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diff --git a/doc/man/pam_start.3.xml b/doc/man/pam_start.3.xml new file mode 100644 index 0000000..1d544e6 --- /dev/null +++ b/doc/man/pam_start.3.xml @@ -0,0 +1,167 @@ +<?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_start'> + + <refmeta> + <refentrytitle>pam_start</refentrytitle> + <manvolnum>3</manvolnum> + <refmiscinfo class='setdesc'>Linux-PAM Manual</refmiscinfo> + </refmeta> + + <refnamediv id="pam_start-name"> + <refname>pam_start</refname> + <refname>pam_start_confdir</refname> + <refpurpose>initialization of PAM transaction</refpurpose> + </refnamediv> + +<!-- body begins here --> + + <refsynopsisdiv> + <funcsynopsis id="pam_start-synopsis"> + <funcsynopsisinfo>#include <security/pam_appl.h></funcsynopsisinfo> + <funcprototype> + <funcdef>int <function>pam_start</function></funcdef> + <paramdef>const char *<parameter>service_name</parameter></paramdef> + <paramdef>const char *<parameter>user</parameter></paramdef> + <paramdef>const struct pam_conv *<parameter>pam_conversation</parameter></paramdef> + <paramdef>pam_handle_t **<parameter>pamh</parameter></paramdef> + </funcprototype> + <funcprototype> + <funcdef>int <function>pam_start_confdir</function></funcdef> + <paramdef>const char *<parameter>service_name</parameter></paramdef> + <paramdef>const char *<parameter>user</parameter></paramdef> + <paramdef>const struct pam_conv *<parameter>pam_conversation</parameter></paramdef> + <paramdef>const char *<parameter>confdir</parameter></paramdef> + <paramdef>pam_handle_t **<parameter>pamh</parameter></paramdef> + </funcprototype> + </funcsynopsis> + </refsynopsisdiv> + + + <refsect1 id="pam_start-description"> + <title>DESCRIPTION</title> + <para> + The <function>pam_start</function> function creates the PAM context + and initiates the PAM transaction. It is the first of the PAM + functions that needs to be called by an application. The transaction + state is contained entirely within the structure identified by this + handle, so it is possible to have multiple transactions in parallel. + But it is not possible to use the same handle for different + transactions, a new one is needed for every new context. + </para> + + <para> + The <emphasis>service_name</emphasis> argument specifies the name + of the service to apply and will be stored as PAM_SERVICE item in + the new context. The policy for the service will be read from the + file <filename>/etc/pam.d/service_name</filename> or, if that file + does not exist, from <filename>/etc/pam.conf</filename>. + </para> + + <para> + The <emphasis>user</emphasis> argument can specify the name + of the target user and will be stored as PAM_USER item. If + the argument is NULL, the module has to ask for this item if + necessary. + </para> + + <para> + The <emphasis>pam_conversation</emphasis> argument points to + a <emphasis>struct pam_conv</emphasis> describing the + conversation function to use. An application must provide this + for direct communication between a loaded module and the + application. + </para> + + <para> + Following a successful return (PAM_SUCCESS) the contents of + <emphasis>pamh</emphasis> is a handle that contains the PAM + context for successive calls to the PAM functions. In an error + case is the content of <emphasis>pamh</emphasis> undefined. + </para> + + <para> + The <emphasis>pam_handle_t</emphasis> is a blind structure and + the application should not attempt to probe it directly for + information. Instead the PAM library provides the functions + <citerefentry> + <refentrytitle>pam_set_item</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> and + <citerefentry> + <refentrytitle>pam_get_item</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>. + The PAM handle cannot be used for multiple authentications at the + same time as long as <function>pam_end</function> was not called on + it before. + </para> + + <para> + The <function>pam_start_confdir</function> function behaves + like the <function>pam_start</function> function but it also + allows setting <emphasis>confdir</emphasis> argument with + a path to a directory to override the default + (<filename>/etc/pam.d</filename>) path for service policy + files. If the <emphasis>confdir</emphasis> is NULL, the function + works exactly the same as <function>pam_start</function>. + </para> + + </refsect1> + <refsect1 id="pam_start-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_SUCCESS</term> + <listitem> + <para> + Transaction was successfully started. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_SYSTEM_ERR</term> + <listitem> + <para> + System error, for example a NULL pointer was submitted + instead of a pointer to data. + </para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1 id="pam_start-see_also"> + <title>SEE ALSO</title> + <para> + <citerefentry> + <refentrytitle>pam_get_data</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_set_data</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_end</refentrytitle><manvolnum>3</manvolnum> + </citerefentry>, + <citerefentry> + <refentrytitle>pam_strerror</refentrytitle><manvolnum>3</manvolnum> + </citerefentry> + </para> + </refsect1> +</refentry> |