smbcacls
Set or get ACLs on an NT file or directory names
Synopsis
smbcacls {//server/share}
{/filename} [-D|--delete acls]
[-M|--modify acls]
[-a|--add acls]
[-S|--set acls]
[-C|--chown name]
[-G|--chgrp name]
[-I allow|romove|copy] [--numeric]
[-t] [-U username] [-h]
[-d]
add an example, a script, a trick and tips
examples
source
bin/smbcacls bin/smbcquotas bin/smbget \
bin/net bin/nmblookup bin/mount.cifs bin/umount.cifs || return 1
install -m755 bin/{smbclient,rpcclient,smbspool,smbtree,smbcacls,smbcquotas,smbget,net,nmblookup}
${pkgdir}/usr/bin/
install -m755 bin/{mount.cifs,umount.cifs}
${pkgdir}/sbin/
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|--add
acls
Add the ACLs specified to the
ACL list. Existing access control entries are unchanged.
-M|--modify
acls
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
-D|--delete
acls
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.
-S|--set
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 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.
-t|--test-args
Don´t actually do
anything, only validate the correctness of the
arguments.
-h|--help
Print a summary of command line
options.
-d|--debuglevel=level
level is an integer from
0 to 10. The default value if this parameter is not
specified is 0.
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
smb.conf.5.html#
parameter in the smb.conf
file.
-V|--version
Prints
the program version number.
-s|--configfile
<configuration file>
The file
specified contains the configuration details required by the
server. The information in this file includes
server-specific information 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 information. The
default configuration file name is determined at compile
time.
-l|--log-basename=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.
-N|--no-pass
If
specified, this parameter suppresses the normal password
prompt from the client to the user. This is useful when
accessing a service that does not require a
password.
Unless
a password is specified on the command line or this
parameter is specified, the client will request a
password.
If
a password is specified on the command line and this option
is also defined the password on the command line will be
silently ingnored and no password will be used.
-k|--kerberos
Try to
authenticate with kerberos. Only useful in an Active
Directory environment.
-C|--use-ccache
Try to
use the credentials cached by winbind.
-A|--authentication-file=filename
This
option allows you to specify a file from which to read the
username and password used in the connection. The format of
the file is
username
= <value>
password = <value>
domain = <value>
Make
certain that the permissions on the file restrict access
from unwanted users.
-U|--user=username[%password]
Sets the
SMB username or username and password.
If
%password is not specified, the user will be prompted. The
client will first check the USER environment
variable, then the LOGNAME variable and if either
exists, the string is uppercased. If these environmental
variables are not found, the username GUEST is
used.
A
third option is to use a credentials file which contains the
plaintext of the username and password. This option is
mainly provided for scripts where the admin does not wish to
pass the credentials on the command line or via environment
variables. If this method is used, make certain that the
permissions on the file restrict access from unwanted users.
See the -A for more details.
Be
cautious about including passwords in scripts. Also, on many
systems the command line of a running process may be seen
via the ps command. To be safe always allow rpcclient to
prompt for a password and type it in directly.
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 resides.
ACLs specify permissions granted to the
SID. This 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 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 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 correct for version 3 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.