mirror of
https://github.com/systemd/systemd-stable.git
synced 2024-12-23 17:34:00 +03:00
189 lines
8.1 KiB
XML
189 lines
8.1 KiB
XML
<?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_set_address"
|
|
xmlns:xi="http://www.w3.org/2001/XInclude">
|
|
|
|
<refentryinfo>
|
|
<title>sd_bus_set_address</title>
|
|
<productname>systemd</productname>
|
|
</refentryinfo>
|
|
|
|
<refmeta>
|
|
<refentrytitle>sd_bus_set_address</refentrytitle>
|
|
<manvolnum>3</manvolnum>
|
|
</refmeta>
|
|
|
|
<refnamediv>
|
|
<refname>sd_bus_set_address</refname>
|
|
<refname>sd_bus_get_address</refname>
|
|
<refname>sd_bus_set_exec</refname>
|
|
|
|
<refpurpose>Set or query the address of the bus connection</refpurpose>
|
|
</refnamediv>
|
|
|
|
<refsynopsisdiv>
|
|
<funcsynopsis>
|
|
<funcsynopsisinfo>#include <systemd/sd-bus.h></funcsynopsisinfo>
|
|
|
|
<funcprototype>
|
|
<funcdef>int <function>sd_bus_set_address</function></funcdef>
|
|
<paramdef>sd_bus *<parameter>bus</parameter></paramdef>
|
|
<paramdef>const char *<parameter>address</parameter></paramdef>
|
|
</funcprototype>
|
|
|
|
<funcprototype>
|
|
<funcdef>int <function>sd_bus_get_address</function></funcdef>
|
|
<paramdef>sd_bus *<parameter>bus</parameter></paramdef>
|
|
<paramdef>const char **<parameter>address</parameter></paramdef>
|
|
</funcprototype>
|
|
|
|
<funcprototype>
|
|
<funcdef>int <function>sd_bus_set_exec</function></funcdef>
|
|
<paramdef>sd_bus *<parameter>bus</parameter></paramdef>
|
|
<paramdef>const char *<parameter>path</parameter></paramdef>
|
|
<paramdef>char *const *<parameter>argv</parameter></paramdef>
|
|
</funcprototype>
|
|
</funcsynopsis>
|
|
</refsynopsisdiv>
|
|
|
|
<refsect1>
|
|
<title>Description</title>
|
|
|
|
<para><function>sd_bus_set_address()</function> configures a list of addresses of bus brokers to try to
|
|
connect to from a subsequent
|
|
<citerefentry><refentrytitle>sd_bus_start</refentrytitle><manvolnum>3</manvolnum></citerefentry> call.
|
|
The argument is a <literal>;</literal>-separated list of addresses to try. Each item must be one of the
|
|
following:
|
|
</para>
|
|
|
|
<itemizedlist>
|
|
<listitem>
|
|
<para>A unix socket address specified as
|
|
<literal>unix:guid=<replaceable>guid</replaceable>,path=<replaceable>path</replaceable></literal> or
|
|
<literal>unix:guid=<replaceable>guid</replaceable>,abstract=<replaceable>path</replaceable></literal>.
|
|
Exactly one of the <varname>path=</varname> and <varname>abstract=</varname> keys must be present,
|
|
while <varname>guid=</varname> is optional.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>A TCP socket address specified as
|
|
<literal>tcp:[guid=<replaceable>guid</replaceable>,][host=<replaceable>host</replaceable>][,port=<replaceable>port</replaceable>][,family=<replaceable>family</replaceable>]</literal>.
|
|
One or both of the <varname>host=</varname> and <varname>port=</varname> keys must be present, while
|
|
the rest is optional. <replaceable>family</replaceable> may be either <option>ipv4</option> or
|
|
<option>ipv6</option>.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>An executable to spawn specified as
|
|
<literal>unixexec:guid=<replaceable>guid</replaceable>,path=<replaceable>path</replaceable>,argv1=<replaceable>argument</replaceable>,argv2=<replaceable>argument</replaceable>,...</literal>.
|
|
The <varname>path=</varname> key must be present, while <varname>guid=</varname> is optional.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>A machine (container) to connect to specified as
|
|
<literal>x-machine-unix:guid=<replaceable>guid</replaceable>,machine=<replaceable>machine</replaceable>,pid=<replaceable>pid</replaceable></literal>.
|
|
Exactly one of the <varname>machine=</varname> and <varname>pid=</varname> keys must be present,
|
|
while <varname>guid=</varname> is optional. <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. <literal>machine=.host</literal> may be used to specify
|
|
the host machine. A connection to the standard system bus socket inside of the specified machine will
|
|
be created.</para>
|
|
</listitem>
|
|
</itemizedlist>
|
|
|
|
<para>In all cases, parameter <parameter>guid</parameter> is an identifier of the remote peer, in the
|
|
syntax accepted by
|
|
<citerefentry><refentrytitle>sd_id128_from_string</refentrytitle><manvolnum>3</manvolnum></citerefentry>.
|
|
If specified, the identifier returned by the peer after the connection is established will be checked and
|
|
the connection will be rejected in case of a mismatch.</para>
|
|
|
|
<para>Note that the addresses passed to <function>sd_bus_set_address()</function> may not be verified
|
|
immediately. If they are invalid, an error may be returned e.g. from a subsequent call to
|
|
<citerefentry><refentrytitle>sd_bus_start</refentrytitle><manvolnum>3</manvolnum></citerefentry>.
|
|
</para>
|
|
|
|
<para><function>sd_bus_get_address()</function> returns any previously set addresses. In addition to
|
|
being explicitly set by <function>sd_bus_set_address()</function>, the address will also be set
|
|
automatically by
|
|
<citerefentry><refentrytitle>sd_bus_open</refentrytitle><manvolnum>3</manvolnum></citerefentry> and
|
|
similar calls, based on environment variables or built-in defaults.</para>
|
|
|
|
<para><function>sd_bus_set_exec</function> is a shorthand function for setting a
|
|
<literal>unixexec</literal> address that spawns the given executable with the given arguments.
|
|
If <parameter>argv</parameter> is <constant>NULL</constant>, the given executable is spawned
|
|
without any extra arguments.</para>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>Return Value</title>
|
|
|
|
<para>On success, these functions return a non-negative integer. On failure, they return a negative
|
|
errno-style error code.</para>
|
|
|
|
<refsect2>
|
|
<title>Errors</title>
|
|
|
|
<para>Returned errors may indicate the following problems:</para>
|
|
|
|
<variablelist>
|
|
<varlistentry>
|
|
<term><constant>-EINVAL</constant></term>
|
|
|
|
<listitem><para>The input parameters <parameter>bus</parameter> or <parameter>address</parameter> are <constant>NULL</constant>.
|
|
</para></listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><constant>-ENOPKG</constant></term>
|
|
|
|
<listitem><para>The bus object <parameter>bus</parameter> could not be resolved.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><constant>-EPERM</constant></term>
|
|
|
|
<listitem><para>The input parameter <parameter>bus</parameter> is in a wrong state
|
|
(<function>sd_bus_set_address()</function> may only be called once on a newly-created bus object).</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><constant>-ECHILD</constant></term>
|
|
|
|
<listitem><para>The bus object <parameter>bus</parameter> was created in a different
|
|
process.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><constant>-ENODATA</constant></term>
|
|
|
|
<listitem><para>The bus object <parameter>bus</parameter> has no address configured.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
</refsect2>
|
|
</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>,
|
|
<citerefentry><refentrytitle>sd_bus_new</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
|
|
<citerefentry><refentrytitle>sd_bus_start</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
|
|
<citerefentry><refentrytitle>systemd-machined.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
|
|
<citerefentry><refentrytitle>machinectl</refentrytitle><manvolnum>1</manvolnum></citerefentry>
|
|
</para>
|
|
</refsect1>
|
|
|
|
</refentry>
|