From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Robert Pluim Newsgroups: gmane.emacs.bugs Subject: bug#37884: 27.0.50; Cannot write to a file in VirtualBox shared directory Date: Thu, 31 Oct 2019 08:38:59 +0100 Message-ID: References: <87h83zeoy1.fsf@pobox.com> <87blu2emi3.fsf@pobox.com> <83lft6rxrs.fsf@gnu.org> <874kztdy0l.fsf@pobox.com> <87zhhkc4vs.fsf@pobox.com> <87sgnad3m4.fsf@pobox.com> <831ruup5dw.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="61690"; mail-complaints-to="usenet@blaine.gmane.org" Cc: eggert@cs.ucla.edu, bernardo.bacic@pobox.com To: 37884@debbugs.gnu.org Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Thu Oct 31 08:40:15 2019 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1iQ540-000FsV-8n for geb-bug-gnu-emacs@m.gmane.org; Thu, 31 Oct 2019 08:40:12 +0100 Original-Received: from localhost ([::1]:47246 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iQ53y-0002GW-Mi for geb-bug-gnu-emacs@m.gmane.org; Thu, 31 Oct 2019 03:40:10 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:51526) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iQ53r-0002FH-CM for bug-gnu-emacs@gnu.org; Thu, 31 Oct 2019 03:40:04 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iQ53q-0006rG-F0 for bug-gnu-emacs@gnu.org; Thu, 31 Oct 2019 03:40:03 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:43255) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1iQ53q-0006pk-8k for bug-gnu-emacs@gnu.org; Thu, 31 Oct 2019 03:40:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1iQ53q-0006Fk-2P for bug-gnu-emacs@gnu.org; Thu, 31 Oct 2019 03:40:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Robert Pluim Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Thu, 31 Oct 2019 07:40:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 37884 X-GNU-PR-Package: emacs Original-Received: via spool by 37884-submit@debbugs.gnu.org id=B37884.157250755023972 (code B ref 37884); Thu, 31 Oct 2019 07:40:02 +0000 Original-Received: (at 37884) by debbugs.gnu.org; 31 Oct 2019 07:39:10 +0000 Original-Received: from localhost ([127.0.0.1]:52076 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1iQ530-0006Ea-Gt for submit@debbugs.gnu.org; Thu, 31 Oct 2019 03:39:10 -0400 Original-Received: from mail-wm1-f42.google.com ([209.85.128.42]:36390) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1iQ52x-0006EJ-Lb for 37884@debbugs.gnu.org; Thu, 31 Oct 2019 03:39:08 -0400 Original-Received: by mail-wm1-f42.google.com with SMTP id c22so4786183wmd.1 for <37884@debbugs.gnu.org>; Thu, 31 Oct 2019 00:39:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:references:mail-copies-to:gmane-reply-to-list :date:in-reply-to:message-id:mime-version:content-transfer-encoding; bh=bY7zU1wEZj7Kej3Kp96lK15KsQ0DOEk5LYxw7a/LyLE=; b=SYk2g+JOj/DmYm8OMv7z+54ZIBph8w6K2lhnSSfhTSbGZiATQpWnOVHlT8yIDCdbp9 5tmr4+zhpvoIs+mgZ3Xf/gcXjqc6Z0Id6R6sAAydgyjb70Tp24dpcShj7gVdnZj7ecbD aYYBIfZwFG3IRazspFDZaCXchFq9PnW+XKtA/xDDYJtobwPd5+LoQdQhWVr4ejGCk3iy j/TMlRJA7CIsh9ZY8/DQ0HtQRfY3xzk3KsHQoAdmtxBx5j0lv+/D6aQu6EUZT4xPdFQj dg+tiS8CPDFm91HpUWkX0e6ZrfGoUy12zBE2T8UVRaadjNNGqkOU5gm59Sl3DrE2BgLC uNQg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:references:mail-copies-to :gmane-reply-to-list:date:in-reply-to:message-id:mime-version :content-transfer-encoding; bh=bY7zU1wEZj7Kej3Kp96lK15KsQ0DOEk5LYxw7a/LyLE=; b=SFmomRunl2Ex0unxG4pRKCZxvyt4BUBiK14009vbouc+v03B8EEIoXJxLPtfJyh/nq 0n0nqAR4VOSxDHvKYHVVy4nS/InC4i4LHnGJlrh1gWLS/8nysQq9O+uowvnH3kagOSZc WeBM0JtzEBN9xHZ6cyJ2Dn01wsmeanWBoC43AGtzZspPdn9EJJBldEnBEYEWELk1C4vY Gd87rQJVQMKKZ+k9mXsfWqA7zRg22YkePDkjKb4cC8slWObpWfGiYU8VDhQgW9iHHoYW schBSo1Z86kap2Mkqyc8Q999kXLdTOrFzyVC75wmkfQkIlEM0D0ttmM0QMefPDUiHbOK ZYJA== X-Gm-Message-State: APjAAAX5npDmZc/MhSlrZRPP1+WrgTcqwHXYZxHymu+Zktnmnp7KJwIg HUPg3qL/n3+N57JmdUJRjGs= X-Google-Smtp-Source: APXvYqxiCvxJe6OcYkdSUl0c4yS5Zu3D3NiBbs8wIu3jHNm7dD2tmtcVeVPNyNHczasPmuRVHRRONg== X-Received: by 2002:a1c:3d08:: with SMTP id k8mr3441626wma.119.1572507541470; Thu, 31 Oct 2019 00:39:01 -0700 (PDT) Original-Received: from rpluim-mac ([2a01:e34:ecfc:a860:10a:f31e:f8db:2aab]) by smtp.gmail.com with ESMTPSA id t16sm3094395wrq.52.2019.10.31.00.38.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 31 Oct 2019 00:39:00 -0700 (PDT) Mail-Copies-To: never Gmane-Reply-To-List: yes In-Reply-To: (Paul Eggert's message of "Wed, 30 Oct 2019 18:41:10 -0700") 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: 209.51.188.43 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:170500 Archived-At: >>>>> On Wed, 30 Oct 2019 18:41:10 -0700, Paul Eggert = said: Paul> On 10/30/19 9:25 AM, Eli Zaretskii wrote: >> Paul, do you >> see any downsides to the last change posted in this discussion? IOW, >> could there be some situations where it could do any harm? Paul> That change involves two extra system calls (one of which doesn't Paul> check the return value?!). I don=CA=BCt know what value there would be in checking the return value of chmod, given that we=CA=BCre already in an error situation. Paul> In contrast, Bernardo's suggestion is Paul> simpler, involves no extra system calls (or machine instructions,= for Paul> that matter), and has been tested. So I installed the attached pa= tch Paul> to implement and document the workaround, and am optimistically Paul> closing the bug report. Looks good to me. I was trying to avoid that, since I thought there was a strong desire to keep the file read-only, otherwise why bother with the fchmod in the first place? Robert