man: clarify that user rlimits cannot go beyond limits set for service mgr

Fixes: #10758

1 files changed, 8 insertions, 24 deletions

diff --git a/man/systemd-system.conf.xml b/man/systemd-system.conf.xml
index e403fa5308..e22b335d30 100644
--- a/man/systemd-system.conf.xml
+++ b/man/systemd-system.conf.xml
@@ -382,30 +382,14 @@
         <term><varname>DefaultLimitRTPRIO=</varname></term>
         <term><varname>DefaultLimitRTTIME=</varname></term>
 
-        <listitem><para>These settings control various default
-        resource limits for units. See
-        <citerefentry><refentrytitle>setrlimit</refentrytitle><manvolnum>2</manvolnum></citerefentry>
-        for details. The resource limit is possible to specify in two formats,
-        <option>value</option> to set soft and hard limits to the same value,
-        or <option>soft:hard</option> to set both limits individually (e.g. DefaultLimitAS=4G:16G).
-        Use the string <varname>infinity</varname> to
-        configure no limit on a specific resource. The multiplicative
-        suffixes K (=1024), M (=1024*1024) and so on for G, T, P and E
-        may be used for resource limits measured in bytes
-        (e.g. DefaultLimitAS=16G). For the limits referring to time values,
-        the usual time units ms, s, min, h and so on may be used (see
-        <citerefentry><refentrytitle>systemd.time</refentrytitle><manvolnum>7</manvolnum></citerefentry>
-        for details). Note that if no time unit is specified for
-        <varname>DefaultLimitCPU=</varname> the default unit of seconds is
-        implied, while for <varname>DefaultLimitRTTIME=</varname> the default
-        unit of microseconds is implied. Also, note that the effective
-        granularity of the limits might influence their
-        enforcement. For example, time limits specified for
-        <varname>DefaultLimitCPU=</varname> will be rounded up implicitly to
-        multiples of 1s. These  settings may be overridden in individual units
-        using the corresponding LimitXXX= directives. Note that these resource
-        limits are only defaults for units, they are not applied to PID 1
-        itself.</para></listitem>
+        <listitem><para>These settings control various default resource limits for processes executed by
+        units. See
+        <citerefentry><refentrytitle>setrlimit</refentrytitle><manvolnum>2</manvolnum></citerefentry> for
+        details. These settings may be overridden in individual units using the corresponding
+        <varname>LimitXXX=</varname> directives, see
+        <citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry>, for
+        details, and they accept the same parameter syntax. Note that these resource limits are only defaults
+        for units, they are not applied to the service manager process (i.e. PID 1) itself.</para></listitem>
       </varlistentry>
 
       <varlistentry>