From owner-freebsd-hackers@FreeBSD.ORG  Sun Feb 20 16:22:17 2005
Return-Path: <owner-freebsd-hackers@FreeBSD.ORG>
Delivered-To: freebsd-hackers@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 4FEA316A4CE
	for <freebsd-hackers@freebsd.org>;
	Sun, 20 Feb 2005 16:22:17 +0000 (GMT)
Received: from f21.mail.ru (f21.mail.ru [194.67.57.54])
	by mx1.FreeBSD.org (Postfix) with ESMTP id F247543D1D
	for <freebsd-hackers@freebsd.org>;
	Sun, 20 Feb 2005 16:22:14 +0000 (GMT)
	(envelope-from shmukler@mail.ru)
Received: from mail by f21.mail.ru with local 
	id 1D2tqX-0003GO-00
	for freebsd-hackers@freebsd.org; Sun, 20 Feb 2005 19:22:13 +0300
Received: from [24.185.245.107] by win.mail.ru with HTTP;
	Sun, 20 Feb 2005 19:22:13 +0300
From: Igor Shmukler <shmukler@mail.ru>
To: freebsd-hackers@freebsd.org
Mime-Version: 1.0
X-Mailer: mPOP Web-Mail 2.19
X-Originating-IP: [24.185.245.107]
Date: Sun, 20 Feb 2005 19:22:13 +0300
Content-Type: text/plain; charset=koi8-r
Content-Transfer-Encoding: 8bit
Message-Id: <E1D2tqX-0003GO-00.shmukler-mail-ru@f21.mail.ru>
Subject: vn_fullpath()
X-BeenThere: freebsd-hackers@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
Reply-To: Igor Shmukler <shmukler@mail.ru>
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: Sun, 20 Feb 2005 16:22:17 -0000

Hello,

I was wondering if anyone has figured a way to make vn_fullpath() reliable?

Perhaps there is another approach to attacking this problem. Here is what I need
to accomplish:

I need to be able to determine dynamic linker, shared libraries or executable
name for a specific process.

The alternative to vn_fullpath() is intercepting calls, however I need an
interpreter name in case of a script.

The problem with name cache is:
a. name has to be in the cache
b. hardlinks cause vnodes with multiple names

This must be a common problem so I was curious whether there is a solution.

If anyone has any experience making this work, please advise.

Thank you,

Igor.