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]
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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 -d|--debuglevel=level
98 level is an integer from 0 to 10. The default value if this
99 parameter is not specified is 0.
100 The higher this value, the more detail will be logged to the log
102 files about the activities of the server. At level 0, only critical
103 errors and serious warnings will be logged. Level 1 is a reasonable
104 level for day-to-day running - it generates a small amount of
105 information about operations carried out.
106 Levels above 1 will generate considerable amounts of log data, and
108 should only be used when investigating a problem. Levels above 3
109 are designed for use only by developers and generate HUGE amounts
110 of log data, most of which is extremely cryptic.
111 Note that specifying this parameter here will override the log
113 level parameter in the smb.conf file.
114 -V|--version
116 Prints the program version number.
117 -s|--configfile=<configuration file>
119 The file specified contains the configuration details required by
120 the server. The information in this file includes server-specific
121 information such as what printcap file to use, as well as
122 descriptions of all the services that the server is to provide. See
123 smb.conf for more information. The default configuration file name
124 is determined at compile time.
125 -l|--log-basename=logdirectory
127 Base directory name for log/debug files. The extension ".progname"
128 will be appended (e.g. log.smbclient, log.smbd, etc...). The log
129 file is never removed by the client.
130 --option=<name>=<value>
132 Set the smb.conf(5) option "<name>" to value "<value>" from the
133 command line. This overrides compiled-in defaults and options read
134 from the configuration file.
135 -N|--no-pass
137 If specified, this parameter suppresses the normal password prompt
138 from the client to the user. This is useful when accessing a
139 service that does not require a password.
140 Unless a password is specified on the command line or this
142 parameter is specified, the client will request a password.
143 If a password is specified on the command line and this option is
145 also defined the password on the command line will be silently
146 ingnored and no password will be used.
147 -k|--kerberos
149 Try to authenticate with kerberos. Only useful in an Active
150 Directory environment.
151 -C|--use-ccache
153 Try to use the credentials cached by winbind.
154 -A|--authentication-file=filename
156 This option allows you to specify a file from which to read the
157 username and password used in the connection. The format of the
158 file is
159 username = <value>
161 password = <value>
162 domain = <value>
163 Make certain that the permissions on the file restrict access from
165 unwanted users.
166 -U|--user=username[%password]
168 Sets the SMB username or username and password.
169 If %password is not specified, the user will be prompted. The
171 client will first check the USER environment variable, then the
172 LOGNAME variable and if either exists, the string is uppercased. If
173 these environmental variables are not found, the username GUEST is
174 used.
175 A third option is to use a credentials file which contains the
177 plaintext of the username and password. This option is mainly
178 provided for scripts where the admin does not wish to pass the
179 credentials on the command line or via environment variables. If
180 this method is used, make certain that the permissions on the file
181 restrict access from unwanted users. See the -A for more details.
182 Be cautious about including passwords in scripts. Also, on many
184 systems the command line of a running process may be seen via the
185 ps command. To be safe always allow rpcclient to prompt for a
186 password and type it in directly.
187 -S|--signing on|off|required
189 Set the client signing state.
190 -P|--machine-pass
192 Use stored machine account password.
193 -e|--encrypt
195 This command line parameter requires the remote server support the
196 UNIX extensions or that the SMB3 protocol has been selected.
197 Requests that the connection be encrypted. Negotiates SMB
198 encryption using either SMB3 or POSIX extensions via GSSAPI. Uses
199 the given credentials for the encryption negotiation (either
200 kerberos or NTLMv1/v2 if given domain/username/password triple.
201 Fails the connection if encryption cannot be negotiated.
202 --pw-nt-hash
204 The supplied password is the NT hash.
205 -n|--netbiosname <primary NetBIOS name>
207 This option allows you to override the NetBIOS name that Samba uses
208 for itself. This is identical to setting the netbios name parameter
209 in the smb.conf file. However, a command line setting will take
210 precedence over settings in smb.conf.
211 -i|--scope <scope>
213 This specifies a NetBIOS scope that nmblookup will use to
214 communicate with when generating NetBIOS names. For details on the
215 use of NetBIOS scopes, see rfc1001.txt and rfc1002.txt. NetBIOS
216 scopes are very rarely used, only set this parameter if you are the
217 system administrator in charge of all the NetBIOS systems you
218 communicate with.
219 -W|--workgroup=domain
221 Set the SMB domain of the username. This overrides the default
222 domain which is the domain defined in smb.conf. If the domain
223 specified is the same as the servers NetBIOS name, it causes the
224 client to log on using the servers local SAM (as opposed to the
225 Domain SAM).
226 -O|--socket-options socket options
228 TCP socket options to set on the client socket. See the socket
229 options parameter in the smb.conf manual page for the list of valid
230 options.
231 -?|--help
233 Print a summary of command line options.
234 --usage
236 Display brief usage message.
237
239 The format of an ACL is one or more entries separated by either commas
240 or newlines. An ACL entry is one of the following:
241 REVISION:<revision number>
243 OWNER:<sid or name>
244 GROUP:<sid or name>
245 ACL:<sid or name>:<type>/<flags>/<mask>
246 The revision of the ACL specifies the internal Windows NT ACL revision
248 for the security descriptor. If not specified it defaults to 1. Using
249 values other than 1 may cause strange behaviour.
250 The owner and group specify the owner and group sids for the object. If
252 a SID in the format S-1-x-y-z is specified this is used, otherwise the
253 name specified is resolved using the server on which the file or
254 directory resides.
255 ACEs are specified with an "ACL:" prefix, and define permissions
257 granted to an SID. The SID again can be specified in S-1-x-y-z format
258 or as a name in which case it is resolved against the server on which
259 the file or directory resides. The type, flags and mask values
260 determine the type of access granted to the SID.
261 The type can be either ALLOWED or DENIED to allow/deny access to the
263 SID. The flags values are generally zero for file ACEs and either 9 or
264 2 for directory ACEs. Some common flags are:
265 · #define SEC_ACE_FLAG_OBJECT_INHERIT 0x1
267 · #define SEC_ACE_FLAG_CONTAINER_INHERIT 0x2
269 · #define SEC_ACE_FLAG_NO_PROPAGATE_INHERIT 0x4
271 · #define SEC_ACE_FLAG_INHERIT_ONLY 0x8
273 At present, flags can only be specified as decimal or hexadecimal
276 values.
277 The mask is a value which expresses the access right granted to the
279 SID. It can be given as a decimal or hexadecimal value, or by using one
280 of the following text strings which map to the NT file permissions of
281 the same name.
282 · R - Allow read access
284 · W - Allow write access
286 · X - Execute permission on the object
288 · D - Delete the object
290 · P - Change permissions
292 · O - Take ownership
294 The following combined permissions can be specified:
297 · READ - Equivalent to 'RX' permissions
299 · CHANGE - Equivalent to 'RXWD' permissions
301 · FULL - Equivalent to 'RWXDPO' permissions
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305 The smbcacls program sets the exit status depending on the success or
306 otherwise of the operations performed. The exit status may be one of
307 the following values.
308 If the operation succeeded, smbcacls returns and exit status of 0. If
310 smbcacls couldn't connect to the specified server, or there was an
311 error getting or setting the ACLs, an exit status of 1 is returned. If
312 there was an error parsing any command line arguments, an exit status
313 of 2 is returned.
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316 This man page is part of version 4.9.1 of the Samba suite.
317
319 The original Samba software and related utilities were created by
320 Andrew Tridgell. Samba is now developed by the Samba Team as an Open
321 Source project similar to the way the Linux kernel is developed.
322 smbcacls was written by Andrew Tridgell and Tim Potter.
324 The conversion to DocBook for Samba 2.2 was done by Gerald Carter. The
326 conversion to DocBook XML 4.2 for Samba 3.0 was done by Alexander
327 Bokovoy.
328Samba 4.9.1 05/11/2019 SMBCACLS(1)