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systemd/man/udev_device_get_syspath.xml
Zbigniew Jędrzejewski-Szmek 11a1589223 tree-wide: drop license boilerplate
Files which are installed as-is (any .service and other unit files, .conf
files, .policy files, etc), are left as is. My assumption is that SPDX
identifiers are not yet that well known, so it's better to retain the
extended header to avoid any doubt.

I also kept any copyright lines. We can probably remove them, but it'd nice to
obtain explicit acks from all involved authors before doing that.
2018-04-06 18:58:55 +02:00

197 lines
7.7 KiB
XML

<?xml version='1.0'?> <!--*-nxml-*-->
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd" [
<!ENTITY % entities SYSTEM "custom-entities.ent" >
%entities;
]>
<!--
SPDX-License-Identifier: LGPL-2.1+
This file is part of systemd.
Copyright 2015 David Herrmann <dh.herrmann@gmail.com>
-->
<refentry id="udev_device_get_syspath"
xmlns:xi="http://www.w3.org/2001/XInclude">
<refentryinfo>
<title>udev_device_get_syspath</title>
<productname>systemd</productname>
<authorgroup>
<author>
<contrib>Developer</contrib>
<firstname>David</firstname>
<surname>Herrmann</surname>
<email>dh.herrmann@gmail.com</email>
</author>
</authorgroup>
</refentryinfo>
<refmeta>
<refentrytitle>udev_device_get_syspath</refentrytitle>
<manvolnum>3</manvolnum>
</refmeta>
<refnamediv>
<refname>udev_device_get_syspath</refname>
<refname>udev_device_get_sysname</refname>
<refname>udev_device_get_sysnum</refname>
<refname>udev_device_get_devpath</refname>
<refname>udev_device_get_devnode</refname>
<refname>udev_device_get_devnum</refname>
<refname>udev_device_get_devtype</refname>
<refname>udev_device_get_subsystem</refname>
<refname>udev_device_get_driver</refname>
<refname>udev_device_get_udev</refname>
<refname>udev_device_get_parent</refname>
<refname>udev_device_get_parent_with_subsystem_devtype</refname>
<refname>udev_device_get_is_initialized</refname>
<refname>udev_device_get_action</refname>
<refpurpose>Query device properties</refpurpose>
</refnamediv>
<refsynopsisdiv>
<funcsynopsis>
<funcsynopsisinfo>#include &lt;libudev.h&gt;</funcsynopsisinfo>
<funcprototype>
<funcdef>const char *<function>udev_device_get_syspath</function></funcdef>
<paramdef>struct udev_device *<parameter>udev_device</parameter></paramdef>
</funcprototype>
<funcprototype>
<funcdef>const char *<function>udev_device_get_sysname</function></funcdef>
<paramdef>struct udev_device *<parameter>udev_device</parameter></paramdef>
</funcprototype>
<funcprototype>
<funcdef>const char *<function>udev_device_get_sysnum</function></funcdef>
<paramdef>struct udev_device *<parameter>udev_device</parameter></paramdef>
</funcprototype>
<funcprototype>
<funcdef>const char *<function>udev_device_get_devpath</function></funcdef>
<paramdef>struct udev_device *<parameter>udev_device</parameter></paramdef>
</funcprototype>
<funcprototype>
<funcdef>const char *<function>udev_device_get_devnode</function></funcdef>
<paramdef>struct udev_device *<parameter>udev_device</parameter></paramdef>
</funcprototype>
<funcprototype>
<funcdef>dev_t <function>udev_device_get_devnum</function></funcdef>
<paramdef>struct udev_device *<parameter>udev_device</parameter></paramdef>
</funcprototype>
<funcprototype>
<funcdef>const char *<function>udev_device_get_devtype</function></funcdef>
<paramdef>struct udev_device *<parameter>udev_device</parameter></paramdef>
</funcprototype>
<funcprototype>
<funcdef>const char *<function>udev_device_get_subsystem</function></funcdef>
<paramdef>struct udev_device *<parameter>udev_device</parameter></paramdef>
</funcprototype>
<funcprototype>
<funcdef>const char *<function>udev_device_get_driver</function></funcdef>
<paramdef>struct udev_device *<parameter>udev_device</parameter></paramdef>
</funcprototype>
<funcprototype>
<funcdef>struct udev *<function>udev_device_get_udev</function></funcdef>
<paramdef>struct udev_device *<parameter>udev_device</parameter></paramdef>
</funcprototype>
<funcprototype>
<funcdef>struct udev_device *<function>udev_device_get_parent</function></funcdef>
<paramdef>struct udev_device *<parameter>udev_device</parameter></paramdef>
</funcprototype>
<funcprototype>
<funcdef>struct udev_device *<function>udev_device_get_parent_with_subsystem_devtype</function></funcdef>
<paramdef>struct udev_device *<parameter>udev_device</parameter></paramdef>
<paramdef>const char *<parameter>subsystem</parameter></paramdef>
<paramdef>const char *<parameter>devtype</parameter></paramdef>
</funcprototype>
<funcprototype>
<funcdef>int <function>udev_device_get_is_initialized</function></funcdef>
<paramdef>struct udev_device *<parameter>udev_device</parameter></paramdef>
</funcprototype>
<funcprototype>
<funcdef>const char *<function>udev_device_get_action</function></funcdef>
<paramdef>struct udev_device *<parameter>udev_device</parameter></paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<!--<refsect1>
<title>Description</title>
<para>XXX: Add documentation.</para>
</refsect1>-->
<refsect1>
<title>Return Value</title>
<para>On success, <function>udev_device_get_syspath()</function>,
<function>udev_device_get_sysname()</function>,
<function>udev_device_get_sysnum()</function>,
<function>udev_device_get_devpath()</function>,
<function>udev_device_get_devnode()</function>,
<function>udev_device_get_devtype()</function>,
<function>udev_device_get_subsystem()</function>,
<function>udev_device_get_driver()</function> and
<function>udev_device_get_action()</function> return a pointer
to a constant string that describes the requested property. The
lifetime of this string is bound to the device it was requested
on. On failure, each function may return
<constant>NULL</constant>.</para>
<para>On success, <function>udev_device_get_devnum()</function>
returns the device type of the passed device. On failure, a
device type with minor and major number set to
<constant>0</constant> is returned.</para>
<para><function>udev_device_get_udev()</function> always returns
a valid pointer to the udev context that this device belongs
to.</para>
<para>On success, <function>udev_device_get_parent()</function>
and
<function>udev_device_get_parent_with_subsystem_devtype()</function>
return a pointer to the parent device. No additional reference
to this device is acquired, but the child device owns a reference
to such a parent device. On failure, <constant>NULL</constant>
is returned.</para>
<para>On success, <function>udev_device_get_is_initialized()</function> returns either <constant>1</constant> or
<constant>0</constant>, depending on whether the passed device has already been initialized by udev or not. On
failure, a negative error code is returned. Note that devices for which no udev rules are defined are never
reported initialized.</para>
</refsect1>
<refsect1>
<title>See Also</title>
<para>
<citerefentry><refentrytitle>udev_new</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>udev_device_new_from_syspath</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>udev_device_has_tag</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>udev_enumerate_new</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>udev_monitor_new_from_netlink</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>udev_list_entry</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
</para>
</refsect1>
</refentry>