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When a process holds a readlock and wants to upgrade, this needs to be
reflected in the underlying lock. Without this, it is possible to cheat:
One process holds a readlock, and another process wants to write this
record. All the writer has to do is take a readonly lock on the key and
then do the store.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Drop the configure option for --disable-python as it is now
global in wafsamba.
If samba is set to use a system copy of tdb, and tdb wasn't built
with python support, then the system pytevent will not be found. If
samba is being built without python support then pytdb is not needed,
so do not bother to try and find it.
Signed-off-by: Ian Stakenvicius <axs@gentoo.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
* 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
susv4 on mmap has the following snippet:
> The state of synchronization objects such as mutexes, semaphores,
> barriers, and conditional variables placed in shared memory mapped
> with MAP_SHARED becomes undefined when the last region in any process
> containing the synchronization object is unmapped.
This means we can't keep the mutex mmap area unmapped at any point
in time.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12455
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Tue Nov 29 23:59:52 CET 2016 on sn-devel-144
This gains a few percent in tdbbackup
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
Autobuild-User(master): Volker Lendecke <vl@samba.org>
Autobuild-Date(master): Fri Jul 15 00:52:00 CEST 2016 on sn-devel-144
Signed-off-by: Bob Campbell <bobcampbell@catalyst.net.nz>
Signed-off-by: Garming Sam <garming@catalyst.net.nz>
Pair-programmed-with: Garming Sam <garming@catalyst.net.nz>
Reviewed-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Sun Jul 3 18:11:30 CEST 2016 on sn-devel-144
This comes via a "goto cleanup" before suspend_mask is initialized
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Uri Simchoni <uri@samba.org>
Autobuild-User(master): Uri Simchoni <uri@samba.org>
Autobuild-Date(master): Tue Apr 12 11:39:35 CEST 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
The cleanup logic used six goto lables, at least I'm not able to make
sane modifications to such a beast.
By using state flags that track which objects are initialized and need
cleanup, we get rid of the goto labels. It comes at a cost though: you
have to be careful to correctly set the cleanup flags.
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Uri Simchoni <uri@samba.org>
This fixes a race between calling waitpid() in two places (SIGCHLD the
signal handler and the rendezvous code when waiting for the child to
terminate), by
- blocking SIGCHLD before installing our signal handler
- in the rendezvous code call sigssuspend() which unblocks SIGCHLD and
suspends the thread and waits for signal delivery
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11808
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Uri Simchoni <uri@samba.org>
Autobuild-User(master): Ralph Böhme <slow@samba.org>
Autobuild-Date(master): Tue Mar 29 16:04:19 CEST 2016 on sn-devel-144
assertEquals() is superseded by assertEqual()
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 Feb 16 19:58:39 CET 2016 on sn-devel-144
This just ensures we reject (rather than div-by-0) a corrupt
DB with a zero hash size.
Found with american fuzzy lop
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 Dec 18 08:26:25 CET 2015 on sn-devel-144
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Fri Nov 6 13:43:45 CET 2015 on sn-devel-104
This reverts commit ea53e86c25.
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Autobuild-User(master): Ralph Böhme <slow@samba.org>
Autobuild-Date(master): Fri Sep 18 14:03:12 CEST 2015 on sn-devel-104
The reverse of tdbdump
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Fri Sep 18 03:04:35 CEST 2015 on sn-devel-104
With --disable-python, we should not install any python files.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Autobuild-User(master): Amitay Isaacs <amitay@samba.org>
Autobuild-Date(master): Thu Jul 23 18:50:25 CEST 2015 on sn-devel-104
* 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>
This change makes tdb dicts more consistent with Python dicts.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=7416
Signed-off-by: Aurelien Aptel <aaptel@suse.com>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
- Remove has_key() method, add a fast "in" operator
- Rename iterkeys() to keys()
Signed-off-by: Petr Viktorin <pviktori@redhat.com>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
- Use bytes for all data, text strings for repr()
- Use PyLong instead of PyInt on py3
- Use new module initialization
- Update tests
- Run tests in "make test"
Signed-off-by: Petr Viktorin <pviktori@redhat.com>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
nextkey() was defined to take no arguments but expected one.
Signed-off-by: Petr Viktorin <pviktori@redhat.com>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
config.h may have some flags which affect glibc behavior, e.g.
_FILE_OFFSET_BITS=64. To make sure these flags have the desired
effect, config.h must be included before any glibc header files.
This commit does not fix a specific known bug. It changes the code to
comply with coding conventions.
Signed-off-by: Uri Simchoni <urisimchoni@gmail.com>
Reviewed-by: Jeremy Allison <jra@samba.org>
Reviewed-by: "Stefan Metzmacher" <metze@samba.org>
This fixes a deadlock in tdb that is a bad interaction between tdb_lockall
and tdb_traverse. This deadlock condition has been around even before
tdb mutexes, it's just that the kernel fcntl EDEADLK detection protected
us from this ABBA lock condition to become a real deadlock stalling
processes. With tdb mutexes, this deadlock protection is gone, so we do
lock dead.
This patch glosses over this particular ABBA condition, making tdb with
mutexes behave the same as tdb without mutexes. Admittedly this is no
real fix, but it works around a real user's problem.
Bug: https://bugzilla.samba.org/show_bug.cgi?id=11381
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@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
