# 2.11BSD#431 - /usr/src/sys/sys/tty_pty.c

##### Functions

    ptcclose          X
    ptcopen           X
    ptcread           X
    ptcselect         X
    ptcwakeup         X
    ptcwrite          X
    ptsclose          X
    ptsopen           X
    ptsread           X
    ptsstart          X
    ptsstop           X
    ptswrite          X
    ptyioctl          X

##### Variables

    npty              X
    pt_ioctl          X
    pt_tty            X

##### Macros

    BUFSIZ            X
    NPTY              X
    PF_NOSTOP         X
    PF_PKT            X
    PF_RCOLL          X
    PF_REMOTE         X
    PF_STOPPED        X
    PF_UCNTL          X
    PF_WCOLL          X

##### struct's

    pt_ioctl          X

       1: /*
       2:  * Copyright (c) 1986 Regents of the University of California.
       3:  * All rights reserved.  The Berkeley software License Agreement
       4:  * specifies the terms and conditions for redistribution.
       5:  *
       6:  *	@(#)tty_pty.c	1.3 (2.11BSD GTE) 1997/5/2
       7:  */
       8:
       9: /*
      10:  * Pseudo-teletype Driver
      11:  * (Actually two drivers, requiring two entries in 'cdevsw')
      12:  */
      13: #include "pty.h"
      14:
      15: #if NPTY > 0
      16: #include "param.h"
      17: #include "systm.h"
      18: #include "ioctl.h"
      19: #include "tty.h"
      20: #include "user.h"
      21: #include "conf.h"
      22: #include "file.h"
      23: #include "proc.h"
      24: #include "uio.h"
      25: #include "kernel.h"
      26: #include "inode.h"
      27:
      28: extern  int TTYHOG;     /* see tty.c */
      29:
      30: #if NPTY == 1
      31: #undef NPTY
      32: #define NPTY    16      /* crude XXX */
      33: #endif
      34:
      35: #define BUFSIZ 100      /* Chunk size iomoved to/from user */
      36:
      37: /*
      38:  * pts == /dev/tty[pqrs]?
      39:  * ptc == /dev/pty[pqrs]?
      40:  */
      41: struct  tty pt_tty[NPTY];
      42: struct  pt_ioctl {
      43:     int pt_flags;
      44:     struct  proc *pt_selr, *pt_selw;
      45:     u_char  pt_send;
      46:     u_char  pt_ucntl;
      47: } pt_ioctl[NPTY];
      48: int npty = NPTY;        /* for pstat -t */
      49:
      50: #define PF_RCOLL    0x01
      51: #define PF_WCOLL    0x02
      52: #define PF_PKT      0x08        /* packet mode */
      53: #define PF_STOPPED  0x10        /* user told stopped */
      54: #define PF_REMOTE   0x20        /* remote and flow controlled input */
      55: #define PF_NOSTOP   0x40
      56: #define PF_UCNTL    0x80        /* user control mode */
      57:
      58: /*ARGSUSED*/
      59: ptsopen(dev, flag)
      60:     dev_t dev;
      61: {
      62:     register struct tty *tp;
      63:     int error;
      64:
      65: #ifdef lint
      66:     npty = npty;
      67: #endif
      68:     if (minor(dev) >= NPTY)
      69:         return (ENXIO);
      70:     tp = &pt_tty[minor(dev)];
      71:     if ((tp->t_state & TS_ISOPEN) == 0) {
      72:         ttychars(tp);       /* Set up default chars */
      73:         tp->t_ispeed = tp->t_ospeed = EXTB;
      74:         tp->t_flags = 0;    /* No features (nor raw mode) */
      75:     } else if (tp->t_state&TS_XCLUDE && u.u_uid != 0)
      76:         return (EBUSY);
      77:     if (tp->t_oproc)            /* Ctrlr still around. */
      78:         tp->t_state |= TS_CARR_ON;
      79:     while ((tp->t_state & TS_CARR_ON) == 0) {
      80:         tp->t_state |= TS_WOPEN;
      81:         sleep((caddr_t)&tp->t_rawq, TTIPRI);
      82:     }
      83:     error = (*linesw[tp->t_line].l_open)(dev, tp);
      84:     ptcwakeup(tp, FREAD|FWRITE);
      85:     return (error);
      86: }
      87:
      88: ptsclose(dev, flag)
      89:     dev_t dev;
      90:     int flag;
      91: {
      92:     register struct tty *tp;
      93:
      94:     tp = &pt_tty[minor(dev)];
      95:     (*linesw[tp->t_line].l_close)(tp, flag);
      96:     ttyclose(tp);
      97:     ptcwakeup(tp, FREAD|FWRITE);
      98: }
      99:
     100: ptsread(dev, uio, flag)
     101:     dev_t dev;
     102:     register struct uio *uio;
     103:     int flag;
     104: {
     105:     register struct tty *tp = &pt_tty[minor(dev)];
     106:     register struct pt_ioctl *pti = &pt_ioctl[minor(dev)];
     107:     int error = 0;
     108:
     109: again:
     110:     if (pti->pt_flags & PF_REMOTE) {
     111:         while (tp == u.u_ttyp && u.u_procp->p_pgrp != tp->t_pgrp) {
     112:             if ((u.u_procp->p_sigignore & sigmask(SIGTTIN)) ||
     113:                 (u.u_procp->p_sigmask & sigmask(SIGTTIN)) ||
     114:                 u.u_procp->p_flag&SVFORK)
     115:                 return (EIO);
     116:             gsignal(u.u_procp->p_pgrp, SIGTTIN);
     117:             sleep((caddr_t)&lbolt, TTIPRI);
     118:         }
     119:         if (tp->t_canq.c_cc == 0) {
     120:             if (flag & IO_NDELAY)
     121:                 return (EWOULDBLOCK);
     122:             sleep((caddr_t)&tp->t_canq, TTIPRI);
     123:             goto again;
     124:         }
     125:         while (tp->t_canq.c_cc > 1 && uio->uio_resid)
     126:             if (ureadc(getc(&tp->t_canq), uio) < 0) {
     127:                 error = EFAULT;
     128:                 break;
     129:             }
     130:         if (tp->t_canq.c_cc == 1)
     131:             (void) getc(&tp->t_canq);
     132:         if (tp->t_canq.c_cc)
     133:             return (error);
     134:     } else
     135:         if (tp->t_oproc)
     136:             error = (*linesw[tp->t_line].l_read)(tp, uio, flag);
     137:     ptcwakeup(tp, FWRITE);
     138:     return (error);
     139: }
     140:
     141: /*
     142:  * Write to pseudo-tty.
     143:  * Wakeups of controlling tty will happen
     144:  * indirectly, when tty driver calls ptsstart.
     145:  */
     146: ptswrite(dev, uio, flag)
     147:     dev_t dev;
     148:     register struct uio *uio;
     149:     int flag;
     150: {
     151:     register struct tty *tp;
     152:
     153:     tp = &pt_tty[minor(dev)];
     154:     if (tp->t_oproc == 0)
     155:         return (EIO);
     156:     return ((*linesw[tp->t_line].l_write)(tp, uio, flag));
     157: }
     158:
     159: /*
     160:  * Start output on pseudo-tty.
     161:  * Wake up process selecting or sleeping for input from controlling tty.
     162:  */
     163: ptsstart(tp)
     164:     struct tty *tp;
     165: {
     166:     register struct pt_ioctl *pti = &pt_ioctl[minor(tp->t_dev)];
     167:
     168:     if (tp->t_state & TS_TTSTOP)
     169:         return;
     170:     if (pti->pt_flags & PF_STOPPED) {
     171:         pti->pt_flags &= ~PF_STOPPED;
     172:         pti->pt_send = TIOCPKT_START;
     173:     }
     174:     ptcwakeup(tp, FREAD);
     175: }
     176:
     177: ptcwakeup(tp, flag)
     178:     struct tty *tp;
     179: {
     180:     struct pt_ioctl *pti = &pt_ioctl[minor(tp->t_dev)];
     181:
     182:     if (flag & FREAD) {
     183:         if (pti->pt_selr) {
     184:             selwakeup(pti->pt_selr, (long)(pti->pt_flags & PF_RCOLL));
     185:             pti->pt_selr = 0;
     186:             pti->pt_flags &= ~PF_RCOLL;
     187:         }
     188:         wakeup((caddr_t)&tp->t_outq.c_cf);
     189:     }
     190:     if (flag & FWRITE) {
     191:         if (pti->pt_selw) {
     192:             selwakeup(pti->pt_selw, (long)(pti->pt_flags & PF_WCOLL));
     193:             pti->pt_selw = 0;
     194:             pti->pt_flags &= ~PF_WCOLL;
     195:         }
     196:         wakeup((caddr_t)&tp->t_rawq.c_cf);
     197:     }
     198: }
     199:
     200: /*ARGSUSED*/
     201: ptcopen(dev, flag)
     202:     dev_t dev;
     203:     int flag;
     204: {
     205:     register struct tty *tp;
     206:     struct pt_ioctl *pti;
     207:
     208:     if (minor(dev) >= NPTY)
     209:         return (ENXIO);
     210:     tp = &pt_tty[minor(dev)];
     211:     if (tp->t_oproc)
     212:         return (EIO);
     213:     tp->t_oproc = ptsstart;
     214:     (void)(*linesw[tp->t_line].l_modem)(tp, 1);
     215:     pti = &pt_ioctl[minor(dev)];
     216:     pti->pt_flags = 0;
     217:     pti->pt_send = 0;
     218:     pti->pt_ucntl = 0;
     219:     return (0);
     220: }
     221:
     222: ptcclose(dev, flag)
     223:     dev_t dev;
     224:     int flag;
     225: {
     226:     register struct tty *tp;
     227:
     228:     tp = &pt_tty[minor(dev)];
     229:     (void)(*linesw[tp->t_line].l_modem)(tp, 0);
     230:     tp->t_state &= ~TS_CARR_ON;
     231:     tp->t_oproc = 0;        /* mark closed */
     232: }
     233:
     234: ptcread(dev, uio, flag)
     235:     dev_t dev;
     236:     register struct uio *uio;
     237:     int flag;
     238: {
     239:     register struct tty *tp = &pt_tty[minor(dev)];
     240:     struct pt_ioctl *pti = &pt_ioctl[minor(dev)];
     241:     char buf[BUFSIZ];
     242:     int error = 0, cc;
     243:
     244:     /*
     245: 	 * We want to block until the slave
     246: 	 * is open, and there's something to read;
     247: 	 * but if we lost the slave or we're NBIO,
     248: 	 * then return the appropriate error instead.
     249: 	 */
     250:     for (;;) {
     251:         if (tp->t_state&TS_ISOPEN) {
     252:             if (pti->pt_flags&PF_PKT && pti->pt_send) {
     253:                 error = ureadc((int)pti->pt_send, uio);
     254:                 if (error)
     255:                     return (error);
     256:                 pti->pt_send = 0;
     257:                 return (0);
     258:             }
     259:             if (pti->pt_flags&PF_UCNTL && pti->pt_ucntl) {
     260:                 error = ureadc((int)pti->pt_ucntl, uio);
     261:                 if (error)
     262:                     return (error);
     263:                 pti->pt_ucntl = 0;
     264:                 return (0);
     265:             }
     266:             if (tp->t_outq.c_cc && (tp->t_state&TS_TTSTOP) == 0)
     267:                 break;
     268:         }
     269:         if ((tp->t_state&TS_CARR_ON) == 0)
     270:             return (0); /* EOF */
     271:         if (flag & IO_NDELAY)
     272:             return (EWOULDBLOCK);
     273:         sleep((caddr_t)&tp->t_outq.c_cf, TTIPRI);
     274:     }
     275:     if (pti->pt_flags & (PF_PKT|PF_UCNTL))
     276:         error = ureadc(0, uio);
     277:     while (uio->uio_resid && error == 0) {
     278:         cc = q_to_b(&tp->t_outq, buf, MIN(uio->uio_resid, BUFSIZ));
     279:         if (cc <= 0)
     280:             break;
     281:         error = uiomove(buf, cc, uio);
     282:     }
     283:     if (tp->t_outq.c_cc <= TTLOWAT(tp)) {
     284:         if (tp->t_state&TS_ASLEEP) {
     285:             tp->t_state &= ~TS_ASLEEP;
     286:             wakeup((caddr_t)&tp->t_outq);
     287:         }
     288:         if (tp->t_wsel) {
     289:             selwakeup(tp->t_wsel, tp->t_state & TS_WCOLL);
     290:             tp->t_wsel = 0;
     291:             tp->t_state &= ~TS_WCOLL;
     292:         }
     293:     }
     294:     return (error);
     295: }
     296:
     297: ptsstop(tp, flush)
     298:     register struct tty *tp;
     299:     int flush;
     300: {
     301:     struct pt_ioctl *pti = &pt_ioctl[minor(tp->t_dev)];
     302:     int flag;
     303:
     304:     /* note: FLUSHREAD and FLUSHWRITE already ok */
     305:     if (flush == 0) {
     306:         flush = TIOCPKT_STOP;
     307:         pti->pt_flags |= PF_STOPPED;
     308:     } else
     309:         pti->pt_flags &= ~PF_STOPPED;
     310:     pti->pt_send |= flush;
     311:     /* change of perspective */
     312:     flag = 0;
     313:     if (flush & FREAD)
     314:         flag |= FWRITE;
     315:     if (flush & FWRITE)
     316:         flag |= FREAD;
     317:     ptcwakeup(tp, flag);
     318: }
     319:
     320: ptcselect(dev, rw)
     321:     dev_t dev;
     322:     int rw;
     323: {
     324:     register struct tty *tp = &pt_tty[minor(dev)];
     325:     struct pt_ioctl *pti = &pt_ioctl[minor(dev)];
     326:     struct proc *p;
     327:     int s;
     328:
     329:     if ((tp->t_state&TS_CARR_ON) == 0)
     330:         return (1);
     331:     switch (rw) {
     332:
     333:     case FREAD:
     334:         /*
     335: 		 * Need to block timeouts (ttrstart).
     336: 		 */
     337:         s = spltty();
     338:         if ((tp->t_state&TS_ISOPEN) &&
     339:              tp->t_outq.c_cc && (tp->t_state&TS_TTSTOP) == 0) {
     340:             splx(s);
     341:             return (1);
     342:         }
     343:         splx(s);
     344:         /* FALLTHROUGH */
     345:
     346:     case 0:                 /* exceptional */
     347:         if ((tp->t_state&TS_ISOPEN) &&
     348:             (pti->pt_flags&PF_PKT && pti->pt_send ||
     349:              pti->pt_flags&PF_UCNTL && pti->pt_ucntl))
     350:             return (1);
     351:         if ((p = pti->pt_selr) && p->p_wchan == (caddr_t)&selwait)
     352:             pti->pt_flags |= PF_RCOLL;
     353:         else
     354:             pti->pt_selr = u.u_procp;
     355:         break;
     356:
     357:
     358:     case FWRITE:
     359:         if (tp->t_state&TS_ISOPEN) {
     360:             if (pti->pt_flags & PF_REMOTE) {
     361:                 if (tp->t_canq.c_cc == 0)
     362:                 return (1);
     363:             } else {
     364:                 if (tp->t_rawq.c_cc + tp->t_canq.c_cc < TTYHOG-2)
     365:                     return (1);
     366:                 if (tp->t_canq.c_cc == 0 &&
     367:                     (tp->t_flags & (RAW|CBREAK)) == 0)
     368:                     return (1);
     369:             }
     370:         }
     371:         if ((p = pti->pt_selw) && p->p_wchan == (caddr_t)&selwait)
     372:             pti->pt_flags |= PF_WCOLL;
     373:         else
     374:             pti->pt_selw = u.u_procp;
     375:         break;
     376:
     377:     }
     378:     return (0);
     379: }
     380:
     381: ptcwrite(dev, uio, flag)
     382:     dev_t dev;
     383:     register struct uio *uio;
     384:     int flag;
     385: {
     386:     register struct tty *tp = &pt_tty[minor(dev)];
     387:     register char *cp;
     388:     register int cc = 0;
     389:     char locbuf[BUFSIZ];
     390:     int cnt = 0;
     391:     struct pt_ioctl *pti = &pt_ioctl[minor(dev)];
     392:     int error = 0;
     393:
     394: again:
     395:     if ((tp->t_state&TS_ISOPEN) == 0)
     396:         goto block;
     397:     if (pti->pt_flags & PF_REMOTE) {
     398:         if (tp->t_canq.c_cc)
     399:             goto block;
     400:         while (uio->uio_resid && tp->t_canq.c_cc < TTYHOG - 1) {
     401:             if (cc == 0) {
     402:                 cc = MIN(uio->uio_resid, BUFSIZ);
     403:                 cc = MIN(cc, TTYHOG - 1 - tp->t_canq.c_cc);
     404:                 cp = locbuf;
     405:                 error = uiomove(cp, cc, uio);
     406:                 if (error)
     407:                     return (error);
     408:                 /* check again for safety */
     409:                 if ((tp->t_state&TS_ISOPEN) == 0)
     410:                     return (EIO);
     411:             }
     412:             if (cc)
     413:                 (void) b_to_q(cp, cc, &tp->t_canq);
     414:             cc = 0;
     415:         }
     416:         (void) putc(0, &tp->t_canq);
     417:         ttwakeup(tp);
     418:         wakeup((caddr_t)&tp->t_canq);
     419:         return (0);
     420:     }
     421:     while (uio->uio_resid > 0) {
     422:         if (cc == 0) {
     423:             cc = MIN(uio->uio_resid, BUFSIZ);
     424:             cp = locbuf;
     425:             error = uiomove(cp, cc, uio);
     426:             if (error)
     427:                 return (error);
     428:             /* check again for safety */
     429:             if ((tp->t_state&TS_ISOPEN) == 0)
     430:                 return (EIO);
     431:         }
     432:         while (cc > 0) {
     433:             if ((tp->t_rawq.c_cc + tp->t_canq.c_cc) >= TTYHOG - 2 &&
     434:                (tp->t_canq.c_cc > 0 ||
     435:                   tp->t_flags & (RAW|CBREAK))) {
     436:                 wakeup((caddr_t)&tp->t_rawq);
     437:                 goto block;
     438:             }
     439:             (*linesw[tp->t_line].l_rint)(*cp++, tp);
     440:             cnt++;
     441:             cc--;
     442:         }
     443:         cc = 0;
     444:     }
     445:     return (0);
     446: block:
     447:     /*
     448: 	 * Come here to wait for slave to open, for space
     449: 	 * in outq, or space in rawq.
     450: 	 */
     451:     if ((tp->t_state&TS_CARR_ON) == 0)
     452:         return (EIO);
     453:     if (flag & IO_NDELAY) {
     454:         /* adjust for data copied in but not written */
     455:         uio->uio_resid += cc;
     456:         if (cnt == 0)
     457:             return (EWOULDBLOCK);
     458:         return (0);
     459:     }
     460:     sleep((caddr_t)&tp->t_rawq.c_cf, TTOPRI);
     461:     goto again;
     462: }
     463:
     464: /*ARGSUSED*/
     465: ptyioctl(dev, cmd, data, flag)
     466:     caddr_t data;
     467:     u_int cmd;
     468:     dev_t dev;
     469:     int flag;
     470: {
     471:     register struct tty *tp = &pt_tty[minor(dev)];
     472:     register struct pt_ioctl *pti = &pt_ioctl[minor(dev)];
     473:     int stop, error;
     474:     extern ttyinput();
     475:
     476:     /*
     477: 	 * IF CONTROLLER STTY THEN MUST FLUSH TO PREVENT A HANG.
     478: 	 * ttywflush(tp) will hang if there are characters in the outq.
     479: 	 */
     480:     if (cdevsw[major(dev)].d_open == ptcopen)
     481:         switch (cmd) {
     482:
     483:         case TIOCPKT:
     484:             if (*(int *)data) {
     485:                 if (pti->pt_flags & PF_UCNTL)
     486:                     return (EINVAL);
     487:                 pti->pt_flags |= PF_PKT;
     488:             } else
     489:                 pti->pt_flags &= ~PF_PKT;
     490:             return (0);
     491:
     492:         case TIOCUCNTL:
     493:             if (*(int *)data) {
     494:                 if (pti->pt_flags & PF_PKT)
     495:                     return (EINVAL);
     496:                 pti->pt_flags |= PF_UCNTL;
     497:             } else
     498:                 pti->pt_flags &= ~PF_UCNTL;
     499:             return (0);
     500:
     501:         case TIOCREMOTE:
     502:             if (*(int *)data)
     503:                 pti->pt_flags |= PF_REMOTE;
     504:             else
     505:                 pti->pt_flags &= ~PF_REMOTE;
     506:             ttyflush(tp, FREAD|FWRITE);
     507:             return (0);
     508:
     509:         case TIOCSETP:
     510:         case TIOCSETN:
     511:         case TIOCSETD:
     512:             while (getc(&tp->t_outq) >= 0)
     513:                 ;
     514:             break;
     515:         }
     516: /*
     517:  * Unsure if the comment below still applies or not.  For now put the
     518:  * new code in ifdef'd out.
     519: */
     520:
     521: #ifdef  four_four_bsd
     522:     error = (*linesw[t->t_line].l_ioctl(tp, cmd, data, flag);
     523:     if (error < 0)
     524:         error = ttioctl(tp, cmd, data, flag);
     525: #else
     526:     error = ttioctl(tp, cmd, data, flag);
     527:     /*
     528: 	 * Since we use the tty queues internally,
     529: 	 * pty's can't be switched to disciplines which overwrite
     530: 	 * the queues.  We can't tell anything about the discipline
     531: 	 * from here...
     532: 	 */
     533:     if (linesw[tp->t_line].l_rint != ttyinput) {
     534:         (*linesw[tp->t_line].l_close)(tp, flag);
     535:         tp->t_line = 0;
     536:         (void)(*linesw[tp->t_line].l_open)(dev, tp);
     537:         error = ENOTTY;
     538:     }
     539: #endif
     540:     if (error < 0) {
     541:         if (pti->pt_flags & PF_UCNTL &&
     542:             (cmd & ~0xff) == UIOCCMD(0)) {
     543:             if (cmd & 0xff) {
     544:                 pti->pt_ucntl = (u_char)cmd;
     545:                 ptcwakeup(tp, FREAD);
     546:             }
     547:             return (0);
     548:         }
     549:         error = ENOTTY;
     550:     }
     551:     stop = (tp->t_flags & RAW) == 0 &&
     552:         tp->t_stopc == CTRL(s) && tp->t_startc == CTRL(q);
     553:     if (pti->pt_flags & PF_NOSTOP) {
     554:         if (stop) {
     555:             pti->pt_send &= ~TIOCPKT_NOSTOP;
     556:             pti->pt_send |= TIOCPKT_DOSTOP;
     557:             pti->pt_flags &= ~PF_NOSTOP;
     558:             ptcwakeup(tp, FREAD);
     559:         }
     560:     } else {
     561:         if (!stop) {
     562:             pti->pt_send &= ~TIOCPKT_DOSTOP;
     563:             pti->pt_send |= TIOCPKT_NOSTOP;
     564:             pti->pt_flags |= PF_NOSTOP;
     565:             ptcwakeup(tp, FREAD);
     566:         }
     567:     }
     568:     return (error);
     569: }
     570: #endif

#### Defined functions

ptcclose defined in line 222; never used
ptcopen defined in line 201; used 1 times

- in line 480

ptcread defined in line 234; never used
ptcselect defined in line 320; never used
ptcwakeup defined in line 177; used 8 times

- in line 84, 97, 137, 174, 317, 545, 558, 565

ptcwrite defined in line 381; never used
ptsclose defined in line 88; never used
ptsopen defined in line 59; never used
ptsread defined in line 100; never used
ptsstart defined in line 163; used 1 times

- in line 213

ptsstop defined in line 297; never used
ptswrite defined in line 146; never used
ptyioctl defined in line 465; never used

#### Defined variables

npty defined in line 48; used 2 times

- in line 66(2)

pt_ioctl defined in line 47; used 9 times

- in line 106, 166, 180, 215, 240, 301, 325, 391, 472

pt_tty defined in line 41; used 10 times

- in line 70, 94, 105, 153, 210, 228, 239, 324, 386, 471

#### Defined struct's

pt_ioctl defined in line 42; used 18 times

- in line 106(2), 166(2), 180(2), 206(2), 240(2), 301(2), 325(2), 391(2), 472(2)

#### Defined macros

BUFSIZ defined in line 35; used 5 times

- in line 241, 278, 389, 402, 423

NPTY defined in line 32; used 8 times

- in line 15, 30-31(2), 41, 47-48(2), 68, 208

PF_NOSTOP defined in line 55; used 3 times

- in line 553-557(2), 564

PF_PKT defined in line 52; used 6 times

- in line 252, 275, 348, 487-494(3)

PF_RCOLL defined in line 50; used 3 times

- in line 184-186(2), 352

PF_REMOTE defined in line 54; used 5 times

- in line 110, 360, 397, 503-505(2)

PF_STOPPED defined in line 53; used 4 times

- in line 170-171(2), 307-309(2)

PF_UCNTL defined in line 56; used 7 times

- in line 259, 275, 349, 485, 496-498(2), 541

PF_WCOLL defined in line 51; used 3 times

- in line 192-194(2), 372

Last modified: 1997-05-03 Generated: 2016-12-26 | Generated by src2html V0.67 page hit count: 1539 |