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sd-bus: Add sd_bus_get_current_* docs

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Daan De Meyer 2020-04-19 22:06:38 +02:00 committed by Zbigniew Jędrzejewski-Szmek
parent ad30002885
commit db5328e931
3 changed files with 95 additions and 0 deletions
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6
man/rules/meson.build
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@ -249,6 +249,12 @@ manpages = [
'3',
['SD_BUS_ERROR_END', 'SD_BUS_ERROR_MAP', 'sd_bus_error_map'],
''],
['sd_bus_get_current_handler',
'3',
['sd_bus_get_current_message',
'sd_bus_get_current_slot',
'sd_bus_get_current_userdata'],
''],
['sd_bus_get_fd',
'3',
['sd_bus_get_events', 'sd_bus_get_timeout', 'sd_bus_set_fd'],

4
man/sd-bus.xml
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@ -72,6 +72,10 @@
<citerefentry><refentrytitle>sd_bus_error_add_map</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd_bus_get_address</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd_bus_get_bus_id</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd_bus_get_current_handler</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd_bus_get_current_message</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd_bus_get_current_slot</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd_bus_get_current_userdata</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd_bus_get_fd</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd_bus_get_method_call_timeout</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd_bus_get_n_queued_read</refentrytitle><manvolnum>3</manvolnum></citerefentry>,

85
man/sd_bus_get_current_handler.xml Normal file
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@ -0,0 +1,85 @@
<?xml version='1.0'?>
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
<!-- SPDX-License-Identifier: LGPL-2.1+ -->
<refentry id="sd_bus_get_current_handler" xmlns:xi="http://www.w3.org/2001/XInclude">
<refentryinfo>
<title>sd_bus_get_current_handler</title>
<productname>systemd</productname>
</refentryinfo>
<refmeta>
<refentrytitle>sd_bus_get_current_handler</refentrytitle>
<manvolnum>3</manvolnum>
</refmeta>
<refnamediv>
<refname>sd_bus_get_current_handler</refname>
<refname>sd_bus_get_current_message</refname>
<refname>sd_bus_get_current_slot</refname>
<refname>sd_bus_get_current_userdata</refname>
<refpurpose>Query information of the callback a bus object is currently running</refpurpose>
</refnamediv>
<refsynopsisdiv>
<funcsynopsis>
<funcsynopsisinfo>#include &lt;systemd/sd-bus.h&gt;</funcsynopsisinfo>
<funcprototype>
<funcdef>sd_bus_message_handler_t <function>sd_bus_get_current_handler</function></funcdef>
<paramdef>sd_bus *<parameter>bus</parameter></paramdef>
</funcprototype>
<funcprototype>
<funcdef>sd_bus_message* <function>sd_bus_get_current_message</function></funcdef>
<paramdef>sd_bus *<parameter>bus</parameter></paramdef>
</funcprototype>
<funcprototype>
<funcdef>sd_bus_slot* <function>sd_bus_get_current_slot</function></funcdef>
<paramdef>sd_bus *<parameter>bus</parameter></paramdef>
</funcprototype>
<funcprototype>
<funcdef>void* <function>sd_bus_get_current_userdata</function></funcdef>
<paramdef>sd_bus *<parameter>bus</parameter></paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para>Whenever sd-bus is about to invoke a user-supplied callback function, it stores the
current callback, D-Bus message, slot and userdata pointer and allows these to be queried via
these <function>sd_bus_get_current_handler()</function>,
<function>sd_bus_get_current_message()</function>,
<function>sd_bus_get_current_slot()</function> and
<function>sd_bus_get_current_userdata()</function>, respectively. If <parameter>bus</parameter>
cannot be resolved or if execution does not reside in a user-supplied callback of
<parameter>bus</parameter> when calling any of these functions, they return
<constant>NULL</constant>.</para>
</refsect1>
<refsect1>
<title>Return Value</title>
<para>On success, these functions return the requested object. On failure, they return
<constant>NULL</constant>.</para>
</refsect1>
<xi:include href="libsystemd-pkgconfig.xml" />
<refsect1>
<title>See Also</title>
<para>
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd-bus</refentrytitle><manvolnum>3</manvolnum></citerefentry>
</para>
</refsect1>
</refentry>