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11a1589223
Files which are installed as-is (any .service and other unit files, .conf files, .policy files, etc), are left as is. My assumption is that SPDX identifiers are not yet that well known, so it's better to retain the extended header to avoid any doubt. I also kept any copyright lines. We can probably remove them, but it'd nice to obtain explicit acks from all involved authors before doing that.
101 lines
3.1 KiB
XML
101 lines
3.1 KiB
XML
<?xml version='1.0'?> <!--*- Mode: nxml; nxml-child-indent: 2; indent-tabs-mode: nil -*-->
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
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"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
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<!--
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SPDX-License-Identifier: LGPL-2.1+
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This file is part of systemd.
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Copyright 2016 Julian Orth
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-->
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<refentry id="sd_bus_process">
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<refentryinfo>
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<title>sd_bus_process</title>
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<productname>systemd</productname>
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<authorgroup>
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<author>
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<firstname>Julian</firstname>
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<surname>Orth</surname>
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<email>ju.orth@gmail.com</email>
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</author>
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</authorgroup>
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</refentryinfo>
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<refmeta>
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<refentrytitle>sd_bus_process</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_process</refname>
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<refpurpose>Drive the connection</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_process</function></funcdef>
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<paramdef>sd_bus *<parameter>bus</parameter></paramdef>
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<paramdef>sd_bus_message **<parameter>r</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>
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<function>sd_bus_process()</function> drives the connection between the
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message bus and the client. That is, it handles connecting,
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authentication, and message processing. It should be called in a loop
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until no further progress can be made or an error occurs.
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</para>
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<para>
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Once no further progress can be made,
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<citerefentry><refentrytitle>sd_bus_wait</refentrytitle><manvolnum>3</manvolnum></citerefentry>
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should be called. Alternatively the user can wait for incoming data on
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the file descriptor returned by
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<citerefentry><refentrytitle>sd_bus_get_fd</refentrytitle><manvolnum>3</manvolnum></citerefentry>.
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</para>
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<para>
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<function>sd_bus_process</function> processes at most one incoming
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message per call. If the parameter <parameter>r</parameter> is not NULL
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and the call processed a message, <code>*r</code> is set to this message.
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The caller owns a reference to this message and should call
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<citerefentry><refentrytitle>sd_bus_message_unref</refentrytitle><manvolnum>3</manvolnum></citerefentry>
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when the message is no longer needed. If <parameter>r</parameter> is not
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NULL, progress was made, but no message was processed, <code>*r</code> is
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set to NULL.
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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>
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If progress was made, a positive integer is returned. If no progress was
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made, 0 is returned. If an error occurs, a negative errno-style error code
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is returned.
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</para>
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</refsect1>
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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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