From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Vincent Lefevre Newsgroups: gmane.emacs.bugs Subject: bug#32413: 25.2; When run as root, emacs writes dconf files in a non-root user's /run/user/XXX directory Date: Fri, 10 Aug 2018 16:32:03 +0200 Message-ID: <20180810143203.GE12819@zira.vinc17.org> References: <87k1oyy3fi.fsf@zira.vinc17.org> <83600io1pl.fsf@gnu.org> <20180810125758.GD12819@zira.vinc17.org> <83va8imize.fsf@gnu.org> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Trace: blaine.gmane.org 1533911475 21306 195.159.176.226 (10 Aug 2018 14:31:15 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Fri, 10 Aug 2018 14:31:15 +0000 (UTC) User-Agent: Mutt/1.10.1+58 (10c1ac4b) vl-108074 (2018-07-29) Cc: 32413@debbugs.gnu.org To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Fri Aug 10 16:31:11 2018 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1fo8Ra-0005TF-Vp for geb-bug-gnu-emacs@m.gmane.org; Fri, 10 Aug 2018 16:31:11 +0200 Original-Received: from localhost ([::1]:56539 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fo8Th-0002rI-Hc for geb-bug-gnu-emacs@m.gmane.org; Fri, 10 Aug 2018 10:33:21 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:45496) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fo8TU-0002qL-Ik for bug-gnu-emacs@gnu.org; Fri, 10 Aug 2018 10:33:10 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fo8TQ-0000rc-LV for bug-gnu-emacs@gnu.org; Fri, 10 Aug 2018 10:33:08 -0400 Original-Received: from debbugs.gnu.org ([208.118.235.43]:42021) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1fo8TQ-0000rF-Gg for bug-gnu-emacs@gnu.org; Fri, 10 Aug 2018 10:33:04 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1fo8TO-0003ba-Hf for bug-gnu-emacs@gnu.org; Fri, 10 Aug 2018 10:33:04 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Vincent Lefevre Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Fri, 10 Aug 2018 14:33:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 32413 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 32413-submit@debbugs.gnu.org id=B32413.153391152613775 (code B ref 32413); Fri, 10 Aug 2018 14:33:02 +0000 Original-Received: (at 32413) by debbugs.gnu.org; 10 Aug 2018 14:32:06 +0000 Original-Received: from localhost ([127.0.0.1]:47039 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1fo8ST-0003a7-Vt for submit@debbugs.gnu.org; Fri, 10 Aug 2018 10:32:06 -0400 Original-Received: from joooj.vinc17.net ([155.133.131.76]:43756) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1fo8SS-0003Zz-G3 for 32413@debbugs.gnu.org; Fri, 10 Aug 2018 10:32:04 -0400 Original-Received: from smtp-zira.vinc17.net (unknown [37.168.145.214]) by joooj.vinc17.net (Postfix) with ESMTPSA id C86EF24F; Fri, 10 Aug 2018 16:32:03 +0200 (CEST) Original-Received: by zira.vinc17.org (Postfix, from userid 1000) id 4DC71C200CD; Fri, 10 Aug 2018 16:32:03 +0200 (CEST) Content-Disposition: inline In-Reply-To: <83va8imize.fsf@gnu.org> X-Mailer-Info: https://www.vinc17.net/mutt/ X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 208.118.235.43 X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.org gmane.emacs.bugs:149414 Archived-At: On 2018-08-10 16:47:17 +0300, Eli Zaretskii wrote: > That was just an example of something that doesn't explicitly ask for > writing a file. Another example is Eshell: when it exits, it writes > files in the ~/.eshell directory. If you mean that it writes the history, then that's a usual shell thing, so that's OK. BTW, that's probably one of the reasons why "su" redefines HOME to the target user home directory by default. I suppose that caches could be OK too as long as they are written in a "safe" place. > More generally, certain Emacs features might write files "without user > explicitly asking" as part of providing some feature that needs to be > persistent between sessions. I think that's quite allright, which is > why I disagree with the general principle you were trying to > establish. Perhaps. But, for instance, writing a default .emacs would not be OK and would require at least user confirmation. > > And if the user introduces some customization, then this can be > > regarded as an explicit write operation (due to the action of the > > user in this sense). > > Well, in that case, let's regard user using dconf as an explicit write > permission ;-) > > Seriously, though: if your principle can be subverted in some > situations, then we need to define what situations are those. In > particular, how is what you report different from what Eshell does on > exit? So, perhaps this should be on a case by case basis. I don't know about dconf, but in that case, this doesn't seem to be correct. And if not writing under $HOME, I think that the owner of the directory should be checked in some cases. -- Vincent Lefèvre - Web: 100% accessible validated (X)HTML - Blog: Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)