From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261950AbUL0TjK (ORCPT ); Mon, 27 Dec 2004 14:39:10 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261952AbUL0TjK (ORCPT ); Mon, 27 Dec 2004 14:39:10 -0500 Received: from salazar.rnl.ist.utl.pt ([193.136.164.251]:65492 "EHLO admin.rnl.ist.utl.pt") by vger.kernel.org with ESMTP id S261950AbUL0TjF (ORCPT ); Mon, 27 Dec 2004 14:39:05 -0500 Message-ID: <41D064D5.1030900@rnl.ist.utl.pt> Date: Mon, 27 Dec 2004 19:39:01 +0000 From: "Pedro Venda (SYSADM)" User-Agent: Mozilla Thunderbird 0.9 (Windows/20041103) X-Accept-Language: en-us, en MIME-Version: 1.0 To: linux-kernel@vger.kernel.org Subject: [RFC] pid randomness Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org hi everyone, I don't know if this has been discussed before... but I'd like to ask why isn't the pids randomized by default? I mean, of course it's not required for normal functioning but it'd be nice to have a Kconfig option to make it happen. The (newbie) way I see it, it'd not be hard to do... generate pid, check if it's unique, give pid to process. It could bring some minor security enhancements while taking a slight performance hit (seek & compare algorithm for used pids). What are the pros and cons of this? What are your oppinions on this subjet? regards, pedro venda. -- Pedro João Lopes Venda email: pjvenda@rnl.ist.utl.pt http://maxwell.rnl.ist.utl.pt Equipa de Administração de Sistemas Rede das Novas Licenciaturas (RNL) Instituto Superior Técnico http://www.rnl.ist.utl.pt http://mega.ist.utl.pt