| pty.c (136680) | pty.c (139205) |
|---|---|
| 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 136680 2004-10-18 21:51:27Z phk $"); | 33__FBSDID("$FreeBSD: head/sys/kern/tty_pty.c 139205 2004-12-22 17:37:14Z 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> --- 7 unchanged lines hidden (view full) --- 49#endif 50#endif 51#include <sys/proc.h> 52#include <sys/tty.h> 53#include <sys/conf.h> 54#include <sys/fcntl.h> 55#include <sys/poll.h> 56#include <sys/kernel.h> | 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> --- 7 unchanged lines hidden (view full) --- 49#endif 50#endif 51#include <sys/proc.h> 52#include <sys/tty.h> 53#include <sys/conf.h> 54#include <sys/fcntl.h> 55#include <sys/poll.h> 56#include <sys/kernel.h> |
| 57#include <sys/vnode.h> | 57#include <sys/uio.h> |
| 58#include <sys/signalvar.h> 59#include <sys/malloc.h> 60 61static MALLOC_DEFINE(M_PTY, "ptys", "pty data structures"); 62 63static void ptsstart(struct tty *tp); 64static void ptsstop(struct tty *tp, int rw); 65static void ptcwakeup(struct tty *tp, int flag); --- 290 unchanged lines hidden (view full) --- 356 pt->pt_ucntl = 0; 357 return (0); 358 } 359 if (tp->t_outq.c_cc && (tp->t_state&TS_TTSTOP) == 0) 360 break; 361 } 362 if ((tp->t_state & TS_CONNECTED) == 0) 363 return (0); /* EOF */ | 58#include <sys/signalvar.h> 59#include <sys/malloc.h> 60 61static MALLOC_DEFINE(M_PTY, "ptys", "pty data structures"); 62 63static void ptsstart(struct tty *tp); 64static void ptsstop(struct tty *tp, int rw); 65static void ptcwakeup(struct tty *tp, int flag); --- 290 unchanged lines hidden (view full) --- 356 pt->pt_ucntl = 0; 357 return (0); 358 } 359 if (tp->t_outq.c_cc && (tp->t_state&TS_TTSTOP) == 0) 360 break; 361 } 362 if ((tp->t_state & TS_CONNECTED) == 0) 363 return (0); /* EOF */ |
| 364 if (flag & IO_NDELAY) | 364 if (flag & O_NONBLOCK) |
| 365 return (EWOULDBLOCK); 366 error = tsleep(TSA_PTC_READ(tp), TTIPRI | PCATCH, "ptcin", 0); 367 if (error) 368 return (error); 369 } 370 if (pt->pt_flags & (PF_PKT|PF_UCNTL)) 371 error = ureadc(0, uio); 372 while (uio->uio_resid > 0 && error == 0) { --- 119 unchanged lines hidden (view full) --- 492 * Come here to wait for slave to open, for space 493 * in outq, or space in rawq, or an empty canq. 494 */ 495 if ((tp->t_state & TS_CONNECTED) == 0) { 496 /* adjust for data copied in but not written */ 497 uio->uio_resid += cc; 498 return (EIO); 499 } | 365 return (EWOULDBLOCK); 366 error = tsleep(TSA_PTC_READ(tp), TTIPRI | PCATCH, "ptcin", 0); 367 if (error) 368 return (error); 369 } 370 if (pt->pt_flags & (PF_PKT|PF_UCNTL)) 371 error = ureadc(0, uio); 372 while (uio->uio_resid > 0 && error == 0) { --- 119 unchanged lines hidden (view full) --- 492 * Come here to wait for slave to open, for space 493 * in outq, or space in rawq, or an empty canq. 494 */ 495 if ((tp->t_state & TS_CONNECTED) == 0) { 496 /* adjust for data copied in but not written */ 497 uio->uio_resid += cc; 498 return (EIO); 499 } |
| 500 if (flag & IO_NDELAY) { | 500 if (flag & O_NONBLOCK) { |
| 501 /* adjust for data copied in but not written */ 502 uio->uio_resid += cc; 503 if (cnt == 0) 504 return (EWOULDBLOCK); 505 return (0); 506 } 507 error = tsleep(TSA_PTC_WRITE(tp), TTOPRI | PCATCH, "ptcout", 0); 508 if (error) { --- 220 unchanged lines hidden --- | 501 /* adjust for data copied in but not written */ 502 uio->uio_resid += cc; 503 if (cnt == 0) 504 return (EWOULDBLOCK); 505 return (0); 506 } 507 error = tsleep(TSA_PTC_WRITE(tp), TTOPRI | PCATCH, "ptcout", 0); 508 if (error) { --- 220 unchanged lines hidden --- |