From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: angry rectangle Newsgroups: gmane.lisp.guile.bugs Subject: bug#55344: ftw thinks readable directories are unreadable if "other" don't have read permission Date: Tue, 17 May 2022 12:03:34 -0400 Message-ID: <87czgcxhvs.fsf@cock.li> References: <19f83bff-144b-f25a-db27-d8f48580897c@nixnet.email> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="38680"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: mu4e 1.6.10; emacs 29.0.50 To: 55344@debbugs.gnu.org Original-X-From: bug-guile-bounces+guile-bugs=m.gmane-mx.org@gnu.org Tue May 17 18:20:12 2022 Return-path: Envelope-to: guile-bugs@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 1nqzvc-0009kf-2K for guile-bugs@m.gmane-mx.org; Tue, 17 May 2022 18:20:12 +0200 Original-Received: from localhost ([::1]:51764 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nqzva-0008GQ-NP for guile-bugs@m.gmane-mx.org; Tue, 17 May 2022 12:20:06 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:53146) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nqzju-0007eY-Qi for bug-guile@gnu.org; Tue, 17 May 2022 12:08:03 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:35597) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1nqzju-0008EG-Hy for bug-guile@gnu.org; Tue, 17 May 2022 12:08:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1nqzju-0000xl-B0 for bug-guile@gnu.org; Tue, 17 May 2022 12:08:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: angry rectangle Original-Sender: "Debbugs-submit" Resent-CC: bug-guile@gnu.org Resent-Date: Tue, 17 May 2022 16:08:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 55344 X-GNU-PR-Package: guile X-Debbugs-Original-To: bug-guile@gnu.org Original-Received: via spool by submit@debbugs.gnu.org id=B.16528036543661 (code B ref -1); Tue, 17 May 2022 16:08:02 +0000 Original-Received: (at submit) by debbugs.gnu.org; 17 May 2022 16:07:34 +0000 Original-Received: from localhost ([127.0.0.1]:57727 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1nqzjR-0000wz-Uz for submit@debbugs.gnu.org; Tue, 17 May 2022 12:07:34 -0400 Original-Received: from lists.gnu.org ([209.51.188.17]:57830) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1nqzjQ-0000wq-Nm for submit@debbugs.gnu.org; Tue, 17 May 2022 12:07:32 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:53060) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nqzjP-0007Vb-8t for bug-guile@gnu.org; Tue, 17 May 2022 12:07:31 -0400 Original-Received: from [37.120.193.124] (port=36722 helo=mail.cock.li) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nqzjN-0008Bp-3W for bug-guile@gnu.org; Tue, 17 May 2022 12:07:30 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cock.li; s=mail; t=1652803644; bh=c6vyn1Er9Jx2Yex7BnQNXHdslBO4Fpwplm+EOyXPgyc=; h=From:To:Subject:In-Reply-To:Date:From; b=Q69La8HK/U3CXqnUaRNHhtNg3mnwbd7PUlZt90GDfxnhQnH//lzPnP64HRdNx8ueX VJO+CdyCljhu5doDxG7oNBelKRmlEuFwvEHZsYnXu4Hc2jHCi4/VKq22S+8VIDYQ2c X+xOGhciMS68SddinluKnePo6LDg3Tasm8ohL1nZCw19qIHhtuBN7X869TC9bF9p/M TyRIQhxxqRi0cTaV4dJDxSIvK7xv9M/pKsmw5BmCL081IzHT4O9fJScVBwh4Job/+C A73SMqK7XxLjf5yTxnoGJc7b0UenH1FdwQamFSqBP4IyKlBQxMxEKaKzidMjBEySr3 M73AJ6ftt1Qvw== In-Reply-To: 19f83bff-144b-f25a-db27-d8f48580897c@nixnet.email X-Host-Lookup-Failed: Reverse DNS lookup failed for 37.120.193.124 (failed) Received-SPF: pass client-ip=37.120.193.124; envelope-from=angryrectangle@cock.li; helo=mail.cock.li X-Spam_score_int: -12 X-Spam_score: -1.3 X-Spam_bar: - X-Spam_report: (-1.3 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RDNS_NONE=0.793, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-guile@gnu.org List-Id: "Bug reports for GUILE, GNU's Ubiquitous Extension Language" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-guile-bounces+guile-bugs=m.gmane-mx.org@gnu.org Original-Sender: "bug-guile" Xref: news.gmane.io gmane.lisp.guile.bugs:10281 Archived-At: (hmm... resending this because it didnt work. hopefully i'm doing it right this time.) It looks like guile's compiler and optimizer could be replacing the `getuid' and `setuid' calls with constant, compile-time values. Here is a test I performed: 1. Make directory with 770 owned by root and the `guixbuild' group. When guile is compiled with guix, I think the process is done under one of the guixbuilder users who have the `guixbuild' group. 2. Run guile under my regular user. 3. Try to `ftw' that directory. ftw detects it as a readable directory and then ends up throwing a "permission denied" error because it's not actually readable. If I compile guile manually under my regular user and try ftw on a different user, I observe the results that support my conclusion. System info: Guile 3.0.8.13-cc455 guix on amd64