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diff --git a/man/udev.html b/man/udev.html index c5219aa894..71db3091bf 100644 --- a/man/udev.html +++ b/man/udev.html @@ -18,8 +18,8 @@ </style><a href="index.html">Index </a>· <a href="systemd.directives.html">Directives </a>· <a href="../python-systemd/index.html">Python </a>· - <a href="../libudev/index.html">libudev </a>· - <a href="../libudev/index.html">gudev </a><span style="float:right">systemd 220</span><hr><div class="refentry"><a name="udev"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>udev — Dynamic device management</p></div><div class="refsect1"><a name="idm140480105830960"></a><h2 id="Description">Description<a class="headerlink" title="Permalink to this headline" href="#Description">¶</a></h2><p>udev supplies the system software with device events, manages permissions + + <span style="float:right">systemd 221</span><hr><div class="refentry"><a name="udev"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>udev — Dynamic device management</p></div><div class="refsect1"><a name="idm47484960953760"></a><h2 id="Description">Description<a class="headerlink" title="Permalink to this headline" href="#Description">¶</a></h2><p>udev supplies the system software with device events, manages permissions of device nodes and may create additional symlinks in the <code class="filename">/dev</code> directory, or renames network interfaces. The kernel usually just assigns unpredictable device names based on the order of discovery. Meaningful symlinks or network device @@ -31,7 +31,7 @@ provide additional device information to be stored in the udev database or to be used to create meaningful symlink names.</p><p>All device information udev processes is stored in the udev database and sent out to possible event subscribers. Access to all stored data and the event - sources is provided by the library libudev.</p></div><div class="refsect1"><a name="idm140480105826368"></a><h2 id="Rules Files">Rules Files<a class="headerlink" title="Permalink to this headline" href="#Rules%20Files">¶</a></h2><p>The udev rules are read from the files located in the + sources is provided by the library libudev.</p></div><div class="refsect1"><a name="idm47484956043552"></a><h2 id="Rules Files">Rules Files<a class="headerlink" title="Permalink to this headline" href="#Rules%20Files">¶</a></h2><p>The udev rules are read from the files located in the system rules directory <code class="filename">/usr/lib/udev/rules.d</code>, the volatile runtime directory <code class="filename">/run/udev/rules.d</code> and the local administration directory <code class="filename">/etc/udev/rules.d</code>. @@ -127,7 +127,8 @@ this or a dependent device.</p><p>Starting daemons or other long-running processes is not appropriate for udev; the forked processes, detached or not, will be unconditionally killed after the event handling has finished.</p></dd><dt id="LABEL"><span class="term"><code class="varname">LABEL</code></span><a class="headerlink" title="Permalink to this term" href="#LABEL">¶</a></dt><dd><p>A named label to which a <code class="varname">GOTO</code> may jump.</p></dd><dt id="GOTO"><span class="term"><code class="varname">GOTO</code></span><a class="headerlink" title="Permalink to this term" href="#GOTO">¶</a></dt><dd><p>Jumps to the next <code class="varname">LABEL</code> with a matching name.</p></dd><dt id="IMPORT{type}"><span class="term"><code class="varname">IMPORT{<em class="replaceable"><code>type</code></em>}</code></span><a class="headerlink" title="Permalink to this term" href="#IMPORT%7Btype%7D">¶</a></dt><dd><p>Import a set of variables as device properties, - depending on "<code class="literal">type</code>":</p><div class="variablelist"><dl class="variablelist"><dt id="program"><span class="term">"<code class="literal">program</code>"</span><a class="headerlink" title="Permalink to this term" href="#program">¶</a></dt><dd><p>Execute an external program specified as the assigned value and + depending on "<code class="literal">type</code>":</p><div class="variablelist"><dl class="variablelist"><dt id="program"><span class="term">"<code class="literal">program</code>"</span><a class="headerlink" title="Permalink to this term" href="#program">¶</a></dt><dd><p>Execute an external program specified as the assigned + value and if it returns successfully import its output, which must be in environment key format. Path specification, command/argument separation, and quoting work like in <code class="varname">RUN</code>.</p></dd><dt id="builtin"><span class="term">"<code class="literal">builtin</code>"</span><a class="headerlink" title="Permalink to this term" href="#builtin">¶</a></dt><dd><p>Similar to "<code class="literal">program</code>", but use one of the @@ -188,7 +189,7 @@ If the number is followed by the "<code class="literal">+</code>" character, this part plus all remaining parts of the result string are substituted: "<code class="literal">%c{N+}</code>".</p></dd><dt id="$parent, %P"><span class="term"><code class="option">$parent</code>, <code class="option">%P</code></span><a class="headerlink" title="Permalink to this term" href="#%24parent,%20%P">¶</a></dt><dd><p>The node name of the parent device.</p></dd><dt id="$name"><span class="term"><code class="option">$name</code></span><a class="headerlink" title="Permalink to this term" href="#%24name">¶</a></dt><dd><p>The current name of the device. If not changed by a rule, it is the name of the kernel device.</p></dd><dt id="$links"><span class="term"><code class="option">$links</code></span><a class="headerlink" title="Permalink to this term" href="#%24links">¶</a></dt><dd><p>A space-separated list of the current symlinks. The value is - only set during a remove event or if an earlier rule assigned a value.</p></dd><dt id="$root, %r"><span class="term"><code class="option">$root</code>, <code class="option">%r</code></span><a class="headerlink" title="Permalink to this term" href="#%24root,%20%r">¶</a></dt><dd><p>The udev_root value.</p></dd><dt id="$sys, %S"><span class="term"><code class="option">$sys</code>, <code class="option">%S</code></span><a class="headerlink" title="Permalink to this term" href="#%24sys,%20%S">¶</a></dt><dd><p>The sysfs mount point.</p></dd><dt id="$devnode, %N"><span class="term"><code class="option">$devnode</code>, <code class="option">%N</code></span><a class="headerlink" title="Permalink to this term" href="#%24devnode,%20%N">¶</a></dt><dd><p>The name of the device node.</p></dd><dt id="%%"><span class="term"><code class="option">%%</code></span><a class="headerlink" title="Permalink to this term" href="#%%">¶</a></dt><dd><p>The "<code class="literal">%</code>" character itself.</p></dd><dt id="$$"><span class="term"><code class="option">$$</code></span><a class="headerlink" title="Permalink to this term" href="#%24%24">¶</a></dt><dd><p>The "<code class="literal">$</code>" character itself.</p></dd></dl></div></div><div class="refsect1"><a name="idm140480100728384"></a><h2 id="See Also">See Also<a class="headerlink" title="Permalink to this headline" href="#See%20Also">¶</a></h2><p> + only set during a remove event or if an earlier rule assigned a value.</p></dd><dt id="$root, %r"><span class="term"><code class="option">$root</code>, <code class="option">%r</code></span><a class="headerlink" title="Permalink to this term" href="#%24root,%20%r">¶</a></dt><dd><p>The udev_root value.</p></dd><dt id="$sys, %S"><span class="term"><code class="option">$sys</code>, <code class="option">%S</code></span><a class="headerlink" title="Permalink to this term" href="#%24sys,%20%S">¶</a></dt><dd><p>The sysfs mount point.</p></dd><dt id="$devnode, %N"><span class="term"><code class="option">$devnode</code>, <code class="option">%N</code></span><a class="headerlink" title="Permalink to this term" href="#%24devnode,%20%N">¶</a></dt><dd><p>The name of the device node.</p></dd><dt id="%%"><span class="term"><code class="option">%%</code></span><a class="headerlink" title="Permalink to this term" href="#%%">¶</a></dt><dd><p>The "<code class="literal">%</code>" character itself.</p></dd><dt id="$$"><span class="term"><code class="option">$$</code></span><a class="headerlink" title="Permalink to this term" href="#%24%24">¶</a></dt><dd><p>The "<code class="literal">$</code>" character itself.</p></dd></dl></div></div><div class="refsect1"><a name="idm47484955843392"></a><h2 id="See Also">See Also<a class="headerlink" title="Permalink to this headline" href="#See%20Also">¶</a></h2><p> <a href="systemd-udevd.service.html"><span class="citerefentry"><span class="refentrytitle">systemd-udevd.service</span>(8)</span></a>, <a href="udevadm.html"><span class="citerefentry"><span class="refentrytitle">udevadm</span>(8)</span></a>, <a href="systemd.link.html"><span class="citerefentry"><span class="refentrytitle">systemd.link</span>(5)</span></a> |