tty_43.c

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    1 /*      $NetBSD: tty_43.c,v 1.27 2008/04/28 20:23:41 martin Exp $       */
    2 
    3 /*-
    4  * Copyright (c) 2008 The NetBSD Foundation, Inc.
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   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  *
   16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   26  * POSSIBILITY OF SUCH DAMAGE.
   27  */
   28 
   29 /*-
   30  * Copyright (c) 1982, 1986, 1991, 1993
   31  *      The Regents of the University of California.  All rights reserved.
   32  *
   33  * Redistribution and use in source and binary forms, with or without
   34  * modification, are permitted provided that the following conditions
   35  * are met:
   36  * 1. Redistributions of source code must retain the above copyright
   37  *    notice, this list of conditions and the following disclaimer.
   38  * 2. Redistributions in binary form must reproduce the above copyright
   39  *    notice, this list of conditions and the following disclaimer in the
   40  *    documentation and/or other materials provided with the distribution.
   41  * 3. Neither the name of the University nor the names of its contributors
   42  *    may be used to endorse or promote products derived from this software
   43  *    without specific prior written permission.
   44  *
   45  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   46  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   47  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   48  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   49  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   50  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   51  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   52  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   53  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   54  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   55  * SUCH DAMAGE.
   56  *
   57  *      @(#)tty_compat.c        8.2 (Berkeley) 1/9/95
   58  */
   59 
   60 /*
   61  * mapping routines for old line discipline (yuck)
   62  */
   63 
   64 #include <sys/cdefs.h>
   65 __KERNEL_RCSID(0, "$NetBSD: tty_43.c,v 1.27 2008/04/28 20:23:41 martin Exp $");
   66 
   67 #include <sys/param.h>
   68 #include <sys/systm.h>
   69 #include <sys/ioctl.h>
   70 #include <sys/proc.h>
   71 #include <sys/conf.h>
   72 #include <sys/tty.h>
   73 #include <sys/termios.h>
   74 #include <sys/file.h>
   75 #include <sys/kernel.h>
   76 #include <sys/syslog.h>
   77 #include <sys/ioctl_compat.h>
   78 
   79 /*
   80  * XXX libcompat files should be included with config attributes
   81  */
   82 #ifdef COMPAT_OLDTTY
   83 
   84 int ttydebug = 0;
   85 
   86 static const struct speedtab compatspeeds[] = {
   87 #define MAX_SPEED       17
   88         { 115200, 17 },
   89         { 57600, 16 },
   90         { 38400, 15 },
   91         { 19200, 14 },
   92         { 9600, 13 },
   93         { 4800, 12 },
   94         { 2400, 11 },
   95         { 1800, 10 },
   96         { 1200, 9 },
   97         { 600,  8 },
   98         { 300,  7 },
   99         { 200,  6 },
  100         { 150,  5 },
  101         { 134,  4 },
  102         { 110,  3 },
  103         { 75,   2 },
  104         { 50,   1 },
  105         { 0,    0 },
  106         { -1,   -1 },
  107 };
  108 static const int compatspcodes[] = {
  109         0, 50, 75, 110, 134, 150, 200, 300, 600, 1200,
  110         1800, 2400, 4800, 9600, 19200, 38400, 57600, 115200
  111 };
  112 
  113 static int ttcompatgetflags(struct tty *);
  114 static void ttcompatsetflags(struct tty *, struct termios *);
  115 static void ttcompatsetlflags(struct tty *, struct termios *);
  116 
  117 /*ARGSUSED*/
  118 int
  119 ttcompat(struct tty *tp, u_long com, void *data, int flag, struct lwp *l)
  120 {
  121 
  122         switch (com) {
  123         case TIOCGETP: {
  124                 struct sgttyb *sg = (struct sgttyb *)data;
  125                 u_char *cc;
  126                 int speed;
  127 
  128                 mutex_spin_enter(&tty_lock);
  129                 cc = tp->t_cc;
  130                 speed = ttspeedtab(tp->t_ospeed, compatspeeds);
  131                 sg->sg_ospeed = (speed == -1) ? MAX_SPEED : speed;
  132                 if (tp->t_ispeed == 0)
  133                         sg->sg_ispeed = sg->sg_ospeed;
  134                 else {
  135                         speed = ttspeedtab(tp->t_ispeed, compatspeeds);
  136                         sg->sg_ispeed = (speed == -1) ? MAX_SPEED : speed;
  137                 }
  138                 sg->sg_erase = cc[VERASE];
  139                 sg->sg_kill = cc[VKILL];
  140                 sg->sg_flags = ttcompatgetflags(tp);
  141                 mutex_spin_exit(&tty_lock);
  142                 break;
  143         }
  144 
  145         case TIOCSETP:
  146         case TIOCSETN: {
  147                 struct sgttyb *sg = (struct sgttyb *)data;
  148                 struct termios term;
  149                 int speed;
  150 
  151                 mutex_spin_enter(&tty_lock);
  152                 term = tp->t_termios;
  153                 if ((speed = sg->sg_ispeed) > MAX_SPEED || speed < 0)
  154                         term.c_ispeed = speed;
  155                 else
  156                         term.c_ispeed = compatspcodes[speed];
  157                 if ((speed = sg->sg_ospeed) > MAX_SPEED || speed < 0)
  158                         term.c_ospeed = speed;
  159                 else
  160                         term.c_ospeed = compatspcodes[speed];
  161                 term.c_cc[VERASE] = sg->sg_erase;
  162                 term.c_cc[VKILL] = sg->sg_kill;
  163                 tp->t_flags = (ttcompatgetflags(tp)&0xffff0000) | (sg->sg_flags&0xffff);
  164                 ttcompatsetflags(tp, &term);
  165                 mutex_spin_exit(&tty_lock);
  166                 return (ttioctl(tp, com == TIOCSETP ? TIOCSETAF : TIOCSETA,
  167                         (void *)&term, flag, l));
  168         }
  169 
  170         case TIOCGETC: {
  171                 struct tchars *tc = (struct tchars *)data;
  172                 u_char *cc = tp->t_cc;
  173 
  174                 tc->t_intrc = cc[VINTR];
  175                 tc->t_quitc = cc[VQUIT];
  176                 tc->t_startc = cc[VSTART];
  177                 tc->t_stopc = cc[VSTOP];
  178                 tc->t_eofc = cc[VEOF];
  179                 tc->t_brkc = cc[VEOL];
  180                 break;
  181         }
  182         case TIOCSETC: {
  183                 struct tchars *tc = (struct tchars *)data;
  184                 u_char *cc = tp->t_cc;
  185 
  186                 cc[VINTR] = tc->t_intrc;
  187                 cc[VQUIT] = tc->t_quitc;
  188                 cc[VSTART] = tc->t_startc;
  189                 cc[VSTOP] = tc->t_stopc;
  190                 cc[VEOF] = tc->t_eofc;
  191                 cc[VEOL] = tc->t_brkc;
  192                 if (tc->t_brkc == (char)-1)
  193                         cc[VEOL2] = _POSIX_VDISABLE;
  194                 break;
  195         }
  196         case TIOCSLTC: {
  197                 struct ltchars *ltc = (struct ltchars *)data;
  198                 u_char *cc = tp->t_cc;
  199 
  200                 cc[VSUSP] = ltc->t_suspc;
  201                 cc[VDSUSP] = ltc->t_dsuspc;
  202                 cc[VREPRINT] = ltc->t_rprntc;
  203                 cc[VDISCARD] = ltc->t_flushc;
  204                 cc[VWERASE] = ltc->t_werasc;
  205                 cc[VLNEXT] = ltc->t_lnextc;
  206                 break;
  207         }
  208         case TIOCGLTC: {
  209                 struct ltchars *ltc = (struct ltchars *)data;
  210                 u_char *cc = tp->t_cc;
  211 
  212                 ltc->t_suspc = cc[VSUSP];
  213                 ltc->t_dsuspc = cc[VDSUSP];
  214                 ltc->t_rprntc = cc[VREPRINT];
  215                 ltc->t_flushc = cc[VDISCARD];
  216                 ltc->t_werasc = cc[VWERASE];
  217                 ltc->t_lnextc = cc[VLNEXT];
  218                 break;
  219         }
  220         case TIOCLBIS:
  221         case TIOCLBIC:
  222         case TIOCLSET: {
  223                 struct termios term;
  224                 int flags;
  225 
  226                 mutex_spin_enter(&tty_lock);
  227                 term = tp->t_termios;
  228                 flags = ttcompatgetflags(tp);
  229                 switch (com) {
  230                 case TIOCLSET:
  231                         tp->t_flags = (flags&0xffff) | (*(int *)data<<16);
  232                         break;
  233                 case TIOCLBIS:
  234                         tp->t_flags = flags | (*(int *)data<<16);
  235                         break;
  236                 case TIOCLBIC:
  237                         tp->t_flags = flags & ~(*(int *)data<<16);
  238                         break;
  239                 }
  240                 ttcompatsetlflags(tp, &term);
  241                 mutex_spin_exit(&tty_lock);
  242                 return (ttioctl(tp, TIOCSETA, (void *)&term, flag, l));
  243         }
  244         case TIOCLGET:
  245                 mutex_spin_enter(&tty_lock);
  246                 *(int *)data = ttcompatgetflags(tp)>>16;
  247                 mutex_spin_exit(&tty_lock);
  248                 if (ttydebug)
  249                         printf("CLGET: returning %x\n", *(int *)data);
  250                 break;
  251 
  252         case OTIOCGETD:
  253                 mutex_spin_enter(&tty_lock);
  254                 *(int *)data = (tp->t_linesw == NULL) ?
  255                     2 /* XXX old NTTYDISC */ : tp->t_linesw->l_no;
  256                 mutex_spin_exit(&tty_lock);
  257                 break;
  258 
  259         case OTIOCSETD: {
  260                 int ldisczero = 0;
  261 
  262                 return (ttioctl(tp, TIOCSETD,
  263                         *(int *)data == 2 ? (void *)&ldisczero : data, flag,
  264                         l));
  265             }
  266 
  267         case OTIOCCONS:
  268                 *(int *)data = 1;
  269                 return (ttioctl(tp, TIOCCONS, data, flag, l));
  270 
  271         case TIOCHPCL:
  272                 mutex_spin_enter(&tty_lock);
  273                 SET(tp->t_cflag, HUPCL);
  274                 mutex_spin_exit(&tty_lock);
  275                 break;
  276 
  277         case TIOCGSID:
  278                 mutex_enter(proc_lock);
  279                 if (tp->t_session == NULL) {
  280                         mutex_exit(proc_lock);
  281                         return ENOTTY;
  282                 }
  283                 if (tp->t_session->s_leader == NULL) {
  284                         mutex_exit(proc_lock);
  285                         return ENOTTY;
  286                 }
  287                 *(int *) data =  tp->t_session->s_leader->p_pid;
  288                 mutex_exit(proc_lock);
  289                 break;
  290 
  291         default:
  292                 return (EPASSTHROUGH);
  293         }
  294         return (0);
  295 }
  296 
  297 static int
  298 ttcompatgetflags(struct tty *tp)
  299 {
  300         tcflag_t iflag = tp->t_iflag;
  301         tcflag_t lflag = tp->t_lflag;
  302         tcflag_t oflag = tp->t_oflag;
  303         tcflag_t cflag = tp->t_cflag;
  304         int flags = 0;
  305 
  306         KASSERT(mutex_owned(&tty_lock));
  307 
  308         if (ISSET(iflag, IXOFF))
  309                 SET(flags, TANDEM);
  310         if (ISSET(iflag, ICRNL) || ISSET(oflag, ONLCR))
  311                 SET(flags, CRMOD);
  312         if (ISSET(cflag, PARENB)) {
  313                 if (ISSET(iflag, INPCK)) {
  314                         if (ISSET(cflag, PARODD))
  315                                 SET(flags, ODDP);
  316                         else
  317                                 SET(flags, EVENP);
  318                 } else
  319                         SET(flags, ANYP);
  320         }
  321 
  322         if (!ISSET(lflag, ICANON)) {
  323                 /* fudge */
  324                 if (ISSET(iflag, IXON) || ISSET(lflag, ISIG|IEXTEN) ||
  325                     ISSET(cflag, PARENB))
  326                         SET(flags, CBREAK);
  327                 else
  328                         SET(flags, RAW);
  329         }
  330 
  331         if (ISSET(flags, RAW))
  332                 SET(flags, ISSET(tp->t_flags, LITOUT|PASS8));
  333         else if (ISSET(cflag, CSIZE) == CS8) {
  334                 if (!ISSET(oflag, OPOST))
  335                         SET(flags, LITOUT);
  336                 if (!ISSET(iflag, ISTRIP))
  337                         SET(flags, PASS8);
  338         }
  339 
  340         if (ISSET(cflag, MDMBUF))
  341                 SET(flags, MDMBUF);
  342         if (!ISSET(cflag, HUPCL))
  343                 SET(flags, NOHANG);
  344         if (ISSET(oflag, OXTABS))
  345                 SET(flags, XTABS);
  346         if (ISSET(lflag, ECHOE))
  347                 SET(flags, CRTERA|CRTBS);
  348         if (ISSET(lflag, ECHOKE))
  349                 SET(flags, CRTKIL|CRTBS);
  350         if (ISSET(lflag, ECHOPRT))
  351                 SET(flags, PRTERA);
  352         if (ISSET(lflag, ECHOCTL))
  353                 SET(flags, CTLECH);
  354         if (!ISSET(iflag, IXANY))
  355                 SET(flags, DECCTQ);
  356         SET(flags, ISSET(lflag, ECHO|TOSTOP|FLUSHO|PENDIN|NOFLSH));
  357         if (ttydebug)
  358                 printf("getflags: %x\n", flags);
  359         return (flags);
  360 }
  361 
  362 static void
  363 ttcompatsetflags(struct tty *tp, struct termios *t)
  364 {
  365         int flags = tp->t_flags;
  366 
  367         KASSERT(mutex_owned(&tty_lock));
  368 
  369         tcflag_t iflag = t->c_iflag;
  370         tcflag_t oflag = t->c_oflag;
  371         tcflag_t lflag = t->c_lflag;
  372         tcflag_t cflag = t->c_cflag;
  373 
  374         if (ISSET(flags, TANDEM))
  375                 SET(iflag, IXOFF);
  376         else
  377                 CLR(iflag, IXOFF);
  378         if (ISSET(flags, ECHO))
  379                 SET(lflag, ECHO);
  380         else
  381                 CLR(lflag, ECHO);
  382         if (ISSET(flags, CRMOD)) {
  383                 SET(iflag, ICRNL);
  384                 SET(oflag, ONLCR);
  385         } else {
  386                 CLR(iflag, ICRNL);
  387                 CLR(oflag, ONLCR);
  388         }
  389         if (ISSET(flags, XTABS))
  390                 SET(oflag, OXTABS);
  391         else
  392                 CLR(oflag, OXTABS);
  393 
  394 
  395         if (ISSET(flags, RAW)) {
  396                 iflag &= IXOFF;
  397                 CLR(lflag, ISIG|ICANON|IEXTEN);
  398                 CLR(cflag, PARENB);
  399         } else {
  400                 SET(iflag, BRKINT|IXON|IMAXBEL);
  401                 SET(lflag, ISIG|IEXTEN);
  402                 if (ISSET(flags, CBREAK))
  403                         CLR(lflag, ICANON);
  404                 else
  405                         SET(lflag, ICANON);
  406                 switch (ISSET(flags, ANYP)) {
  407                 case 0:
  408                         CLR(cflag, PARENB);
  409                         break;
  410                 case ANYP:
  411                         SET(cflag, PARENB);
  412                         CLR(iflag, INPCK);
  413                         break;
  414                 case EVENP:
  415                         SET(cflag, PARENB);
  416                         SET(iflag, INPCK);
  417                         CLR(cflag, PARODD);
  418                         break;
  419                 case ODDP:
  420                         SET(cflag, PARENB);
  421                         SET(iflag, INPCK);
  422                         SET(cflag, PARODD);
  423                         break;
  424                 }
  425         }
  426 
  427         if (ISSET(flags, RAW|LITOUT|PASS8)) {
  428                 CLR(cflag, CSIZE);
  429                 SET(cflag, CS8);
  430                 if (!ISSET(flags, RAW|PASS8))
  431                         SET(iflag, ISTRIP);
  432                 else
  433                         CLR(iflag, ISTRIP);
  434                 if (!ISSET(flags, RAW|LITOUT))
  435                         SET(oflag, OPOST);
  436                 else
  437                         CLR(oflag, OPOST);
  438         } else {
  439                 CLR(cflag, CSIZE);
  440                 SET(cflag, CS7);
  441                 SET(iflag, ISTRIP);
  442                 SET(oflag, OPOST);
  443         }
  444 
  445         t->c_iflag = iflag;
  446         t->c_oflag = oflag;
  447         t->c_lflag = lflag;
  448         t->c_cflag = cflag;
  449 }
  450 
  451 static void
  452 ttcompatsetlflags(struct tty *tp, struct termios *t)
  453 {
  454         int flags = tp->t_flags;
  455         tcflag_t iflag = t->c_iflag;
  456         tcflag_t oflag = t->c_oflag;
  457         tcflag_t lflag = t->c_lflag;
  458         tcflag_t cflag = t->c_cflag;
  459 
  460         KASSERT(mutex_owned(&tty_lock));
  461 
  462         /* Nothing we can do with CRTBS. */
  463         if (ISSET(flags, PRTERA))
  464                 SET(lflag, ECHOPRT);
  465         else
  466                 CLR(lflag, ECHOPRT);
  467         if (ISSET(flags, CRTERA))
  468                 SET(lflag, ECHOE);
  469         else
  470                 CLR(lflag, ECHOE);
  471         /* Nothing we can do with TILDE. */
  472         if (ISSET(flags, MDMBUF))
  473                 SET(cflag, MDMBUF);
  474         else
  475                 CLR(cflag, MDMBUF);
  476         if (ISSET(flags, NOHANG))
  477                 CLR(cflag, HUPCL);
  478         else
  479                 SET(cflag, HUPCL);
  480         if (ISSET(flags, CRTKIL))
  481                 SET(lflag, ECHOKE);
  482         else
  483                 CLR(lflag, ECHOKE);
  484         if (ISSET(flags, CTLECH))
  485                 SET(lflag, ECHOCTL);
  486         else
  487                 CLR(lflag, ECHOCTL);
  488         if (!ISSET(flags, DECCTQ))
  489                 SET(iflag, IXANY);
  490         else
  491                 CLR(iflag, IXANY);
  492         CLR(lflag, TOSTOP|FLUSHO|PENDIN|NOFLSH);
  493         SET(lflag, ISSET(flags, TOSTOP|FLUSHO|PENDIN|NOFLSH));
  494 
  495         if (ISSET(flags, RAW|LITOUT|PASS8)) {
  496                 CLR(cflag, CSIZE);
  497                 SET(cflag, CS8);
  498                 if (!ISSET(flags, RAW|PASS8))
  499                         SET(iflag, ISTRIP);
  500                 else
  501                         CLR(iflag, ISTRIP);
  502                 if (!ISSET(flags, RAW|LITOUT))
  503                         SET(oflag, OPOST);
  504                 else
  505                         CLR(oflag, OPOST);
  506         } else {
  507                 CLR(cflag, CSIZE);
  508                 SET(cflag, CS7);
  509                 SET(iflag, ISTRIP);
  510                 SET(oflag, OPOST);
  511         }
  512 
  513         t->c_iflag = iflag;
  514         t->c_oflag = oflag;
  515         t->c_lflag = lflag;
  516         t->c_cflag = cflag;
  517 }
  518 
  519 #endif /* COMPAT_OLDTTY */
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FreeBSD/Linux Kernel Cross Reference sys/compat/common/tty_43.c

FreeBSD/Linux Kernel Cross Reference
sys/compat/common/tty_43.c
