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6840549123
Volker, Tridge and other clustering gurus, please check. It is ok to get rid of ifdef CLUSTER_SUPPORT here, right ? Why was unique_id not marshalled at all ? Guenther
151 lines
4.5 KiB
C
151 lines
4.5 KiB
C
/*
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Unix SMB/CIFS implementation.
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messages.c header
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Copyright (C) Andrew Tridgell 2000
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Copyright (C) 2001, 2002 by Martin Pool
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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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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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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_H_
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#define _MESSAGES_H_
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/* change the message version with any incompatible changes in the protocol */
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#define MESSAGE_VERSION 2
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/*
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* Special flags passed to message_send. Allocated from the top, lets see when
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* it collides with the message types in the lower 16 bits :-)
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*/
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/*
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* Under high load, this message can be dropped. Use for notify-style
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* messages that are not critical for correct operation.
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*/
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#define MSG_FLAG_LOWPRIORITY 0x80000000
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/* Flags to classify messages - used in message_send_all() */
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/* Sender will filter by flag. */
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#define FLAG_MSG_GENERAL 0x0001
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#define FLAG_MSG_SMBD 0x0002
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#define FLAG_MSG_NMBD 0x0004
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#define FLAG_MSG_PRINT_NOTIFY 0x0008
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#define FLAG_MSG_PRINT_GENERAL 0x0010
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/* dbwrap messages 4001-4999 */
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#define FLAG_MSG_DBWRAP 0x0020
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/*
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* Virtual Node Numbers are identifying a node within a cluster. Ctdbd sets
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* this, we retrieve our vnn from it.
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*/
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#define NONCLUSTER_VNN (0xFFFFFFFF)
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/*
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* ctdb gives us 64-bit server ids for messaging_send. This is done to avoid
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* pid clashes and to be able to register for special messages like "all
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* smbds".
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*
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* Normal individual server id's have the upper 32 bits to 0, I picked "1" for
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* Samba, other subsystems might use something else.
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*/
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#define MSG_SRVID_SAMBA 0x0000000100000000LL
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#include "librpc/gen_ndr/server_id.h"
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#ifdef CLUSTER_SUPPORT
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#define MSG_BROADCAST_PID_STR "0:0"
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#else
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#define MSG_BROADCAST_PID_STR "0"
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#endif
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struct messaging_context;
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struct messaging_rec;
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/*
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* struct messaging_context belongs to messages.c, but because we still have
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* messaging_dispatch, we need it here. Once we get rid of signals for
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* notifying processes, this will go.
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*/
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struct messaging_context {
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struct server_id id;
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struct event_context *event_ctx;
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struct messaging_callback *callbacks;
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struct messaging_backend *local;
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struct messaging_backend *remote;
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};
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struct messaging_backend {
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NTSTATUS (*send_fn)(struct messaging_context *msg_ctx,
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struct server_id pid, int msg_type,
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const DATA_BLOB *data,
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struct messaging_backend *backend);
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void *private_data;
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};
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NTSTATUS messaging_tdb_init(struct messaging_context *msg_ctx,
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TALLOC_CTX *mem_ctx,
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struct messaging_backend **presult);
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bool messaging_tdb_parent_init(TALLOC_CTX *mem_ctx);
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NTSTATUS messaging_ctdbd_init(struct messaging_context *msg_ctx,
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TALLOC_CTX *mem_ctx,
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struct messaging_backend **presult);
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struct ctdbd_connection *messaging_ctdbd_connection(void);
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bool message_send_all(struct messaging_context *msg_ctx,
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int msg_type,
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const void *buf, size_t len,
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int *n_sent);
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struct event_context *messaging_event_context(struct messaging_context *msg_ctx);
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struct messaging_context *messaging_init(TALLOC_CTX *mem_ctx,
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struct server_id server_id,
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struct event_context *ev);
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struct server_id messaging_server_id(const struct messaging_context *msg_ctx);
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/*
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* re-init after a fork
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*/
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NTSTATUS messaging_reinit(struct messaging_context *msg_ctx,
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struct server_id id);
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NTSTATUS messaging_register(struct messaging_context *msg_ctx,
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void *private_data,
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uint32_t msg_type,
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void (*fn)(struct messaging_context *msg,
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void *private_data,
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uint32_t msg_type,
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struct server_id server_id,
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DATA_BLOB *data));
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void messaging_deregister(struct messaging_context *ctx, uint32_t msg_type,
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void *private_data);
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NTSTATUS messaging_send(struct messaging_context *msg_ctx,
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struct server_id server,
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uint32_t msg_type, const DATA_BLOB *data);
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NTSTATUS messaging_send_buf(struct messaging_context *msg_ctx,
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struct server_id server, uint32_t msg_type,
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const uint8 *buf, size_t len);
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void messaging_dispatch_rec(struct messaging_context *msg_ctx,
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struct messaging_rec *rec);
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#endif
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