summaryrefslogtreecommitdiff
path: root/man/sd_seat_get_active.xml
diff options
context:
space:
mode:
Diffstat (limited to 'man/sd_seat_get_active.xml')
-rw-r--r--man/sd_seat_get_active.xml212
1 files changed, 0 insertions, 212 deletions
diff --git a/man/sd_seat_get_active.xml b/man/sd_seat_get_active.xml
deleted file mode 100644
index c5e6ddab02..0000000000
--- a/man/sd_seat_get_active.xml
+++ /dev/null
@@ -1,212 +0,0 @@
-<?xml version='1.0'?> <!--*-nxml-*-->
-<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
- "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
-
-<!--
- This file is part of systemd.
-
- Copyright 2010 Lennart Poettering
-
- systemd is free software; you can redistribute it and/or modify it
- 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
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
--->
-
-<refentry id="sd_seat_get_active" conditional='HAVE_PAM'>
-
- <refentryinfo>
- <title>sd_seat_get_active</title>
- <productname>systemd</productname>
-
- <authorgroup>
- <author>
- <contrib>Developer</contrib>
- <firstname>Lennart</firstname>
- <surname>Poettering</surname>
- <email>lennart@poettering.net</email>
- </author>
- </authorgroup>
- </refentryinfo>
-
- <refmeta>
- <refentrytitle>sd_seat_get_active</refentrytitle>
- <manvolnum>3</manvolnum>
- </refmeta>
-
- <refnamediv>
- <refname>sd_seat_get_active</refname>
- <refname>sd_seat_get_sessions</refname>
- <refname>sd_seat_can_multi_session</refname>
- <refname>sd_seat_can_tty</refname>
- <refname>sd_seat_can_graphical</refname>
- <refpurpose>Determine state of a specific seat</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <funcsynopsis>
- <funcsynopsisinfo>#include &lt;systemd/sd-login.h&gt;</funcsynopsisinfo>
-
- <funcprototype>
- <funcdef>int <function>sd_seat_get_active</function></funcdef>
- <paramdef>const char *<parameter>seat</parameter></paramdef>
- <paramdef>char **<parameter>session</parameter></paramdef>
- <paramdef>uid_t *<parameter>uid</parameter></paramdef>
- </funcprototype>
-
- <funcprototype>
- <funcdef>int <function>sd_seat_get_sessions</function></funcdef>
- <paramdef>const char *<parameter>seat</parameter></paramdef>
- <paramdef>char ***<parameter>sessions</parameter></paramdef>
- <paramdef>uid_t **<parameter>uid</parameter></paramdef>
- <paramdef>unsigned int *<parameter>n_uids</parameter></paramdef>
- </funcprototype>
-
- <funcprototype>
- <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>
-
- <refsect1>
- <title>Description</title>
-
- <para><function>sd_seat_get_active()</function> may be used to
- determine which session is currently active on 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 passed <constant>NULL</constant>,
- in case only one of the parameters shall be queried. The returned
- string needs to be freed with the libc
- <citerefentry project='man-pages'><refentrytitle>free</refentrytitle><manvolnum>3</manvolnum></citerefentry>
- call after use.</para>
-
- <para><function>sd_seat_get_sessions()</function> may be used to
- determine all sessions on the specified seat. Returns two arrays,
- one (<constant>NULL</constant> terminated) with the session
- identifiers of the sessions and one with the user identifiers of
- the Unix users the sessions belong to. An additional parameter may
- be used to return the number of entries in the latter array. The
- two arrays and the latter parameter may be passed as
- <constant>NULL</constant> in case these values need not to be
- determined. The arrays and the strings referenced by them need to
- be freed with the libc
- <citerefentry project='man-pages'><refentrytitle>free</refentrytitle><manvolnum>3</manvolnum></citerefentry>
- call after use. Note that instead of an empty array
- <constant>NULL</constant> may be returned and should be considered
- equivalent to an empty array.</para>
-
- <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 (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 <varname>seat</varname> parameter of any of these
- functions is passed as <constant>NULL</constant>, the operation is
- executed for the seat of the session of the calling process, if
- there is any.</para>
- </refsect1>
-
- <refsect1>
- <title>Return Value</title>
-
- <para> On success, <function>sd_seat_get_active()</function>
- returns 0 or a positive integer. On success,
- <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>,
- <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>
-
- <refsect1>
- <title>Errors</title>
-
- <para>Returned errors may indicate the following problems:</para>
-
- <variablelist>
-
- <varlistentry>
- <term><constant>-ENODATA</constant></term>
-
- <listitem><para>The given field is not specified for the described
- seat.</para>
- </listitem>
- </varlistentry>
-
- <varlistentry>
- <term><constant>-ENXIO</constant></term>
-
- <listitem><para>The specified seat is unknown.</para>
- </listitem>
- </varlistentry>
-
- <varlistentry>
- <term><constant>-EINVAL</constant></term>
-
- <listitem><para>An input parameter was invalid (out of range,
- or NULL, where that is not accepted).</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><constant>-ENOMEM</constant></term>
-
- <listitem><para>Memory allocation failed.</para></listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Notes</title>
-
- <para>The <function>sd_seat_get_active()</function>,
- <function>sd_seat_get_sessions()</function>,
- <function>sd_seat_can_multi_session()</function>,
- <function>sd_seat_can_tty()</function> and
- <function>sd_seat_can_graphical()</function> interfaces are
- available as a shared library, which can be compiled and linked to
- with the
- <constant>libsystemd</constant> <citerefentry project='die-net'><refentrytitle>pkg-config</refentrytitle><manvolnum>1</manvolnum></citerefentry>
- file.</para>
- </refsect1>
-
- <refsect1>
- <title>See Also</title>
-
- <para>
- <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>sd-login</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>sd_session_get_seat</refentrytitle><manvolnum>3</manvolnum></citerefentry>
- </para>
- </refsect1>
-
-</refentry>