Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261714AbVDWTLQ (ORCPT ); Sat, 23 Apr 2005 15:11:16 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261720AbVDWTLP (ORCPT ); Sat, 23 Apr 2005 15:11:15 -0400 Received: from ns9.hostinglmi.net ([213.194.149.146]:32223 "EHLO ns9.hostinglmi.net") by vger.kernel.org with ESMTP id S261714AbVDWTLH (ORCPT ); Sat, 23 Apr 2005 15:11:07 -0400 Date: Sat, 23 Apr 2005 21:12:13 +0200 From: DervishD To: Kyle Moffett Cc: dean gaudet , Xin Zhao , linux-kernel@vger.kernel.org Subject: Re: Why Ext2/3 needs immutable attribute? Message-ID: <20050423191213.GA505@DervishD> Mail-Followup-To: Kyle Moffett , dean gaudet , Xin Zhao , linux-kernel@vger.kernel.org References: <4ae3c14050417085473bd365f@mail.gmail.com> <4a5cc1ac18788e708f9a5f3a5bd31be0@mac.com> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <4a5cc1ac18788e708f9a5f3a5bd31be0@mac.com> User-Agent: Mutt/1.4.2.1i Organization: DervishD X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - ns9.hostinglmi.net X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [0 0] / [47 12] X-AntiAbuse: Sender Address Domain - dervishd.net X-Source: X-Source-Args: X-Source-Dir: Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1524 Lines: 33 Hi Kyle :) * Kyle Moffett dixit: > >another usage: if you "chattr +i /var" while /var is unmounted, > >then root is unlikely to accidentally create files/dirs in /var -- > >and when you mount the real /var on top it works fine. i tend to > >protect all my mount points this way (especially those in /mnt) to > >avoid my own dumb mistakes. > If you chmod 000 /var beforehand (While it's still unmounted, of > course), then it's also blindingly obvious that it's not mounted in > an ls -l :-D. I too have used this trick on many/most of my > systems. I was doing exactly that, but it has its drawbacks: root still can create files by accident. I've been hit by this a couple of times :( For example, as root, I issue the mount command with a typo, and before I can read the result of the command I've already typed a 'cp' or 'mv' command, 'sync' and 'umount'. Yes, I know, I should read carefully what I type as root and the result of the commands, and I do except when issuing harmless commands as 'cp' O:))) My fault, yes, but it can be solved easily with the trick provided by Dean ;) Ra?l N??ez de Arenas Coronado -- Linux Registered User 88736 http://www.dervishd.net & http://www.pleyades.net/ It's my PC and I'll cry if I want to... - 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/