man/systemd-stdio-bridge.xml

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<!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-or-later -->

<refentry id="systemd-stdio-bridge"
  xmlns:xi="http://www.w3.org/2001/XInclude">

  <refentryinfo>
    <title>systemd-stdio-bridge</title>
    <productname>systemd</productname>
  </refentryinfo>

  <refmeta>
    <refentrytitle>systemd-stdio-bridge</refentrytitle>
    <manvolnum>1</manvolnum>
  </refmeta>

  <refnamediv>
    <refname>systemd-stdio-bridge</refname>
    <refpurpose>D-Bus proxy</refpurpose>
  </refnamediv>

  <refsynopsisdiv>
    <cmdsynopsis>
      <command>systemd-stdio-bridge</command>
      <arg choice="opt" rep="repeat">OPTIONS</arg>
    </cmdsynopsis>
  </refsynopsisdiv>

  <refsect1>
    <title>Description</title>

    <para><command>systemd-stdio-bridge</command> implements a proxy between STDIN/STDOUT and a D-Bus bus. It
    expects to receive an open connection via STDIN/STDOUT when started, and will create a new connection to
    the specified bus. It will then forward messages between the two connections. This program is suitable
    for socket activation: the first connection may be a pipe or a socket and must be passed as either
    standard input, or as an open file descriptor according to the protocol described in
    <citerefentry><refentrytitle>sd_listen_fds</refentrytitle><manvolnum>3</manvolnum></citerefentry>. The
    second connection will be made by default to the local system bus, but this can be influenced by the
    <option>--user</option>, <option>--system</option>, <option>--machine=</option>, and
    <option>--bus-path=</option> options described below.</para>

    <para><citerefentry><refentrytitle>sd-bus</refentrytitle><manvolnum>3</manvolnum></citerefentry> uses
    <command>systemd-stdio-bridge</command> to forward D-Bus connections over
    <citerefentry project='die-net'><refentrytitle>ssh</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
    or to connect to the bus of a different user, see
    <citerefentry><refentrytitle>sd_bus_set_address</refentrytitle><manvolnum>3</manvolnum></citerefentry>.
    </para>
  </refsect1>

  <refsect1>
    <title>Options</title>

    <para>The following options are understood:</para>

    <variablelist>
      <xi:include href="user-system-options.xml" xpointer="user" />
      <xi:include href="user-system-options.xml" xpointer="system" />
      <xi:include href="user-system-options.xml" xpointer="machine" />

      <varlistentry>
          <term><option>-p <replaceable>PATH</replaceable></option></term>
          <term><option>--bus-path=<replaceable>PATH</replaceable></option></term>

          <listitem><para>Path to the bus address. Default: <literal>unix:path=/run/dbus/system_bus_socket</literal>
          </para></listitem>
      </varlistentry>

      <xi:include href="standard-options.xml" xpointer="help" />
      <xi:include href="standard-options.xml" xpointer="version" />
    </variablelist>
  </refsect1>

  <refsect1>
    <title>Exit status</title>

    <para>On success, 0 is returned, a non-zero failure code otherwise.</para>
  </refsect1>

  <refsect1>
    <title>See Also</title>
    <para>
      <citerefentry project='dbus'><refentrytitle>dbus-daemon</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
      <citerefentry project='dbus'><refentrytitle>dbus-broker</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
      <ulink url="https://www.freedesktop.org/wiki/Software/dbus">D-Bus</ulink>,
      <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>
    </para>
  </refsect1>

</refentry>