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| <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd"> |
| <refentry id="dbus-update-activation-environment.1"> |
| <refentryinfo> |
| <copyright> |
| <year>2015</year> |
| <holder>Collabora Ltd.</holder> |
| </copyright> |
| <legalnotice> |
| <para>This man page is distributed under the same terms as |
| dbus-update-activation-environment (MIT/X11). There is NO WARRANTY, |
| to the extent permitted by law.</para> |
| </legalnotice> |
| </refentryinfo> |
| |
| <refmeta> |
| <refentrytitle>dbus-update-activation-environment</refentrytitle> |
| <manvolnum>1</manvolnum> |
| <refmiscinfo class="manual">User Commands</refmiscinfo> |
| <refmiscinfo class="source">D-Bus</refmiscinfo> |
| <refmiscinfo class="version">@DBUS_VERSION@</refmiscinfo> |
| </refmeta> |
| <refnamediv> |
| <refname>dbus-update-activation-environment</refname> |
| <refpurpose>update environment used for D-Bus session services</refpurpose> |
| </refnamediv> |
| |
| <refsynopsisdiv id="synopsis"> |
| <cmdsynopsis> |
| <command>dbus-update-activation-environment</command> |
| <arg choice="opt">--systemd</arg> |
| <arg choice="opt">--verbose</arg> |
| <group choice="plain"> |
| <arg choice="plain">--all</arg> |
| <arg choice="plain" rep="repeat"><replaceable>VAR</replaceable></arg> |
| <arg choice="plain" rep="repeat"><replaceable>VAR</replaceable>=<replaceable>VAL</replaceable></arg> |
| </group> |
| </cmdsynopsis> |
| </refsynopsisdiv> |
| |
| <refsect1 id="description"> |
| <title>DESCRIPTION</title> |
| <para><command>dbus-update-activation-environment</command> |
| updates the list of environment variables used by |
| <command>dbus-daemon --session</command> |
| when it activates session services without using |
| <command>systemd</command>.</para> |
| |
| <para>With the <option>--systemd</option> option, |
| if an instance of <command>systemd --user</command> is |
| available on D-Bus, it also updates the list of environment variables |
| used by <command>systemd --user</command> |
| when it activates user services, including D-Bus session services |
| for which <command>dbus-daemon</command> has been configured to |
| delegate activation to <command>systemd</command>. |
| This is very similar to the <option>import-environment</option> |
| command provided by |
| <citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>).</para> |
| |
| <para>Variables that are special to <command>dbus-daemon</command> |
| or <command>systemd</command> may be set, but their values will |
| be overridden when a service is started. For instance, it is |
| not useful to add <envar>DBUS_SESSION_BUS_ADDRESS</envar> to |
| <command>dbus-daemon</command>'s activation environment, |
| although it might still be useful to add it to |
| <command>systemd</command>'s activation environment.</para> |
| </refsect1> |
| |
| <refsect1 id="options"> |
| <title>OPTIONS</title> |
| <variablelist remap="TP"> |
| |
| <varlistentry> |
| <term><option>--all</option></term> |
| <listitem> |
| <para>Set all environment variables present in |
| the environment used by |
| <command>dbus-update-activation-environment</command>. |
| </para> |
| </listitem> |
| </varlistentry> |
| |
| <varlistentry> |
| <term><option>--systemd</option></term> |
| <listitem> |
| <para>Set environment variables for systemd user services as well as |
| for traditional D-Bus session services.</para> |
| </listitem> |
| </varlistentry> |
| |
| <varlistentry> |
| <term><option>--verbose</option></term> |
| <listitem> |
| <para>Output messages to standard error explaining what |
| dbus-update-activation-environment is doing.</para> |
| </listitem> |
| </varlistentry> |
| |
| <varlistentry> |
| <term><replaceable>VAR</replaceable></term> |
| <listitem> |
| <para>If <replaceable>VAR</replaceable> is present in the |
| environment of <command>dbus-update-activation-environment</command>, |
| set it to the same value for D-Bus services. Its value must be |
| UTF-8 (if not, it is skipped with a warning). If |
| <replaceable>VAR</replaceable> is not present |
| in the environment, this argument is silently ignored. |
| </para> |
| </listitem> |
| </varlistentry> |
| |
| <varlistentry> |
| <term><replaceable>VAR</replaceable>=<replaceable>VAL</replaceable></term> |
| <listitem> |
| <para>Set <replaceable>VAR</replaceable> to <replaceable>VAL</replaceable>, |
| which must be UTF-8.</para> |
| </listitem> |
| </varlistentry> |
| |
| </variablelist> |
| </refsect1> |
| |
| <refsect1 id="examples"> |
| <title>EXAMPLES</title> |
| <para> |
| <command>dbus-update-activation-environment</command> is |
| primarily designed to be used in Linux distributions' X11 session |
| startup scripts, in conjunction with the "user bus" design. |
| </para> |
| |
| <para>To propagate <envar>DISPLAY</envar> and <envar>XAUTHORITY</envar> |
| to <command>dbus-daemon</command> |
| and, if present, <command>systemd</command>, |
| and propagate <envar>DBUS_SESSION_BUS_ADDRESS</envar> to |
| <command>systemd</command>: |
| <programlisting language="sh"> |
| dbus-update-activation-environment --systemd \ |
| DBUS_SESSION_BUS_ADDRESS DISPLAY XAUTHORITY |
| </programlisting> |
| </para> |
| |
| <para>To propagate all environment variables except |
| <envar>XDG_SEAT</envar>, <envar>XDG_SESSION_ID</envar> |
| and <envar>XDG_VTNR</envar> to <command>dbus-daemon</command> |
| (and, if present, <command>systemd</command>) for compatibility |
| with legacy X11 session startup scripts: |
| <programlisting language="sh"> |
| # in a subshell so the variables remain set in the |
| # parent script |
| ( |
| unset XDG_SEAT |
| unset XDG_SESSION_ID |
| unset XDG_VTNR |
| |
| dbus-update-activation-environment --systemd --all |
| ) |
| </programlisting> |
| </para> |
| </refsect1> |
| |
| <refsect1 id="exit_status"> |
| <title>EXIT STATUS</title> |
| <para> |
| <command>dbus-update-activation-environment</command> |
| exits with status 0 on success, EX_USAGE (64) on invalid |
| command-line options, EX_OSERR (71) if unable to connect |
| to the session bus, or EX_UNAVAILABLE (69) if unable to |
| set the environment variables. Other nonzero exit codes might be |
| added in future versions.</para> |
| </refsect1> |
| |
| <refsect1 id="environment"> |
| <title>ENVIRONMENT</title> |
| <para><envar>DBUS_SESSION_BUS_ADDRESS</envar>, |
| <envar>XDG_RUNTIME_DIR</envar> and/or <envar>DISPLAY</envar> |
| are used to find the address of the session bus.</para> |
| </refsect1> |
| |
| <refsect1 id="limitations"> |
| <title>LIMITATIONS</title> |
| <para> |
| <command>dbus-daemon</command> does not provide a way to unset |
| environment variables after they have been set (although |
| <command>systemd</command> does), so |
| <command>dbus-update-activation-environment</command> does not |
| offer this functionality either. |
| </para> |
| |
| <para> |
| POSIX does not specify the encoding of non-ASCII environment variable |
| names or values and allows them to contain any non-zero byte, but |
| neither <command>dbus-daemon</command> nor <command>systemd</command> |
| supports environment variables with non-UTF-8 names or values. |
| Accordingly, <command>dbus-update-activation-environment</command> |
| assumes that any name or value that appears to be valid UTF-8 is |
| intended to be UTF-8, and ignores other names or values with a warning. |
| </para> |
| </refsect1> |
| |
| <refsect1 id="bugs"> |
| <title>BUGS</title> |
| <para>Please send bug reports to the D-Bus bug tracker or mailing list. |
| See <ulink url="http://www.freedesktop.org/software/dbus/">http://www.freedesktop.org/software/dbus/</ulink>.</para> |
| </refsect1> |
| |
| <refsect1 id="see_also"> |
| <title>SEE ALSO</title> |
| <para><citerefentry><refentrytitle>dbus-daemon</refentrytitle><manvolnum>1</manvolnum></citerefentry>, |
| <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, |
| the <option>import-environment</option> command of |
| <citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry></para> |
| </refsect1> |
| </refentry> |