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'\" t
.\" Title: idmap_hash
.\" Author: [see the "AUTHOR" section]
.\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/>
.\" Date: 02/21/2015
.\" Manual: System Administration tools
.\" Source: Samba 4.0
.\" Language: English
.\"
.TH "IDMAP_HASH" "8" "02/21/2015" "Samba 4\&.0" "System Administration tools"
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.SH "NAME"
idmap_hash \- Samba\*(Aqs idmap_hash Backend for Winbind
.SH "DESCRIPTION"
.PP
The idmap_hash plugin implements a hashing algorithm used to map SIDs for domain users and groups to 31\-bit uids and gids, respectively\&. This plugin also implements the nss_info API and can be used to support a local name mapping files if enabled via the "winbind normalize names" and "winbind nss info" parameters in smb\&.conf\&.
.SH "IDMAP OPTIONS"
.PP
name_map
.RS 4
Specifies the absolute path to the name mapping file used by the nss_info API\&. Entries in the file are of the form "\fIunix name\fR
=
\fIqualified domain name\fR"\&. Mapping of both user and group names is supported\&.
.RE
.SH "EXAMPLES"
.PP
The following example utilizes the idmap_hash plugin for the idmap and nss_info information\&.
.sp
.if n \{\
.RS 4
.\}
.nf
[global]
idmap config * : backend = hash
idmap config * : range = 1000\-4000000000
winbind nss info = hash
winbind normalize names = yes
idmap_hash:name_map = /etc/samba/name_map\&.cfg
.fi
.if n \{\
.RE
.\}
.SH "AUTHOR"
.PP
The original Samba software and related utilities were created by Andrew Tridgell\&. Samba is now developed by the Samba Team as an Open Source project similar to the way the Linux kernel is developed\&.
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