From owner-p4-projects  Wed Oct 23 12:49: 3 2002
Delivered-To: p4-projects@freebsd.org
Received: by hub.freebsd.org (Postfix, from userid 32767)
	id EDE4137B404; Wed, 23 Oct 2002 12:49:01 -0700 (PDT)
Delivered-To: perforce@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 82E9F37B401
	for <perforce@freebsd.org>; Wed, 23 Oct 2002 12:49:01 -0700 (PDT)
Received: from repoman.freebsd.org (repoman.freebsd.org [216.136.204.115])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 368F843E77
	for <perforce@freebsd.org>; Wed, 23 Oct 2002 12:49:01 -0700 (PDT)
	(envelope-from bb+lists.freebsd.perforce@cyrus.watson.org)
Received: from repoman.freebsd.org (localhost [127.0.0.1])
	by repoman.freebsd.org (8.12.6/8.12.6) with ESMTP id g9NJmLmV025487
	for <perforce@freebsd.org>; Wed, 23 Oct 2002 12:48:21 -0700 (PDT)
	(envelope-from bb+lists.freebsd.perforce@cyrus.watson.org)
Received: (from perforce@localhost)
	by repoman.freebsd.org (8.12.6/8.12.6/Submit) id g9NJmKKn025484
	for perforce@freebsd.org; Wed, 23 Oct 2002 12:48:20 -0700 (PDT)
Date: Wed, 23 Oct 2002 12:48:20 -0700 (PDT)
Message-Id: <200210231948.g9NJmKKn025484@repoman.freebsd.org>
X-Authentication-Warning: repoman.freebsd.org: perforce set sender to bb+lists.freebsd.perforce@cyrus.watson.org using -f
From: Robert Watson <rwatson@FreeBSD.org>
Subject: PERFORCE change 19988 for review
To: Perforce Change Reviews <perforce@freebsd.org>
Sender: owner-p4-projects@FreeBSD.ORG
Precedence: bulk
List-ID: <p4-projects.FreeBSD.ORG>
List-Archive: <http://docs.freebsd.org/mail/> (Web Archive)
List-Help: <mailto:majordomo@FreeBSD.ORG?subject=help> (List Instructions)
List-Subscribe: <mailto:majordomo@FreeBSD.ORG?subject=subscribe%20p4-projects>
List-Unsubscribe: <mailto:majordomo@FreeBSD.ORG?subject=unsubscribe%20p4-projects>
X-Loop: FreeBSD.ORG

http://perforce.freebsd.org/chv.cgi?CH=19988

Change 19988 by rwatson@rwatson_tislabs on 2002/10/23 12:47:58

	Possible workaround for a getsysctlbyname() problem: sysctl
	makes use of a special 0. namespace to handle MIB name
	lookup and related evil.  For now, exempt that namespace
	from integrity checks.  This probably bears revisiting.

Affected files ...

.. //depot/projects/trustedbsd/mac/sys/security/mac_biba/mac_biba.c#154 edit

Differences ...

==== //depot/projects/trustedbsd/mac/sys/security/mac_biba/mac_biba.c#154 (text+ko) ====

@@ -1864,9 +1864,13 @@
 
 	/*
 	 * Permit sysctl modification only if Biba-privileged; permit
-	 * read by any process.
+	 * read by any process.  Exempt certain management interfaces
+	 * that are used to query MIB state.  XXXMAC: This probably
+	 * requires some more review.
 	 */
 	if (new != NULL) {
+		if (namelen > 0 && name[0] == 0)
+			return (0);
 		if (!mac_biba_privileged(subj))
 			return (EPERM);
 	}

To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe p4-projects" in the body of the message