Provided by: smbclient_4.15.13+dfsg-0ubuntu0.20.04.8_amd64 
NAME
smbcacls - Set or get ACLs on an NT file or directory names
SYNOPSIS
smbcacls {//server/share} {/filename} [-D|--delete=ACL] [-M|--modify=ACL] [-a|--add=ACL]
[-S|--set=ACLS] [-C|--chown=USERNAME] [-G|--chgrp=GROUPNAME] [-I|--inherit=STRING]
[--propagate-inheritance] [--numeric] [--sddl] [--query-security-info=INT]
[--set-security-info=INT] [-t|--test-args] [--domain-sid=SID] [-x|--maximum-access]
[-?|--help] [--usage] [-d|--debuglevel=DEBUGLEVEL] [--debug-stdout]
[--configfile=CONFIGFILE] [--option=name=value] [-l|--log-basename=LOGFILEBASE]
[--leak-report] [--leak-report-full] [-R|--name-resolve=NAME-RESOLVE-ORDER]
[-O|--socket-options=SOCKETOPTIONS] [-m|--max-protocol=MAXPROTOCOL]
[-n|--netbiosname=NETBIOSNAME] [--netbios-scope=SCOPE] [-W|--workgroup=WORKGROUP]
[--realm=REALM] [-U|--user=[DOMAIN/]USERNAME[%PASSWORD]] [-N|--no-pass]
[--password=STRING] [--pw-nt-hash] [-A|--authentication-file=FILE] [-P|--machine-pass]
[--simple-bind-dn=DN] [--use-kerberos=desired|required|off] [--use-krb5-ccache=CCACHE]
[--use-winbind-ccache] [--client-protection=sign|encrypt|off] [-V|--version]
DESCRIPTION
This tool is part of the samba(7) suite.
The smbcacls program manipulates NT Access Control Lists (ACLs) on SMB file shares. An ACL
is comprised zero or more Access Control Entries (ACEs), which define access restrictions
for a specific user or group.
OPTIONS
The following options are available to the smbcacls program. The format of ACLs is
described in the section ACL FORMAT
-a|--add acl
Add the entries specified to the ACL. Existing access control entries are unchanged.
-M|--modify acl
Modify the mask value (permissions) for the ACEs specified on the command line. An
error will be printed for each ACE specified that was not already present in the
object's ACL.
-D|--delete acl
Delete any ACEs specified on the command line. An error will be printed for each ACE
specified that was not already present in the object's ACL.
-S|--set acl
This command sets the ACL on the object with only what is specified on the command
line. Any existing ACL is erased. Note that the ACL specified must contain at least a
revision, type, owner and group for the call to succeed.
-C|--chown name
The owner of a file or directory can be changed to the name given using the -C option.
The name can be a sid in the form S-1-x-y-z or a name resolved against the server
specified in the first argument.
This command is a shortcut for -M OWNER:name.
-G|--chgrp name
The group owner of a file or directory can be changed to the name given using the -G
option. The name can be a sid in the form S-1-x-y-z or a name resolved against the
server specified n the first argument.
This command is a shortcut for -M GROUP:name.
-I|--inherit allow|remove|copy
Set or unset the windows "Allow inheritable permissions" check box using the -I
option. To set the check box pass allow. To unset the check box pass either remove or
copy. Remove will remove all inherited ACEs. Copy will copy all the inherited ACEs.
--propagate-inheritance
Add, modify, delete or set ACEs on an entire directory tree according to the
inheritance flags. Refer to the INHERITANCE section for details.
--numeric
This option displays all ACL information in numeric format. The default is to convert
SIDs to names and ACE types and masks to a readable string format.
-m|--max-protocol PROTOCOL_NAME
This allows the user to select the highest SMB protocol level that smbcacls will use
to connect to the server. By default this is set to NT1, which is the highest
available SMB1 protocol. To connect using SMB2 or SMB3 protocol, use the strings SMB2
or SMB3 respectively. Note that to connect to a Windows 2012 server with encrypted
transport selecting a max-protocol of SMB3 is required.
-t|--test-args
Don't actually do anything, only validate the correctness of the arguments.
--query-security-info FLAGS
The security-info flags for queries.
--set-security-info FLAGS
The security-info flags for queries.
--sddl
Output and input acls in sddl format.
--domain-sid SID
SID used for sddl processing.
-x|--maximum-access
When displaying an ACL additionally query the server for effective maximum
permissions. Note that this is only supported with SMB protocol version 2 or higher.
-?|--help
Print a summary of command line options.
--usage
Display brief usage message.
-d|--debuglevel=DEBUGLEVEL
level is an integer from 0 to 10. The default value if this parameter is not specified
is 1 for client applications.
The higher this value, the more detail will be logged to the log files about the
activities of the server. At level 0, only critical errors and serious warnings will
be logged. Level 1 is a reasonable level for day-to-day running - it generates a small
amount of information about operations carried out.
Levels above 1 will generate considerable amounts of log data, and should only be used
when investigating a problem. Levels above 3 are designed for use only by developers
and generate HUGE amounts of log data, most of which is extremely cryptic.
Note that specifying this parameter here will override the log level parameter in the
smb.conf file.
--debug-stdout
This will redirect debug output to STDOUT. By default all clients are logging to
STDERR.
--configfile=<configuration file>
The file specified contains the configuration details required by the client. The
information in this file can be general for client and server or only provide client
specific like options such as client smb encrypt. See smb.conf for more information.
The default configuration file name is determined at compile time.
--option=<name>=<value>
Set the smb.conf(5) option "<name>" to value "<value>" from the command line. This
overrides compiled-in defaults and options read from the configuration file. If a name
or a value includes a space, wrap whole --option=name=value into quotes.
-l|--log-basename=logdirectory
Base directory name for log/debug files. The extension ".progname" will be appended
(e.g. log.smbclient, log.smbd, etc...). The log file is never removed by the client.
--leak-report
Enable talloc leak reporting on exit.
--leak-report-full
Enable full talloc leak reporting on exit.
-V|--version
Prints the program version number.
-R|--name-resolve=NAME-RESOLVE-ORDER
This option is used to determine what naming services and in what order to resolve
host names to IP addresses. The option takes a space-separated string of different
name resolution options. The best ist to wrap the whole
--name-resolve=NAME-RESOLVE-ORDER into quotes.
The options are: "lmhosts", "host", "wins" and "bcast". They cause names to be
resolved as follows:
• lmhosts: Lookup an IP address in the Samba lmhosts file. If the line in
lmhosts has no name type attached to the NetBIOS name (see the lmhosts(5)
for details) then any name type matches for lookup.
• host: Do a standard host name to IP address resolution, using the system
/etc/hosts, NIS, or DNS lookups. This method of name resolution is
operating system dependent, for instance on IRIX or Solaris this may be
controlled by the /etc/nsswitch.conf file). Note that this method is only
used if the NetBIOS name type being queried is the 0x20 (server) name type,
otherwise it is ignored.
• wins: Query a name with the IP address listed in the wins server parameter.
If no WINS server has been specified this method will be ignored.
• bcast: Do a broadcast on each of the known local interfaces listed in the
interfaces parameter. This is the least reliable of the name resolution
methods as it depends on the target host being on a locally connected
subnet.
If this parameter is not set then the name resolve order defined in the smb.conf file
parameter (name resolve order) will be used.
The default order is lmhosts, host, wins, bcast. Without this parameter or any entry
in the name resolve order parameter of the smb.conf file, the name resolution methods
will be attempted in this order.
-O|--socket-options=SOCKETOPTIONS
TCP socket options to set on the client socket. See the socket options parameter in
the smb.conf manual page for the list of valid options.
-m|--max-protocol=MAXPROTOCOL
The value of the parameter (a string) is the highest protocol level that will be
supported by the client.
Note that specifying this parameter here will override the client max protocol
parameter in the smb.conf file.
-n|--netbiosname=NETBIOSNAME
This option allows you to override the NetBIOS name that Samba uses for itself. This
is identical to setting the netbios name parameter in the smb.conf file. However, a
command line setting will take precedence over settings in smb.conf.
--netbios-scope=SCOPE
This specifies a NetBIOS scope that nmblookup will use to communicate with when
generating NetBIOS names. For details on the use of NetBIOS scopes, see rfc1001.txt
and rfc1002.txt. NetBIOS scopes are very rarely used, only set this parameter if you
are the system administrator in charge of all the NetBIOS systems you communicate
with.
-W|--workgroup=WORKGROUP
Set the SMB domain of the username. This overrides the default domain which is the
domain defined in smb.conf. If the domain specified is the same as the servers NetBIOS
name, it causes the client to log on using the servers local SAM (as opposed to the
Domain SAM).
Note that specifying this parameter here will override the workgroup parameter in the
smb.conf file.
-r|--realm=REALM
Set the realm for the domain.
Note that specifying this parameter here will override the realm parameter in the
smb.conf file.
-U|--user=[DOMAIN\]USERNAME[%PASSWORD]
Sets the SMB username or username and password.
If %PASSWORD is not specified, the user will be prompted. The client will first check
the USER environment variable (which is also permitted to also contain the password
seperated by a %), then the LOGNAME variable (which is not permitted to contain a
password) and if either exists, the value is used. If these environmental variables
are not found, the username found in a Kerberos Credentials cache may be used.
A third option is to use a credentials file which contains the plaintext of the
username and password. This option is mainly provided for scripts where the admin does
not wish to pass the credentials on the command line or via environment variables. If
this method is used, make certain that the permissions on the file restrict access
from unwanted users. See the -A for more details.
Be cautious about including passwords in scripts or passing user-supplied values onto
the command line. For security it is better to let the Samba client tool ask for the
password if needed, or obtain the password once with kinit.
While Samba will attempt to scrub the password from the process title (as seen in ps),
this is after startup and so is subject to a race.
-N|--no-pass
If specified, this parameter suppresses the normal password prompt from the client to
the user. This is useful when accessing a service that does not require a password.
Unless a password is specified on the command line or this parameter is specified, the
client will request a password.
If a password is specified on the command line and this option is also defined the
password on the command line will be silently ignored and no password will be used.
--password
Specify the password on the commandline.
Be cautious about including passwords in scripts or passing user-supplied values onto
the command line. For security it is better to let the Samba client tool ask for the
password if needed, or obtain the password once with kinit.
If --password is not specified, the tool will check the PASSWD environment variable,
followed by PASSWD_FD which is expected to contain an open file descriptor (FD)
number.
Finally it will check PASSWD_FILE (containing a file path to be opened). The file
should only contain the password. Make certain that the permissions on the file
restrict access from unwanted users!
While Samba will attempt to scrub the password from the process title (as seen in ps),
this is after startup and so is subject to a race.
--pw-nt-hash
The supplied password is the NT hash.
-A|--authentication-file=filename
This option allows you to specify a file from which to read the username and password
used in the connection. The format of the file is:
username = <value>
password = <value>
domain = <value>
Make certain that the permissions on the file restrict access from unwanted users!
-P|--machine-pass
Use stored machine account password.
--simple-bind-dn=DN
DN to use for a simple bind.
--use-kerberos=desired|required|off
This parameter determines whether Samba client tools will try to authenticate using
Kerberos. For Kerberos authentication you need to use dns names instead of IP
addresses when connnecting to a service.
Note that specifying this parameter here will override the client use kerberos
parameter in the smb.conf file.
--use-krb5-ccache=CCACHE
Specifies the credential cache location for Kerberos authentication.
This will set --use-kerberos=required too.
--use-winbind-ccache
Try to use the credential cache by winbind.
--client-protection=sign|encrypt|off
Sets the connection protection the client tool should use.
Note that specifying this parameter here will override the client protection parameter
in the smb.conf file.
In case you need more fine grained control you can use:
--option=clientsmbencrypt=OPTION, --option=clientipcsigning=OPTION,
--option=clientsigning=OPTION.
ACL FORMAT
The format of an ACL is one or more entries separated by either commas or newlines. An ACL
entry is one of the following:
REVISION:<revision number>
OWNER:<sid or name>
GROUP:<sid or name>
ACL:<sid or name>:<type>/<flags>/<mask>
Control bits related to automatic inheritance
• OD - "Owner Defaulted" - Indicates that the SID of the owner of the security
descriptor was provided by a default mechanism.
• GD - "Group Defaulted" - Indicates that the SID of the security descriptor
group was provided by a default mechanism.
• DP - "DACL Present" - Indicates a security descriptor that has a discretionary
access control list (DACL).
• DD - "DACL Defaulted" - Indicates a security descriptor with a default DACL.
• SP - "SACL Present" - Indicates a security descriptor that has a system access
control list (SACL).
• SD - "SACL Defaulted" - A default mechanism, rather than the original provider
of the security descriptor, provided the SACL.
• DT - "DACL Trusted"
• SS - "Server Security"
• DR - "DACL Inheritance Required" - Indicates a required security descriptor in
which the DACL is set up to support automatic propagation of inheritable access
control entries (ACEs) to existing child objects.
• SR - "SACL Inheritance Required" - Indicates a required security descriptor in
which the SACL is set up to support automatic propagation of inheritable ACEs
to existing child objects.
• DI - "DACL Auto Inherited" - Indicates a security descriptor in which the DACL
is set up to support automatic propagation of inheritable access control
entries (ACEs) to existing child objects.
• SI - "SACL Auto Inherited" - Indicates a security descriptor in which the SACL
is set up to support automatic propagation of inheritable ACEs to existing
child objects.
• PD - "DACL Protected" - Prevents the DACL of the security descriptor from being
modified by inheritable ACEs.
• PS - "SACL Protected" - Prevents the SACL of the security descriptor from being
modified by inheritable ACEs.
• RM - "RM Control Valid" - Indicates that the resource manager control is valid.
• SR - "Self Relative" - Indicates a self-relative security descriptor.
The revision of the ACL specifies the internal Windows NT ACL revision for the security
descriptor. If not specified it defaults to 1. Using values other than 1 may cause strange
behaviour.
The owner and group specify the owner and group sids for the object. If a SID in the
format S-1-x-y-z is specified this is used, otherwise the name specified is resolved using
the server on which the file or directory resides.
ACEs are specified with an "ACL:" prefix, and define permissions granted to an SID. The
SID again can be specified in S-1-x-y-z format or as a name in which case it is resolved
against the server on which the file or directory resides. The type, flags and mask values
determine the type of access granted to the SID.
The type can be either ALLOWED or DENIED to allow/deny access to the SID.
The flags field defines how the ACE should be considered when performing inheritance.
smbcacls uses these flags when run with --propagate-inheritance.
Flags can be specified as decimal or hexadecimal values, or with the respective (XX)
aliases, separated by a vertical bar "|".
• (OI) Object Inherit 0x1
• (CI) Container Inherit 0x2
• (NP) No Propagate Inherit 0x4
• (IO) Inherit Only 0x8
• (I) ACE was inherited 0x10
The mask is a value which expresses the access right granted to the SID. It can be given
as a decimal or hexadecimal value, or by using one of the following text strings which map
to the NT file permissions of the same name.
• R - Allow read access
• W - Allow write access
• X - Execute permission on the object
• D - Delete the object
• P - Change permissions
• O - Take ownership
The following combined permissions can be specified:
• READ - Equivalent to 'RX' permissions
• CHANGE - Equivalent to 'RXWD' permissions
• FULL - Equivalent to 'RWXDPO' permissions
INHERITANCE
Per-ACE inheritance flags can be set in the ACE flags field. By default, inheritable ACEs
e.g. those marked for object inheritance (OI) or container inheritance (CI), are not
propagated to sub-files or folders. However, with the --propagate-inheritance argument
specified, such ACEs are automatically propagated according to some inheritance rules.
• Inheritable (OI)(OI) ACE flags can only be applied to folders.
• Any inheritable ACEs applied to sub-files or folders are marked with the
inherited (I) flag. Inheritable ACE(s) are applied to folders unless the no
propagation (NP) flag is set.
• When an ACE with the (OI) flag alone set is progagated to a child folder the
inheritance only flag (IO) is also applied. This indicates the permissions
associated with the ACE don't apply to the folder itself (only to it's child
files). When applying the ACE to a child file the ACE is inherited as normal.
• When an ace with the (CI) flag alone set is propagated to a child file there is
no effect, when propagated to a child folder it is inherited as normal.
• When an ACE that has both (OI) & (CI) flags set the ACE is inherited as normal
by both folders and files.
(OI)(READ) added to parent folder
+-parent/ (OI)(READ)
| +-file.1 (I)(READ)
| +-nested/ (OI)(IO)(I)(READ)
| +-file.2 (I)(READ)
(CI)(READ) added to parent folder
+-parent/ (CI)(READ)
| +-file.1
| +-nested/ (CI)(I)(READ)
| +-file.2
(OI)(CI)(READ) added to parent folder
+-parent/ (OI)(CI)(READ)
| +-file.1 (I)(READ)
| +-nested/ (OI)(CI)(I)(READ)
| +-file.2 (I)(READ)
(OI)(NP)(READ) added to parent folder
+-oi_dir/ (OI)(NP)(READ)
| +-file.1 (I)(READ)
| +-nested/
| +-file.2
(CI)(NP)(READ) added to parent folder
+-oi_dir/ (CI)(NP)(READ)
| +-file.1
| +-nested/ (I)(READ)
| +-file.2
(OI)(CI)(NP)(READ) added to parent folder
+-parent/ (CI)(OI)(NP)(READ)
| +-file.1 (I)(READ)
| +-nested/ (I)(READ)
| +-file.2
Files and folders with protected ACLs do not allow inheritable permissions (set with -I).
Such objects will not receive ACEs flagged for inheritance with (CI) or (OI).
EXIT STATUS
The smbcacls program sets the exit status depending on the success or otherwise of the
operations performed. The exit status may be one of the following values.
If the operation succeeded, smbcacls returns and exit status of 0. If smbcacls couldn't
connect to the specified server, or there was an error getting or setting the ACLs, an
exit status of 1 is returned. If there was an error parsing any command line arguments, an
exit status of 2 is returned.
VERSION
This man page is part of version 4.15.13-Ubuntu of the Samba suite.
AUTHOR
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.
smbcacls was written by Andrew Tridgell and Tim Potter.
The conversion to DocBook for Samba 2.2 was done by Gerald Carter. The conversion to
DocBook XML 4.2 for Samba 3.0 was done by Alexander Bokovoy.