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115 lines
4.5 KiB
XML
115 lines
4.5 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_set_exit_on_disconnect"
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xmlns:xi="http://www.w3.org/2001/XInclude">
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<refentryinfo>
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<title>sd_bus_set_exit_on_disconnect</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_set_exit_on_disconnect</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_set_exit_on_disconnect</refname>
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<refname>sd_bus_get_exit_on_disconnect</refname>
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<refpurpose>Control the exit behavior when the bus object disconnects</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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<funcprototype>
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<funcdef>int <function>sd_bus_set_exit_on_disconnect</function></funcdef>
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<paramdef>sd_bus *<parameter>bus</parameter></paramdef>
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<paramdef>int <parameter>b</parameter></paramdef>
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</funcprototype>
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<funcprototype>
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<funcdef>int <function>sd_bus_get_exit_on_disconnect</function></funcdef>
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<paramdef>sd_bus *<parameter>bus</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_set_exit_on_disconnect()</function> may be used to configure the exit
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behavior when the given bus object disconnects. If <parameter>b</parameter> is zero, no special
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logic is executed when the bus object disconnects. If <parameter>b</parameter> is non-zero, the
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behavior on disconnect depends on whether the bus object is attached to an event loop or not. If
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the bus object is attached to an event loop (see
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<citerefentry><refentrytitle>sd_bus_attach_event</refentrytitle><manvolnum>3</manvolnum></citerefentry>),
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the event loop is closed when the bus object disconnects (as if calling
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<citerefentry><refentrytitle>sd_event_exit</refentrytitle><manvolnum>3</manvolnum></citerefentry>).
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Otherwise,
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<citerefentry project='man-pages'><refentrytitle>exit</refentrytitle><manvolnum>3</manvolnum></citerefentry>
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is called. The exit code passed to <function>sd_event_exit()</function> and
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<function>exit()</function> is <constant>EXIT_FAILURE</constant>. If the bus object has already
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disconnected when enabling the exit behavior, the exit behavior is executed immediately. By
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default, the exit behavior is disabled.</para>
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<para><function>sd_bus_get_exit_on_disconnect()</function> returns whether the exit on
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disconnect behavior is enabled for the given bus object.</para>
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</refsect1>
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<refsect1>
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<title>Return Value</title>
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<para>On success, <function>sd_bus_set_exit_on_disconnect()</function> returns a non-negative
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integer. On failure, it returns a negative errno-style error code.</para>
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<para><function>sd_bus_get_exit_on_disconnect()</function> returns a positive integer if the
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exit on disconnect behavior is enabled. Otherwise, it returns zero.</para>
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<refsect2>
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<title>Errors</title>
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<para>Returned errors may indicate the following problems:</para>
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<variablelist>
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<varlistentry>
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<term><constant>-EINVAL</constant></term>
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<listitem><para>A required parameter was <constant>NULL</constant>.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><constant>-ENOPKG</constant></term>
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<listitem><para>The bus object could not be resolved.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><constant>-ECHILD</constant></term>
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<listitem><para>The bus connection was created in a different process.</para></listitem>
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</varlistentry>
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</variablelist>
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</refsect2>
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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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<citerefentry><refentrytitle>sd_bus_attach_event</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>sd-event</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>sd_event_exit</refentrytitle><manvolnum>3</manvolnum></citerefentry>
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</para>
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</refsect1>
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</refentry>
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