[Samba] NT ACL preservation

Wed Nov 11 08:34:43 UTC 2015

On 10/11/15 23:46, Andrew Hart wrote:
> On Tue, 10 Nov 2015 23:04:59 -0000, Andrew Hart <fraggle at achart.me.uk> 
> wrote:
>
>> On Tue, 10 Nov 2015 07:53:18 -0000, Rowland Penny 
>> <rowlandpenny241155 at gmail.com> wrote:Attac
>>
>>
>>>
>>> Can we see your entire smb.conf?
>>>
>>> Rowland
>>>
>>>
>>
>> Attached
>>
>
> Ok - I'm not sure attachments work here, I'll copy and paste. Btw, I'm 
> using up-to-date Arch and my Samba version is 4.3.1:
>
> # This is the main Samba configuration file. You should read the
> # smb.conf(5) manual page in order to understand the options listed
> # here. Samba has a huge number of configurable options (perhaps too
> # many!) most of which are not shown in this example
> #
> # Any line which starts with a ; (semi-colon) or a # (hash)
> # is a comment and is ignored. In this example we will use a #
> # for commentry and a ; for parts of the config file that you
> # may wish to enable
> #
> # NOTE: Whenever you modify this file you should run the command 
> "testparm"
> # to check that you have not made any basic syntactic errors.
> #
> #======================= Global Settings 
> =====================================
> [global]
>
> #vfs objects = acl_xattr
> #map acl inherit = yes
> #store dos attributes = yes
>    map to guest = Bad User
>
> # workgroup = NT-Domain-Name or Workgroup-Name
>    workgroup = frls
>
> # server string is the equivalent of the NT Description field
>    server string = marjory data storage
>
> # This option is important for security. It allows you to restrict
> # connections to machines which are on your local network. The
> # following example restricts access to two C class networks and
> # the "loopback" interface. For more examples of the syntax see
> # the smb.conf man page
>    hosts allow = 192.168.0. 127.
>
> # if you want to automatically load your printer list rather
> # than setting them up individually then you'll need this
> ;   printcap name = /etc/printcap
> ;   load printers = yes
>
> # It should not be necessary to spell out the print system type unless
> # yours is non-standard. Currently supported print systems include:
> # bsd, sysv, plp, lprng, aix, hpux, qnx
> ;   printing = bsd
>
> # Uncomment this if you want a guest account, you must add this to 
> /etc/passwd
> # otherwise the user "nobody" is used
>   guest account = guest
>
> # this tells Samba to use a separate log file for each machine
> # that connects
>    log file = /var/log/samba/%m.log
>
> # Put a capping on the size of the log files (in Kb).
>    max log size = 50
>
> # Security mode. Most people will want user level security. See
> # security_level.txt for details.
>    security = user
> # Use password server option only with security = server
> ;   password server = <NT-Server-Name>
>
> # Password Level allows matching of _n_ characters of the password for
> # all combinations of upper and lower case.
> ;  username level = 8
>
> # You may wish to use password encryption. Please read
> # ENCRYPTION.txt, Win95.txt and WinNT.txt in the Samba documentation.
> # Do not enable this option unless you have read those documents
> ;  encrypt passwords = yes
> ;  smb passwd file = /etc/samba/smbpasswd
>
> # The following are needed to allow password changing from Windows to
> # update the Linux sytsem password also.
> # NOTE: Use these with 'encrypt passwords' and 'smb passwd file' above.
> # NOTE2: You do NOT need these to allow workstations to change only
> #        the encrypted SMB passwords. They allow the Unix password
> #        to be kept in sync with the SMB password.
> ;  unix password sync = Yes
> ;  passwd program = /usr/bin/passwd %u
> ;  passwd chat = *New*UNIX*password* %n\n *ReType*new*UNIX*password* 
> %n\n *passwd:*all*authentication*tokens*updated*successfully*
>
> # Unix users can map to different SMB User names
> ;  username map = /etc/samba/smbusers
>
> # Using the following line enables you to customise your configuration
> # on a per machine basis. The %m gets replaced with the netbios name
> # of the machine that is connecting
> ;   include = /etc/samba/smb.conf.%m
>
> # Configure Samba to use multiple interfaces
> # If you have multiple network interfaces then you must list them
> # here. See the man page for details.
> ;   interfaces = 192.168.12.2/24 192.168.13.2/24
>
> # Configure remote browse list synchronisation here
> #  request announcement to, or browse list sync from:
> #    a specific host or from / to a whole subnet (see below)
> ;   remote browse sync = 192.168.3.25 192.168.5.255
> # Cause this host to announce itself to local subnets here
>    remote announce = 192.168.0.255
>
> # Browser Control Options:
> # set local master to no if you don't want Samba to become a master
> # browser on your network. Otherwise the normal election rules apply
> ;   local master = no
>
> # OS Level determines the precedence of this server in master browser
> # elections. The default value should be reasonable
> ;   os level = 33
>
> # Domain Master specifies Samba to be the Domain Master Browser. This
> # allows Samba to collate browse lists between subnets. Don't use this
> # if you already have a Windows NT domain controller doing this job
>    domain master = yes
>
> # Preferred Master causes Samba to force a local browser election on 
> startup
> # and gives it a slightly higher chance of winning the election
>    preferred master = yes
>
> # Use only if you have an NT server on your network that has been
> # configured at install time to be a primary domain controller.
> ;   domain controller = <NT-Domain-Controller-SMBName>
>
> # Enable this if you want Samba to be a domain logon server for
> # Windows95 workstations.
> ;   domain logons = yes
>
> # if you enable domain logons then you may want a per-machine or
> # per user logon script
> # run a specific logon batch file per workstation (machine)
> ;   logon script = %m.bat
> # run a specific logon batch file per username
> ;   logon script = %U.bat
>
> # Where to store roving profiles (only for Win95 and WinNT)
> #        %L substitutes for this servers netbios name, %U is username
> #        You must uncomment the [Profiles] share below
> ;   logon path = \\%L\Profiles\%U
>
> # All NetBIOS names must be resolved to IP Addresses
> # 'Name Resolve Order' allows the named resolution mechanism to be 
> specified
> # the default order is "host lmhosts wins bcast". "host" means use the 
> unix
> # system gethostbyname() function call that will use either /etc/hosts OR
> # DNS or NIS depending on the settings of /etc/host.config, 
> /etc/nsswitch.conf
> # and the /etc/resolv.conf file. "host" therefore is system configuration
> # dependant. This parameter is most often of use to prevent DNS lookups
> # in order to resolve NetBIOS names to IP Addresses. Use with care!
> # The example below excludes use of name resolution for machines that 
> are NOT
> # on the local network segment
> # - OR - are not deliberately to be known via lmhosts or via WINS.
> ; name resolve order = wins lmhosts bcast
>
> # Windows Internet Name Serving Support Section:
> # WINS Support - Tells the NMBD component of Samba to enable it's WINS 
> Server
> ;   wins support = yes
>
> # WINS Server - Tells the NMBD components of Samba to be a WINS Client
> #    Note: Samba can be either a WINS Server, or a WINS Client, but 
> NOT both
> ;   wins server = w.x.y.z
>
> # WINS Proxy - Tells Samba to answer name resolution queries on
> # behalf of a non WINS capable client, for this to work there must be
> # at least one    WINS Server on the network. The default is NO.
> ;   wins proxy = yes
>
> # DNS Proxy - tells Samba whether or not to try to resolve NetBIOS names
> # via DNS nslookups. The built-in default for versions 1.9.17 is yes,
> # this has been changed in version 1.9.18 to no.
>    dns proxy = no
>
> # Case Preservation can be handy - system default is _no_
> # NOTE: These can be set on a per share basis
>   preserve case = yes
>   short preserve case = yes
> # Default case is normally upper case for all DOS files
> ;  default case = lower
> # Be very careful with case sensitivity - it can break things!
> ;  case sensitive = no
>
> #============================ Share Definitions 
> ==============================
> ;[homes]
> ;   comment = Home Directories
> ;   browseable = no
> ;   writable = yes
>
> # Un-comment the following and create the netlogon directory for 
> Domain Logons
> ; [netlogon]
> ;   comment = Network Logon Service
> ;   path = /home/netlogon
> ;   guest ok = yes
> ;   writable = no
> ;   share modes = no
>
>
> # Un-comment the following to provide a specific roving profile share
> # the default is to use the user's home directory
> ;[Profiles]
> ;    path = /home/profiles
> ;    browseable = no
> ;    guest ok = yes
>
>
> # NOTE: If you have a BSD-style print system there is no need to
> # specifically define each individual printer
> ;[printers]
> ;   comment = All Printers
> ;   path = /var/spool/samba
> ;   browseable = no
> # Set public = yes to allow user 'guest account' to print
> ;   guest ok = no
> ;   writable = no
> ;   printable = yes
>
> # This one is useful for people to share files
> ;[tmp]
> ;   comment = Temporary file space
> ;   path = /tmp
> ;   read only = no
> ;   public = yes
>
> # A publicly accessible directory, but read only, except for people in
> # the "staff" group
> ;[public]
> ;   comment = Public Stuff
> ;   path = /home/samba
> ;   public = yes
> ;   read only = yes
> ;   write list = @staff
>
> # Other examples.
> #
> # A private printer, usable only by fred. Spool data will be placed in 
> fred's
> # home directory. Note that fred must have write access to the spool 
> directory,
> # wherever it is.
> ;[fredsprn]
> ;   comment = Fred's Printer
> ;   valid users = fred
> ;   path = /homes/fred
> ;   printer = freds_printer
> ;   public = no
> ;   writable = no
> ;   printable = yes
>
> # A private directory, usable only by fred. Note that fred requires write
> # access to the directory.
> ;[fredsdir]
> ;   comment = Fred's Service
> ;   path = /usr/somewhere/private
> ;   valid users = fred
> ;   public = no
> ;   writable = yes
> ;   printable = no
>
> # a service which has a different directory for each machine that 
> connects
> # this allows you to tailor configurations to incoming machines. You 
> could
> # also use the %u option to tailor it by user name.
> # The %m gets replaced with the machine name that is connecting.
> ;[pchome]
> ;  comment = PC Directories
> ;  path = /usr/pc/%m
> ;  public = no
> ;  writable = yes
>
> # A publicly accessible directory, read/write to all users. Note that 
> all files
> # created in the directory by users will be owned by the default user, so
> # any user with access can delete any other user's files. Obviously this
> # directory must be writable by the default user. Another user could 
> of course
> # be specified, in which case all files would be owned by that user 
> instead.
> ;[public]
> ;   path = /usr/somewhere/else/public
> ;   public = yes
> ;   only guest = yes
> ;   writable = yes
> ;   printable = no
>
> # The following two entries demonstrate how to share a directory so 
> that two
> # users can place files there that will be owned by the specific 
> users. In this
> # setup, the directory should be writable by both users and should 
> have the
> # sticky bit set on it to prevent abuse. Obviously this could be 
> extended to
> # as many users as required.
> ;[myshare]
> ;   comment = Mary's and Fred's stuff
> ;   path = /usr/somewhere/shared
> ;   valid users = mary fred
> ;   public = no
> ;   writable = yes
> ;   printable = no
> ;   create mask = 0765
>
>
> [backup]
>   comment = PC backups
>   path = /mnt/storage/backup
>   valid users = @wheel
>   public = no
>   writable = yes
> #  vfs objects = btrfs
>   vfs objects = btrfs acl_xattr
> #  acl_xattr: ignore system acls = yes
> #  map acl inherit = yes
>   store dos attributes = yes
>
> [media]
>   comment = Public media folder
>   path = /mnt/storage/media
>   guest ok = yes
>   read only = yes
>   write list = @wheel
>   force user = root
>   force group = wheel
>   create mask = 0664
>   directory mask = 0775
>
> [photos]
>   comment = Photos
>   path = /mnt/storage/photos
>   valid users = fraggle
>   writable = yes
>   force user = fraggle
>   force group = fraggle
>   create mask = 0660
>   directory mask = 0770
>
>

You seem to be running as an NT-4 style domain controller, but without 
the usual things that go with it. You also seem to be using 'guest' as 
the guest user, do you actually have a user called guest?
Do your users exist on the computer as local Unix users *and* Samba users?

Oh and next time, could you please remove any commented lines from your 
smb.conf before posting it, the [global] part of yours boils down to this:

[global]
    map to guest = Bad User
    workgroup = frls
    server string = marjory data storage
    hosts allow = 192.168.0. 127.
    guest account = guest
    log file = /var/log/samba/%m.log
    max log size = 50
    security = user
    remote announce = 192.168.0.255
    domain master = yes
    preferred master = yes
    dns proxy = no
    preserve case = yes
    short preserve case = yes

Rowland