mirror of
https://github.com/systemd/systemd
synced 2024-10-07 00:30:59 +00:00
818bf54632
This part of the copyright blurb stems from the GPL use recommendations: https://www.gnu.org/licenses/gpl-howto.en.html The concept appears to originate in times where version control was per file, instead of per tree, and was a way to glue the files together. Ultimately, we nowadays don't live in that world anymore, and this information is entirely useless anyway, as people are very welcome to copy these files into any projects they like, and they shouldn't have to change bits that are part of our copyright header for that. hence, let's just get rid of this old cruft, and shorten our codebase a bit.
99 lines
3.8 KiB
XML
99 lines
3.8 KiB
XML
<?xml version='1.0'?> <!--*-nxml-*-->
|
|
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
|
|
"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
|
|
|
|
<!--
|
|
SPDX-License-Identifier: LGPL-2.1+
|
|
|
|
Copyright 2016 Lennart Poettering
|
|
-->
|
|
|
|
<refentry id="nss-systemd" conditional='ENABLE_NSS_SYSTEMD'>
|
|
|
|
<refentryinfo>
|
|
<title>nss-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>
|
|
<refentrytitle>nss-systemd</refentrytitle>
|
|
<manvolnum>8</manvolnum>
|
|
</refmeta>
|
|
|
|
<refnamediv>
|
|
<refname>nss-systemd</refname>
|
|
<refname>libnss_systemd.so.2</refname>
|
|
<refpurpose>Provide UNIX user and group name resolution for dynamic users and groups.</refpurpose>
|
|
</refnamediv>
|
|
|
|
<refsynopsisdiv>
|
|
<para><filename>libnss_systemd.so.2</filename></para>
|
|
</refsynopsisdiv>
|
|
|
|
<refsect1>
|
|
<title>Description</title>
|
|
|
|
<para><command>nss-systemd</command> is a plug-in module for the GNU Name Service Switch (NSS) functionality of the
|
|
GNU C Library (<command>glibc</command>), providing UNIX user and group name resolution for dynamic users and
|
|
groups allocated through the <varname>DynamicUser=</varname> option in systemd unit files. See
|
|
<citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry> for details on
|
|
this option.</para>
|
|
|
|
<para>This module also ensures that the root and nobody users and groups (i.e. the users/groups with the UIDs/GIDs
|
|
0 and 65534) remain resolvable at all times, even if they aren't listed in <filename>/etc/passwd</filename> or
|
|
<filename>/etc/group</filename>, or if these files are missing.</para>
|
|
|
|
<para>To activate the NSS module, add <literal>systemd</literal> to the lines starting with
|
|
<literal>passwd:</literal> and <literal>group:</literal> in <filename>/etc/nsswitch.conf</filename>.</para>
|
|
|
|
<para>It is recommended to place <literal>systemd</literal> after the <literal>files</literal> or
|
|
<literal>compat</literal> entry of the <filename>/etc/nsswitch.conf</filename> lines so that
|
|
<filename>/etc/passwd</filename> and <filename>/etc/group</filename> based mappings take precedence.</para>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>Example</title>
|
|
|
|
<para>Here is an example <filename>/etc/nsswitch.conf</filename> file that enables
|
|
<command>nss-systemd</command> correctly:</para>
|
|
|
|
<programlisting>passwd: compat mymachines <command>systemd</command>
|
|
group: compat mymachines <command>systemd</command>
|
|
shadow: compat
|
|
|
|
hosts: files mymachines resolve [!UNAVAIL=return] dns myhostname
|
|
networks: files
|
|
|
|
protocols: db files
|
|
services: db files
|
|
ethers: db files
|
|
rpc: db files
|
|
|
|
netgroup: nis</programlisting>
|
|
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>See Also</title>
|
|
<para>
|
|
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
|
|
<citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
|
|
<citerefentry><refentrytitle>nss-resolve</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
|
|
<citerefentry><refentrytitle>nss-myhostname</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
|
|
<citerefentry><refentrytitle>nss-mymachines</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
|
|
<citerefentry project='man-pages'><refentrytitle>nsswitch.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
|
|
<citerefentry project='man-pages'><refentrytitle>getent</refentrytitle><manvolnum>1</manvolnum></citerefentry>
|
|
</para>
|
|
</refsect1>
|
|
|
|
</refentry>
|