From: Lennart Poettering <lennart@amutable.com>
Date: Sat, 20 Jun 2026 21:35:06 +0000 (+0200)
Subject: pam_systemd: add option for acquiring logind inhibitor locks for the duration of... 
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e652ec10992a2282552b5a1e2950b36b8186c9c2;p=thirdparty%2Fsystemd.git

pam_systemd: add option for acquiring logind inhibitor locks for the duration of a session (#42275)

This adds support in pam_systemd for acquiring an inhibitor lock when a
pam session is active, and can be used (for example) to prevent
suspend/sleep of a host when an ssh session is active on the host. The
reason string can be customized via `inhibit-why=`.

For example, /etc/pam.d/sshd can now contain this line: `-session
optional pam_systemd.so inhibit=sleep`

And sleep will be blocked when someone is logged into the system over
ssh:

```
foo:~$ systemd-inhibit --list --no-pager
WHO            UID USER PID COMM            WHAT  WHY                 MODE
NetworkManager 0   root 397 NetworkManager  sleep NetworkManager nee… delay
Realtime Kit   0   root 401 rtkit-daemon    sleep Demote realtime sc… delay
sshd           0   root 667 sshd-session.pa sleep Active PAM session  block
```

Fixes: #20654
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e652ec10992a2282552b5a1e2950b36b8186c9c2