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114 lines
4.2 KiB
XML
114 lines
4.2 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/4.5/docbookx.dtd">
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<!-- SPDX-License-Identifier: LGPL-2.1-or-later -->
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<refentry id="sd_bus_set_method_call_timeout" xmlns:xi="http://www.w3.org/2001/XInclude">
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<refentryinfo>
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<title>sd_bus_set_method_call_timeout</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_method_call_timeout</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_method_call_timeout</refname>
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<refname>sd_bus_get_method_call_timeout</refname>
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<refpurpose>Set or query the default D-Bus method call timeout of a bus 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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<funcprototype>
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<funcdef>int <function>sd_bus_set_method_call_timeout</function></funcdef>
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<paramdef>sd_bus *<parameter>bus</parameter></paramdef>
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<paramdef>uint64_t <parameter>usec</parameter></paramdef>
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</funcprototype>
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<funcprototype>
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<funcdef>int <function>sd_bus_get_method_call_timeout</function></funcdef>
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<paramdef>sd_bus *<parameter>bus</parameter></paramdef>
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<paramdef>uint64_t *<parameter>ret</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_method_call_timeout()</function> sets the default D-Bus method call
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timeout of <parameter>bus</parameter> to <parameter>usec</parameter> microseconds.</para>
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<para><function>sd_bus_get_method_call_timeout()</function> queries the default D-Bus method
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call timeout of <parameter>bus</parameter>. If no method call timeout was set using
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<function>sd_bus_set_method_call_timeout()</function>, the timeout is read from the
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<varname>$SYSTEMD_BUS_TIMEOUT</varname> environment variable. If this environment variable is
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unset or does not contain a valid timeout, the implementation falls back to a predefined method
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call timeout of 25 seconds. Note that <varname>$SYSTEMD_BUS_TIMEOUT</varname> is read once and
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cached so callers should not rely on being able to change the default method call timeout at
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runtime by changing the value of <varname>$SYSTEMD_BUS_TIMEOUT</varname>. Instead, call
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<function>sd_bus_set_method_call_timeout()</function> to change the default method call timeout.
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</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, these functions return a non-negative integer. On failure, they return a
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negative errno-style error code.</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>The parameters <parameter>bus</parameter> or <parameter>ret</parameter>
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are <constant>NULL</constant>.</para>
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<xi:include href="version-info.xml" xpointer="v246"/></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>Bus object <parameter>bus</parameter> could not be resolved.</para>
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<xi:include href="version-info.xml" xpointer="v246"/>
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</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>History</title>
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<para><function>sd_bus_set_method_call_timeout()</function> and
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<function>sd_bus_get_method_call_timeout()</function> were added in version 246.</para>
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</refsect1>
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<refsect1>
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<title>See Also</title>
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<para><simplelist type="inline">
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<member><citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry></member>
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<member><citerefentry><refentrytitle>sd-bus</refentrytitle><manvolnum>3</manvolnum></citerefentry></member>
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<member><citerefentry><refentrytitle>sd_bus_call</refentrytitle><manvolnum>3</manvolnum></citerefentry></member>
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</simplelist></para>
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</refsect1>
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</refentry>
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