| pty.c (9619) | pty.c (9624) |
|---|---|
| 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 8.2 (Berkeley) 9/23/93 | 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 8.2 (Berkeley) 9/23/93 |
| 34 * $Id: tty_pty.c,v 1.11 1995/05/30 08:06:14 rgrimes Exp $ | 34 * $Id: tty_pty.c,v 1.12 1995/07/21 16:30:52 bde Exp $ |
| 35 */ 36 37/* 38 * Pseudo-teletype Driver 39 * (Actually two drivers, requiring two entries in 'cdevsw') 40 */ 41#include "pty.h" /* XXX */ 42 --- 89 unchanged lines hidden (view full) --- 132 } else if (tp->t_state&TS_XCLUDE && p->p_ucred->cr_uid != 0) 133 return (EBUSY); 134 if (tp->t_oproc) /* Ctrlr still around. */ 135 tp->t_state |= TS_CARR_ON; 136 while ((tp->t_state & TS_CARR_ON) == 0) { 137 if (flag&FNONBLOCK) 138 break; 139 error = ttysleep(tp, (caddr_t)&tp->t_rawq, TTIPRI | PCATCH, | 35 */ 36 37/* 38 * Pseudo-teletype Driver 39 * (Actually two drivers, requiring two entries in 'cdevsw') 40 */ 41#include "pty.h" /* XXX */ 42 --- 89 unchanged lines hidden (view full) --- 132 } else if (tp->t_state&TS_XCLUDE && p->p_ucred->cr_uid != 0) 133 return (EBUSY); 134 if (tp->t_oproc) /* Ctrlr still around. */ 135 tp->t_state |= TS_CARR_ON; 136 while ((tp->t_state & TS_CARR_ON) == 0) { 137 if (flag&FNONBLOCK) 138 break; 139 error = ttysleep(tp, (caddr_t)&tp->t_rawq, TTIPRI | PCATCH, |
| 140 ttopen, 0); | 140 "ptsopn", 0); |
| 141 if (error) 142 return (error); 143 } 144 error = (*linesw[tp->t_line].l_open)(dev, tp); 145 if (error == 0) 146 ptcwakeup(tp, FREAD|FWRITE); 147 return (error); 148} --- 29 unchanged lines hidden (view full) --- 178 if (pti->pt_flags & PF_REMOTE) { 179 while (isbackground(p, tp)) { 180 if ((p->p_sigignore & sigmask(SIGTTIN)) || 181 (p->p_sigmask & sigmask(SIGTTIN)) || 182 p->p_pgrp->pg_jobc == 0 || 183 p->p_flag & P_PPWAIT) 184 return (EIO); 185 pgsignal(p->p_pgrp, SIGTTIN, 1); | 141 if (error) 142 return (error); 143 } 144 error = (*linesw[tp->t_line].l_open)(dev, tp); 145 if (error == 0) 146 ptcwakeup(tp, FREAD|FWRITE); 147 return (error); 148} --- 29 unchanged lines hidden (view full) --- 178 if (pti->pt_flags & PF_REMOTE) { 179 while (isbackground(p, tp)) { 180 if ((p->p_sigignore & sigmask(SIGTTIN)) || 181 (p->p_sigmask & sigmask(SIGTTIN)) || 182 p->p_pgrp->pg_jobc == 0 || 183 p->p_flag & P_PPWAIT) 184 return (EIO); 185 pgsignal(p->p_pgrp, SIGTTIN, 1); |
| 186 error = ttysleep(tp, (caddr_t)&lbolt, 187 TTIPRI | PCATCH, ttybg, 0); | 186 error = ttysleep(tp, &lbolt, TTIPRI | PCATCH, "ptsbg", 187 0); |
| 188 if (error) 189 return (error); 190 } 191 if (tp->t_canq.c_cc == 0) { 192 if (flag & IO_NDELAY) 193 return (EWOULDBLOCK); | 188 if (error) 189 return (error); 190 } 191 if (tp->t_canq.c_cc == 0) { 192 if (flag & IO_NDELAY) 193 return (EWOULDBLOCK); |
| 194 error = ttysleep(tp, (caddr_t)&tp->t_canq, 195 TTIPRI | PCATCH, ttyin, 0); | 194 error = ttysleep(tp, &tp->t_canq, TTIPRI | PCATCH, 195 "ptsin", 0); |
| 196 if (error) 197 return (error); 198 goto again; 199 } 200 while (tp->t_canq.c_cc > 1 && uio->uio_resid > 0) 201 if (ureadc(getc(&tp->t_canq), uio) < 0) { 202 error = EFAULT; 203 break; --- 152 unchanged lines hidden (view full) --- 356 } 357 if (tp->t_outq.c_cc && (tp->t_state&TS_TTSTOP) == 0) 358 break; 359 } 360 if ((tp->t_state&TS_CARR_ON) == 0) 361 return (0); /* EOF */ 362 if (flag & IO_NDELAY) 363 return (EWOULDBLOCK); | 196 if (error) 197 return (error); 198 goto again; 199 } 200 while (tp->t_canq.c_cc > 1 && uio->uio_resid > 0) 201 if (ureadc(getc(&tp->t_canq), uio) < 0) { 202 error = EFAULT; 203 break; --- 152 unchanged lines hidden (view full) --- 356 } 357 if (tp->t_outq.c_cc && (tp->t_state&TS_TTSTOP) == 0) 358 break; 359 } 360 if ((tp->t_state&TS_CARR_ON) == 0) 361 return (0); /* EOF */ 362 if (flag & IO_NDELAY) 363 return (EWOULDBLOCK); |
| 364 error = tsleep((caddr_t)&tp->t_outq.c_cf, TTIPRI | PCATCH, 365 ttyin, 0); | 364 error = tsleep(&tp->t_outq.c_cf, TTIPRI | PCATCH, "ptcin", 0); |
| 366 if (error) 367 return (error); 368 } 369 if (pti->pt_flags & (PF_PKT|PF_UCNTL)) 370 error = ureadc(0, uio); 371 while (uio->uio_resid > 0 && error == 0) { 372 cc = q_to_b(&tp->t_outq, buf, min(uio->uio_resid, BUFSIZ)); 373 if (cc <= 0) --- 163 unchanged lines hidden (view full) --- 537 return (EIO); 538 if (flag & IO_NDELAY) { 539 /* adjust for data copied in but not written */ 540 uio->uio_resid += cc; 541 if (cnt == 0) 542 return (EWOULDBLOCK); 543 return (0); 544 } | 365 if (error) 366 return (error); 367 } 368 if (pti->pt_flags & (PF_PKT|PF_UCNTL)) 369 error = ureadc(0, uio); 370 while (uio->uio_resid > 0 && error == 0) { 371 cc = q_to_b(&tp->t_outq, buf, min(uio->uio_resid, BUFSIZ)); 372 if (cc <= 0) --- 163 unchanged lines hidden (view full) --- 536 return (EIO); 537 if (flag & IO_NDELAY) { 538 /* adjust for data copied in but not written */ 539 uio->uio_resid += cc; 540 if (cnt == 0) 541 return (EWOULDBLOCK); 542 return (0); 543 } |
| 545 error = tsleep((caddr_t)&tp->t_rawq.c_cl, TTOPRI | PCATCH, ttyout, 0); | 544 error = tsleep(&tp->t_rawq.c_cl, TTOPRI | PCATCH, "ptcout", 0); |
| 546 if (error) { 547 /* adjust for data copied in but not written */ 548 uio->uio_resid += cc; 549 return (error); 550 } 551 goto again; 552} 553 --- 167 unchanged lines hidden --- | 545 if (error) { 546 /* adjust for data copied in but not written */ 547 uio->uio_resid += cc; 548 return (error); 549 } 550 goto again; 551} 552 --- 167 unchanged lines hidden --- |