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<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>6.30. pam_shells - check for valid login shell</title><meta name="generator" content="DocBook XSL Stylesheets Vsnapshot"><link rel="home" href="Linux-PAM_SAG.html" title="The Linux-PAM System Administrators' Guide"><link rel="up" href="sag-module-reference.html" title="Chapter 6. A reference guide for available modules"><link rel="prev" href="sag-pam_selinux.html" title="6.29. pam_selinux - set the default security context"><link rel="next" href="sag-pam_succeed_if.html" title="6.31. pam_succeed_if - test account characteristics"></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">6.30. pam_shells - check for valid login shell</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="sag-pam_selinux.html">Prev</a> </td><th width="60%" align="center">Chapter 6. A reference guide for available modules</th><td width="20%" align="right"> <a accesskey="n" href="sag-pam_succeed_if.html">Next</a></td></tr></table><hr></div><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="sag-pam_shells"></a>6.30. pam_shells - check for valid login shell</h2></div></div></div><div class="cmdsynopsis"><p><code class="command">pam_shells.so</code> </p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="sag-pam_shells-description"></a>6.30.1. DESCRIPTION</h3></div></div></div><p>
      pam_shells is a PAM module that only allows access to the
      system if the user's shell is listed in <code class="filename">/etc/shells</code>.
    </p><p>
      It also checks if <code class="filename">/etc/shells</code> is a plain
      file and not world writable.
    </p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="sag-pam_shells-options"></a>6.30.2. OPTIONS</h3></div></div></div><p> This module does not recognise any options.</p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="sag-pam_shells-types"></a>6.30.3. MODULE TYPES PROVIDED</h3></div></div></div><p>
      The <code class="option">auth</code> and <code class="option">account</code>
      module types are provided.
    </p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="sag-pam_shells-return_values"></a>6.30.4. RETURN VALUES</h3></div></div></div><div class="variablelist"><dl class="variablelist"><dt><span class="term">PAM_AUTH_ERR</span></dt><dd><p>
             Access to the system was denied.
          </p></dd><dt><span class="term">PAM_SUCCESS</span></dt><dd><p>
            The user's login shell was listed as valid shell in
            <code class="filename">/etc/shells</code>.
          </p></dd><dt><span class="term">PAM_SERVICE_ERR</span></dt><dd><p>
            The module was not able to get the name of the user.
          </p></dd></dl></div></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="sag-pam_shells-examples"></a>6.30.5. EXAMPLES</h3></div></div></div><p>
      </p><pre class="programlisting">
auth  required  pam_shells.so
      </pre><p>
    </p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="sag-pam_shells-author"></a>6.30.6. AUTHOR</h3></div></div></div><p>
        pam_shells was written by Erik Troan &lt;ewt@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_selinux.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_succeed_if.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">6.29. pam_selinux - set the default security context </td><td width="20%" align="center"><a accesskey="h" href="Linux-PAM_SAG.html">Home</a></td><td width="40%" align="right" valign="top"> 6.31. pam_succeed_if - test account characteristics</td></tr></table></div></body></html>

6.30. pam_shells - check for valid login shell

6.30. pam_shells - check for valid login shell
Prev	Chapter 6. A reference guide for available modules	Next

6.30. pam_shells - check for valid login shell

pam_shells.so

6.30.1. DESCRIPTION

pam_shells is a PAM module that only allows access to the system if the user's shell is listed in /etc/shells.

It also checks if /etc/shells is a plain file and not world writable.

6.30.2. OPTIONS

This module does not recognise any options.

6.30.3. MODULE TYPES PROVIDED

The auth and account module types are provided.

6.30.4. RETURN VALUES

PAM_AUTH_ERR: Access to the system was denied.
PAM_SUCCESS: The user's login shell was listed as valid shell in /etc/shells.
PAM_SERVICE_ERR: The module was not able to get the name of the user.

6.30.5. EXAMPLES

auth  required  pam_shells.so

6.30.6. AUTHOR

pam_shells was written by Erik Troan <ewt@redhat.com>.

Prev	Up	Next
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