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snp.c (148868) snp.c (150298)
1/*-
2 * Copyright (c) 1995 Ugen J.S.Antsilevich
3 *
4 * Redistribution and use in source forms, with and without modification,
5 * are permitted provided that this entire comment appears intact.
6 *
7 * Redistribution in binary form may occur without any restrictions.
8 * Obviously, it would be nice if you gave credit where credit is due
9 * but requiring it would be too onerous.
10 *
11 * This software is provided ``AS IS'' without any warranties of any kind.
12 *
13 * Snoop stuff.
14 *
15 */
16
17#include <sys/cdefs.h>
1/*-
2 * Copyright (c) 1995 Ugen J.S.Antsilevich
3 *
4 * Redistribution and use in source forms, with and without modification,
5 * are permitted provided that this entire comment appears intact.
6 *
7 * Redistribution in binary form may occur without any restrictions.
8 * Obviously, it would be nice if you gave credit where credit is due
9 * but requiring it would be too onerous.
10 *
11 * This software is provided ``AS IS'' without any warranties of any kind.
12 *
13 * Snoop stuff.
14 *
15 */
16
17#include <sys/cdefs.h>
18__FBSDID("$FreeBSD: head/sys/dev/snp/snp.c 148868 2005-08-08 19:55:32Z rwatson $");
18__FBSDID("$FreeBSD: head/sys/dev/snp/snp.c 150298 2005-09-18 19:23:35Z cognet $");
19
20#include <sys/param.h>
21#include <sys/systm.h>
22#include <sys/fcntl.h>
23#include <sys/filio.h>
24#include <sys/malloc.h>
25#include <sys/tty.h>
26#include <sys/conf.h>
27#include <sys/poll.h>
28#include <sys/kernel.h>
29#include <sys/module.h>
30#include <sys/queue.h>
31#include <sys/snoop.h>
32#include <sys/uio.h>
19
20#include <sys/param.h>
21#include <sys/systm.h>
22#include <sys/fcntl.h>
23#include <sys/filio.h>
24#include <sys/malloc.h>
25#include <sys/tty.h>
26#include <sys/conf.h>
27#include <sys/poll.h>
28#include <sys/kernel.h>
29#include <sys/module.h>
30#include <sys/queue.h>
31#include <sys/snoop.h>
32#include <sys/uio.h>
33#include <sys/file.h>
34#include <sys/vnode.h>
33
34static l_close_t snplclose;
35static l_write_t snplwrite;
36static d_open_t snpopen;
37static d_close_t snpclose;
38static d_read_t snpread;
39static d_write_t snpwrite;
40static d_ioctl_t snpioctl;

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

513 u_long cmd;
514 caddr_t data;
515 int flags;
516 struct thread *td;
517{
518 struct snoop *snp;
519 struct tty *tp, *tpo;
520 struct cdev *tdev;
35
36static l_close_t snplclose;
37static l_write_t snplwrite;
38static d_open_t snpopen;
39static d_close_t snpclose;
40static d_read_t snpread;
41static d_write_t snpwrite;
42static d_ioctl_t snpioctl;

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

515 u_long cmd;
516 caddr_t data;
517 int flags;
518 struct thread *td;
519{
520 struct snoop *snp;
521 struct tty *tp, *tpo;
522 struct cdev *tdev;
523 struct file *fp;
521 int s;
522
523 snp = dev->si_drv1;
524 switch (cmd) {
525 case SNPSTTY:
524 int s;
525
526 snp = dev->si_drv1;
527 switch (cmd) {
528 case SNPSTTY:
526#if 0
527 tdev = findcdev(*((dev_t *)data));
528#else
529 tdev = NULL;
530#endif
529 s = *(int *)data;
530 if (s < 0 || fget(td, s, &fp) != 0)
531 return (EINVAL);
532 if (fp->f_type != DTYPE_VNODE ||
533 fp->f_vnode->v_type != VCHR) {
534 fdrop(fp, td);
535 return (EINVAL);
536 }
537 tdev = fp->f_vnode->v_rdev;
538 fdrop(fp, td);
531 if (tdev == NULL)
532 return (snp_down(snp));
533
534 tp = snpdevtotty(tdev);
535 if (!tp)
536 return (EINVAL);
537 if (tp->t_state & TS_SNOOP)
538 return (EBUSY);

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

580 break;
581
582 case FIONREAD:
583 s = spltty();
584 if (snp->snp_tty != NULL)
585 *(int *)data = snp->snp_len;
586 else
587 if (snp->snp_flags & SNOOP_DOWN) {
539 if (tdev == NULL)
540 return (snp_down(snp));
541
542 tp = snpdevtotty(tdev);
543 if (!tp)
544 return (EINVAL);
545 if (tp->t_state & TS_SNOOP)
546 return (EBUSY);

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

588 break;
589
590 case FIONREAD:
591 s = spltty();
592 if (snp->snp_tty != NULL)
593 *(int *)data = snp->snp_len;
594 else
595 if (snp->snp_flags & SNOOP_DOWN) {
596 printf("IT IS DOWN\n");
588 if (snp->snp_flags & SNOOP_OFLOW)
589 *(int *)data = SNP_OFLOW;
590 else
591 *(int *)data = SNP_TTYCLOSE;
592 } else {
593 *(int *)data = SNP_DETACH;
594 }
595 splx(s);

--- 92 unchanged lines hidden --- 		597 if (snp->snp_flags & SNOOP_OFLOW)
598 *(int *)data = SNP_OFLOW;
599 else
600 *(int *)data = SNP_TTYCLOSE;
601 } else {
602 *(int *)data = SNP_DETACH;
603 }
604 splx(s);

--- 92 unchanged lines hidden ---