Deleted Added
sdiff udiff text old ( 135298 ) new ( 135622 )
full compact
pty.c (135298) pty.c (135622)
1/*
2 * Copyright (c) 1982, 1986, 1989, 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

--- 16 unchanged lines hidden (view full) ---

25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * @(#)tty_pty.c 8.4 (Berkeley) 2/20/95
30 */
31
32#include <sys/cdefs.h>
1/*
2 * Copyright (c) 1982, 1986, 1989, 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

--- 16 unchanged lines hidden (view full) ---

25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * @(#)tty_pty.c 8.4 (Berkeley) 2/20/95
30 */
31
32#include <sys/cdefs.h>
33__FBSDID("$FreeBSD: head/sys/kern/tty_pty.c 135298 2004-09-16 12:07:25Z phk $");
33__FBSDID("$FreeBSD: head/sys/kern/tty_pty.c 135622 2004-09-23 16:13:46Z phk $");
34
35/*
36 * Pseudo-teletype Driver
37 * (Actually two drivers, requiring two entries in 'cdevsw')
38 */
39#include "opt_compat.h"
40#include "opt_tty.h"
41#include <sys/param.h>

--- 22 unchanged lines hidden (view full) ---

64static void ptsstop(struct tty *tp, int rw);
65static void ptcwakeup(struct tty *tp, int flag);
66static struct cdev *ptyinit(struct cdev *cdev);
67
68static d_open_t ptsopen;
69static d_close_t ptsclose;
70static d_read_t ptsread;
71static d_write_t ptswrite;
34
35/*
36 * Pseudo-teletype Driver
37 * (Actually two drivers, requiring two entries in 'cdevsw')
38 */
39#include "opt_compat.h"
40#include "opt_tty.h"
41#include <sys/param.h>

--- 22 unchanged lines hidden (view full) ---

64static void ptsstop(struct tty *tp, int rw);
65static void ptcwakeup(struct tty *tp, int flag);
66static struct cdev *ptyinit(struct cdev *cdev);
67
68static d_open_t ptsopen;
69static d_close_t ptsclose;
70static d_read_t ptsread;
71static d_write_t ptswrite;
72static d_ioctl_t ptyioctl;
72static d_ioctl_t ptsioctl;
73static d_open_t ptcopen;
74static d_close_t ptcclose;
75static d_read_t ptcread;
73static d_open_t ptcopen;
74static d_close_t ptcclose;
75static d_read_t ptcread;
76static d_ioctl_t ptcioctl;
76static d_write_t ptcwrite;
77static d_poll_t ptcpoll;
78
79#define CDEV_MAJOR_S 5
80static struct cdevsw pts_cdevsw = {
81 .d_version = D_VERSION,
82 .d_open = ptsopen,
83 .d_close = ptsclose,
84 .d_read = ptsread,
85 .d_write = ptswrite,
77static d_write_t ptcwrite;
78static d_poll_t ptcpoll;
79
80#define CDEV_MAJOR_S 5
81static struct cdevsw pts_cdevsw = {
82 .d_version = D_VERSION,
83 .d_open = ptsopen,
84 .d_close = ptsclose,
85 .d_read = ptsread,
86 .d_write = ptswrite,
86 .d_ioctl = ptyioctl,
87 .d_ioctl = ptsioctl,
87 .d_name = "pts",
88 .d_maj = CDEV_MAJOR_S,
89 .d_flags = D_TTY | D_NEEDGIANT,
90};
91
92#define CDEV_MAJOR_C 6
93static struct cdevsw ptc_cdevsw = {
94 .d_version = D_VERSION,
95 .d_open = ptcopen,
96 .d_close = ptcclose,
97 .d_read = ptcread,
98 .d_write = ptcwrite,
88 .d_name = "pts",
89 .d_maj = CDEV_MAJOR_S,
90 .d_flags = D_TTY | D_NEEDGIANT,
91};
92
93#define CDEV_MAJOR_C 6
94static struct cdevsw ptc_cdevsw = {
95 .d_version = D_VERSION,
96 .d_open = ptcopen,
97 .d_close = ptcclose,
98 .d_read = ptcread,
99 .d_write = ptcwrite,
99 .d_ioctl = ptyioctl,
100 .d_ioctl = ptcioctl,
100 .d_poll = ptcpoll,
101 .d_name = "ptc",
102 .d_maj = CDEV_MAJOR_C,
103 .d_flags = D_TTY | D_NEEDGIANT,
104};
105
106#define BUFSIZ 100 /* Chunk size iomoved to/from user */
107

--- 406 unchanged lines hidden (view full) ---

514 uio->uio_resid += cc;
515 return (error);
516 }
517 goto again;
518}
519
520/*ARGSUSED*/
521static int
101 .d_poll = ptcpoll,
102 .d_name = "ptc",
103 .d_maj = CDEV_MAJOR_C,
104 .d_flags = D_TTY | D_NEEDGIANT,
105};
106
107#define BUFSIZ 100 /* Chunk size iomoved to/from user */
108

--- 406 unchanged lines hidden (view full) ---

515 uio->uio_resid += cc;
516 return (error);
517 }
518 goto again;
519}
520
521/*ARGSUSED*/
522static int
522ptyioctl(struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td)
523ptcioctl(struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td)
523{
524 struct tty *tp = dev->si_tty;
525 struct ptsc *pt = dev->si_drv1;
524{
525 struct tty *tp = dev->si_tty;
526 struct ptsc *pt = dev->si_drv1;
526 u_char *cc = tp->t_cc;
527 int stop, error;
528
527
529 if (devsw(dev)->d_open == ptcopen) {
530 switch (cmd) {
528 switch (cmd) {
531
529
532 case TIOCGPGRP:
533 /*
534 * We avoid calling ttioctl on the controller since,
535 * in that case, tp must be the controlling terminal.
536 */
537 *(int *)data = tp->t_pgrp ? tp->t_pgrp->pg_id : 0;
538 return (0);
530 case TIOCGPGRP:
531 /*
532 * We avoid calling ttioctl on the controller since,
533 * in that case, tp must be the controlling terminal.
534 */
535 *(int *)data = tp->t_pgrp ? tp->t_pgrp->pg_id : 0;
536 return (0);
539
537
540 case TIOCPKT:
541 if (*(int *)data) {
542 if (pt->pt_flags & PF_UCNTL)
543 return (EINVAL);
544 pt->pt_flags |= PF_PKT;
545 } else
546 pt->pt_flags &= ~PF_PKT;
547 return (0);
538 case TIOCPKT:
539 if (*(int *)data) {
540 if (pt->pt_flags & PF_UCNTL)
541 return (EINVAL);
542 pt->pt_flags |= PF_PKT;
543 } else
544 pt->pt_flags &= ~PF_PKT;
545 return (0);
548
546
549 case TIOCUCNTL:
550 if (*(int *)data) {
551 if (pt->pt_flags & PF_PKT)
552 return (EINVAL);
553 pt->pt_flags |= PF_UCNTL;
554 } else
555 pt->pt_flags &= ~PF_UCNTL;
556 return (0);
557 }
547 case TIOCUCNTL:
548 if (*(int *)data) {
549 if (pt->pt_flags & PF_PKT)
550 return (EINVAL);
551 pt->pt_flags |= PF_UCNTL;
552 } else
553 pt->pt_flags &= ~PF_UCNTL;
554 return (0);
555 }
558
556
559 /*
560 * The rest of the ioctls shouldn't be called until
561 * the slave is open.
562 */
563 if ((tp->t_state & TS_ISOPEN) == 0)
564 return (EAGAIN);
557 /*
558 * The rest of the ioctls shouldn't be called until
559 * the slave is open.
560 */
561 if ((tp->t_state & TS_ISOPEN) == 0)
562 return (EAGAIN);
565
563
566 switch (cmd) {
564 switch (cmd) {
567#ifndef BURN_BRIDGES
568#ifdef COMPAT_43
565#ifndef BURN_BRIDGES
566#ifdef COMPAT_43
569 case TIOCSETP:
570 case TIOCSETN:
567 case TIOCSETP:
568 case TIOCSETN:
571#endif
572#endif
569#endif
570#endif
573 case TIOCSETD:
574 case TIOCSETA:
575 case TIOCSETAW:
576 case TIOCSETAF:
577 /*
578 * IF CONTROLLER STTY THEN MUST FLUSH TO PREVENT A HANG.
579 * ttywflush(tp) will hang if there are characters in
580 * the outq.
581 */
582 ndflush(&tp->t_outq, tp->t_outq.c_cc);
583 break;
571 case TIOCSETD:
572 case TIOCSETA:
573 case TIOCSETAW:
574 case TIOCSETAF:
575 /*
576 * IF CONTROLLER STTY THEN MUST FLUSH TO PREVENT A HANG.
577 * ttywflush(tp) will hang if there are characters in
578 * the outq.
579 */
580 ndflush(&tp->t_outq, tp->t_outq.c_cc);
581 break;
584
582
585 case TIOCSIG:
586 if (*(unsigned int *)data >= NSIG ||
587 *(unsigned int *)data == 0)
588 return(EINVAL);
589 if ((tp->t_lflag&NOFLSH) == 0)
590 ttyflush(tp, FREAD|FWRITE);
591 if (tp->t_pgrp != NULL) {
592 PGRP_LOCK(tp->t_pgrp);
593 pgsignal(tp->t_pgrp, *(unsigned int *)data, 1);
594 PGRP_UNLOCK(tp->t_pgrp);
595 }
596 if ((*(unsigned int *)data == SIGINFO) &&
597 ((tp->t_lflag&NOKERNINFO) == 0))
598 ttyinfo(tp);
599 return(0);
583 case TIOCSIG:
584 if (*(unsigned int *)data >= NSIG ||
585 *(unsigned int *)data == 0)
586 return(EINVAL);
587 if ((tp->t_lflag&NOFLSH) == 0)
588 ttyflush(tp, FREAD|FWRITE);
589 if (tp->t_pgrp != NULL) {
590 PGRP_LOCK(tp->t_pgrp);
591 pgsignal(tp->t_pgrp, *(unsigned int *)data, 1);
592 PGRP_UNLOCK(tp->t_pgrp);
600 }
593 }
594 if ((*(unsigned int *)data == SIGINFO) &&
595 ((tp->t_lflag&NOKERNINFO) == 0))
596 ttyinfo(tp);
597 return(0);
601 }
598 }
599
600 return (ptsioctl(dev, cmd, data, flag, td));
601}
602
603/*ARGSUSED*/
604static int
605ptsioctl(struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td)
606{
607 struct tty *tp = dev->si_tty;
608 struct ptsc *pt = dev->si_drv1;
609 u_char *cc = tp->t_cc;
610 int stop, error;
611
602 if (cmd == TIOCEXT) {
603 /*
604 * When the EXTPROC bit is being toggled, we need
605 * to send an TIOCPKT_IOCTL if the packet driver
606 * is turned on.
607 */
608 if (*(int *)data) {
609 if (pt->pt_flags & PF_PKT) {

--- 114 unchanged lines hidden --- 		612 if (cmd == TIOCEXT) {
613 /*
614 * When the EXTPROC bit is being toggled, we need
615 * to send an TIOCPKT_IOCTL if the packet driver
616 * is turned on.
617 */
618 if (*(int *)data) {
619 if (pt->pt_flags & PF_PKT) {

--- 114 unchanged lines hidden ---