s3:lib: s/struct event_context/struct tevent_context
[Samba/gebeck_regimport.git] / source3 / include / messages.h
blob12fc4399693cadfd05be6b9441b2a6cdb52870ab
1 /*
2 Unix SMB/CIFS implementation.
3 messages.c header
4 Copyright (C) Andrew Tridgell 2000
5 Copyright (C) 2001, 2002 by Martin Pool
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>.
21 #ifndef _MESSAGES_H_
22 #define _MESSAGES_H_
24 /* change the message version with any incompatible changes in the protocol */
25 #define MESSAGE_VERSION 2
28 * Special flags passed to message_send. Allocated from the top, lets see when
29 * it collides with the message types in the lower 16 bits :-)
33 * Under high load, this message can be dropped. Use for notify-style
34 * messages that are not critical for correct operation.
36 #define MSG_FLAG_LOWPRIORITY 0x80000000
39 /* Flags to classify messages - used in message_send_all() */
40 /* Sender will filter by flag. */
42 #define FLAG_MSG_GENERAL 0x0001
43 #define FLAG_MSG_SMBD 0x0002
44 #define FLAG_MSG_NMBD 0x0004
45 #define FLAG_MSG_WINBIND 0x0008
46 #define FLAG_MSG_PRINT_GENERAL 0x0010
47 /* dbwrap messages 4001-4999 */
48 #define FLAG_MSG_DBWRAP 0x0020
51 * ctdb gives us 64-bit server ids for messaging_send. This is done to avoid
52 * pid clashes and to be able to register for special messages like "all
53 * smbds".
55 * Normal individual server id's have the upper 32 bits to 0, I picked "1" for
56 * Samba, other subsystems might use something else.
59 #define MSG_SRVID_SAMBA 0x0000000100000000LL
61 #include "librpc/gen_ndr/server_id.h"
63 #ifdef CLUSTER_SUPPORT
64 #define MSG_BROADCAST_PID_STR "0:0"
65 #else
66 #define MSG_BROADCAST_PID_STR "0"
67 #endif
69 struct messaging_context;
70 struct messaging_rec;
73 * struct messaging_context belongs to messages.c, but because we still have
74 * messaging_dispatch, we need it here. Once we get rid of signals for
75 * notifying processes, this will go.
78 struct messaging_context {
79 struct server_id id;
80 struct tevent_context *event_ctx;
81 struct messaging_callback *callbacks;
83 struct messaging_backend *local;
84 struct messaging_backend *remote;
87 struct messaging_backend {
88 NTSTATUS (*send_fn)(struct messaging_context *msg_ctx,
89 struct server_id pid, int msg_type,
90 const DATA_BLOB *data,
91 struct messaging_backend *backend);
92 void *private_data;
95 NTSTATUS messaging_tdb_init(struct messaging_context *msg_ctx,
96 TALLOC_CTX *mem_ctx,
97 struct messaging_backend **presult);
99 bool messaging_tdb_parent_init(TALLOC_CTX *mem_ctx);
101 void *messaging_tdb_event(TALLOC_CTX *mem_ctx, struct messaging_context *msg,
102 struct tevent_context *ev);
104 NTSTATUS messaging_ctdbd_init(struct messaging_context *msg_ctx,
105 TALLOC_CTX *mem_ctx,
106 struct messaging_backend **presult);
107 struct ctdbd_connection *messaging_ctdbd_connection(void);
109 bool message_send_all(struct messaging_context *msg_ctx,
110 int msg_type,
111 const void *buf, size_t len,
112 int *n_sent);
113 struct messaging_context *messaging_init(TALLOC_CTX *mem_ctx,
114 struct tevent_context *ev);
116 struct server_id messaging_server_id(const struct messaging_context *msg_ctx);
119 * re-init after a fork
121 NTSTATUS messaging_reinit(struct messaging_context *msg_ctx);
123 NTSTATUS messaging_register(struct messaging_context *msg_ctx,
124 void *private_data,
125 uint32_t msg_type,
126 void (*fn)(struct messaging_context *msg,
127 void *private_data,
128 uint32_t msg_type,
129 struct server_id server_id,
130 DATA_BLOB *data));
131 void messaging_deregister(struct messaging_context *ctx, uint32_t msg_type,
132 void *private_data);
133 NTSTATUS messaging_send(struct messaging_context *msg_ctx,
134 struct server_id server,
135 uint32_t msg_type, const DATA_BLOB *data);
137 NTSTATUS messaging_send_buf(struct messaging_context *msg_ctx,
138 struct server_id server, uint32_t msg_type,
139 const uint8 *buf, size_t len);
140 void messaging_dispatch_rec(struct messaging_context *msg_ctx,
141 struct messaging_rec *rec);
143 #include "librpc/gen_ndr/ndr_messaging.h"
145 #endif