mirror of
https://github.com/systemd/systemd.git
synced 2024-11-01 09:21:26 +03:00
fdbbee37d5
Docbook styles required those to be present, even though the templates that we use did not show those names anywhere. But something changed semi-recently (I would suspect docbook templates, but there was only a minor version bump in recent years, and the changelog does not suggest anything related), and builds now work without those entries. Let's drop this dead weight. Tested with F26-F29, debian unstable. $ perl -i -0pe 's/\s*<authorgroup>.*<.authorgroup>//gms' man/*xml
201 lines
7.9 KiB
XML
201 lines
7.9 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">
|
|
|
|
<!--
|
|
SPDX-License-Identifier: LGPL-2.1+
|
|
-->
|
|
|
|
<refentry id="sd_uid_get_state" conditional='HAVE_PAM'
|
|
xmlns:xi="http://www.w3.org/2001/XInclude">
|
|
|
|
<refentryinfo>
|
|
<title>sd_uid_get_state</title>
|
|
<productname>systemd</productname>
|
|
</refentryinfo>
|
|
|
|
<refmeta>
|
|
<refentrytitle>sd_uid_get_state</refentrytitle>
|
|
<manvolnum>3</manvolnum>
|
|
</refmeta>
|
|
|
|
<refnamediv>
|
|
<refname>sd_uid_get_state</refname>
|
|
<refname>sd_uid_is_on_seat</refname>
|
|
<refname>sd_uid_get_sessions</refname>
|
|
<refname>sd_uid_get_seats</refname>
|
|
<refname>sd_uid_get_display</refname>
|
|
<refpurpose>Determine login state of a specific Unix user ID</refpurpose>
|
|
</refnamediv>
|
|
|
|
<refsynopsisdiv>
|
|
<funcsynopsis>
|
|
<funcsynopsisinfo>#include <systemd/sd-login.h></funcsynopsisinfo>
|
|
|
|
<funcprototype>
|
|
<funcdef>int <function>sd_uid_get_state</function></funcdef>
|
|
<paramdef>uid_t <parameter>uid</parameter></paramdef>
|
|
<paramdef>char **<parameter>state</parameter></paramdef>
|
|
</funcprototype>
|
|
|
|
<funcprototype>
|
|
<funcdef>int <function>sd_uid_is_on_seat</function></funcdef>
|
|
<paramdef>uid_t <parameter>uid</parameter></paramdef>
|
|
<paramdef>int <parameter>require_active</parameter></paramdef>
|
|
<paramdef>const char *<parameter>seat</parameter></paramdef>
|
|
</funcprototype>
|
|
|
|
<funcprototype>
|
|
<funcdef>int <function>sd_uid_get_sessions</function></funcdef>
|
|
<paramdef>uid_t <parameter>uid</parameter></paramdef>
|
|
<paramdef>int <parameter>require_active</parameter></paramdef>
|
|
<paramdef>char ***<parameter>sessions</parameter></paramdef>
|
|
</funcprototype>
|
|
|
|
<funcprototype>
|
|
<funcdef>int <function>sd_uid_get_seats</function></funcdef>
|
|
<paramdef>uid_t <parameter>uid</parameter></paramdef>
|
|
<paramdef>int <parameter>require_active</parameter></paramdef>
|
|
<paramdef>char ***<parameter>seats</parameter></paramdef>
|
|
</funcprototype>
|
|
|
|
<funcprototype>
|
|
<funcdef>int <function>sd_uid_get_display</function></funcdef>
|
|
<paramdef>uid_t <parameter>uid</parameter></paramdef>
|
|
<paramdef>char **<parameter>session</parameter></paramdef>
|
|
</funcprototype>
|
|
</funcsynopsis>
|
|
</refsynopsisdiv>
|
|
|
|
<refsect1>
|
|
<title>Description</title>
|
|
|
|
<para><function>sd_uid_get_state()</function> may be used to
|
|
determine the login state of a specific Unix user identifier. The
|
|
following states are currently known: <literal>offline</literal>
|
|
(user not logged in at all), <literal>lingering</literal> (user
|
|
not logged in, but some user services running),
|
|
<literal>online</literal> (user logged in, but not active, i.e.
|
|
has no session in the foreground), <literal>active</literal> (user
|
|
logged in, and has at least one active session, i.e. one session
|
|
in the foreground), <literal>closing</literal> (user not logged
|
|
in, and not lingering, but some processes are still around). In
|
|
the future additional states might be defined, client code should
|
|
be written to be robust in regards to additional state strings
|
|
being returned. 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_uid_is_on_seat()</function> may be used to
|
|
determine whether a specific user is logged in or active on a
|
|
specific seat. Accepts a Unix user identifier and a seat
|
|
identifier string as parameters. The
|
|
<parameter>require_active</parameter> parameter is a boolean
|
|
value. If non-zero (true), this function will test if the user is
|
|
active (i.e. has a session that is in the foreground and accepting
|
|
user input) on the specified seat, otherwise (false) only if the
|
|
user is logged in (and possibly inactive) on the specified
|
|
seat.</para>
|
|
|
|
<para><function>sd_uid_get_sessions()</function> may be used to
|
|
determine the current sessions of the specified user. Accepts a
|
|
Unix user identifier as parameter. The
|
|
<parameter>require_active</parameter> parameter controls whether
|
|
the returned list shall consist of only those sessions where the
|
|
user is currently active (> 0), where the user is currently
|
|
online but possibly inactive (= 0), or logged in at all but
|
|
possibly closing the session (< 0). The call returns a
|
|
<constant>NULL</constant> terminated string array of session
|
|
identifiers in <parameter>sessions</parameter> which needs to be
|
|
freed by the caller with the libc
|
|
<citerefentry project='man-pages'><refentrytitle>free</refentrytitle><manvolnum>3</manvolnum></citerefentry>
|
|
call after use, including all the strings referenced. If the
|
|
string array parameter is passed as <constant>NULL</constant>, the
|
|
array will not be filled in, but the return code still indicates
|
|
the number of current sessions. Note that instead of an empty
|
|
array <constant>NULL</constant> may be returned and should be
|
|
considered equivalent to an empty array.</para>
|
|
|
|
<para>Similarly, <function>sd_uid_get_seats()</function> may be
|
|
used to determine the list of seats on which the user currently
|
|
has sessions. Similar semantics apply, however note that the user
|
|
may have multiple sessions on the same seat as well as sessions
|
|
with no attached seat and hence the number of entries in the
|
|
returned array may differ from the one returned by
|
|
<function>sd_uid_get_sessions()</function>.</para>
|
|
|
|
<para><function>sd_uid_get_display()</function> returns the name
|
|
of the "primary" session of a user. If the user has graphical
|
|
sessions, it will be the oldest graphical session. Otherwise, it
|
|
will be the oldest open session.</para>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>Return Value</title>
|
|
|
|
<para>On success, <function>sd_uid_get_state()</function> returns
|
|
0 or a positive integer. If the test succeeds,
|
|
<function>sd_uid_is_on_seat()</function> returns a positive
|
|
integer; if it fails, 0.
|
|
<function>sd_uid_get_sessions()</function> and
|
|
<function>sd_uid_get_seats()</function> return the number of
|
|
entries in the returned arrays.
|
|
<function>sd_uid_get_display()</function> returns a non-negative
|
|
code on success. 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
|
|
user.</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). This is also returned if
|
|
the passed user ID is 0xFFFF or 0xFFFFFFFF, which are
|
|
undefined on Linux.</para></listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><constant>-ENOMEM</constant></term>
|
|
|
|
<listitem><para>Memory allocation failed.</para></listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
</refsect1>
|
|
|
|
<xi:include href="libsystemd-pkgconfig.xml" />
|
|
|
|
<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_pid_get_owner_uid</refentrytitle><manvolnum>3</manvolnum></citerefentry>
|
|
</para>
|
|
</refsect1>
|
|
|
|
</refentry>
|