source: branches/samba-3.2.x/source/include/messages.h@ 770

Last change on this file since 770 was 137, checked in by Paul Smedley, 17 years ago

Update trunk to 3.2.0rc2
File size: 7.1 KB
Line 
1/*
2 Unix SMB/CIFS implementation.
3 messages.c header
4 Copyright (C) Andrew Tridgell 2000
5 Copyright (C) 2001, 2002 by Martin Pool
6
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.
11
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.
16
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/>.
19*/
20
21#ifndef _MESSAGES_H_
22#define _MESSAGES_H_
23
24/* change the message version with any incompatible changes in the protocol */
25#define MESSAGE_VERSION 2
26
27
28#define MSG_TYPE_MASK 0xFFFF
29
30/* general messages */
31#define MSG_DEBUG 0x0001
32#define MSG_PING 0x0002
33#define MSG_PONG 0x0003
34#define MSG_PROFILE 0x0004
35#define MSG_REQ_DEBUGLEVEL 0x0005
36#define MSG_DEBUGLEVEL 0x0006
37#define MSG_REQ_PROFILELEVEL 0x0007
38#define MSG_PROFILELEVEL 0x0008
39#define MSG_REQ_POOL_USAGE 0x0009
40#define MSG_POOL_USAGE 0x000A
41
42/* If dmalloc is included, set a steady-state mark */
43#define MSG_REQ_DMALLOC_MARK 0x000B
44
45/* If dmalloc is included, dump to the dmalloc log a description of
46 * what has changed since the last MARK */
47#define MSG_REQ_DMALLOC_LOG_CHANGED 0x000C
48
49#define MSG_SHUTDOWN 0x000D
50
51/* nmbd messages */
52#define MSG_FORCE_ELECTION 0x0101
53#define MSG_WINS_NEW_ENTRY 0x0102
54#define MSG_SEND_PACKET 0x0103
55
56/* printing messages */
57/* #define MSG_PRINTER_NOTIFY 2001*/ /* Obsolete */
58#define MSG_PRINTER_NOTIFY2 0x0202
59
60#define MSG_PRINTER_DRVUPGRADE 0x0203
61#define MSG_PRINTERDATA_INIT_RESET 0x0204
62#define MSG_PRINTER_UPDATE 0x0205
63#define MSG_PRINTER_MOD 0x0206
64
65/* smbd messages */
66#define MSG_SMB_CONF_UPDATED 0x0301
67#define MSG_SMB_FORCE_TDIS 0x0302
68#define MSG_SMB_SAM_SYNC 0x0303
69#define MSG_SMB_SAM_REPL 0x0304
70#define MSG_SMB_UNLOCK 0x0305
71#define MSG_SMB_BREAK_REQUEST 0x0306
72#define MSG_SMB_BREAK_RESPONSE 0x0307
73#define MSG_SMB_ASYNC_LEVEL2_BREAK 0x0308
74#define MSG_SMB_OPEN_RETRY 0x0309
75#define MSG_SMB_KERNEL_BREAK 0x030A
76#define MSG_SMB_FILE_RENAME 0x030B
77#define MSG_SMB_INJECT_FAULT 0x030C
78#define MSG_SMB_BLOCKING_LOCK_CANCEL 0x030D
79#define MSG_SMB_NOTIFY 0x030E
80#define MSG_SMB_STAT_CACHE_DELETE 0x030F
81/*
82 * Samba4 compatibility
83 */
84#define MSG_PVFS_NOTIFY 0x0310
85/*
86 * cluster reconfigure events
87 */
88#define MSG_SMB_BRL_VALIDATE 0x0311
89#define MSG_SMB_RELEASE_IP 0x0312
90/*
91 * Close a specific file given a share entry.
92 */
93#define MSG_SMB_CLOSE_FILE 0x0313
94
95/* winbind messages */
96#define MSG_WINBIND_FINISHED 0x0401
97#define MSG_WINBIND_FORGET_STATE 0x0402
98#define MSG_WINBIND_ONLINE 0x0403
99#define MSG_WINBIND_OFFLINE 0x0404
100#define MSG_WINBIND_ONLINESTATUS 0x0405
101#define MSG_WINBIND_TRY_TO_GO_ONLINE 0x0406
102#define MSG_WINBIND_FAILED_TO_GO_ONLINE 0x0407
103#define MSG_WINBIND_VALIDATE_CACHE 0x0408
104#define MSG_WINBIND_DUMP_DOMAIN_LIST 0x0409
105
106/* event messages */
107#define MSG_DUMP_EVENT_LIST 0x0500
108
109/* dbwrap messages 4001-4999 */
110#define MSG_DBWRAP_TDB2_CHANGES 4001
111
112/*
113 * Special flags passed to message_send. Allocated from the top, lets see when
114 * it collides with the message types in the lower 16 bits :-)
115 */
116
117/*
118 * Under high load, this message can be dropped. Use for notify-style
119 * messages that are not critical for correct operation.
120 */
121#define MSG_FLAG_LOWPRIORITY 0x80000000
122
123
124/* Flags to classify messages - used in message_send_all() */
125/* Sender will filter by flag. */
126
127#define FLAG_MSG_GENERAL 0x0001
128#define FLAG_MSG_SMBD 0x0002
129#define FLAG_MSG_NMBD 0x0004
130#define FLAG_MSG_PRINT_NOTIFY 0x0008
131#define FLAG_MSG_PRINT_GENERAL 0x0010
132/* dbwrap messages 4001-4999 */
133#define FLAG_MSG_DBWRAP 0x0020
134
135
136/*
137 * Virtual Node Numbers are identifying a node within a cluster. Ctdbd sets
138 * this, we retrieve our vnn from it.
139 */
140
141#define NONCLUSTER_VNN (0xFFFFFFFF)
142
143/*
144 * ctdb gives us 64-bit server ids for messaging_send. This is done to avoid
145 * pid clashes and to be able to register for special messages like "all
146 * smbds".
147 *
148 * Normal individual server id's have the upper 32 bits to 0, I picked "1" for
149 * Samba, other subsystems might use something else.
150 */
151
152#define MSG_SRVID_SAMBA 0x0000000100000000LL
153
154
155struct server_id {
156 pid_t pid;
157#ifdef CLUSTER_SUPPORT
158 uint32 vnn;
159#endif
160};
161
162#ifdef CLUSTER_SUPPORT
163#define MSG_BROADCAST_PID_STR "0:0"
164#else
165#define MSG_BROADCAST_PID_STR "0"
166#endif
167
168struct messaging_context;
169struct messaging_rec;
170struct data_blob;
171
172/*
173 * struct messaging_context belongs to messages.c, but because we still have
174 * messaging_dispatch, we need it here. Once we get rid of signals for
175 * notifying processes, this will go.
176 */
177
178struct messaging_context {
179 struct server_id id;
180 struct event_context *event_ctx;
181 struct messaging_callback *callbacks;
182
183 struct messaging_backend *local;
184 struct messaging_backend *remote;
185};
186
187struct messaging_backend {
188 NTSTATUS (*send_fn)(struct messaging_context *msg_ctx,
189 struct server_id pid, int msg_type,
190 const struct data_blob *data,
191 struct messaging_backend *backend);
192 void *private_data;
193};
194
195NTSTATUS messaging_tdb_init(struct messaging_context *msg_ctx,
196 TALLOC_CTX *mem_ctx,
197 struct messaging_backend **presult);
198void message_dispatch(struct messaging_context *msg_ctx);
199
200NTSTATUS messaging_ctdbd_init(struct messaging_context *msg_ctx,
201 TALLOC_CTX *mem_ctx,
202 struct messaging_backend **presult);
203struct ctdbd_connection *messaging_ctdbd_connection(void);
204
205bool message_send_all(struct messaging_context *msg_ctx,
206 int msg_type,
207 const void *buf, size_t len,
208 int *n_sent);
209struct event_context *messaging_event_context(struct messaging_context *msg_ctx);
210struct messaging_context *messaging_init(TALLOC_CTX *mem_ctx,
211 struct server_id server_id,
212 struct event_context *ev);
213
214/*
215 * re-init after a fork
216 */
217NTSTATUS messaging_reinit(struct messaging_context *msg_ctx);
218
219NTSTATUS messaging_register(struct messaging_context *msg_ctx,
220 void *private_data,
221 uint32_t msg_type,
222 void (*fn)(struct messaging_context *msg,
223 void *private_data,
224 uint32_t msg_type,
225 struct server_id server_id,
226 struct data_blob *data));
227void messaging_deregister(struct messaging_context *ctx, uint32_t msg_type,
228 void *private_data);
229NTSTATUS messaging_send(struct messaging_context *msg_ctx,
230 struct server_id server,
231 uint32_t msg_type, const struct data_blob *data);
232NTSTATUS messaging_send_buf(struct messaging_context *msg_ctx,
233 struct server_id server, uint32_t msg_type,
234 const uint8 *buf, size_t len);
235void messaging_dispatch_rec(struct messaging_context *msg_ctx,
236 struct messaging_rec *rec);
237
238#endif
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