From owner-freebsd-hackers@FreeBSD.ORG  Wed May 23 01:41:25 2007
Return-Path: <owner-freebsd-hackers@FreeBSD.ORG>
X-Original-To: freebsd-hackers@freebsd.org
Delivered-To: freebsd-hackers@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52])
	by hub.freebsd.org (Postfix) with ESMTP id A6DE316A468
	for <freebsd-hackers@freebsd.org>; Wed, 23 May 2007 01:41:25 +0000 (UTC)
	(envelope-from dmw@unete.cl)
Received: from mail02.ifxnetworks.com (mail02.ifxnetworks.com [190.61.128.12])
	by mx1.freebsd.org (Postfix) with ESMTP id 467A313C457
	for <freebsd-hackers@freebsd.org>; Wed, 23 May 2007 01:41:25 +0000 (UTC)
	(envelope-from dmw@unete.cl)
Received: (qmail 17972 invoked from network); 23 May 2007 01:41:24 -0000
X-Spam-DCC: dcc1: mail02.ifxnetworks.com 1182; Body=1 Fuz1=1 Fuz2=1 
X-Spam-Checker-Version: SpamAssassin 3.1.8 (2007-02-13) on
	mail02.ifxnetworks.com
X-Spam-Level: 
X-Spam-Status: No, score=0.0 required=6.0 tests=none autolearn=disabled
	version=3.1.8
Received: from unknown (HELO quake) (dmw@unete.cl@[200.73.29.73])
	(envelope-sender <dmw@unete.cl>)
	by mail02.ifxnetworks.com (qmail-ldap-1.03) with AES256-SHA encrypted
	SMTP for <freebsd-hackers@freebsd.org>; 23 May 2007 01:41:23 -0000
From: Daniel Molina Wegener <dmw@unete.cl>
Organization: DMW
To: freebsd-hackers@freebsd.org
Date: Tue, 22 May 2007 21:41:05 -0400
User-Agent: KMail/1.9.6
References: <200705201831.38828.dmw@unete.cl>
	<23B4A664-5916-47D3-8D42-282817F6CC70@FreeBSD.org>
	<20070522180647.GA11365@britannica.bec.de>
In-Reply-To: <20070522180647.GA11365@britannica.bec.de>
MIME-Version: 1.0
Content-Type: text/plain;
  charset="iso-8859-1"
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
Message-Id: <200705222141.06123.dmw@unete.cl>
Cc: Joerg Sonnenberger <joerg@britannica.bec.de>
Subject: Re: kqueue implementation
X-BeenThere: freebsd-hackers@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
Reply-To: dmw@unete.cl
List-Id: Technical Discussions relating to FreeBSD
	<freebsd-hackers.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>, 
	<mailto:freebsd-hackers-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-hackers>
List-Post: <mailto:freebsd-hackers@freebsd.org>
List-Help: <mailto:freebsd-hackers-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>,
	<mailto:freebsd-hackers-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 23 May 2007 01:41:25 -0000

On Tuesday 22 May 2007 14:06:48 Joerg Sonnenberger wrote:
> On Tue, May 22, 2007 at 10:04:37AM -0700, Suleiman Souhlal 
wrote:
> > >I mean vnode events, in the manual page I see NOTE_WRITE,
> > > but I need NOTE_OPEN and NOTE_READ. Is there any chance
> > > to get these kind of events?
> >
> > They should be easy to add.. All you would need to do for
> > NOTE_OPEN would be to add a vop_open_post  hook to VOP_OPEN
> > that calls VFS_KNOTE_LOCKED(..., NOTE_OPEN). Similarly for
> > read.
>
> If this is done, it should be done very carefully. There are
> some non-trivial security implications by this, for example
> the process hiding can be at least partly circumvented by
> adding a open filter on rtld or libc.so.

  Why?, I can't understand the point. On Linux the inotify
interface does the job. Why on FreeBSD shouldn't be applicable?.

>
> Joerg
>
> [SNIP]

Regards,
-- 
 .O. | Daniel Molina Wegener   | C/C++ Developer
 ..O | dmw [at] unete [dot] cl | FOSS Coding Adict
 OOO | BSD & Linux User        | Standards Rocks!