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<refentry id='pam_send'>

  <refmeta>
    <refentrytitle>pam_open_session</refentrytitle>
    <manvolnum>3</manvolnum>
    <refmiscinfo class='setdesc'>Linux-PAM Manual</refmiscinfo>
  </refmeta>

  <refnamediv id="pam_open_session-name">
    <refname>pam_open_session</refname>
    <refpurpose>start PAM session management</refpurpose>
  </refnamediv>

<!-- body begins here -->

  <refsynopsisdiv>
    <funcsynopsis id="pam_open_session-synopsis">
      <funcsynopsisinfo>#include &lt;security/pam_appl.h&gt;</funcsynopsisinfo>
      <funcprototype>
        <funcdef>int <function>pam_open_session</function></funcdef>
        <paramdef>pam_handle_t *<parameter>pamh</parameter></paramdef>
        <paramdef>int <parameter>flags</parameter></paramdef>
      </funcprototype>
    </funcsynopsis>
  </refsynopsisdiv>


  <refsect1 id="pam_open_session-description">
    <title>DESCRIPTION</title>
    <para>
      The <function>pam_open_session</function> function sets up a
      user session for a previously successful authenticated user.
      The session should later be terminated with a call to
      <citerefentry>
        <refentrytitle>pam_close_session</refentrytitle><manvolnum>3</manvolnum>
      </citerefentry>.
    </para>
    <para>
      It should be noted that the effective uid,
      <citerefentry>
        <refentrytitle>geteuid</refentrytitle><manvolnum>2</manvolnum>
      </citerefentry>. of the application should be of sufficient
      privilege to perform such tasks as creating or mounting the
      user's home directory for example.
    </para>
    <para>
      The flags argument is the binary or of zero or more of the
      following values:
    </para>
    <variablelist>
      <varlistentry>
        <term>PAM_SILENT</term>
        <listitem>
           <para>
             Do not emit any messages.
          </para>
        </listitem>
      </varlistentry>
    </variablelist>
  </refsect1>

  <refsect1 id="pam_open_session-return_values">
    <title>RETURN VALUES</title>
    <variablelist>
      <varlistentry>
        <term>PAM_ABORT</term>
        <listitem>
           <para>
              General failure.
          </para>
        </listitem>
      </varlistentry>
      <varlistentry>
        <term>PAM_BUF_ERR</term>
        <listitem>
           <para>
              Memory buffer error.
          </para>
        </listitem>
      </varlistentry>
      <varlistentry>
        <term>PAM_SESSION_ERR</term>
        <listitem>
           <para>
             Session failure.
          </para>
        </listitem>
      </varlistentry>
      <varlistentry>
        <term>PAM_SUCCESS</term>
        <listitem>
           <para>
             Session was successful created.
          </para>
        </listitem>
      </varlistentry>
    </variablelist>
  </refsect1>

  <refsect1 id="pam_open_session-see_also">
    <title>SEE ALSO</title>
    <para>
      <citerefentry>
        <refentrytitle>pam_close_session</refentrytitle><manvolnum>3</manvolnum>
      </citerefentry>,
      <citerefentry>
        <refentrytitle>pam_strerror</refentrytitle><manvolnum>3</manvolnum>
      </citerefentry>
    </para>
  </refsect1>
</refentry>