This tool is part of the Sambasuite.
The following options are available to the smbcacls program. The format of ACLs is described in the section ACL FORMAT
Add the ACLs specified to the ACL list. Existing access control entries are unchanged.
Modify the mask value (permissions) for the ACLs specified on the command line. An error will be printed for each ACL specified that was not already present in the ACL list
Delete any ACLs specified on the command line. An error will be printed for each ACL specified that was not already present in the ACL list.
This command sets the ACLs on the file with only the ones specified on the command line. All other ACLs are erased. Note that the ACL specified must contain at least a revision, type, owner and group for the call to succeed.
Specifies a username used to connect to the specified service. The username may be of the form smb.conf file is used, or
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.
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.
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.
The format of an ACL is one or more ACL entries separated by either commas or newlines. An ACL entry is one of the following:
REVISION: 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 CWS-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.
ACLs specify permissions granted to the SID. This SID again can be specified in CWS-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 0 or 1 corresponding to ALLOWED or DENIED access to the SID. The flags values are generally zero for file ACLs and either 9 or 2 for directory ACLs. Some common flags are:
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
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.
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.