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troglobit / finit

Fast init for Linux. Cookies included
https://troglobit.com/projects/finit/
MIT License
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Automount of /run and tmpfiles.d creating /run/utmp lacking documentation #374

Closed az143 closed 8 months ago

az143 commented 8 months ago

situation: glibc 2.31, mdev instead of udev, no hook scripts or other helping hands that do anything with /run, no /run in /etc/fstab.

in that case finit mounts /run as tmpfs, then continues to utmp_set_boot() and set_utent() - but nothing creates a missing utmp file, so setutent() fails so no utmp file, no boot entry therein and thus tools like runlevel & co fail to determine the runlevel. for comparison: sysvinit creates that file by script, and the documentation for setutent() doesn't say anything about utmp file autocreation, so i think finit is at fault here and should create it.

two-line fix to follow via PR in a few minutes.

troglobit commented 8 months ago

This should be handled already by the new tmpfiles.d support[^1] in the bootmisc plugin, which runs after all filesystems are mounted, including any missing /run set up by finit with a tmpfs.

Since the canonical path is /var/run/utmp, I have to ask, do you have the compat symlink /var/run -> /run on your system?

[^1]: Static files, directories, etc. needed by the system are being migrated to using the tmpfiles.d support instead of hard-coding mkdir/touch.

az143 commented 8 months ago

this is debian on an embedded system, so, yes: /var/run points to /run. support for tmpfiles.d doesn't help as this does not have anything systemd-ish on it. personally i'd have expected finit to not require systemd components for normal operation.

troglobit commented 8 months ago

Finit has its own bare bones tmpfiles.d.

az143 commented 8 months ago

i must have screwed up my installation... which i seem to have; the tmpfiles.d files are not where they should be. from reading the docs, i didn't realise that the bootmisc plugin implements that aspect of finit. ok to leave this open until i submit a PR for expanding that bit of the documentation a little?

troglobit commented 8 months ago

i must have screwed up my installation... which i seem to have; the tmpfiles.d files are not where they should be.

from reading the docs, i didn't realise that the bootmisc plugin implements that aspect of finit. ok to leave this open until i submit a PR for expanding that bit of the documentation a little?

The docs could use a real overhaul/split, I've planned this in for 5.0. In the meantime anyone is welcome to improve on the sad state things are. Thanks

troglobit commented 8 months ago

Updated doc/bootstrap.md and doc/plugins.md slightly for this release.