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2012-05-14move the dbwrap library to the top levelMichael Adam14-2812/+2
Autobuild-User: Michael Adam <obnox@samba.org> Autobuild-Date: Mon May 14 04:04:55 CEST 2012 on sn-devel-104
2012-05-13s3:lib:dbwrap: use [u]int[num]_t consistently in dbwrap_tdb.cMichael Adam1-1/+1
2012-05-13s3:lib:dbwrap: use [u]int[num]_t consistently in dbwrap_rbt.cMichael Adam1-2/+2
2012-05-13s3:lib:dbwrap: use [u]int[num]_t consistently in dbwrap_ctdb.cMichael Adam1-6/+8
2012-05-13s3:lib:dbwrap: use [u]int[num]_t consistently in dbwrap_file.cMichael Adam1-6/+7
2012-05-13s3:lib:dbwrap: use [u]int[num]_t consistently in dbwrap_util.cMichael Adam1-9/+9
2012-05-13s3:dbwrap: move definition of dbwrap_lock_order to dbwrap.hMichael Adam4-8/+7
This is needed in all of the library, not only in the dbwrap_open part.
2012-04-24s3: Fix Coverity ID 2751: REVERSE_INULLVolker Lendecke1-1/+1
2012-04-23s3-dbwrap: A void function can not return a valueAndrew Bartlett1-1/+1
Only non-gcc compilers seem to notice this as an error. Andrew Bartlett Autobuild-User: Andrew Bartlett <abartlet@samba.org> Autobuild-Date: Mon Apr 23 05:58:52 CEST 2012 on sn-devel-104
2012-04-21s3: Implement db_id for dbwrap_cacheVolker Lendecke1-0/+9
Autobuild-User: Volker Lendecke <vl@samba.org> Autobuild-Date: Sat Apr 21 13:46:00 CEST 2012 on sn-devel-104
2012-04-21s3: Initialize "stored_callback" in dbwrap_cacheVolker Lendecke1-0/+1
This should fix one of the recent flaky tests
2012-04-20s3-dbwrap: dbwrap_watch_record_stored => NT_STATUS_NOT_FOUND is ok...Stefan Metzmacher1-0/+3
Autobuild-User: Volker Lendecke <vl@samba.org> Autobuild-Date: Fri Apr 20 17:05:52 CEST 2012 on sn-devel-104
2012-04-19s3-dbwrap: Add dbwrap_record_watch_send/recvVolker Lendecke2-0/+529
With this API you can asynchronously wait for a record to be modified
2012-04-20s3-dbwrap: Add dbwrap_set_stored_callbackVolker Lendecke6-2/+47
This is a per-db function that is called whenever some record is modified
2012-04-20s3-dbwrap: Add "db_context" to "db_record"Volker Lendecke4-0/+10
2012-04-20s3-dbwrap: Add dbwrap_db_idVolker Lendecke6-0/+50
This returns a blob uniquely identifying the database
2012-04-19s3: Fix Coverity ID 2744: CHECKED_RETURNVolker Lendecke1-1/+6
2012-04-19s3: Fix Coverity ID 2745 and 2746: FORWARD_NULLVolker Lendecke1-11/+15
We can assume that the rbt dbs are around
2012-04-19s3-dbwrap: Remove dead code: talloc_stackframe() cannot failAndrew Bartlett1-10/+1
2012-04-18s3-dbwrap: Fix an unused var warningVolker Lendecke1-0/+2
2012-04-18s3-dbwrap: push lp_ctx up another layer in the stackAndrew Bartlett3-5/+6
This will allow db_open_tdb() to be called from common code, which may already have a loadparm context loaded. It also slowly moves the lp_ctx up the stack, as required to remove the library loop between smbconf and the registry. Andrew Bartlett
2012-04-18s3-dbwrap: Add talloc_stackframe() callsAndrew Bartlett1-5/+21
This is in preperation for calling dbwrap from common code, where we may not have a stackframe set up. Andrew Bartlett
2012-04-17s3: Add dbwrap_try_fetch_lockedVolker Lendecke8-16/+97
This is designed to spread the load on individual ctdb records to allow upper layers to do backoff mechanisms. In the ctdb case, do not get the record if a local lock is already taken. If we are not dmaster, do at most one migrate attempt. For the tdb case, this is a nonblocking fetch_locked. If someone else has the lock, give up.
2012-04-17s3: Add dbwrap_cacheVolker Lendecke2-0/+242
This is a caching layer for the notify database and potentially for the brlock database. It caches the parse_record operation as long as the underlying seqnum does not change.
2012-04-17s3: Open up 3 levels of dbwrap_lock_orderVolker Lendecke2-5/+9
2012-04-17s3: Return CTDB_PATH from lp_ctdbd_socket()Volker Lendecke1-8/+0
All callers had that fallback
2012-04-07s3: Compile fix for dbwrap_file.cVolker Lendecke1-1/+1
Autobuild-User: Volker Lendecke <vl@samba.org> Autobuild-Date: Sat Apr 7 14:10:35 CEST 2012 on sn-devel-104
2012-04-05build: Remove sys_lseek wrapperAndrew Bartlett1-2/+2
2012-04-05build: Remove sys_ftruncate wrapperAndrew Bartlett1-2/+2
2012-04-03s3: Enhance the dbwrap needed x attempts msgVolker Lendecke1-1/+5
Autobuild-User: Volker Lendecke <vl@samba.org> Autobuild-Date: Tue Apr 3 15:17:11 CEST 2012 on sn-devel-104
2012-03-30s3: Avoid a crash with debug level 10Volker Lendecke1-1/+2
Autobuild-User: Volker Lendecke <vl@samba.org> Autobuild-Date: Fri Mar 30 16:52:16 CEST 2012 on sn-devel-104
2012-03-16s3-dbwrap: Move "lock_order" initialization to db_open_xxVolker Lendecke4-6/+8
2012-03-10tdb_wrap: Move to specific directory.Jelmer Vernooij2-2/+2
It's a bit confusing to mix low-level and high-level libraries. We had multiple libraries in one directory, and there were have circular dependencies with other libraries outside that directory (in this case, samba-hostconfig). Autobuild-User: Jelmer Vernooij <jelmer@samba.org> Autobuild-Date: Sat Mar 10 23:13:01 CET 2012 on sn-devel-104
2012-03-05s3-ctdb: Enable CTDB readonly support only if CTDB supports itAmitay Isaacs1-0/+4
Autobuild-User: Amitay Isaacs <amitay@samba.org> Autobuild-Date: Mon Mar 5 02:47:36 CET 2012 on sn-devel-104
2012-03-05dbwrap_ctdb: only fetch a read-only copy if we had a record already.Rusty Russell1-2/+7
Because revoking read-only copies of records is expensive, we only want ctdbd to do it for high-turnover records. A basic heuristic is that if we don't find a local copy of the record, don't ask for a read-only copy. The fetch itself will cause ctdbd to migrate the record, so eventually we will have a local copy. Next time it gets migrated away, we'll call ctdbd_fetch() with local_copy = true. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2012-03-05dbwrap_ctdb: handle read-only records.Rusty Russell1-9/+26
The new read-only record flags make determining if we can use a record a bit more complex, so extract it into its own function. The OLD logic was: 1) If the record doesn't exist, we can't use it. 2) If we are the dmaster for the record, we can use it. The new logic is: 1) If the record doesn't exist, we can't use it. 2) If we are the dmaster for the record, we can use it IF we only want read-only access, OR there are no read-only delegations. 3) If we are not dmaster, we can only use it if we want read-only access and it is marked as a read-only copy. This logic is unused until the next patches which begin to ask for read-only copies of records. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2012-02-27dbwrap: changed log level for information about lock orderAndrew Tridgell1-1/+1
we were filling our logs with lock ordering debug lines Pair-Programmed-With: Andrew Bartlett <abartlet@samba.org> Autobuild-User: Andrew Bartlett <abartlet@samba.org> Autobuild-Date: Mon Feb 27 12:50:29 CET 2012 on sn-devel-104
2012-01-18s3: Use lock_order for setting the db priorityVolker Lendecke1-0/+18
Autobuild-User: Volker Lendecke <vlendec@samba.org> Autobuild-Date: Wed Jan 18 16:21:52 CET 2012 on sn-devel-104
2012-01-18s3: Pass down lock_order to db_open_ctdbVolker Lendecke3-4/+10
2012-01-18s3: Enforce a lock order in dbwrapVolker Lendecke4-1/+85
This makes sure we do not deadlock from doing two dbwrap_fetch_locked in two processes in different orders. At open time, we assign a strict order to all databases. lock_order 1 will be locked first, lock_order 2 second. No two records of the same lock order may be locked at the same time.
2012-01-18s3: Add a "lock_order" argument to db_openVolker Lendecke3-3/+26
This will be used to enforce a lock hierarchy between the databases. We have seen deadlocks between locking.tdb, brlock.tdb, serverid.tdb and notify*.tdb. These should be fixed by refusing a dbwrap_fetch_locked that does not follow a defined lock hierarchy.
2012-01-05s3: Fix some nonempty blank linesVolker Lendecke1-3/+3
2011-12-16s3:dbwrap fix return value of db_tdb_parseChristian Ambach1-1/+5
use the TDB ecode to determine the NTSTATUS return value and not the return code that is just -1
2011-12-15s3-dbwrap: All relevant backends provide parse_record(). Remove the fallback.Volker Lendecke1-37/+0
Signed-off-by: Michael Adam <obnox@samba.org> Autobuild-User: Michael Adam <obnox@samba.org> Autobuild-Date: Thu Dec 15 17:41:53 CET 2011 on sn-devel-104
2011-12-15s3-dbwrap: Remove the "fetch" db_context callbackVolker Lendecke5-113/+0
Signed-off-by: Michael Adam <obnox@samba.org>
2011-12-15s3-dbwrap: Rewrite dbwrap_fetch in terms of dbwrap_parse_recordVolker Lendecke1-3/+30
Signed-off-by: Michael Adam <obnox@samba.org>
2011-12-15s3-dbwrap: Rewrite dbwrap_fallback_parse_record based on dbwrap_fetch_lockedVolker Lendecke1-4/+13
This is in preparation to remove the db_context->fetch function pointer Signed-off-by: Michael Adam <obnox@samba.org>
2011-12-15s3-dbwrap: For nostalgic reasons, make dbwrap_file.c compile at leastVolker Lendecke1-9/+14
Signed-off-by: Michael Adam <obnox@samba.org>
2011-12-15s3-dbwrap: Fix some blank line endingsVolker Lendecke1-5/+5
Signed-off-by: Michael Adam <obnox@samba.org>
2011-12-15s3-dbwrap: Implement db_ctdb_parse_record in terms of db_ctdb_fetchVolker Lendecke1-0/+19
Signed-off-by: Michael Adam <obnox@samba.org>
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