man: fix link markup

[thirdparty/systemd.git] / man / sd_bus_interface_name_is_valid.xml

<?xml version='1.0'?>
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
  "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
<!-- SPDX-License-Identifier: LGPL-2.1+ -->

<refentry id="sd_bus_interface_name_is_valid" xmlns:xi="http://www.w3.org/2001/XInclude">
  <refentryinfo>
    <title>sd_bus_interface_name_is_valid</title>
    <productname>systemd</productname>
  </refentryinfo>

  <refmeta>
    <refentrytitle>sd_bus_interface_name_is_valid</refentrytitle>
    <manvolnum>3</manvolnum>
  </refmeta>

  <refnamediv>
    <refname>sd_bus_interface_name_is_valid</refname>
    <refname>sd_bus_service_name_is_valid</refname>
    <refname>sd_bus_member_name_is_valid</refname>
    <refname>sd_bus_object_path_is_valid</refname>

    <refpurpose>Check if a string is a valid bus name or object path</refpurpose>
  </refnamediv>

  <refsynopsisdiv>
    <funcsynopsis>
      <funcsynopsisinfo>#include &lt;systemd/sd-bus.h&gt;</funcsynopsisinfo>

      <funcprototype>
        <funcdef>int <function>sd_bus_interface_name_is_valid</function></funcdef>
        <paramdef>const char* <parameter>p</parameter></paramdef>
      </funcprototype>

      <funcprototype>
        <funcdef>int <function>sd_bus_service_name_is_valid</function></funcdef>
        <paramdef>const char* <parameter>p</parameter></paramdef>
      </funcprototype>

      <funcprototype>
        <funcdef>int <function>sd_bus_member_name_is_valid</function></funcdef>
        <paramdef>const char* <parameter>p</parameter></paramdef>
      </funcprototype>

      <funcprototype>
        <funcdef>int <function>sd_bus_object_path_is_valid</function></funcdef>
        <paramdef>const char* <parameter>p</parameter></paramdef>
      </funcprototype>
    </funcsynopsis>
  </refsynopsisdiv>

  <refsect1>
    <title>Description</title>

    <para><function>sd_bus_interface_name_is_valid()</function> checks if a given string
    <parameter>p</parameter> is a syntactically valid bus interface name. Similarly,
    <function>sd_bus_service_name_is_valid()</function> checks if the argument is a valid bus service name,
    <function>sd_bus_member_name_is_valid()</function> checks if the argument is a valid bus interface member
    name, and <function>sd_bus_object_path_is_valid()</function> checks if the argument is a valid bus object
    path. Those functions generally check that only allowed characters are used and that the length of the
    string is within limits.</para>
  </refsect1>

  <refsect1>
    <title>Return Value</title>

    <para>Those functions return 1 if the argument is a valid interface / service / member name or object
    path, and 0 if it is not. If the argument is NULL, an error is returned.</para>

    <refsect2>
      <title>Errors</title>

      <para>Returned errors may indicate the following problems:</para>

      <variablelist>
        <varlistentry>
          <term><constant>-EINVAL</constant></term>

          <listitem><para>The <parameter>p</parameter> parameter is
          <constant>NULL</constant>.</para></listitem>
        </varlistentry>
      </variablelist>
    </refsect2>
  </refsect1>

  <xi:include href="libsystemd-pkgconfig.xml" />

  <refsect1>
    <title>See Also</title>

    <para>
      <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
      <citerefentry><refentrytitle>sd-bus</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
      <citerefentry><refentrytitle>sd_bus_call_method</refentrytitle><manvolnum>3</manvolnum></citerefentry>
    </para>
  </refsect1>

</refentry>