87 lines
3.0 KiB
XML
87 lines
3.0 KiB
XML
<?xml version='1.0'?>
|
|
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
|
|
"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
|
|
<!-- SPDX-License-Identifier: LGPL-2.1-or-later -->
|
|
|
|
<refentry id="sd_bus_get_current_handler" xmlns:xi="http://www.w3.org/2001/XInclude">
|
|
|
|
<refentryinfo>
|
|
<title>sd_bus_get_current_handler</title>
|
|
<productname>systemd</productname>
|
|
</refentryinfo>
|
|
|
|
<refmeta>
|
|
<refentrytitle>sd_bus_get_current_handler</refentrytitle>
|
|
<manvolnum>3</manvolnum>
|
|
</refmeta>
|
|
|
|
<refnamediv>
|
|
<refname>sd_bus_get_current_handler</refname>
|
|
<refname>sd_bus_get_current_message</refname>
|
|
<refname>sd_bus_get_current_slot</refname>
|
|
<refname>sd_bus_get_current_userdata</refname>
|
|
|
|
<refpurpose>Query information of the callback a bus object is currently running</refpurpose>
|
|
</refnamediv>
|
|
|
|
<refsynopsisdiv>
|
|
<funcsynopsis>
|
|
<funcsynopsisinfo>#include <systemd/sd-bus.h></funcsynopsisinfo>
|
|
|
|
<xi:include href="sd_bus_add_match.xml" xpointer="sd_bus_message_handler_t"/>
|
|
|
|
<funcprototype>
|
|
<funcdef>sd_bus_message_handler_t <function>sd_bus_get_current_handler</function></funcdef>
|
|
<paramdef>sd_bus *<parameter>bus</parameter></paramdef>
|
|
</funcprototype>
|
|
|
|
<funcprototype>
|
|
<funcdef>sd_bus_message* <function>sd_bus_get_current_message</function></funcdef>
|
|
<paramdef>sd_bus *<parameter>bus</parameter></paramdef>
|
|
</funcprototype>
|
|
|
|
<funcprototype>
|
|
<funcdef>sd_bus_slot* <function>sd_bus_get_current_slot</function></funcdef>
|
|
<paramdef>sd_bus *<parameter>bus</parameter></paramdef>
|
|
</funcprototype>
|
|
|
|
<funcprototype>
|
|
<funcdef>void* <function>sd_bus_get_current_userdata</function></funcdef>
|
|
<paramdef>sd_bus *<parameter>bus</parameter></paramdef>
|
|
</funcprototype>
|
|
</funcsynopsis>
|
|
</refsynopsisdiv>
|
|
|
|
<refsect1>
|
|
<title>Description</title>
|
|
|
|
<para>Whenever sd-bus is about to invoke a user-supplied callback function, it stores the
|
|
current callback, D-Bus message, slot and userdata pointer and allows these to be queried via
|
|
<function>sd_bus_get_current_handler()</function>,
|
|
<function>sd_bus_get_current_message()</function>,
|
|
<function>sd_bus_get_current_slot()</function> and
|
|
<function>sd_bus_get_current_userdata()</function>, respectively. If <parameter>bus</parameter>
|
|
cannot be resolved or if execution does not reside in a user-supplied callback of
|
|
<parameter>bus</parameter>, these functions return <constant>NULL</constant>.</para>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>Return Value</title>
|
|
|
|
<para>On success, these functions return the requested object. On failure, they return
|
|
<constant>NULL</constant>.</para>
|
|
</refsect1>
|
|
|
|
<xi:include href="libsystemd-pkgconfig.xml" />
|
|
|
|
<refsect1>
|
|
<title>See Also</title>
|
|
|
|
<para>
|
|
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
|
|
<citerefentry><refentrytitle>sd-bus</refentrytitle><manvolnum>3</manvolnum></citerefentry>
|
|
</para>
|
|
</refsect1>
|
|
|
|
</refentry>
|