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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
+ "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd">
+
+<refentry id="pam_setcred">
+
+ <refmeta>
+ <refentrytitle>pam_setcred</refentrytitle>
+ <manvolnum>3</manvolnum>
+ <refmiscinfo class='setdesc'>Linux-PAM Manual</refmiscinfo>
+ </refmeta>
+
+ <refnamediv id="pam_setcred-name">
+ <refname>pam_setcred</refname>
+ <refpurpose>
+ establish / delete user credentials
+ </refpurpose>
+ </refnamediv>
+
+ <!-- body begins here -->
+ <refsynopsisdiv>
+ <funcsynopsis id='pam_setcred-synopsis'>
+ <funcsynopsisinfo>#include &lt;security/pam_appl.h&gt;</funcsynopsisinfo>
+ <funcprototype>
+ <funcdef>int <function>pam_setcred</function></funcdef>
+ <paramdef>pam_handle_t *<parameter>pamh</parameter></paramdef>
+ <paramdef>int <parameter>flags</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+
+ <refsect1 id='pam_setcred-description'>
+ <title>DESCRIPTION</title>
+ <para>
+ The <function>pam_setcred</function> function is used to establish,
+ maintain and delete the credentials of a user. It should be called
+ to set the credentials after a user has been authenticated and before
+ a session is opened for the user (with
+ <citerefentry>
+ <refentrytitle>pam_open_session</refentrytitle><manvolnum>3</manvolnum>
+ </citerefentry>). The credentials should be deleted after the session
+ has been closed (with
+ <citerefentry>
+ <refentrytitle>pam_close_session</refentrytitle><manvolnum>3</manvolnum>
+ </citerefentry>).
+ </para>
+
+ <para>
+ A credential is something that the user possesses. It is some
+ property, such as a <emphasis>Kerberos</emphasis> ticket, or a
+ supplementary group membership that make up the uniqueness of a
+ given user. On a Linux system the user's <emphasis>UID</emphasis>
+ and <emphasis>GID</emphasis>'s are credentials too. However, it
+ has been decided that these properties (along with the default
+ supplementary groups of which the user is a member) are credentials
+ that should be set directly by the application and not by PAM.
+ Such credentials should be established, by the application, prior
+ to a call to this function. For example,
+ <citerefentry>
+ <refentrytitle>initgroups</refentrytitle><manvolnum>2</manvolnum>
+ </citerefentry> (or equivalent) should have been performed.
+ </para>
+
+ <para>
+ Valid <emphasis>flags</emphasis>, any one of which, may be
+ logically OR'd with <option>PAM_SILENT</option>, are:
+ </para>
+
+ <variablelist>
+ <varlistentry>
+ <term>PAM_ESTABLISH_CRED</term>
+ <listitem>
+ <para>Initialize the credentials for the user.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>PAM_DELETE_CRED</term>
+ <listitem>
+ <para>Delete the user's credentials.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>PAM_REINITIALIZE_CRED</term>
+ <listitem>
+ <para>Fully reinitialize the user's credentials.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>PAM_REFRESH_CRED</term>
+ <listitem>
+ <para>Extend the lifetime of the existing credentials.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1 id='pam_setcred-return_values'>
+ <title>RETURN VALUES</title>
+ <variablelist>
+ <varlistentry>
+ <term>PAM_BUF_ERR</term>
+ <listitem>
+ <para>
+ Memory buffer error.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>PAM_CRED_ERR</term>
+ <listitem>
+ <para>
+ Failed to set user credentials.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>PAM_CRED_EXPIRED</term>
+ <listitem>
+ <para>
+ User credentials are expired.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>PAM_CRED_UNAVAIL</term>
+ <listitem>
+ <para>
+ Failed to retrieve user credentials.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>PAM_SUCCESS</term>
+ <listitem>
+ <para>
+ Data was successful stored.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>PAM_SYSTEM_ERR</term>
+ <listitem>
+ <para>
+ A NULL pointer was submitted as PAM handle, the
+ function was called by a module or another system
+ error occurred.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>PAM_USER_UNKNOWN</term>
+ <listitem>
+ <para>
+ User is not known to an authentication module.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ </variablelist>
+ </refsect1>
+
+ <refsect1 id="pam_set_data-see_also">
+ <title>SEE ALSO</title>
+ <para>
+ <citerefentry>
+ <refentrytitle>pam_authenticate</refentrytitle><manvolnum>3</manvolnum>
+ </citerefentry>,
+ <citerefentry>
+ <refentrytitle>pam_open_session</refentrytitle><manvolnum>3</manvolnum>
+ </citerefentry>,
+ <citerefentry>
+ <refentrytitle>pam_close_session</refentrytitle><manvolnum>3</manvolnum>
+ </citerefentry>,
+ <citerefentry>
+ <refentrytitle>pam_strerror</refentrytitle><manvolnum>3</manvolnum>
+ </citerefentry>
+ </para>
+ </refsect1>
+</refentry>