Copyright 2010 Brandon Philips
systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ 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
- General Public License for more details.
+ Lesser General Public License for more details.
- You should have received a copy of the GNU General Public License
+ 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="tmpfiles.d">
</refnamediv>
<refsynopsisdiv>
- <para><filename>/usr/lib/tmpfiles.d/*.conf</filename></para>
<para><filename>/etc/tmpfiles.d/*.conf</filename></para>
<para><filename>/run/tmpfiles.d/*.conf</filename></para>
+ <para><filename>/usr/lib/tmpfiles.d/*.conf</filename></para>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
- <para><command>systemd-tmpfiles</command> uses the
- configuration files from the above directories to describe the
- creation, cleaning and removal of volatile and
- temporary files and directories which usually reside
- in directories such as <filename>/run</filename>
- or <filename>/tmp</filename>.</para>
+
<para><command>systemd-tmpfiles</command> uses the
+ configuration files from the above directories to describe the
+ creation, cleaning and removal of volatile and
+ temporary files and directories which usually reside
+ in directories such as <filename>/run</filename>
+ or <filename>/tmp</filename>.</para>
</refsect1>
<refsect1>
- <title>Configuration Format</title>
-
- <para>Each configuration file is named in the style of
- <filename><program>.conf</filename>. Files in
- <filename>/etc/</filename> override files with the
- same name in <filename>/usr/lib/</filename>. Files in
- <filename>/run</filename> override files with the same
- name in <filename>/etc/</filename> and
- <filename>/usr/lib/</filename>. Packages should
- install their configuration files in
- <filename>/usr/lib/</filename>, files in
+ <title>Configuration Format</title>
+
+ <para>Each configuration file shall be named in the
+ style of <filename><program>.conf</filename>.
+ Files in <filename>/etc/</filename> override files
+ with the same name in <filename>/usr/lib/</filename>
+ and <filename>/run/</filename>. Files in
+ <filename>/run/</filename> override files with the same
+ name in <filename>/usr/lib/</filename>. Packages
+ should install their configuration files in
+ <filename>/usr/lib/</filename>. Files in
<filename>/etc/</filename> are reserved for the local
- administrator, who may choose to override the
- configurations installed from packages. The list of
+ administrator, who may use this logic to override the
+ configuration files installed by vendor packages. All
configuration files are sorted by their filename in
alphabetical order, regardless in which of the
- directories they reside, to guarantee that a
- configuration file takes precedence over another
- configuration file with an alphabetically later
- name.</para>
+ directories they reside, to guarantee that a specific
+ configuration file takes precedence over another file
+ with an alphabetically later name</para>
- <para>The configuration format is one line per path
- containing action, path, mode, ownership, age and argument
- fields:</para>
+ <para>If the administrator wants to disable a
+ configuration file supplied by the vendor the
+ recommended way is to place a symlink to
+ <filename>/dev/null</filename> in
+ <filename>/etc/tmpfiles.d/</filename> bearing the
+ same file name.</para>
+
+ <para>The configuration format is one line per path
+ containing action, path, mode, ownership, age and argument
+ fields:</para>
<programlisting>Type Path Mode UID GID Age Argument
d /run/user 0755 root root 10d -
<variablelist>
<varlistentry>
<term><varname>f</varname></term>
- <listitem><para>Create a file if it doesn't exist yet</para></listitem>
+ <listitem><para>Create a file if it doesn't exist yet (optionally writing a short string into it, if the argument parameter is passed)</para></listitem>
</varlistentry>
<varlistentry>
<term><varname>F</varname></term>
- <listitem><para>Create or truncate a file</para></listitem>
+ <listitem><para>Create or truncate a file (optionally writing a short string into it, if the argument parameter is passed)</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><varname>w</varname></term>
+ <listitem><para>Write the argument parameter to a file, if it exists.</para></listitem>
</varlistentry>
<varlistentry>
<varlistentry>
<term><varname>z</varname></term>
- <listitem><para>Set ownership, access
- mode and relabel security context of
- a file or directory if it exists.
- Lines of this type accept shell-style
- globs in place of normal path names.
+ <listitem><para>Restore
+ SELinux security context label
+ and set ownership and access
+ mode of a file or directory if
+ it exists. Lines of this type
+ accept shell-style globs in
+ place of normal path names.
</para></listitem>
</varlistentry>
<varlistentry>
<term><varname>Z</varname></term>
- <listitem><para>Recursively set
- ownership, access mode and relabel
- security context of a path and
- all its subdirectories (if it is a
- directory). Lines of this type accept
- shell-style globs in place of normal
- path names.</para></listitem>
+ <listitem><para>Recursively
+ restore SELinux security
+ context label and set
+ ownership and access mode of a
+ path and all its
+ subdirectories (if it is a
+ directory). Lines of this type
+ accept shell-style globs in
+ place of normal path
+ names.</para></listitem>
</varlistentry>
</variablelist>
</refsect2>
<para>The age field only applies to lines starting with
d, D and x. If omitted or set to - no automatic clean-up
is done.</para>
+
+ <para>If the age field starts with a tilde
+ character (~) the clean-up is only applied to
+ files and directories one level inside the
+ directory specified, but not the files and
+ directories immediately inside it.</para>
</refsect2>
<refsect2>
path of the symlink. For c, b determines the
major/minor of the device node, with major and
minor formatted as integers, separated by :,
- e.g. "1:3". Ignored for all other lines.</para>
+ e.g. "1:3". For f, F, w may be used to specify
+ a short string that is written to the file,
+ suffixed by a newline. Ignored for all other
+ lines.</para>
</refsect2>
</refsect1>
~ianmdlvl / elogind.git / blobdiff