2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1982, 1986, 1991, 1993
5 * The Regents of the University of California. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * @(#)tty_compat.c 8.1 (Berkeley) 6/10/93
34 #include <sys/cdefs.h>
35 __FBSDID("$FreeBSD$");
38 * mapping routines for old line discipline (yuck)
41 #include <sys/param.h>
42 #include <sys/systm.h>
43 #include <sys/ioctl_compat.h>
45 #include <sys/kernel.h>
46 #include <sys/sysctl.h>
49 int sp_speed; /* Speed. */
50 int sp_code; /* Code. */
53 static int ttcompatgetflags(struct tty *tp);
54 static void ttcompatsetflags(struct tty *tp, struct termios *t);
55 static void ttcompatsetlflags(struct tty *tp, struct termios *t);
56 static int ttcompatspeedtab(int speed, struct speedtab *table);
58 static int ttydebug = 0;
59 SYSCTL_INT(_debug, OID_AUTO, ttydebug, CTLFLAG_RW, &ttydebug, 0, "");
61 static struct speedtab compatspeeds[] = {
83 static int compatspcodes[] = {
84 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200,
85 1800, 2400, 4800, 9600, 19200, 38400, 57600, 115200,
89 ttcompatspeedtab(int speed, struct speedtab *table)
92 return (0); /* hangup */
93 for ( ; table->sp_speed > 0; table++)
94 if (table->sp_speed <= speed) /* nearest one, rounded down */
95 return (table->sp_code);
96 return (1); /* 50, min and not hangup */
100 ttsetcompat(struct tty *tp, u_long *com, caddr_t data, struct termios *term)
105 struct sgttyb *sg = (struct sgttyb *)data;
108 if ((speed = sg->sg_ispeed) > MAX_SPEED || speed < 0)
110 else if (speed != ttcompatspeedtab(tp->t_termios.c_ispeed,
112 term->c_ispeed = compatspcodes[speed];
114 term->c_ispeed = tp->t_termios.c_ispeed;
115 if ((speed = sg->sg_ospeed) > MAX_SPEED || speed < 0)
117 else if (speed != ttcompatspeedtab(tp->t_termios.c_ospeed,
119 term->c_ospeed = compatspcodes[speed];
121 term->c_ospeed = tp->t_termios.c_ospeed;
122 term->c_cc[VERASE] = sg->sg_erase;
123 term->c_cc[VKILL] = sg->sg_kill;
124 tp->t_compatflags = (tp->t_compatflags&0xffff0000) |
125 (sg->sg_flags&0xffff);
126 ttcompatsetflags(tp, term);
127 *com = (*com == TIOCSETP) ? TIOCSETAF : TIOCSETA;
131 struct tchars *tc = (struct tchars *)data;
135 cc[VINTR] = tc->t_intrc;
136 cc[VQUIT] = tc->t_quitc;
137 cc[VSTART] = tc->t_startc;
138 cc[VSTOP] = tc->t_stopc;
139 cc[VEOF] = tc->t_eofc;
140 cc[VEOL] = tc->t_brkc;
141 if (tc->t_brkc == (char)_POSIX_VDISABLE)
142 cc[VEOL2] = _POSIX_VDISABLE;
147 struct ltchars *ltc = (struct ltchars *)data;
151 cc[VSUSP] = ltc->t_suspc;
152 cc[VDSUSP] = ltc->t_dsuspc;
153 cc[VREPRINT] = ltc->t_rprntc;
154 cc[VDISCARD] = ltc->t_flushc;
155 cc[VWERASE] = ltc->t_werasc;
156 cc[VLNEXT] = ltc->t_lnextc;
163 if (*com == TIOCLSET)
164 tp->t_compatflags = (tp->t_compatflags&0xffff) |
167 tp->t_compatflags = (ttcompatgetflags(tp)&0xffff0000) |
168 (tp->t_compatflags&0xffff);
169 if (*com == TIOCLBIS)
170 tp->t_compatflags |= *(int *)data<<16;
172 tp->t_compatflags &= ~(*(int *)data<<16);
174 ttcompatsetlflags(tp, term);
183 tty_ioctl_compat(struct tty *tp, u_long com, caddr_t data, int fflag,
197 term = tp->t_termios;
198 if ((error = ttsetcompat(tp, &com, data, &term)) != 0)
200 return tty_ioctl(tp, com, &term, fflag, td);
203 struct sgttyb *sg = (struct sgttyb *)data;
204 cc_t *cc = tp->t_termios.c_cc;
206 sg->sg_ospeed = ttcompatspeedtab(tp->t_termios.c_ospeed,
208 if (tp->t_termios.c_ispeed == 0)
209 sg->sg_ispeed = sg->sg_ospeed;
211 sg->sg_ispeed = ttcompatspeedtab(tp->t_termios.c_ispeed,
213 sg->sg_erase = cc[VERASE];
214 sg->sg_kill = cc[VKILL];
215 sg->sg_flags = tp->t_compatflags = ttcompatgetflags(tp);
219 struct tchars *tc = (struct tchars *)data;
220 cc_t *cc = tp->t_termios.c_cc;
222 tc->t_intrc = cc[VINTR];
223 tc->t_quitc = cc[VQUIT];
224 tc->t_startc = cc[VSTART];
225 tc->t_stopc = cc[VSTOP];
226 tc->t_eofc = cc[VEOF];
227 tc->t_brkc = cc[VEOL];
231 struct ltchars *ltc = (struct ltchars *)data;
232 cc_t *cc = tp->t_termios.c_cc;
234 ltc->t_suspc = cc[VSUSP];
235 ltc->t_dsuspc = cc[VDSUSP];
236 ltc->t_rprntc = cc[VREPRINT];
237 ltc->t_flushc = cc[VDISCARD];
238 ltc->t_werasc = cc[VWERASE];
239 ltc->t_lnextc = cc[VLNEXT];
244 (ttcompatgetflags(tp) & 0xffff0000UL)
245 | (tp->t_compatflags & 0xffff);
246 *(int *)data = tp->t_compatflags>>16;
248 printf("CLGET: returning %x\n", *(int *)data);
258 return (tty_ioctl(tp, TIOCSETD,
259 *(int *)data == 2 ? (caddr_t)&ldisczero : data,
266 return (tty_ioctl(tp, TIOCCONS, (caddr_t)&one, fflag, td));
276 ttcompatgetflags(struct tty *tp)
278 tcflag_t iflag = tp->t_termios.c_iflag;
279 tcflag_t lflag = tp->t_termios.c_lflag;
280 tcflag_t oflag = tp->t_termios.c_oflag;
281 tcflag_t cflag = tp->t_termios.c_cflag;
286 if (iflag&ICRNL || oflag&ONLCR)
288 if ((cflag&CSIZE) == CS8) {
293 else if (cflag&PARENB) {
300 flags |= EVENP | ODDP;
303 if ((lflag&ICANON) == 0) {
305 if (iflag&(INPCK|ISTRIP|IXON) || lflag&(IEXTEN|ISIG)
306 || (cflag&(CSIZE|PARENB)) != CS8)
311 if (!(flags&RAW) && !(oflag&OPOST) && (cflag&(CSIZE|PARENB)) == CS8)
315 if ((cflag&HUPCL) == 0)
320 flags |= CRTERA|CRTBS;
322 flags |= CRTKIL|CRTBS;
327 if ((iflag&IXANY) == 0)
329 flags |= lflag&(ECHO|TOSTOP|FLUSHO|PENDIN|NOFLSH);
331 printf("getflags: %x\n", flags);
336 ttcompatsetflags(struct tty *tp, struct termios *t)
338 int flags = tp->t_compatflags;
339 tcflag_t iflag = t->c_iflag;
340 tcflag_t oflag = t->c_oflag;
341 tcflag_t lflag = t->c_lflag;
342 tcflag_t cflag = t->c_cflag;
346 lflag &= ~(ECHOCTL|ISIG|ICANON|IEXTEN);
348 iflag &= ~(PARMRK|IGNPAR|IGNCR|INLCR);
349 iflag |= BRKINT|IXON|IMAXBEL;
350 lflag |= ISIG|IEXTEN|ECHOCTL; /* XXX was echoctl on ? */
372 cflag &= ~(CSIZE|PARENB);
373 if (flags&(RAW|LITOUT|PASS8)) {
375 if (!(flags&(RAW|PASS8))
376 || (flags&(RAW|PASS8|ANYP)) == (PASS8|ANYP))
380 if (flags&(RAW|LITOUT))
389 /* XXX don't set INPCK if RAW or PASS8? */
390 if ((flags&(EVENP|ODDP)) == EVENP) {
393 } else if ((flags&(EVENP|ODDP)) == ODDP) {
402 if ((flags&DECCTQ) == 0)
413 ttcompatsetlflags(struct tty *tp, struct termios *t)
415 int flags = tp->t_compatflags;
416 tcflag_t iflag = t->c_iflag;
417 tcflag_t oflag = t->c_oflag;
418 tcflag_t lflag = t->c_lflag;
419 tcflag_t cflag = t->c_cflag;
421 iflag &= ~(PARMRK|IGNPAR|IGNCR|INLCR);
442 if ((flags&DECCTQ) == 0)
454 lflag &= ~(TOSTOP|FLUSHO|PENDIN|NOFLSH);
455 lflag |= flags&(TOSTOP|FLUSHO|PENDIN|NOFLSH);
458 * The next if-else statement is copied from above so don't bother
459 * checking it separately. We could avoid fiddlling with the
460 * character size if the mode is already RAW or if neither the
461 * LITOUT bit or the PASS8 bit is being changed, but the delta of
462 * the change is not available here and skipping the RAW case would
463 * make the code different from above.
465 cflag &= ~(CSIZE|PARENB);
466 if (flags&(RAW|LITOUT|PASS8)) {
468 if (!(flags&(RAW|PASS8))
469 || (flags&(RAW|PASS8|ANYP)) == (PASS8|ANYP))
473 if (flags&(RAW|LITOUT))