<filename>/usr/lib/tmpfiles.d</filename> and <filename>/run/tmpfiles.d</filename>. Files in
<filename>/run/tmpfiles.d</filename> override files with the same name in
<filename>/usr/lib/tmpfiles.d</filename>. Packages should install their configuration files in
- <filename>/usr/lib/tmpfiles.d</filename>. Files in <filename>/etc/tmpfiles.d</filename> are reserved for the local
- administrator, who may use this logic to override the configuration files installed by vendor packages. All
- configuration files are sorted by their filename in lexicographic order, regardless of which of the directories
- they reside in. If multiple files specify the same path, the entry in the file with the lexicographically earliest
- name will be applied. All other conflicting entries will be logged as errors. When two lines are prefix path and
- suffix path of each other, then the prefix line is always created first, the suffix later (and if removal applies
- to the line, the order is reversed: the suffix is removed first, the prefix later). Lines that take globs are
- applied after those accepting no globs. If multiple operations shall be applied on the same file (such as ACL,
- xattr, file attribute adjustments), these are always done in the same fixed order. Except for those cases, the
- files/directories are processed in the order they are listed.</para>
+ <filename>/usr/lib/tmpfiles.d</filename>. Files in <filename>/etc/tmpfiles.d</filename> are reserved for
+ the local administrator, who may use this logic to override the configuration files installed by vendor
+ packages. All configuration files are sorted by their filename in lexicographic order, regardless of
+ which of the directories they reside in. If multiple files specify the same path, the entry in the file
+ with the lexicographically earliest name will be applied (note that lines suppressed due to the
+ <literal>!</literal> are filtered before application, meaning that if an early line carries the
+ exclamation mark and is suppressed because of that, a later line matching in path will be applied). All
+ other conflicting entries will be logged as errors. When two lines are prefix path and suffix path of
+ each other, then the prefix line is always created first, the suffix later (and if removal applies to the
+ line, the order is reversed: the suffix is removed first, the prefix later). Lines that take globs are
+ applied after those accepting no globs. If multiple operations shall be applied on the same file (such as
+ ACL, xattr, file attribute adjustments), these are always done in the same fixed order. Except for those
+ cases, the files/directories are processed in the order they are listed.</para>
<para>If the administrator wants to disable a configuration file
supplied by the vendor, the recommended way is to place a symlink
<refsect2>
<title>Type</title>
- <para>The type consists of a single letter and optionally an
- exclamation mark and/or minus sign.</para>
+ <para>The type consists of a single letter and optionally an exclamation mark (<literal>!</literal>)
+ and/or minus sign (<literal>-</literal>).</para>
<para>The following line types are understood:</para>
</varlistentry>
</variablelist>
- <para>If the exclamation mark is used, this line is only safe to
- execute during boot, and can break a running system. Lines
- without the exclamation mark are presumed to be safe to execute
- at any time, e.g. on package upgrades.
- <command>systemd-tmpfiles</command> will execute line with an
- exclamation mark only if option <option>--boot</option> is
- given.</para>
+ <para>If the exclamation mark (<literal>!</literal>) is used, this line is only safe to execute during
+ boot, and can break a running system. Lines without the exclamation mark are presumed to be safe to
+ execute at any time, e.g. on package upgrades. <command>systemd-tmpfiles</command> will take lines with
+ an exclamation mark only into consideration, if the <option>--boot</option> option is given.</para>
<para>For example:
<programlisting># Make sure these are created by default so that nobody else can
running system, and will only be executed with
<option>--boot</option>.</para>
- <para>If the minus sign is used, this line failing to run
- successfully during create (and only create) will not cause
- the execution of <command>systemd-tmpfiles</command> to return
+ <para>If the minus sign (<literal>-</literal>) is used, this line failing to run successfully during
+ create (and only create) will not cause the execution of <command>systemd-tmpfiles</command> to return
an error.</para>
<para>For example:
<para>Specifiers can be used in the "path" and "argument" fields.
An unknown or unresolvable specifier is treated as invalid configuration.
The following expansions are understood:</para>
- <table>
+ <table class='specifiers'>
<title>Specifiers available</title>
<tgroup cols='3' align='left' colsep='1' rowsep='1'>
<colspec colname="spec" />
</thead>
<tbody>
<xi:include href="standard-specifiers.xml" xpointer="a"/>
- <row>
- <entry><literal>%b</literal></entry>
- <entry>Boot ID</entry>
- <entry>The boot ID of the running system, formatted as string. See <citerefentry><refentrytitle>random</refentrytitle><manvolnum>4</manvolnum></citerefentry> for more information.</entry>
- </row>
+ <xi:include href="standard-specifiers.xml" xpointer="b"/>
<xi:include href="standard-specifiers.xml" xpointer="B"/>
<row>
<entry><literal>%C</literal></entry>
<entry>User home directory</entry>
<entry>This is the home directory of the user running the command. In case of the system instance this resolves to <literal>/root</literal>.</entry>
</row>
- <row>
- <entry><literal>%H</literal></entry>
- <entry>Host name</entry>
- <entry>The hostname of the running system.</entry>
- </row>
+ <xi:include href="standard-specifiers.xml" xpointer="H"/>
+ <xi:include href="standard-specifiers.xml" xpointer="l"/>
<row>
<entry><literal>%L</literal></entry>
<entry>System or user log directory</entry>
<entry>In <option>--user</option> mode, this is the same as <varname>$XDG_CONFIG_HOME</varname> with <filename index="false">/log</filename> appended, and <filename>/var/log</filename> otherwise.</entry>
</row>
- <row>
- <entry><literal>%m</literal></entry>
- <entry>Machine ID</entry>
- <entry>The machine ID of the running system, formatted as string. See <citerefentry><refentrytitle>machine-id</refentrytitle><manvolnum>5</manvolnum></citerefentry> for more information.</entry>
- </row>
+ <xi:include href="standard-specifiers.xml" xpointer="m"/>
<xi:include href="standard-specifiers.xml" xpointer="o"/>
<row>
<entry><literal>%S</literal></entry>
<entry>User UID</entry>
<entry>This is the numeric UID of the user running the command. In case of the system instance this resolves to <constant>0</constant>.</entry>
</row>
- <row>
- <entry><literal>%v</literal></entry>
- <entry>Kernel release</entry>
- <entry>Identical to <command>uname -r</command> output.</entry>
- </row>
+ <xi:include href="standard-specifiers.xml" xpointer="v"/>
<row>
<entry><literal>%V</literal></entry>
<entry>Directory for larger and persistent temporary files</entry>
</row>
<xi:include href="standard-specifiers.xml" xpointer="w"/>
<xi:include href="standard-specifiers.xml" xpointer="W"/>
- <row>
- <entry><literal>%%</literal></entry>
- <entry>Escaped <literal>%</literal></entry>
- <entry>Single percent sign.</entry>
- </row>
+ <xi:include href="standard-specifiers.xml" xpointer="percent"/>
</tbody>
</tgroup>
</table>
projects / thirdparty / systemd.git / blobdiff