From owner-freebsd-hackers  Tue Aug  8 20:34:15 1995
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To: Bruce Evans <bde@zeta.org.au>
cc: gclarkii@freefall.cdrom.com, freebsd-hackers@freefall.cdrom.com
Subject: Re: FoxPro II.1 
In-reply-to: Your message of "Wed, 09 Aug 95 12:39:43 +1000."
             <199508090239.MAA01237@godzilla.zeta.org.au> 
From: David Greenman <davidg@Root.COM>
Reply-To: davidg@Root.COM
Date: Tue, 08 Aug 1995 20:06:03 -0700
Sender: hackers-owner@FreeBSD.org
Precedence: bulk

>>CALL fcntl(0x4,0x6,0xefbfbf34)
...
>I think 99 is a translation of errno 45 (EOPNOTSUPP).  See /sys/i386/ibcs2/
>ibcs2_sysent.c#bsd_to_sysv_errno[NERR] (this table is apparently out of
>date - NERR is 80 but FreeBSD-current has 82 errnos).
>
>This is consistent with a valid process group/PID.  F_SETOWN on /dev/null
>is just not supported.  F_SETOWN is only supported for sockets and ttys and
>doesn't work right for ttys (it clashes with POSIX controlling terminal
>semantics).

   No, 0xefbfbf34 can never be a valid process group. ...but you're also
correct that this operation isn't support on /dev/null, either.

-DG