Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Subscribe: <mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive: <http://sources.redhat.com/ml/cygwin/>
List-Post: <mailto:cygwin AT cygwin DOT com>
List-Help: <mailto:cygwin-help AT cygwin DOT com>, <http://sources.redhat.com/ml/#faqs>
Sender: cygwin-owner AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
Delivered-To: mailing list cygwin AT cygwin DOT com
To: cygwin AT cygwin DOT com
X-Injected-Via-Gmane: http://gmane.org/
Path: not-for-mail
From: Joe Buehler <jbuehler AT hekimian DOT com>
Newsgroups: gmane.os.cygwin
Subject: suspicious code in dtable::dup2
Date: Mon, 24 Jun 2002 15:12:08 -0400
Lines: 6
Message-ID: <3D176F08.6060800@hekimian.com>
NNTP-Posting-Host: hekimian.com
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii; format=flowed
Content-Transfer-Encoding: 7bit
X-Trace: main.gmane.org 1024945911 10179 206.205.138.10 (24 Jun 2002 19:11:51 GMT)
X-Complaints-To: usenet AT main DOT gmane DOT org
NNTP-Posting-Date: Mon, 24 Jun 2002 19:11:51 +0000 (UTC)
User-Agent: Mozilla/5.0 (Windows; U; WinNT4.0; en-US; rv:1.0.0) Gecko/20020530
X-Accept-Language: en-us, en

Looking at dtable::dup2 in dtable.cc, it appears that it is possible
to lock the fd list resource then exit the function without
unlocking it.  Which presumably could cause a hang sometime later.

Joe Buehler




--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Bug reporting:         http://cygwin.com/bugs.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/