From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: Suppressing native compilation (short and long term) Date: Fri, 30 Sep 2022 11:38:15 -0400 Message-ID: References: <87bkqxf1ij.fsf@tethera.net> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="4872"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) Cc: eliz@gnu.org, emacs-devel@gnu.org, akrl@sdf.org, rlb@defaultvalue.org To: David Bremner Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Fri Sep 30 17:41:32 2022 Return-path: Envelope-to: ged-emacs-devel@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1oeI8p-00012d-Da for ged-emacs-devel@m.gmane-mx.org; Fri, 30 Sep 2022 17:41:31 +0200 Original-Received: from localhost ([::1]:43532 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oeI8l-0001sr-84 for ged-emacs-devel@m.gmane-mx.org; Fri, 30 Sep 2022 11:41:28 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:58224) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oeI5p-00005k-LD for emacs-devel@gnu.org; Fri, 30 Sep 2022 11:38:36 -0400 Original-Received: from mailscanner.iro.umontreal.ca ([132.204.25.50]:55470) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oeI5n-00021U-1P; Fri, 30 Sep 2022 11:38:24 -0400 Original-Received: from pmg1.iro.umontreal.ca (localhost.localdomain [127.0.0.1]) by pmg1.iro.umontreal.ca (Proxmox) with ESMTP id ECC0E10011D; Fri, 30 Sep 2022 11:38:17 -0400 (EDT) Original-Received: from mail01.iro.umontreal.ca (unknown [172.31.2.1]) by pmg1.iro.umontreal.ca (Proxmox) with ESMTP id 640EB1000D1; Fri, 30 Sep 2022 11:38:16 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=iro.umontreal.ca; s=mail; t=1664552296; bh=qX0pM+tBUeRHAL8x5RfzKnZgAHRzEPAELAtm+9uqUAk=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=UpzIjWsGEQjn8IgWMlDzaTDZmue8a1Y+WLp+JrmuNhonadQHB83qJMD43d8iSwqBf eU0WYgTdYEWC3uuknkRstv8BkWVQ5IKEe2czPIn28ZGZw8dMMqjDqtfwi0OtaTc2Zt TTAs9HTp0Y6wpxhSuZUiIUooq7orPKsNnC6YUIGM315BQ1dha/gvZIeSk4DGKm9X9F lG0sACC7COTh3a38bwgLzX7KohA0V5/NMlCDOouw94AejRtO1wZ0tUeXC6dieqMvT0 waZQVEw0OoT7LFNOV7NS0DfKdlQmrt3dDjn3Uigqox5XTtK1T3Rj1LhU8rY1QvsvkX SMKF1EEWPsoZw== Original-Received: from pastel (65-110-220-202.cpe.pppoe.ca [65.110.220.202]) by mail01.iro.umontreal.ca (Postfix) with ESMTPSA id 30C761203F3; Fri, 30 Sep 2022 11:38:16 -0400 (EDT) In-Reply-To: <87bkqxf1ij.fsf@tethera.net> (David Bremner's message of "Fri, 30 Sep 2022 10:13:56 -0300") Received-SPF: pass client-ip=132.204.25.50; envelope-from=monnier@iro.umontreal.ca; helo=mailscanner.iro.umontreal.ca X-Spam_score_int: -42 X-Spam_score: -4.3 X-Spam_bar: ---- X-Spam_report: (-4.3 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.io gmane.emacs.devel:296521 Archived-At: David Bremner [2022-09-30 10:13:56] wrote: > I think just turning off native compilation when HOME is not writeable > would be sensible from a Debian point of view. Emacs did not previously That's not the problem: the problem is when $HOME is writable but doesn't belong to the user (e.g. because the user is root): then Emacs ends up writing files (and creating directories) which then end up being "unwritable" by the owner of $HOME. IIUC this happens very "naturally" with `su` followed by running Emacs, because many version of `su` (contrary to `su -`) preserve the $LOGNAME and Emacs uses ~$LOGNAME as "the HOME" (instead of $HOME) when run as root. Stefan