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man: add note which tmpfiles services read which files

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Fixes #12596.
This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2019-05-21 17:08:35 +02:00
parent d7c5b3ec3e
commit 727036325a
1 changed files with 17 additions and 1 deletions
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18
man/systemd-tmpfiles.xml
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@ -65,6 +65,22 @@
<citerefentry><refentrytitle>tmpfiles.d</refentrytitle><manvolnum>5</manvolnum></citerefentry>
are searched for a matching file and the file found that has the highest priority is
executed.</para>
<para>System services (<filename>systemd-tmpfiles-setup.service</filename>,
<filename>systemd-tmpfiles-setup-dev.service</filename>,
<filename>systemd-tmpfiles-clean.service</filename>) invoke <command>systemd-tmpfiles</command> to create
system files and to perform system wide cleanup. Those services read administrator-controlled
configuration files in <filename>tmpfiles.d/</filename> directories. User services
(<filename>systemd-tmpfiles-setup.service</filename>,
<filename>systemd-tmpfiles-clean.service</filename>) also invoke <command>systemd-tmpfiles</command>, but
it reads a separate set of files, which includes user-controlled files under
<filename>~/.config/user-tmpfiles.d/</filename> and <filename>~/.local/share/user-tmpfiles.d/</filename>,
and administrator-controller files under <filename>/usr/share/user-tmpfiles.d/</filename>. Users may use
this to create and clean up files under their control, but the system instance performs global cleanup
and is not influenced by user configuration. Note that this means a time-based cleanup configured in the
system instance, such as the one typically configured for <filename>/tmp</filename>, will thus also
affect files created by the user instance if they are placed in <filename>/tmp</filename>, even if the
user instance's time-based cleanup is turned off.</para>
</refsect1>
<refsect1>
@ -174,7 +190,7 @@
</variablelist>
<para>It is possible to combine <option>--create</option>, <option>--clean</option>, and <option>--remove</option>
in one invocation (in which case removal and clean-up are executed before creation of new files). For example,
in one invocation (in which case removal and cleanup are executed before creation of new files). For example,
during boot the following command line is executed to ensure that all temporary and volatile directories are
removed and created according to the configuration file:</para>