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* Remove remaining, but broken python2 support
* Spelling fixes
* python: Safely clear structure members
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
* Fix build problems
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15071
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Autobuild-User(master): Andreas Schneider <asn@cryptomilk.org>
Autobuild-Date(master): Wed Jun 8 17:57:53 UTC 2022 on sn-devel-184
* Upgrade waf to version 2.0.18 to fix a cross-compilation issue.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13846
Signed-off-by: Uri Simchoni <uri@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
* Build fixes
* Improve the performance by inlining the tdb_oob() checks
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Tue Aug 20 14:45:41 UTC 2019 on sn-devel-184
* Do not propogate any errors from tdb_repack() to to tdb_transaction_commit()
The repack may fail due to lock ordering or memory limits, but the original data has
been written so the call must succeed. (bug 13952)
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): Fri May 17 08:21:52 UTC 2019 on sn-devel-184
* Remove Python 2.x support except to build just the bare C library
* Remove --extra-python (a build time mode to produce Python2 and Python3
bindings at the same time)
* New minor version to allow Samba 4.10 to release a tdb if
required from that branch
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
* Fix build on AIX
* Python3 compatibility fixes
* Use tdb_wipe_all in "erase" command
* Harden allocating the tdb recovery area
* Make sure the hash size fits
* Harden tdb_check_used_record against overflow
* Harden tdb_rec_read
* Handle TDB_NEXT_LOCK_ERR in tdb_traverse_internal
* Fix build warnings
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
* Add protection against EINTR.
* Truncate the file after expand failure, ENOSPC
* Use posix_fallocate() to expand the file
* Fix GCC compiler warnings
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Thu Aug 24 21:17:48 CEST 2017 on sn-devel-144
* allow tdb_traverse_read before tdb_transaction[_prepare]_commit()
* Improve documentation for tdb_transaction_start()
* Add new function tdb_transaction_active()
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
* Bug 12455 - tdb mutexes don't work on FreeBSD
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Wed Nov 30 20:02:28 CET 2016 on sn-devel-144
* avoid a race condition when checking for robust mutexes
(bug #11808)
* Remove use of strcpy in tdb test.
* eliminate deprecation warnings in python tests
* Only set public headers field when installing as a public library.
* Refuse to load a database with hash size 0
* Fix various spelling errors
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Autobuild-User(master): Ralph Böhme <slow@samba.org>
Autobuild-Date(master): Mon Apr 11 18:48:26 CEST 2016 on sn-devel-144
* first fix deadlock in the interaction between fcntl and mutex locking
(bug #11381)
* improved python3 bindings
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
* Fix runtime detection for robust mutexes in the standalone build.
bug #11326
* Possible fix for the build with robust mutexes on solaris 11
bug #11319
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Fri Jun 12 19:55:34 CEST 2015 on sn-devel-104
ABI change: tdb_chainlock_read_nonblock() has been added.
Signed-off-by: Alexander Drozdov <al.drozdov@gmail.com>
Reviewed-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Wed Apr 29 00:05:29 CEST 2015 on sn-devel-104
Transactions are supported with TDB_MUTEX_LOCKING.
This fixes https://bugzilla.samba.org/show_bug.cgi?id=11004
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Autobuild-User(master): Amitay Isaacs <amitay@samba.org>
Autobuild-Date(master): Fri Dec 19 11:41:26 CET 2014 on sn-devel-104
This fixes the tdb1-run-mutex-openflags2 test when robust mutexes are available.
Bug: https://bugzilla.samba.org/show_bug.cgi?id=10781
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Tue Dec 2 11:54:28 CET 2014 on sn-devel-104
* internal code cleanup
* improved free record detection with a highly contended freelist
on tdb's with dead record support (TDB_VOLATILE).
* implicit defragmentation of the free list.
Signed-off-by: Michael Adam <obnox@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Tue Sep 16 12:13:31 CEST 2014 on sn-devel-104
This adds optional support for locking based on
shared robust mutexes.
The caller can use the TDB_MUTEX_LOCKING flag
together with TDB_CLEAR_IF_FIRST after verifying
with tdb_runtime_check_for_robust_mutexes() that
it's supported by the current system.
The caller should be aware that using TDB_MUTEX_LOCKING
implies some limitations, e.g. it's not possible to
have multiple read chainlocks on a given hash chain
from multiple processes.
Note: that this doesn't make tdb thread safe!
Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>
Pair-Programmed-With: Michael Adam <obnox@samba.org>
Signed-off-by: Volker Lendecke <vl@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Michael Adam <obnox@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
* internal code cleanups
* always open internal TDBs with incompatible hash
* avoid reallocations in locking code
* systematize output format in tdbtool dump
* reduce freelist contention when allocating new records
- try to find dead records also in other chains
- don't do blocking locks on the freelist
Signed-off-by: Michael Adam <obnox@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Autobuild-User(master): Michael Adam <obnox@samba.org>
Autobuild-Date(master): Tue Mar 18 15:42:48 CET 2014 on sn-devel-104
* internal code cleanups
* crash fix for pytdb
* fix for 4GB overflow detection
See http://permalink.gmane.org/gmane.network.samba.internals/42906 for
an example of what happens.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Tue Jun 4 16:07:55 CEST 2013 on sn-devel-104
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Autobuild-User: Rusty Russell <rusty@rustcorp.com.au>
Autobuild-Date: Thu Mar 29 13:12:46 CEST 2012 on sn-devel-104
This is a better hash than the default: shipping it with tdb makes it easy
for callers to use it as the hash by passing it to tdb_open_ex().
This version taken from CCAN and modified, which took it from
http://www.burtleburtle.net/bob/c/lookup3.c.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We saw tdb_lockall() take 71 seconds under heavy load; this is because Linux
(at least) doesn't prevent new small locks being obtained while we're waiting
for a big log.
The workaround is to do divide and conquer using non-blocking chainlocks: if
we get down to a single chain we block. Using a simple test program where
children did "hold lock for 100ms, sleep for 1 second" the time to do
tdb_lockall() dropped signifiantly. There are ln(hashsize) locks taken in
the contended case, but that's slow anyway.
More analysis is given in my blog at http://rusty.ozlabs.org/?p=120
This may also help transactions, though in that case it's the initial
read lock which uses this gradual locking routine; the update-to-write-lock
code is separate and still tries to update in one go.
Even though ABI doesn't change, minor version bumped so behavior change
can be easily detected.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
