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c4708f1323
Various operations done by systemd-tmpfiles may only be safely done at
boot (e.g. removal of X lockfiles in /tmp, creation of /run/nologin).
Other operations may be done at any point in time (e.g. setting the
ownership on /{run,var}/log/journal). This distinction is largely
orthogonal to the type of operation.
A new switch --unsafe is added, and operations which should only be
executed during bootup are marked with an exclamation mark in the
configuration files. systemd-tmpfiles.service is modified to use this
switch, and guards are added so it is hard to re-start it by mistake.
If we install a new version of systemd, we actually want to enforce
some changes to tmpfiles configuration immediately. This should now be
possible to do safely, so distribution packages can be modified to
execute the "safe" subset at package installation time.
/run/nologin creation is split out into a separate service, to make it
easy to override.
https://bugzilla.redhat.com/show_bug.cgi?id=1043212
https://bugzilla.redhat.com/show_bug.cgi?id=1045849
199 lines
8.9 KiB
XML
199 lines
8.9 KiB
XML
<?xml version='1.0'?> <!--*-nxml-*-->
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
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"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
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<!--
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This file is part of systemd.
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Copyright 2010 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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-->
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<refentry id="systemd-tmpfiles">
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<refentryinfo>
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<title>systemd-tmpfiles</title>
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<productname>systemd</productname>
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<authorgroup>
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<author>
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<contrib>Developer</contrib>
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<firstname>Lennart</firstname>
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<surname>Poettering</surname>
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<email>lennart@poettering.net</email>
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</author>
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</authorgroup>
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</refentryinfo>
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<refmeta>
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<refentrytitle>systemd-tmpfiles</refentrytitle>
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<manvolnum>8</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>systemd-tmpfiles</refname>
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<refname>systemd-tmpfiles-setup.service</refname>
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<refname>systemd-tmpfiles-setup-dev.service</refname>
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<refname>systemd-tmpfiles-clean.service</refname>
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<refname>systemd-tmpfiles-clean.timer</refname>
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<refpurpose>Creates, deletes and cleans up volatile
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and temporary files and directories</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<cmdsynopsis>
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<command>systemd-tmpfiles</command>
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<arg choice="opt" rep="repeat">OPTIONS</arg>
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<arg choice="opt" rep="repeat"><replaceable>CONFIGFILE</replaceable></arg>
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</cmdsynopsis>
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<para><filename>systemd-tmpfiles-setup.service</filename></para>
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<para><filename>systemd-tmpfiles-setup-dev.service</filename></para>
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<para><filename>systemd-tmpfiles-clean.service</filename></para>
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<para><filename>systemd-tmpfiles-clean.timer</filename></para>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para><command>systemd-tmpfiles</command> creates,
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deletes, and cleans up volatile and temporary files and
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directories, based on the configuration file format and
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location specified in
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<citerefentry><refentrytitle>tmpfiles.d</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
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</para>
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<para>If invoked with no arguments, it applies all
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directives from all configuration files. If one or
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more filenames are passed on the command line, only
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the directives in these files are applied. If only
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the basename of a configuration file is specified,
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all configuration directories as specified in
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<citerefentry><refentrytitle>tmpfiles.d</refentrytitle><manvolnum>5</manvolnum></citerefentry>
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are searched for a matching file.</para>
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</refsect1>
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<refsect1>
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<title>Options</title>
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<para>The following options are understood:</para>
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<variablelist>
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<varlistentry>
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<term><option>-h</option></term>
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<term><option>--help</option></term>
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<listitem><para>Prints a short help
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text and exits.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--version</option></term>
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<listitem><para>Prints a short version
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string and exits.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--create</option></term>
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<listitem><para>If this option is
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passed, all files and directories
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marked with <varname>f</varname>,
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<varname>F</varname>,
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<varname>w</varname>,
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<varname>d</varname>,
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<varname>D</varname>,
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<varname>p</varname>,
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<varname>L</varname>,
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<varname>c</varname>,
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<varname>b</varname>,
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<varname>m</varname> in the
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configuration files are created or
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written to. Files and directories
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marked with <varname>z</varname>,
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<varname>Z</varname>,
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<varname>m</varname> have their
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ownership, access mode and security
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labels set. </para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--clean</option></term>
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<listitem><para>If this option is
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passed, all files and directories with
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an age parameter configured will be
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cleaned up.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--remove</option></term>
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<listitem><para>If this option is
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passed, all files and directories
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marked with <varname>r</varname>,
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<varname>R</varname> in the
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configuration files are
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removed.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--unsafe</option></term>
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<listitem><para>Also execute lines
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with an exclamation mark.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--prefix=PATH</option></term>
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<listitem><para>Only apply rules that
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apply to paths with the specified
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prefix. This option can be specified
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multiple times.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--exclude-prefix=PATH</option></term>
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<listitem><para>Ignore rules that
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apply to paths with the specified
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prefix. This option can be specified
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multiple times.</para></listitem>
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</varlistentry>
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</variablelist>
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<para>It is possible to combine
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<option>--create</option>, <option>--clean</option>,
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and <option>--remove</option> in one invocation. For
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example, during boot the following command line is
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executed to ensure that all temporary and volatile
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directories are removed and created according to the
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configuration file:</para>
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<programlisting>systemd-tmpfiles --remove --create</programlisting>
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</refsect1>
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<refsect1>
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<title>Exit status</title>
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<para>On success 0 is returned, a non-zero failure
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code otherwise.</para>
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</refsect1>
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<refsect1>
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<title>See Also</title>
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<para>
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<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>tmpfiles.d</refentrytitle><manvolnum>5</manvolnum></citerefentry>
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</para>
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</refsect1>
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</refentry>
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