681eb9cf2b
In particular, use /lib/systemd instead of /usr/lib/systemd in distributions like Debian which still have not adopted a /usr merge setup. Use XML entities from man/custom-entities.ent to replace configured paths while doing XSLT processing of the original XML files. There was precedent of some files (such as systemd.generator.xml) which were already using this approach. This addresses most of the (manual) fixes from this patch: http://anonscm.debian.org/cgit/pkg-systemd/systemd.git/tree/debian/patches/Fix-paths-in-man-pages.patch?h=experimental-220 The idea of using generic XML entities was presented here: http://lists.freedesktop.org/archives/systemd-devel/2015-May/032240.html This patch solves almost all the issues, with the exception of: - Path to /bin/mount and /bin/umount. - Generic statements about preference of /lib over /etc. These will be handled separately by follow up patches. Tested: - With default configure settings, ran "make install" to two separate directories and compared the output to confirm they matched exactly. - Used a set of configure flags including $CONFFLAGS from Debian: http://anonscm.debian.org/cgit/pkg-systemd/systemd.git/tree/debian/rules Installed the tree and confirmed the paths use /lib/systemd instead of /usr/lib/systemd and that no other unexpected differences exist. - Confirmed that `make distcheck` still passes.
179 lines
7 KiB
XML
179 lines
7 KiB
XML
<?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" [
|
||
<!ENTITY % entities SYSTEM "custom-entities.ent" >
|
||
%entities;
|
||
]>
|
||
|
||
<!--
|
||
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 <systemd/sd-login.h></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>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_grapical()</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>
|