man: explain why pam_systemd_home wants to be in all four stacks

Suggested here:

https://bugzilla.redhat.com/show_bug.cgi?id=2085485#c5
This commit is contained in:
Lennart Poettering 2022-07-11 15:12:24 +02:00 committed by Luca Boccassi
parent 9dc86a1414
commit 90bc309aa2

View file

@ -93,8 +93,13 @@
<refsect1>
<title>Module Types Provided</title>
<para>The module provides all four management operations: <option>auth</option>, <option>account</option>,
<option>session</option>, <option>password</option>.</para>
<para>The module implements all four PAM operations: <option>auth</option> (reason: when per-user
disk encryption is used, the disk encryption key is derived from the authentication credential supplied
at login time), <option>account</option> (reason: <filename>systemd-homed.service</filename> account
validity may be configured in more detail than in the traditional Linux user database, and thus needs to
be verified separately), <option>session</option> (user sessions must be tracked, in order to implement
automatic release when the last session of a managed user is gone), <option>password</option> (user
passwords may be changed through PAM).</para>
</refsect1>
<refsect1>