1 files changed, 0 insertions, 523 deletions

diff --git a/sys/dev/snp/snp.c b/sys/dev/snp/snp.c
deleted file mode 100644
index 84ad3adf1d32..000000000000
--- a/sys/dev/snp/snp.c
+++ /dev/null
@@ -1,523 +0,0 @@
-/*
- * Copyright (c) 1995 Ugen J.S.Antsilevich
- *
- * Redistribution and use in source forms, with and without modification,
- * are permitted provided that this entire comment appears intact.
- *
- * Redistribution in binary form may occur without any restrictions.
- * Obviously, it would be nice if you gave credit where credit is due
- * but requiring it would be too onerous.
- *
- * This software is provided ``AS IS'' without any warranties of any kind.
- *
- * Snoop stuff.
- *
- * $FreeBSD$
- */
-
-#include "snp.h"
-#include "opt_compat.h"
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/filio.h>
-#if defined(COMPAT_43) || defined(COMPAT_SUNOS)
-#include <sys/ioctl_compat.h>
-#endif
-#include <sys/proc.h>
-#include <sys/malloc.h>
-#include <sys/tty.h>
-#include <sys/conf.h>
-#include <sys/poll.h>
-#include <sys/kernel.h>
-#include <sys/snoop.h>
-#include <sys/vnode.h>
-
-static	d_open_t	snpopen;
-static	d_close_t	snpclose;
-static	d_read_t	snpread;
-static	d_write_t	snpwrite;
-static	d_ioctl_t	snpioctl;
-static	d_poll_t	snppoll;
-
-#define CDEV_MAJOR 53
-static struct cdevsw snp_cdevsw = {
-	/* open */	snpopen,
-	/* close */	snpclose,
-	/* read */	snpread,
-	/* write */	snpwrite,
-	/* ioctl */	snpioctl,
-	/* poll */	snppoll,
-	/* mmap */	nommap,
-	/* strategy */	nostrategy,
-	/* name */	"snp",
-	/* maj */	CDEV_MAJOR,
-	/* dump */	nodump,
-	/* psize */	nopsize,
-	/* flags */	0,
-	/* bmaj */	-1
-};
-
-
-#ifndef MIN
-#define MIN(a,b) (((a)<(b))?(a):(b))
-#endif
-
-static struct snoop snoopsw[NSNP];
-
-static struct tty	*snpdevtotty __P((dev_t dev));
-static int		snp_detach __P((struct snoop *snp));
-
-static struct tty *
-snpdevtotty (dev)
-	dev_t		dev;
-{
-	struct cdevsw	*cdp;
-
-	cdp = devsw(dev);
-	if (cdp && cdp->d_flags & D_TTY)
-		return (dev->si_tty);
-	return (NULL);
-}
-
-#define SNP_INPUT_BUF	5	/* This is even too  much,the maximal
-				 * interactive mode write is 3 bytes
-				 * length for function keys...
-				 */
-
-static	int
-snpwrite(dev, uio, flag)
-	dev_t           dev;
-	struct uio     *uio;
-	int             flag;
-{
-	int             unit = minor(dev), len, i, error;
-	struct snoop   *snp = &snoopsw[unit];
-	struct tty     *tp;
-	char		c[SNP_INPUT_BUF];
-
-	if (snp->snp_tty == NULL)
-		return (EIO);
-
-	tp = snp->snp_tty;
-
-	if ((tp->t_sc == snp) && (tp->t_state & TS_SNOOP) &&
-	    (tp->t_line == OTTYDISC || tp->t_line == NTTYDISC))
-		goto tty_input;
-
-	printf("Snoop: attempt to write to bad tty.\n");
-	return (EIO);
-
-tty_input:
-	if (!(tp->t_state & TS_ISOPEN))
-		return (EIO);
-
-	while (uio->uio_resid > 0) {
-		len = MIN(uio->uio_resid,SNP_INPUT_BUF);
-		if ((error = uiomove(c, len, uio)) != 0)
-			return (error);
-		for (i=0;i<len;i++) {
-			if (ttyinput(c[i] , tp))
-				return (EIO);
-		}
-	}
-	return 0;
-
-}
-
-
-static	int
-snpread(dev, uio, flag)
-	dev_t           dev;
-	struct uio     *uio;
-	int             flag;
-{
-	int             unit = minor(dev), s;
-	struct snoop   *snp = &snoopsw[unit];
-	int             len, n, nblen, error = 0;
-	caddr_t         from;
-	char           *nbuf;
-
-	KASSERT(snp->snp_len + snp->snp_base <= snp->snp_blen,
-	    ("snoop buffer error"));
-
-	if (snp->snp_tty == NULL)
-		return (EIO);
-
-	snp->snp_flags &= ~SNOOP_RWAIT;
-
-	do {
-		if (snp->snp_len == 0) {
-			if (flag & IO_NDELAY)
-				return (EWOULDBLOCK);
-			snp->snp_flags |= SNOOP_RWAIT;
-			tsleep((caddr_t) snp, (PZERO + 1) | PCATCH, "snoopread", 0);
-		}
-	} while (snp->snp_len == 0);
-
-	n = snp->snp_len;
-
-	while (snp->snp_len > 0 && uio->uio_resid > 0 && error == 0) {
-		len = MIN(uio->uio_resid, snp->snp_len);
-		from = (caddr_t) (snp->snp_buf + snp->snp_base);
-		if (len == 0)
-			break;
-
-		error = uiomove(from, len, uio);
-		snp->snp_base += len;
-		snp->snp_len -= len;
-	}
-	if ((snp->snp_flags & SNOOP_OFLOW) && (n < snp->snp_len)) {
-		snp->snp_flags &= ~SNOOP_OFLOW;
-	}
-	s = spltty();
-	nblen = snp->snp_blen;
-	if (((nblen / 2) >= SNOOP_MINLEN) && (nblen / 2) >= snp->snp_len) {
-		while (((nblen / 2) >= snp->snp_len) && ((nblen / 2) >= SNOOP_MINLEN))
-			nblen = nblen / 2;
-		if ((nbuf = malloc(nblen, M_TTYS, M_NOWAIT)) != NULL) {
-			bcopy(snp->snp_buf + snp->snp_base, nbuf, snp->snp_len);
-			free(snp->snp_buf, M_TTYS);
-			snp->snp_buf = nbuf;
-			snp->snp_blen = nblen;
-			snp->snp_base = 0;
-		}
-	}
-	splx(s);
-
-	return error;
-}
-
-int
-snpinc(struct snoop *snp, char c)
-{
-        char    buf[1];
-
-        buf[0]=c;
-        return (snpin(snp,buf,1));
-}
-
-
-int
-snpin(snp, buf, n)
-	struct snoop   *snp;
-	char           *buf;
-	int             n;
-{
-	int             s_free, s_tail;
-	int             s, len, nblen;
-	caddr_t         from, to;
-	char           *nbuf;
-
-	KASSERT(n >= 0, ("negative snoop char count"));
-
-	if (n == 0)
-		return 0;
-
-#ifdef DIAGNOSTIC
-	if (!(snp->snp_flags & SNOOP_OPEN)) {
-		printf("Snoop: data coming to closed device.\n");
-		return 0;
-	}
-#endif
-	if (snp->snp_flags & SNOOP_DOWN) {
-		printf("Snoop: more data to down interface.\n");
-		return 0;
-	}
-
-	if (snp->snp_flags & SNOOP_OFLOW) {
-		printf("Snoop: buffer overflow.\n");
-		/*
-		 * On overflow we just repeat the standart close
-		 * procedure...yes , this is waste of space but.. Then next
-		 * read from device will fail if one would recall he is
-		 * snooping and retry...
-		 */
-
-		return (snpdown(snp));
-	}
-	s_tail = snp->snp_blen - (snp->snp_len + snp->snp_base);
-	s_free = snp->snp_blen - snp->snp_len;
-
-
-	if (n > s_free) {
-		s = spltty();
-		nblen = snp->snp_blen;
-		while ((n > s_free) && ((nblen * 2) <= SNOOP_MAXLEN)) {
-			nblen = snp->snp_blen * 2;
-			s_free = nblen - (snp->snp_len + snp->snp_base);
-		}
-		if ((n <= s_free) && (nbuf = malloc(nblen, M_TTYS, M_NOWAIT))) {
-			bcopy(snp->snp_buf + snp->snp_base, nbuf, snp->snp_len);
-			free(snp->snp_buf, M_TTYS);
-			snp->snp_buf = nbuf;
-			snp->snp_blen = nblen;
-			snp->snp_base = 0;
-		} else {
-			snp->snp_flags |= SNOOP_OFLOW;
-			if (snp->snp_flags & SNOOP_RWAIT) {
-				snp->snp_flags &= ~SNOOP_RWAIT;
-				wakeup((caddr_t) snp);
-			}
-			splx(s);
-			return 0;
-		}
-		splx(s);
-	}
-	if (n > s_tail) {
-		from = (caddr_t) (snp->snp_buf + snp->snp_base);
-		to = (caddr_t) (snp->snp_buf);
-		len = snp->snp_len;
-		bcopy(from, to, len);
-		snp->snp_base = 0;
-	}
-	to = (caddr_t) (snp->snp_buf + snp->snp_base + snp->snp_len);
-	bcopy(buf, to, n);
-	snp->snp_len += n;
-
-	if (snp->snp_flags & SNOOP_RWAIT) {
-		snp->snp_flags &= ~SNOOP_RWAIT;
-		wakeup((caddr_t) snp);
-	}
-	selwakeup(&snp->snp_sel);
-	snp->snp_sel.si_pid = 0;
-
-	return n;
-}
-
-static	int
-snpopen(dev, flag, mode, p)
-	dev_t           dev;
-	int             flag, mode;
-	struct proc    *p;
-{
-	struct snoop   *snp;
-	register int    unit, error;
-
-	if ((error = suser(p)) != 0)
-		return (error);
-
-	if ((unit = minor(dev)) >= NSNP)
-		return (ENXIO);
-
-	snp = &snoopsw[unit];
-
-	if (snp->snp_flags & SNOOP_OPEN)
-		return (ENXIO);
-
-	/*
-	 * We intentionally do not OR flags with SNOOP_OPEN,but set them so
-	 * all previous settings (especially SNOOP_OFLOW) will be cleared.
-	 */
-	snp->snp_flags = SNOOP_OPEN;
-
-	snp->snp_buf = malloc(SNOOP_MINLEN, M_TTYS, M_WAITOK);
-	snp->snp_blen = SNOOP_MINLEN;
-	snp->snp_base = 0;
-	snp->snp_len = 0;
-
-	/*
-	 * snp_tty == NULL  is for inactive snoop devices.
-	 */
-	snp->snp_tty = NULL;
-	snp->snp_target = NODEV;
-	return (0);
-}
-
-
-static int
-snp_detach(snp)
-	struct snoop   *snp;
-{
-	struct tty     *tp;
-
-	snp->snp_base = 0;
-	snp->snp_len = 0;
-
-	/*
-	 * If line disc. changed we do not touch this pointer,SLIP/PPP will
-	 * change it anyway.
-	 */
-
-	if (snp->snp_tty == NULL)
-		goto detach_notty;
-
-	tp = snp->snp_tty;
-
-	if (tp && (tp->t_sc == snp) && (tp->t_state & TS_SNOOP) &&
-	    (tp->t_line == OTTYDISC || tp->t_line == NTTYDISC)) {
-		tp->t_sc = NULL;
-		tp->t_state &= ~TS_SNOOP;
-	} else
-		printf("Snoop: bad attached tty data.\n");
-
-	snp->snp_tty = NULL;
-	snp->snp_target = NODEV;
-
-detach_notty:
-	selwakeup(&snp->snp_sel);
-	snp->snp_sel.si_pid = 0;
-
-	return (0);
-}
-
-static	int
-snpclose(dev, flags, fmt, p)
-	dev_t           dev;
-	int             flags;
-	int             fmt;
-	struct proc    *p;
-{
-	register int    unit = minor(dev);
-	struct snoop   *snp = &snoopsw[unit];
-
-	snp->snp_blen = 0;
-	free(snp->snp_buf, M_TTYS);
-	snp->snp_flags &= ~SNOOP_OPEN;
-
-	return (snp_detach(snp));
-}
-
-int
-snpdown(snp)
-	struct snoop	*snp;
-{
-	snp->snp_blen = SNOOP_MINLEN;
-	free(snp->snp_buf, M_TTYS);
-	snp->snp_buf = malloc(SNOOP_MINLEN, M_TTYS, M_WAITOK);
-	snp->snp_flags |= SNOOP_DOWN;
-
-	return (snp_detach(snp));
-}
-
-
-static	int
-snpioctl(dev, cmd, data, flags, p)
-	dev_t           dev;
-	u_long          cmd;
-	caddr_t         data;
-	int             flags;
-	struct proc    *p;
-{
-	int             unit = minor(dev), s;
-	dev_t		tdev;
-	struct snoop   *snp = &snoopsw[unit];
-	struct tty     *tp, *tpo;
-
-	switch (cmd) {
-	case SNPSTTY:
-		tdev = udev2dev(*((udev_t *) data), 0);
-		if (tdev == NODEV)
-			return (snpdown(snp));
-
-		tp = snpdevtotty(tdev);
-		if (!tp)
-			return (EINVAL);
-
-		if ((tp->t_sc != (caddr_t) snp) && (tp->t_state & TS_SNOOP))
-			return (EBUSY);
-
-		if ((tp->t_line != OTTYDISC) && (tp->t_line != NTTYDISC))
-			return (EBUSY);
-
-		s = spltty();
-
-		if (snp->snp_target == NODEV) {
-			tpo = snp->snp_tty;
-			if (tpo)
-				tpo->t_state &= ~TS_SNOOP;
-		}
-
-		tp->t_sc = (caddr_t) snp;
-		tp->t_state |= TS_SNOOP;
-		snp->snp_tty = tp;
-		snp->snp_target = tdev;
-
-		/*
-		 * Clean overflow and down flags -
-		 * we'll have a chance to get them in the future :)))
-		 */
-		snp->snp_flags &= ~SNOOP_OFLOW;
-		snp->snp_flags &= ~SNOOP_DOWN;
-		splx(s);
-		break;
-
-	case SNPGTTY:
-		/*
-		 * We keep snp_target field specially to make
-		 * SNPGTTY happy,else we can't know what is device
-		 * major/minor for tty.
-		 */
-		*((dev_t *) data) = snp->snp_target;
-		break;
-
-	case FIONBIO:
-		break;
-
-	case FIOASYNC:
-		if (*(int *) data)
-			snp->snp_flags |= SNOOP_ASYNC;
-		else
-			snp->snp_flags &= ~SNOOP_ASYNC;
-		break;
-
-	case FIONREAD:
-		s = spltty();
-		if (snp->snp_tty != NULL)
-			*(int *) data = snp->snp_len;
-		else
-			if (snp->snp_flags & SNOOP_DOWN) {
-				if (snp->snp_flags & SNOOP_OFLOW)
-					*(int *) data = SNP_OFLOW;
-				else
-					*(int *) data = SNP_TTYCLOSE;
-			} else {
-				*(int *) data = SNP_DETACH;
-			}
-		splx(s);
-		break;
-
-	default:
-		return (ENOTTY);
-	}
-	return (0);
-}
-
-
-static	int
-snppoll(dev, events, p)
-	dev_t           dev;
-	int             events;
-	struct proc    *p;
-{
-	int             unit = minor(dev);
-	struct snoop   *snp = &snoopsw[unit];
-	int		revents = 0;
-
-
-	/*
-	 * If snoop is down,we don't want to poll() forever so we return 1.
-	 * Caller should see if we down via FIONREAD ioctl().The last should
-	 * return -1 to indicate down state.
-	 */
-	if (events & (POLLIN | POLLRDNORM)) {
-		if (snp->snp_flags & SNOOP_DOWN || snp->snp_len > 0)
-			revents |= events & (POLLIN | POLLRDNORM);
-		else
-			selrecord(p, &snp->snp_sel);
-	}
-	return (revents);
-}
-
-static void snp_drvinit __P((void *unused));
-
-static void
-snp_drvinit(unused)
-	void *unused;
-{
-	int	i;
-
-	for (i = 0; i < NSNP; i++) 
-		make_dev(&snp_cdevsw, i, 0, 0, 0600, "snp%d", i);
-}
-
-SYSINIT(snpdev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,snp_drvinit,NULL)