From owner-freebsd-questions@FreeBSD.ORG  Wed Oct 23 03:07:39 2013
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
Delivered-To: freebsd-questions@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by hub.freebsd.org (Postfix) with ESMTP id CBCB4E4B
 for <freebsd-questions@freebsd.org>; Wed, 23 Oct 2013 03:07:39 +0000 (UTC)
 (envelope-from freebsd@dreamchaser.org)
Received: from nightmare.dreamchaser.org (nightmare.dreamchaser.org
 [12.32.44.142])
 (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by mx1.freebsd.org (Postfix) with ESMTPS id 964B02BD2
 for <freebsd-questions@freebsd.org>; Wed, 23 Oct 2013 03:07:38 +0000 (UTC)
Received: from breakaway.dreamchaser.org (breakaway.dreamchaser.org.
 [12.32.36.73])
 by nightmare.dreamchaser.org (8.13.6/8.13.6) with ESMTP id r9N37UO1016810
 for <freebsd-questions@freebsd.org>; Tue, 22 Oct 2013 21:07:30 -0600 (MDT)
 (envelope-from freebsd@dreamchaser.org)
Message-ID: <52673D72.9080606@dreamchaser.org>
Date: Tue, 22 Oct 2013 21:07:30 -0600
From: Gary Aitken <freebsd@dreamchaser.org>
User-Agent: Mozilla/5.0 (X11; FreeBSD amd64;
 rv:17.0) Gecko/20130730 Thunderbird/17.0.7
MIME-Version: 1.0
To: FreeBSD Mailing List <freebsd-questions@freebsd.org>
Subject: headers in /usr/include are 9.1 but /usr/src/sys are 9.0
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-2.0.2
 (nightmare.dreamchaser.org [12.32.36.65]);
 Tue, 22 Oct 2013 21:07:31 -0600 (MDT)
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.14
Precedence: list
Reply-To: freebsd@dreamchaser.org
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-questions>, 
 <mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
 <mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 23 Oct 2013 03:07:39 -0000

Using the generic kernel.
Some time ago I upgraded from 9.0 to 9.1 using freebsd-update.

originally, under 9.0, I had lsof installed (from ports).

Some time after all that I tried to reinstall sysutils/lsof and couldn't.
I wasn't desperate and ignored it...

Looking into it further, the problem appears to be the result of /usr/src/sys/sys/ containing 9.0.0 versions, and /usr/include/sys/ containing 9.1.0 versions.

I didn't think I had system source installed, but apparently I did.
I have vague recollections of telling the upgrade process not to upgrade
the source because I didn't think I had it installed; but maybe it doesn't
even ask.  I'm not really familiar with the process and it was a while back.

Anyhow...

1. Is /usr/src/sys/sys always present?

2. Do ports normally use headers from /usr/src/sys/sys instead of 
/usr/include/sys if /usr/src/sys/sys is present?

3. What's the best way to fix this?  
    freebsd-update fetch?

Gary