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<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>udev_enumerate_scan_devices</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><style>
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<span style="float:right">systemd 221</span><hr><div class="refentry"><a name="udev_enumerate_scan_devices"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>udev_enumerate_scan_devices, udev_enumerate_scan_subsystems, udev_enumerate_get_list_entry, udev_enumerate_add_syspath, udev_enumerate_get_udev — Query or modify a udev enumerate object</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="funcsynopsis"><pre class="funcsynopsisinfo">#include <libudev.h></pre><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">int <b class="fsfunc">udev_enumerate_scan_devices</b>(</code></td><td>struct udev_enumerate *<var class="pdparam">udev_enumerate</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">int <b class="fsfunc">udev_enumerate_scan_subsystems</b>(</code></td><td>struct udev_enumerate *<var class="pdparam">udev_enumerate</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">struct udev_list_entry *<b class="fsfunc">udev_enumerate_get_list_entry</b>(</code></td><td>struct udev_enumerate *<var class="pdparam">udev_enumerate</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">int <b class="fsfunc">udev_enumerate_add_syspath</b>(</code></td><td>struct udev_enumerate *<var class="pdparam">udev_enumerate</var>, </td></tr><tr><td> </td><td>const char *<var class="pdparam">syspath</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">struct udev *<b class="fsfunc">udev_enumerate_get_udev</b>(</code></td><td>struct udev_enumerate *<var class="pdparam">udev_enumerate</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1"><a name="idm47949586835088"></a><h2 id="Return Value">Return Value<a class="headerlink" title="Permalink to this headline" href="#Return%20Value">¶</a></h2><p>On success,
<code class="function">udev_enumerate_scan_devices()</code>,
<code class="function">udev_enumerate_scan_subsystems()</code> and
<code class="function">udev_enumerate_add_syspath()</code>
return an integer greater than, or equal to,
<code class="constant">0</code>.</p><p>On success,
<code class="function">udev_enumerate_get_list_entry()</code>
returns a pointer to the first entry in the list of found
devices. If the list is empty, or on failure,
<code class="constant">NULL</code> is returned.</p><p><code class="function">udev_enumerate_get_udev()</code> always
returns a pointer to the udev context that this enumerate
object is associated with.</p></div><div class="refsect1"><a name="idm47949586829280"></a><h2 id="See Also">See Also<a class="headerlink" title="Permalink to this headline" href="#See%20Also">¶</a></h2><p>
<a href="udev_new.html"><span class="citerefentry"><span class="refentrytitle">udev_new</span>(3)</span></a>,
<a href="udev_device_new_from_syspath.html"><span class="citerefentry"><span class="refentrytitle">udev_device_new_from_syspath</span>(3)</span></a>,
<a href="udev_enumerate_new.html"><span class="citerefentry"><span class="refentrytitle">udev_enumerate_new</span>(3)</span></a>,
<a href="udev_enumerate_add_match_subsystem.html"><span class="citerefentry"><span class="refentrytitle">udev_enumerate_add_match_subsystem</span>(3)</span></a>,
<a href="udev_monitor_new_from_netlink.html"><span class="citerefentry"><span class="refentrytitle">udev_monitor_new_from_netlink</span>(3)</span></a>,
<a href="udev_list_entry.html"><span class="citerefentry"><span class="refentrytitle">udev_list_entry</span>(3)</span></a>,
<a href="systemd.html"><span class="citerefentry"><span class="refentrytitle">systemd</span>(1)</span></a>,
</p></div></div></body></html>
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