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From: Ed Schouten <ed@FreeBSD.org>
To: Perforce Change Reviews <perforce@FreeBSD.org>
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Subject: PERFORCE change 150363 for review
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http://perforce.freebsd.org/chv.cgi?CH=150363

Change 150363 by ed@ed_dull on 2008/09/23 17:59:43

	Maybe a little safer: make sure we only allow hooks to be set on
	cdevs that use ttydev_cdevsw instead of relying on D_TTY.

Affected files ...

.. //depot/projects/mpsafetty/sys/kern/tty.c#43 edit

Differences ...

==== //depot/projects/mpsafetty/sys/kern/tty.c#43 (text+ko) ====

@@ -1690,7 +1690,7 @@
 	cdp = dev_refthread(dev);
 	if (cdp == NULL)
 		goto done1;
-	if ((cdp->d_flags & D_TTY) == 0)
+	if (cdp != &ttydev_cdevsw)
 		goto done2;
 	tp = dev->si_drv1;