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Autobuild-User: Michael Adam <obnox@samba.org>
Autobuild-Date: Mon May 7 16:11:05 CEST 2012 on sn-devel-104
It simply calls to the regdb functions.
This fixes a caching issue uncovered by recent changes.
Autobuild-User: Michael Adam <obnox@samba.org>
Autobuild-Date: Sat May 5 04:10:43 CEST 2012 on sn-devel-104
This prevents race between fetching seqnum and key content.
Because there is currently no way to atomically fetch the
record along with the seqnum, I use a loop.
This is far from optimal and should should ideally be done
differently. But for now it fixes the race.
Signed-off-by: Andreas Schneider <asn@samba.org>
This prevents race between fetching seqnum and key content.
Because there is currently no way to atomically fetch the
record along with the seqnum, I use a loop.
This is far from optimal and should should ideally be done
differently. But for now it fixes the race.
Signed-off-by: Andreas Schneider <asn@samba.org>
The purpose is to prevent next reads from going to disk.
Note that this will currently only be effective with local tdbs, not
with ctdb: For tdb, store and delete bump the seqnum while transaction
commit does not. For ctdb, transaction commit bumps the seqnum, while
store and delete don't... This needs fixing (in ctdb).
Signed-off-by: Andreas Schneider <asn@samba.org>
Note that this will currently only be effective in the local TDB implementation.
For CTDB, this wont work since seqnum currently works differently there (needs
fixing): For tdb, store and delete operations bump the db seqnum, while
transaction commits don't. For ctdb, the seqnum is bumped by the transaction
commit but not by store and delete operations.
Signed-off-by: Andreas Schneider <asn@samba.org>
This is wrong layering (calling into regdb_transaction* in the reg_api code)
but fixes a potential race. It makes the multi-step create procedure atomic.
This should completely be done in the backend.
Signed-off-by: Andreas Schneider <asn@samba.org>
This is at the wrong layer, but if fixes a race potentially causing
data corruption by concurrent access.
Signed-off-by: Andreas Schneider <asn@samba.org>
(there was no lock around fetching the values and storing them)
The layering is wrong in that it uses regdb transactions in reg_api
Signed-off-by: Andreas Schneider <asn@samba.org>
This is like regval_ctr_key_exists() but does not return bool,
but the regval_blob instead, if found, and NULL if not found.
Signed-off-by: Andreas Schneider <asn@samba.org>
Signed-off-by: Jeremy Allison <jra@samba.org>
Autobuild-User: Jeremy Allison <jra@samba.org>
Autobuild-Date: Fri Apr 13 02:23:36 CEST 2012 on sn-devel-104
Signed-off-by: Michael Adam <obnox@samba.org>
Autobuild-User: Michael Adam <obnox@samba.org>
Autobuild-Date: Tue Jan 24 13:54:09 CET 2012 on sn-devel-104
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.
As reported by Ismail Doenmez (idonmez@suse.com), sizeof() is
incorrectly used by _reg_perfcount_init_data_block() in an attempt to
determine the length of a talloced array.
Signed-off-by: Günther Deschner <gd@samba.org>
Autobuild-User: Günther Deschner <gd@samba.org>
Autobuild-Date: Wed Jan 4 16:54:37 CET 2012 on sn-devel-104
Signed-off-by: Michael Adam <obnox@samba.org>
Autobuild-User: Michael Adam <obnox@samba.org>
Autobuild-Date: Sat Dec 3 05:20:30 CET 2011 on sn-devel-104
It is importante to not use the database backend implementation
in the upgrade. Otherwise this would only work as long as this
is the newset version. In future versions of the registry, this
(then) intermediate upgrade step would change in behaviour and not
work as expected any more.
Signed-off-by: Michael Adam <obnox@samba.org>
Skip the transaction for the upgrade code, if the database
is already at code-level.
Autobuild-User: Michael Adam <obnox@samba.org>
Autobuild-Date: Wed Nov 9 15:06:59 CET 2011 on sn-devel-104
Originally, this function did not create the key's subkey list record if only
the record was listed in the subkeylist of its parent key. Now this is fixed.
Pair-Programmed-With: Gregor Beck <gbeck@sernet.de>
Return the int32 value retrieved from the db by reference.
Before this, return value "-1" was used as a error indication,
but it could also be a valid value from the database.
1. catch data blobs with odd number of bytes (not an ucs2 string at all)
2. test the right ucs2 character to be 0
(prevent out-of bounds access/potential segfault)
Autobuild-User: Michael Adam <obnox@samba.org>
Autobuild-Date: Sun Oct 2 01:26:05 CEST 2011 on sn-devel-104
This also fixes broken private_data parameter for the traverse function
(making use of it): Originally a memory context was handed in but was not used.
More precisley, we return false if the record does not match the required
structure of a leading 4-byte subkey counter followed by the corresponding
number zero-terminated strings.
reg_deletekey_recursive
this changes the complexity from O(n^2) to O(n) and reduces the time of
a 'net conf drop' with 10000 shares from 6min to 1.5s
Signed-off-by: Michael Adam <obnox@samba.org>
Also start new folder lib/dbwrap/ where dbwrap_open.c is stored and
make the fallbacke implementation functoins non-static and create a
dbwrap_private.h header file that contains their prototypes.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Autobuild-User: Stefan Metzmacher <metze@samba.org>
Autobuild-Date: Fri Jul 15 08:34:47 CEST 2011 on sn-devel-104
