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 #define MSG_BROADCAST_PID_STR "0:0"
65 struct messaging_context
;
68 struct messaging_backend
{
69 int (*send_fn
)(struct server_id src
,
70 struct server_id pid
, int msg_type
,
71 const struct iovec
*iov
, int iovlen
,
72 struct messaging_backend
*backend
);
76 struct messaging_dgm_context
;
77 int messaging_dgm_init(TALLOC_CTX
*mem_ctx
,
78 struct tevent_context
*ev
,
80 void (*recv_cb
)(int msg_type
,
86 void *recv_cb_private_data
,
87 struct messaging_dgm_context
**pctx
);
88 int messaging_dgm_send(struct messaging_dgm_context
*ctx
,
89 struct server_id src
, struct server_id pid
,
90 int msg_type
, const struct iovec
*iov
, int iovlen
);
91 int messaging_dgm_cleanup(struct messaging_dgm_context
*ctx
, pid_t pid
);
92 int messaging_dgm_wipe(struct messaging_dgm_context
*ctx
);
93 void *messaging_dgm_register_tevent_context(TALLOC_CTX
*mem_ctx
,
94 struct messaging_dgm_context
*ctx
,
95 struct tevent_context
*ev
);
97 NTSTATUS
messaging_ctdbd_init(struct messaging_context
*msg_ctx
,
99 struct messaging_backend
**presult
);
100 struct ctdbd_connection
*messaging_ctdbd_connection(void);
102 bool message_send_all(struct messaging_context
*msg_ctx
,
104 const void *buf
, size_t len
,
106 struct messaging_context
*messaging_init(TALLOC_CTX
*mem_ctx
,
107 struct tevent_context
*ev
);
109 struct server_id
messaging_server_id(const struct messaging_context
*msg_ctx
);
110 struct tevent_context
*messaging_tevent_context(
111 struct messaging_context
*msg_ctx
);
114 * re-init after a fork
116 NTSTATUS
messaging_reinit(struct messaging_context
*msg_ctx
);
118 NTSTATUS
messaging_register(struct messaging_context
*msg_ctx
,
121 void (*fn
)(struct messaging_context
*msg
,
124 struct server_id server_id
,
126 void messaging_deregister(struct messaging_context
*ctx
, uint32_t msg_type
,
128 NTSTATUS
messaging_send(struct messaging_context
*msg_ctx
,
129 struct server_id server
,
130 uint32_t msg_type
, const DATA_BLOB
*data
);
132 NTSTATUS
messaging_send_buf(struct messaging_context
*msg_ctx
,
133 struct server_id server
, uint32_t msg_type
,
134 const uint8_t *buf
, size_t len
);
135 NTSTATUS
messaging_send_iov(struct messaging_context
*msg_ctx
,
136 struct server_id server
, uint32_t msg_type
,
137 const struct iovec
*iov
, int iovlen
);
138 void messaging_dispatch_rec(struct messaging_context
*msg_ctx
,
139 struct messaging_rec
*rec
);
141 struct tevent_req
*messaging_filtered_read_send(
142 TALLOC_CTX
*mem_ctx
, struct tevent_context
*ev
,
143 struct messaging_context
*msg_ctx
,
144 bool (*filter
)(struct messaging_rec
*rec
, void *private_data
),
146 int messaging_filtered_read_recv(struct tevent_req
*req
, TALLOC_CTX
*mem_ctx
,
147 struct messaging_rec
**presult
);
149 struct tevent_req
*messaging_read_send(TALLOC_CTX
*mem_ctx
,
150 struct tevent_context
*ev
,
151 struct messaging_context
*msg
,
153 int messaging_read_recv(struct tevent_req
*req
, TALLOC_CTX
*mem_ctx
,
154 struct messaging_rec
**presult
);
156 int messaging_cleanup(struct messaging_context
*msg_ctx
, pid_t pid
);
158 bool messaging_parent_dgm_cleanup_init(struct messaging_context
*msg
);
160 #include "librpc/gen_ndr/ndr_messaging.h"