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
--- 17 unchanged lines hidden (view full) ---
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * @(#)tty_pty.c 8.4 (Berkeley) 2/20/95
34 * $FreeBSD: head/sys/kern/tty_pty.c 111741 2003-03-02 15:50:23Z des $
35 */
36
37/*
38 * Pseudo-teletype Driver
39 * (Actually two drivers, requiring two entries in 'cdevsw')
40 */
41#include "opt_compat.h"
42#include <sys/param.h>
--- 377 unchanged lines hidden (view full) ---
420 if (tp->t_state&TS_ISOPEN) {
421 if (pti->pt_flags&PF_PKT && pti->pt_send) {
422 error = ureadc((int)pti->pt_send, uio);
423 if (error)
424 return (error);
425 if (pti->pt_send & TIOCPKT_IOCTL) {
426 cc = min(uio->uio_resid,
427 sizeof(tp->t_termios));
428 uiomove(&tp->t_termios, cc, uio);
429 }
430 pti->pt_send = 0;
431 return (0);
432 }
433 if (pti->pt_flags&PF_UCNTL && pti->pt_ucntl) {
434 error = ureadc((int)pti->pt_ucntl, uio);
435 if (error)
436 return (error);
--- 118 unchanged lines hidden (view full) ---
555 if (tp->t_canq.c_cc)
556 goto block;
557 while ((uio->uio_resid > 0 || cc > 0) &&
558 tp->t_canq.c_cc < TTYHOG - 1) {
559 if (cc == 0) {
560 cc = min(uio->uio_resid, BUFSIZ);
561 cc = min(cc, TTYHOG - 1 - tp->t_canq.c_cc);
562 cp = locbuf;
563 error = uiomove(cp, cc, uio);
564 if (error)
565 return (error);
566 /* check again for safety */
567 if ((tp->t_state & TS_ISOPEN) == 0) {
568 /* adjust as usual */
569 uio->uio_resid += cc;
570 return (EIO);
571 }
--- 18 unchanged lines hidden (view full) ---
590 ttwakeup(tp);
591 wakeup(TSA_PTS_READ(tp));
592 return (0);
593 }
594 while (uio->uio_resid > 0 || cc > 0) {
595 if (cc == 0) {
596 cc = min(uio->uio_resid, BUFSIZ);
597 cp = locbuf;
598 error = uiomove(cp, cc, uio);
599 if (error)
600 return (error);
601 /* check again for safety */
602 if ((tp->t_state & TS_ISOPEN) == 0) {
603 /* adjust for data copied in but not written */
604 uio->uio_resid += cc;
605 return (EIO);
606 }
--- 266 unchanged lines hidden ---
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
--- 17 unchanged lines hidden (view full) ---
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * @(#)tty_pty.c 8.4 (Berkeley) 2/20/95
34 * $FreeBSD: head/sys/kern/tty_pty.c 111741 2003-03-02 15:50:23Z des $
35 */
36
37/*
38 * Pseudo-teletype Driver
39 * (Actually two drivers, requiring two entries in 'cdevsw')
40 */
41#include "opt_compat.h"
42#include <sys/param.h>
--- 377 unchanged lines hidden (view full) ---
420 if (tp->t_state&TS_ISOPEN) {
421 if (pti->pt_flags&PF_PKT && pti->pt_send) {
422 error = ureadc((int)pti->pt_send, uio);
423 if (error)
424 return (error);
425 if (pti->pt_send & TIOCPKT_IOCTL) {
426 cc = min(uio->uio_resid,
427 sizeof(tp->t_termios));
428 uiomove(&tp->t_termios, cc, uio);
429 }
430 pti->pt_send = 0;
431 return (0);
432 }
433 if (pti->pt_flags&PF_UCNTL && pti->pt_ucntl) {
434 error = ureadc((int)pti->pt_ucntl, uio);
435 if (error)
436 return (error);
--- 118 unchanged lines hidden (view full) ---
555 if (tp->t_canq.c_cc)
556 goto block;
557 while ((uio->uio_resid > 0 || cc > 0) &&
558 tp->t_canq.c_cc < TTYHOG - 1) {
559 if (cc == 0) {
560 cc = min(uio->uio_resid, BUFSIZ);
561 cc = min(cc, TTYHOG - 1 - tp->t_canq.c_cc);
562 cp = locbuf;
563 error = uiomove(cp, cc, uio);
564 if (error)
565 return (error);
566 /* check again for safety */
567 if ((tp->t_state & TS_ISOPEN) == 0) {
568 /* adjust as usual */
569 uio->uio_resid += cc;
570 return (EIO);
571 }
--- 18 unchanged lines hidden (view full) ---
590 ttwakeup(tp);
591 wakeup(TSA_PTS_READ(tp));
592 return (0);
593 }
594 while (uio->uio_resid > 0 || cc > 0) {
595 if (cc == 0) {
596 cc = min(uio->uio_resid, BUFSIZ);
597 cp = locbuf;
598 error = uiomove(cp, cc, uio);
599 if (error)
600 return (error);
601 /* check again for safety */
602 if ((tp->t_state & TS_ISOPEN) == 0) {
603 /* adjust for data copied in but not written */
604 uio->uio_resid += cc;
605 return (EIO);
606 }
--- 266 unchanged lines hidden ---