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<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Chapter 2. What can be expected by the module</title><meta name="generator" content="DocBook XSL Stylesheets Vsnapshot"><link rel="home" href="Linux-PAM_MWG.html" title="The Linux-PAM Module Writers' Guide"><link rel="up" href="Linux-PAM_MWG.html" title="The Linux-PAM Module Writers' Guide"><link rel="prev" href="mwg-introduction-synopsis.html" title="1.2. Synopsis"><link rel="next" href="mwg-expected-by-module-item.html" title="2.1.  Getting and setting PAM_ITEMs and data"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 2. What can be expected by the module</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="mwg-introduction-synopsis.html">Prev</a> </td><th width="60%" align="center"> </th><td width="20%" align="right"> <a accesskey="n" href="mwg-expected-by-module-item.html">Next</a></td></tr></table><hr></div><div class="chapter"><div class="titlepage"><div><div><h1 class="title"><a name="mwg-expected-by-module"></a>Chapter 2. What can be expected by the module</h1></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl class="toc"><dt><span class="section"><a href="mwg-expected-by-module-item.html">2.1. 
        Getting and setting <span class="emphasis"><em>PAM_ITEM</em></span>s and
        <span class="emphasis"><em>data</em></span>
      </a></span></dt><dd><dl><dt><span class="section"><a href="mwg-expected-by-module-item.html#mwg-pam_set_data">2.1.1. Set module internal data</a></span></dt><dt><span class="section"><a href="mwg-expected-by-module-item.html#mwg-pam_get_data">2.1.2. Get module internal data</a></span></dt><dt><span class="section"><a href="mwg-expected-by-module-item.html#mwg-pam_set_item">2.1.3. Setting PAM items</a></span></dt><dt><span class="section"><a href="mwg-expected-by-module-item.html#mwg-pam_get_item">2.1.4. Getting PAM items</a></span></dt><dt><span class="section"><a href="mwg-expected-by-module-item.html#mwg-pam_get_user">2.1.5. Get user name</a></span></dt><dt><span class="section"><a href="mwg-expected-by-module-item.html#mwg-pam_conv">2.1.6. The conversation function</a></span></dt><dt><span class="section"><a href="mwg-expected-by-module-item.html#adg-pam_putenv">2.1.7. Set or change PAM environment variable</a></span></dt><dt><span class="section"><a href="mwg-expected-by-module-item.html#adg-pam_getenv">2.1.8. Get a PAM environment variable</a></span></dt><dt><span class="section"><a href="mwg-expected-by-module-item.html#adg-pam_getenvlist">2.1.9. Getting the PAM environment</a></span></dt></dl></dd><dt><span class="section"><a href="mwg-expected-by-module-other.html">2.2. 
        Other functions provided by <code class="filename">libpam</code>
      </a></span></dt><dd><dl><dt><span class="section"><a href="mwg-expected-by-module-other.html#adg-pam_strerror">2.2.1. Strings describing PAM error codes</a></span></dt><dt><span class="section"><a href="mwg-expected-by-module-other.html#adg-pam_fail_delay">2.2.2. Request a delay on failure</a></span></dt></dl></dd></dl></div><p>
      Here we list the interface that the conventions that all
      <span class="emphasis"><em>Linux-PAM</em></span> modules must adhere to.
    </p></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="mwg-introduction-synopsis.html">Prev</a> </td><td width="20%" align="center"> </td><td width="40%" align="right"> <a accesskey="n" href="mwg-expected-by-module-item.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">1.2. Synopsis </td><td width="20%" align="center"><a accesskey="h" href="Linux-PAM_MWG.html">Home</a></td><td width="40%" align="right" valign="top"> 2.1. 
        Getting and setting <span class="emphasis"><em>PAM_ITEM</em></span>s and
        <span class="emphasis"><em>data</em></span>
      </td></tr></table></div></body></html>