From: "Ludovic Courtès" <ludo@gnu.org>
To: Thiago Jung Bauermann <bauermann@kolabnow.com>
Cc: 54997@debbugs.gnu.org
Subject: [bug#54997] [PATCH 00/12] Add "least authority" program wrapper
Date: Tue, 26 Apr 2022 22:48:18 +0200 [thread overview]
Message-ID: <878rrrk1v1.fsf_-_@gnu.org> (raw)
In-Reply-To: <87h76klv6j.fsf@kolabnow.com> (Thiago Jung Bauermann's message of "Fri, 22 Apr 2022 17:10:19 -0300")
Thiago Jung Bauermann <bauermann@kolabnow.com> skribis:
> I'm a bit concerned about running arbitrary commands as PID 1 of process
> namespaces. A process running as PID 1 (even in a child namespace) is a
> special case and is treated differently by the Linux kernel than any
> other process, so it needs to be a program that has been designed to
> work in that situation. There are two differences from regular
> processes:
>
> 1. PID 1 inherits orphan processes and needs to wait() on them when they
> quit, in order to avoid accumulating zombie processes in the system.
>
> 2. Unlike regular processes, PID 1 doesn't have default signal handlers.
Actually right now ‘make-forkexec-constructor/container’ runs processes
as PID 1.
AFAIK this hasn’t been a problem in practice, probably for two reasons:
(1) we’re wrapping daemons that don’t fork (unlike Jenkins…), and (2)
‘call-with-container’ installs a SIGINT handler and probably daemons
also install SIGTERM and related handlers of their own.
Anyway, it’s a class of problem that would be best avoided in the first
place!
Ludo’.
next prev parent reply other threads:[~2022-04-26 20:52 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-17 21:01 [bug#54997] [PATCH 00/12] Add "least authority" program wrapper Ludovic Courtès
2022-04-17 21:04 ` [bug#54997] [PATCH 01/12] gexp: Add 'references-file' Ludovic Courtès
2022-04-17 21:04 ` [bug#54997] [PATCH 02/12] file-systems: Avoid load-time warnings when attempting to load (guix store) Ludovic Courtès
2022-04-17 21:04 ` [bug#54997] [PATCH 03/12] linux-container: 'call-with-container' relays SIGTERM and SIGINT Ludovic Courtès
2022-04-17 21:04 ` [bug#54997] [PATCH 04/12] Add (guix least-authority) Ludovic Courtès
2022-04-18 9:15 ` Maxime Devos
2022-04-19 22:04 ` [bug#54997] [PATCH 00/12] Add "least authority" program wrapper Ludovic Courtès
2022-04-18 9:18 ` [bug#54997] [PATCH 04/12] Add (guix least-authority) Maxime Devos
2022-04-19 22:05 ` [bug#54997] [PATCH 00/12] Add "least authority" program wrapper Ludovic Courtès
2022-04-22 20:10 ` [bug#54997] [PATCH 04/12] Add (guix least-authority) Thiago Jung Bauermann via Guix-patches via
2022-04-26 20:30 ` [bug#54997] [PATCH 00/12] Add "least authority" program wrapper Ludovic Courtès
2022-04-29 3:43 ` Thiago Jung Bauermann via Guix-patches via
2022-04-26 20:48 ` Ludovic Courtès [this message]
2022-04-27 16:56 ` [bug#54997] [PATCH v2 00/15] " Ludovic Courtès
2022-04-27 16:56 ` [bug#54997] [PATCH v2 01/15] gexp: Add 'references-file' Ludovic Courtès
2022-04-27 16:56 ` [bug#54997] [PATCH v2 02/15] file-systems: Avoid load-time warnings when attempting to load (guix store) Ludovic Courtès
2022-04-27 16:56 ` [bug#54997] [PATCH v2 03/15] linux-container: 'call-with-container' relays SIGTERM and SIGINT Ludovic Courtès
2022-04-27 16:56 ` [bug#54997] [PATCH v2 04/15] linux-container: Ensure signal-handling asyncs get a chance to run Ludovic Courtès
2022-04-27 16:56 ` [bug#54997] [PATCH v2 05/15] linux-container: Add #:child-is-pid1? parameter to 'call-with-container' Ludovic Courtès
2022-04-27 16:56 ` [bug#54997] [PATCH v2 06/15] Add (guix least-authority) Ludovic Courtès
2022-04-27 16:56 ` [bug#54997] [PATCH v2 07/15] services: dicod: Rewrite using 'least-authority-wrapper' Ludovic Courtès
2022-04-27 16:56 ` [bug#54997] [PATCH v2 08/15] services: dicod: Use 'make-inetd-constructor' Ludovic Courtès
2022-04-27 16:56 ` [bug#54997] [PATCH v2 09/15] services: bitlbee: " Ludovic Courtès
2022-04-27 16:56 ` [bug#54997] [PATCH v2 10/15] services: ipfs: Adjust for Shepherd 0.9 Ludovic Courtès
2022-04-27 16:56 ` [bug#54997] [PATCH v2 11/15] services: ipfs: Use 'least-authority-wrapper' Ludovic Courtès
2022-04-27 16:56 ` [bug#54997] [PATCH v2 12/15] services: wesnothd: Grant write access to /var/run/wesnothd Ludovic Courtès
2022-04-27 16:56 ` [bug#54997] [PATCH v2 13/15] services: wesnothd: Use 'least-authority-wrapper' Ludovic Courtès
2022-04-27 16:56 ` [bug#54997] [PATCH v2 14/15] services: quassel: " Ludovic Courtès
2022-04-27 16:56 ` [bug#54997] [PATCH v2 15/15] services: opendht: " Ludovic Courtès
2022-05-01 20:16 ` bug#54997: [PATCH 00/12] Add "least authority" program wrapper Ludovic Courtès
2022-05-02 4:25 ` [bug#54997] " Thiago Jung Bauermann via Guix-patches via
2022-04-17 21:04 ` [bug#54997] [PATCH 05/12] services: dicod: Rewrite using 'least-authority-wrapper' Ludovic Courtès
2022-04-17 21:04 ` [bug#54997] [PATCH 06/12] services: dicod: Use 'make-inetd-constructor' Ludovic Courtès
2022-04-17 21:04 ` [bug#54997] [PATCH 07/12] services: bitlbee: " Ludovic Courtès
2022-04-18 9:13 ` Maxime Devos
2022-04-19 22:03 ` [bug#54997] [PATCH 00/12] Add "least authority" program wrapper Ludovic Courtès
2022-04-17 21:04 ` [bug#54997] [PATCH 08/12] services: ipfs: Adjust for Shepherd 0.9 Ludovic Courtès
2022-04-17 21:04 ` [bug#54997] [PATCH 09/12] services: ipfs: Use 'least-authority-wrapper' Ludovic Courtès
2022-04-18 9:08 ` Maxime Devos
2022-04-19 22:02 ` [bug#54997] [PATCH 00/12] Add "least authority" program wrapper Ludovic Courtès
2022-04-22 14:39 ` Maxime Devos
2022-04-27 22:01 ` Ludovic Courtès
2022-04-28 11:29 ` Maxime Devos
2022-04-28 19:25 ` Ludovic Courtès
2022-04-28 19:52 ` Maxime Devos
2022-04-17 21:04 ` [bug#54997] [PATCH 10/12] services: wesnothd: Grant write access to /var/run/wesnothd Ludovic Courtès
2022-04-17 21:04 ` [bug#54997] [PATCH 11/12] services: wesnothd: Use 'least-authority-wrapper' Ludovic Courtès
2022-04-17 21:04 ` [bug#54997] [PATCH 12/12] services: quassel: " Ludovic Courtès
2022-04-18 9:12 ` Maxime Devos
2022-04-19 21:59 ` [bug#54997] [PATCH 00/12] Add "least authority" program wrapper Ludovic Courtès
2022-04-22 5:01 ` [bug#54997] [PATCH 01/12] gexp: Add 'references-file' Thiago Jung Bauermann via Guix-patches via
2022-04-26 20:17 ` [bug#54997] [PATCH 00/12] Add "least authority" program wrapper Ludovic Courtès
2022-04-22 15:02 ` Maxime Devos
2022-04-26 20:22 ` Ludovic Courtès
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=878rrrk1v1.fsf_-_@gnu.org \
--to=ludo@gnu.org \
--cc=54997@debbugs.gnu.org \
--cc=bauermann@kolabnow.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this external index
https://git.savannah.gnu.org/cgit/guix.git
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.