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91 lines
3.2 KiB
XML
91 lines
3.2 KiB
XML
<?xml version='1.0'?>
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
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<!-- SPDX-License-Identifier: LGPL-2.1-or-later -->
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<refentry id="sd_bus_slot_get_bus" xmlns:xi="http://www.w3.org/2001/XInclude">
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<refentryinfo>
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<title>sd_bus_slot_get_bus</title>
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<productname>systemd</productname>
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</refentryinfo>
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<refmeta>
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<refentrytitle>sd_bus_slot_get_bus</refentrytitle>
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<manvolnum>3</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>sd_bus_slot_get_bus</refname>
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<refname>sd_bus_slot_get_current_handler</refname>
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<refname>sd_bus_slot_get_current_message</refname>
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<refname>sd_bus_slot_get_current_userdata</refname>
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<refpurpose>Query information attached to a bus slot object</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<funcsynopsis>
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<funcsynopsisinfo>#include <systemd/sd-bus.h></funcsynopsisinfo>
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<xi:include href="sd_bus_add_match.xml" xpointer="sd_bus_message_handler_t"/>
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<funcprototype>
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<funcdef>sd_bus *<function>sd_bus_slot_get_bus</function></funcdef>
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<paramdef>sd_bus_slot *<parameter>slot</parameter></paramdef>
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</funcprototype>
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<funcprototype>
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<funcdef>sd_bus_message_handler_t <function>sd_bus_slot_get_current_handler</function>
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</funcdef>
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<paramdef>sd_bus_slot *<parameter>slot</parameter></paramdef>
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</funcprototype>
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<funcprototype>
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<funcdef>sd_bus_message *<function>sd_bus_slot_get_current_message</function></funcdef>
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<paramdef>sd_bus_slot *<parameter>slot</parameter></paramdef>
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</funcprototype>
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<funcprototype>
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<funcdef>void *<function>sd_bus_slot_get_current_userdata</function></funcdef>
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<paramdef>sd_bus_slot *<parameter>slot</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para><function>sd_bus_slot_get_bus()</function> returns the bus object that message
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<parameter>slot</parameter> is attached to.</para>
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<para><function>sd_bus_slot_get_current_handler()</function>,
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<function>sd_bus_slot_get_current_message()</function> and
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<function>sd_bus_slot_get_current_userdata()</function> return the current handler, message and
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userdata respectively of the bus <parameter>slot</parameter> is attached to if we're currently
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executing the callback associated with <parameter>slot</parameter>.</para>
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</refsect1>
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<refsect1>
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<title>Return Value</title>
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<para><function>sd_bus_slot_get_bus()</function> always returns the bus object.</para>
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<para>On success, <function>sd_bus_slot_get_current_handler()</function>,
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<function>sd_bus_slot_get_current_message()</function> and
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<function>sd_bus_slot_get_current_userdata()</function> return the requested object. On failure,
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they return <constant>NULL</constant>.</para>
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</refsect1>
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<xi:include href="libsystemd-pkgconfig.xml" />
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<refsect1>
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<title>See Also</title>
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<para>
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<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>sd-bus</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
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</para>
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</refsect1>
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</refentry>
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