<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>KADM5 hook interface (kadm5_hook) — MIT Kerberos Documentation</title>
<link rel="stylesheet" href="../_static/agogo.css" type="text/css" />
<link rel="stylesheet" href="../_static/pygments.css" type="text/css" />
<link rel="stylesheet" href="../_static/kerb.css" type="text/css" />
<script type="text/javascript">
var DOCUMENTATION_OPTIONS = {
URL_ROOT: '../',
VERSION: '1.18.2',
COLLAPSE_INDEX: false,
FILE_SUFFIX: '.html',
HAS_SOURCE: true,
SOURCELINK_SUFFIX: '.txt'
};
</script>
<script type="text/javascript" src="../_static/jquery.js"></script>
<script type="text/javascript" src="../_static/underscore.js"></script>
<script type="text/javascript" src="../_static/doctools.js"></script>
<link rel="author" title="About these documents" href="../about.html" />
<link rel="index" title="Index" href="../genindex.html" />
<link rel="search" title="Search" href="../search.html" />
<link rel="copyright" title="Copyright" href="../copyright.html" />
<link rel="next" title="kadmin authorization interface (kadm5_auth)" href="kadm5_auth.html" />
<link rel="prev" title="Password quality interface (pwqual)" href="pwqual.html" />
</head>
<body>
<div class="header-wrapper">
<div class="header">
<h1><a href="../index.html">MIT Kerberos Documentation</a></h1>
<div class="rel">
<a href="../index.html" title="Full Table of Contents"
accesskey="C">Contents</a> |
<a href="pwqual.html" title="Password quality interface (pwqual)"
accesskey="P">previous</a> |
<a href="kadm5_auth.html" title="kadmin authorization interface (kadm5_auth)"
accesskey="N">next</a> |
<a href="../genindex.html" title="General Index"
accesskey="I">index</a> |
<a href="../search.html" title="Enter search criteria"
accesskey="S">Search</a> |
<a href="mailto:krb5-bugs@mit.edu?subject=Documentation__KADM5 hook interface (kadm5_hook)">feedback</a>
</div>
</div>
</div>
<div class="content-wrapper">
<div class="content">
<div class="document">
<div class="documentwrapper">
<div class="bodywrapper">
<div class="body" role="main">
<div class="section" id="kadm5-hook-interface-kadm5-hook">
<span id="kadm5-hook-plugin"></span><h1>KADM5 hook interface (kadm5_hook)<a class="headerlink" href="#kadm5-hook-interface-kadm5-hook" title="Permalink to this headline">ΒΆ</a></h1>
<p>The kadm5_hook interface allows modules to perform actions when
changes are made to the Kerberos database through <a class="reference internal" href="../admin/admin_commands/kadmin_local.html#kadmin-1"><span class="std std-ref">kadmin</span></a>.
For a detailed description of the kadm5_hook interface, see the header
file <code class="docutils literal"><span class="pre"><krb5/kadm5_hook_plugin.h></span></code>.</p>
<p>The kadm5_hook interface has five primary methods: <strong>chpass</strong>,
<strong>create</strong>, <strong>modify</strong>, <strong>remove</strong>, and <strong>rename</strong>. (The <strong>rename</strong>
method was introduced in release 1.14.) Each of these methods is
called twice when the corresponding administrative action takes place,
once before the action is committed and once afterwards. A module can
prevent the action from taking place by returning an error code during
the pre-commit stage.</p>
<p>A module can create and destroy per-process state objects by
implementing the <strong>init</strong> and <strong>fini</strong> methods. State objects have
the type kadm5_hook_modinfo, which is an abstract pointer type. A
module should typically cast this to an internal type for the state
object.</p>
<p>Because the kadm5_hook interface is tied closely to the kadmin
interface (which is explicitly unstable), it may not remain as stable
across versions as other public pluggable interfaces.</p>
</div>
</div>
</div>
</div>
</div>
<div class="sidebar">
<h2>On this page</h2>
<ul>
<li><a class="reference internal" href="#">KADM5 hook interface (kadm5_hook)</a></li>
</ul>
<br/>
<h2>Table of contents</h2>
<ul class="current">
<li class="toctree-l1"><a class="reference internal" href="../user/index.html">For users</a></li>
<li class="toctree-l1"><a class="reference internal" href="../admin/index.html">For administrators</a></li>
<li class="toctree-l1"><a class="reference internal" href="../appdev/index.html">For application developers</a></li>
<li class="toctree-l1 current"><a class="reference internal" href="index.html">For plugin module developers</a><ul class="current">
<li class="toctree-l2"><a class="reference internal" href="general.html">General plugin concepts</a></li>
<li class="toctree-l2"><a class="reference internal" href="clpreauth.html">Client preauthentication interface (clpreauth)</a></li>
<li class="toctree-l2"><a class="reference internal" href="kdcpreauth.html">KDC preauthentication interface (kdcpreauth)</a></li>
<li class="toctree-l2"><a class="reference internal" href="ccselect.html">Credential cache selection interface (ccselect)</a></li>
<li class="toctree-l2"><a class="reference internal" href="pwqual.html">Password quality interface (pwqual)</a></li>
<li class="toctree-l2 current"><a class="current reference internal" href="#">KADM5 hook interface (kadm5_hook)</a></li>
<li class="toctree-l2"><a class="reference internal" href="kadm5_auth.html">kadmin authorization interface (kadm5_auth)</a></li>
<li class="toctree-l2"><a class="reference internal" href="hostrealm.html">Host-to-realm interface (hostrealm)</a></li>
<li class="toctree-l2"><a class="reference internal" href="localauth.html">Local authorization interface (localauth)</a></li>
<li class="toctree-l2"><a class="reference internal" href="locate.html">Server location interface (locate)</a></li>
<li class="toctree-l2"><a class="reference internal" href="profile.html">Configuration interface (profile)</a></li>
<li class="toctree-l2"><a class="reference internal" href="gssapi.html">GSSAPI mechanism interface</a></li>
<li class="toctree-l2"><a class="reference internal" href="internal.html">Internal pluggable interfaces</a></li>
<li class="toctree-l2"><a class="reference internal" href="certauth.html">PKINIT certificate authorization interface (certauth)</a></li>
<li class="toctree-l2"><a class="reference internal" href="kdcpolicy.html">KDC policy interface (kdcpolicy)</a></li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="../build/index.html">Building Kerberos V5</a></li>
<li class="toctree-l1"><a class="reference internal" href="../basic/index.html">Kerberos V5 concepts</a></li>
<li class="toctree-l1"><a class="reference internal" href="../formats/index.html">Protocols and file formats</a></li>
<li class="toctree-l1"><a class="reference internal" href="../mitK5features.html">MIT Kerberos features</a></li>
<li class="toctree-l1"><a class="reference internal" href="../build_this.html">How to build this documentation from the source</a></li>
<li class="toctree-l1"><a class="reference internal" href="../about.html">Contributing to the MIT Kerberos Documentation</a></li>
<li class="toctree-l1"><a class="reference internal" href="../resources.html">Resources</a></li>
</ul>
<br/>
<h4><a href="../index.html">Full Table of Contents</a></h4>
<h4>Search</h4>
<form class="search" action="../search.html" method="get">
<input type="text" name="q" size="18" />
<input type="submit" value="Go" />
<input type="hidden" name="check_keywords" value="yes" />
<input type="hidden" name="area" value="default" />
</form>
</div>
<div class="clearer"></div>
</div>
</div>
<div class="footer-wrapper">
<div class="footer" >
<div class="right" ><i>Release: 1.18.2</i><br />
© <a href="../copyright.html">Copyright</a> 1985-2020, MIT.
</div>
<div class="left">
<a href="../index.html" title="Full Table of Contents"
>Contents</a> |
<a href="pwqual.html" title="Password quality interface (pwqual)"
>previous</a> |
<a href="kadm5_auth.html" title="kadmin authorization interface (kadm5_auth)"
>next</a> |
<a href="../genindex.html" title="General Index"
>index</a> |
<a href="../search.html" title="Enter search criteria"
>Search</a> |
<a href="mailto:krb5-bugs@mit.edu?subject=Documentation__KADM5 hook interface (kadm5_hook)">feedback</a>
</div>
</div>
</div>
</body>
</html>