smbcacls
1
Samba
User Commands
&doc.version;
smbcacls
Set or get ACLs on an NT file or directory names
smbcacls
//server/share
/filename
-D|--delete acl
-M|--modify acl
-a|--add acl
-S|--set acl
-C|--chown name
-G|--chgrp name
-I allow|remove|copy
--numeric
-t
-U username
-d
-e
-m|--max-protocol LEVEL
--query-security-info FLAGS
--set-security-info FLAGS
--sddl
--domain-sid SID
-x|--maximum-access
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 acls. Copy will copy all the inherited acls.
--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.
&stdarg.server.debug;
&popt.common.samba;
&popt.common.credentials;
&popt.common.connection;
&popt.autohelp;
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>
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 values are generally zero for file ACEs and
either 9 or 2 for directory ACEs. Some common flags are:
#define SEC_ACE_FLAG_OBJECT_INHERIT 0x1
#define SEC_ACE_FLAG_CONTAINER_INHERIT 0x2
#define SEC_ACE_FLAG_NO_PROPAGATE_INHERIT 0x4
#define SEC_ACE_FLAG_INHERIT_ONLY 0x8
At present, flags can only be specified as decimal or
hexadecimal values.
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
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 &doc.version; 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.