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 2 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, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 /* change the message version with any incompatible changes in the protocol */
26 #define MESSAGE_VERSION 2
29 #define MSG_TYPE_MASK 0xFFFF
31 /* general messages */
32 #define MSG_DEBUG 0x0001
33 #define MSG_PING 0x0002
34 #define MSG_PONG 0x0003
35 #define MSG_PROFILE 0x0004
36 #define MSG_REQ_DEBUGLEVEL 0x0005
37 #define MSG_DEBUGLEVEL 0x0006
38 #define MSG_REQ_PROFILELEVEL 0x0007
39 #define MSG_PROFILELEVEL 0x0008
40 #define MSG_REQ_POOL_USAGE 0x0009
41 #define MSG_POOL_USAGE 0x000A
43 /* If dmalloc is included, set a steady-state mark */
44 #define MSG_REQ_DMALLOC_MARK 0x000B
46 /* If dmalloc is included, dump to the dmalloc log a description of
47 * what has changed since the last MARK */
48 #define MSG_REQ_DMALLOC_LOG_CHANGED 0x000C
50 #define MSG_SHUTDOWN 0x000D
53 #define MSG_FORCE_ELECTION 0x0101
54 #define MSG_WINS_NEW_ENTRY 0x0102
55 #define MSG_SEND_PACKET 0x0103
57 /* printing messages */
58 /* #define MSG_PRINTER_NOTIFY 2001*/ /* Obsolete */
59 #define MSG_PRINTER_NOTIFY2 0x0202
61 #define MSG_PRINTER_DRVUPGRADE 0x0203
62 #define MSG_PRINTERDATA_INIT_RESET 0x0204
63 #define MSG_PRINTER_UPDATE 0x0205
64 #define MSG_PRINTER_MOD 0x0206
67 #define MSG_SMB_CONF_UPDATED 0x0301
68 #define MSG_SMB_FORCE_TDIS 0x0302
69 #define MSG_SMB_SAM_SYNC 0x0303
70 #define MSG_SMB_SAM_REPL 0x0304
71 #define MSG_SMB_UNLOCK 0x0305
72 #define MSG_SMB_BREAK_REQUEST 0x0306
73 #define MSG_SMB_BREAK_RESPONSE 0x0307
74 #define MSG_SMB_ASYNC_LEVEL2_BREAK 0x0308
75 #define MSG_SMB_OPEN_RETRY 0x0309
76 #define MSG_SMB_KERNEL_BREAK 0x030A
77 #define MSG_SMB_FILE_RENAME 0x030B
78 #define MSG_SMB_INJECT_FAULT 0x030C
79 #define MSG_SMB_BLOCKING_LOCK_CANCEL 0x030D
80 #define MSG_SMB_NOTIFY 0x030E
81 #define MSG_SMB_STAT_CACHE_DELETE 0x030F
83 * Samba4 compatibility
85 #define MSG_PVFS_NOTIFY 0x0310
87 * cluster reconfigure events
89 #define MSG_SMB_BRL_VALIDATE 0x0311
90 #define MSG_SMB_RELEASE_IP 0x0312
92 /* winbind messages */
93 #define MSG_WINBIND_FINISHED 0x0401
94 #define MSG_WINBIND_FORGET_STATE 0x0402
95 #define MSG_WINBIND_ONLINE 0x0403
96 #define MSG_WINBIND_OFFLINE 0x0404
97 #define MSG_WINBIND_ONLINESTATUS 0x0405
98 #define MSG_WINBIND_TRY_TO_GO_ONLINE 0x0406
99 #define MSG_WINBIND_FAILED_TO_GO_ONLINE 0x0407
102 * Special flags passed to message_send. Allocated from the top, lets see when
103 * it collides with the message types in the lower 16 bits :-)
107 * Under high load, this message can be dropped. Use for notify-style
108 * messages that are not critical for correct operation.
110 #define MSG_FLAG_LOWPRIORITY 0x80000000
113 /* Flags to classify messages - used in message_send_all() */
114 /* Sender will filter by flag. */
116 #define FLAG_MSG_GENERAL 0x0001
117 #define FLAG_MSG_SMBD 0x0002
118 #define FLAG_MSG_NMBD 0x0004
119 #define FLAG_MSG_PRINT_NOTIFY 0x0008
120 #define FLAG_MSG_PRINT_GENERAL 0x0010
124 * Virtual Node Numbers are identifying a node within a cluster. Ctdbd sets
125 * this, we retrieve our vnn from it.
128 #define NONCLUSTER_VNN (0xFFFFFFFF)
131 * ctdb gives us 64-bit server ids for messaging_send. This is done to avoid
132 * pid clashes and to be able to register for special messages like "all
135 * Normal individual server id's have the upper 32 bits to 0, I picked "1" for
136 * Samba, other subsystems might use something else.
139 #define MSG_SRVID_SAMBA 0x0000000100000000LL
144 #ifdef CLUSTER_SUPPORT
151 struct messaging_context
;
152 struct messaging_rec
;
156 * struct messaging_context belongs to messages.c, but because we still have
157 * messaging_dispatch, we need it here. Once we get rid of signals for
158 * notifying processes, this will go.
161 struct messaging_context
{
163 struct event_context
*event_ctx
;
164 struct messaging_callback
*callbacks
;
166 struct messaging_backend
*local
;
167 struct messaging_backend
*remote
;
170 struct messaging_backend
{
171 NTSTATUS (*send_fn
)(struct messaging_context
*msg_ctx
,
172 struct server_id pid
, int msg_type
,
173 const struct data_blob
*data
,
174 struct messaging_backend
*backend
);
178 NTSTATUS
messaging_tdb_init(struct messaging_context
*msg_ctx
,
180 struct messaging_backend
**presult
);
181 void message_dispatch(struct messaging_context
*msg_ctx
);
183 NTSTATUS
messaging_ctdbd_init(struct messaging_context
*msg_ctx
,
185 struct messaging_backend
**presult
);
186 struct ctdbd_connection
*messaging_ctdbd_connection(void);
188 BOOL
message_send_all(struct messaging_context
*msg_ctx
,
190 const void *buf
, size_t len
,
192 struct event_context
*messaging_event_context(struct messaging_context
*msg_ctx
);
193 struct messaging_context
*messaging_init(TALLOC_CTX
*mem_ctx
,
194 struct server_id server_id
,
195 struct event_context
*ev
);
198 * re-init after a fork
200 NTSTATUS
messaging_reinit(struct messaging_context
*msg_ctx
);
202 NTSTATUS
messaging_register(struct messaging_context
*msg_ctx
,
205 void (*fn
)(struct messaging_context
*msg
,
208 struct server_id server_id
,
209 struct data_blob
*data
));
210 void messaging_deregister(struct messaging_context
*ctx
, uint32_t msg_type
,
212 NTSTATUS
messaging_send(struct messaging_context
*msg_ctx
,
213 struct server_id server
,
214 uint32_t msg_type
, const struct data_blob
*data
);
215 NTSTATUS
messaging_send_buf(struct messaging_context
*msg_ctx
,
216 struct server_id server
, uint32_t msg_type
,
217 const uint8
*buf
, size_t len
);
218 void messaging_dispatch_rec(struct messaging_context
*msg_ctx
,
219 struct messaging_rec
*rec
);