { 207 register struct sgttyb *sg = (struct sgttyb *)data; 208 register cc_t *cc = tp->t_cc; 209 210 sg->sg_ospeed = ttcompatspeedtab(tp->t_ospeed, compatspeeds); 211 if (tp->t_ispeed == 0) 212 sg->sg_ispeed = sg->sg_ospeed; 213 else 214 sg->sg_ispeed = ttcompatspeedtab(tp->t_ispeed, compatspeeds); 215 sg->sg_erase = cc[VERASE]; 216 sg->sg_kill = cc[VKILL]; 217 sg->sg_flags = tp->t_flags = ttcompatgetflags(tp); 218 break; 219 } 220 case TIOCGETC: { 221 struct tchars *tc = (struct tchars *)data; 222 register cc_t *cc = tp->t_cc; 223 224 tc->t_intrc = cc[VINTR]; 225 tc->t_quitc = cc[VQUIT]; 226 tc->t_startc = cc[VSTART]; 227 tc->t_stopc = cc[VSTOP]; 228 tc->t_eofc = cc[VEOF]; 229 tc->t_brkc = cc[VEOL]; 230 break; 231 } 232 case TIOCGLTC: { 233 struct ltchars *ltc = (struct ltchars *)data; 234 register cc_t *cc = tp->t_cc; 235 236 ltc->t_suspc = cc[VSUSP]; 237 ltc->t_dsuspc = cc[VDSUSP]; 238 ltc->t_rprntc = cc[VREPRINT]; 239 ltc->t_flushc = cc[VDISCARD]; 240 ltc->t_werasc = cc[VWERASE]; 241 ltc->t_lnextc = cc[VLNEXT]; 242 break; 243 } 244 case TIOCLGET: 245 tp->t_flags = 246 (ttcompatgetflags(tp) & 0xffff0000UL) 247 | (tp->t_flags & 0xffff); 248 *(int *)data = tp->t_flags>>16; 249 if (ttydebug) 250 printf("CLGET: returning %x\n", *(int *)data); 251 break; 252 253 case OTIOCGETD: 254 *(int *)data = tp->t_line ? tp->t_line : 2; 255 break; 256 257 case OTIOCSETD: { 258 int ldisczero = 0; 259 260 return (ttioctl(tp, TIOCSETD, 261 *(int *)data == 2 ? (caddr_t)&ldisczero : data, flag)); 262 } 263 264 case OTIOCCONS: 265 *(int *)data = 1; 266 return (ttioctl(tp, TIOCCONS, data, flag)); 267 268 default: 269 return (-1); 270 } 271 return (0); 272 } 273 274 static int 275 ttcompatgetflags(tp) 276 register struct tty *tp; 277 { 278 register tcflag_t iflag = tp->t_iflag; 279 register tcflag_t lflag = tp->t_lflag; 280 register tcflag_t oflag = tp->t_oflag; 281 register tcflag_t cflag = tp->t_cflag; 282 register flags = 0; 283 284 if (iflag&IXOFF) 285 flags |= TANDEM; 286 if (iflag&ICRNL || oflag&ONLCR) 287 flags |= CRMOD; 288 if ((cflag&CSIZE) == CS8) { 289 flags |= PASS8; 290 if (iflag&ISTRIP) 291 flags |= ANYP; 292 } 293 else if (cflag&PARENB) { 294 if (iflag&INPCK) { 295 if (cflag&PARODD) 296 flags |= ODDP; 297 else 298 flags |= EVENP; 299 } else 300 flags |= EVENP | ODDP; 301 } 302 303 if ((lflag&ICANON) == 0) { 304 /* fudge */ 305 if (iflag&(INPCK|ISTRIP|IXON) || lflag&(IEXTEN|ISIG) 306 || cflag&(CSIZE|PARENB) != CS8) 307 flags |= CBREAK; 308 else 309 flags |= RAW; 310 } 311 if (!(flags&RAW) && !(oflag&OPOST) && cflag&(CSIZE|PARENB) == CS8) 312 flags |= LITOUT; 313 if (cflag&MDMBUF) 314 flags |= MDMBUF; 315 if ((cflag&HUPCL) == 0) 316 flags |= NOHANG; 317 if (oflag&OXTABS) 318 flags |= XTABS; 319 if (lflag&ECHOE) 320 flags |= CRTERA|CRTBS; 321 if (lflag&ECHOKE) 322 flags |= CRTKIL|CRTBS; 323 if (lflag&ECHOPRT) 324 flags |= PRTERA; 325 if (lflag&ECHOCTL) 326 flags |= CTLECH; 327 if ((iflag&IXANY) == 0) 328 flags |= DECCTQ; 329 flags |= lflag&(ECHO|TOSTOP|FLUSHO|PENDIN|NOFLSH); 330 if (ttydebug) 331 printf("getflags: %x\n", flags); 332 return (flags); 333 } 334 335 static void 336 ttcompatsetflags(tp, t) 337 register struct tty *tp; 338 register struct termios *t; 339 { 340 register flags = tp->t_flags; 341 register tcflag_t iflag = t->c_iflag; 342 register tcflag_t oflag = t->c_oflag; 343 register tcflag_t lflag = t->c_lflag; 344 register tcflag_t cflag = t->c_cflag; 345 346 if (flags & RAW) { 347 iflag = IGNBRK; 348 lflag &= ~(ECHOCTL|ISIG|ICANON|IEXTEN); 349 } else { 350 iflag &= ~(PARMRK|IGNPAR|IGNCR|INLCR); 351 iflag |= BRKINT|IXON|IMAXBEL; 352 lflag |= ISIG|IEXTEN|ECHOCTL; /* XXX was echoctl on ? */ 353 if (flags & XTABS) 354 oflag |= OXTABS; 355 else 356 oflag &= ~OXTABS; 357 if (flags & CBREAK) 358 lflag &= ~ICANON; 359 else 360 lflag |= ICANON; 361 if (flags&CRMOD) { 362 iflag |= ICRNL; 363 oflag |= ONLCR; 364 } else { 365 iflag &= ~ICRNL; 366 oflag &= ~ONLCR; 367 } 368 } 369 if (flags&ECHO) 370 lflag |= ECHO; 371 else 372 lflag &= ~ECHO; 373 374 cflag &= ~(CSIZE|PARENB); 375 if (flags&(RAW|LITOUT|PASS8)) { 376 cflag |= CS8; 377 if (!(flags&(RAW|PASS8)) 378 || (flags&(RAW|PASS8|ANYP)) == (PASS8|ANYP)) 379 iflag |= ISTRIP; 380 else 381 iflag &= ~ISTRIP; 382 if (flags&(RAW|LITOUT)) 383 oflag &= ~OPOST; 384 else 385 oflag |= OPOST; 386 } else { 387 cflag |= CS7|PARENB; 388 iflag |= ISTRIP; 389 oflag |= OPOST; 390 } 391 /* XXX don't set INPCK if RAW or PASS8? */ 392 if ((flags&(EVENP|ODDP)) == EVENP) { 393 iflag |= INPCK; 394 cflag &= ~PARODD; 395 } else if ((flags&(EVENP|ODDP)) == ODDP) { 396 iflag |= INPCK; 397 cflag |= PARODD; 398 } else 399 iflag &= ~INPCK; 400 if (flags&TANDEM) 401 iflag |= IXOFF; 402 else 403 iflag &= ~IXOFF; 404 if ((flags&DECCTQ) == 0) 405 iflag |= IXANY; 406 else 407 iflag &= ~IXANY; 408 t->c_iflag = iflag; 409 t->c_oflag = oflag; 410 t->c_lflag = lflag; 411 t->c_cflag = cflag; 412 } 413 414 static void 415 ttcompatsetlflags(tp, t) 416 register struct tty *tp; 417 register struct termios *t; 418 { 419 register flags = tp->t_flags; 420 register tcflag_t iflag = t->c_iflag; 421 register tcflag_t oflag = t->c_oflag; 422 register tcflag_t lflag = t->c_lflag; 423 register tcflag_t cflag = t->c_cflag; 424 425 iflag &= ~(PARMRK|IGNPAR|IGNCR|INLCR); 426 if (flags&CRTERA) 427 lflag |= ECHOE; 428 else 429 lflag &= ~ECHOE; 430 if (flags&CRTKIL) 431 lflag |= ECHOKE; 432 else 433 lflag &= ~ECHOKE; 434 if (flags&PRTERA) 435 lflag |= ECHOPRT; 436 else 437 lflag &= ~ECHOPRT; 438 if (flags&CTLECH) 439 lflag |= ECHOCTL; 440 else 441 lflag &= ~ECHOCTL; 442 if (flags&TANDEM) 443 iflag |= IXOFF; 444 else 445 iflag &= ~IXOFF; 446 if ((flags&DECCTQ) == 0) 447 iflag |= IXANY; 448 else 449 iflag &= ~IXANY; 450 if (flags & MDMBUF) 451 cflag |= MDMBUF; 452 else 453 cflag &= ~MDMBUF; 454 if (flags&NOHANG) 455 cflag &= ~HUPCL; 456 else 457 cflag |= HUPCL; 458 lflag &= ~(TOSTOP|FLUSHO|PENDIN|NOFLSH); 459 lflag |= flags&(TOSTOP|FLUSHO|PENDIN|NOFLSH); 460 461 /* 462 * The next if-else statement is copied from above so don't bother 463 * checking it separately. We could avoid fiddlling with the 464 * character size if the mode is already RAW or if neither the 465 * LITOUT bit or the PASS8 bit is being changed, but the delta of 466 * the change is not available here and skipping the RAW case would 467 * make the code different from above. 468 */ 469 cflag &= ~(CSIZE|PARENB); 470 if (flags&(RAW|LITOUT|PASS8)) { 471 cflag |= CS8; 472 if (!(flags&(RAW|PASS8)) 473 || (flags&(RAW|PASS8|ANYP)) == (PASS8|ANYP)) 474 iflag |= ISTRIP; 475 else 476 iflag &= ~ISTRIP; 477 if (flags&(RAW|LITOUT)) 478 oflag &= ~OPOST; 479 else 480 oflag |= OPOST; 481 } else { 482 cflag |= CS7|PARENB; 483 iflag |= ISTRIP; 484 oflag |= OPOST; 485 } 486 t->c_iflag = iflag; 487 t->c_oflag = oflag; 488 t->c_lflag = lflag; 489 t->c_cflag = cflag; 490 } 491 #endif /* COMPAT_43 || COMPAT_SUNOS */ 492