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7bc2e2d0d4
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
39 lines
1.3 KiB
C
39 lines
1.3 KiB
C
/*
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* Unix SMB/CIFS implementation.
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* messages_dgm.c header
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* Copyright (C) Volker Lendecke 2014
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _MESSAGES_DGM_H_
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#define _MESSAGES_DGM_H_
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int messaging_dgm_init(struct tevent_context *ev,
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struct server_id pid,
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const char *cache_dir,
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uid_t dir_owner,
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void (*recv_cb)(const uint8_t *msg,
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size_t msg_len,
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void *private_data),
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void *recv_cb_private_data);
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void messaging_dgm_destroy(void);
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int messaging_dgm_send(pid_t pid, const struct iovec *iov, int iovlen);
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int messaging_dgm_cleanup(pid_t pid);
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int messaging_dgm_wipe(void);
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void *messaging_dgm_register_tevent_context(TALLOC_CTX *mem_ctx,
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struct tevent_context *ev);
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#endif
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