(a) remove the pointer to each driver's tty structure array from cdevsw

(b) add a function callback vector to tty drivers that will return a pointer
    to a valid tty structure based upon a dev_t
(c) make syscons structures the same size whether or not APM is enabled so
    utilities don't crash if NAPM changes (and make the damn kernel compile!)
(d) rewrite /dev/snp ioctl interface so that it is device driver and i386
    independant

1 files changed, 21 insertions, 1 deletions

diff --git a/sys/kern/tty_pty.c b/sys/kern/tty_pty.c
index 31a0673..14ef309 100644
--- a/sys/kern/tty_pty.c
+++ b/sys/kern/tty_pty.c
@@ -31,7 +31,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)tty_pty.c	8.2 (Berkeley) 9/23/93
- * $Id: tty_pty.c,v 1.5 1994/10/02 17:35:30 phk Exp $
+ * $Id: tty_pty.c,v 1.6 1994/10/29 23:59:48 ache Exp $
  */
 
 /*
@@ -552,6 +552,26 @@ block:
 	goto again;
 }
 
+struct tty *
+ptydevtotty(dev)
+	dev_t		dev;
+{
+	if (minor(dev) >= npty)
+		return (NULL);
+
+	return &pt_tty[minor(dev)];
+}
+
+int
+ptsselect(dev, rw, p)
+	dev_t		dev;
+	int		rw;
+	struct proc *   p;
+{
+	return ttyselect(ptydevtotty(dev), rw, p);
+}
+
+
 /*ARGSUSED*/
 int
 ptyioctl(dev, cmd, data, flag, p)