2 Unix SMB/CIFS implementation.
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/>.
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
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"
66 #define MSG_BROADCAST_PID_STR "0"
69 struct messaging_context
;
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
{
80 struct event_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
);
95 NTSTATUS
messaging_tdb_init(struct messaging_context
*msg_ctx
,
97 struct messaging_backend
**presult
);
99 bool messaging_tdb_parent_init(TALLOC_CTX
*mem_ctx
);
101 NTSTATUS
messaging_ctdbd_init(struct messaging_context
*msg_ctx
,
103 struct messaging_backend
**presult
);
104 struct ctdbd_connection
*messaging_ctdbd_connection(void);
106 bool message_send_all(struct messaging_context
*msg_ctx
,
108 const void *buf
, size_t len
,
110 struct event_context
*messaging_event_context(struct messaging_context
*msg_ctx
);
111 struct messaging_context
*messaging_init(TALLOC_CTX
*mem_ctx
,
112 struct server_id server_id
,
113 struct event_context
*ev
);
115 struct server_id
messaging_server_id(const struct messaging_context
*msg_ctx
);
118 * re-init after a fork
120 NTSTATUS
messaging_reinit(struct messaging_context
*msg_ctx
,
121 struct server_id id
);
123 NTSTATUS
messaging_register(struct messaging_context
*msg_ctx
,
126 void (*fn
)(struct messaging_context
*msg
,
129 struct server_id server_id
,
131 void messaging_deregister(struct messaging_context
*ctx
, uint32_t msg_type
,
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"