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<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>3.3. Account management</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="mwg-expected-of-module.html" title="Chapter 3. What is expected of a module"><link rel="prev" href="mwg-expected-of-module-auth.html" title="3.2. Authentication management"><link rel="next" href="mwg-expected-of-module-session.html" title="3.4. Session management"></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">3.3. Account management</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="mwg-expected-of-module-auth.html">Prev</a> </td><th width="60%" align="center">Chapter 3. What is expected of a module</th><td width="20%" align="right"> <a accesskey="n" href="mwg-expected-of-module-session.html">Next</a></td></tr></table><hr></div><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="mwg-expected-of-module-acct"></a>3.3. Account management</h2></div></div></div><p>
        To be correctly initialized, <em class="parameter"><code>PAM_SM_ACCOUNT</code></em>
        must be <span class="command"><strong>#define</strong></span>'d prior to including
        <code class="function">&lt;security/pam_modules.h&gt;</code>. This will
        ensure that the prototypes for static modules are properly declared.
      </p><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="mwg-pam_sm_acct_mgmt"></a>3.3.1. Service function for account management</h3></div></div></div><div class="funcsynopsis"><pre class="funcsynopsisinfo">#define PAM_SM_ACCOUNT</pre><pre class="funcsynopsisinfo">#include &lt;security/pam_modules.h&gt;</pre><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">int <b class="fsfunc">pam_sm_acct_mgmt</b>(</code></td><td><var class="pdparam">pamh</var>, </td><td> </td></tr><tr><td> </td><td><var class="pdparam">flags</var>, </td><td> </td></tr><tr><td> </td><td><var class="pdparam">argc</var>, </td><td> </td></tr><tr><td> </td><td><var class="pdparam">argv</var><code>)</code>;</td><td> </td></tr></table><div class="paramdef-list"><code>pam_handle_t *<var class="pdparam">pamh</var></code>;<br><code>int <var class="pdparam">flags</var></code>;<br><code>int <var class="pdparam">argc</var></code>;<br><code>const char **<var class="pdparam">argv</var></code>;</div><div class="funcprototype-spacer"> </div></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="mwg-pam_sm_acct_mgmt-description"></a>3.3.1.1. DESCRIPTION</h4></div></div></div><p>
      The <code class="function">pam_sm_acct_mgmt</code> function is the service
      module's implementation of the
      <span class="citerefentry"><span class="refentrytitle">pam_acct_mgmt</span>(3)</span> interface.
    </p><p>
      This function performs the task of establishing whether the user is
      permitted to gain access at this time. It should be understood that
      the user has previously been validated by an authentication
      module. This function checks for other things. Such things might be:
      the time of day or the date, the terminal line, remote hostname, etc.
      This function may also determine things like the expiration on
      passwords, and respond that the user change it before continuing.
    </p><p>
       Valid flags, which may be logically OR'd with
       <span class="emphasis"><em>PAM_SILENT</em></span>, are:
    </p><div class="variablelist"><dl class="variablelist"><dt><span class="term">PAM_SILENT</span></dt><dd><p>
             Do not emit any messages.
          </p></dd><dt><span class="term">PAM_DISALLOW_NULL_AUTHTOK</span></dt><dd><p>
            Return <span class="emphasis"><em>PAM_AUTH_ERR</em></span> if the
            database of authentication tokens for this authentication
            mechanism has a <span class="emphasis"><em>NULL</em></span> entry for the user.
          </p></dd></dl></div></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="mwg-pam_sm_acct_mgmt-return_values"></a>3.3.1.2. RETURN VALUES</h4></div></div></div><div class="variablelist"><dl class="variablelist"><dt><span class="term">PAM_ACCT_EXPIRED</span></dt><dd><p>
             User account has expired.
          </p></dd><dt><span class="term">PAM_AUTH_ERR</span></dt><dd><p>
            Authentication failure.
          </p></dd><dt><span class="term">PAM_NEW_AUTHTOK_REQD</span></dt><dd><p>
            The user's authentication token has expired. Before calling
            this function again the application will arrange for a new
            one to be given. This will likely result in a call to
            <code class="function">pam_sm_chauthtok()</code>.

          </p></dd><dt><span class="term">PAM_PERM_DENIED</span></dt><dd><p>
            Permission denied.
          </p></dd><dt><span class="term">PAM_SUCCESS</span></dt><dd><p>
             The authentication token was successfully updated.
          </p></dd><dt><span class="term">PAM_USER_UNKNOWN</span></dt><dd><p>
            User unknown to password service.
          </p></dd></dl></div></div></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="mwg-expected-of-module-auth.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="mwg-expected-of-module.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="mwg-expected-of-module-session.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">3.2. Authentication management </td><td width="20%" align="center"><a accesskey="h" href="Linux-PAM_MWG.html">Home</a></td><td width="40%" align="right" valign="top"> 3.4. Session management</td></tr></table></div></body></html>