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
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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
| 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
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * $Id: tty_pty.c,v 1.60 1999/05/30 16:52:57 phk Exp $
| 34 * $Id: tty_pty.c,v 1.61 1999/05/31 11:27:38 phk Exp $
|
35 */
36
37/*
38 * Pseudo-teletype Driver
39 * (Actually two drivers, requiring two entries in 'cdevsw')
40 */
41#include "pty.h" /* XXX */
42#include "opt_compat.h"
| 35 */
36
37/*
38 * Pseudo-teletype Driver
39 * (Actually two drivers, requiring two entries in 'cdevsw')
40 */
41#include "pty.h" /* XXX */
42#include "opt_compat.h"
|
43#include "opt_devfs.h"
| |
44
45#include <sys/param.h>
46#include <sys/systm.h>
47#if defined(COMPAT_43) || defined(COMPAT_SUNOS)
48#include <sys/ioctl_compat.h>
49#endif
50#include <sys/proc.h>
51#include <sys/tty.h>
52#include <sys/conf.h>
53#include <sys/fcntl.h>
54#include <sys/poll.h>
55#include <sys/kernel.h>
56#include <sys/vnode.h>
57#include <sys/signalvar.h>
| 43
44#include <sys/param.h>
45#include <sys/systm.h>
46#if defined(COMPAT_43) || defined(COMPAT_SUNOS)
47#include <sys/ioctl_compat.h>
48#endif
49#include <sys/proc.h>
50#include <sys/tty.h>
51#include <sys/conf.h>
52#include <sys/fcntl.h>
53#include <sys/poll.h>
54#include <sys/kernel.h>
55#include <sys/vnode.h>
56#include <sys/signalvar.h>
|
| 57#include <sys/malloc.h>
|
58
| 58
|
59#ifdef DEVFS
60#include <sys/devfsext.h>
61#endif /*DEVFS*/
| 59MALLOC_DEFINE(M_PTY, "ptys", "pty data structures");
|
62
| 60
|
63#ifdef notyet
64static void ptyattach __P((int n));
65#endif
| |
66static void ptsstart __P((struct tty *tp));
67static void ptcwakeup __P((struct tty *tp, int flag));
| 61static void ptsstart __P((struct tty *tp));
62static void ptcwakeup __P((struct tty *tp, int flag));
|
| 63static void ptyinit __P((int n));
|
68
69static d_open_t ptsopen;
70static d_close_t ptsclose;
71static d_read_t ptsread;
72static d_write_t ptswrite;
73static d_ioctl_t ptyioctl;
74static d_stop_t ptsstop;
75static d_devtotty_t ptydevtotty;
76static d_open_t ptcopen;
77static d_close_t ptcclose;
78static d_read_t ptcread;
79static d_write_t ptcwrite;
80static d_poll_t ptcpoll;
81
82#define CDEV_MAJOR_S 5
83static struct cdevsw pts_cdevsw = {
84 /* open */ ptsopen,
85 /* close */ ptsclose,
86 /* read */ ptsread,
87 /* write */ ptswrite,
88 /* ioctl */ ptyioctl,
89 /* stop */ ptsstop,
90 /* reset */ noreset,
91 /* devtotty */ ptydevtotty,
92 /* poll */ ttpoll,
93 /* mmap */ nommap,
94 /* strategy */ nostrategy,
95 /* name */ "pts",
96 /* parms */ noparms,
97 /* maj */ CDEV_MAJOR_S,
98 /* dump */ nodump,
99 /* psize */ nopsize,
100 /* flags */ D_TTY,
101 /* maxio */ 0,
102 /* bmaj */ -1
103};
104
105#define CDEV_MAJOR_C 6
106static struct cdevsw ptc_cdevsw = {
107 /* open */ ptcopen,
108 /* close */ ptcclose,
109 /* read */ ptcread,
110 /* write */ ptcwrite,
111 /* ioctl */ ptyioctl,
112 /* stop */ nostop,
113 /* reset */ noreset,
114 /* devtotty */ ptydevtotty,
115 /* poll */ ptcpoll,
116 /* mmap */ nommap,
117 /* strategy */ nostrategy,
118 /* name */ "ptc",
119 /* parms */ noparms,
120 /* maj */ CDEV_MAJOR_C,
121 /* dump */ nodump,
122 /* psize */ nopsize,
123 /* flags */ D_TTY,
124 /* maxio */ 0,
125 /* bmaj */ -1
126};
127
| 64
65static d_open_t ptsopen;
66static d_close_t ptsclose;
67static d_read_t ptsread;
68static d_write_t ptswrite;
69static d_ioctl_t ptyioctl;
70static d_stop_t ptsstop;
71static d_devtotty_t ptydevtotty;
72static d_open_t ptcopen;
73static d_close_t ptcclose;
74static d_read_t ptcread;
75static d_write_t ptcwrite;
76static d_poll_t ptcpoll;
77
78#define CDEV_MAJOR_S 5
79static struct cdevsw pts_cdevsw = {
80 /* open */ ptsopen,
81 /* close */ ptsclose,
82 /* read */ ptsread,
83 /* write */ ptswrite,
84 /* ioctl */ ptyioctl,
85 /* stop */ ptsstop,
86 /* reset */ noreset,
87 /* devtotty */ ptydevtotty,
88 /* poll */ ttpoll,
89 /* mmap */ nommap,
90 /* strategy */ nostrategy,
91 /* name */ "pts",
92 /* parms */ noparms,
93 /* maj */ CDEV_MAJOR_S,
94 /* dump */ nodump,
95 /* psize */ nopsize,
96 /* flags */ D_TTY,
97 /* maxio */ 0,
98 /* bmaj */ -1
99};
100
101#define CDEV_MAJOR_C 6
102static struct cdevsw ptc_cdevsw = {
103 /* open */ ptcopen,
104 /* close */ ptcclose,
105 /* read */ ptcread,
106 /* write */ ptcwrite,
107 /* ioctl */ ptyioctl,
108 /* stop */ nostop,
109 /* reset */ noreset,
110 /* devtotty */ ptydevtotty,
111 /* poll */ ptcpoll,
112 /* mmap */ nommap,
113 /* strategy */ nostrategy,
114 /* name */ "ptc",
115 /* parms */ noparms,
116 /* maj */ CDEV_MAJOR_C,
117 /* dump */ nodump,
118 /* psize */ nopsize,
119 /* flags */ D_TTY,
120 /* maxio */ 0,
121 /* bmaj */ -1
122};
123
|
128#if NPTY == 1
129#undef NPTY
130#define NPTY 32 /* crude XXX */
131#warning You have only one pty defined, redefining to 32.
132#endif
133
134#ifdef DEVFS
135#define MAXUNITS (8 * 32)
136static void *devfs_token_pts[MAXUNITS];
137static void *devfs_token_ptc[MAXUNITS];
138static const char jnames[] = "pqrsPQRS";
139#if NPTY > MAXUNITS
140#undef NPTY
141#define NPTY MAXUNITS
142#warning Can't have more than 256 pty's with DEVFS defined.
143#endif
144#endif
145
| |
146#define BUFSIZ 100 /* Chunk size iomoved to/from user */
147
| 124#define BUFSIZ 100 /* Chunk size iomoved to/from user */
125
|
148/*
149 * pts == /dev/tty[pqrsPQRS][0123456789abcdefghijklmnopqrstuv]
150 * ptc == /dev/pty[pqrsPQRS][0123456789abcdefghijklmnopqrstuv]
151 */
152static struct tty pt_tty[NPTY]; /* XXX */
153static struct pt_ioctl {
| 126struct pt_ioctl {
|
154 int pt_flags;
155 struct selinfo pt_selr, pt_selw;
156 u_char pt_send;
157 u_char pt_ucntl;
| 127 int pt_flags;
128 struct selinfo pt_selr, pt_selw;
129 u_char pt_send;
130 u_char pt_ucntl;
|
158} pt_ioctl[NPTY]; /* XXX */
159static int npty = NPTY; /* for pstat -t */
| 131 struct tty pt_tty;
132};
|
160
161#define PF_PKT 0x08 /* packet mode */
162#define PF_STOPPED 0x10 /* user told stopped */
163#define PF_REMOTE 0x20 /* remote and flow controlled input */
164#define PF_NOSTOP 0x40
165#define PF_UCNTL 0x80 /* user control mode */
166
| 133
134#define PF_PKT 0x08 /* packet mode */
135#define PF_STOPPED 0x10 /* user told stopped */
136#define PF_REMOTE 0x20 /* remote and flow controlled input */
137#define PF_NOSTOP 0x40
138#define PF_UCNTL 0x80 /* user control mode */
139
|
167#ifdef notyet
| |
168/*
| 140/*
|
169 * Establish n (or default if n is 1) ptys in the system.
| 141 * This function creates and initializes a pts/ptc pair
|
170 *
| 142 *
|
171 * XXX cdevsw & pstat require the array `pty[]' to be an array
| 143 * pts == /dev/tty[pqrsPQRS][0123456789abcdefghijklmnopqrstuv]
144 * ptc == /dev/pty[pqrsPQRS][0123456789abcdefghijklmnopqrstuv]
145 *
146 * XXX: define and add mapping of upper minor bits to allow more
147 * than 256 ptys.
|
172 */
173static void
| 148 */
149static void
|
174ptyattach(n)
| 150ptyinit(n)
|
175 int n;
176{
| 151 int n;
152{
|
177 char *mem;
178 register u_long ntb;
179#define DEFAULT_NPTY 32
| 153 dev_t devs, devc;
154 char *names = "pqrsPQRS";
155 struct pt_ioctl *pt;
|
180
| 156
|
181 /* maybe should allow 0 => none? */
182 if (n <= 1)
183 n = DEFAULT_NPTY;
184 ntb = n * sizeof(struct tty);
185 mem = malloc(ntb + ALIGNBYTES + n * sizeof(struct pt_ioctl),
186 M_DEVBUF, M_WAITOK);
187 pt_tty = (struct tty *)mem;
188 mem = (char *)ALIGN(mem + ntb);
189 pt_ioctl = (struct pt_ioctl *)mem;
190 npty = n;
| 157 /* For now we only map the lower 8 bits of the minor */
158 if (n & ~0xff)
159 return;
160
161 devs = make_dev(&pts_cdevsw, n,
162 0, 0, 0666, "tty%c%r", names[n / 32], n % 32);
163 devc = make_dev(&ptc_cdevsw, n,
164 0, 0, 0666, "pty%c%r", names[n / 32], n % 32);
165
166 pt = malloc(sizeof(*pt), M_PTY, M_WAITOK);
167 bzero(pt, sizeof(*pt));
168 devs->si_drv1 = devc->si_drv1 = pt;
169 devs->si_tty_tty = devc->si_tty_tty = &pt->pt_tty;
|
191}
| 170}
|
192#endif
| |
193
194/*ARGSUSED*/
195static int
196ptsopen(dev, flag, devtype, p)
197 dev_t dev;
198 int flag, devtype;
199 struct proc *p;
200{
201 register struct tty *tp;
202 int error;
203
| 171
172/*ARGSUSED*/
173static int
174ptsopen(dev, flag, devtype, p)
175 dev_t dev;
176 int flag, devtype;
177 struct proc *p;
178{
179 register struct tty *tp;
180 int error;
181
|
204 if (minor(dev) >= npty)
205 return (ENXIO);
206 tp = &pt_tty[minor(dev)];
| 182 if (!dev->si_drv1)
183 ptyinit(minor(dev));
184 if (!dev->si_drv1)
185 return(ENXIO);
186 tp = dev->si_tty_tty;
|
207 if ((tp->t_state & TS_ISOPEN) == 0) {
208 ttychars(tp); /* Set up default chars */
209 tp->t_iflag = TTYDEF_IFLAG;
210 tp->t_oflag = TTYDEF_OFLAG;
211 tp->t_lflag = TTYDEF_LFLAG;
212 tp->t_cflag = TTYDEF_CFLAG;
213 tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED;
214 } else if (tp->t_state & TS_XCLUDE && suser(p))
215 return (EBUSY);
216 if (tp->t_oproc) /* Ctrlr still around. */
217 (void)(*linesw[tp->t_line].l_modem)(tp, 1);
218 while ((tp->t_state & TS_CARR_ON) == 0) {
219 if (flag&FNONBLOCK)
220 break;
221 error = ttysleep(tp, TSA_CARR_ON(tp), TTIPRI | PCATCH,
222 "ptsopn", 0);
223 if (error)
224 return (error);
225 }
226 error = (*linesw[tp->t_line].l_open)(dev, tp);
227 if (error == 0)
228 ptcwakeup(tp, FREAD|FWRITE);
229 return (error);
230}
231
232static int
233ptsclose(dev, flag, mode, p)
234 dev_t dev;
235 int flag, mode;
236 struct proc *p;
237{
238 register struct tty *tp;
239 int err;
240
| 187 if ((tp->t_state & TS_ISOPEN) == 0) {
188 ttychars(tp); /* Set up default chars */
189 tp->t_iflag = TTYDEF_IFLAG;
190 tp->t_oflag = TTYDEF_OFLAG;
191 tp->t_lflag = TTYDEF_LFLAG;
192 tp->t_cflag = TTYDEF_CFLAG;
193 tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED;
194 } else if (tp->t_state & TS_XCLUDE && suser(p))
195 return (EBUSY);
196 if (tp->t_oproc) /* Ctrlr still around. */
197 (void)(*linesw[tp->t_line].l_modem)(tp, 1);
198 while ((tp->t_state & TS_CARR_ON) == 0) {
199 if (flag&FNONBLOCK)
200 break;
201 error = ttysleep(tp, TSA_CARR_ON(tp), TTIPRI | PCATCH,
202 "ptsopn", 0);
203 if (error)
204 return (error);
205 }
206 error = (*linesw[tp->t_line].l_open)(dev, tp);
207 if (error == 0)
208 ptcwakeup(tp, FREAD|FWRITE);
209 return (error);
210}
211
212static int
213ptsclose(dev, flag, mode, p)
214 dev_t dev;
215 int flag, mode;
216 struct proc *p;
217{
218 register struct tty *tp;
219 int err;
220
|
241 tp = &pt_tty[minor(dev)];
| 221 tp = dev->si_tty_tty;
|
242 err = (*linesw[tp->t_line].l_close)(tp, flag);
243 ptsstop(tp, FREAD|FWRITE);
244 (void) ttyclose(tp);
245 return (err);
246}
247
248static int
249ptsread(dev, uio, flag)
250 dev_t dev;
251 struct uio *uio;
252 int flag;
253{
254 struct proc *p = curproc;
| 222 err = (*linesw[tp->t_line].l_close)(tp, flag);
223 ptsstop(tp, FREAD|FWRITE);
224 (void) ttyclose(tp);
225 return (err);
226}
227
228static int
229ptsread(dev, uio, flag)
230 dev_t dev;
231 struct uio *uio;
232 int flag;
233{
234 struct proc *p = curproc;
|
255 register struct tty *tp = &pt_tty[minor(dev)];
256 register struct pt_ioctl *pti = &pt_ioctl[minor(dev)];
| 235 register struct tty *tp = dev->si_tty_tty;
236 register struct pt_ioctl *pti = dev->si_drv1;
|
257 int error = 0;
258
259again:
260 if (pti->pt_flags & PF_REMOTE) {
261 while (isbackground(p, tp)) {
262 if ((p->p_sigignore & sigmask(SIGTTIN)) ||
263 (p->p_sigmask & sigmask(SIGTTIN)) ||
264 p->p_pgrp->pg_jobc == 0 ||
265 p->p_flag & P_PPWAIT)
266 return (EIO);
267 pgsignal(p->p_pgrp, SIGTTIN, 1);
268 error = ttysleep(tp, &lbolt, TTIPRI | PCATCH, "ptsbg",
269 0);
270 if (error)
271 return (error);
272 }
273 if (tp->t_canq.c_cc == 0) {
274 if (flag & IO_NDELAY)
275 return (EWOULDBLOCK);
276 error = ttysleep(tp, TSA_PTS_READ(tp), TTIPRI | PCATCH,
277 "ptsin", 0);
278 if (error)
279 return (error);
280 goto again;
281 }
282 while (tp->t_canq.c_cc > 1 && uio->uio_resid > 0)
283 if (ureadc(getc(&tp->t_canq), uio) < 0) {
284 error = EFAULT;
285 break;
286 }
287 if (tp->t_canq.c_cc == 1)
288 (void) getc(&tp->t_canq);
289 if (tp->t_canq.c_cc)
290 return (error);
291 } else
292 if (tp->t_oproc)
293 error = (*linesw[tp->t_line].l_read)(tp, uio, flag);
294 ptcwakeup(tp, FWRITE);
295 return (error);
296}
297
298/*
299 * Write to pseudo-tty.
300 * Wakeups of controlling tty will happen
301 * indirectly, when tty driver calls ptsstart.
302 */
303static int
304ptswrite(dev, uio, flag)
305 dev_t dev;
306 struct uio *uio;
307 int flag;
308{
309 register struct tty *tp;
310
| 237 int error = 0;
238
239again:
240 if (pti->pt_flags & PF_REMOTE) {
241 while (isbackground(p, tp)) {
242 if ((p->p_sigignore & sigmask(SIGTTIN)) ||
243 (p->p_sigmask & sigmask(SIGTTIN)) ||
244 p->p_pgrp->pg_jobc == 0 ||
245 p->p_flag & P_PPWAIT)
246 return (EIO);
247 pgsignal(p->p_pgrp, SIGTTIN, 1);
248 error = ttysleep(tp, &lbolt, TTIPRI | PCATCH, "ptsbg",
249 0);
250 if (error)
251 return (error);
252 }
253 if (tp->t_canq.c_cc == 0) {
254 if (flag & IO_NDELAY)
255 return (EWOULDBLOCK);
256 error = ttysleep(tp, TSA_PTS_READ(tp), TTIPRI | PCATCH,
257 "ptsin", 0);
258 if (error)
259 return (error);
260 goto again;
261 }
262 while (tp->t_canq.c_cc > 1 && uio->uio_resid > 0)
263 if (ureadc(getc(&tp->t_canq), uio) < 0) {
264 error = EFAULT;
265 break;
266 }
267 if (tp->t_canq.c_cc == 1)
268 (void) getc(&tp->t_canq);
269 if (tp->t_canq.c_cc)
270 return (error);
271 } else
272 if (tp->t_oproc)
273 error = (*linesw[tp->t_line].l_read)(tp, uio, flag);
274 ptcwakeup(tp, FWRITE);
275 return (error);
276}
277
278/*
279 * Write to pseudo-tty.
280 * Wakeups of controlling tty will happen
281 * indirectly, when tty driver calls ptsstart.
282 */
283static int
284ptswrite(dev, uio, flag)
285 dev_t dev;
286 struct uio *uio;
287 int flag;
288{
289 register struct tty *tp;
290
|
311 tp = &pt_tty[minor(dev)];
| 291 tp = dev->si_tty_tty;
|
312 if (tp->t_oproc == 0)
313 return (EIO);
314 return ((*linesw[tp->t_line].l_write)(tp, uio, flag));
315}
316
317/*
318 * Start output on pseudo-tty.
319 * Wake up process selecting or sleeping for input from controlling tty.
320 */
321static void
322ptsstart(tp)
323 struct tty *tp;
324{
| 292 if (tp->t_oproc == 0)
293 return (EIO);
294 return ((*linesw[tp->t_line].l_write)(tp, uio, flag));
295}
296
297/*
298 * Start output on pseudo-tty.
299 * Wake up process selecting or sleeping for input from controlling tty.
300 */
301static void
302ptsstart(tp)
303 struct tty *tp;
304{
|
325 register struct pt_ioctl *pti = &pt_ioctl[minor(tp->t_dev)];
| 305 register struct pt_ioctl *pti = tp->t_dev->si_drv1;
|
326
327 if (tp->t_state & TS_TTSTOP)
328 return;
329 if (pti->pt_flags & PF_STOPPED) {
330 pti->pt_flags &= ~PF_STOPPED;
331 pti->pt_send = TIOCPKT_START;
332 }
333 ptcwakeup(tp, FREAD);
334}
335
336static void
337ptcwakeup(tp, flag)
338 struct tty *tp;
339 int flag;
340{
| 306
307 if (tp->t_state & TS_TTSTOP)
308 return;
309 if (pti->pt_flags & PF_STOPPED) {
310 pti->pt_flags &= ~PF_STOPPED;
311 pti->pt_send = TIOCPKT_START;
312 }
313 ptcwakeup(tp, FREAD);
314}
315
316static void
317ptcwakeup(tp, flag)
318 struct tty *tp;
319 int flag;
320{
|
341 struct pt_ioctl *pti = &pt_ioctl[minor(tp->t_dev)];
| 321 struct pt_ioctl *pti = tp->t_dev->si_drv1;
|
342
343 if (flag & FREAD) {
344 selwakeup(&pti->pt_selr);
345 wakeup(TSA_PTC_READ(tp));
346 }
347 if (flag & FWRITE) {
348 selwakeup(&pti->pt_selw);
349 wakeup(TSA_PTC_WRITE(tp));
350 }
351}
352
353static int
354ptcopen(dev, flag, devtype, p)
355 dev_t dev;
356 int flag, devtype;
357 struct proc *p;
358{
359 register struct tty *tp;
360 struct pt_ioctl *pti;
361
| 322
323 if (flag & FREAD) {
324 selwakeup(&pti->pt_selr);
325 wakeup(TSA_PTC_READ(tp));
326 }
327 if (flag & FWRITE) {
328 selwakeup(&pti->pt_selw);
329 wakeup(TSA_PTC_WRITE(tp));
330 }
331}
332
333static int
334ptcopen(dev, flag, devtype, p)
335 dev_t dev;
336 int flag, devtype;
337 struct proc *p;
338{
339 register struct tty *tp;
340 struct pt_ioctl *pti;
341
|
362 if (minor(dev) >= npty)
363 return (ENXIO);
364 tp = &pt_tty[minor(dev)];
| 342 if (!dev->si_drv1)
343 ptyinit(minor(dev));
344 if (!dev->si_drv1)
345 return(ENXIO);
346 tp = dev->si_tty_tty;
|
365 if (tp->t_oproc)
366 return (EIO);
367 tp->t_oproc = ptsstart;
| 347 if (tp->t_oproc)
348 return (EIO);
349 tp->t_oproc = ptsstart;
|
368#ifdef sun4c
369 tp->t_stop = ptsstop;
370#endif
| |
371 (void)(*linesw[tp->t_line].l_modem)(tp, 1);
372 tp->t_lflag &= ~EXTPROC;
| 350 (void)(*linesw[tp->t_line].l_modem)(tp, 1);
351 tp->t_lflag &= ~EXTPROC;
|
373 pti = &pt_ioctl[minor(dev)];
| 352 pti = dev->si_drv1;
|
374 pti->pt_flags = 0;
375 pti->pt_send = 0;
376 pti->pt_ucntl = 0;
377 return (0);
378}
379
380static int
381ptcclose(dev, flags, fmt, p)
382 dev_t dev;
383 int flags;
384 int fmt;
385 struct proc *p;
386{
387 register struct tty *tp;
388
| 353 pti->pt_flags = 0;
354 pti->pt_send = 0;
355 pti->pt_ucntl = 0;
356 return (0);
357}
358
359static int
360ptcclose(dev, flags, fmt, p)
361 dev_t dev;
362 int flags;
363 int fmt;
364 struct proc *p;
365{
366 register struct tty *tp;
367
|
389 tp = &pt_tty[minor(dev)];
| 368 tp = dev->si_tty_tty;
|
390 (void)(*linesw[tp->t_line].l_modem)(tp, 0);
391
392 /*
393 * XXX MDMBUF makes no sense for ptys but would inhibit the above
394 * l_modem(). CLOCAL makes sense but isn't supported. Special
395 * l_modem()s that ignore carrier drop make no sense for ptys but
396 * may be in use because other parts of the line discipline make
397 * sense for ptys. Recover by doing everything that a normal
398 * ttymodem() would have done except for sending a SIGHUP.
399 */
400 if (tp->t_state & TS_ISOPEN) {
401 tp->t_state &= ~(TS_CARR_ON | TS_CONNECTED);
402 tp->t_state |= TS_ZOMBIE;
403 ttyflush(tp, FREAD | FWRITE);
404 }
405
406 tp->t_oproc = 0; /* mark closed */
407 return (0);
408}
409
410static int
411ptcread(dev, uio, flag)
412 dev_t dev;
413 struct uio *uio;
414 int flag;
415{
| 369 (void)(*linesw[tp->t_line].l_modem)(tp, 0);
370
371 /*
372 * XXX MDMBUF makes no sense for ptys but would inhibit the above
373 * l_modem(). CLOCAL makes sense but isn't supported. Special
374 * l_modem()s that ignore carrier drop make no sense for ptys but
375 * may be in use because other parts of the line discipline make
376 * sense for ptys. Recover by doing everything that a normal
377 * ttymodem() would have done except for sending a SIGHUP.
378 */
379 if (tp->t_state & TS_ISOPEN) {
380 tp->t_state &= ~(TS_CARR_ON | TS_CONNECTED);
381 tp->t_state |= TS_ZOMBIE;
382 ttyflush(tp, FREAD | FWRITE);
383 }
384
385 tp->t_oproc = 0; /* mark closed */
386 return (0);
387}
388
389static int
390ptcread(dev, uio, flag)
391 dev_t dev;
392 struct uio *uio;
393 int flag;
394{
|
416 register struct tty *tp = &pt_tty[minor(dev)];
417 struct pt_ioctl *pti = &pt_ioctl[minor(dev)];
| 395 register struct tty *tp = dev->si_tty_tty;
396 struct pt_ioctl *pti = dev->si_drv1;
|
418 char buf[BUFSIZ];
419 int error = 0, cc;
420
421 /*
422 * We want to block until the slave
423 * is open, and there's something to read;
424 * but if we lost the slave or we're NBIO,
425 * then return the appropriate error instead.
426 */
427 for (;;) {
428 if (tp->t_state&TS_ISOPEN) {
429 if (pti->pt_flags&PF_PKT && pti->pt_send) {
430 error = ureadc((int)pti->pt_send, uio);
431 if (error)
432 return (error);
433 if (pti->pt_send & TIOCPKT_IOCTL) {
434 cc = min(uio->uio_resid,
435 sizeof(tp->t_termios));
436 uiomove((caddr_t)&tp->t_termios, cc,
437 uio);
438 }
439 pti->pt_send = 0;
440 return (0);
441 }
442 if (pti->pt_flags&PF_UCNTL && pti->pt_ucntl) {
443 error = ureadc((int)pti->pt_ucntl, uio);
444 if (error)
445 return (error);
446 pti->pt_ucntl = 0;
447 return (0);
448 }
449 if (tp->t_outq.c_cc && (tp->t_state&TS_TTSTOP) == 0)
450 break;
451 }
452 if ((tp->t_state & TS_CONNECTED) == 0)
453 return (0); /* EOF */
454 if (flag & IO_NDELAY)
455 return (EWOULDBLOCK);
456 error = tsleep(TSA_PTC_READ(tp), TTIPRI | PCATCH, "ptcin", 0);
457 if (error)
458 return (error);
459 }
460 if (pti->pt_flags & (PF_PKT|PF_UCNTL))
461 error = ureadc(0, uio);
462 while (uio->uio_resid > 0 && error == 0) {
463 cc = q_to_b(&tp->t_outq, buf, min(uio->uio_resid, BUFSIZ));
464 if (cc <= 0)
465 break;
466 error = uiomove(buf, cc, uio);
467 }
468 ttwwakeup(tp);
469 return (error);
470}
471
472static void
473ptsstop(tp, flush)
474 register struct tty *tp;
475 int flush;
476{
| 397 char buf[BUFSIZ];
398 int error = 0, cc;
399
400 /*
401 * We want to block until the slave
402 * is open, and there's something to read;
403 * but if we lost the slave or we're NBIO,
404 * then return the appropriate error instead.
405 */
406 for (;;) {
407 if (tp->t_state&TS_ISOPEN) {
408 if (pti->pt_flags&PF_PKT && pti->pt_send) {
409 error = ureadc((int)pti->pt_send, uio);
410 if (error)
411 return (error);
412 if (pti->pt_send & TIOCPKT_IOCTL) {
413 cc = min(uio->uio_resid,
414 sizeof(tp->t_termios));
415 uiomove((caddr_t)&tp->t_termios, cc,
416 uio);
417 }
418 pti->pt_send = 0;
419 return (0);
420 }
421 if (pti->pt_flags&PF_UCNTL && pti->pt_ucntl) {
422 error = ureadc((int)pti->pt_ucntl, uio);
423 if (error)
424 return (error);
425 pti->pt_ucntl = 0;
426 return (0);
427 }
428 if (tp->t_outq.c_cc && (tp->t_state&TS_TTSTOP) == 0)
429 break;
430 }
431 if ((tp->t_state & TS_CONNECTED) == 0)
432 return (0); /* EOF */
433 if (flag & IO_NDELAY)
434 return (EWOULDBLOCK);
435 error = tsleep(TSA_PTC_READ(tp), TTIPRI | PCATCH, "ptcin", 0);
436 if (error)
437 return (error);
438 }
439 if (pti->pt_flags & (PF_PKT|PF_UCNTL))
440 error = ureadc(0, uio);
441 while (uio->uio_resid > 0 && error == 0) {
442 cc = q_to_b(&tp->t_outq, buf, min(uio->uio_resid, BUFSIZ));
443 if (cc <= 0)
444 break;
445 error = uiomove(buf, cc, uio);
446 }
447 ttwwakeup(tp);
448 return (error);
449}
450
451static void
452ptsstop(tp, flush)
453 register struct tty *tp;
454 int flush;
455{
|
477 struct pt_ioctl *pti = &pt_ioctl[minor(tp->t_dev)];
| 456 struct pt_ioctl *pti = tp->t_dev->si_drv1;
|
478 int flag;
479
480 /* note: FLUSHREAD and FLUSHWRITE already ok */
481 if (flush == 0) {
482 flush = TIOCPKT_STOP;
483 pti->pt_flags |= PF_STOPPED;
484 } else
485 pti->pt_flags &= ~PF_STOPPED;
486 pti->pt_send |= flush;
487 /* change of perspective */
488 flag = 0;
489 if (flush & FREAD)
490 flag |= FWRITE;
491 if (flush & FWRITE)
492 flag |= FREAD;
493 ptcwakeup(tp, flag);
494}
495
496static int
497ptcpoll(dev, events, p)
498 dev_t dev;
499 int events;
500 struct proc *p;
501{
| 457 int flag;
458
459 /* note: FLUSHREAD and FLUSHWRITE already ok */
460 if (flush == 0) {
461 flush = TIOCPKT_STOP;
462 pti->pt_flags |= PF_STOPPED;
463 } else
464 pti->pt_flags &= ~PF_STOPPED;
465 pti->pt_send |= flush;
466 /* change of perspective */
467 flag = 0;
468 if (flush & FREAD)
469 flag |= FWRITE;
470 if (flush & FWRITE)
471 flag |= FREAD;
472 ptcwakeup(tp, flag);
473}
474
475static int
476ptcpoll(dev, events, p)
477 dev_t dev;
478 int events;
479 struct proc *p;
480{
|
502 register struct tty *tp = &pt_tty[minor(dev)];
503 struct pt_ioctl *pti = &pt_ioctl[minor(dev)];
| 481 register struct tty *tp = dev->si_tty_tty;
482 struct pt_ioctl *pti = dev->si_drv1;
|
504 int revents = 0;
505 int s;
506
507 if ((tp->t_state & TS_CONNECTED) == 0)
508 return (seltrue(dev, events, p) | POLLHUP);
509
510 /*
511 * Need to block timeouts (ttrstart).
512 */
513 s = spltty();
514
515 if (events & (POLLIN | POLLRDNORM))
516 if ((tp->t_state & TS_ISOPEN) &&
517 ((tp->t_outq.c_cc && (tp->t_state & TS_TTSTOP) == 0) ||
518 ((pti->pt_flags & PF_PKT) && pti->pt_send) ||
519 ((pti->pt_flags & PF_UCNTL) && pti->pt_ucntl)))
520 revents |= events & (POLLIN | POLLRDNORM);
521
522 if (events & (POLLOUT | POLLWRNORM))
523 if (tp->t_state & TS_ISOPEN &&
524 ((pti->pt_flags & PF_REMOTE) ?
525 (tp->t_canq.c_cc == 0) :
526 ((tp->t_rawq.c_cc + tp->t_canq.c_cc < TTYHOG - 2) ||
527 (tp->t_canq.c_cc == 0 && (tp->t_iflag & ICANON)))))
528 revents |= events & (POLLOUT | POLLWRNORM);
529
530 if (events & POLLHUP)
531 if ((tp->t_state & TS_CARR_ON) == 0)
532 revents |= POLLHUP;
533
534 if (revents == 0) {
535 if (events & (POLLIN | POLLRDNORM))
536 selrecord(p, &pti->pt_selr);
537
538 if (events & (POLLOUT | POLLWRNORM))
539 selrecord(p, &pti->pt_selw);
540 }
541 splx(s);
542
543 return (revents);
544}
545
546static int
547ptcwrite(dev, uio, flag)
548 dev_t dev;
549 register struct uio *uio;
550 int flag;
551{
| 483 int revents = 0;
484 int s;
485
486 if ((tp->t_state & TS_CONNECTED) == 0)
487 return (seltrue(dev, events, p) | POLLHUP);
488
489 /*
490 * Need to block timeouts (ttrstart).
491 */
492 s = spltty();
493
494 if (events & (POLLIN | POLLRDNORM))
495 if ((tp->t_state & TS_ISOPEN) &&
496 ((tp->t_outq.c_cc && (tp->t_state & TS_TTSTOP) == 0) ||
497 ((pti->pt_flags & PF_PKT) && pti->pt_send) ||
498 ((pti->pt_flags & PF_UCNTL) && pti->pt_ucntl)))
499 revents |= events & (POLLIN | POLLRDNORM);
500
501 if (events & (POLLOUT | POLLWRNORM))
502 if (tp->t_state & TS_ISOPEN &&
503 ((pti->pt_flags & PF_REMOTE) ?
504 (tp->t_canq.c_cc == 0) :
505 ((tp->t_rawq.c_cc + tp->t_canq.c_cc < TTYHOG - 2) ||
506 (tp->t_canq.c_cc == 0 && (tp->t_iflag & ICANON)))))
507 revents |= events & (POLLOUT | POLLWRNORM);
508
509 if (events & POLLHUP)
510 if ((tp->t_state & TS_CARR_ON) == 0)
511 revents |= POLLHUP;
512
513 if (revents == 0) {
514 if (events & (POLLIN | POLLRDNORM))
515 selrecord(p, &pti->pt_selr);
516
517 if (events & (POLLOUT | POLLWRNORM))
518 selrecord(p, &pti->pt_selw);
519 }
520 splx(s);
521
522 return (revents);
523}
524
525static int
526ptcwrite(dev, uio, flag)
527 dev_t dev;
528 register struct uio *uio;
529 int flag;
530{
|
552 register struct tty *tp = &pt_tty[minor(dev)];
| 531 register struct tty *tp = dev->si_tty_tty;
|
553 register u_char *cp = 0;
554 register int cc = 0;
555 u_char locbuf[BUFSIZ];
556 int cnt = 0;
| 532 register u_char *cp = 0;
533 register int cc = 0;
534 u_char locbuf[BUFSIZ];
535 int cnt = 0;
|
557 struct pt_ioctl *pti = &pt_ioctl[minor(dev)];
| 536 struct pt_ioctl *pti = dev->si_drv1;
|
558 int error = 0;
559
560again:
561 if ((tp->t_state&TS_ISOPEN) == 0)
562 goto block;
563 if (pti->pt_flags & PF_REMOTE) {
564 if (tp->t_canq.c_cc)
565 goto block;
566 while ((uio->uio_resid > 0 || cc > 0) &&
567 tp->t_canq.c_cc < TTYHOG - 1) {
568 if (cc == 0) {
569 cc = min(uio->uio_resid, BUFSIZ);
570 cc = min(cc, TTYHOG - 1 - tp->t_canq.c_cc);
571 cp = locbuf;
572 error = uiomove((caddr_t)cp, cc, uio);
573 if (error)
574 return (error);
575 /* check again for safety */
576 if ((tp->t_state & TS_ISOPEN) == 0) {
577 /* adjust as usual */
578 uio->uio_resid += cc;
579 return (EIO);
580 }
581 }
582 if (cc > 0) {
583 cc = b_to_q((char *)cp, cc, &tp->t_canq);
584 /*
585 * XXX we don't guarantee that the canq size
586 * is >= TTYHOG, so the above b_to_q() may
587 * leave some bytes uncopied. However, space
588 * is guaranteed for the null terminator if
589 * we don't fail here since (TTYHOG - 1) is
590 * not a multiple of CBSIZE.
591 */
592 if (cc > 0)
593 break;
594 }
595 }
596 /* adjust for data copied in but not written */
597 uio->uio_resid += cc;
598 (void) putc(0, &tp->t_canq);
599 ttwakeup(tp);
600 wakeup(TSA_PTS_READ(tp));
601 return (0);
602 }
603 while (uio->uio_resid > 0 || cc > 0) {
604 if (cc == 0) {
605 cc = min(uio->uio_resid, BUFSIZ);
606 cp = locbuf;
607 error = uiomove((caddr_t)cp, cc, uio);
608 if (error)
609 return (error);
610 /* check again for safety */
611 if ((tp->t_state & TS_ISOPEN) == 0) {
612 /* adjust for data copied in but not written */
613 uio->uio_resid += cc;
614 return (EIO);
615 }
616 }
617 while (cc > 0) {
618 if ((tp->t_rawq.c_cc + tp->t_canq.c_cc) >= TTYHOG - 2 &&
619 (tp->t_canq.c_cc > 0 || !(tp->t_iflag&ICANON))) {
620 wakeup(TSA_HUP_OR_INPUT(tp));
621 goto block;
622 }
623 (*linesw[tp->t_line].l_rint)(*cp++, tp);
624 cnt++;
625 cc--;
626 }
627 cc = 0;
628 }
629 return (0);
630block:
631 /*
632 * Come here to wait for slave to open, for space
633 * in outq, or space in rawq, or an empty canq.
634 */
635 if ((tp->t_state & TS_CONNECTED) == 0) {
636 /* adjust for data copied in but not written */
637 uio->uio_resid += cc;
638 return (EIO);
639 }
640 if (flag & IO_NDELAY) {
641 /* adjust for data copied in but not written */
642 uio->uio_resid += cc;
643 if (cnt == 0)
644 return (EWOULDBLOCK);
645 return (0);
646 }
647 error = tsleep(TSA_PTC_WRITE(tp), TTOPRI | PCATCH, "ptcout", 0);
648 if (error) {
649 /* adjust for data copied in but not written */
650 uio->uio_resid += cc;
651 return (error);
652 }
653 goto again;
654}
655
656static struct tty *
657ptydevtotty(dev)
658 dev_t dev;
659{
| 537 int error = 0;
538
539again:
540 if ((tp->t_state&TS_ISOPEN) == 0)
541 goto block;
542 if (pti->pt_flags & PF_REMOTE) {
543 if (tp->t_canq.c_cc)
544 goto block;
545 while ((uio->uio_resid > 0 || cc > 0) &&
546 tp->t_canq.c_cc < TTYHOG - 1) {
547 if (cc == 0) {
548 cc = min(uio->uio_resid, BUFSIZ);
549 cc = min(cc, TTYHOG - 1 - tp->t_canq.c_cc);
550 cp = locbuf;
551 error = uiomove((caddr_t)cp, cc, uio);
552 if (error)
553 return (error);
554 /* check again for safety */
555 if ((tp->t_state & TS_ISOPEN) == 0) {
556 /* adjust as usual */
557 uio->uio_resid += cc;
558 return (EIO);
559 }
560 }
561 if (cc > 0) {
562 cc = b_to_q((char *)cp, cc, &tp->t_canq);
563 /*
564 * XXX we don't guarantee that the canq size
565 * is >= TTYHOG, so the above b_to_q() may
566 * leave some bytes uncopied. However, space
567 * is guaranteed for the null terminator if
568 * we don't fail here since (TTYHOG - 1) is
569 * not a multiple of CBSIZE.
570 */
571 if (cc > 0)
572 break;
573 }
574 }
575 /* adjust for data copied in but not written */
576 uio->uio_resid += cc;
577 (void) putc(0, &tp->t_canq);
578 ttwakeup(tp);
579 wakeup(TSA_PTS_READ(tp));
580 return (0);
581 }
582 while (uio->uio_resid > 0 || cc > 0) {
583 if (cc == 0) {
584 cc = min(uio->uio_resid, BUFSIZ);
585 cp = locbuf;
586 error = uiomove((caddr_t)cp, cc, uio);
587 if (error)
588 return (error);
589 /* check again for safety */
590 if ((tp->t_state & TS_ISOPEN) == 0) {
591 /* adjust for data copied in but not written */
592 uio->uio_resid += cc;
593 return (EIO);
594 }
595 }
596 while (cc > 0) {
597 if ((tp->t_rawq.c_cc + tp->t_canq.c_cc) >= TTYHOG - 2 &&
598 (tp->t_canq.c_cc > 0 || !(tp->t_iflag&ICANON))) {
599 wakeup(TSA_HUP_OR_INPUT(tp));
600 goto block;
601 }
602 (*linesw[tp->t_line].l_rint)(*cp++, tp);
603 cnt++;
604 cc--;
605 }
606 cc = 0;
607 }
608 return (0);
609block:
610 /*
611 * Come here to wait for slave to open, for space
612 * in outq, or space in rawq, or an empty canq.
613 */
614 if ((tp->t_state & TS_CONNECTED) == 0) {
615 /* adjust for data copied in but not written */
616 uio->uio_resid += cc;
617 return (EIO);
618 }
619 if (flag & IO_NDELAY) {
620 /* adjust for data copied in but not written */
621 uio->uio_resid += cc;
622 if (cnt == 0)
623 return (EWOULDBLOCK);
624 return (0);
625 }
626 error = tsleep(TSA_PTC_WRITE(tp), TTOPRI | PCATCH, "ptcout", 0);
627 if (error) {
628 /* adjust for data copied in but not written */
629 uio->uio_resid += cc;
630 return (error);
631 }
632 goto again;
633}
634
635static struct tty *
636ptydevtotty(dev)
637 dev_t dev;
638{
|
660 if (minor(dev) >= npty)
| 639 if (minor(dev) & ~0xff)
|
661 return (NULL);
662
| 640 return (NULL);
641
|
663 return &pt_tty[minor(dev)];
| 642 return dev->si_tty_tty;
|
664}
665
666/*ARGSUSED*/
667static int
668ptyioctl(dev, cmd, data, flag, p)
669 dev_t dev;
670 u_long cmd;
671 caddr_t data;
672 int flag;
673 struct proc *p;
674{
| 643}
644
645/*ARGSUSED*/
646static int
647ptyioctl(dev, cmd, data, flag, p)
648 dev_t dev;
649 u_long cmd;
650 caddr_t data;
651 int flag;
652 struct proc *p;
653{
|
675 register struct tty *tp = &pt_tty[minor(dev)];
676 register struct pt_ioctl *pti = &pt_ioctl[minor(dev)];
| 654 register struct tty *tp = dev->si_tty_tty;
655 register struct pt_ioctl *pti = dev->si_drv1;
|
677 register u_char *cc = tp->t_cc;
678 int stop, error;
679
680 if (devsw(dev)->d_open == ptcopen) {
681 switch (cmd) {
682
683 case TIOCGPGRP:
684 /*
685 * We avoid calling ttioctl on the controller since,
686 * in that case, tp must be the controlling terminal.
687 */
688 *(int *)data = tp->t_pgrp ? tp->t_pgrp->pg_id : 0;
689 return (0);
690
691 case TIOCPKT:
692 if (*(int *)data) {
693 if (pti->pt_flags & PF_UCNTL)
694 return (EINVAL);
695 pti->pt_flags |= PF_PKT;
696 } else
697 pti->pt_flags &= ~PF_PKT;
698 return (0);
699
700 case TIOCUCNTL:
701 if (*(int *)data) {
702 if (pti->pt_flags & PF_PKT)
703 return (EINVAL);
704 pti->pt_flags |= PF_UCNTL;
705 } else
706 pti->pt_flags &= ~PF_UCNTL;
707 return (0);
708
709 case TIOCREMOTE:
710 if (*(int *)data)
711 pti->pt_flags |= PF_REMOTE;
712 else
713 pti->pt_flags &= ~PF_REMOTE;
714 ttyflush(tp, FREAD|FWRITE);
715 return (0);
716 }
717
718 /*
719 * The rest of the ioctls shouldn't be called until
720 * the slave is open.
721 */
722 if ((tp->t_state & TS_ISOPEN) == 0)
723 return (EAGAIN);
724
725 switch (cmd) {
726#ifdef COMPAT_43
727 case TIOCSETP:
728 case TIOCSETN:
729#endif
730 case TIOCSETD:
731 case TIOCSETA:
732 case TIOCSETAW:
733 case TIOCSETAF:
734 /*
735 * IF CONTROLLER STTY THEN MUST FLUSH TO PREVENT A HANG.
736 * ttywflush(tp) will hang if there are characters in
737 * the outq.
738 */
739 ndflush(&tp->t_outq, tp->t_outq.c_cc);
740 break;
741
742 case TIOCSIG:
743 if (*(unsigned int *)data >= NSIG ||
744 *(unsigned int *)data == 0)
745 return(EINVAL);
746 if ((tp->t_lflag&NOFLSH) == 0)
747 ttyflush(tp, FREAD|FWRITE);
748 pgsignal(tp->t_pgrp, *(unsigned int *)data, 1);
749 if ((*(unsigned int *)data == SIGINFO) &&
750 ((tp->t_lflag&NOKERNINFO) == 0))
751 ttyinfo(tp);
752 return(0);
753 }
754 }
755 if (cmd == TIOCEXT) {
756 /*
757 * When the EXTPROC bit is being toggled, we need
758 * to send an TIOCPKT_IOCTL if the packet driver
759 * is turned on.
760 */
761 if (*(int *)data) {
762 if (pti->pt_flags & PF_PKT) {
763 pti->pt_send |= TIOCPKT_IOCTL;
764 ptcwakeup(tp, FREAD);
765 }
766 tp->t_lflag |= EXTPROC;
767 } else {
768 if ((tp->t_lflag & EXTPROC) &&
769 (pti->pt_flags & PF_PKT)) {
770 pti->pt_send |= TIOCPKT_IOCTL;
771 ptcwakeup(tp, FREAD);
772 }
773 tp->t_lflag &= ~EXTPROC;
774 }
775 return(0);
776 }
777 error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, p);
778 if (error == ENOIOCTL)
779 error = ttioctl(tp, cmd, data, flag);
780 if (error == ENOIOCTL) {
781 if (pti->pt_flags & PF_UCNTL &&
782 (cmd & ~0xff) == UIOCCMD(0)) {
783 if (cmd & 0xff) {
784 pti->pt_ucntl = (u_char)cmd;
785 ptcwakeup(tp, FREAD);
786 }
787 return (0);
788 }
789 error = ENOTTY;
790 }
791 /*
792 * If external processing and packet mode send ioctl packet.
793 */
794 if ((tp->t_lflag&EXTPROC) && (pti->pt_flags & PF_PKT)) {
795 switch(cmd) {
796 case TIOCSETA:
797 case TIOCSETAW:
798 case TIOCSETAF:
799#ifdef COMPAT_43
800 case TIOCSETP:
801 case TIOCSETN:
802#endif
803#if defined(COMPAT_43) || defined(COMPAT_SUNOS)
804 case TIOCSETC:
805 case TIOCSLTC:
806 case TIOCLBIS:
807 case TIOCLBIC:
808 case TIOCLSET:
809#endif
810 pti->pt_send |= TIOCPKT_IOCTL;
811 ptcwakeup(tp, FREAD);
812 default:
813 break;
814 }
815 }
816 stop = (tp->t_iflag & IXON) && CCEQ(cc[VSTOP], CTRL('s'))
817 && CCEQ(cc[VSTART], CTRL('q'));
818 if (pti->pt_flags & PF_NOSTOP) {
819 if (stop) {
820 pti->pt_send &= ~TIOCPKT_NOSTOP;
821 pti->pt_send |= TIOCPKT_DOSTOP;
822 pti->pt_flags &= ~PF_NOSTOP;
823 ptcwakeup(tp, FREAD);
824 }
825 } else {
826 if (!stop) {
827 pti->pt_send &= ~TIOCPKT_DOSTOP;
828 pti->pt_send |= TIOCPKT_NOSTOP;
829 pti->pt_flags |= PF_NOSTOP;
830 ptcwakeup(tp, FREAD);
831 }
832 }
833 return (error);
834}
835
| 656 register u_char *cc = tp->t_cc;
657 int stop, error;
658
659 if (devsw(dev)->d_open == ptcopen) {
660 switch (cmd) {
661
662 case TIOCGPGRP:
663 /*
664 * We avoid calling ttioctl on the controller since,
665 * in that case, tp must be the controlling terminal.
666 */
667 *(int *)data = tp->t_pgrp ? tp->t_pgrp->pg_id : 0;
668 return (0);
669
670 case TIOCPKT:
671 if (*(int *)data) {
672 if (pti->pt_flags & PF_UCNTL)
673 return (EINVAL);
674 pti->pt_flags |= PF_PKT;
675 } else
676 pti->pt_flags &= ~PF_PKT;
677 return (0);
678
679 case TIOCUCNTL:
680 if (*(int *)data) {
681 if (pti->pt_flags & PF_PKT)
682 return (EINVAL);
683 pti->pt_flags |= PF_UCNTL;
684 } else
685 pti->pt_flags &= ~PF_UCNTL;
686 return (0);
687
688 case TIOCREMOTE:
689 if (*(int *)data)
690 pti->pt_flags |= PF_REMOTE;
691 else
692 pti->pt_flags &= ~PF_REMOTE;
693 ttyflush(tp, FREAD|FWRITE);
694 return (0);
695 }
696
697 /*
698 * The rest of the ioctls shouldn't be called until
699 * the slave is open.
700 */
701 if ((tp->t_state & TS_ISOPEN) == 0)
702 return (EAGAIN);
703
704 switch (cmd) {
705#ifdef COMPAT_43
706 case TIOCSETP:
707 case TIOCSETN:
708#endif
709 case TIOCSETD:
710 case TIOCSETA:
711 case TIOCSETAW:
712 case TIOCSETAF:
713 /*
714 * IF CONTROLLER STTY THEN MUST FLUSH TO PREVENT A HANG.
715 * ttywflush(tp) will hang if there are characters in
716 * the outq.
717 */
718 ndflush(&tp->t_outq, tp->t_outq.c_cc);
719 break;
720
721 case TIOCSIG:
722 if (*(unsigned int *)data >= NSIG ||
723 *(unsigned int *)data == 0)
724 return(EINVAL);
725 if ((tp->t_lflag&NOFLSH) == 0)
726 ttyflush(tp, FREAD|FWRITE);
727 pgsignal(tp->t_pgrp, *(unsigned int *)data, 1);
728 if ((*(unsigned int *)data == SIGINFO) &&
729 ((tp->t_lflag&NOKERNINFO) == 0))
730 ttyinfo(tp);
731 return(0);
732 }
733 }
734 if (cmd == TIOCEXT) {
735 /*
736 * When the EXTPROC bit is being toggled, we need
737 * to send an TIOCPKT_IOCTL if the packet driver
738 * is turned on.
739 */
740 if (*(int *)data) {
741 if (pti->pt_flags & PF_PKT) {
742 pti->pt_send |= TIOCPKT_IOCTL;
743 ptcwakeup(tp, FREAD);
744 }
745 tp->t_lflag |= EXTPROC;
746 } else {
747 if ((tp->t_lflag & EXTPROC) &&
748 (pti->pt_flags & PF_PKT)) {
749 pti->pt_send |= TIOCPKT_IOCTL;
750 ptcwakeup(tp, FREAD);
751 }
752 tp->t_lflag &= ~EXTPROC;
753 }
754 return(0);
755 }
756 error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, p);
757 if (error == ENOIOCTL)
758 error = ttioctl(tp, cmd, data, flag);
759 if (error == ENOIOCTL) {
760 if (pti->pt_flags & PF_UCNTL &&
761 (cmd & ~0xff) == UIOCCMD(0)) {
762 if (cmd & 0xff) {
763 pti->pt_ucntl = (u_char)cmd;
764 ptcwakeup(tp, FREAD);
765 }
766 return (0);
767 }
768 error = ENOTTY;
769 }
770 /*
771 * If external processing and packet mode send ioctl packet.
772 */
773 if ((tp->t_lflag&EXTPROC) && (pti->pt_flags & PF_PKT)) {
774 switch(cmd) {
775 case TIOCSETA:
776 case TIOCSETAW:
777 case TIOCSETAF:
778#ifdef COMPAT_43
779 case TIOCSETP:
780 case TIOCSETN:
781#endif
782#if defined(COMPAT_43) || defined(COMPAT_SUNOS)
783 case TIOCSETC:
784 case TIOCSLTC:
785 case TIOCLBIS:
786 case TIOCLBIC:
787 case TIOCLSET:
788#endif
789 pti->pt_send |= TIOCPKT_IOCTL;
790 ptcwakeup(tp, FREAD);
791 default:
792 break;
793 }
794 }
795 stop = (tp->t_iflag & IXON) && CCEQ(cc[VSTOP], CTRL('s'))
796 && CCEQ(cc[VSTART], CTRL('q'));
797 if (pti->pt_flags & PF_NOSTOP) {
798 if (stop) {
799 pti->pt_send &= ~TIOCPKT_NOSTOP;
800 pti->pt_send |= TIOCPKT_DOSTOP;
801 pti->pt_flags &= ~PF_NOSTOP;
802 ptcwakeup(tp, FREAD);
803 }
804 } else {
805 if (!stop) {
806 pti->pt_send &= ~TIOCPKT_DOSTOP;
807 pti->pt_send |= TIOCPKT_NOSTOP;
808 pti->pt_flags |= PF_NOSTOP;
809 ptcwakeup(tp, FREAD);
810 }
811 }
812 return (error);
813}
814
|
836static int ptc_devsw_installed;
| |
837
838static void ptc_drvinit __P((void *unused));
| 815
816static void ptc_drvinit __P((void *unused));
|
| 817
|
839static void
840ptc_drvinit(unused)
841 void *unused;
842{
| 818static void
819ptc_drvinit(unused)
820 void *unused;
821{
|
843#ifdef DEVFS
844 int i,j,k;
845#endif
| 822 static int ptc_devsw_installed;
|
846
847 if( ! ptc_devsw_installed ) {
848 cdevsw_add(&pts_cdevsw);
849 cdevsw_add(&ptc_cdevsw);
850 ptc_devsw_installed = 1;
| 823
824 if( ! ptc_devsw_installed ) {
825 cdevsw_add(&pts_cdevsw);
826 cdevsw_add(&ptc_cdevsw);
827 ptc_devsw_installed = 1;
|
851#ifdef DEVFS
852 for ( i = 0 ; i<NPTY ; i++ ) {
853 j = i / 32;
854 k = i % 32;
855 devfs_token_pts[i] =
856 devfs_add_devswf(&pts_cdevsw,i,
857 DV_CHR,0,0,0666,
858 "tty%c%r",jnames[j],k);
859 devfs_token_ptc[i] =
860 devfs_add_devswf(&ptc_cdevsw,i,
861 DV_CHR,0,0,0666,
862 "pty%c%r",jnames[j],k);
863 }
864#endif
| |
865 }
866}
867
868SYSINIT(ptcdev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR_C,ptc_drvinit,NULL)
| 828 }
829}
830
831SYSINIT(ptcdev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR_C,ptc_drvinit,NULL)
|