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branch, please check if it fulfils your needs.
Two changes: The validation is not done inside the brlock.c traverse_fn,
it's done as a separate routine.
Secondly, this patch does not call the checker routines in smbcontrol
directly but depends on a running smbd.
(This used to be commit 7e39d77c1f90d9025cab08918385d140e20ca25b)
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(This used to be commit 80a1f43825063bbbda896175d99700ede5a4757a)
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This removes message_block / message_unblock. I've talked to Jeremy and
Günther, giving them my reasons why I believe they have no effect.
Neither could come up with a counter-argument, so they go :-)
(This used to be commit a925e0991ffbaea4a533bab3a5d61e5d367d46c8)
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is now
replaced by MSG_FLAG_LOWPRIORITY or'ed into the msg_type. To enable this,
changed the msg_type definitions to hexadecimal.
This way we could theoretically add the MSG_FLAG_NODUPLICATES again, but I
would rather not do this, because that one is racy and can't be guaranteed at
all.
(This used to be commit 3f5eb8a9600839a9f9c44c553f0bda6df22b30b0)
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(This used to be commit 72ed8388252bed07627b3a4636744dc8acf1c98b)
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doing this because for the clustering the marshalling is needed in more
than one place, so I wanted a decent routine to marshall a message_rec
struct which was not there before.
Tridge, this seems about the same speed as it used to be before, the
librpc/ndr overhead in my tests was under the noise.
Volker
(This used to be commit eaefd00563173dfabb7716c5695ac0a2f7139bb6)
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message_send_pid is used anymore. Two users of duplicates_allowed: winbind and
the printer notify system.
I don't thing this really changes semantics: duplicates_allowed is hell racy
anyway, we can't guarantee that we don't send the same message in sequence
twice, and I think the only thing we can harm with the print notify is
performance.
For winbind I talked to Günther, and he did not seem too worried.
Volker
(This used to be commit 75b3ae6a761c33ae6a70799340a1e8c1edea265e)
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replaces
the timeouts on the individual message send calls with an overall timeout on
all the calls.
The timeout in message_send_pid_with_timeout() did not make much sense IMO
anyway, because the tdb_fetch() for the messages_pending_for_pid was blocking
in a readlock anyway, we "just" did the timeout for the write lock.
This new code goes through the full wait for the write lock once and then
breaks out of sending the notifies instead of running into the timeout per
target.
Jerry, please check this!
Thanks,
Volker
(This used to be commit 697099f06e1aa432187f802b9c2632607e3de46e)
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tomorrow.
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locking/locking.c we have to send retry messages to timed lock holders.
The majority of this patch passes a "struct messaging_context" down
there. No functional change, survives make test.
(This used to be commit bbb508414683eeddd2ee0d2d36fe620118180bbb)
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connections_traverse
and connections_forall. This centralizes all the routines that did individual
tdb_open("connections.tdb") and direct tdb_traverse.
Volker
(This used to be commit e43e94cda1ad8876b3cb5d1129080b57fa6ec214)
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patch.
This changes "struct process_id" to "struct server_id", keeping both is
just too much hassle. No functional change (I hope ;-))
Volker
(This used to be commit 0ad4b1226c9d91b72136310d3bbb640d2c5d67b8)
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Jeremy.
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messages.c. Refactor to use become_root() instead and
make it local to messages.c
Jeremy.
(This used to be commit f3ffb3f98472b69b476b702dfe5c0575b32da018)
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and fix all compiler warnings in the users
metze
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(This used to be commit f3421ae4cfa263c0e7a8e934b40342ee9885d239)
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crashed. So
it needs the specific error message.
Make messages.c return NTSTATUS and specificially NT_STATUS_INVALID_HANDLE if
sending to a non-existent process.
Volker
(This used to be commit 3f620d181da0c356c8ffbdb5b380ccab3645a972)
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(This used to be commit 4a99fa266672e2989f9e62baf9090eb45df750ea)
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messaging wrapper
and tdb_wrap_open.
Volker
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void message_register(int msg_type,
void (*fn)(int msg_type, struct process_id pid,
- void *buf, size_t len))
+ void *buf, size_t len,
+ void *private_data),
+ void *private_data)
{
struct dispatch_fns *dfn;
So this adds a (so far unused) private pointer that is passed from
message_register to the message handler. A prerequisite to implement a tiny
samba4-API compatible wrapper around our messaging system. That itself is
necessary for the Samba4 notify system.
Yes, I know, I could import the whole Samba4 messaging system, but I want to
do it step by step and I think getting notify in is more important in this
step.
Volker
(This used to be commit c8ae60ed65dcce9660ee39c75488f2838cf9a28b)
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then terminate the traversal once we've done that.
Jeremy.
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per type - this is all we use right now and makes
re-entrancy problems with deleting handlers with
a message dispatch loop go away.
Jeremy.
(This used to be commit 2e9b6faeae1474d65a5c12f5a19b0ae045d47c2e)
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in tdb message processing. If we're inside a dispatch
function and we delete our own handler we'd walk onto
the next pointer from a deleted memory block. Fixes
crash bug in winbindd (and goodness knows where else).
Jeremy.
(This used to be commit 27a4c1121404e346432d90b97b518861e038e9f2)
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calls make it :
become_root_uid_only()
operation
unbecome_root_uid_only()
saving errno across the second call. Most of our internal
change calls can be replaced with these simple calls.
Jeremy
(This used to be commit 4143aa83c029848d8ec741d9218b3fa6e3fd28dd)
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fix the messaging code to call the efficient calls :
save_re_uid()
set_effective_uid(0);
messaging_op
restore_re_uid();
instead of using heavyweight become_root()/unbecome_root()
pairs around all messaging code. Fixup the messaging
code to ensure sec_init() is called (only once) so that non-root
processes still work when sending messages.
This is a lighter weight solution to become_root()/unbecome_root()
(which swaps all the supplemental groups) and should be more
efficient. I will migrate all server code over to using this
(a similar technique should be used in the passdb backend
where needed).
Jeremy.
(This used to be commit 4ace291278d9a44f5c577bdd3b282c1231e543df)
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if len != 0.
Jeremy.
(This used to be commit e99cedfb0cabe3863797c8bd4594ee0826022d2e)
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ensure that global memory is freed when unloading pam_winbind.so (needs more testing on non-linux platforms)
(This used to be commit 1e0b79e591d70352a96e0a0487d8f394dc7b36ba)
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Sync with trunk as off r13315
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* \PIPE\unixinfo
* winbindd's {group,alias}membership new functions
* winbindd's lookupsids() functionality
* swat (trunk changes to be reverted as per discussion with Deryck)
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might be
a big relief on messages.tdb contention as ignoring processes with >1000
messages in printing/notify.c should work correctly now.
Jeremy, Jerry told me to ask you about printer scalability torture tests, this
might be a reason why you implemented the message_send_pid_with_timeout
using the signal (shudder) in the first place. :-)
While looking at that... Wouldn't it be better to not use the signal but have
an overall timeout for print_notify_send_messages using GetTimeOfDay & friends
and not use the alarm signal deep inside tdb.c?
Volker
(This used to be commit b5e82bb512d3425839e061e78f4d6fe0bd05b708)
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printmig.exe work
* merge the sys_select_signal(char c) change from trunk
in order to keeo the winbind code in sync
(This used to be commit a112c5570a7f8ddddde1af0fa665f40a6067e8cf)
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allocation
functions so we can funnel through some well known functions. Should help greatly with
malloc checking.
HEAD patch to follow.
Jeremy.
(This used to be commit 620f2e608f70ba92f032720c031283d295c5c06a)
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memory cache associated with open printer handles; also make sure that register_messages_flags() doesn't overwrite the originally registers flags
(This used to be commit 540daf71d8ad189af5dd6d45aa1ce2b3d67da752)
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1000.
Jeremy.
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(This used to be commit 59f8fc438a2ff5bb7ff115a19f6aacbb0ef7b653)
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Apply the job returned limit across all requests for job queues.
Jeremy.
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(This used to be commit 04a5cbc8964386774acdca759b4cfaded068c8f2)
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messages. Stops build-up of large numbers of smbd's waiting to terminate
on large print throughput.
Jeremy.
(This used to be commit 07efebb98473cb3d4adc6b2e0afef3f06dcc99b8)
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(This used to be commit abb112ba2ad362036c7b3f340d5f64d6fcc0cd3c)
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contention on the messaging tdb.
Jeremy.
(This used to be commit ee0ceeff99f32146bebd4b49d346abdaa20aa10c)
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the amount of time we hold tdb locks). Gulp down all messages at once rather
than reading/re-writing one at a time. NOTE: All dispatch routines *must*
be able to cope with incoming message on *odd* byte boundaries (all current
handlers do).
Jeremy.
(This used to be commit b752c0340f96669b2b2573cf7d3d10f99580b070)
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