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Date: Tue, 10 Oct 1995 05:49:13 +1000
From: Bruce Evans <bde@zeta.org.au>
Message-Id: <199510091949.FAA21844@godzilla.zeta.org.au>
To: imp@village.org, stu@cisco.com
Subject: Re: FleeBSD and XNTPD
Cc: hackers@freebsd.org, pst@cisco.com
Sender: owner-hackers@freebsd.org
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>:         if (ioctl(rio->fd, TIOCSPGRP, (char*)&pgrp) == -1) {
>:                 syslog(LOG_ERR, "ioctl(TIOCSPGRP) fails for clock I/O: %m");
>:                 return 1;
>:         }

>You are trying to set the process group of the terminal.  This has
>nothing to do with async I/O.  The F_SETOWN does, however.  I'm
>surprised that that didn't work.

F_SETOWN and TIOCSPGRP do exactly the same thing for ttys.  They both
specify the process that will obtain async notifications of i/o if such
notifications are enabled.

Bruce