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Commit Graph

15 Commits

Author SHA1 Message Date
Volker Lendecke
6b5b999d2f messaging: Add messaging_dgm_forall
This factors out the traversal function from _wipe. It will be used to
replace message_send_all soon.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2017-12-05 00:56:12 +01:00
Volker Lendecke
d05dfe3807 messaging: Add an indirection for messaging_dgm_register_tevent_context
Only one tevent_fd is possible for every file descriptor.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
2016-10-05 11:47:17 +02:00
Volker Lendecke
7099ba8770 messaging: Make messaging_dgm_register_tevent_context return a tevent_fd
Signed-off-by: Volker Lendecke <vl@samba.org>
Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2016-10-05 00:06:23 +02:00
Volker Lendecke
fc0b35b41c messages_dgm: Pass receiving "ev" to recv_cb
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2016-10-05 00:06:22 +02:00
Volker Lendecke
01d7e26f7f lib: Push down unique generation one level
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
2015-10-19 12:09:10 +02:00
Volker Lendecke
37f01c869d messages_dgm: Add messaging_dgm_get_unique
To be able to read, we need to open the lockfile O_RDWR instead of O_WRONLY

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2015-09-30 23:51:13 +02:00
Volker Lendecke
bc986ffed2 messages_dgm: Add a few #includes
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
2015-02-13 23:32:06 +01:00
Volker Lendecke
a3efb70c87 messages_dgm: Move directory handling up
When we want to use messages_dgm in source4, we need to find better
places for the lock and socket directories. Source4 does not have the
concept of a cache directory. So I chose "private dir"/sock and "lock
dir"/msg as subdirectories.

This moves directory creation from messages_dgm.c to messages.c,
source4/lib/messaging will have its own way of doing this.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
2015-02-13 23:32:06 +01:00
Volker Lendecke
293a602b33 messages_dgm: Only pass "unique" to messaging_dgm_init
We have only one context per pid, so messaging_dgm_init can do getpid()
itself.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
2015-02-13 23:32:06 +01:00
Michael Adam
00d9ee04dd s3:messaging: allow the messaging receive callback to change the fds
This allows the callback to consume the fds and e.g. set
them to -1 so that the caller can then treat (close) only those
fds that have not been consumed.

Signed-off-by: Michael Adam <obnox@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
2014-09-30 16:36:10 +02:00
Michael Adam
1667839192 s3:messaging: add fds-array to message-backend send function
Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Michael Adam <obnox@samba.org>
2014-09-24 08:44:12 +02:00
Stefan Metzmacher
64d140197e s3:messaging: make it possible to receive a fd array from another process
In order to receive the fd array the caller needs to use
messaging_filtered_read_send/recv(). For all higher level
methods we silently close/ignore the fd array.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
2014-09-24 08:44:11 +02:00
Volker Lendecke
7bc2e2d0d4 messaging_dgm: Don't expose the messaging_dgm_context
Right now we can only support one messaging_dgm_context per process
anyway, the code has checks for this. I would like to keep it that
way, in the future we will have multiple messaging_context's or
imessaging_context's filtering based upon the dst server_id.

Why this change? messaging_dgm's lockfile contains the
serverid->unique_id. When designing messaging_dgm, I had in mind to
remove the serverid.tdb and replace it with the dgm lockfiles for server
lookup and enumeration. I have a WIP-patchset that gets rid of almost
all users of serverid.tdb. The problem is serverid_exists. Here we don't
have a messaging_context available, and it would be pretty intrusive
to make it so. This problem has plagued us since ctdb was developed,
see for example the comment

/*
 * This is a Samba3 hack/optimization. Routines like process_exists need to
 * talk to ctdbd, and they don't get handed a messaging context.
 */

in messaging_ctdb.c. This patchset removes this problem in a radical way:
Treat the messaging_dgm context as one globally available structure and
be done with it. The ctdb socket could go the same way in the future.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>

Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Sun Sep 14 16:29:30 CEST 2014 on sn-devel-104
2014-09-14 16:29:30 +02:00
Volker Lendecke
121d3ddce6 messaging3: Move messaging_hdr handling to messages.c.
This makes messages_dgm a simple byte-transport across processes that
knows almost nothing about server_id etc.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2014-08-11 23:57:13 +02:00
Volker Lendecke
a1529c3302 messaging3: Add messages_dgm.h
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2014-08-11 23:57:13 +02:00