Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751855AbWLNA2g (ORCPT ); Wed, 13 Dec 2006 19:28:36 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751854AbWLNA2f (ORCPT ); Wed, 13 Dec 2006 19:28:35 -0500 Received: from mail.lmcg.wisc.edu ([144.92.101.145]:50815 "EHLO mail.lmcg.wisc.edu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751855AbWLNA2f (ORCPT ); Wed, 13 Dec 2006 19:28:35 -0500 X-Greylist: delayed 1231 seconds by postgrey-1.27 at vger.kernel.org; Wed, 13 Dec 2006 19:28:35 EST Date: Wed, 13 Dec 2006 18:08:01 -0600 From: Daniel Forrest To: linux-kernel@vger.kernel.org Subject: Processes with hidden PID files in /proc Message-ID: <20061213180801.A16952@yoda.lmcg.wisc.edu> Reply-To: Daniel Forrest Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 974 Lines: 25 Hopefully someone can give me a quick answer... Yesterday I discovered some processes that had a PPID which was not shown as a running process by "ps". Also an "ls /proc" did not show that PPID. I've Googled on this enough to find out that these are Linux threads, that "ps -m" will show them, that "ls -a /proc" will show /proc/.PPID, etc, but I'm still wondering what exact sequence of system calls will create a process like this? I'm trying to file a bug report for another piece of software and I would like to make a simple test program that shows this situation. Thanks, -- Daniel K. Forrest Laboratory for Molecular and forrest@lmcg.wisc.edu Computational Genomics (608) 262 - 9479 University of Wisconsin, Madison - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/