From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Andrea Corallo Newsgroups: gmane.emacs.devel Subject: Re: Finalizing 'inhibit-automatic-native-compilation' Date: Mon, 20 Feb 2023 20:22:02 +0000 Message-ID: References: <20230218.061335.1468428093197134401.tats%nobody@tats.iris.ne.jp> <837cwcwnpf.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="29511"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) Cc: Eli Zaretskii , tats@debian.org, emacs-devel@gnu.org, spwhitton@spwhitton.name, 1021842@bugs.debian.org To: Stefan Monnier Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Mon Feb 20 21:23:12 2023 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 1pUCgp-0007QW-Km for ged-emacs-devel@m.gmane-mx.org; Mon, 20 Feb 2023 21:23:11 +0100 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pUCg0-00086N-4W; Mon, 20 Feb 2023 15:22:20 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pUCfp-00085s-9o for emacs-devel@gnu.org; Mon, 20 Feb 2023 15:22:10 -0500 Original-Received: from ma.sdf.org ([205.166.94.33]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pUCfn-0006il-Lo; Mon, 20 Feb 2023 15:22:09 -0500 Original-Received: from akrl by ma.sdf.org with local (Exim 4.92) (envelope-from ) id 1pUCfi-0000Wp-Tt; Mon, 20 Feb 2023 20:22:02 +0000 In-Reply-To: (Stefan Monnier's message of "Mon, 20 Feb 2023 11:02:09 -0500") Received-SPF: pass client-ip=205.166.94.33; envelope-from=akrl@sdf.org; helo=ma.sdf.org X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, 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-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.devel:303621 Archived-At: Stefan Monnier writes: >> Before e6043641d30 the file was created by Fmake_temp_file_internal and >> afterwards overwritten by libgccjit. > > Yes, that was good. > >> So I guess one could remove the file after the first creation and make >> it a link pointing to some other file waiting for libgccjit to do >> its write. > > "One" as in "an attacker"? In `/tmp` an attacker should not be able to > do that because it's supposed to be using the sticky bit so that only > the owner of a file can remove it. Finally understood thanks! I've installed 5d0b45cd67b on emacs-29 in order to use always `make-temp-file'. I think at the time I preferred Fmake_temp_file_internal not to call into Lisp for some reason I can't remember now, anyway seems to work now for me (just bootstrapped successfully). Andrea