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<?xml version='1.0'?>
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd">
<!-- SPDX-License-Identifier: LGPL-2.1-or-later -->
<refentry id="sd_bus_reply_method_return"
xmlns:xi="http://www.w3.org/2001/XInclude">
<refentryinfo>
<title>sd_bus_reply_method_return</title>
<productname>systemd</productname>
</refentryinfo>
<refmeta>
<refentrytitle>sd_bus_reply_method_return</refentrytitle>
<manvolnum>3</manvolnum>
</refmeta>
<refnamediv>
<refname>sd_bus_reply_method_return</refname>
<refname>sd_bus_reply_method_returnv</refname>
<refpurpose>Reply to a D-Bus method call</refpurpose>
</refnamediv>
<refsynopsisdiv>
<funcsynopsis>
<funcsynopsisinfo>#include <systemd/sd-bus.h></funcsynopsisinfo>
<funcprototype>
<funcdef>int sd_bus_reply_method_return</funcdef>
<paramdef>sd_bus_message *<parameter>call</parameter></paramdef>
<paramdef>const char *<parameter>types</parameter></paramdef>
<paramdef>...</paramdef>
</funcprototype>
<funcprototype>
<funcdef>int sd_bus_reply_method_returnv</funcdef>
<paramdef>sd_bus_message *<parameter>call</parameter></paramdef>
<paramdef>const char *<parameter>types</parameter></paramdef>
<paramdef>va_list <parameter>ap</parameter></paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para><function>sd_bus_reply_method_return()</function> sends a reply to the
<parameter>call</parameter> message. The type string <parameter>types</parameter> and the
arguments that follow it must adhere to the format described in
<citerefentry><refentrytitle>sd_bus_message_append</refentrytitle><manvolnum>3</manvolnum></citerefentry>.
If no reply is expected to <parameter>call</parameter>, this function succeeds without sending a
reply.</para>
</refsect1>
<refsect1>
<title>Return Value</title>
<para>On success, this function returns a non-negative integer. On failure, it returns a
negative errno-style error code.</para>
<refsect2>
<title>Errors</title>
<para>Returned errors may indicate the following problems:</para>
<variablelist>
<varlistentry>
<term><constant>-EINVAL</constant></term>
<listitem><para>The input parameter <parameter>call</parameter> is
<constant>NULL</constant>.</para>
<para>Message <parameter>call</parameter> is not a method call message.
</para>
<para>Message <parameter>call</parameter> is not attached to a bus.</para>
<para>Message <parameter>m</parameter> is not a method reply message.</para>
<xi:include href="version-info.xml" xpointer="v246"/>
</listitem>
</varlistentry>
<varlistentry>
<term><constant>-EPERM</constant></term>
<listitem><para>Message <parameter>call</parameter> has been sealed.
</para>
<xi:include href="version-info.xml" xpointer="v246"/></listitem>
</varlistentry>
<varlistentry>
<term><constant>-ENOTCONN</constant></term>
<listitem><para>The bus to which message <parameter>call</parameter> is attached is not
connected.</para>
<xi:include href="version-info.xml" xpointer="v246"/></listitem>
</varlistentry>
<varlistentry>
<term><constant>-ENOMEM</constant></term>
<listitem><para>Memory allocation failed.</para>
<xi:include href="version-info.xml" xpointer="v246"/></listitem>
</varlistentry>
</variablelist>
<para>In addition, any error returned by
<citerefentry><refentrytitle>sd_bus_send</refentrytitle><manvolnum>3</manvolnum></citerefentry>
may be returned.</para>
</refsect2>
</refsect1>
<xi:include href="libsystemd-pkgconfig.xml" />
<refsect1>
<title>See Also</title>
<para><simplelist type="inline">
<member><citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry></member>
<member><citerefentry><refentrytitle>sd-bus</refentrytitle><manvolnum>3</manvolnum></citerefentry></member>
<member><citerefentry><refentrytitle>sd_bus_message_new_method_return</refentrytitle><manvolnum>3</manvolnum></citerefentry></member>
</simplelist></para>
</refsect1>
</refentry>
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