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-rw-r--r--sys/kern/tty_compat.c490
1 files changed, 490 insertions, 0 deletions
diff --git a/sys/kern/tty_compat.c b/sys/kern/tty_compat.c
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+++ b/sys/kern/tty_compat.c
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+/*-
+ * Copyright (c) 1982, 1986, 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)tty_compat.c 8.1 (Berkeley) 6/10/93
+ * $FreeBSD$
+ */
+
+#include "opt_compat.h"
+
+/*
+ * mapping routines for old line discipline (yuck)
+ */
+#if defined(COMPAT_43) || defined(COMPAT_SUNOS)
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/ioctl_compat.h>
+#include <sys/tty.h>
+#include <sys/kernel.h>
+#include <sys/sysctl.h>
+
+static int ttcompatgetflags(struct tty *tp);
+static void ttcompatsetflags(struct tty *tp, struct termios *t);
+static void ttcompatsetlflags(struct tty *tp, struct termios *t);
+static int ttcompatspeedtab(int speed, struct speedtab *table);
+
+static int ttydebug = 0;
+SYSCTL_INT(_debug, OID_AUTO, ttydebug, CTLFLAG_RW, &ttydebug, 0, "");
+
+static struct speedtab compatspeeds[] = {
+#define MAX_SPEED 17
+ { 115200, 17 },
+ { 57600, 16 },
+ { 38400, 15 },
+ { 19200, 14 },
+ { 9600, 13 },
+ { 4800, 12 },
+ { 2400, 11 },
+ { 1800, 10 },
+ { 1200, 9 },
+ { 600, 8 },
+ { 300, 7 },
+ { 200, 6 },
+ { 150, 5 },
+ { 134, 4 },
+ { 110, 3 },
+ { 75, 2 },
+ { 50, 1 },
+ { 0, 0 },
+ { -1, -1 },
+};
+static int compatspcodes[] = {
+ 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200,
+ 1800, 2400, 4800, 9600, 19200, 38400, 57600, 115200,
+};
+
+static int
+ttcompatspeedtab(speed, table)
+ int speed;
+ register struct speedtab *table;
+{
+ if (speed == 0)
+ return (0); /* hangup */
+ for ( ; table->sp_speed > 0; table++)
+ if (table->sp_speed <= speed) /* nearest one, rounded down */
+ return (table->sp_code);
+ return (1); /* 50, min and not hangup */
+}
+
+int
+ttsetcompat(tp, com, data, term)
+ register struct tty *tp;
+ u_long *com;
+ caddr_t data;
+ struct termios *term;
+{
+ switch (*com) {
+ case TIOCSETP:
+ case TIOCSETN: {
+ register struct sgttyb *sg = (struct sgttyb *)data;
+ int speed;
+
+ if ((speed = sg->sg_ispeed) > MAX_SPEED || speed < 0)
+ return(EINVAL);
+ else if (speed != ttcompatspeedtab(tp->t_ispeed, compatspeeds))
+ term->c_ispeed = compatspcodes[speed];
+ else
+ term->c_ispeed = tp->t_ispeed;
+ if ((speed = sg->sg_ospeed) > MAX_SPEED || speed < 0)
+ return(EINVAL);
+ else if (speed != ttcompatspeedtab(tp->t_ospeed, compatspeeds))
+ term->c_ospeed = compatspcodes[speed];
+ else
+ term->c_ospeed = tp->t_ospeed;
+ term->c_cc[VERASE] = sg->sg_erase;
+ term->c_cc[VKILL] = sg->sg_kill;
+ tp->t_flags = (tp->t_flags&0xffff0000) | (sg->sg_flags&0xffff);
+ ttcompatsetflags(tp, term);
+ *com = (*com == TIOCSETP) ? TIOCSETAF : TIOCSETA;
+ break;
+ }
+ case TIOCSETC: {
+ struct tchars *tc = (struct tchars *)data;
+ register cc_t *cc;
+
+ cc = term->c_cc;
+ cc[VINTR] = tc->t_intrc;
+ cc[VQUIT] = tc->t_quitc;
+ cc[VSTART] = tc->t_startc;
+ cc[VSTOP] = tc->t_stopc;
+ cc[VEOF] = tc->t_eofc;
+ cc[VEOL] = tc->t_brkc;
+ if (tc->t_brkc == -1)
+ cc[VEOL2] = _POSIX_VDISABLE;
+ *com = TIOCSETA;
+ break;
+ }
+ case TIOCSLTC: {
+ struct ltchars *ltc = (struct ltchars *)data;
+ register cc_t *cc;
+
+ cc = term->c_cc;
+ cc[VSUSP] = ltc->t_suspc;
+ cc[VDSUSP] = ltc->t_dsuspc;
+ cc[VREPRINT] = ltc->t_rprntc;
+ cc[VDISCARD] = ltc->t_flushc;
+ cc[VWERASE] = ltc->t_werasc;
+ cc[VLNEXT] = ltc->t_lnextc;
+ *com = TIOCSETA;
+ break;
+ }
+ case TIOCLBIS:
+ case TIOCLBIC:
+ case TIOCLSET:
+ if (*com == TIOCLSET)
+ tp->t_flags = (tp->t_flags&0xffff) | *(int *)data<<16;
+ else {
+ tp->t_flags =
+ (ttcompatgetflags(tp)&0xffff0000)|(tp->t_flags&0xffff);
+ if (*com == TIOCLBIS)
+ tp->t_flags |= *(int *)data<<16;
+ else
+ tp->t_flags &= ~(*(int *)data<<16);
+ }
+ ttcompatsetlflags(tp, term);
+ *com = TIOCSETA;
+ break;
+ }
+ return 0;
+}
+
+/*ARGSUSED*/
+int
+ttcompat(tp, com, data, flag)
+ register struct tty *tp;
+ u_long com;
+ caddr_t data;
+ int flag;
+{
+ switch (com) {
+ case TIOCSETP:
+ case TIOCSETN:
+ case TIOCSETC:
+ case TIOCSLTC:
+ case TIOCLBIS:
+ case TIOCLBIC:
+ case TIOCLSET: {
+ struct termios term;
+ int error;
+
+ term = tp->t_termios;
+ if ((error = ttsetcompat(tp, &com, data, &term)) != 0)
+ return error;
+ return ttioctl(tp, com, &term, flag);
+ }
+ case TIOCGETP: {
+ register struct sgttyb *sg = (struct sgttyb *)data;
+ register cc_t *cc = tp->t_cc;
+
+ sg->sg_ospeed = ttcompatspeedtab(tp->t_ospeed, compatspeeds);
+ if (tp->t_ispeed == 0)
+ sg->sg_ispeed = sg->sg_ospeed;
+ else
+ sg->sg_ispeed = ttcompatspeedtab(tp->t_ispeed, compatspeeds);
+ sg->sg_erase = cc[VERASE];
+ sg->sg_kill = cc[VKILL];
+ sg->sg_flags = tp->t_flags = ttcompatgetflags(tp);
+ break;
+ }
+ case TIOCGETC: {
+ struct tchars *tc = (struct tchars *)data;
+ register cc_t *cc = tp->t_cc;
+
+ tc->t_intrc = cc[VINTR];
+ tc->t_quitc = cc[VQUIT];
+ tc->t_startc = cc[VSTART];
+ tc->t_stopc = cc[VSTOP];
+ tc->t_eofc = cc[VEOF];
+ tc->t_brkc = cc[VEOL];
+ break;
+ }
+ case TIOCGLTC: {
+ struct ltchars *ltc = (struct ltchars *)data;
+ register cc_t *cc = tp->t_cc;
+
+ ltc->t_suspc = cc[VSUSP];
+ ltc->t_dsuspc = cc[VDSUSP];
+ ltc->t_rprntc = cc[VREPRINT];
+ ltc->t_flushc = cc[VDISCARD];
+ ltc->t_werasc = cc[VWERASE];
+ ltc->t_lnextc = cc[VLNEXT];
+ break;
+ }
+ case TIOCLGET:
+ tp->t_flags =
+ (ttcompatgetflags(tp) & 0xffff0000UL)
+ | (tp->t_flags & 0xffff);
+ *(int *)data = tp->t_flags>>16;
+ if (ttydebug)
+ printf("CLGET: returning %x\n", *(int *)data);
+ break;
+
+ case OTIOCGETD:
+ *(int *)data = tp->t_line ? tp->t_line : 2;
+ break;
+
+ case OTIOCSETD: {
+ int ldisczero = 0;
+
+ return (ttioctl(tp, TIOCSETD,
+ *(int *)data == 2 ? (caddr_t)&ldisczero : data, flag));
+ }
+
+ case OTIOCCONS:
+ *(int *)data = 1;
+ return (ttioctl(tp, TIOCCONS, data, flag));
+
+ default:
+ return (ENOIOCTL);
+ }
+ return (0);
+}
+
+static int
+ttcompatgetflags(tp)
+ register struct tty *tp;
+{
+ register tcflag_t iflag = tp->t_iflag;
+ register tcflag_t lflag = tp->t_lflag;
+ register tcflag_t oflag = tp->t_oflag;
+ register tcflag_t cflag = tp->t_cflag;
+ register int flags = 0;
+
+ if (iflag&IXOFF)
+ flags |= TANDEM;
+ if (iflag&ICRNL || oflag&ONLCR)
+ flags |= CRMOD;
+ if ((cflag&CSIZE) == CS8) {
+ flags |= PASS8;
+ if (iflag&ISTRIP)
+ flags |= ANYP;
+ }
+ else if (cflag&PARENB) {
+ if (iflag&INPCK) {
+ if (cflag&PARODD)
+ flags |= ODDP;
+ else
+ flags |= EVENP;
+ } else
+ flags |= EVENP | ODDP;
+ }
+
+ if ((lflag&ICANON) == 0) {
+ /* fudge */
+ if (iflag&(INPCK|ISTRIP|IXON) || lflag&(IEXTEN|ISIG)
+ || (cflag&(CSIZE|PARENB)) != CS8)
+ flags |= CBREAK;
+ else
+ flags |= RAW;
+ }
+ if (!(flags&RAW) && !(oflag&OPOST) && (cflag&(CSIZE|PARENB)) == CS8)
+ flags |= LITOUT;
+ if (cflag&MDMBUF)
+ flags |= MDMBUF;
+ if ((cflag&HUPCL) == 0)
+ flags |= NOHANG;
+ if (oflag&OXTABS)
+ flags |= XTABS;
+ if (lflag&ECHOE)
+ flags |= CRTERA|CRTBS;
+ if (lflag&ECHOKE)
+ flags |= CRTKIL|CRTBS;
+ if (lflag&ECHOPRT)
+ flags |= PRTERA;
+ if (lflag&ECHOCTL)
+ flags |= CTLECH;
+ if ((iflag&IXANY) == 0)
+ flags |= DECCTQ;
+ flags |= lflag&(ECHO|TOSTOP|FLUSHO|PENDIN|NOFLSH);
+ if (ttydebug)
+ printf("getflags: %x\n", flags);
+ return (flags);
+}
+
+static void
+ttcompatsetflags(tp, t)
+ register struct tty *tp;
+ register struct termios *t;
+{
+ register int flags = tp->t_flags;
+ register tcflag_t iflag = t->c_iflag;
+ register tcflag_t oflag = t->c_oflag;
+ register tcflag_t lflag = t->c_lflag;
+ register tcflag_t cflag = t->c_cflag;
+
+ if (flags & RAW) {
+ iflag = IGNBRK;
+ lflag &= ~(ECHOCTL|ISIG|ICANON|IEXTEN);
+ } else {
+ iflag &= ~(PARMRK|IGNPAR|IGNCR|INLCR);
+ iflag |= BRKINT|IXON|IMAXBEL;
+ lflag |= ISIG|IEXTEN|ECHOCTL; /* XXX was echoctl on ? */
+ if (flags & XTABS)
+ oflag |= OXTABS;
+ else
+ oflag &= ~OXTABS;
+ if (flags & CBREAK)
+ lflag &= ~ICANON;
+ else
+ lflag |= ICANON;
+ if (flags&CRMOD) {
+ iflag |= ICRNL;
+ oflag |= ONLCR;
+ } else {
+ iflag &= ~ICRNL;
+ oflag &= ~ONLCR;
+ }
+ }
+ if (flags&ECHO)
+ lflag |= ECHO;
+ else
+ lflag &= ~ECHO;
+
+ cflag &= ~(CSIZE|PARENB);
+ if (flags&(RAW|LITOUT|PASS8)) {
+ cflag |= CS8;
+ if (!(flags&(RAW|PASS8))
+ || (flags&(RAW|PASS8|ANYP)) == (PASS8|ANYP))
+ iflag |= ISTRIP;
+ else
+ iflag &= ~ISTRIP;
+ if (flags&(RAW|LITOUT))
+ oflag &= ~OPOST;
+ else
+ oflag |= OPOST;
+ } else {
+ cflag |= CS7|PARENB;
+ iflag |= ISTRIP;
+ oflag |= OPOST;
+ }
+ /* XXX don't set INPCK if RAW or PASS8? */
+ if ((flags&(EVENP|ODDP)) == EVENP) {
+ iflag |= INPCK;
+ cflag &= ~PARODD;
+ } else if ((flags&(EVENP|ODDP)) == ODDP) {
+ iflag |= INPCK;
+ cflag |= PARODD;
+ } else
+ iflag &= ~INPCK;
+ if (flags&TANDEM)
+ iflag |= IXOFF;
+ else
+ iflag &= ~IXOFF;
+ if ((flags&DECCTQ) == 0)
+ iflag |= IXANY;
+ else
+ iflag &= ~IXANY;
+ t->c_iflag = iflag;
+ t->c_oflag = oflag;
+ t->c_lflag = lflag;
+ t->c_cflag = cflag;
+}
+
+static void
+ttcompatsetlflags(tp, t)
+ register struct tty *tp;
+ register struct termios *t;
+{
+ register int flags = tp->t_flags;
+ register tcflag_t iflag = t->c_iflag;
+ register tcflag_t oflag = t->c_oflag;
+ register tcflag_t lflag = t->c_lflag;
+ register tcflag_t cflag = t->c_cflag;
+
+ iflag &= ~(PARMRK|IGNPAR|IGNCR|INLCR);
+ if (flags&CRTERA)
+ lflag |= ECHOE;
+ else
+ lflag &= ~ECHOE;
+ if (flags&CRTKIL)
+ lflag |= ECHOKE;
+ else
+ lflag &= ~ECHOKE;
+ if (flags&PRTERA)
+ lflag |= ECHOPRT;
+ else
+ lflag &= ~ECHOPRT;
+ if (flags&CTLECH)
+ lflag |= ECHOCTL;
+ else
+ lflag &= ~ECHOCTL;
+ if (flags&TANDEM)
+ iflag |= IXOFF;
+ else
+ iflag &= ~IXOFF;
+ if ((flags&DECCTQ) == 0)
+ iflag |= IXANY;
+ else
+ iflag &= ~IXANY;
+ if (flags & MDMBUF)
+ cflag |= MDMBUF;
+ else
+ cflag &= ~MDMBUF;
+ if (flags&NOHANG)
+ cflag &= ~HUPCL;
+ else
+ cflag |= HUPCL;
+ lflag &= ~(TOSTOP|FLUSHO|PENDIN|NOFLSH);
+ lflag |= flags&(TOSTOP|FLUSHO|PENDIN|NOFLSH);
+
+ /*
+ * The next if-else statement is copied from above so don't bother
+ * checking it separately. We could avoid fiddlling with the
+ * character size if the mode is already RAW or if neither the
+ * LITOUT bit or the PASS8 bit is being changed, but the delta of
+ * the change is not available here and skipping the RAW case would
+ * make the code different from above.
+ */
+ cflag &= ~(CSIZE|PARENB);
+ if (flags&(RAW|LITOUT|PASS8)) {
+ cflag |= CS8;
+ if (!(flags&(RAW|PASS8))
+ || (flags&(RAW|PASS8|ANYP)) == (PASS8|ANYP))
+ iflag |= ISTRIP;
+ else
+ iflag &= ~ISTRIP;
+ if (flags&(RAW|LITOUT))
+ oflag &= ~OPOST;
+ else
+ oflag |= OPOST;
+ } else {
+ cflag |= CS7|PARENB;
+ iflag |= ISTRIP;
+ oflag |= OPOST;
+ }
+ t->c_iflag = iflag;
+ t->c_oflag = oflag;
+ t->c_lflag = lflag;
+ t->c_cflag = cflag;
+}
+#endif /* COMPAT_43 || COMPAT_SUNOS */
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