of trying to obtain the user from the login session
            associated with the terminal in use.
          </p></dd></dl></div></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="sag-pam_wheel-types"></a>6.42.3. MODULE TYPES PROVIDED</h3></div></div></div><p>
      The <span class="emphasis"><em>auth</em></span> and
      <span class="emphasis"><em>account</em></span> module types are provided.
    </p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="sag-pam_wheel-return_values"></a>6.42.4. RETURN VALUES</h3></div></div></div><div class="variablelist"><dl class="variablelist"><dt><span class="term">PAM_AUTH_ERR</span></dt><dd><p>
             Authentication failure.
          </p></dd><dt><span class="term">PAM_BUF_ERR</span></dt><dd><p>
             Memory buffer error.
          </p></dd><dt><span class="term">PAM_IGNORE</span></dt><dd><p>
            The return value should be ignored by PAM dispatch.
          </p></dd><dt><span class="term">PAM_PERM_DENY</span></dt><dd><p>
            Permission denied.
          </p></dd><dt><span class="term">PAM_SERVICE_ERR</span></dt><dd><p>
	    Cannot determine the user name.
          </p></dd><dt><span class="term">PAM_SUCCESS</span></dt><dd><p>
            Success.
          </p></dd><dt><span class="term">PAM_USER_UNKNOWN</span></dt><dd><p>
            User not known.
          </p></dd></dl></div></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="sag-pam_wheel-examples"></a>6.42.5. EXAMPLES</h3></div></div></div><p>
      The root account gains access by default (rootok), only wheel
      members can become root (wheel) but Unix authenticate non-root
      applicants.
      </p><pre class="programlisting">
su      auth     sufficient     pam_rootok.so
su      auth     required       pam_wheel.so
su      auth     required       pam_unix.so
      </pre><p>
    </p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="sag-pam_wheel-author"></a>6.42.6. AUTHOR</h3></div></div></div><p>
        pam_wheel was written by Cristian Gafton &lt;gafton@redhat.com&gt;.
      </p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="sag-pam_warn.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="sag-module-reference.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="sag-pam_xauth.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">6.41. pam_warn - logs all PAM items </td><td width="20%" align="center"><a accesskey="h" href="Linux-PAM_SAG.html">Home</a></td><td width="40%" align="right" valign="top"> 6.43. pam_xauth - forward xauth keys between users</td></tr></table></div></body></html>