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systemd/man/udev_enumerate_new.xml
2023-12-25 15:51:47 +01:00

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<?xml version='1.0'?> <!--*-nxml-*-->
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
<!ENTITY % entities SYSTEM "custom-entities.ent" >
%entities;
]>
<!-- SPDX-License-Identifier: LGPL-2.1-or-later -->
<refentry id="udev_enumerate_new"
xmlns:xi="http://www.w3.org/2001/XInclude">
<refentryinfo>
<title>udev_enumerate_new</title>
<productname>systemd</productname>
</refentryinfo>
<refmeta>
<refentrytitle>udev_enumerate_new</refentrytitle>
<manvolnum>3</manvolnum>
</refmeta>
<refnamediv>
<refname>udev_enumerate_new</refname>
<refname>udev_enumerate_ref</refname>
<refname>udev_enumerate_unref</refname>
<refpurpose>Create, acquire and release a udev enumerate object</refpurpose>
</refnamediv>
<refsynopsisdiv>
<funcsynopsis>
<funcsynopsisinfo>#include &lt;libudev.h&gt;</funcsynopsisinfo>
<funcprototype>
<funcdef>struct udev_enumerate *<function>udev_enumerate_new</function></funcdef>
<paramdef>struct udev *<parameter>udev</parameter></paramdef>
</funcprototype>
<funcprototype>
<funcdef>struct udev_enumerate *<function>udev_enumerate_ref</function></funcdef>
<paramdef>struct udev_enumerate *<parameter>udev_enumerate</parameter></paramdef>
</funcprototype>
<funcprototype>
<funcdef>struct udev_enumerate *<function>udev_enumerate_unref</function></funcdef>
<paramdef>struct udev_enumerate *<parameter>udev_enumerate</parameter></paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<!--<refsect1>
<title>Description</title>
<para>XXX: Add short description.</para>
</refsect1>-->
<refsect1>
<title>Return Value</title>
<para>On success, <function>udev_enumerate_new()</function> returns a
pointer to the allocated enumeration object. On failure,
<constant>NULL</constant> is returned.
<function>udev_enumerate_ref()</function> returns the argument
that it was passed, unmodified.
<function>udev_enumerate_unref()</function> always returns
<constant>NULL</constant>.</para>
</refsect1>
<refsect1>
<title>History</title>
<para><function>udev_enumerate_new()</function>,
<function>udev_enumerate_ref()</function>, and
<function>udev_enumerate_unref()</function> were added in version 221.</para>
</refsect1>
<refsect1>
<title>See Also</title>
<para><simplelist type="inline">
<member><citerefentry><refentrytitle>udev_new</refentrytitle><manvolnum>3</manvolnum></citerefentry></member>
<member><citerefentry><refentrytitle>udev_device_new_from_syspath</refentrytitle><manvolnum>3</manvolnum></citerefentry></member>
<member><citerefentry><refentrytitle>udev_enumerate_add_match_subsystem</refentrytitle><manvolnum>3</manvolnum></citerefentry></member>
<member><citerefentry><refentrytitle>udev_enumerate_scan_devices</refentrytitle><manvolnum>3</manvolnum></citerefentry></member>
<member><citerefentry><refentrytitle>udev_monitor_new_from_netlink</refentrytitle><manvolnum>3</manvolnum></citerefentry></member>
<member><citerefentry><refentrytitle>udev_list_entry</refentrytitle><manvolnum>3</manvolnum></citerefentry></member>
<member><citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry></member>
</simplelist></para>
</refsect1>
</refentry>