Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 4 Oct 2001 12:11:21 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 4 Oct 2001 12:11:11 -0400 Received: from leibniz.math.psu.edu ([146.186.130.2]:61064 "EHLO math.psu.edu") by vger.kernel.org with ESMTP id ; Thu, 4 Oct 2001 12:11:06 -0400 Date: Thu, 4 Oct 2001 12:11:34 -0400 (EDT) From: Alexander Viro To: Linus Torvalds cc: "Eric W. Biederman" , linux-kernel@vger.kernel.org Subject: Re: Security question: "Text file busy" overwriting executables but not shared libraries? In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 4 Oct 2001, Linus Torvalds wrote: > In short, now you need filesystem versioning at a per-page level etc. *ding* *ding* *ding* we have a near winner. Remember, folks, Hurd had been started by people who not only don't understand UNIX, but detest it. ITS/TWENEX refugees. And semantics in question comes from there - they had "open and make sure that anyone who tries to modify will get a new version, leaving one we'd opened unchanged". > Trust me. The people who came up with MAP_COPY were stupid. Really. It's > an idiotic concept, and it's not worth implementing. Well, actually that's a concept that made sense on system we got mmap from[1] They just want infection to be complete. [1] cue Tom Lehrer singing "I got it from Agnes, she got it from Jim" - 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/