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="idmap_rid.8">
6 <refentrytitle>idmap_rid</refentrytitle>
7 <manvolnum>8</manvolnum>
8 <refmiscinfo class="source">Samba</refmiscinfo>
9 <refmiscinfo class="manual">System Administration tools</refmiscinfo>
10 <refmiscinfo class="version">3.2</refmiscinfo>
15 <refname>idmap_rid</refname>
16 <refpurpose>Samba's idmap_rid Backend for Winbind</refpurpose>
20 <title>DESCRIPTION</title>
21 <para>The idmap_rid backend provides a way to use an algorithmic
22 mapping scheme to map UIDs/GIDs and SIDs. No database is required
23 in this case as the mapping is deterministic.</para>
27 <title>IDMAP OPTIONS</title>
31 <term>range = low - high</term>
33 Defines the available matching uid and gid range for which the
34 backend is authoritative. Note that the range acts as a filter.
35 If algorithmically determined UID or GID fall outside the
36 range, they are ignored and the corresponding map is discarded.
37 It is intended as a way to avoid accidental UID/GID overlaps
38 between local and remotely defined IDs.
43 <term>base_rid = INTEGER</term>
45 Defines the base integer used to build SIDs out of an UID or a GID,
46 and to rebase the UID or GID to be obtained from a SID. User RIDs
47 by default start at 1000 (512 hexadecimal), this means a good value
48 for base_rid can be 1000 as the resulting ID is calculated this way:
49 ID = RID - BASE_RID + LOW RANGE ID.
56 <title>EXAMPLES</title>
57 <para>This example shows how to configure 2 domains with idmap_rid</para>
61 idmap domains = MAIN TRUSTED1
63 idmap config MAIN:backend = rid
64 idmap config MAIN:base_rid = 0
65 idmap config MAIN:range = 10000 - 49999
67 idmap config TRUSTED1:backend = rid
68 idmap config TRUSTED1:base_rid = 1000
69 idmap config TRUSTED1:range = 50000 - 99999
77 The original Samba software and related utilities
78 were created by Andrew Tridgell. Samba is now developed
79 by the Samba Team as an Open Source project similar
80 to the way the Linux kernel is developed.