Re: [announce] Winter 2021-2022 release

From: Steve Litt <>
Date: Tue, 21 Dec 2021 18:54:17 -0500

Hi Laurent,

Congratulations on your updated software!

I searched through my execline documentation page
( ) to see whether
revisions were needed. They weren't, but I found and fixed several
errors on that page.

I've been doing other things and haven't paid much attention to the
progress of s6. I haven't found any simple documentation on it. Let me
see if I understand...

* Before first installation, back up /sbin/init so if things go
  wrong it's easy to boot with your prior init

* Before running any s6 components, do all the correct config so that
  the s6-rc-compile program to produce a proper s6-rc. Do this every
  time you add or subtract services

* Grub boots to s6-linux-init-maker, which creates several things,
  including a new /sbin/init, and then execs /sbin/init

* /sbin/init does the necessary stuff about signals and the like, and
  then forks the stage1 script

* When the stage 1 script completes, /sbin/init execs the stage 2
  script, so the stage 2 script is PID1 now

* The stage 2 script forks s6-rc-init

* When s6-rc-init completes, the stage 2 script execs s6-rc, so s6-rc
  is PID1

* s6-rc supervises s6-svscan, which supervises all the other services,
  both longrun and shortrun.

The preceding is the best interpretation I could put together from,, and discussions with
you. What do I need to do to make the preceding sequence accurate?



Steve Litt
Spring 2021 featured book: Troubleshooting Techniques of the Successful

Laurent Bercot said on Tue, 21 Dec 2021 08:19:38 +0000

> Hello,
> New versions of all the packages are available.
> The changes are, for the most part, minimal: essentially, the new
>versions fix a bug in the build system that made cross-building under
>slashpackage more difficult than intended. Very few people should
>have been impacted by this bug.
> Some packages had a few more bugfixes; and some packages have
>additional functionality. No major update; no compatibility break.
> The new versions are the following:
>skalibs- (minor)
>nsss- (release)
>utmps- (minor)
>execline- (minor)
>s6- (release)
>s6-rc- (minor)
>s6-portable-utils- (release)
>s6-linux-utils- (release)
>s6-linux-init- (minor)
>s6-dns- (release)
>s6-networking- (minor)
>mdevd- (release)
>bcnm- (release)
>dnsfunnel- (release)
>smtpd-starttls-proxy- (release)
> Dependencies have all been updated to the latest versions. They are
> not
>strict: libraries and binaries may build with older releases of their
>dependencies, although this is not guaranteed.
> You do not need to recompile your s6-rc service databases. To make
> use
>of the new s6-linux-init functionality, however, you will have to
>recreate your run-image.
> You do not need to restart your supervision tree, unless you're
>your old s6 binaries.
> Details of minor package changes follow.
>* skalibs-
> ----------------
> - New function: opendir_at()
>* utmps-
> ------------
> - New binary: utmps-write, a generic utmp client that can write
>user-crafted records to the utmp and/or wtmp databases.
>* execline-
> ----------------
> - New -s option to the case binary, enabling fnmatch() (shell)
>expression matching instead of regular expression matching.
>* s6-rc-
> -------------
> - Bundle contents are now read in a "contents.d/" subdirectory, one
>file per content, instead of one per line in a "contents" file. In
>the same way, service dependencies are now read in a "dependencies.d/"
>subdirectory, one file per dependency. Old "contents" and
>"dependencies" files are still supported, but deprecated. This change
>allows better integration of s6-rc service definitions with package
>* s6-linux-init-
> ---------------------
> - New -S option to s6-linux-init-maker, forcing a sync on halt even
>in a container.
>* s6-networking-
> ---------------------
> - SNI wildcarding is implemented, as well as a workaround for a
>bearssl bug causing errors on certificate signatures in certain cases.
> Enjoy,
> Bug-reports welcome.
> And happy holidays to you all!
> Laurent
Received on Wed Dec 22 2021 - 00:54:17 CET

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