From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mp0 ([2001:41d0:2:4a6f::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by ms11 with LMTPS id tHYrLfp5mF/9SQAA0tVLHw (envelope-from ) for ; Tue, 27 Oct 2020 19:50:18 +0000 Received: from aspmx1.migadu.com ([2001:41d0:2:4a6f::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by mp0 with LMTPS id WChwKPp5mF88bwAA1q6Kng (envelope-from ) for ; Tue, 27 Oct 2020 19:50:18 +0000 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by aspmx1.migadu.com (Postfix) with ESMTPS id 1805C94023B for ; Tue, 27 Oct 2020 19:50:18 +0000 (UTC) Received: from localhost ([::1]:51320 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kXUz1-0007NQ-PJ for larch@yhetil.org; Tue, 27 Oct 2020 15:50:15 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:52980) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kXUyn-0007Mb-VI for bug-guix@gnu.org; Tue, 27 Oct 2020 15:50:02 -0400 Received: from debbugs.gnu.org ([209.51.188.43]:34408) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1kXUyn-0007d9-KT for bug-guix@gnu.org; Tue, 27 Oct 2020 15:50:01 -0400 Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1kXUyn-0005wY-JS for bug-guix@gnu.org; Tue, 27 Oct 2020 15:50:01 -0400 X-Loop: help-debbugs@gnu.org Subject: bug#44261: running a daemon with userns in relocateble pack breaks Resent-From: Jan Nieuwenhuizen Original-Sender: "Debbugs-submit" Resent-CC: bug-guix@gnu.org Resent-Date: Tue, 27 Oct 2020 19:50:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: report 44261 X-GNU-PR-Package: guix X-GNU-PR-Keywords: To: 44261@debbugs.gnu.org X-Debbugs-Original-To: bug-guix@gnu.org Received: via spool by submit@debbugs.gnu.org id=B.160382816522794 (code B ref -1); Tue, 27 Oct 2020 19:50:01 +0000 Received: (at submit) by debbugs.gnu.org; 27 Oct 2020 19:49:25 +0000 Received: from localhost ([127.0.0.1]:45954 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1kXUyD-0005va-EM for submit@debbugs.gnu.org; Tue, 27 Oct 2020 15:49:25 -0400 Received: from lists.gnu.org ([209.51.188.17]:39034) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1kXUyC-0005vT-8M for submit@debbugs.gnu.org; Tue, 27 Oct 2020 15:49:24 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:52934) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kXUyB-0006uB-U4 for bug-guix@gnu.org; Tue, 27 Oct 2020 15:49:23 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]:57285) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kXUyB-0007ak-LW; Tue, 27 Oct 2020 15:49:23 -0400 Received: from [2001:980:1b4f:1:42d2:832d:bb59:862] (port=55424 helo=dundal.janneke.lilypond.org) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1kXUyB-000469-38; Tue, 27 Oct 2020 15:49:23 -0400 From: Jan Nieuwenhuizen Organization: AvatarAcademy.nl X-Url: http://AvatarAcademy.nl Date: Tue, 27 Oct 2020 20:49:19 +0100 Message-ID: <87blgn30w0.fsf@gnu.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.1 (gnu/linux) MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="=-=-=" X-Spam-Score: -2.3 (--) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-Spam-Score: -3.3 (---) X-BeenThere: bug-guix@gnu.org List-Id: Bug reports for GNU Guix List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-guix-bounces+larch=yhetil.org@gnu.org Sender: "bug-Guix" X-Scanner: scn0 Authentication-Results: aspmx1.migadu.com; dkim=none; dmarc=pass (policy=none) header.from=gnu.org; spf=pass (aspmx1.migadu.com: domain of bug-guix-bounces@gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=bug-guix-bounces@gnu.org X-Spam-Score: -1.51 X-TUID: mqYF2tBa2pij --=-=-= Content-Type: text/plain Hi! As mentioned on IRC, running a daemon from a guix relocatable pack on a foreign distro using the user namespace feature is troublesome: it looks as if the daemon "loses" (its view of) the file-system once the parent process that creates the daemon exits. I'm attatching a package description for a test package "vork". It builds a program "test" that forks the program "daemon". The daemon program reads a character from /dev/urandom, prints it, and sleeps for a second; 10 times. The "test" parent program exits after 5 seconds. When the parent program exits, the daemon crashes. To reproduce, put "vork.scm" in a fresh directory and do something like: --8<---------------cut here---------------start------------->8--- fakeroot tar xf $(GUIX_PACKAGE_PATH=. guix pack --relocatable\ --symlink=/gnu/bin=bin guile shepherd vork --no-offload) guix gc -D $(guix build -f vork.scm) touch /tmp/daemon.log tail -f /tmp/daemon.log & GUILE_LOAD_COMPILED_PATH=$PWD/$(ls -1d gnu/store/*profile)/lib/guile/3.0/ccache\ :$PWD/$(ls -1d gnu/store/*profile)/lib/guile/3.0/site-ccache gnu/bin/test --8<---------------cut here---------------end--------------->8--- this gives something like --8<---------------cut here---------------start------------->8--- .daemon-start daemon: 10 ? .daemon: 9 ? .daemon: 8 T .daemon: 7 ^O .daemon: 6 O exit 20:42:38 janneke@dundal:~/src/guix/master/vork [env] $ 20:42:38 janneke@dundal:~/src/guix/master/vork [env] $ Backtrace: Exception thrown while printing backtrace: In procedure public-lookup: Module named (system repl debug) does not exist --8<---------------cut here---------------end--------------->8--- Greetings, Janneke --=-=-= Content-Type: application/octet-stream Content-Disposition: attachment; filename=vork.scm Content-Transfer-Encoding: base64 KGRlZmluZS1tb2R1bGUgKHZvcmspCiAgIzp1c2UtbW9kdWxlIChndWl4IGxpY2Vuc2VzKQogICM6 dXNlLW1vZHVsZSAoZ3VpeCBidWlsZC1zeXN0ZW0gdHJpdmlhbCkKICAjOnVzZS1tb2R1bGUgKGd1 aXggcGFja2FnZXMpCiAgIzp1c2UtbW9kdWxlIChnbnUgcGFja2FnZXMgYWRtaW4pCiAgIzp1c2Ut bW9kdWxlIChnbnUgcGFja2FnZXMgZ3VpbGUpCiAgIzp1c2UtbW9kdWxlIChnbnUgcGFja2FnZXMg cGtnLWNvbmZpZykpCgooZGVmaW5lLXB1YmxpYyBzaGVwaGVyZC1ndWlsZS0zLjAtbGF0ZXN0CiAg KHBhY2thZ2UKICAgIChpbmhlcml0IHNoZXBoZXJkKQogICAgKG5hdGl2ZS1pbnB1dHMKICAgICBg KCgicGtnLWNvbmZpZyIgLHBrZy1jb25maWcpCiAgICAgICAoImd1aWxlIiAsZ3VpbGUtMy4wLWxh dGVzdCkpKQogICAgKGlucHV0cwogICAgIGAoKCJndWlsZSIgLGd1aWxlLTMuMC1sYXRlc3QpKSkp KQoKKGRlZmluZS1wdWJsaWMgdm9yawogIChwYWNrYWdlCiAgICAobmFtZSAidm9yayIpCiAgICAo dmVyc2lvbiAiMCIpCiAgICAoc291cmNlICNmKQogICAgKGJ1aWxkLXN5c3RlbSB0cml2aWFsLWJ1 aWxkLXN5c3RlbSkKICAgIChpbnB1dHMgYCgoImd1aWxlIiAsZ3VpbGUtMy4wLWxhdGVzdCkKICAg ICAgICAgICAgICAoInNoZXBoZXJkIiAsc2hlcGhlcmQtZ3VpbGUtMy4wLWxhdGVzdCkpKQogICAg KGFyZ3VtZW50cwogICAgIGAoIzpndWlsZSAsZ3VpbGUtMy4wLWxhdGVzdAogICAgICAgIzptb2R1 bGVzICgoaWNlLTkgcG9wZW4pCiAgICAgICAgICAgICAgICAgIChndWl4IGJ1aWxkIHV0aWxzKSkK ICAgICAgICM6YnVpbGRlcgogICAgICAgKGJlZ2luCiAgICAgICAgICh1c2UtbW9kdWxlcyAoaWNl LTkgcG9wZW4pCiAgICAgICAgICAgICAgICAgICAgICAoZ3VpeCBidWlsZCB1dGlscykpCiAgICAg ICAgIChsZXQqICgob3V0IChhc3NvYy1yZWYgJW91dHB1dHMgIm91dCIpKQogICAgICAgICAgICAg ICAgKGJpbiAoc3RyaW5nLWFwcGVuZCBvdXQgIi9iaW4iKSkKICAgICAgICAgICAgICAgIChndWls ZSAoYXNzb2MtcmVmICVidWlsZC1pbnB1dHMgImd1aWxlIikpCiAgICAgICAgICAgICAgICAoZ3Vp bGUgKHN0cmluZy1hcHBlbmQgZ3VpbGUgIi9iaW4vZ3VpbGUiKSkKICAgICAgICAgICAgICAgIChk YWVtb24gKHN0cmluZy1hcHBlbmQgYmluICIvZGFlbW9uIikpCiAgICAgICAgICAgICAgICAodGVz dCAoc3RyaW5nLWFwcGVuZCBiaW4gIi90ZXN0IikpKQogICAgICAgICAgIChta2Rpci1wIGJpbikK ICAgICAgICAgICAoY2FsbC13aXRoLW91dHB1dC1maWxlIHRlc3QKICAgICAgICAgICAgIChsYW1i ZGEgKHApCiAgICAgICAgICAgICAgIChmb3JtYXQgcCAiIyEgfmEgLS1uby1hdXRvLWNvbXBpbGVc biIgZ3VpbGUgcCkKICAgICAgICAgICAgICAgKGZvcm1hdCBwICIhIwoodXNlLW1vZHVsZXMgKHNo ZXBoZXJkIHNlcnZpY2UpKQooZm9yaytleGVjLWNvbW1hbmQgKGxpc3QgfnMpICM6bG9nLWZpbGUg XCIvdG1wL2RhZW1vbi5sb2dcIikKKGxldCBsb29wICgoY291bnQgNSkpCiAgKHVubGVzcyAoemVy bz8gY291bnQpCiAgICAoZGlzcGxheSBcIi5cIikKICAgIChzbGVlcCAxKQogICAgKGxvb3AgKDEt IGNvdW50KSkpKQooZm9ybWF0ICN0IFwiXFxuZXhpdFxcblwiKQoiIGRhZW1vbikpKQogICAgICAg ICAgIChjaG1vZCB0ZXN0ICNvNzU1KQogICAgICAgICAgIChjYWxsLXdpdGgtb3V0cHV0LWZpbGUg ZGFlbW9uCiAgICAgICAgICAgICAobGFtYmRhIChwKQogICAgICAgICAgICAgICAoZm9ybWF0IHAg IiMhIH5hIC0tbm8tYXV0by1jb21waWxlXG4iIGd1aWxlIHApCiAgICAgICAgICAgICAgIChkaXNw bGF5ICIhIwooZm9ybWF0ICN0IFwiZGFlbW9uLXN0YXJ0XFxuXCIpCihsZXQgbG9vcCAoKGNvdW50 IDEwKSkKICAodW5sZXNzICh6ZXJvPyBjb3VudCkKICAgIChsZXQgKChjaGFyICh3aXRoLWlucHV0 LWZyb20tZmlsZSBcIi9kZXYvdXJhbmRvbVwiIHJlYWQtY2hhcikpKQogICAgICAoZm9ybWF0ICN0 IFwiZGFlbW9uOiB+YSB+YVxcblwiIGNvdW50IGNoYXIpCiAgICAgIChmb3JjZS1vdXRwdXQgKGN1 cnJlbnQtb3V0cHV0LXBvcnQpKQogICAgICAoY2FsbC13aXRoLW91dHB1dC1maWxlIFwiL2Rldi9u dWxsXCIKICAgICAgICAobGFtYmRhIChwKSAoZm9ybWF0IHAgXCJkYWVtb246IH5hIH5hXFxuXCIg Y291bnQgY2hhcikpKQogICAgICAoc2xlZXAgMSkKICAgICAgKGxvb3AgKDEtIGNvdW50KSkpKSkK KGZvcm1hdCAjdCBcIlxuZGFlbW9uLWV4aXRcXG5cIikKIiBwKSkpCiAgICAgICAgICAgKGNobW9k IGRhZW1vbiAjbzc1NSkpCiAgICAgICAgICN0KSkpCiAgICAoaG9tZS1wYWdlICJodHRwczovL2Rl enluZS5vcmciKQogICAgKHN5bm9wc2lzICJ2b3JrIikKICAgIChkZXNjcmlwdGlvbiAidm9yayIp CiAgICAobGljZW5zZSBncGwzKykpKQoKdm9yawoK --=-=-= Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable --=20 Jan Nieuwenhuizen | GNU LilyPond http://lilypond.org Freelance IT http://JoyofSource.com | Avatar=C2=AE http://AvatarAcademy.com --=-=-=--