<title>Configuration Format</title>
<para>Each configuration file is named in the style of
- <filename><program>.conf</filename>.
- Files in <filename>/etc/</filename> overwrite
- files with the same name in <filename>/usr/lib/</filename>.
- Files in <filename>/run</filename> overwrite 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 <filename>/etc/</filename> are reserved for the local
- administration, which possibly decides to overwrite the
- configurations installed from packages. All files are sorted
- by filename in alphabetical order, regardless in which of the
- directories they reside, to ensure that a specific
- configuration file takes precedence over another file with
- an alphabetically later name.</para>
+ <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
+ <filename>/etc/</filename> are reserved for the local
+ administrator, who may choose to override the
+ configurations installed from packages. The list of
+ 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>
<para>The configuration format is one line per path
- containing action, mode, ownership and age
+ containing action, path, mode, ownership, age and argument
fields:</para>
- <programlisting>Type Path Mode UID GID Age
-d /run/user 0755 root root 10d</programlisting>
+ <programlisting>Type Path Mode UID GID Age Argument
+d /run/user 0755 root root 10d -
+L /tmp/foobar - - - - /dev/null</programlisting>
<refsect2>
<title>Type</title>
<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>
<listitem><para>Create or empty a directory</para></listitem>
</varlistentry>
+ <varlistentry>
+ <term><varname>p</varname></term>
+ <listitem><para>Create a named pipe (FIFO) if it doesn't exist yet</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><varname>L</varname></term>
+ <listitem><para>Create a symlink if it doesn't exist yet</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><varname>c</varname></term>
+ <listitem><para>Create a character device node if it doesn't exist yet</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><varname>b</varname></term>
+ <listitem><para>Create a block device node if it doesn't exist yet</para></listitem>
+ </varlistentry>
+
<varlistentry>
<term><varname>x</varname></term>
<listitem><para>Ignore a path
place of normal path
names.</para></listitem>
</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.
+ </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>
+ </varlistentry>
</variablelist>
</refsect2>
<para>The file access mode to use when
creating this file or directory. If omitted or
when set to - the default is used: 0755 for
- directories, 0644 for files. This parameter is
- ignored for x, r, R lines.</para>
+ directories, 0644 for all other file
+ objects. For z, Z lines if omitted or when set
+ to - the file access mode will not be
+ modified. This parameter is ignored for x, r,
+ R, L lines.</para>
</refsect2>
<refsect2>
or directory. This may either be a numeric
user/group ID or a user or group name. If
omitted or when set to - the default 0 (root)
- is used. . These parameters are ignored for x,
- r, R lines.</para>
+ is used. For z, Z lines when omitted or when set to -
+ the file ownership will not be modified.
+ These parameters are ignored for x, r, R, L lines.</para>
</refsect2>
<refsect2>
is done.</para>
</refsect2>
+ <refsect2>
+ <title>Argument</title>
+
+ <para>For L lines determines the destination
+ 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". 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>
<refsect1>
<title>/etc/tmpfiles.d/screen.conf example</title>
<para><command>screen</command> needs two directories created at boot with specific modes and ownership.</para>
- <programlisting>d /var/run/screens 1777 root root 10d
+ <programlisting>d /var/run/screens 1777 root root 10d
d /var/run/uscreens 0755 root root 10d12h</programlisting>
</example>
</refsect1>
~ianmdlvl / elogind.git / blobdiff