docs-xml/manpages-3/cifs.upcall.8.xml

   1 <?xml version="1.0" encoding="iso-8859-1"?>
   2 <!DOCTYPE refentry PUBLIC "-//Samba-Team//DTD DocBook V4.2-Based Variant V1.0//EN" "http://www.samba.org/samba/DTD/samba-doc">
   3 <refentry id="cifs.upcall.8">
   4
   5
   6 <refmeta>
   7         <refentrytitle>cifs.upcall</refentrytitle>
   8         <manvolnum>8</manvolnum>
   9         <refmiscinfo class="source">Samba</refmiscinfo>
  10         <refmiscinfo class="manual">System Administration tools</refmiscinfo>
  11         <refmiscinfo class="version">3.2</refmiscinfo>
  12 </refmeta>
  13
  14 <refnamediv>
  15         <refname>cifs.upcall</refname>
  16         <refpurpose>Userspace upcall helper for Common Internet File System (CIFS)</refpurpose>
  17 </refnamediv>
  18
  19 <refsynopsisdiv>
  20         <cmdsynopsis>
  21                 <command>cifs.upcall</command>
  22                 <arg choice="opt">-c</arg>
  23                 <arg choice="opt">-v</arg>
  24                 <arg choice="req">keyid</arg>
  25         </cmdsynopsis>
  26 </refsynopsisdiv>
  27
  28
  29 <refsect1>
  30         <title>DESCRIPTION</title>
  31
  32         <para>This tool is part of the <citerefentry><refentrytitle>samba</refentrytitle>
  33         <manvolnum>7</manvolnum></citerefentry> suite.</para>
  34
  35 <para>cifs.upcall is a userspace helper program for the linux CIFS client
  36 filesystem. There are a number of activities that the kernel cannot easily
  37 do itself. This program is a callout program that does these things for the
  38 kernel and then returns the result.</para>
  39
  40 <para>cifs.upcall is generally intended to be run when the kernel calls
  41 request-key<manvolnum>8</manvolnum> for a particular key type. While it
  42 can be run directly from the command-line, it's not generally intended
  43 to be run that way.</para>
  44 </refsect1>
  45
  46 <refsect1>
  47         <title>OPTIONS</title>
  48         <variablelist>
  49                 <varlistentry>
  50                 <term>-c</term>
  51                 <listitem><para>When handling a kerberos upcall, use a service principal that starts with "cifs/". The default is to use the "host/" service principal.
  52                 </para></listitem>
  53                 </varlistentry>
  54
  55                 <varlistentry>
  56                 <term>-v</term>
  57                 <listitem><para>Print version number and exit.
  58                 </para></listitem>
  59                 </varlistentry>
  60         </variablelist>
  61 </refsect1>
  62
  63 <refsect1>
  64         <title>CONFIGURATION FOR KEYCTL</title>
  65         <para>cifs.upcall is designed to be called from the kernel via the
  66         request-key callout program. This requires that request-key be told
  67         where and how to call this program. The current cifs.upcall program
  68         handles two different key types:
  69         </para>
  70
  71         <variablelist>
  72                 <varlistentry>
  73                 <term>cifs.spnego</term>
  74                 <listitem><para>This keytype is for retrieving kerberos session keys
  75                 </para></listitem>
  76                 </varlistentry>
  77
  78                 <varlistentry>
  79                 <term>dns_resolver</term>
  80                 <listitem><para>This key type is for resolving hostnames into IP addresses
  81                 </para></listitem>
  82                 </varlistentry>
  83         </variablelist>
  84
  85         <para>To make this program useful for CIFS, you'll need to set up entries for them in request-key.conf<manvolnum>5</manvolnum>. Here's an example of an entry for each key type:</para>
  86 <programlisting>
  87 #OPERATION  TYPE           D C PROGRAM ARG1 ARG2...
  88 #=========  =============  = = ==========================================
  89 create      cifs.spnego    * * /usr/local/sbin/cifs.upcall -c %k
  90 create      dns_resolver   * * /usr/local/sbin/cifs.upcall %k
  91 </programlisting>
  92 <para>
  93 See <citerefentry><refentrytitle>request-key.conf<manvolnum>5</manvolnum></refentrytitle></citerefentry> for more info on each field.
  94 </para>
  95 </refsect1>
  96
  97 <refsect1>
  98         <title>SEE ALSO</title>
  99         <para>
 100         <citerefentry><refentrytitle>request-key.conf</refentrytitle>
 101         <manvolnum>5</manvolnum></citerefentry>,
 102         <citerefentry><refentrytitle>mount.cifs</refentrytitle>
 103         <manvolnum>8</manvolnum></citerefentry>
 104         </para>
 105 </refsect1>
 106
 107 <refsect1>
 108         <title>AUTHOR</title>
 109
 110         <para>Igor Mammedov wrote the cifs.upcall program.</para>
 111         <para>Jeff Layton authored this manpage.</para>
 112         <para>The maintainer of the Linux CIFS VFS is Steve French.</para>
 113         <para>The <ulink url="mailto:linux-cifs-client@lists.samba.org">Linux
 114                 CIFS Mailing list</ulink> is the preferred place to ask
 115                 questions regarding these programs.
 116         </para>
 117 </refsect1>
 118
 119 </refentry>