<?xml version='1.0'?>
-<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
-"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
-
-<!--
- SPDX-License-Identifier: LGPL-2.1+
--->
+<!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_default" xmlns:xi="http://www.w3.org/2001/XInclude">
<refname>sd_bus_default_system</refname>
<refname>sd_bus_open</refname>
+ <refname>sd_bus_open_with_description</refname>
<refname>sd_bus_open_user</refname>
+ <refname>sd_bus_open_user_with_description</refname>
<refname>sd_bus_open_system</refname>
+ <refname>sd_bus_open_system_with_description</refname>
<refname>sd_bus_open_system_remote</refname>
<refname>sd_bus_open_system_machine</refname>
<paramdef>sd_bus **<parameter>bus</parameter></paramdef>
</funcprototype>
+ <funcprototype>
+ <funcdef>int <function>sd_bus_open_with_description</function></funcdef>
+ <paramdef>sd_bus **<parameter>bus</parameter></paramdef>
+ <paramdef>const char *<parameter>description</parameter></paramdef>
+ </funcprototype>
+
<funcprototype>
<funcdef>int <function>sd_bus_open_user</function></funcdef>
<paramdef>sd_bus **<parameter>bus</parameter></paramdef>
</funcprototype>
+ <funcprototype>
+ <funcdef>int <function>sd_bus_open_user_with_description</function></funcdef>
+ <paramdef>sd_bus **<parameter>bus</parameter></paramdef>
+ <paramdef>const char *<parameter>description</parameter></paramdef>
+ </funcprototype>
+
<funcprototype>
<funcdef>int <function>sd_bus_open_system</function></funcdef>
<paramdef>sd_bus **<parameter>bus</parameter></paramdef>
</funcprototype>
+ <funcprototype>
+ <funcdef>int <function>sd_bus_open_system_with_description</function></funcdef>
+ <paramdef>sd_bus **<parameter>bus</parameter></paramdef>
+ <paramdef>const char *<parameter>description</parameter></paramdef>
+ </funcprototype>
+
<funcprototype>
<funcdef>int <function>sd_bus_open_system_remote</function></funcdef>
<paramdef>sd_bus **<parameter>bus</parameter></paramdef>
<function>sd_bus_default_system()</function> to connect to the
user or system buses.</para>
+ <para><function>sd_bus_open_with_description()</function>,
+ <function>sd_bus_open_user_with_description()</function>, and
+ <function>sd_bus_open_system_with_description()</function> are similar to
+ <function>sd_bus_open()</function>, <function>sd_bus_open_user()</function>, and
+ <function>sd_bus_open_system()</function>, but allow a description string to be set, see
+ <citerefentry><refentrytitle>sd_bus_set_description</refentrytitle><manvolnum>3</manvolnum></citerefentry>.
+ <parameter>description</parameter> may be <constant>NULL</constant>, in which case this function
+ is equivalent to <function>sd_bus_open()</function>. This description string is used in log
+ messages about the bus object, and including a "name" for the bus makes them easier to
+ understand. Some messages are emitted during bus initialization, hence using this function is
+ prefereable to setting the description later with
+ <function>sd_bus_open_with_description()</function>. The argument is copied internally and will
+ not be referenced after the function returns.</para>
+
<para>If the <varname>$DBUS_SESSION_BUS_ADDRESS</varname> environment
variable is set
(cf. <citerefentry project='man-pages'><refentrytitle>environ</refentrytitle><manvolnum>7</manvolnum></citerefentry>),
<citerefentry project='die-net'><refentrytitle>ssh</refentrytitle><manvolnum>1</manvolnum></citerefentry>.
<parameter>host</parameter> consists of an optional user name followed by the
<literal>@</literal> symbol, and the hostname, optionally followed by a
- <literal>:</literal> and a machine name. If the machine name is given, a connection
+ <literal>:</literal> and a port, optionally followed by a
+ <literal>/</literal> and a machine name. If the machine name is given, a connection
is created to the system bus in the specified container on the remote machine, and
otherwise a connection to the system bus on the specified host is created.</para>
<para>Note that entering a container is a privileged operation, and will likely only
work for the root user on the remote machine.</para>
- <para><function>sd_bus_open_system_machine()</function> connects
- to the system bus in the specified <parameter>machine</parameter>,
- where <parameter>machine</parameter> is the name of a local
- container. See
- <citerefentry><refentrytitle>machinectl</refentrytitle><manvolnum>1</manvolnum></citerefentry>
- for more information about the "machine" concept. Note that
- connections into local containers are only available to privileged
- processes at this time.</para>
+ <para><function>sd_bus_open_system_machine()</function> connects to the system bus in the specified
+ <parameter>machine</parameter>, where <parameter>machine</parameter> is the name of a local
+ container. See
+ <citerefentry><refentrytitle>sd_bus_set_address</refentrytitle><manvolnum>3</manvolnum></citerefentry>
+ for a description of the address syntax, and
+ <citerefentry><refentrytitle>machinectl</refentrytitle><manvolnum>1</manvolnum></citerefentry> for more
+ information about the "machine" concept. Note that connections into local containers are only available
+ to privileged processes at this time.</para>
<para>These calls allocate a bus connection object and initiate
the connection to a well-known bus of some form. An alternative to
<para>On success, these calls return 0 or a positive
integer. On failure, these calls return a negative
errno-style error code.</para>
- </refsect1>
- <refsect1>
- <title>Errors</title>
+ <refsect2>
+ <title>Errors</title>
- <para>Returned errors may indicate the following problems:</para>
+
<para>Returned errors may indicate the following problems:</para>
- <variablelist>
+ <variablelist>
- <varlistentry>
- <term><constant>-EINVAL</constant></term>
+ <varlistentry>
+ <term><constant>-EINVAL</constant></term>
- <listitem><para>The specified parameters are invalid.</para></listitem>
- </varlistentry>
+
<listitem><para>The specified parameters are invalid.</para></listitem>
+ </varlistentry>
- <varlistentry>
- <term><constant>-ENOMEM</constant></term>
+ <varlistentry>
+ <term><constant>-ENOMEM</constant></term>
- <listitem><para>Memory allocation failed.</para></listitem>
- </varlistentry>
+
<listitem><para>Memory allocation failed.</para></listitem>
+ </varlistentry>
- <varlistentry>
- <term><constant>-ESOCKTNOSUPPORT</constant></term>
+ <varlistentry>
+ <term><constant>-ESOCKTNOSUPPORT</constant></term>
- <listitem><para>The protocol version required to connect to the selected bus is not supported.</para></listitem>
- </varlistentry>
- </variablelist>
+ <listitem><para>The protocol version required to connect to the selected bus is not
+ supported.</para></listitem>
+ </varlistentry>
+ </variablelist>
- <para>In addition, any further connection-related errors may be
- by returned. See <citerefentry><refentrytitle>sd_bus_send</refentrytitle><manvolnum>3</manvolnum></citerefentry>.</para>
+ <para>In addition, other connection-related errors may be returned. See
+ <citerefentry><refentrytitle>sd_bus_send</refentrytitle><manvolnum>3</manvolnum></citerefentry>.</para>
+ </refsect2>
</refsect1>
<xi:include href="libsystemd-pkgconfig.xml" />
<citerefentry><refentrytitle>sd_bus_new</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd_bus_ref</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd_bus_unref</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>sd_bus_close</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry project='die-net'><refentrytitle>ssh</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemd-machined.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
<citerefentry><refentrytitle>machinectl</refentrytitle><manvolnum>1</manvolnum></citerefentry>
projects / thirdparty / systemd.git / blobdiff