1 <samba:parameter name="add user script"
4 advanced="1" developer="1"
5 xmlns:samba="http://www.samba.org/samba/DTD/samba-doc">
8 This is the full pathname to a script that will be run <emphasis>AS ROOT</emphasis> by
9 <citerefentry><refentrytitle>smbd</refentrytitle> <manvolnum>8</manvolnum></citerefentry>
10 under special circumstances described below.
14 Normally, a Samba server requires that UNIX users are created for all users accessing
15 files on this server. For sites that use Windows NT account databases as their primary
16 user database creating these users and keeping the user list in sync with the Windows
17 NT PDC is an onerous task. This option allows smbd to create the required UNIX users
18 <emphasis>ON DEMAND</emphasis> when a user accesses the Samba server.
22 In order to use this option, <citerefentry><refentrytitle>smbd</refentrytitle>
23 <manvolnum>8</manvolnum></citerefentry> must <emphasis>NOT</emphasis> be set to
24 <smbconfoption name="security">share</smbconfoption> and <smbconfoption name="add user script"/>
25 must be set to a full pathname for a script that will create a UNIX user given one argument of
26 <parameter moreinfo="none">%u</parameter>, which expands into the UNIX user name to create.
30 When the Windows user attempts to access the Samba server, at login (session setup in
31 the SMB protocol) time, <citerefentry><refentrytitle>smbd</refentrytitle>
32 <manvolnum>8</manvolnum></citerefentry> contacts the <smbconfoption name="password server"/>
33 and attempts to authenticate the given user with the given password. If the authentication
34 succeeds then <command moreinfo="none">smbd</command> attempts to find a UNIX user in the UNIX
35 password database to map the Windows user into. If this lookup fails, and
36 <smbconfoption name="add user script"/> is set then <command moreinfo="none">smbd</command> will
37 call the specified script <emphasis>AS ROOT</emphasis>, expanding any
38 <parameter moreinfo="none">%u</parameter> argument to be the user name to create.
42 If this script successfully creates the user then <command moreinfo="none">smbd</command> will
43 continue on as though the UNIX user already existed. In this way, UNIX users are dynamically created to
44 match existing Windows NT accounts.
48 See also <smbconfoption name="security"/>, <smbconfoption name="password server"/>,
49 <smbconfoption name="delete user script"/>.
53 <value type="default"/>
54 <value type="example">/usr/local/samba/bin/add_user %u</value>