From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1160998AbWGUFeL (ORCPT ); Fri, 21 Jul 2006 01:34:11 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1161003AbWGUFeL (ORCPT ); Fri, 21 Jul 2006 01:34:11 -0400 Received: from ug-out-1314.google.com ([66.249.92.175]:23402 "EHLO ug-out-1314.google.com") by vger.kernel.org with ESMTP id S1160999AbWGUFeK (ORCPT ); Fri, 21 Jul 2006 01:34:10 -0400 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=DqIGPuUMtBwHB173aUMbssWaLkRBNmIftEl25rK2PB2bw72Od5xDuRG7pwhtYiBM4+2wC0i4DDYDOQKIrJo9ItGW3d0LADF3q+uMvRrcWPJ0RhsKVCX2r3b6CWo422AhroB8SEfDxlVgo90VsOxLhiO3gm0RGB0p5ra7jKBe++g= Message-ID: Date: Thu, 20 Jul 2006 22:34:08 -0700 From: "Joshua Hudson" To: "Irfan Habib" , linux-kernel@vger.kernel.org Subject: Re: why is intercepting system calls considerred bad? In-Reply-To: <3420082f0607202206j78569b3fm56d61138c65426bf@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <3420082f0607202206j78569b3fm56d61138c65426bf@mail.gmail.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On 7/20/06, Irfan Habib wrote: > HI, > > I recently met a kernel janitor, who told me that intercepting system > calls is undesirable, why? I'll bite. You intercept. Somebody else intercepts. You want to stop intercepting. For this reason, anybody who intercepts a system call must be compiled in, and if two intercept the same system call, than the link order dictates behavior. Obviously not desirable.