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Use our newly-generic nested lock tracking for the active lock.
Note that the tdb_have_extra_locks() and tdb_release_extra_locks()
functions have to skip over this lock now it is tracked.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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This never nests, so it's overkill, but it centralizes the locking into
lock.c and removes the ugly flag in the transaction code to track whether
we have the lock or not.
Note that we have a temporary hack so this places a real lock, despite
the fact that we are in a transaction.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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Rather than a boutique lock and a separate nest count, use our
newly-generic nested lock tracking for the transaction lock.
Note that the tdb_have_extra_locks() and tdb_release_extra_locks()
functions have to skip over this lock now it is tracked.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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Factor out two loops which find locks; we are going to introduce a couple
more so a helper makes sense.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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Move locking intelligence back into lock.c, rather than open-coding the
lock release in transaction.c.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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In many places we check whether locks are held: add a helper to do this.
The _tdb_lockall() case has already checked for the allrecord lock, so
the extra work done by tdb_have_extra_locks() is merely redundant.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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tdb_transaction_lock() and tdb_transaction_unlock() do nothing if we
hold the allrecord lock. However, the two locks don't overlap, so
this is wrong.
This simplification makes the transaction lock a straight-forward nested
lock.
There are two callers for these functions:
1) The transaction code, which already makes sure the allrecord_lock
isn't held.
2) The traverse code, which wants to stop transactions whether it has the
allrecord lock or not. There have been deadlocks here before, however
this should not bring them back (I hope!)
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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Because fcntl locks don't nest, we track them in the tdb->lockrecs array
and only place/release them when the count goes to 1/0. We only do this
for record locks, so we simply place the list number (or -1 for the free
list) in the structure.
To generalize this:
1) Put the offset rather than list number in struct tdb_lock_type.
2) Rename _tdb_lock() to tdb_nest_lock, make it non-static and move the
allrecord check out to the callers (except the mark case which doesn't
care).
3) Rename _tdb_unlock() to tdb_nest_unlock(), make it non-static and
move the allrecord out to the callers (except mark again).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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The word global is overloaded in tdb. The global_lock inside struct
tdb_context is used to indicate we hold a lock across all the chains.
Rename it to allrecord_lock.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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The word global is overloaded in tdb. The GLOBAL_LOCK offset is used at
open time to serialize initialization (and by the transaction code to block
open).
Rename it to OPEN_LOCK.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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Now tdb_open() calls tdb_transaction_cancel() instead of
_tdb_transaction_cancel, we can make it static.
Signed-off-by: Rusty Russell<rusty@rustcorp.com.au>
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This is taken from the CCAN code base: rather than using tdb_brlock for
locking and unlocking, we split it into brlock and brunlock functions.
For extra debugging information, brunlock says what kind of lock it is
unlocking (even though fnctl locks don't need this). This requires an
extra argument to tdb_transaction_unlock() so we know whether the
lock was upgraded to a write lock or not.
We also use a "flags" argument tdb_brlock:
1) TDB_LOCK_NOWAIT replaces lck_type = F_SETLK (vs F_SETLKW).
2) TDB_LOCK_MARK_ONLY replaces setting TDB_MARK_LOCK bit in ltype.
3) TDB_LOCK_PROBE replaces the "probe" argument.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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msDS-IntId attribute should be replicated, so it must be
implemented in a module that is before repl_meta_data module
(thanks abartlet for pointing this out).
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
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These tests server behavior when a client compounds both synchronous
and asynchronous requests.
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After looking at the s4 side of the (s)channel :) I found out that it makes
more sense to simply make it use the tdb based code than redo the same changes
done to s3 to simplify the interface.
Ldb is slow, to the point it needs haks to pre-open the db to speed it up, yet
that does not solve the lookup speed, with ldb it is always going to be slower.
Looking through the history it is evident that the schannel database doesn't
really need greate expanadability. And lookups are always done with a single
Key. This seem a perfet fit for tdb while ldb looks unnecessarily complicated.
The schannel database is not really a persistent one. It can be discared during
an upgrade without causing any real issue. all it contains is temproary session
data.
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Make calling schannel much easier by removing the need to explicitly open the
database. Let the abstraction do it instead.
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passing mem_ctx was causing creds->sid to be allocated on mem_ctx and not be
child of creds as expected. When later in schannel_check_creds_state() we
stole the creds on a different memory context the sid was left behind and the
memory it points to freed when the temporary context was freed.
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One almost empty header file was simply including another not included by
anything else. Just merge them together.
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Make the initial schannel check logic more understandable.
Make it easy to define different policies depending on the caller's
security requirements (Integrity/Privacy/Both/None)
This is the same change applied to s3
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Make the initial schannel check logic more understandable.
Make it easy to define different policies depending on ther caller's security
requirements (Integrity/Privacy/Both/None)
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Guenther
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Guenther
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Guenther
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Guenther
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metze
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This should fix the rpccli_netlogon_set_trust_password() against DC's
without netr_ServerPasswordSet2 support.
This fixes bug #7160.
metze
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metze
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This allows a python script to query the internal network interface
lists from Samba
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This periodically calls samba_dnsupdate to update our DNS entries if
needed
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defaults to SBINDIR/samba_dnsupdate
This command will do periodic dynamic DNS updates using TSIG-GSS
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AC_SIGNAL_TYPE is already obsolete in autoconf. C89 requires signal
handlers to return void, only K&R returned int.
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AC_SIGNAL_TYPE is already obsolete in autoconf. C89 requires signal
handlers to return void, only K&R returned int.
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