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SMBCACLS(1)
NAME
smbcacls - Set or get ACLs on an NT file or directory names
SYNOPSIS
smbcacls {//server/share} {filename} [-D acls] [-M acls] [-a acls]
[-S acls] [-C name] [-G name] [--numeric] [-t] [-U username] [-h]
[-d]
DESCRIPTION
This tool is part of the samba(7) suite.
The smbcacls program manipulates NT Access Control Lists (ACLs) on SMB file
shares.
OPTIONS
The following options are available to the smbcacls program. The format of
ACLs is described in the section ACL FORMAT
-a acls
Add the ACLs specified to the ACL list. Existing access control en-
tries are unchanged.
-M acls
Modify the mask value (permissions) for the ACLs specified on the com-
mand line. An error will be printed for each ACL specified that was
not already present in the ACL list
-D acls
Delete any ACLs specified on the command line. An error will be print-
ed for each ACL specified that was not already present in the ACL
list.
-S acls
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 speci-
fied must contain at least a revision, type, owner and group for the
call to succeed.
-U username
Specifies a username used to connect to the specified service. The
username may be of the form "username" in which case the user is
prompted to enter in a password and the workgroup specified in the
smb.conf(5) file is used, or "username%password" or
"DOMAIN\username%password" and the password and workgroup names are
used as provided.
-C name
The owner of a file or directory can be changed to the name given us-
ing 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 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.
--numeric
This option displays all ACL information in numeric format. The de-
fault is to convert SIDs to names and ACE types and masks to a read-
able string format.
-t Don't actually do anything, only validate the correctness of the argu-
ments.
-h|--help
Print a summary of command line options.
-V Prints the program version number.
-s <configuration file>
The file specified contains the configuration details required by the
server. The information in this file includes server-specific informa-
tion such as what printcap file to use, as well as descriptions of all
the services that the server is to provide. See smb.conf for more in-
formation. The default configuration file name is determined at com-
pile time.
-d|--debuglevel=level
level is an integer from 0 to 10. The default value if this parameter
is not specified is zero.
The higher this value, the more detail will be logged to the log files
about the activities of the server. At level 0, only critical errors
and serious warnings will be logged. Level 1 is a reasonable level for
day-to-day running - it generates a small amount of information about
operations carried out.
Levels above 1 will generate considerable amounts of log data, and
should only be used when investigating a problem. Levels above 3 are
designed for use only by developers and generate HUGE amounts of log
data, most of which is extremely cryptic.
Note that specifying this parameter here will override the parameter
in the smb.conf file.
-l|--logfile=logdirectory
Base directory name for log/debug files. The extension ".progname"
will be appended (e.g. log.smbclient, log.smbd, etc...). The log file
is never removed by the client.
ACL 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:<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 re-
sides.
ACLs specify permissions granted to the SID. This SID again can be speci-
fied 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 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:
· #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 fol-
lowing 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 oth-
erwise of the operations performed. The exit status may be one of the fol-
lowing 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 re-
turned.
VERSION
This man page is correct for version 3.0 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 pro-
ject 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.
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Index for
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