SMBADM(1M) Maintenance Commands SMBADM(1M)

NAME


smbadm - configure and manage SMB local groups and users, and manage domain
membership

SYNOPSIS


smbadm create [-d description] group
smbadm delete group
smbadm rename group new-group
smbadm show [-mp] [group]
smbadm get [-p property]... group
smbadm set -p property=value [-p property=value]... group
smbadm add-member -m member [-m member]... group
smbadm remove-member -m member [-m member]... group
smbadm delete-user username
smbadm disable-user username
smbadm enable-user username
smbadm join [-y] -u username domain
smbadm join [-y] -w workgroup
smbadm list
smbadm lookup account-name [account-name]...

DESCRIPTION


The smbadm command is used to configure SMB local groups and users, and to
manage domain membership. You can also use the smbadm command to enable or
disable SMB password generation for individual local users.

SMB local groups can be used when Windows accounts must be members of some
local groups and when Windows style privileges must be granted. System
local groups cannot provide these functions.

There are two types of local groups: user defined and built-in. Built-in
local groups are predefined local groups to support common administration
tasks.

In order to provide proper identity mapping between SMB local groups and
system groups, a SMB local group must have a corresponding system group.
This requirement has two consequences: first, the group name must conform
to the intersection of the Windows and system group name rules. Thus, a
SMB local group name can be up to eight (8) characters long and contain
only lowercase characters and numbers. Second, a system local group has to
be created before a SMB local group can be created.

Built-in groups are standard Windows groups and are predefined by the SMB
service. The built-in groups cannot be added, removed, or renamed, and
these groups do not follow the SMB local group naming conventions.

When the SMB server is started, the following built-in groups are
available:

Administrators Group members can administer the system.

Backup Operators Group members can bypass file access controls to back up
and restore files.

Power Users Group members can share directories.

System local users must have an SMB password for authentication and to gain
access to SMB resources. This password is created by using the passwd(1)
command when the pam_smb_password module is added to the system's PAM
configuration. See the pam_smb_passwd(5) man page.

The disable-user and enable-user subcommands control SMB password-
generation for a specified local user. When disabled, the user is
prevented from connecting to the SMB service. By default, SMB password-
generation is enabled for all local users.

To reenable a disabled user, you must use the enable-user subcommand and
then reset the user's password by using the passwd command. The
pam_smb_passwd.so.1 module must be added to the system's PAM configuration
to generate an SMB password.

Escaping Backslash Character


For the add-member, remove-member, and join (with -u) subcommands, the
backslash character ("\") is a valid separator between member or user names
and domain names. The backslash character is a shell special character and
must be quoted. For example, you might escape the backslash character with
another backslash character: domain\\username. For more information about
handling shell special characters, see the man page for your shell.

OPERANDS


The smbadm command uses the following operands:

domain Specifies the name of an existing Windows domain to join.

group Specifies the name of the SMB local group.

username Specifies the name of a system local user.

SUBCOMMANDS


The smbadm command includes these subcommands:

create [-d description] group
Creates a SMB local group with the specified name. You can
optionally specify a description of the group by using the -d
option.

delete group
Deletes the specified SMB local group. The built-in groups cannot
be deleted.

rename group new-group
Renames the specified SMB local group. The group must already
exist. The built-in groups cannot be renamed.

show [-mp] [group]
Shows information about the specified SMB local group or groups.
If no group is specified, information is shown for all groups. If
the -m option is specified, the group members are also shown. If
the -p option is specified, the group privileges are also shown.

get [-p property=value]... group
Retrieves property values for the specified group. If no property
is specified, all property values are shown.

set -p property=value [-p property=value]... group
Sets configuration properties for a SMB local group. The
description and the privileges for the built-in groups cannot be
changed.

The -p property=value option specifies the list of properties to be
set on the specified group.

The group-related properties are as follows:

backup=on|off
Specifies whether members of the SMB local group can bypass
file access controls to back up file system objects.

description=description-text
Specifies a text description for the SMB local group.

restore=on|off
Specifies whether members of the SMB local group can bypass
file access controls to restore file system objects.

take-ownership=on|off
Specifies whether members of the SMB local group can take
ownership of file system objects.

bypass-read=on|off
Specifies whether members of the SMB local group can always
bypass Read access controls.

bypass-write=on|off
Specifies whether members of the SMB local group can always
bypass Write and Delete access controls.

add-member -m member [-m member]... group
Adds the specified member to the specified SMB local group. The -m
member option specifies the name of a SMB local group member. The
member name must include an existing user name and an optional
domain name.

Specify the member name in either of the following formats:

[domain\]username
[domain/]username

For example, a valid member name might be sales\terry or
sales/terry, where sales is the Windows domain name and terry is
the name of a user in the sales domain.

remove-member -m member [-m member]... group
Removes the specified member from the specified SMB local group.
The -m member option specifies the name of a SMB local group
member. The member name must include an existing user name and an
optional domain name.

Specify the member name in either of the following formats:

[domain\]username
[domain/]username

For example, a valid member name might be sales\terry or
sales/terry, where sales is the Windows domain name and terry is
the name of a user in the sales domain.

delete-user username
Deletes SMB password for the specified local user effectively
preventing the access by means of the SMB service. Use passwd
command to create the SMB password and re-enable access.

disable-user username
Disables SMB password-generation capabilities for the specified
local user effectively preventing access by means of the SMB
service. When a local user account is disabled, you cannot use the
passwd command to modify the user's SMB password until the user
account is re-enabled.

enable-user username
Enables SMB password-generation capabilities for the specified
local user and re-enables access. After the password-generation
capabilities are re-enabled, use the passwd command to generate the
SMB password for the local user.

The passwd command manages both the system password and SMB
password for this user if the pam_smb_passwd module has been added
to the system's PAM configuration.

join [-y] -u username domain
Joins a Windows domain.

An authenticated user account is required to join a domain, so you
must specify the Windows administrative user name with the -u
option. If the password is not specified on the command line, the
user is prompted for it. This user should be the domain
administrator or any user who has administrative privileges for the
target domain.

username and domain can be entered in any of the following formats:

username[+password] domain
domain\username[+password]
domain/username[+password]
username@domain

...where domain can be the NetBIOS or DNS domain name.

If a machine trust account for the system already exists on a
domain controller, any authenticated user account can be used when
joining the domain. However, if the machine trust account does not
already exist, an account that has administrative privileges on the
domain is required to join the domain. Specifying -y will bypass
the SMB service restart prompt.

join [-y] -w workgroup
Joins a Windows workgroup.

The default mode for the SMB service is workgroup mode, which uses
the default workgroup name, "WORKGROUP".

The -w workgroup option specifies the name of the workgroup to join
when using the join subcommand. Specifying -y will bypass the SMB
service restart prompt.

list Shows information about the current workgroup or domain. The
information typically includes the workgroup name or the primary
domain name. When in domain mode, the information includes domain
controller names and trusted domain names.

Each entry in the output is identified by one of the following
tags:

[*] Primary domain

[.] Local domain

[-] Other domains

[+] Selected domain controller

lookup account-name [account-name]...
Lookup the SID for the given account-name, or lookup the
account-name for the given SID. This subcommand is primarily for
diagnostic use, to confirm whether the server can lookup domain
accounts and/or SIDs.

EXIT STATUS


The smbadm utility exits 0 on success, and >0 if an error occurs.

INTERFACE STABILITY


Utility name and options are Uncommitted. Utility output format is
Not-An-Interface.

SEE ALSO


passwd(1), groupadd(1M), idmap(1M), idmapd(1M), kclient(1M), share(1M),
sharectl(1M), sharemgr(1M), smbd(1M), smbstat(1M), smb(4), smbautohome(4),
attributes(5), pam_smb_passwd(5), smf(5)

illumos June 6, 2019 illumos