Release Announcements ===================== This is the fourth release candidate of Samba 4.10. This is *not* intended for production environments and is designed for testing purposes only. Please report any defects via the Samba bug reporting system at https://bugzilla.samba.org/. Samba 4.10 will be the next version of the Samba suite. UPGRADING ========= NEW FEATURES/CHANGES ==================== GPO Improvements ---------------- A new 'samba-tool gpo backup' command has been added that can export a set of Group Policy Objects from a domain in a generalised XML format. A corresponding 'samba-tool gpo restore' command has been added to rebuild the Group Policy Objects from the XML after generalization. (The administrator needs to correct the values of XML entities between the backup and restore to account for the change in domain). KDC prefork ----------- The KDC now supports the pre-fork process model and worker processes will be forked for the KDC when the pre-fork process model is selected for samba. Prefork 'prefork children' -------------------------- The default value for this smdb.conf parameter has been increased from 1 to 4. Netlogon prefork ---------------- DCERPC now supports pre-forked NETLOGON processes. The netlogon processes are pre-forked when the prefork process model is selected for samba. Offline domain backups ---------------------- The 'samba-tool domain backup' command has been extended with a new 'offline' option. This safely creates a backup of the local DC's database directly from disk. The main benefits of an offline backup are it's quicker, it stores more database details (for forensic purposes), and the samba process does not have to be running when the backup is made. Refer to the samba-tool help for more details on using this command. Group membership statistics --------------------------- A new 'samba-tool group stats' command has been added. This provides summary information about how the users are spread across groups in your domain. The 'samba-tool group list --verbose' command has also been updated to include the number of users in each group. Paged results LDAP control -------------------------- The behaviour of the paged results control (1.2.840.113556.1.4.319, RFC2696) has been changed to more closely match Windows servers, to improve memory usage. Paged results may be used internally (or is requested by the user) by LDAP libraries or tools that deal with large result sizes, for example, when listing all the objects in the database. Previously, results were returned as a snapshot of the database but now, some changes made to the set of results while paging may be reflected in the responses. If strict inter-record consistency is required in answers (which is not possible on Windows with large result sets), consider avoiding the paged results control or alternatively, it might be possible to enforce restrictions using the LDAP filter expression. For further details see https://wiki.samba.org/index.php/Paged_Results Prefork process restart ----------------------- The pre-fork process model now restarts failed processes. The delay between restart attempts is controlled by the "prefork backoff increment" (default = 10) and "prefork maximum backoff" (default = 120) smbd.conf parameters. A linear back off strategy is used with "prefork backoff increment" added to the delay between restart attempts up until it reaches "prefork maximum backoff". Using the default sequence the restart delays (in seconds) are: 0, 10, 20, ..., 120, 120, ... Standard process model ---------------------- When using the standard process model samba forks a new process to handle ldap and netlogon connections. Samba now honours the 'max smbd processes' smb.conf parameter. The default value of 0, indicates there is no limit. The limit is applied individually to netlogon and ldap. When the process limit is exceeded Samba drops new connections immediately. python3 support --------------- This is the first release of Samba which has full support for Python 3. Samba 4.10 still has support for Python 2, however, Python 3 will be used by default, i.e. 'configure' & 'make' will execute using python3. To build Samba with python2 you *must* set the 'PYTHON' environment variable for both the 'configure' and 'make' steps, i.e. 'PYTHON=python2 ./configure' 'PYTHON=python2 make' This will override the python3 default. Alternatively, it is possible to produce Samba Python bindings for both Python 2 and Python 3. To do so, specify '--extra-python=/usr/bin/python2' as part of the 'configure' command. Note that python3 will still be used as the default in this case. Note that Samba 4.10 supports Python 3.4 onwards. Future Python support --------------------- Samba 4.10 will be the last release that comes with full support for Python 2. Unfortunately, the Samba Team doesn't have the resources to support both Python 2 and Python 3 long-term. Samba 4.11 will not have any runtime support for Python 2. This means if you use Python 2 bindings it is time to migrate to Python 3 now. If you are building Samba using the '--disable-python' option (i.e. you're excluding all the run-time Python support), then this will continue to work on a system that supports either python2 or python3. Also note that Samba 4.11 will most likely only support Python 3.6 onwards. JSON logging ------------ Authentication messages now contain the Windows Event Id "eventId" and logon type "logonType". The supported event codes and logon types are: Event codes: 4624 Successful logon 4625 Unsuccessful logon Logon Types: 2 Interactive 3 Network 8 NetworkCleartext The version number for Authentication messages is now 1.1, changed from 1.0 Password change messages now contain the Windows Event Id "eventId", the supported event Id's are: 4723 Password changed 4724 Password reset The version number for PasswordChange messages is now 1.1, changed from 1.0 Group membership change messages now contain the Windows Event Id "eventId", the supported event Id's are: 4728 A member was added to a security enabled global group 4729 A member was removed from a security enabled global group 4732 A member was added to a security enabled local group 4733 A member was removed from a security enabled local group 4746 A member was added to a security disabled local group 4747 A member was removed from a security disabled local group 4751 A member was added to a security disabled global group 4752 A member was removed from a security disabled global group 4756 A member was added to a security enabled universal group 4757 A member was removed from a security enabled universal group 4761 A member was added to a security disabled universal group 4762 A member was removed from a security disabled universal group The version number for GroupChange messages is now 1.1, changed from 1.0. Also A GroupChange message is generated when a new user is created to log that the user has been added to their primary group. The leading "JSON :" and source file prefix of the JSON formatted log entries has been removed to make the parsing of the JSON log messages easier. JSON log entries now start with 2 spaces followed by an opening brace i.e. " {" SMBv2 samba-tool support ------------------------ On previous releases, some samba-tool commands would not work against a remote DC that had SMBv1 disabled. SMBv2 support has now been added for samba-tool. The affected commands are 'samba-tool domain backup|rename' and the 'samba-tool gpo' set of commands. Refer also bug #13676. REMOVED FEATURES ================ MIT Kerberos build of the AD DC ------------------------------- While not removed, the MIT Kerberos build of the Samba AD DC is still considered experimental. Because Samba will not issue security patches for this configuration, such builds now require the explicit configure option: --with-experimental-mit-ad-dc For further details see https://wiki.samba.org/index.php/Running_a_Samba_AD_DC_with_MIT_Kerberos_KDC samba_backup ------------ The samba_backup script has been removed. This has now been replaced by the 'samba-tool domain backup offline' command. SMB client Python bindings -------------------------- The SMB client python bindings are now deprecated and will be removed in future Samba releases. This will only affects users that may have used the Samba Python bindings to write their own utilities, i.e. users with a custom Python script that includes the line 'from samba import smb'. smb.conf changes ================ Parameter Name Description Default -------------- ----------- ------- prefork backoff increment Delay added to process restart 10 (seconds) between attempts. prefork maximum backoff Maximum delay for process between 120 (seconds) process restart attempts smbd search ask sharemode Name changed, old name was "smbd:search ask sharemode" smbd async dosmode Name changed, old name was "smbd:async dosmode" smbd max async dosmode Name changed, old name was "smbd:max async dosmode" smbd getinfo ask sharemode New: similar to "smbd search ask yes sharemode" but for SMB getinfo CHANGES SINCE 4.10.0rc3 ======================= o Jeremy Allison * BUG 13803: SMB1 POSIX mkdir does case insensitive name lookup. o Ralph Boehme * BUG 13802: Fix idmap xid2sid cache issue. o David Disseldorp * BUG 13807: vfs_ceph strict_allocate_ftruncate calls (local FS) ftruncate and fallocate. o Volker Lendecke * BUG 13786: messages_dgm: Properly handle receiver re-initialization. o Gary Lockyer * BUG 13765: man pages: Document prefork process model. * BUG 13773: CVE-2019-3824 ldb: wildcard_match end of data check. o Stefan Metzmacher * tdb: Fix compatibility of wscript with older python. * tevent: version 0.9.39 * BUG 13773: CVE-2019-3824 ldb: version 1.5.4 o David Mulder * Search for location of waf script. o Noel Power * BUG 13777: buildtools/wafsamba: Avoid decode when using python2. o Jiří Šašek * BUG 13704: notifyd: Fix SIGBUS on sparc. o Swen Schillig * BUG 13791: ctdb: Buffer write beyond limits. o Lukas Slebodnik * BUG 13773: CVE-2019-3824 ldb: Out of bound read in ldb_wildcard_compare. o Martin Schwenke * BUG 13790: ctdb-config: Change example recovery lock setting to one that fails. * BUG 13800: Fix recovery lock bug. CHANGES SINCE 4.10.0rc2 ======================= o Jeremy Allison * BUG 13690: smbd: uid: Don't crash if 'force group' is added to an existing share connection. * BUG 13770: s3: VFS: vfs_fruit. Fix the NetAtalk deny mode compatibility code. o Andrew Bartlett * ldb: Release ldb 1.5.3 * BUG 13762: Avoid inefficient one-level searches. * BUG 13772: The test api.py should not rely on order of entries in dict. o Tim Beale * BUG 13762: ldb: Avoid inefficient one-level searches. o Ralph Boehme * BUG 13776: tldap: Avoid use after free errors. o Günther Deschner * BUG 13746: s3-smbd: Use fruit:model string for mDNS registration. o David Disseldorp * BUG 13766: printing: Check lp_load_printers() prior to pcap cache update. o Christof Schmitt * BUG 13787: waf: Check for libnscd. o Andreas Schneider * BUG 13770: s3:vfs: Correctly check if OFD locks should be enabled or not. * BUG 13778: Public ZERO_STRUCT() uses undefined C11 function memset_s(). CHANGES SINCE 4.10.0rc1 ======================= o Jeremy Allison * BUG 13750: libcli: dns: Change internal DNS_REQUEST_TIMEOUT from 2 to 10 seconds. o Tim Beale * BUG 13676: samba-tool SMB/sysvol connections do not work if SMBv1 is disabled. * BUG 13747: join: Throw CommandError instead of Exception for simple errors. o Günther Deschner * BUG 13774: s3-vfs: Add glusterfs_fuse vfs module. o Volker Lendecke * BUG 13742: ctdb: Print locks latency in machinereadable stats. o Stefan Metzmacher * BUG 13752: s4:server: Add support for 'smbcontrol samba shutdown'. o Anoop C S * BUG 13330: vfs_glusterfs: Adapt to changes in libgfapi signatures. * BUG 13774: s3-vfs: Use ENOATTR in errno comparison for getxattr. o Justin Stephenson * BUG 13727: s3:libsmb: Honor disable_netbios option in smbsock_connect_send. KNOWN ISSUES ============ https://wiki.samba.org/index.php/Release_Planning_for_Samba_4.10#Release_blocking_bugs ####################################### 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. All bug reports should be filed under the Samba 4.1 and newer product in the project's Bugzilla database (https://bugzilla.samba.org/). ====================================================================== == Our Code, Our Bugs, Our Responsibility. == The Samba Team ======================================================================