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diff --git a/man/libudev.xml b/man/libudev.xml new file mode 100644 index 0000000..684bd47 --- /dev/null +++ b/man/libudev.xml @@ -0,0 +1,99 @@ +<?xml version='1.0'?> <!--*-nxml-*--> +<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//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-or-later --> + +<refentry id="libudev" + xmlns:xi="http://www.w3.org/2001/XInclude"> + + <refentryinfo> + <title>libudev</title> + <productname>systemd</productname> + </refentryinfo> + + <refmeta> + <refentrytitle>libudev</refentrytitle> + <manvolnum>3</manvolnum> + </refmeta> + + <refnamediv> + <refname>libudev</refname> + <refpurpose>API for enumerating and introspecting local devices</refpurpose> + </refnamediv> + + <refsynopsisdiv> + <funcsynopsis> + <funcsynopsisinfo>#include <libudev.h></funcsynopsisinfo> + </funcsynopsis> + + <cmdsynopsis> + <command>pkg-config --cflags --libs libudev</command> + </cmdsynopsis> + </refsynopsisdiv> + + <refsect1> + <title>Description</title> + + <para><filename>libudev.h</filename> provides an API to introspect and enumerate devices on the local + system. This library is supported, but should not be used in new projects. Please see + <citerefentry><refentrytitle>sd-device</refentrytitle><manvolnum>3</manvolnum></citerefentry> for an + equivalent replacement with a more modern API.</para> + + <para>All functions require a libudev context to operate. This + context can be created via + <citerefentry><refentrytitle>udev_new</refentrytitle><manvolnum>3</manvolnum></citerefentry>. + It is used to track library state and link objects together. No + global state is used by libudev, everything is always linked to + a udev context.</para> + + <xi:include href="threads-aware.xml" xpointer="strict"/> + <xi:include href="threads-aware.xml" xpointer="getenv"/> + + <para>To introspect a local device on a system, a udev device + object can be created via + <citerefentry><refentrytitle>udev_device_new_from_syspath</refentrytitle><manvolnum>3</manvolnum></citerefentry> + and friends. The device object allows one to query current state, + read and write attributes and lookup properties of the device in + question.</para> + + <para>To enumerate local devices on the system, an enumeration + object can be created via + <citerefentry><refentrytitle>udev_enumerate_new</refentrytitle><manvolnum>3</manvolnum></citerefentry>.</para> + + <para>To monitor the local system for hotplugged or unplugged + devices, a monitor can be created via + <citerefentry><refentrytitle>udev_monitor_new_from_netlink</refentrytitle><manvolnum>3</manvolnum></citerefentry>.</para> + + <para>Whenever libudev returns a list of objects, the + <citerefentry><refentrytitle>udev_list_entry</refentrytitle><manvolnum>3</manvolnum></citerefentry> + API should be used to iterate, access and modify those lists.</para> + + <para>Furthermore, libudev also exports legacy APIs that should + not be used by new software (and as such are not documented as + part of this manual). This includes the hardware database known + as <constant>udev_hwdb</constant> (please use the new + <citerefentry><refentrytitle>sd-hwdb</refentrytitle><manvolnum>3</manvolnum></citerefentry> + API instead) and the <constant>udev_queue</constant> object to + query the udev daemon (which should not be used by new software + at all).</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_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>, + <citerefentry><refentrytitle>sd-device</refentrytitle><manvolnum>3</manvolnum></citerefentry>, + <citerefentry><refentrytitle>sd-hwdb</refentrytitle><manvolnum>3</manvolnum></citerefentry>, + <citerefentry project='die-net'><refentrytitle>pkg-config</refentrytitle><manvolnum>1</manvolnum></citerefentry> + </para> + </refsect1> + +</refentry> |