Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261339AbVDQPyo (ORCPT ); Sun, 17 Apr 2005 11:54:44 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261338AbVDQPyn (ORCPT ); Sun, 17 Apr 2005 11:54:43 -0400 Received: from wproxy.gmail.com ([64.233.184.198]:29485 "EHLO wproxy.gmail.com") by vger.kernel.org with ESMTP id S261339AbVDQPyh convert rfc822-to-8bit (ORCPT ); Sun, 17 Apr 2005 11:54:37 -0400 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:reply-to:to:subject:mime-version:content-type:content-transfer-encoding:content-disposition; b=GOLilCD2PNXz2HBaYaZ+8pZfKQa7tp/ijew6bJ/SORjIXYZJwV8tgI2kuwms7ONsxKvJvmnbzuRZM/TmuZfqgrsq5dCOqz5wD1MNV5/Y5MeFAwDLa1UZP0qLF1tAVSut5SJZl9JIhiBhkZQZuriO2h3vT1t3N86rDouDEXnkjMU= Message-ID: <4ae3c14050417085473bd365f@mail.gmail.com> Date: Sun, 17 Apr 2005 11:54:34 -0400 From: Xin Zhao Reply-To: Xin Zhao To: linux-kernel@vger.kernel.org Subject: Why Ext2/3 needs immutable attribute? Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 495 Lines: 10 Why not simply unset the write bit for all three groups of users? That seems to be enough to prevent file modification. Immutable seems to only add one more protection level in case of misconfiguration on standard access right bits. Is that right? - 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/