path: root/WHATSNEW.txt

                   WHATS NEW IN Samba 3.0.1pre2
                         November 7, 2003
                  ==============================

This is a preview release of the Samba 3.0.1 code base and is 
provided for testing only.  This release is *not* intended for 
production servers.  Use at your own risk.

There have been several bug fixes since the 3.0.0 releaser that 
we feel are important to make available to the Samba community 
for wider testings.  See the "Changes" section for details on 
exact updates.


######################################################################
Changes
#######
Changes since 3.0.1pre1
-----------------------

Please refer to the CVS log for the SAMBA_3_0 branch for complete 
details:

1)  Match Samba 2.2 behavior; make ACB_NORMAL the default ACB value.
2)  Updated Japanese welcome file in SWAT.
3)  Fix to  nt-time <-> unix-time functions reversible.
4)  Ensure that winbindd uses the the escaped DN when querying
    an AD ldap server.
5)  Fix portability issues when compiling (bug 505, 550)
6)  Compile fix for tdbbackup when Samba needs to override 
    non-C99 compliant implementations of snprintf().
7)  Use @PICSUFFIX@ instead of .po in Makefile.in (bug 574).
8)  Make sure we break out of samsync loop on error.
9)  Ensure error code path doesn't free unmalloc()'d memory
    (bug 628).
10) Add configure test for krb5_keytab_entry keyblock vs key 
    member (bug 636).
11) Fixed spinlocks.
12) Modified testparm so that all output so all debug output goes 
    to stderr, and all file processing goes to stdout.
13) Fix error return code for BUFFER_TOO_SMALL in smbcacls 
    and smbcquotas.
14) Fix "NULL dest in safe_strcpy()" log message by ensuring that 
    we have a devmode before copying a string to the devicename.
15) Support mapping REALM.COM\user to a local user account (without 
    running winbindd)  for compatibility with 2.2.x release.
16) Ensure we don't use mmap() on blacklisted systems.
17) fixed a number of bugs and memory leaks in the AIX 
    winbindd shim
18) Call initgroups() in SWAT before becomming the user so that
    secondary group permissions can be used when writing to 
    smb.conf.
19) Fix signing problems when reverse connecting back to a 
    client for printer notify
20) Fix signing problems caused by a miss-sequence bug.
21) Missing map in errormap for ERROR_MORE_DATA -> ERRDOS, ERRmoredata.
    Fixes NEXUS tools running on Win9x clients (bug 64).
22) Don't leave the domain field uninitialized in cli_lsa.c if some 
    SID could not be mapped.
23) Fix segfault in mount.cifs helper when there is no options 
    specified during mount.
24) Change the \n after the password prompt to go to tty instead 
    of stdout (bug 668).
25) Stop net -P from prompting for machine account password (bug 451).
26) Change in behavior to Not only change the effective uid but also 
    the real uid when becoming unprivileged.
27) Cope with Exchange 5.5 cleartext pop password auth.
28) New files for support of initshutdown pipe.  Win2k doesn't 
    respond properly to all requests on the winreg pipe, so we need 
    to handle this new pipe (bug 534).
29) Added more va_copy() checks in configure.in.
30) Include fixes for libsmbclient build problems.
31) Missing UNIX -> DOS codepage conversion in lanman.c.
32) Allow DFMS-S filenames can now have arbitrary case (bug 667).
33) Parameterize the listen backlog in smbd and make it larger by
    default. A backlog of 5 is way too small these days.
34) Check for an invalid fid before dereferencing the fsp pointer
    (bug 696).
35) Remove invalid memory frees and return codes in pdb_ldap.c.
36) Prompt for password when invoking --set-auth-user and no 
    password is given.
37) Bind the nmbd sending socket to the 'socket address'.
38) Re-order link command for smbd, rpcclient and smbpasswd to ensure 
    $LDFLAGS occurs before any library specification (bug 661).
39) Fix large number of printf() calls for 64-bit size_t.
40) Fix AC_CHECK_MEMBER so that SLES8 does correctly finds the 
    keyblock in the krb5 structs.
41) Remove #include <compat.h> in hopes to avoid problems with 
    apache header files.
42) COrrect winbindd build problems on HP-UX 11
43) Lowercase netgroups lookups (bug 703).
44) Use the actual size of the buffer in strftime instead of a made 
    up value which just happens to be less than sizeof(fstring).  
    (bug 713).
45) Add ldaplibs to pdbedit link line (bug 651).
46) Fix crash bug in smbclient completion (bug 659).
47) Fix packet length for browse list reply (bug 771).
48) Fix coredump in cli_get_backup_list().
49) Make sure that we expand %N (bug 612).
50) Allow rpcclient adddriver command to specify printer driver 
    version (bug 514).
51) Compile tdbdump by default.
52) Apply patches to fix iconv detection for FreeBSD.
53) Do not allow the 'guest account' to be added to a passdb backend 
    using smbpasswd or pdbedit (bug 624).
54) Save LDFLAGS during iconv detection (bug 57).
55) Run krb5 logins through the username map if the winbindd 
    lookup fails (bug 698).
56) Add const for lp_set_name_resolve_order() to avoid compiler warnings
    (bug 471).
57) Add support for the %i macro in smb.conf to stand in for the for 
    the local IP address to which a client connected.
58) Allow winbindd to match local accounts to domain SID when 
    'winbind trusted domains only = yes' (bug 680).
59) Remove code in idmap_ldap that searches the user suffix and group 
    suffix.  It's not needed and provides inconsistent functionality 
    from the tdb backend.
60) Patch to handle munged dial string for Windows 200 TSE.
61) Correct the "smbldap_open: cannot access when not root error" 
    messages when looking up group information (bug 281).


    
Changes since 3.0.0
-------------------

Modified parameters
  * mangled map (deprecated)
  
Removed Parameters
  * mangled stack (unused)


1)  Change the interface for init_unistr2 to not take a length 
    but a flags field.  We were assuming that 
    2*strlen(mb_string) == length of ucs2-le string.  (bug 480).
2)  Allow d_printf() to handle strings with escaped quotation 
    marks since the msg file includes the escape character (bug 489).
3)  Fix bad html table row termination in SWAT wizard code (bug 413).
4)  Fix to parse the level-2 strings.
5)  Fix for "valid users = %S" in [homes].  Fix read/write 
    list as well. 
6)  Change AC_CHECK_LIB_EXT to prepend libraries instead of append.  
    This is the same way AC_CHECK_LIB works (bug 508).
7)  Testparm output fixes for clarity.
8)  Fix broken wins hook functionality -- i18n bug (bug 528).
9)  Take care of condition where DOS and NT error codes must differ.
10) Default to using only built-in charsets when a working iconv 
    implementation cannot be located.
11) Wrap internals of sys_setgroups() so the sys_XX() call can 
    be done unconditionally (bug 550).
12) Remove duplicate smbspool link on SWAT's front page (bug 541).
13) Save and restore CFLAGS before/after AC_PROG_CC.  Ensures that
    --enable-debug=[yes|no] works correctly.
14) Allow ^C to interrupt smbpasswd if using our getpass 
    (e.g. smbpasswd command).
15) Support signing only on RPC's (bug 167).
16) Correct bug that prevented  Excel 2000 clients from opening 
    files marked as read-only.
17) Portability fix bugs 546 - 549).
18) Explicitly initialize the value of AR for vendor makes that don't
    do this (e.g. HPUX 11).  (bug 552).
19) More i18n fixes for SWAT (bug 413).
20) Change the cwd before the postexec script to ensure that a
    umount will succeed.
21) Correct double free that caused winbindd to crash when a DC 
    is rebooted (bug 437).
22) Fix incorrect mode sum (bug 562).
23) Canonicalize SMB_INFO_ALLOCATION in the same was as
    SMB_FS_FULL_SIZE_INFORMATION (bug 564).
24) Add script to generate *msg files.
25) Add Dutch SWAT translation file.
26) Make sure to call get_user_groups() with the full winbindd 
    name for a user if he/she has one (bug 406).
27) Fix up error code returns from Samba4 tester. Ensure invalid 
    paths are validated the same way.  
28) Allow Samba3 to pass the Samba4 RAW-READ tests.
29) Refuse to configure if --with-expsam=$BACKEND was used but no 
    libraries were found for $BACKEND.
30) Move sysquotas autoconf tests to a separate file.
31) Match W2K w.r.t. writelock and writeclose.  Samba4 torture 
    tester
32) Make sure that the files that contain the static_init_$subsystem; 
    macro get recompiled after configure by removing the object 
    files.
33) Ensure canceling a blocking lock returns the correct error 
    message.
34) Match Samba 2.2, and make ACB_NORMAL the default ACB value.



######################################################################

              =======================================
              The original 3.0.0 release notes follow	       
              =======================================


Major new features:
-------------------

1)  Active Directory support.  Samba 3.0 is now able to  
    join a ADS realm as a member server and authenticate 
    users using LDAP/Kerberos.

2)  Unicode support. Samba will now negotiate UNICODE on the wire 
    and internally there is now a much better infrastructure for 
    multi-byte and UNICODE character sets.

3)  New authentication system. The internal authentication system 
    has been almost completely rewritten. Most of the changes are 
    internal, but the new auth system is also very configurable.

4)  New default filename mangling system.

5)  A new "net" command has been added. It is somewhat similar to 
    the "net" command in windows. Eventually we plan to replace 
    numerous other utilities (such as smbpasswd) with subcommands 
    in "net".

6)  Samba now negotiates NT-style status32 codes on the wire. This
    improves error handling a lot.

7)  Better Windows 2000/XP/2003 printing support including publishing
    printer attributes in active directory.

8)  New loadable module support for passdb backends and character 
    sets.

9)  New default dual-daemon winbindd support for better performance.

10) Support for migrating from a Windows NT 4.0 domain to a Samba 
    domain and maintaining user, group and domain SIDs.

11) Support for establishing trust relationships with Windows NT 4.0
    domain controllers.
  
12) Initial support for a distributed Winbind architecture using
    an LDAP directory for storing SID to uid/gid mappings.
  
13) Major updates to the Samba documentation tree.

14) Full support for client and server SMB signing to ensure
    compatibility with default Windows 2003 security settings.

15) Improvement of ACL mapping features based on code donated by
    Andreas Grünbacher.


Plus lots of other improvements!


Additional Documentation
------------------------

Please refer to Samba documentation tree (included in the docs/ 
subdirectory) for extensive explanations of installing, configuring
and maintaining Samba 3.0 servers and clients.  It is advised to 
begin with the Samba-HOWTO-Collection for overviews and specific 
tasks (the current book is up to approximately 400 pages) and to 
refer to the various man pages for information on individual options.

We are very glad to be able to include the second edition of
"Using Samba" by Jay Ts, Robert Eckstein, and David Collier-Brown
(O'Reilly & Associates) in this release.  The book is available
on-line at http://samba.org/samba/docs/ and is included with 
the Samba Web Administration Tool (SWAT).  Thanks to the authors and
publisher for making "Using Samba" under the GNU Free Documentation 
License.


######################################################################
Upgrading from a previous Samba 3.0 beta
########################################

Beginning with Samba 3.0.0beta3, the RID allocation functions
have been moved into winbindd.  Previously these were handled
by each passdb backend.  This means that winbindd must be running
to automatically allocate RIDs for users and/or groups.  Otherwise,
smbd will use the 2.2 algorithm for generating new RIDs.

If you are using 'passdb backend = tdbsam' with a previous Samba 
3.0 beta release (or possibly alpha), it may be necessary to 
move the RID_COUNTER entry from /usr/local/samba/private/passdb.tdb
to winbindd_idmap.tdb.  To do this:

1)  Ensure that winbindd_idmap.tdb exists (launch winbindd at least 
    once)
2)  build tdbtool by executing 'make tdbtool' in the source/tdb/ 
    directory
3)  run: (note that 'tdb>' is the tool's prompt for input)

       root# ./tdbtool /usr/local/samba/private/passdb.tdb
       tdb> show RID_COUNTER
       key 12 bytes
       RID_COUNTER
       data 4 bytes
       [000] 0A 52 00 00                                       .R.

       tdb> move RID_COUNTER /usr/local/samba/var/locks/winbindd_idmap.tdb
       ....
       record moved

If you are using 'passdb backend = ldapsam', it will be necessary to 
store idmap entries in the LDAP directory as well (i.e. idmap backend 
= ldap).  Refer to the 'net idmap' command for more information on 
migrating SID<->UNIX id mappings from one backend to another.

If the RID_COUNTER record does not exist, then these instructions are
unneccessary and the new RID_COUNTER record will be correctly generated
if needed.  



########################
Upgrading from Samba 2.2
########################

This section is provided to help administrators understand the details
involved with upgrading a Samba 2.2 server to Samba 3.0.


Building
--------

Many of the options to the GNU autoconf script have been modified 
in the 3.0 release.  The most noticeable are:

  * removal of --with-tdbsam (is now included by default; see section
    on passdb backends and authentication for more details)
    
  * --with-ldapsam is now on used to provided backward compatible
    parameters for LDAP enabled Samba 2.2 servers.  Refer to the passdb 
    backend and authentication section for more details
  
  * inclusion of non-standard passdb modules may be enabled using
    --with-expsam.  This includes an XML backend and a mysql backend.
      
  * removal of --with-msdfs (is now enabled by default)
  
  * removal of --with-ssl (no longer supported)
  
  * --with-utmp now defaults to 'yes' on supported systems
  
  * --with-sendfile-support is now enabled by default on supported 
    systems
  
    
Parameters
----------

This section contains a brief listing of changes to smb.conf options
in the 3.0.0 release.  Please refer to the smb.conf(5) man page for
complete descriptions of new or modified parameters.

Removed Parameters (order alphabetically):

  * admin log
  * alternate permissions
  * character set
  * client codepage
  * code page directory
  * coding system
  * domain admin group
  * domain guest group
  * force unknown acl user
  * nt smb support
  * postscript
  * printer driver
  * printer driver file
  * printer driver location
  * status
  * strip dot
  * total print jobs
  * use rhosts
  * valid chars
  * vfs options

New Parameters (new parameters have been grouped by function):

  Remote management
  -----------------
  * abort shutdown script
  * shutdown script

  User and Group Account Management
  ---------------------------------
  * add group script
  * add machine script
  * add user to group script
  * algorithmic rid base
  * delete group script
  * delete user from group script
  * passdb backend
  * set primary group script

  Authentication
  --------------
  * auth methods
  * realm

  Protocol Options
  ----------------
  * client lanman auth
  * client NTLMv2 auth
  * client schannel
  * client signing
  * client use spnego
  * disable netbios
  * ntlm auth
  * paranoid server security
  * server schannel
  * server signing
  * smb ports
  * use spnego

  File Service
  ------------
  * get quota command
  * hide special files
  * hide unwriteable files
  * hostname lookups
  * kernel change notify
  * mangle prefix
  * map acl inherit
  * msdfs proxy
  * set quota command
  * use sendfile
  * vfs objects
  
  Printing
  --------
  * max reported print jobs

  UNICODE and Character Sets
  --------------------------
  * display charset
  * dos charset
  * unicode
  * unix charset
  
  SID to uid/gid Mappings
  -----------------------
  * idmap backend
  * idmap gid
  * idmap uid
  * winbind enable local accounts
  * winbind trusted domains only
  * template primary group
  * enable rid algorithm

  LDAP
  ----
  * ldap delete dn
  * ldap group suffix
  * ldap idmap suffix
  * ldap machine suffix
  * ldap passwd sync
  * ldap user suffix
  
  General Configuration
  ---------------------
  * preload modules
  * private dir

Modified Parameters (changes in behavior):

  * encrypt passwords (enabled by default)
  * mangling method (set to 'hash2' by default)
  * passwd chat
  * passwd program
  * restrict anonymous (integer value)
  * security (new 'ads' value)
  * strict locking (enabled by default)
  * unix extensions (enabled by default)
  * winbind cache time (increased to 5 minutes)
  * winbind uid (deprecated in favor of 'idmap uid')
  * winbind gid (deprecated in favor of 'idmap gid')


Databases
---------

This section contains brief descriptions of any new databases 
introduced in Samba 3.0.  Please remember to backup your existing 
${lock directory}/*tdb before upgrading to Samba 3.0.  Samba will 
upgrade databases as they are opened (if necessary), but downgrading 
from 3.0 to 2.2 is an unsupported path.

Name                    Description                             Backup?
----                    -----------                             -------
account_policy          User policy settings                    yes
gencache                Generic caching db                      no
group_mapping           Mapping table from Windows              yes
                        groups/SID to unix groups        
winbindd_idmap          ID map table from SIDS to UNIX          yes
                        uids/gids.
namecache               Name resolution cache entries           no
netsamlogon_cache       Cache of NET_USER_INFO_3 structure      no
                        returned as part of a successful
                        net_sam_logon request 
printing/*.tdb          Cached output from 'lpq                 no
                        command' created on a per print 
                        service basis
registry                Read-only samba registry skeleton       no
                        that provides support for exporting
                        various db tables via the winreg RPCs


Changes in Behavior
-------------------

The following issues are known changes in behavior between Samba 2.2 and 
Samba 3.0 that may affect certain installations of Samba.

  1)  When operating as a member of a Windows domain, Samba 2.2 would 
      map any users authenticated by the remote DC to the 'guest account'
      if a uid could not be obtained via the getpwnam() call.  Samba 3.0
      rejects the connection as NT_STATUS_LOGON_FAILURE.  There is no 
      current work around to re-establish the 2.2 behavior.
      
  2)  When adding machines to a Samba 2.2 controlled domain, the 
      'add user script' was used to create the UNIX identity of the 
      machine trust account.  Samba 3.0 introduces a new 'add machine 
      script' that must be specified for this purpose.  Samba 3.0 will
      not fall back to using the 'add user script' in the absence of 
      an 'add machine script'
  

######################################################################
Passdb Backends and Authentication
##################################

There have been a few new changes that Samba administrators should be
aware of when moving to Samba 3.0.

  1) encrypted passwords have been enabled by default in order to 
     inter-operate better with out-of-the-box Windows client 
     installations.  This does mean that either (a) a samba account
     must be created for each user, or (b) 'encrypt passwords = no'
     must be explicitly defined in smb.conf.
    
  2) Inclusion of new 'security = ads' option for integration 
     with an Active Directory domain using the native Windows
     Kerberos 5 and LDAP protocols.

     MIT kerberos 1.3.1 supports the ARCFOUR-HMAC-MD5 encryption 
     type which is neccessary for servers on which the 
     administrator password has not been changed, or kerberos-enabled 
     SMB connections to servers that require Kerberos SMB signing.
     Besides this one difference, either MIT or Heimdal Kerberos
     distributions are usable by Samba 3.0.
     

Samba 3.0 also includes the possibility of setting up chains
of authentication methods (auth methods) and account storage 
backends (passdb backend).  Please refer to the smb.conf(5) 
man page for details.  While both parameters assume sane default 
values, it is likely that you will need to understand what the 
values actually mean in order to ensure Samba operates correctly.

The recommended passdb backends at this time are

  * smbpasswd - 2.2 compatible flat file format
  * tdbsam - attribute rich database intended as an smbpasswd
    replacement for stand alone servers
  * ldapsam - attribute rich account storage and retrieval 
    backend utilizing an LDAP directory.  
  * ldapsam_compat - a 2.2 backward compatible LDAP account 
    backend
    
Certain functions of the smbpasswd(8) tool have been split between the 
new smbpasswd(8) utility, the net(8) tool, and the new pdbedit(8) 
utility.  See the respective man pages for details.
    
     
######################################################################
LDAP
####

This section outlines the new features affecting Samba / LDAP 
integration.

New Schema
----------
  
A new object class (sambaSamAccount) has been introduced to replace 
the old sambaAccount.  This change aids us in the renaming of attributes 
to prevent clashes with attributes from other vendors.  There is a 
conversion script (examples/LDAP/convertSambaAccount) to modify and LDIF 
file to the new schema.
  
Example:
  
	$ ldapsearch .... -b "ou=people,dc=..." > old.ldif
	$ convertSambaAccount <DOM SID> old.ldif new.ldif
	
The <DOM SID> can be obtained by running 'net getlocalsid <DOMAINNAME>' 
on the Samba PDC as root.
    
The old sambaAccount schema may still be used by specifying the 
"ldapsam_compat" passdb backend.  However, the sambaAccount and
associated attributes have been moved to the historical section of
the schema file and must be uncommented before use if needed.
The 2.2 object class declaration for a sambaAccount has not changed
in the 3.0 samba.schema file. 
  
Other new object classes and their uses include:
  
  * sambaDomain - domain information used to allocate rids 
    for users and groups as necessary.  The attributes are added
    in 'ldap suffix' directory entry automatically if 
    an idmap uid/gid range has been set and the 'ldapsam'
    passdb backend has been selected.
      
  * sambaGroupMapping - an object representing the 
    relationship between a posixGroup and a Windows
    group/SID.  These entries are stored in the 'ldap 
    group suffix' and managed by the 'net groupmap' command.
    
  * sambaUnixIdPool - created in the 'ldap idmap suffix' entry 
    automatically and contains the next available 'idmap uid' and 
    'idmap gid'
    
  * sambaIdmapEntry - object storing a mapping between a 
    SID and a UNIX uid/gid.  These objects are created by the 
    idmap_ldap module as needed.

  * sambaSidEntry - object representing a SID alone, as a Structural
    class on which to build the sambaIdmapEntry.

    
New Suffix for Searching
------------------------
  
The following new smb.conf parameters have been added to aid in directing
certain LDAP queries when 'passdb backend = ldapsam://...' has been
specified.

  * ldap suffix         - used to search for user and computer accounts
  * ldap user suffix    - used to store user accounts
  * ldap machine suffix - used to store machine trust accounts
  * ldap group suffix   - location of posixGroup/sambaGroupMapping entries
  * ldap idmap suffix   - location of sambaIdmapEntry objects

If an 'ldap suffix' is defined, it will be appended to all of the 
remaining sub-suffix parameters.  In this case, the order of the suffix
listings in smb.conf is important.  Always place the 'ldap suffix' first
in the list.  

Due to a limitation in Samba's smb.conf parsing, you should not surround 
the DN's with quotation marks.


IdMap LDAP support
------------------

Samba 3.0 supports an ldap backend for the idmap subsystem.  The 
following options would inform Samba that the idmap table should be
stored on the directory server onterose in the "ou=idmap,dc=plainjoe,
dc=org" partition.

 [global]
    ...
    idmap backend     = ldap:ldap://onterose/
    ldap idmap suffix = ou=idmap,dc=plainjoe,dc=org
    idmap uid         = 40000-50000
    idmap gid         = 40000-50000

This configuration allows winbind installations on multiple servers to
share a uid/gid number space, thus avoiding the interoperability problems
with NFS that were present in Samba 2.2.
    


######################################################################
Trust Relationships and a Samba Domain
######################################

Samba 3.0.0beta2 is able to utilize winbindd as the means of 
allocating uids and gids to trusted users and groups.  More
information regarding Samba's support for establishing trust 
relationships can be found in the Samba-HOWTO-Collection included
in the docs/ directory of this release.

First create your Samba PDC and ensure that everything is 
working correctly before moving on the trusts.

To establish Samba as the trusting domain (named SAMBA) from a Windows NT
4.0 domain named WINDOWS:

  1) create the trust account for SAMBA in "User Manager for Domains"
  2) connect the trust from the Samba domain using
     'net rpc trustdom establish GLASS'

To create a trustlationship with SAMBA as the trusted domain:

  1) create the initial trust account for GLASS using
     'smbpasswd -a -i GLASS'.  You may need to create a UNIX
     account for GLASS$ prior to this step (depending on your
     local configuration).
  2) connect the trust from a WINDOWS DC using "User Manager
     for Domains"

Now join winbindd on the Samba PDC to the SAMBA domain using
the normal steps for adding a Samba server to an NT4 domain:
(note that smbd & nmbd must be running at this point)

   root# net rpc join -U root
   Password: <enter root password from smbpasswd file here>

Start winbindd and test the join with 'wbinfo -t'.

Now test the trust relationship by connecting to the SAMBA DC
(e.g. POGO) as a user from the WINDOWS domain:

   $ smbclient //pogo/netlogon -U Administrator -W WINDOWS
   Password:

Now connect to the WINDOWS DC (e.g. CRYSTAL) as a Samba user:

   $ smbclient //crystal/netlogon -U root -W WINDOWS
   Password:

######################################################################
Changes in Winbind
##################

Beginning with Samba3.0.0beta3, winbindd has been given new account
manage functionality equivalent to the 'add user script' family of
smb.conf parameters.  The idmap design has also been changed to 
centralize control of foreign SID lookups and matching to UNIX 
uids and gids.


Brief Description of Changes
----------------------------

1) The sid_to_uid() family of functions (smbd/uid.c) have been 
   reverted to the 2.2.x design.  This means that when resolving a 
   SID to a UID or similar mapping:

        a) First consult winbindd
        b) perform a local lookup only if winbindd fails to
           return a successful answer

   There are some variations to this, but these two rules generally
   apply.

2) All idmap lookups have been moved into winbindd.  This means that
   a server must run winbindd (and support NSS) in order to achieve
   any mappings of SID to dynamically allocated UNIX ids.  This was
   a conscious design choice.

3) New functions have been added to winbindd to emulate the 'add user 
   script' family of smbd functions without requiring that external
   scripts be defined.  This functionality is controlled by the 'winbind 
   enable local accounts' smb.conf parameter (enabled by default).

   However, this account management functionality is only supported 
   in a local tdb (winbindd_idmap.tdb).  If these new UNIX accounts 
   must be shared among multiple Samba servers (such as a PDC and BDCs), 
   it will be necessary to define your own 'add user script', et. al.
   programs that place the accounts/groups in some form of directory
   such as NIS or LDAP.  This requirement was deemed beyond the scope
   of winbind's account management functions.  Solutions for 
   distributing UNIX system information have been deployed and tested 
   for many years.  We saw no need to reinvent the wheel.

4) A member of a Samba controlled domain running winbindd is now able 
   to map domain users directly onto existing UNIX accounts while still
   automatically creating accounts for trusted users and groups.  This
   behavior is controlled by the 'winbind trusted domains only' smb.conf
   parameter (disabled by default to provide 2.2.x winbind behavior).

5) Group mapping support is wrapped in the local_XX_to_XX() functions
   in smbd/uid.c.  The reason that group mappings are not included
   in winbindd is because the purpose of Samba's group map is to
   match any Windows SID with an existing UNIX group.  These UNIX
   groups can be created by winbindd (see next section), but the
   SID<->gid mapping is retreived by smbd, not winbindd.


Examples
--------

* security = server running winbindd to allocate accounts on demand

* Samba PDC running winbindd to handle the automatic creation of UNIX
  identities for machine trust accounts

* Automtically creating UNIX user and groups when migrating a Windows NT
  4.0 PDC to a Samba PDC.  Winbindd must be running when executing
  'net rpc vampire' for this to work.

   
######################################################################
Known Issues
############

* There are several bugs currently logged against the 3.0 codebase
  that affect the use of NT 4.0 GUI domain management tools when run
  against a Samba 3.0 PDC.  This bugs should be released in an early 
  3.0.x release.

Please refer to https://bugzilla.samba.org/ for a current list of bugs 
filed against the Samba 3.0 codebase.


######################################################################
Reporting bugs & Development Discussion
#######################################

Please discuss this release on the samba-technical mailing list or by
joining the #samba-technical IRC channel on irc.freenode.net.

If you do report problems then please try to send high quality
feedback. If you don't provide vital information to help us track down
the problem then you will probably be ignored.  

A new bugzilla installation has been established to help support the 
Samba 3.0 community of users.  This server, located at 
https://bugzilla.samba.org/, has replaced the older jitterbug server 
previously located at http://bugs.samba.org/.