1SMBCACLS(1) User Commands SMBCACLS(1)
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6 smbcacls - Set or get ACLs on an NT file or directory names
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9 smbcacls {//server/share} {/filename} [-D|--delete acl]
10 [-M|--modify acl] [-a|--add acl] [-S|--set acl] [-C|--chown name]
11 [-G|--chgrp name] [-I allow|remove|copy] [--numeric] [-t]
12 [-U username] [-d] [-e] [-m|--max-protocol LEVEL]
13 [--query-security-info FLAGS] [--set-security-info FLAGS] [--sddl]
14 [--domain-sid SID] [-x|--maximum-access]
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17 This tool is part of the samba(7) suite.
18 The smbcacls program manipulates NT Access Control Lists (ACLs) on SMB
20 file shares. An ACL is comprised zero or more Access Control Entries
21 (ACEs), which define access restrictions for a specific user or group.
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24 The following options are available to the smbcacls program. The format
25 of ACLs is described in the section ACL FORMAT
26 -a|--add acl
28 Add the entries specified to the ACL. Existing access control
29 entries are unchanged.
30 -M|--modify acl
32 Modify the mask value (permissions) for the ACEs specified on the
33 command line. An error will be printed for each ACE specified that
34 was not already present in the object's ACL.
35 -D|--delete acl
37 Delete any ACEs specified on the command line. An error will be
38 printed for each ACE specified that was not already present in the
39 object's ACL.
40 -S|--set acl
42 This command sets the ACL on the object with only what is specified
43 on the command line. Any existing ACL is erased. Note that the ACL
44 specified must contain at least a revision, type, owner and group
45 for the call to succeed.
46 -C|--chown name
48 The owner of a file or directory can be changed to the name given
49 using the -C option. The name can be a sid in the form S-1-x-y-z or
50 a name resolved against the server specified in the first argument.
51 This command is a shortcut for -M OWNER:name.
53 -G|--chgrp name
55 The group owner of a file or directory can be changed to the name
56 given using the -G option. The name can be a sid in the form
57 S-1-x-y-z or a name resolved against the server specified n the
58 first argument.
59 This command is a shortcut for -M GROUP:name.
61 -I|--inherit allow|remove|copy
63 Set or unset the windows "Allow inheritable permissions" check box
64 using the -I option. To set the check box pass allow. To unset the
65 check box pass either remove or copy. Remove will remove all
66 inherited acls. Copy will copy all the inherited acls.
67 --numeric
69 This option displays all ACL information in numeric format. The
70 default is to convert SIDs to names and ACE types and masks to a
71 readable string format.
72 -m|--max-protocol PROTOCOL_NAME
74 This allows the user to select the highest SMB protocol level that
75 smbcacls will use to connect to the server. By default this is set
76 to NT1, which is the highest available SMB1 protocol. To connect
77 using SMB2 or SMB3 protocol, use the strings SMB2 or SMB3
78 respectively. Note that to connect to a Windows 2012 server with
79 encrypted transport selecting a max-protocol of SMB3 is required.
80 -t|--test-args
82 Don't actually do anything, only validate the correctness of the
83 arguments.
84 --query-security-info FLAGS
86 The security-info flags for queries.
87 --set-security-info FLAGS
89 The security-info flags for queries.
90 --sddl
92 Output and input acls in sddl format.
93 --domain-sid SID
95 SID used for sddl processing.
96 -x|--maximum-access
98 When displaying an ACL additionally query the server for effective
99 maximum permissions. Note that this is only supported with SMB
100 protocol version 2 or higher.
101 -d|--debuglevel=level
103 level is an integer from 0 to 10. The default value if this
104 parameter is not specified is 0.
105 The higher this value, the more detail will be logged to the log
107 files about the activities of the server. At level 0, only critical
108 errors and serious warnings will be logged. Level 1 is a reasonable
109 level for day-to-day running - it generates a small amount of
110 information about operations carried out.
111 Levels above 1 will generate considerable amounts of log data, and
113 should only be used when investigating a problem. Levels above 3
114 are designed for use only by developers and generate HUGE amounts
115 of log data, most of which is extremely cryptic.
116 Note that specifying this parameter here will override the log
118 level parameter in the smb.conf file.
119 -V|--version
121 Prints the program version number.
122 -s|--configfile=<configuration file>
124 The file specified contains the configuration details required by
125 the server. The information in this file includes server-specific
126 information such as what printcap file to use, as well as
127 descriptions of all the services that the server is to provide. See
128 smb.conf for more information. The default configuration file name
129 is determined at compile time.
130 -l|--log-basename=logdirectory
132 Base directory name for log/debug files. The extension ".progname"
133 will be appended (e.g. log.smbclient, log.smbd, etc...). The log
134 file is never removed by the client.
135 --option=<name>=<value>
137 Set the smb.conf(5) option "<name>" to value "<value>" from the
138 command line. This overrides compiled-in defaults and options read
139 from the configuration file.
140 -N|--no-pass
142 If specified, this parameter suppresses the normal password prompt
143 from the client to the user. This is useful when accessing a
144 service that does not require a password.
145 Unless a password is specified on the command line or this
147 parameter is specified, the client will request a password.
148 If a password is specified on the command line and this option is
150 also defined the password on the command line will be silently
151 ignored and no password will be used.
152 -k|--kerberos
154 Try to authenticate with kerberos. Only useful in an Active
155 Directory environment.
156 -C|--use-ccache
158 Try to use the credentials cached by winbind.
159 -A|--authentication-file=filename
161 This option allows you to specify a file from which to read the
162 username and password used in the connection. The format of the
163 file is
164 username = <value>
166 password = <value>
167 domain = <value>
168 Make certain that the permissions on the file restrict access from
170 unwanted users.
171 -U|--user=username[%password]
173 Sets the SMB username or username and password.
174 If %password is not specified, the user will be prompted. The
176 client will first check the USER environment variable, then the
177 LOGNAME variable and if either exists, the string is uppercased. If
178 these environmental variables are not found, the username GUEST is
179 used.
180 A third option is to use a credentials file which contains the
182 plaintext of the username and password. This option is mainly
183 provided for scripts where the admin does not wish to pass the
184 credentials on the command line or via environment variables. If
185 this method is used, make certain that the permissions on the file
186 restrict access from unwanted users. See the -A for more details.
187 Be cautious about including passwords in scripts. Also, on many
189 systems the command line of a running process may be seen via the
190 ps command. To be safe always allow rpcclient to prompt for a
191 password and type it in directly.
192 -S|--signing on|off|required
194 Set the client signing state.
195 -P|--machine-pass
197 Use stored machine account password.
198 -e|--encrypt
200 This command line parameter requires the remote server support the
201 UNIX extensions or that the SMB3 protocol has been selected.
202 Requests that the connection be encrypted. Negotiates SMB
203 encryption using either SMB3 or POSIX extensions via GSSAPI. Uses
204 the given credentials for the encryption negotiation (either
205 kerberos or NTLMv1/v2 if given domain/username/password triple.
206 Fails the connection if encryption cannot be negotiated.
207 --pw-nt-hash
209 The supplied password is the NT hash.
210 -n|--netbiosname <primary NetBIOS name>
212 This option allows you to override the NetBIOS name that Samba uses
213 for itself. This is identical to setting the netbios name parameter
214 in the smb.conf file. However, a command line setting will take
215 precedence over settings in smb.conf.
216 -i|--scope <scope>
218 This specifies a NetBIOS scope that nmblookup will use to
219 communicate with when generating NetBIOS names. For details on the
220 use of NetBIOS scopes, see rfc1001.txt and rfc1002.txt. NetBIOS
221 scopes are very rarely used, only set this parameter if you are the
222 system administrator in charge of all the NetBIOS systems you
223 communicate with.
224 -W|--workgroup=domain
226 Set the SMB domain of the username. This overrides the default
227 domain which is the domain defined in smb.conf. If the domain
228 specified is the same as the servers NetBIOS name, it causes the
229 client to log on using the servers local SAM (as opposed to the
230 Domain SAM).
231 -O|--socket-options socket options
233 TCP socket options to set on the client socket. See the socket
234 options parameter in the smb.conf manual page for the list of valid
235 options.
236 -?|--help
238 Print a summary of command line options.
239 --usage
241 Display brief usage message.
242
244 The format of an ACL is one or more entries separated by either commas
245 or newlines. An ACL entry is one of the following:
246 REVISION:<revision number>
248 OWNER:<sid or name>
249 GROUP:<sid or name>
250 ACL:<sid or name>:<type>/<flags>/<mask>
251 The revision of the ACL specifies the internal Windows NT ACL revision
253 for the security descriptor. If not specified it defaults to 1. Using
254 values other than 1 may cause strange behaviour.
255 The owner and group specify the owner and group sids for the object. If
257 a SID in the format S-1-x-y-z is specified this is used, otherwise the
258 name specified is resolved using the server on which the file or
259 directory resides.
260 ACEs are specified with an "ACL:" prefix, and define permissions
262 granted to an SID. The SID again can be specified in S-1-x-y-z format
263 or as a name in which case it is resolved against the server on which
264 the file or directory resides. The type, flags and mask values
265 determine the type of access granted to the SID.
266 The type can be either ALLOWED or DENIED to allow/deny access to the
268 SID. The flags values are generally zero for file ACEs and either 9 or
269 2 for directory ACEs. Some common flags are:
270 · #define SEC_ACE_FLAG_OBJECT_INHERIT 0x1
272 · #define SEC_ACE_FLAG_CONTAINER_INHERIT 0x2
274 · #define SEC_ACE_FLAG_NO_PROPAGATE_INHERIT 0x4
276 · #define SEC_ACE_FLAG_INHERIT_ONLY 0x8
278 At present, flags can only be specified as decimal or hexadecimal
281 values.
282 The mask is a value which expresses the access right granted to the
284 SID. It can be given as a decimal or hexadecimal value, or by using one
285 of the following text strings which map to the NT file permissions of
286 the same name.
287 · R - Allow read access
289 · W - Allow write access
291 · X - Execute permission on the object
293 · D - Delete the object
295 · P - Change permissions
297 · O - Take ownership
299 The following combined permissions can be specified:
302 · READ - Equivalent to 'RX' permissions
304 · CHANGE - Equivalent to 'RXWD' permissions
306 · FULL - Equivalent to 'RWXDPO' permissions
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310 The smbcacls program sets the exit status depending on the success or
311 otherwise of the operations performed. The exit status may be one of
312 the following values.
313 If the operation succeeded, smbcacls returns and exit status of 0. If
315 smbcacls couldn't connect to the specified server, or there was an
316 error getting or setting the ACLs, an exit status of 1 is returned. If
317 there was an error parsing any command line arguments, an exit status
318 of 2 is returned.
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321 This man page is part of version 4.12.2 of the Samba suite.
322
324 The original Samba software and related utilities were created by
325 Andrew Tridgell. Samba is now developed by the Samba Team as an Open
326 Source project similar to the way the Linux kernel is developed.
327 smbcacls was written by Andrew Tridgell and Tim Potter.
329 The conversion to DocBook for Samba 2.2 was done by Gerald Carter. The
331 conversion to DocBook XML 4.2 for Samba 3.0 was done by Alexander
332 Bokovoy.
333Samba 4.12.2 04/28/2020 SMBCACLS(1)