Copyright 2010 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
+ Lesser General Public License for more details.
- You should have received a copy of the GNU General Public License
+ You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
-->
<funcdef>int <function>sd_seat_can_multi_session</function></funcdef>
<paramdef>const char* <parameter>seat</parameter></paramdef>
</funcprototype>
+
+ <funcprototype>
+ <funcdef>int <function>sd_seat_can_tty</function></funcdef>
+ <paramdef>const char* <parameter>seat</parameter></paramdef>
+ </funcprototype>
+
+ <funcprototype>
+ <funcdef>int <function>sd_seat_can_graphical</function></funcdef>
+ <paramdef>const char* <parameter>seat</parameter></paramdef>
+ </funcprototype>
</funcsynopsis>
</refsynopsisdiv>
a seat, if there is any. Returns the session
identifier and the user identifier of the Unix user
the session is belonging to. Either the session or the
- user identifier parameter can be be passed NULL, in
+ user identifier parameter can be passed NULL, in
case only one of the parameters shall be queried. The
returned string needs to be freed with the libc
<citerefentry><refentrytitle>free</refentrytitle><manvolnum>3</manvolnum></citerefentry>
<para><function>sd_seat_can_multi_session()</function>
may be used to determine whether a specific seat is
capable of multi-session, i.e. allows multiple login
- sessions in parallel (whith only one being active at a
+ sessions in parallel (with only one being active at a
time).</para>
+ <para><function>sd_seat_can_tty()</function> may be
+ used to determine whether a specific seat provides TTY
+ functionality, i.e. is useful as a text console.</para>
+
+ <para><function>sd_seat_can_graphical()</function> may
+ be used to determine whether a specific seat provides
+ graphics functionality, i.e. is useful as a graphics
+ display.</para>
+
<para>If the <literal>seat</literal> parameter of any
of these functions is passed as NULL the operation is
executed for the seat of the session of the calling
<function>sd_seat_get_sessions()</function> returns
the number of entries in the session identifier
array. If the test succeeds
- <function>sd_seat_can_multi_session</function> returns
- a positive integer, if it fails 0. On failure, these
+ <function>sd_seat_can_multi_session</function>,
+ <function>sd_seat_can_tty</function> and
+ <function>sd_seat_can_graphical</function> return a
+ positive integer, if it fails 0. On failure, these
calls return a negative errno-style error code.</para>
</refsect1>
<title>Notes</title>
<para>The <function>sd_seat_get_active()</function>,
- <function>sd_seat_get_sessions()</function>, and
- <function>sd_seat_can_multi_session()</function> interfaces
+ <function>sd_seat_get_sessions()</function>,
+ <function>sd_seat_can_multi_session()</function>,
+ <function>sd_seat_can_tty()</function> and
+ <function>sd_seat_can_grapical()</function> interfaces
are available as shared library, which can be compiled
and linked to with the
<literal>libsystemd-login</literal>
<para>
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>sd-login</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>sd-login</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd_session_get_seat</refentrytitle><manvolnum>3</manvolnum></citerefentry>
</para>
</refsect1>