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Signed-off-by: Timur I. Bakeyev <timur@iXsystems.com>
Reviewed-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Martin Schwenke <martin@meltin.net>
Autobuild-User(master): Ralph Böhme <slow@samba.org>
Autobuild-Date(master): Wed May 16 21:29:24 CEST 2018 on sn-devel-144
With a proper implementation this enables modifications without
having to allocate a record. In really performance sensitive code
paths this matters.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
This will allow dbwrap_do_locked to check the order without talloc
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Convert all implementors of dbwrap_store to a storev-style call
by using the dbwrap_merge_dbufs call
For dbwrap_tdb, this matches tdb_storev.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
This has stopped working ages ago. The idea is clear, but if someone
wants to revive it, I think it needs a completely fresh start.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
The req_state parameter tells the caller whether the async request is
blocked in a full send queue:
req_state >= DBWRAP_REQ_DISPATCHED := request is dispatched
req_state < DBWRAP_REQ_DISPATCHED := send queue is full
This is useful in a clustered Samba environment where the async dbwrap
request is sent over a socket to the local ctdbd.
If the send queue is full and the caller was issuing multiple async
dbwrap requests in a loop, the caller knows it's probably time to stop
sending requests for now and try again later.
This will be used in subsequent commits in
smbd_smb2_query_directory_send() when implementing async write time
updates. Directories may contain umpteen files so we send many requests
to ctdb without going through tevent and reading the responses which has
the potential to deadlock.
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
This will be used by async dwrap_parse_send() as an out argument, giving
the caller an indication about the state of the request.
This is can be useful for the caller if it is a sync function and sends
multiple async dbwrap requests. As it's a sync function it won't return
to the main tevent event loop and so the async dbwrap recv function are
not called.
As a result the function may deadlock: our receive queue may already be
full with results from a peer, the peer might be blocked in his send
queue (because we're not receiving), the peer therefor doesn't read from
his receive queue so our send queue will block as well.
To inform the caller of this situation "send queue full" we return this
state information to the caller of the dbwrap send function.
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
This is not found by modern compilers, but prevents the -Werror -O3 build on Ubuntu 10.04
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Wed Jun 8 08:48:57 CEST 2016 on sn-devel-144
Variants of dbrwap_delete[_bysrting] that treats NOT FOUND
as success.
Signed-off-by: Michael Adam <obnox@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Signed-off-by: Uri Simchoni <uri@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Wed Jan 27 00:09:05 CET 2016 on sn-devel-144
This is necessary because it has public headers.
Signed-off-by: Jelmer Vernooij <jelmer@jelmer.uk>
Reviewed-By: Andrew Bartlett <abartlet@samba.org>
Reviewed-By: Stefan Metzmacher <metze@samba.org>
Autobuild-User(master): Jelmer Vernooij <jelmer@samba.org>
Autobuild-Date(master): Wed Jan 13 07:47:04 CET 2016 on sn-devel-144
We delete and add of records rebalace the tree, but our
traverse code doesn't handle that and skips records
randomly.
We maintain records in a linked list for now
in addition to the rbtree and use that list during
traverse.
This add a bit overhead, but at least it works reliable.
If someone finds a way to do reliable traverse with the
rebalanced tree, we can replace this commit.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11375
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11394
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Multiple dbwrap_traverse_read() calls are possible.
store() and delete() on a fetch locked record
are rejected during dbwrap_traverse_read().
A dbwrap_traverse() within a dbwrap_traverse_read()
behaves like a dbwrap_traverse_read().
Nested dbwrap_traverse() calls are not possible.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11375
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11394
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Autobuild-User(master): Ralph Böhme <slow@samba.org>
Autobuild-Date(master): Mon Nov 23 15:16:19 CET 2015 on sn-devel-104
We want to know (by crashing) when we free the database with records still
around. This would be a serious violation of our data structure hierarchies.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Reported by Uri Simchoni <urisimchoni@gmail.com>. Thanks!
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Autobuild-User(master): Ralph Böhme <slow@samba.org>
Autobuild-Date(master): Mon Jul 20 23:18:23 CEST 2015 on sn-devel-104
Signed-off-by: David Disseldorp <ddiss@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Autobuild-User(master): David Disseldorp <ddiss@samba.org>
Autobuild-Date(master): Thu Feb 26 13:49:05 CET 2015 on sn-devel-104
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ira Cooper <ira@samba.org>
Autobuild-User(master): Volker Lendecke <vl@samba.org>
Autobuild-Date(master): Mon Nov 24 18:36:00 CET 2014 on sn-devel-104
