From owner-freebsd-hackers@FreeBSD.ORG  Wed Sep 20 15:29:32 2006
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 [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id E73A716A403
	for <freebsd-hackers@freebsd.org>; Wed, 20 Sep 2006 15:29:32 +0000 (UTC)
	(envelope-from gortaur@gmail.com)
Received: from nz-out-0102.google.com (nz-out-0102.google.com [64.233.162.200])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 602EF43D6E
	for <freebsd-hackers@freebsd.org>; Wed, 20 Sep 2006 15:29:30 +0000 (GMT)
	(envelope-from gortaur@gmail.com)
Received: by nz-out-0102.google.com with SMTP id 13so139948nzn
	for <freebsd-hackers@freebsd.org>; Wed, 20 Sep 2006 08:29:29 -0700 (PDT)
DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com;
	h=received:message-id:date:from:to:subject:mime-version:content-type:content-transfer-encoding:content-disposition;
	b=BFCHfXvRC2aZBEUu0IO6kpYR2cxzG+ogD5VZOYYG3RIxeyxAtznv8HcwbmNBqHRdGlYAAJiystZW8C7Uld6RnpOqKSUTf2R6ej/SkbjDbXiBYxDvHgkiFgX0OecGlm2mThI/JnMOjYPACi6YFwHY4QB0lqkDf+VoUVhmMnJLuoQ=
Received: by 10.65.121.9 with SMTP id y9mr16678160qbm;
	Wed, 20 Sep 2006 08:29:29 -0700 (PDT)
Received: by 10.65.231.16 with HTTP; Wed, 20 Sep 2006 08:29:29 -0700 (PDT)
Message-ID: <89b086450609200829t2ef4dd9ft13c2051644101ba8@mail.gmail.com>
Date: Wed, 20 Sep 2006 18:29:29 +0300
From: "Taras Danko" <gortaur@gmail.com>
To: freebsd-hackers@freebsd.org
MIME-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
Subject: How to find a certain socket?
X-BeenThere: freebsd-hackers@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
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, 20 Sep 2006 15:29:33 -0000

Hi.
I need to find and close a certain socket from kernel module. My
current implementation iterates over the "allproc" list  and checks
every process'  file descriptors list  to find needed socket. But
maybe there is an easier way to do this? Some nixes have "inpcbtable"
which holds all the open sockets on the system. Is there anything
similar in FreeBSD?

And the second question: whats the correct way to close the socket
which was found?
My implementation:

 .....
mysocket = myproc->p_fd->fd_ofiles[i]->f_data;
myproc->p_fd->fd_ofiles[i]->f_data = NULL;
myproc->p_fd->fd_ofiles[i]->f_ops = &badfileops;
soclose(mysocket);
 .....

The socket closes but it causes a kernel panic in 90% of cases and
file descriptor doesnt actualy released (as fstat shows), but is
marked as "error" (because of "badfileops" I suppose). Maybe I should
acqure some mutex lock or something before starting manipulations with
socket? Any exampe code will be very much appreciated.

Its my first steps in fbsd kernel programming so please xcuse me for
newbie questions.

Taras Danko.
- - - - - - - - - - - - - - - - - - - - - -
contact me:
email: gortaur@gmail.com
icq:     166956956