samba-mirror/docs-xml/manpages/smbcacls.1.xml

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<!DOCTYPE refentry PUBLIC "-//Samba-Team//DTD DocBook V4.2-Based Variant V1.0//EN" "http://www.samba.org/samba/DTD/samba-doc">
<refentry id="smbcacls.1">

<refmeta>
	<refentrytitle>smbcacls</refentrytitle>
	<manvolnum>1</manvolnum>
	<refmiscinfo class="source">Samba</refmiscinfo>
	<refmiscinfo class="manual">User Commands</refmiscinfo>
	<refmiscinfo class="version">&doc.version;</refmiscinfo>
</refmeta>


<refnamediv>
	<refname>smbcacls</refname>
	<refpurpose>Set or get ACLs on an NT file or directory names</refpurpose>
</refnamediv>

<refsynopsisdiv>
	<cmdsynopsis>
		<command>smbcacls</command>
		<arg choice="req">//server/share</arg>
		<arg choice="req">/filename</arg>
		<arg choice="opt">-D|--delete acl</arg>
		<arg choice="opt">-M|--modify acl</arg>
		<arg choice="opt">-a|--add acl</arg>
		<arg choice="opt">-S|--set acl</arg>
		<arg choice="opt">-C|--chown name</arg>
		<arg choice="opt">-G|--chgrp name</arg>
		<arg choice="opt">-I allow|remove|copy</arg>
		<arg choice="opt">--propagate-inheritance</arg>
		<arg choice="opt">--numeric</arg>
		<arg choice="opt">-t</arg>
		<arg choice="opt">-U username</arg>
		<arg choice="opt">-d</arg>
		<arg choice="opt">-e</arg>
		<arg choice="opt">-m|--max-protocol LEVEL</arg>
		<arg choice="opt">--query-security-info FLAGS</arg>
		<arg choice="opt">--set-security-info FLAGS</arg>
		<arg choice="opt">--sddl</arg>
		<arg choice="opt">--domain-sid SID</arg>
		<arg choice="opt">-x|--maximum-access</arg>
	</cmdsynopsis>
</refsynopsisdiv>

<refsect1>
	<title>DESCRIPTION</title>

	<para>This tool is part of the <citerefentry><refentrytitle>samba</refentrytitle>
	<manvolnum>7</manvolnum></citerefentry> suite.</para>

	<para>The <command>smbcacls</command> 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.</para>
</refsect1>


<refsect1>
	<title>OPTIONS</title>

	<para>The following options are available to the <command>smbcacls</command> program.  
	The format of ACLs is described in the section ACL FORMAT </para>


	<variablelist>
		<varlistentry>
		<term>-a|--add acl</term>
		<listitem><para>Add the entries specified to the ACL.  Existing
		access control entries are unchanged.</para></listitem>
		</varlistentry>
		
		
		
		<varlistentry>
		<term>-M|--modify acl</term>
		<listitem><para>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.
		</para></listitem>
		</varlistentry>
		
		
		
		<varlistentry>
		<term>-D|--delete acl</term>
		<listitem><para>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. </para></listitem>
		</varlistentry>
		
		
		
		<varlistentry>
		<term>-S|--set acl</term>
		<listitem><para>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. </para></listitem>
		</varlistentry>
		
		
		
		<varlistentry>
		<term>-C|--chown name</term>
		<listitem><para>The owner of a file or directory can be changed 
		to the name given using the <parameter>-C</parameter> 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. </para>
		
		<para>This command is a shortcut for -M OWNER:name. 
		</para></listitem>
		</varlistentry>
		
		
		
		<varlistentry>
		<term>-G|--chgrp name</term>
		<listitem><para>The group owner of a file or directory can 
		be changed to the name given using the <parameter>-G</parameter> 
		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.
		</para>
		
		<para>This command is a shortcut for -M GROUP:name.</para></listitem>
		</varlistentry>
		
		
		
		<varlistentry>
		<term>-I|--inherit allow|remove|copy</term>
		<listitem><para>Set or unset the windows "Allow inheritable
		permissions" check box using the <parameter>-I</parameter>
		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.
		</para></listitem>

		</varlistentry>

		<varlistentry>
		<term>--propagate-inheritance</term>
		<listitem><para>Add, modify, delete or set ACEs on an entire
		directory tree according to the inheritance flags. Refer to the
		INHERITANCE section for details.
		</para></listitem>
		</varlistentry>

		<varlistentry>
		<term>--numeric</term>
		<listitem><para>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.  </para></listitem>
		</varlistentry>
		
		<varlistentry>
		<term>-m|--max-protocol PROTOCOL_NAME</term>
		<listitem><para>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.
		</para></listitem>
		</varlistentry>

		<varlistentry>
		<term>-t|--test-args</term>
		<listitem><para>
		Don't actually do anything, only validate the correctness of 
		the arguments.
		</para></listitem>
		</varlistentry>

		<varlistentry>
		<term>--query-security-info FLAGS</term>
		<listitem><para>The security-info flags for queries.
		</para></listitem>
		</varlistentry>

		<varlistentry>
		<term>--set-security-info FLAGS</term>
		<listitem><para>The security-info flags for queries.
		</para></listitem>
		</varlistentry>

		<varlistentry>
		<term>--sddl</term>
		<listitem><para>Output and input acls in sddl format.
		</para></listitem>
		</varlistentry>

		<varlistentry>
		<term>--domain-sid SID</term>
		<listitem><para>SID used for sddl processing.
		</para></listitem>
		</varlistentry>

		<varlistentry>
		<term>-x|--maximum-access</term>
		<listitem><para>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.
		</para></listitem>
		</varlistentry>

		&stdarg.server.debug;
		&popt.common.samba;
		&popt.common.credentials;
		&popt.common.connection;
		&popt.autohelp;
	</variablelist>
</refsect1>


<refsect1>
	<title>ACL FORMAT</title>

	<para>The format of an ACL is one or more entries separated by
	either commas or newlines.  An ACL entry is one of the following: </para>

<para><programlisting> 
REVISION:&lt;revision number&gt;
OWNER:&lt;sid or name&gt;
GROUP:&lt;sid or name&gt;
ACL:&lt;sid or name&gt;:&lt;type&gt;/&lt;flags&gt;/&lt;mask&gt;
</programlisting></para>
  
	<para>Control bits related to automatic inheritance</para>


	<itemizedlist>
		<listitem><para><emphasis>OD</emphasis> - "Owner Defaulted" - Indicates that the SID of the owner of the security descriptor was provided by a default mechanism.</para></listitem>
		<listitem><para><emphasis>GD</emphasis> - "Group Defaulted" - Indicates that the SID of the security descriptor group was provided by a default mechanism.</para></listitem>
		<listitem><para><emphasis>DP</emphasis> - "DACL Present" - Indicates a security descriptor that has a discretionary access control list (DACL).</para></listitem>
		<listitem><para><emphasis>DD</emphasis> - "DACL Defaulted" - Indicates a security descriptor with a default DACL.</para></listitem>
		<listitem><para><emphasis>SP</emphasis> - "SACL Present" - Indicates a security descriptor that has a system access control list (SACL).</para></listitem>
		<listitem><para><emphasis>SD</emphasis> - "SACL Defaulted" - A default mechanism, rather than the original provider of the security descriptor, provided the SACL.</para></listitem>
		<listitem><para><emphasis>DT</emphasis> - "DACL Trusted"</para></listitem>
		<listitem><para><emphasis>SS</emphasis> - "Server Security"</para></listitem>
		<listitem><para><emphasis>DR</emphasis> - "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.</para></listitem>
		<listitem><para><emphasis>SR</emphasis> - "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.</para></listitem>
		<listitem><para><emphasis>DI</emphasis> - "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.</para></listitem>
		<listitem><para><emphasis>SI</emphasis> - "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.</para></listitem>
		<listitem><para><emphasis>PD</emphasis> - "DACL Protected" - Prevents the DACL of the security descriptor from being modified by inheritable ACEs.</para></listitem>
		<listitem><para><emphasis>PS</emphasis> - "SACL Protected" - Prevents the SACL of the security descriptor from being modified by inheritable ACEs.</para></listitem>
		<listitem><para><emphasis>RM</emphasis> - "RM Control Valid" - Indicates that the resource manager control is valid.</para></listitem>
		<listitem><para><emphasis>SR</emphasis> - "Self Relative" - Indicates a self-relative security descriptor.</para></listitem>
	</itemizedlist>

	<para>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. </para>

	<para>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. </para>

	<para>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. </para>

	<para>The type can be either ALLOWED or	DENIED to allow/deny access 
	to the SID.</para>

	<para>The flags field defines how the ACE should be considered when
	performing inheritance. <command>smbcacls</command> uses these flags
	when run with <parameter>--propagate-inheritance</parameter>.</para>

	<para>Flags can be specified as decimal or hexadecimal values, or with
	the respective (XX) aliases, separated by a vertical bar "|".</para>

	<itemizedlist> 
		<listitem><para><emphasis>(OI)</emphasis> Object Inherit	0x1</para></listitem>
		<listitem><para><emphasis>(CI)</emphasis> Container Inherit  	0x2</para></listitem>
		<listitem><para><emphasis>(NP)</emphasis> No Propagate Inherit	0x4</para></listitem>
		<listitem><para><emphasis>(IO)</emphasis> Inherit Only       	0x8</para></listitem>
		<listitem><para><emphasis>(I)</emphasis> ACE was inherited     0x10</para></listitem>
 	</itemizedlist>
  
 
	<para>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. </para>

	<itemizedlist>
		<listitem><para><emphasis>R</emphasis> - Allow read access </para></listitem>
		<listitem><para><emphasis>W</emphasis> - Allow write access</para></listitem>
		<listitem><para><emphasis>X</emphasis> - Execute permission on the object</para></listitem>
		<listitem><para><emphasis>D</emphasis> - Delete the object</para></listitem>
		<listitem><para><emphasis>P</emphasis> - Change permissions</para></listitem>
		<listitem><para><emphasis>O</emphasis> - Take ownership</para></listitem>
	</itemizedlist>


	<para>The following combined permissions can be specified:</para>


	<itemizedlist>
		<listitem><para><emphasis>READ</emphasis> -  Equivalent to 'RX'
		permissions</para></listitem>
		<listitem><para><emphasis>CHANGE</emphasis> - Equivalent to 'RXWD' permissions
		</para></listitem>
		<listitem><para><emphasis>FULL</emphasis> - Equivalent to 'RWXDPO' 
		permissions</para></listitem>
	</itemizedlist>
	</refsect1>

<refsect1>
	<title>INHERITANCE</title>

	<para>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
	<parameter>--propagate-inheritance</parameter> argument specified, such
	ACEs are automatically propagated according to some inheritance
	rules.
	<itemizedlist>
		<listitem><para>Inheritable (OI)(OI) ACE flags can only be
		applied to folders. </para></listitem>
		<listitem><para>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. </para>
		</listitem>
		<listitem><para>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.</para></listitem>
		<listitem><para>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.
		</para></listitem>
		<listitem><para>When an ACE that has both (OI) &amp; (CI) flags
		set the ACE is inherited as normal by both folders and
		files.</para></listitem>
	</itemizedlist></para>
<para>(OI)(READ) added to parent folder</para>
<para><programlisting>
+-parent/        (OI)(READ)
| +-file.1       (I)(READ)
| +-nested/      (OI)(IO)(I)(READ)
  |   +-file.2   (I)(READ)
</programlisting></para>
<para>(CI)(READ) added to parent folder</para>
<para><programlisting>
+-parent/        (CI)(READ)
| +-file.1
| +-nested/      (CI)(I)(READ)
  |   +-file.2
</programlisting></para>
<para>(OI)(CI)(READ) added to parent folder</para>
<para><programlisting>
+-parent/        (OI)(CI)(READ)
| +-file.1       (I)(READ)
| +-nested/      (OI)(CI)(I)(READ)
  |   +-file.2   (I)(READ)
</programlisting></para>
<para>(OI)(NP)(READ) added to parent folder</para>
<para><programlisting>
+-oi_dir/        (OI)(NP)(READ)
| +-file.1       (I)(READ)
| +-nested/
|   +-file.2
</programlisting></para>
<para>(CI)(NP)(READ) added to parent folder</para>
<para><programlisting>
+-oi_dir/        (CI)(NP)(READ)
| +-file.1
| +-nested/      (I)(READ)
|   +-file.2
</programlisting></para>
<para>(OI)(CI)(NP)(READ) added to parent folder</para>
<para><programlisting>
+-parent/        (CI)(OI)(NP)(READ)
| +-file.1       (I)(READ)
| +-nested/      (I)(READ)
|   +-file.2
</programlisting></para>
	<para>Files and folders with protected ACLs do not allow inheritable
	permissions (set with <parameter>-I</parameter>). Such objects will
	not receive ACEs flagged for inheritance with (CI) or (OI).</para>

</refsect1>

<refsect1>
	<title>EXIT STATUS</title>

	<para>The <command>smbcacls</command> 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. </para>

	<para>If the operation succeeded, smbcacls returns and exit 
	status of 0.  If <command>smbcacls</command> 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. </para>
</refsect1>

<refsect1>
	<title>VERSION</title>

	<para>This man page is part of version &doc.version; of the Samba suite.</para>
</refsect1>

<refsect1>
	<title>AUTHOR</title>
	
	<para>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.</para>
	
	<para><command>smbcacls</command> was written by Andrew Tridgell 
	and Tim Potter.</para>
	
	<para>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.</para>
</refsect1>

</refentry>