remove non-login things from man

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diff --git a/man/sd_bus_error.xml b/man/sd_bus_error.xml
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-<?xml version='1.0'?> <!--*- Mode: nxml; nxml-child-indent: 2; indent-tabs-mode: nil -*-->
-<!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 2014 Zbigniew Jędrzejewski-Szmek
-
-  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_bus_error" conditional="ENABLE_KDBUS">
-
-  <refentryinfo>
-    <title>sd_bus_error</title>
-    <productname>systemd</productname>
-
-    <authorgroup>
-      <author>
-        <contrib>A monkey with a typewriter</contrib>
-        <firstname>Zbigniew</firstname>
-        <surname>Jędrzejewski-Szmek</surname>
-        <email>zbyszek@in.waw.pl</email>
-      </author>
-    </authorgroup>
-  </refentryinfo>
-
-  <refmeta>
-    <refentrytitle>sd_bus_error</refentrytitle>
-    <manvolnum>3</manvolnum>
-  </refmeta>
-
-  <refnamediv>
-    <refname>sd_bus_error</refname>
-    <refname>sd_bus_error_free</refname>
-    <refname>sd_bus_error_set</refname>
-    <refname>sd_bus_error_set_const</refname>
-    <refname>sd_bus_error_set_errno</refname>
-    <refname>sd_bus_error_set_errnof</refname>
-    <refname>sd_bus_error_get_errno</refname>
-    <refname>sd_bus_error_copy</refname>
-    <refname>sd_bus_error_is_set</refname>
-    <refname>sd_bus_error_has_name</refname>
-
-    <refpurpose>sd-bus error handling</refpurpose>
-  </refnamediv>
-
-  <refsynopsisdiv>
-    <funcsynopsis>
-      <funcsynopsisinfo>#include &lt;systemd/sd-bus.h&gt;</funcsynopsisinfo>
-
-      <funcsynopsisinfo>typedef struct {
-        const char *name;
-        const char *message;
-        ...
-} sd_bus_error;</funcsynopsisinfo>
-
-      <para>
-        <constant>SD_BUS_ERROR_MAKE_CONST(<replaceable>name</replaceable>, <replaceable>message</replaceable>)</constant>
-      </para>
-      <para>
-        <constant>SD_BUS_ERROR_NULL</constant>
-      </para>
-
-      <funcprototype>
-        <funcdef>int <function>sd_bus_error_free</function></funcdef>
-        <paramdef>sd_bus_error *<parameter>e</parameter></paramdef>
-      </funcprototype>
-
-      <funcprototype>
-        <funcdef>int <function>sd_bus_error_set</function></funcdef>
-        <paramdef>sd_bus_error *<parameter>e</parameter></paramdef>
-        <paramdef>const char *<parameter>name</parameter></paramdef>
-        <paramdef>const char *<parameter>message</parameter></paramdef>
-      </funcprototype>
-
-      <funcprototype>
-        <funcdef>int <function>sd_bus_error_setf</function></funcdef>
-        <paramdef>sd_bus_error *<parameter>e</parameter></paramdef>
-        <paramdef>const char *<parameter>name</parameter></paramdef>
-        <paramdef>const char *<parameter>format</parameter></paramdef>
-        <paramdef>...</paramdef>
-      </funcprototype>
-
-      <funcprototype>
-        <funcdef>int <function>sd_bus_error_set_const</function></funcdef>
-        <paramdef>sd_bus_error *<parameter>e</parameter></paramdef>
-        <paramdef>const char *<parameter>name</parameter></paramdef>
-        <paramdef>const char *<parameter>message</parameter></paramdef>
-      </funcprototype>
-
-      <funcprototype>
-        <funcdef>int <function>sd_bus_error_set_errno</function></funcdef>
-        <paramdef>sd_bus_error *<parameter>e</parameter></paramdef>
-        <paramdef>int <parameter>error</parameter></paramdef>
-      </funcprototype>
-
-      <funcprototype>
-        <funcdef>int <function>sd_bus_error_set_errnof</function></funcdef>
-        <paramdef>sd_bus_error *<parameter>e</parameter></paramdef>
-        <paramdef>int <parameter>error</parameter></paramdef>
-        <paramdef>const char *<parameter>format</parameter></paramdef>
-        <paramdef>...</paramdef>
-      </funcprototype>
-
-      <funcprototype>
-        <funcdef>int <function>sd_bus_error_get_errno</function></funcdef>
-        <paramdef>const sd_bus_error *<parameter>e</parameter></paramdef>
-      </funcprototype>
-
-      <funcprototype>
-        <funcdef>int <function>sd_bus_error_copy</function></funcdef>
-        <paramdef>sd_bus_error *<parameter>dst</parameter></paramdef>
-        <paramdef>const sd_bus_error *<parameter>e</parameter></paramdef>
-      </funcprototype>
-
-      <funcprototype>
-        <funcdef>int <function>sd_bus_error_is_set</function></funcdef>
-        <paramdef>const sd_bus_error *<parameter>e</parameter></paramdef>
-      </funcprototype>
-
-      <funcprototype>
-        <funcdef>int <function>sd_bus_error_has_name</function></funcdef>
-        <paramdef>const sd_bus_error *<parameter>e</parameter></paramdef>
-        <paramdef>const char *<parameter>name</parameter></paramdef>
-      </funcprototype>
-    </funcsynopsis>
-
-    <para>
-      <constant>SD_BUS_ERROR_FAILED</constant>
-    </para>
-    <para>
-      <constant>SD_BUS_ERROR_NO_MEMORY</constant>
-    </para>
-    <para>
-      <constant>SD_BUS_ERROR_SERVICE_UNKNOWN</constant>
-    </para>
-    <para>
-      <constant>SD_BUS_ERROR_NAME_HAS_NO_OWNER</constant>
-    </para>
-    <para>
-      <constant>SD_BUS_ERROR_NO_REPLY</constant>
-    </para>
-    <para>
-      <constant>SD_BUS_ERROR_IO_ERROR</constant>
-    </para>
-    <para>
-      <constant>SD_BUS_ERROR_BAD_ADDRESS</constant>
-    </para>
-    <para>
-      <constant>SD_BUS_ERROR_NOT_SUPPORTED</constant>
-    </para>
-    <para>
-      <constant>SD_BUS_ERROR_LIMITS_EXCEEDED</constant>
-    </para>
-    <para>
-      <constant>SD_BUS_ERROR_ACCESS_DENIED</constant>
-    </para>
-    <para>
-      <constant>SD_BUS_ERROR_AUTH_FAILED</constant>
-    </para>
-    <para>
-      <constant>SD_BUS_ERROR_NO_SERVER</constant>
-    </para>
-    <para>
-      <constant>SD_BUS_ERROR_TIMEOUT</constant>
-    </para>
-    <para>
-      <constant>SD_BUS_ERROR_NO_NETWORK</constant>
-    </para>
-    <para>
-      <constant>SD_BUS_ERROR_ADDRESS_IN_USE</constant>
-    </para>
-    <para>
-      <constant>SD_BUS_ERROR_DISCONNECTED</constant>
-    </para>
-    <para>
-      <constant>SD_BUS_ERROR_INVALID_ARGS</constant>
-    </para>
-    <para>
-      <constant>SD_BUS_ERROR_FILE_NOT_FOUND</constant>
-    </para>
-    <para>
-      <constant>SD_BUS_ERROR_FILE_EXISTS</constant>
-    </para>
-    <para>
-      <constant>SD_BUS_ERROR_UNKNOWN_METHOD</constant>
-    </para>
-    <para>
-      <constant>SD_BUS_ERROR_UNKNOWN_OBJECT</constant>
-    </para>
-    <para>
-      <constant>SD_BUS_ERROR_UNKNOWN_INTERFACE</constant>
-    </para>
-    <para>
-      <constant>SD_BUS_ERROR_UNKNOWN_PROPERTY</constant>
-    </para>
-    <para>
-      <constant>SD_BUS_ERROR_PROPERTY_READ_ONLY</constant>
-    </para>
-    <para>
-      <constant>SD_BUS_ERROR_UNIX_PROCESS_ID_UNKNOWN</constant>
-    </para>
-    <para>
-      <constant>SD_BUS_ERROR_INVALID_SIGNATURE</constant>
-    </para>
-    <para>
-      <constant>SD_BUS_ERROR_INCONSISTENT_MESSAGE</constant>
-    </para>
-    <para>
-      <constant>SD_BUS_ERROR_MATCH_RULE_NOT_FOUND</constant>
-    </para>
-    <para>
-      <constant>SD_BUS_ERROR_MATCH_RULE_INVALID</constant>
-    </para>
-
-  </refsynopsisdiv>
-
-  <refsect1>
-    <title>Description</title>
-
-    <para>The <structname>sd_bus_error</structname> structure carries
-    information for a <filename>sd-bus</filename> error. The
-    functions described below can be used to set and query fields in
-    this structure. The <structfield>name</structfield> field contains a
-    short identifier of an error. It should follow the rules for error
-    names described in the D-Bus specification, subsection <ulink
-    url="http://dbus.freedesktop.org/doc/dbus-specification.html#message-protocol-names">Valid
-    Names</ulink>. The <structfield>message</structfield> is a human
-    readable string describing the details. When no longer necessary,
-    resources held by this structure should be destroyed with
-    <function>sd_bus_error_free</function>.</para>
-
-    <para><function>sd_bus_error_set</function> will return an
-    errno-like negative value returned based on parameter
-    <parameter>name</parameter> (see
-    <citerefentry project='man-pages'><refentrytitle>errno</refentrytitle><manvolnum>3</manvolnum></citerefentry>).
-    Various well-known D-Bus errors are converted to specific values,
-    and the remaining ones to <constant>-ENXIO</constant>. Well-known
-    D-Bus error names are available as constants
-    <constant>SD_BUS_ERROR_FAILED</constant>, etc., listed above. If
-    <parameter>name</parameter> is <constant>NULL</constant>, it is
-    assumed that no error occurred, and 0 is returned. This means that
-    this function may be conveniently used in a
-    <function>return</function> statement.</para>
-
-    <para>If <parameter>e</parameter> is not
-    <constant>NULL</constant>, <structfield>name</structfield> and
-    <structfield>message</structfield> in the
-    <structname>sd_bus_error</structname> structure
-    <parameter>e</parameter> points at will be filled in. As described above,
-    <parameter>name</parameter> may be <constant>NULL</constant>,
-    which is treated as no error. Parameter
-    <parameter>message</parameter> may also be
-    <constant>NULL</constant>, in which case no message is specified.
-    <function>sd_bus_error_set</function> will make internal copies of
-    specified strings.</para>
-
-    <para><function>sd_bus_error_setf</function> is similar to
-    <function>sd_bus_error_set</function>, but takes a
-    <citerefentry project='man-pages'><refentrytitle>printf</refentrytitle><manvolnum>3</manvolnum></citerefentry>
-    format string and corresponding arguments to generate
-    <structname>message</structname>.</para>
-
-    <para><function>sd_bus_error_set_const</function> is similar to
-    <function>sd_bus_error_set</function>, but string parameters are
-    not copied internally, and must remain valid for the lifetime of
-    <parameter>e</parameter>.</para>
-
-    <para><function>sd_bus_error_set_errno</function> will set
-    <structfield>name</structfield> based on an errno-like value.
-    <citerefentry project='die-net'><refentrytitle>strerror</refentrytitle><manvolnum>3</manvolnum></citerefentry>
-    will be used to set <structfield>message</structfield>. Well-known
-    D-Bus error names will be used for <structfield>name</structfield>
-    if available, otherwise a name in the
-    <literal>System.Error</literal> namespace will be generated.
-    </para>
-
-    <para><function>sd_bus_error_set_errnof</function> is similar to
-    <function>sd_bus_error_set_errno</function>, but in addition to
-    <parameter>name</parameter>, takes a
-    <citerefentry project='man-pages'><refentrytitle>printf</refentrytitle><manvolnum>3</manvolnum></citerefentry>
-    format and corresponding arguments.
-    <structfield>name</structfield> will be generated from
-    <parameter>format</parameter> and the arguments.</para>
-
-    <para><function>sd_bus_error_get_errno</function> will convert
-    <structname>e-&gt;name</structname> to an errno-like value using the
-    same rules as <function>sd_bus_error_set</function>.  If
-    <parameter>e</parameter> is <constant>NULL</constant>, 0 will be
-    returned.</para>
-
-    <para><function>sd_bus_error_copy</function> will initialize
-    <parameter>dst</parameter> using the values in
-    <parameter>e</parameter>. If the strings in
-    <parameter>e</parameter> were set using
-    <function>sd_bus_set_error_const</function>, they will be shared.
-    Otherwise, they will be copied.</para>
-
-    <para><function>sd_bus_error_is_set</function> will return
-    <constant>true</constant> if <parameter>e</parameter> is
-    non-<constant>NULL</constant> and an error has been set,
-    <constant>false</constant> otherwise.</para>
-
-    <para><function>sd_bus_error_has_name</function> will return true
-    if <parameter>e</parameter> is non-<constant>NULL</constant> and
-    an error with the same <parameter>name</parameter> has been set,
-    <constant>false</constant> otherwise.</para>
-
-    <para><function>sd_bus_error_free</function> will destroy resources
-    held by <parameter>e</parameter>. The parameter itself will not
-    be deallocated, and must be
-    <citerefentry project='man-pages'><refentrytitle>free</refentrytitle><manvolnum>3</manvolnum></citerefentry>d
-    by the caller if necessary.</para>
-  </refsect1>
-
-  <refsect1>
-    <title>Return Value</title>
-
-    <para>Functions <function>sd_bus_error_set</function>,
-    <function>sd_bus_error_setf</function>,
-    <function>sd_bus_error_set_const</function>, when successful,
-    return the negative errno value corresponding to the
-    <parameter>name</parameter> parameter. Functions
-    <function>sd_bus_error_set_errno</function> and
-    <function>sd_bus_error_set_errnof</function>, when successful,
-    return the value of the <parameter>errno</parameter> parameter. If
-    an error occurs, one of the negative error values listed below
-    will be returned.</para>
-
-    <para><function>sd_bus_error_get_errno</function> returns
-    <constant>false</constant> when <parameter>e</parameter> is
-    <constant>NULL</constant>, and a positive errno value mapped from
-    <parameter>e-&gt;name</parameter> otherwise.</para>
-
-    <para><function>sd_bus_error_copy</function> returns 0 or a
-    positive integer on success, and one of the negative error values
-    listed below otherwise.</para>
-
-    <para><function>sd_bus_error_is_set</function> returns
-    <constant>true</constant> when <parameter>e</parameter> and
-    <parameter>e-&gt;name</parameter> are non-<constant>NULL</constant>,
-    <constant>false</constant> otherwise.</para>
-
-    <para><function>sd_bus_error_has_name</function> returns
-    <constant>true</constant> when <parameter>e</parameter> is
-    non-<constant>NULL</constant> and <parameter>e-&gt;name</parameter>
-    is equal to <parameter>name</parameter>,
-    <constant>false</constant> otherwise.</para>
-  </refsect1>
-
-  <refsect1>
-    <title>Reference ownership</title>
-    <para><structname>sd_bus_error</structname> is not reference
-    counted. Users should destroy resources held by it by calling
-    <function>sd_bus_error_free</function>.</para>
-  </refsect1>
-
-  <refsect1>
-    <title>Errors</title>
-
-    <para>Returned errors may indicate the following problems:</para>
-
-    <variablelist>
-
-      <varlistentry>
-        <term><constant>-EINVAL</constant></term>
-
-        <listitem><para>Error was already set in
-        <structname>sd_bus_error</structname> structure when one the
-        error-setting functions was called.</para></listitem>
-      </varlistentry>
-
-      <varlistentry>
-        <term><constant>-ENOMEM</constant></term>
-
-        <listitem><para>Memory allocation failed.</para></listitem>
-      </varlistentry>
-    </variablelist>
-  </refsect1>
-
-  <refsect1>
-    <title>Notes</title>
-
-    <para><function>sd_bus_set_error()</function> and other functions
-    described here 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-bus</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
-      <citerefentry project='man-pages'><refentrytitle>errno</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
-      <citerefentry project='die-net'><refentrytitle>strerror</refentrytitle><manvolnum>3</manvolnum></citerefentry>
-    </para>
-  </refsect1>
-
-</refentry>