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Bug#1071462: installing/upgrading libc6 does not work in sbuild when systemd is installed as ischroot declines

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Hi,

Quoting Chris Hofstaedtler (2024-05-20 10:38:04)
> * Johannes Schauer Marin Rodrigues <josch@debian.org> [240520 07:35]:
> > [..] But maybe it [glibc's postinst] should be doing some
> > more involved checks about what PID 1 is? It could then make sure to only call
> > systemd telinit if systemd is pid 1. [..]
> 
> Well, that would probably suck. Putting the knowledge when to call
> telinit, and a specific telinit, into a ton of different things
> makes all those things hard to get right, hard to update, the usual.
> 
> I've checked the sysvinit and the systemd implementations now, and
> they are not that different. Both try to talk to their respective
> pid1 daemons first using their respective communication socket.
> 
> But then, if that doesn't work, they diverge:
> - sysvinit's telinit just gives up
> - systemd's telinit, *as an explicit fallback*, sends signals.
> 
> systemd's telinit (aka systemctl) helpfully exits if it detects
> being in a chroot, before doing any of that.
> 
> IWSTM systemd's telinit could, if called as telinit, not do the
> fallback to stick with sysvinit's behaviour?
> 
> As a bonus, sysvinit's telinit could also gain the chroot check, and glibc's
> postinst (and other places) can become simpler again.

via irc, jochen also pointed out: telinit could be the component which checks
what PID 1 actually is and only do its thing after it confirmed that it is
indeed an init system like systemd that is providing PID 1?

Thanks!

cheers, josch

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Thread

Bug#1071462: installing/upgrading libc6 does not work in sbuild when systemd is installed as ischroot declines Helmut Grohne <helmut@subdivi.de> - 2024-05-19 18:50 +0200
  Bug#1071462: installing/upgrading libc6 does not work in sbuild when systemd is installed as ischroot declines Luca Boccassi <bluca@debian.org> - 2024-05-19 19:10 +0200
    Bug#1071462: installing/upgrading libc6 does not work in sbuild when systemd is installed as ischroot declines Helmut Grohne <helmut@subdivi.de> - 2024-05-19 23:20 +0200
      Bug#1071462: installing/upgrading libc6 does not work in sbuild when systemd is installed as ischroot declines Chris Hofstaedtler <zeha@debian.org> - 2024-05-20 01:10 +0200
        Bug#1071462: installing/upgrading libc6 does not work in sbuild when systemd is installed as ischroot declines Helmut Grohne <helmut@subdivi.de> - 2024-05-20 07:30 +0200
          Bug#1071462: installing/upgrading libc6 does not work in sbuild when systemd is installed as ischroot declines Johannes Schauer Marin Rodrigues <josch@debian.org> - 2024-05-20 07:40 +0200
            Bug#1071462: installing/upgrading libc6 does not work in sbuild when systemd is installed as ischroot declines Chris Hofstaedtler <zeha@debian.org> - 2024-05-20 10:50 +0200
              Bug#1071462: installing/upgrading libc6 does not work in sbuild when systemd is installed as ischroot declines Johannes Schauer Marin Rodrigues <josch@debian.org> - 2024-05-20 11:30 +0200
                Bug#1071462: installing/upgrading libc6 does not work in sbuild when systemd is installed as ischroot declines Luca Boccassi <bluca@debian.org> - 2024-05-20 11:30 +0200
                Bug#1071462: installing/upgrading libc6 does not work in sbuild when systemd is installed as ischroot declines Aurelien Jarno <aurel32@debian.org> - 2024-05-20 11:40 +0200
                Bug#1071462: installing/upgrading libc6 does not work in sbuild when systemd is installed as ischroot declines Luca Boccassi <bluca@debian.org> - 2024-05-20 11:50 +0200
                Bug#1071462: installing/upgrading libc6 does not work in sbuild when systemd is installed as ischroot declines Aurelien Jarno <aurel32@debian.org> - 2024-05-20 12:00 +0200
                Bug#1071462: installing/upgrading libc6 does not work in sbuild when systemd is installed as ischroot declines Luca Boccassi <bluca@debian.org> - 2024-05-20 12:10 +0200
                Bug#1071462: installing/upgrading libc6 does not work in sbuild when systemd is installed as ischroot declines Johannes Schauer Marin Rodrigues <josch@debian.org> - 2024-05-20 16:20 +0200
                Bug#1071462: installing/upgrading libc6 does not work in sbuild when systemd is installed as ischroot declines Luca Boccassi <bluca@debian.org> - 2024-05-20 16:20 +0200
              Bug#1071462: installing/upgrading libc6 does not work in sbuild when systemd is installed as ischroot declines Aurelien Jarno <aurel32@debian.org> - 2024-05-20 11:50 +0200
                Bug#1071462: installing/upgrading libc6 does not work in sbuild when systemd is installed as ischroot declines Luca Boccassi <bluca@debian.org> - 2024-05-20 16:00 +0200

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