man: drop unused <authorgroup> tags from man sources

[thirdparty/systemd.git] / man / pam_systemd.xml

diff --git a/man/pam_systemd.xml b/man/pam_systemd.xml
index a769a49bbebbaa5ded916b240a3a60f0996025ee..5eab995a5240148504f61b63c8bca900fb1eccff 100644 (file)
--- a/man/pam_systemd.xml
+++ b/man/pam_systemd.xml
@@ -4,23 +4,6 @@
 
 <!--
   SPDX-License-Identifier: LGPL-2.1+
-
-  This file is part of systemd.
-
-  Copyright 2010 Lennart Poettering
-
-  systemd is free software; you can redistribute it and/or modify it
-  under the terms of the GNU Lesser General Public License as published by
-  the Free Software Foundation; either version 2.1 of the License, or
-  (at your option) any later version.
-
-  systemd is distributed in the hope that it will be useful, but
-  WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-  Lesser General Public License for more details.
-
-  You should have received a copy of the GNU Lesser General Public License
-  along with systemd; If not, see <http://www.gnu.org/licenses/>.
 -->
 
 <refentry id="pam_systemd" conditional='HAVE_PAM'>
@@ -28,15 +11,6 @@
   <refentryinfo>
     <title>pam_systemd</title>
     <productname>systemd</productname>
-
-    <authorgroup>
-      <author>
-        <contrib>Developer</contrib>
-        <firstname>Lennart</firstname>
-        <surname>Poettering</surname>
-        <email>lennart@poettering.net</email>
-      </author>
-    </authorgroup>
   </refentryinfo>
 
   <refmeta>
@@ -262,6 +236,60 @@
     based on the <varname>$DISPLAY</varname> variable.</para>
   </refsect1>
 
+  <refsect1>
+    <title>Session limits</title>
+
+    <para>PAM modules earlier in the stack, that is those that come before <command>pam_systemd.so</command>,
+    can set session scope limits using the PAM context objects. The data for these objects is provided as NUL-terminated C strings
+    and maps directly to the respective unit resource control directives. Note that these limits apply to individual sessions of the user,
+    they do not apply to all user processes as a combined whole. In particular, the per-user <command>user@.service</command> unit instance,
+    which runs the <command>systemd --user</command> manager process and its children, and is tracked outside of any session, being shared
+    by all the user's sessions, is not covered by these limits.
+    </para>
+
+    <para> See
+    <citerefentry><refentrytitle>systemd.resource-control</refentrytitle><manvolnum>5</manvolnum></citerefentry> for more information about the resources.
+    Also, see <citerefentry><refentrytitle>pam_set_data</refentrytitle><manvolnum>3</manvolnum></citerefentry> for additional information about how to set
+    the context objects.
+    </para>
+
+    <variablelist>
+      <varlistentry>
+        <term><varname>systemd.memory_max</varname></term>
+
+        <listitem><para>Sets unit <varname>MemoryMax=</varname>.</para></listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><varname>systemd.tasks_max</varname></term>
+
+        <listitem><para>Sets unit <varname>TasksMax=</varname>.</para></listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><varname>systemd.cpu_weight</varname></term>
+
+        <listitem><para>Sets unit <varname>CPUWeight=</varname>.</para></listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><varname>systemd.io_weight</varname></term>
+
+        <listitem><para>Sets unit <varname>IOWeight=</varname>.</para></listitem>
+      </varlistentry>
+    </variablelist>
+
+    <para>Example data as can be provided from an another PAM module:
+      <programlisting>
+pam_set_data(handle, "systemd.memory_max", (void *)"200M", cleanup);
+pam_set_data(handle, "systemd.tasks_max",  (void *)"50",   cleanup);
+pam_set_data(handle, "systemd.cpu_weight", (void *)"100",  cleanup);
+pam_set_data(handle, "systemd.io_weight",  (void *)"340",  cleanup);
+      </programlisting>
+    </para>
+
+  </refsect1>
+
   <refsect1>
     <title>Example</title>