From owner-freebsd-lite2  Mon Sep 30 06:01:59 1996
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Date: Mon, 30 Sep 1996 22:20:47 +1000
From: Bruce Evans <bde@zeta.org.au>
Message-Id: <199609301220.WAA17001@godzilla.zeta.org.au>
To: dfr@freefall.freebsd.org, freebsd-lite2@freefall.freebsd.org
Subject: Re: cvs commit:  src/sys/miscfs/deadfs dead_vnops.c src/sys/miscfs/specfs spec_vnops.c
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>  Branch:      sys/miscfs/deadfs  LITE2
>  Modified:    sys/miscfs/deadfs  dead_vnops.c
>  Log:
>  Restore FreeBSD behaviour for dead_read.

I prefer the Lite2 behaviour.  The tty driver already implements it for
disconnected but unrevoked ttys, so applications must be used to it.
(POSIX allows either EOF or EIO for reads on disconnected ttys.)
Disconnection should be implemented using revoke() to free the physical
tty.

Bruce