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config/session-management.md: dumb_runtime_dir and pam_rundir #854

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config/session-management.md: dumb_runtime_dir and pam_rundir #854

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11 changes: 11 additions & 0 deletions src/config/session-management.md
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Expand Up @@ -85,6 +85,17 @@ user-specific runtime files.
Install [elogind](#elogind) or [turnstile](#turnstile) as your session manager
to automatically set up `XDG_RUNTIME_DIR`.

If using [seatd](#seatd), you can consider those two options:
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turnstile can also be used with seatd

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@DonPiotr DonPiotr Sep 2, 2025 •
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Oh, I didn't know that.
On the other hand I think that who chooses seatd, is looking for minimal setup.

Maybe, need to make some longer description of each manager, to help choose the right one for one's needs.


1. You can install `dumb_runtime_dir`. It does the bare minimum.
It will create the directory `/run/user/<UID>` and set `XDG_RUNTIME_DIR` variable on login.

2. You can install `pam_rundir` as a more complete solution.
It will create the directory `/run/user/<UID>` and set `XDG_RUNTIME_DIR` variable on login
and will delete that directory on logout.
To make it work, you need add the following line to
`/etc/pam.d/system-login` in the sessions block: `-session optional pam_rundir.so`

Alternatively, manually set the environment variable through the shell. Make
sure to create a dedicated user directory and set its permissions to `700`. A
good default location is `/run/user/$(id -u)`.