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authorZbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>2015-02-03 21:14:13 -0500
committerZbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>2015-02-03 23:11:35 -0500
commit798d3a524ea57aaf40cb53858aaa45ec702f012d (patch)
treef9251ab7878a180d464780d514f3ea8d4599fe6e /man/systemd.path.xml
parent35888b67f77fa7a5cae0973403cb97aa30cad70c (diff)
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diff --git a/man/systemd.path.xml b/man/systemd.path.xml
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--- a/man/systemd.path.xml
+++ b/man/systemd.path.xml
@@ -1,7 +1,7 @@
<?xml version='1.0'?> <!--*-nxml-*-->
<?xml-stylesheet type="text/xsl" href="http://docbook.sourceforge.net/release/xsl/current/xhtml/docbook.xsl"?>
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
- "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
+ "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
<!--
This file is part of systemd.
@@ -23,213 +23,174 @@
-->
<refentry id="systemd.path">
- <refentryinfo>
- <title>systemd.path</title>
- <productname>systemd</productname>
-
- <authorgroup>
- <author>
- <contrib>Developer</contrib>
- <firstname>Lennart</firstname>
- <surname>Poettering</surname>
- <email>lennart@poettering.net</email>
- </author>
- </authorgroup>
- </refentryinfo>
-
- <refmeta>
- <refentrytitle>systemd.path</refentrytitle>
- <manvolnum>5</manvolnum>
- </refmeta>
-
- <refnamediv>
- <refname>systemd.path</refname>
- <refpurpose>Path unit configuration</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <para><filename><replaceable>path</replaceable>.path</filename></para>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Description</title>
-
- <para>A unit configuration file whose name ends in
- <literal>.path</literal> encodes information about
- a path monitored by systemd, for
- path-based activation.</para>
-
- <para>This man page lists the configuration options
- specific to this unit type. See
- <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>
- for the common options of all unit configuration
- files. The common configuration items are configured
- in the generic [Unit] and [Install] sections. The
- path specific configuration options are configured in
- the [Path] section.</para>
-
- <para>For each path file, a matching unit file must
- exist, describing the unit to activate when the path
- changes. By default, a service by the same name as the
- path (except for the suffix) is activated. Example: a
- path file <filename>foo.path</filename> activates a
- matching service <filename>foo.service</filename>. The
- unit to activate may be controlled by
- <varname>Unit=</varname> (see below).</para>
-
- <para>Internally, path units use the
- <citerefentry><refentrytitle>inotify</refentrytitle><manvolnum>7</manvolnum></citerefentry>
- API to monitor file systems. Due to that, it suffers by the
- same limitations as inotify, and for example cannot be
- used to monitor files or directories changed by other
- machines on remote NFS file systems.</para>
-
- <para>If a path unit is beneath another mount
- point in the file system hierarchy, a dependency
- between both units is created automatically.</para>
-
- <para>Unless <varname>DefaultDependencies=false</varname>
- is used, path units will implicitly have dependencies of
- type <varname>Conflicts=</varname> and
- <varname>Before=</varname> on
- <filename>shutdown.target</filename>. These ensure
- that path units are terminated cleanly prior to system
- shutdown. Only path units involved with early boot or
- late system shutdown should disable this option.
- </para>
- </refsect1>
-
- <refsect1>
- <title>Options</title>
-
- <para>Path files must include a [Path] section,
- which carries information about the path(s) it
- monitors. The options specific to the [Path] section
- of path units are the following:</para>
-
- <variablelist class='unit-directives'>
- <varlistentry>
- <term><varname>PathExists=</varname></term>
- <term><varname>PathExistsGlob=</varname></term>
- <term><varname>PathChanged=</varname></term>
- <term><varname>PathModified=</varname></term>
- <term><varname>DirectoryNotEmpty=</varname></term>
-
- <listitem><para>Defines paths to
- monitor for certain changes:
- <varname>PathExists=</varname> may be
- used to watch the mere existence of a
- file or directory. If the file
- specified exists, the configured unit
- is
- activated. <varname>PathExistsGlob=</varname>
- works similar, but checks for the
- existence of at least one file
- matching the globbing pattern
- specified. <varname>PathChanged=</varname>
- may be used to watch a file or
- directory and activate the configured
- unit whenever it changes. It is not
- activated on every write to the
- watched file but it is activated if
- the file which was open for writing
- gets
- closed. <varname>PathModified=</varname>
- is similar, but additionally it is
- activated also on simple writes to the
- watched file.
- <varname>DirectoryNotEmpty=</varname>
- may be used to watch a directory and
- activate the configured unit whenever
- it contains at least one file.</para>
-
- <para>The arguments of these
- directives must be absolute file
- system paths.</para>
-
- <para>Multiple directives may be
- combined, of the same and of different
- types, to watch multiple paths. If the
- empty string is assigned to any of
- these options, the list of paths to
- watch is reset, and any prior
- assignments of these options will not
- have any effect.</para>
-
- <para>If a path already exists
- (in case of
- <varname>PathExists=</varname> and
- <varname>PathExistsGlob=</varname>) or
- a directory already is not empty (in
- case of
- <varname>DirectoryNotEmpty=</varname>)
- at the time the path unit is
- activated, then the configured unit is
- immediately activated as
- well. Something similar does not apply
- to <varname>PathChanged=</varname> and
- <varname>PathModified=</varname>.</para>
-
- <para>If the path itself or any of the
- containing directories are not
- accessible, <command>systemd</command>
- will watch for permission changes and
- notice that conditions are satisfied
- when permissions allow that.
- </para></listitem>
- </varlistentry>
- <varlistentry>
- <term><varname>Unit=</varname></term>
-
- <listitem><para>The unit to activate
- when any of the configured paths
- changes. The argument is a unit name,
- whose suffix is not
- <literal>.path</literal>. If not
- specified, this value defaults to a
- service that has the same name as the
- path unit, except for the suffix. (See
- above.) It is recommended that the
- unit name that is activated and the
- unit name of the path unit are named
- identical, except for the
- suffix.</para></listitem>
- </varlistentry>
- <varlistentry>
- <term><varname>MakeDirectory=</varname></term>
-
- <listitem><para>Takes a boolean
- argument. If true, the directories to
- watch are created before
- watching. This option is ignored for
- <varname>PathExists=</varname>
- settings. Defaults to
- <option>false</option>.</para></listitem>
- </varlistentry>
- <varlistentry>
- <term><varname>DirectoryMode=</varname></term>
-
- <listitem><para>If
- <varname>MakeDirectory=</varname> is
- enabled, use the mode specified here to
- create the directories in
- question. Takes an access mode in
- octal notation. Defaults to
- <option>0755</option>.</para></listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>See Also</title>
- <para>
- <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>inotify</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>systemd.directives</refentrytitle><manvolnum>7</manvolnum></citerefentry>
- </para>
- </refsect1>
+ <refentryinfo>
+ <title>systemd.path</title>
+ <productname>systemd</productname>
+
+ <authorgroup>
+ <author>
+ <contrib>Developer</contrib>
+ <firstname>Lennart</firstname>
+ <surname>Poettering</surname>
+ <email>lennart@poettering.net</email>
+ </author>
+ </authorgroup>
+ </refentryinfo>
+
+ <refmeta>
+ <refentrytitle>systemd.path</refentrytitle>
+ <manvolnum>5</manvolnum>
+ </refmeta>
+
+ <refnamediv>
+ <refname>systemd.path</refname>
+ <refpurpose>Path unit configuration</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <para><filename><replaceable>path</replaceable>.path</filename></para>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>A unit configuration file whose name ends in
+ <literal>.path</literal> encodes information about a path
+ monitored by systemd, for path-based activation.</para>
+
+ <para>This man page lists the configuration options specific to
+ this unit type. See
+ <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>
+ for the common options of all unit configuration files. The common
+ configuration items are configured in the generic [Unit] and
+ [Install] sections. The path specific configuration options are
+ configured in the [Path] section.</para>
+
+ <para>For each path file, a matching unit file must exist,
+ describing the unit to activate when the path changes. By default,
+ a service by the same name as the path (except for the suffix) is
+ activated. Example: a path file <filename>foo.path</filename>
+ activates a matching service <filename>foo.service</filename>. The
+ unit to activate may be controlled by <varname>Unit=</varname>
+ (see below).</para>
+
+ <para>Internally, path units use the
+ <citerefentry><refentrytitle>inotify</refentrytitle><manvolnum>7</manvolnum></citerefentry>
+ API to monitor file systems. Due to that, it suffers by the same
+ limitations as inotify, and for example cannot be used to monitor
+ files or directories changed by other machines on remote NFS file
+ systems.</para>
+
+ <para>If a path unit is beneath another mount point in the file
+ system hierarchy, a dependency between both units is created
+ automatically.</para>
+
+ <para>Unless <varname>DefaultDependencies=false</varname> is used,
+ path units will implicitly have dependencies of type
+ <varname>Conflicts=</varname> and <varname>Before=</varname> on
+ <filename>shutdown.target</filename>. These ensure that path units
+ are terminated cleanly prior to system shutdown. Only path units
+ involved with early boot or late system shutdown should disable
+ this option.
+ </para>
+ </refsect1>
+
+ <refsect1>
+ <title>Options</title>
+
+ <para>Path files must include a [Path] section, which carries
+ information about the path(s) it monitors. The options specific to
+ the [Path] section of path units are the following:</para>
+
+ <variablelist class='unit-directives'>
+ <varlistentry>
+ <term><varname>PathExists=</varname></term>
+ <term><varname>PathExistsGlob=</varname></term>
+ <term><varname>PathChanged=</varname></term>
+ <term><varname>PathModified=</varname></term>
+ <term><varname>DirectoryNotEmpty=</varname></term>
+
+ <listitem><para>Defines paths to monitor for certain changes:
+ <varname>PathExists=</varname> may be used to watch the mere
+ existence of a file or directory. If the file specified
+ exists, the configured unit is activated.
+ <varname>PathExistsGlob=</varname> works similar, but checks
+ for the existence of at least one file matching the globbing
+ pattern specified. <varname>PathChanged=</varname> may be used
+ to watch a file or directory and activate the configured unit
+ whenever it changes. It is not activated on every write to the
+ watched file but it is activated if the file which was open
+ for writing gets closed. <varname>PathModified=</varname> is
+ similar, but additionally it is activated also on simple
+ writes to the watched file.
+ <varname>DirectoryNotEmpty=</varname> may be used to watch a
+ directory and activate the configured unit whenever it
+ contains at least one file.</para>
+
+ <para>The arguments of these directives must be absolute file
+ system paths.</para>
+
+ <para>Multiple directives may be combined, of the same and of
+ different types, to watch multiple paths. If the empty string
+ is assigned to any of these options, the list of paths to
+ watch is reset, and any prior assignments of these options
+ will not have any effect.</para>
+
+ <para>If a path already exists (in case of
+ <varname>PathExists=</varname> and
+ <varname>PathExistsGlob=</varname>) or a directory already is
+ not empty (in case of <varname>DirectoryNotEmpty=</varname>)
+ at the time the path unit is activated, then the configured
+ unit is immediately activated as well. Something similar does
+ not apply to <varname>PathChanged=</varname> and
+ <varname>PathModified=</varname>.</para>
+
+ <para>If the path itself or any of the containing directories
+ are not accessible, <command>systemd</command> will watch for
+ permission changes and notice that conditions are satisfied
+ when permissions allow that. </para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>Unit=</varname></term>
+
+ <listitem><para>The unit to activate when any of the
+ configured paths changes. The argument is a unit name, whose
+ suffix is not <literal>.path</literal>. If not specified, this
+ value defaults to a service that has the same name as the path
+ unit, except for the suffix. (See above.) It is recommended
+ that the unit name that is activated and the unit name of the
+ path unit are named identical, except for the
+ suffix.</para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>MakeDirectory=</varname></term>
+
+ <listitem><para>Takes a boolean argument. If true, the
+ directories to watch are created before watching. This option
+ is ignored for <varname>PathExists=</varname> settings.
+ Defaults to <option>false</option>.</para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>DirectoryMode=</varname></term>
+
+ <listitem><para>If <varname>MakeDirectory=</varname> is
+ enabled, use the mode specified here to create the directories
+ in question. Takes an access mode in octal notation. Defaults
+ to <option>0755</option>.</para></listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>See Also</title>
+ <para>
+ <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>inotify</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>systemd.directives</refentrytitle><manvolnum>7</manvolnum></citerefentry>
+ </para>
+ </refsect1>
</refentry>