Commit | Line | Data |
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6e3805e2 DG |
1 | /* |
2 | * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca> | |
3 | * Julien Desfossez <julien.desfossez@polymtl.ca> | |
773168b7 | 4 | * Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
fac6795d | 5 | * |
d14d33bf AM |
6 | * This program is free software; you can redistribute it and/or modify |
7 | * it under the terms of the GNU General Public License, version 2 only, | |
8 | * as published by the Free Software Foundation. | |
ba999de0 | 9 | * |
990570ed DG |
10 | * This program is distributed in the hope that it will be useful, but WITHOUT |
11 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
d14d33bf | 12 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
990570ed | 13 | * more details. |
ba999de0 | 14 | * |
d14d33bf AM |
15 | * You should have received a copy of the GNU General Public License along |
16 | * with this program; if not, write to the Free Software Foundation, Inc., | |
17 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
fac6795d DG |
18 | */ |
19 | ||
773168b7 | 20 | /* |
990570ed DG |
21 | * This header is meant for liblttng and libust internal use ONLY. These |
22 | * declarations should NOT be considered stable API. | |
773168b7 | 23 | */ |
fac6795d | 24 | |
990570ed DG |
25 | #ifndef _LTTNG_SESSIOND_COMM_H |
26 | #define _LTTNG_SESSIOND_COMM_H | |
27 | ||
fac6795d | 28 | #include <limits.h> |
f3ed775e | 29 | #include <lttng/lttng.h> |
da3c9ec1 | 30 | #include <lttng/snapshot-internal.h> |
00c76cea | 31 | #include <lttng/save-internal.h> |
e9404c27 JG |
32 | #include <lttng/channel-internal.h> |
33 | #include <lttng/trigger/trigger-internal.h> | |
b17231c6 | 34 | #include <common/compat/socket.h> |
a4b92340 | 35 | #include <common/uri.h> |
ce2a9e76 | 36 | #include <common/defaults.h> |
ffe60014 | 37 | #include <common/compat/uuid.h> |
5e16da05 | 38 | |
6364a07a DG |
39 | #include <arpa/inet.h> |
40 | #include <netinet/in.h> | |
41 | #include <sys/un.h> | |
42 | ||
43 | #include "inet.h" | |
44 | #include "inet6.h" | |
2038dd6c | 45 | #include <common/unix.h> |
0d37f2bc | 46 | |
fac6795d | 47 | /* Queue size of listen(2) */ |
f158a754 | 48 | #define LTTNG_SESSIOND_COMM_MAX_LISTEN 64 |
fac6795d | 49 | |
990570ed DG |
50 | /* Maximum number of FDs that can be sent over a Unix socket */ |
51 | #define LTTCOMM_MAX_SEND_FDS 4 | |
52 | ||
3817e7df DG |
53 | /* |
54 | * Get the error code index from 0 since LTTCOMM_OK start at 1000 | |
fac6795d | 55 | */ |
f73fabfd | 56 | #define LTTCOMM_ERR_INDEX(code) (code - LTTCOMM_CONSUMERD_COMMAND_SOCK_READY) |
fac6795d | 57 | |
6abb15de | 58 | enum lttcomm_sessiond_command { |
0d0c377a | 59 | /* Tracer command */ |
7c9534d6 | 60 | LTTNG_ADD_CONTEXT = 0, |
b812e5ca | 61 | /* LTTNG_CALIBRATE used to be here */ |
7c9534d6 JD |
62 | LTTNG_DISABLE_CHANNEL = 2, |
63 | LTTNG_DISABLE_EVENT = 3, | |
834978fd | 64 | LTTNG_LIST_SYSCALLS = 4, |
7c9534d6 JD |
65 | LTTNG_ENABLE_CHANNEL = 5, |
66 | LTTNG_ENABLE_EVENT = 6, | |
18a720cd | 67 | /* 7 */ |
0d0c377a | 68 | /* Session daemon command */ |
7c9534d6 JD |
69 | LTTNG_CREATE_SESSION = 8, |
70 | LTTNG_DESTROY_SESSION = 9, | |
71 | LTTNG_LIST_CHANNELS = 10, | |
72 | LTTNG_LIST_DOMAINS = 11, | |
73 | LTTNG_LIST_EVENTS = 12, | |
74 | LTTNG_LIST_SESSIONS = 13, | |
75 | LTTNG_LIST_TRACEPOINTS = 14, | |
76 | LTTNG_REGISTER_CONSUMER = 15, | |
77 | LTTNG_START_TRACE = 16, | |
78 | LTTNG_STOP_TRACE = 17, | |
79 | LTTNG_LIST_TRACEPOINT_FIELDS = 18, | |
53a80697 | 80 | |
de5e9086 | 81 | /* Consumer */ |
7c9534d6 JD |
82 | LTTNG_DISABLE_CONSUMER = 19, |
83 | LTTNG_ENABLE_CONSUMER = 20, | |
84 | LTTNG_SET_CONSUMER_URI = 21, | |
67676bd8 DG |
85 | /* 22 */ |
86 | /* 23 */ | |
7c9534d6 | 87 | LTTNG_DATA_PENDING = 24, |
da3c9ec1 DG |
88 | LTTNG_SNAPSHOT_ADD_OUTPUT = 25, |
89 | LTTNG_SNAPSHOT_DEL_OUTPUT = 26, | |
90 | LTTNG_SNAPSHOT_LIST_OUTPUT = 27, | |
91 | LTTNG_SNAPSHOT_RECORD = 28, | |
27babd3a | 92 | LTTNG_CREATE_SESSION_SNAPSHOT = 29, |
ecc48a90 | 93 | LTTNG_CREATE_SESSION_LIVE = 30, |
00c76cea | 94 | LTTNG_SAVE_SESSION = 31, |
ccf10263 MD |
95 | LTTNG_TRACK_PID = 32, |
96 | LTTNG_UNTRACK_PID = 33, | |
a5dfbb9d | 97 | LTTNG_LIST_TRACKER_PIDS = 34, |
d7ba1388 | 98 | LTTNG_SET_SESSION_SHM_PATH = 40, |
eded6438 | 99 | LTTNG_REGENERATE_METADATA = 41, |
c2561365 | 100 | LTTNG_REGENERATE_STATEDUMP = 42, |
e9404c27 JG |
101 | LTTNG_REGISTER_TRIGGER = 43, |
102 | LTTNG_UNREGISTER_TRIGGER = 44, | |
7c9534d6 JD |
103 | }; |
104 | ||
105 | enum lttcomm_relayd_command { | |
106 | RELAYD_ADD_STREAM = 1, | |
107 | RELAYD_CREATE_SESSION = 2, | |
108 | RELAYD_START_DATA = 3, | |
109 | RELAYD_UPDATE_SYNC_INFO = 4, | |
110 | RELAYD_VERSION = 5, | |
111 | RELAYD_SEND_METADATA = 6, | |
112 | RELAYD_CLOSE_STREAM = 7, | |
113 | RELAYD_DATA_PENDING = 8, | |
114 | RELAYD_QUIESCENT_CONTROL = 9, | |
115 | RELAYD_BEGIN_DATA_PENDING = 10, | |
116 | RELAYD_END_DATA_PENDING = 11, | |
1c20f0e2 JD |
117 | RELAYD_ADD_INDEX = 12, |
118 | RELAYD_SEND_INDEX = 13, | |
119 | RELAYD_CLOSE_INDEX = 14, | |
a4baae1b | 120 | /* Live-reading commands (2.4+). */ |
d3e2ba59 | 121 | RELAYD_LIST_SESSIONS = 15, |
a4baae1b JD |
122 | /* All streams of the channel have been sent to the relayd (2.4+). */ |
123 | RELAYD_STREAMS_SENT = 16, | |
93ec662e JD |
124 | /* Ask the relay to reset the metadata trace file (2.8+) */ |
125 | RELAYD_RESET_METADATA = 17, | |
a1ae2ea5 JD |
126 | /* Create a folder on the relayd FS (2.11+) */ |
127 | RELAYD_MKDIR = 21, | |
fac6795d DG |
128 | }; |
129 | ||
130 | /* | |
131 | * lttcomm error code. | |
132 | */ | |
133 | enum lttcomm_return_code { | |
0c759fc9 | 134 | LTTCOMM_CONSUMERD_SUCCESS = 0, /* Everything went fine. */ |
f73fabfd DG |
135 | LTTCOMM_CONSUMERD_COMMAND_SOCK_READY = 1, /* Command socket ready */ |
136 | LTTCOMM_CONSUMERD_SUCCESS_RECV_FD, /* Success on receiving fds */ | |
137 | LTTCOMM_CONSUMERD_ERROR_RECV_FD, /* Error on receiving fds */ | |
138 | LTTCOMM_CONSUMERD_ERROR_RECV_CMD, /* Error on receiving command */ | |
139 | LTTCOMM_CONSUMERD_POLL_ERROR, /* Error in polling thread */ | |
140 | LTTCOMM_CONSUMERD_POLL_NVAL, /* Poll on closed fd */ | |
141 | LTTCOMM_CONSUMERD_POLL_HUP, /* All fds have hungup */ | |
142 | LTTCOMM_CONSUMERD_EXIT_SUCCESS, /* Consumerd exiting normally */ | |
143 | LTTCOMM_CONSUMERD_EXIT_FAILURE, /* Consumerd exiting on error */ | |
144 | LTTCOMM_CONSUMERD_OUTFD_ERROR, /* Error opening the tracefile */ | |
145 | LTTCOMM_CONSUMERD_SPLICE_EBADF, /* EBADF from splice(2) */ | |
146 | LTTCOMM_CONSUMERD_SPLICE_EINVAL, /* EINVAL from splice(2) */ | |
147 | LTTCOMM_CONSUMERD_SPLICE_ENOMEM, /* ENOMEM from splice(2) */ | |
148 | LTTCOMM_CONSUMERD_SPLICE_ESPIPE, /* ESPIPE from splice(2) */ | |
ffe60014 | 149 | LTTCOMM_CONSUMERD_ENOMEM, /* Consumer is out of memory */ |
d88aee68 DG |
150 | LTTCOMM_CONSUMERD_ERROR_METADATA, /* Error with metadata. */ |
151 | LTTCOMM_CONSUMERD_FATAL, /* Fatal error. */ | |
618a6a28 | 152 | LTTCOMM_CONSUMERD_RELAYD_FAIL, /* Error on remote relayd */ |
0c759fc9 | 153 | LTTCOMM_CONSUMERD_CHANNEL_FAIL, /* Channel creation failed. */ |
e462382a | 154 | LTTCOMM_CONSUMERD_CHAN_NOT_FOUND, /* Channel not found. */ |
e9404c27 | 155 | LTTCOMM_CONSUMERD_ALREADY_SET, /* Resource already set. */ |
80e327fa | 156 | |
20fe2104 DG |
157 | /* MUST be last element */ |
158 | LTTCOMM_NR, /* Last element */ | |
fac6795d DG |
159 | }; |
160 | ||
de5e9086 DG |
161 | /* lttng socket protocol. */ |
162 | enum lttcomm_sock_proto { | |
163 | LTTCOMM_SOCK_UDP, | |
164 | LTTCOMM_SOCK_TCP, | |
165 | }; | |
166 | ||
167 | /* | |
168 | * Index in the net_families array below. Please keep in sync! | |
169 | */ | |
170 | enum lttcomm_sock_domain { | |
01d0a631 CB |
171 | LTTCOMM_INET = 0, |
172 | LTTCOMM_INET6 = 1, | |
de5e9086 DG |
173 | }; |
174 | ||
331744e3 JD |
175 | enum lttcomm_metadata_command { |
176 | LTTCOMM_METADATA_REQUEST = 1, | |
177 | }; | |
178 | ||
179 | /* | |
180 | * Commands sent from the consumerd to the sessiond to request if new metadata | |
181 | * is available. This message is used to find the per UID _or_ per PID registry | |
182 | * for the channel key. For per UID lookup, the triplet | |
183 | * bits_per_long/uid/session_id is used. On lookup failure, we search for the | |
184 | * per PID registry indexed by session id ignoring the other values. | |
185 | */ | |
186 | struct lttcomm_metadata_request_msg { | |
1950109e JD |
187 | uint64_t session_id; /* Tracing session id */ |
188 | uint64_t session_id_per_pid; /* Tracing session id for per-pid */ | |
331744e3 JD |
189 | uint32_t bits_per_long; /* Consumer ABI */ |
190 | uint32_t uid; | |
191 | uint64_t key; /* Metadata channel key. */ | |
192 | } LTTNG_PACKED; | |
193 | ||
de5e9086 DG |
194 | struct lttcomm_sockaddr { |
195 | enum lttcomm_sock_domain type; | |
196 | union { | |
197 | struct sockaddr_in sin; | |
198 | struct sockaddr_in6 sin6; | |
199 | } addr; | |
fc5e05b7 | 200 | } LTTNG_PACKED; |
de5e9086 DG |
201 | |
202 | struct lttcomm_sock { | |
d88aee68 | 203 | int32_t fd; |
de5e9086 DG |
204 | enum lttcomm_sock_proto proto; |
205 | struct lttcomm_sockaddr sockaddr; | |
206 | const struct lttcomm_proto_ops *ops; | |
fc5e05b7 | 207 | } LTTNG_PACKED; |
de5e9086 | 208 | |
6151a90f JD |
209 | /* |
210 | * Relayd sock. Adds the protocol version to use for the communications with | |
211 | * the relayd. | |
212 | */ | |
213 | struct lttcomm_relayd_sock { | |
214 | struct lttcomm_sock sock; | |
215 | uint32_t major; | |
216 | uint32_t minor; | |
217 | } LTTNG_PACKED; | |
218 | ||
de5e9086 DG |
219 | struct lttcomm_net_family { |
220 | int family; | |
221 | int (*create) (struct lttcomm_sock *sock, int type, int proto); | |
222 | }; | |
223 | ||
224 | struct lttcomm_proto_ops { | |
225 | int (*bind) (struct lttcomm_sock *sock); | |
226 | int (*close) (struct lttcomm_sock *sock); | |
227 | int (*connect) (struct lttcomm_sock *sock); | |
228 | struct lttcomm_sock *(*accept) (struct lttcomm_sock *sock); | |
229 | int (*listen) (struct lttcomm_sock *sock, int backlog); | |
230 | ssize_t (*recvmsg) (struct lttcomm_sock *sock, void *buf, size_t len, | |
231 | int flags); | |
c2d69327 JG |
232 | ssize_t (*sendmsg) (struct lttcomm_sock *sock, const void *buf, |
233 | size_t len, int flags); | |
de5e9086 DG |
234 | }; |
235 | ||
fac6795d | 236 | /* |
9bda164d | 237 | * Data structure received from lttng client to session daemon. |
fac6795d DG |
238 | */ |
239 | struct lttcomm_session_msg { | |
d0b96690 | 240 | uint32_t cmd_type; /* enum lttcomm_sessiond_command */ |
42abccdb | 241 | struct lttng_session session; |
9f19cc17 | 242 | struct lttng_domain domain; |
fac6795d | 243 | union { |
f3ed775e | 244 | /* Event data */ |
fac6795d | 245 | struct { |
db8870ed | 246 | char channel_name[LTTNG_SYMBOL_NAME_LEN]; |
1179a48f | 247 | struct lttng_event event LTTNG_PACKED; |
6b453b5e JG |
248 | /* Length of following filter expression. */ |
249 | uint32_t expression_len; | |
025faf73 DG |
250 | /* Length of following bytecode for filter. */ |
251 | uint32_t bytecode_len; | |
a5516688 JI |
252 | /* exclusion data */ |
253 | uint32_t exclusion_count; | |
254 | /* | |
255 | * After this structure, the following variable-length | |
256 | * items are transmitted: | |
257 | * - char exclusion_names[LTTNG_SYMBOL_NAME_LEN][exclusion_count] | |
6b453b5e | 258 | * - unsigned char filter_expression[expression_len] |
a5516688 JI |
259 | * - unsigned char filter_bytecode[bytecode_len] |
260 | */ | |
fc5e05b7 | 261 | } LTTNG_PACKED enable; |
6e911cad MD |
262 | struct { |
263 | char channel_name[LTTNG_SYMBOL_NAME_LEN]; | |
264 | struct lttng_event event LTTNG_PACKED; | |
265 | /* Length of following filter expression. */ | |
266 | uint32_t expression_len; | |
267 | /* Length of following bytecode for filter. */ | |
268 | uint32_t bytecode_len; | |
269 | /* | |
270 | * After this structure, the following variable-length | |
271 | * items are transmitted: | |
272 | * - unsigned char filter_expression[expression_len] | |
273 | * - unsigned char filter_bytecode[bytecode_len] | |
274 | */ | |
275 | } LTTNG_PACKED disable; | |
f3ed775e DG |
276 | /* Create channel */ |
277 | struct { | |
1179a48f | 278 | struct lttng_channel chan LTTNG_PACKED; |
e9404c27 JG |
279 | /* struct lttng_channel_extended is already packed. */ |
280 | struct lttng_channel_extended extended; | |
fc5e05b7 | 281 | } LTTNG_PACKED channel; |
d65106b1 DG |
282 | /* Context */ |
283 | struct { | |
db8870ed | 284 | char channel_name[LTTNG_SYMBOL_NAME_LEN]; |
1179a48f | 285 | struct lttng_event_context ctx LTTNG_PACKED; |
2001793c JG |
286 | uint32_t provider_name_len; |
287 | uint32_t context_name_len; | |
fc5e05b7 | 288 | } LTTNG_PACKED context; |
d9800920 DG |
289 | /* Use by register_consumer */ |
290 | struct { | |
291 | char path[PATH_MAX]; | |
fc5e05b7 | 292 | } LTTNG_PACKED reg; |
9f19cc17 DG |
293 | /* List */ |
294 | struct { | |
db8870ed | 295 | char channel_name[LTTNG_SYMBOL_NAME_LEN]; |
fc5e05b7 | 296 | } LTTNG_PACKED list; |
d0254c7c | 297 | struct lttng_calibrate calibrate; |
a4b92340 | 298 | /* Used by the set_consumer_url and used by create_session also call */ |
de5e9086 | 299 | struct { |
a4b92340 DG |
300 | /* Number of lttng_uri following */ |
301 | uint32_t size; | |
fc5e05b7 | 302 | } LTTNG_PACKED uri; |
da3c9ec1 | 303 | struct { |
1179a48f | 304 | struct lttng_snapshot_output output LTTNG_PACKED; |
da3c9ec1 DG |
305 | } LTTNG_PACKED snapshot_output; |
306 | struct { | |
307 | uint32_t wait; | |
1179a48f | 308 | struct lttng_snapshot_output output LTTNG_PACKED; |
da3c9ec1 | 309 | } LTTNG_PACKED snapshot_record; |
ecc48a90 JD |
310 | struct { |
311 | uint32_t nb_uri; | |
312 | unsigned int timer_interval; /* usec */ | |
313 | } LTTNG_PACKED session_live; | |
00c76cea | 314 | struct { |
1179a48f | 315 | struct lttng_save_session_attr attr; /* struct already packed */ |
00c76cea | 316 | } LTTNG_PACKED save_session; |
d7ba1388 MD |
317 | struct { |
318 | char shm_path[PATH_MAX]; | |
319 | } LTTNG_PACKED set_shm_path; | |
ccf10263 MD |
320 | struct { |
321 | uint32_t pid; | |
322 | } LTTNG_PACKED pid_tracker; | |
e9404c27 JG |
323 | struct { |
324 | uint32_t length; | |
325 | } LTTNG_PACKED trigger; | |
fac6795d | 326 | } u; |
fc5e05b7 | 327 | } LTTNG_PACKED; |
fac6795d | 328 | |
d93c4f1f | 329 | #define LTTNG_FILTER_MAX_LEN 65536 |
53a80697 MD |
330 | |
331 | /* | |
332 | * Filter bytecode data. The reloc table is located at the end of the | |
333 | * bytecode. It is made of tuples: (uint16_t, var. len. string). It | |
334 | * starts at reloc_table_offset. | |
335 | */ | |
b6bbed5f | 336 | #define LTTNG_FILTER_PADDING 32 |
53a80697 | 337 | struct lttng_filter_bytecode { |
d93c4f1f CB |
338 | uint32_t len; /* len of data */ |
339 | uint32_t reloc_table_offset; | |
f3f0db50 | 340 | uint64_t seqnum; |
b6bbed5f | 341 | char padding[LTTNG_FILTER_PADDING]; |
53a80697 | 342 | char data[0]; |
fc5e05b7 | 343 | } LTTNG_PACKED; |
53a80697 | 344 | |
579640f9 JI |
345 | /* |
346 | * Event exclusion data. At the end of the structure, there will actually | |
347 | * by zero or more names, where the actual number of names is given by | |
348 | * the 'count' item of the structure. | |
349 | */ | |
350 | #define LTTNG_EVENT_EXCLUSION_PADDING 32 | |
351 | struct lttng_event_exclusion { | |
352 | uint32_t count; | |
353 | char padding[LTTNG_EVENT_EXCLUSION_PADDING]; | |
caafa356 | 354 | char names[0][LTTNG_SYMBOL_NAME_LEN]; |
579640f9 JI |
355 | } LTTNG_PACKED; |
356 | ||
d7af3565 PP |
357 | #define LTTNG_EVENT_EXCLUSION_NAME_AT(_exclusion, _i) \ |
358 | (&(_exclusion)->names[_i][0]) | |
359 | ||
b4e3ceb9 PP |
360 | /* |
361 | * Event command header. | |
362 | */ | |
363 | struct lttcomm_event_command_header { | |
364 | /* Number of events */ | |
365 | uint32_t nb_events; | |
366 | } LTTNG_PACKED; | |
367 | ||
368 | /* | |
369 | * Event extended info header. This is the structure preceding each | |
370 | * extended info data. | |
371 | */ | |
372 | struct lttcomm_event_extended_header { | |
373 | /* | |
374 | * Size of filter string immediately following this header. | |
375 | * This size includes the terminal null character. | |
376 | */ | |
377 | uint32_t filter_len; | |
795d57ce PP |
378 | |
379 | /* | |
380 | * Number of exclusion names, immediately following the filter | |
381 | * string. Each exclusion name has a fixed length of | |
382 | * LTTNG_SYMBOL_NAME_LEN bytes, including the terminal null | |
383 | * character. | |
384 | */ | |
385 | uint32_t nb_exclusions; | |
b4e3ceb9 PP |
386 | } LTTNG_PACKED; |
387 | ||
fac6795d | 388 | /* |
5e16da05 | 389 | * Data structure for the response from sessiond to the lttng client. |
fac6795d | 390 | */ |
5461b305 | 391 | struct lttcomm_lttng_msg { |
d0b96690 DG |
392 | uint32_t cmd_type; /* enum lttcomm_sessiond_command */ |
393 | uint32_t ret_code; /* enum lttcomm_return_code */ | |
394 | uint32_t pid; /* pid_t */ | |
795a978d | 395 | uint32_t cmd_header_size; |
773168b7 | 396 | uint32_t data_size; |
fc5e05b7 | 397 | } LTTNG_PACKED; |
fac6795d | 398 | |
da3c9ec1 DG |
399 | struct lttcomm_lttng_output_id { |
400 | uint32_t id; | |
401 | } LTTNG_PACKED; | |
402 | ||
6e3805e2 | 403 | /* |
3bd1e081 MD |
404 | * lttcomm_consumer_msg is the message sent from sessiond to consumerd |
405 | * to either add a channel, add a stream, update a stream, or stop | |
406 | * operation. | |
6e3805e2 | 407 | */ |
3bd1e081 MD |
408 | struct lttcomm_consumer_msg { |
409 | uint32_t cmd_type; /* enum consumerd_command */ | |
410 | union { | |
411 | struct { | |
d88aee68 | 412 | uint64_t channel_key; |
ffe60014 DG |
413 | uint64_t session_id; |
414 | char pathname[PATH_MAX]; | |
d88aee68 DG |
415 | uint32_t uid; |
416 | uint32_t gid; | |
417 | uint64_t relayd_id; | |
c30aaa51 | 418 | /* nb_init_streams is the number of streams open initially. */ |
d88aee68 | 419 | uint32_t nb_init_streams; |
de5e9086 | 420 | char name[LTTNG_SYMBOL_NAME_LEN]; |
ffe60014 DG |
421 | /* Use splice or mmap to consume this fd */ |
422 | enum lttng_event_output output; | |
423 | int type; /* Per cpu or metadata. */ | |
1624d5b7 JD |
424 | uint64_t tracefile_size; /* bytes */ |
425 | uint32_t tracefile_count; /* number of tracefiles */ | |
2bba9e53 DG |
426 | /* If the channel's streams have to be monitored or not. */ |
427 | uint32_t monitor; | |
ecc48a90 JD |
428 | /* timer to check the streams usage in live mode (usec). */ |
429 | unsigned int live_timer_interval; | |
e9404c27 JG |
430 | /* timer to sample a channel's positions (usec). */ |
431 | unsigned int monitor_timer_interval; | |
ffe60014 | 432 | } LTTNG_PACKED channel; /* Only used by Kernel. */ |
3bd1e081 | 433 | struct { |
d88aee68 DG |
434 | uint64_t stream_key; |
435 | uint64_t channel_key; | |
436 | int32_t cpu; /* On which CPU this stream is assigned. */ | |
6dc3064a DG |
437 | /* Tells the consumer if the stream should be or not monitored. */ |
438 | uint32_t no_monitor; | |
ffe60014 | 439 | } LTTNG_PACKED stream; /* Only used by Kernel. */ |
de5e9086 | 440 | struct { |
d88aee68 | 441 | uint64_t net_index; |
de5e9086 DG |
442 | enum lttng_stream_type type; |
443 | /* Open socket to the relayd */ | |
6151a90f | 444 | struct lttcomm_relayd_sock sock; |
46e6455f DG |
445 | /* Tracing session id associated to the relayd. */ |
446 | uint64_t session_id; | |
d3e2ba59 JD |
447 | /* Relayd session id, only used with control socket. */ |
448 | uint64_t relayd_session_id; | |
fc5e05b7 | 449 | } LTTNG_PACKED relayd_sock; |
173af62f DG |
450 | struct { |
451 | uint64_t net_seq_idx; | |
fc5e05b7 | 452 | } LTTNG_PACKED destroy_relayd; |
53632229 DG |
453 | struct { |
454 | uint64_t session_id; | |
fc5e05b7 | 455 | } LTTNG_PACKED data_pending; |
ffe60014 | 456 | struct { |
d0b96690 DG |
457 | uint64_t subbuf_size; /* bytes */ |
458 | uint64_t num_subbuf; /* power of 2 */ | |
d88aee68 DG |
459 | int32_t overwrite; /* 1: overwrite, 0: discard */ |
460 | uint32_t switch_timer_interval; /* usec */ | |
461 | uint32_t read_timer_interval; /* usec */ | |
e9404c27 JG |
462 | unsigned int live_timer_interval; /* usec */ |
463 | uint32_t monitor_timer_interval; /* usec */ | |
d88aee68 DG |
464 | int32_t output; /* splice, mmap */ |
465 | int32_t type; /* metadata or per_cpu */ | |
d0b96690 DG |
466 | uint64_t session_id; /* Tracing session id */ |
467 | char pathname[PATH_MAX]; /* Channel file path. */ | |
ffe60014 | 468 | char name[LTTNG_SYMBOL_NAME_LEN]; /* Channel name. */ |
d88aee68 DG |
469 | uint32_t uid; /* User ID of the session */ |
470 | uint32_t gid; /* Group ID ot the session */ | |
471 | uint64_t relayd_id; /* Relayd id if apply. */ | |
472 | uint64_t key; /* Unique channel key. */ | |
b6d38284 | 473 | unsigned char uuid[UUID_LEN]; /* uuid for ust tracer. */ |
7972aab2 | 474 | uint32_t chan_id; /* Channel ID on the tracer side. */ |
1624d5b7 JD |
475 | uint64_t tracefile_size; /* bytes */ |
476 | uint32_t tracefile_count; /* number of tracefiles */ | |
1950109e | 477 | uint64_t session_id_per_pid; /* Per-pid session ID. */ |
2bba9e53 DG |
478 | /* Tells the consumer if the stream should be or not monitored. */ |
479 | uint32_t monitor; | |
567eb353 DG |
480 | /* |
481 | * For UST per UID buffers, this is the application UID of the | |
482 | * channel. This can be different from the user UID requesting the | |
483 | * channel creation and used for the rights on the stream file | |
484 | * because the application can be in the tracing for instance. | |
485 | */ | |
486 | uint32_t ust_app_uid; | |
491d1539 | 487 | int64_t blocking_timeout; |
3d071855 | 488 | char root_shm_path[PATH_MAX]; |
d7ba1388 | 489 | char shm_path[PATH_MAX]; |
ffe60014 DG |
490 | } LTTNG_PACKED ask_channel; |
491 | struct { | |
d88aee68 | 492 | uint64_t key; |
ffe60014 DG |
493 | } LTTNG_PACKED get_channel; |
494 | struct { | |
d88aee68 | 495 | uint64_t key; |
ffe60014 | 496 | } LTTNG_PACKED destroy_channel; |
d88aee68 DG |
497 | struct { |
498 | uint64_t key; /* Metadata channel key. */ | |
499 | uint64_t target_offset; /* Offset in the consumer */ | |
500 | uint64_t len; /* Length of metadata to be received. */ | |
93ec662e | 501 | uint64_t version; /* Version of the metadata. */ |
d88aee68 DG |
502 | } LTTNG_PACKED push_metadata; |
503 | struct { | |
504 | uint64_t key; /* Metadata channel key. */ | |
505 | } LTTNG_PACKED close_metadata; | |
506 | struct { | |
507 | uint64_t key; /* Metadata channel key. */ | |
508 | } LTTNG_PACKED setup_metadata; | |
7972aab2 DG |
509 | struct { |
510 | uint64_t key; /* Channel key. */ | |
511 | } LTTNG_PACKED flush_channel; | |
0dd01979 MD |
512 | struct { |
513 | uint64_t key; /* Channel key. */ | |
514 | } LTTNG_PACKED clear_quiescent_channel; | |
6dc3064a DG |
515 | struct { |
516 | char pathname[PATH_MAX]; | |
517 | /* Indicate if the snapshot goes on the relayd or locally. */ | |
518 | uint32_t use_relayd; | |
519 | uint32_t metadata; /* This a metadata snapshot. */ | |
520 | uint64_t relayd_id; /* Relayd id if apply. */ | |
521 | uint64_t key; | |
d07ceecd | 522 | uint64_t nb_packets_per_stream; |
6dc3064a | 523 | } LTTNG_PACKED snapshot_channel; |
a4baae1b JD |
524 | struct { |
525 | uint64_t channel_key; | |
526 | uint64_t net_seq_idx; | |
527 | } LTTNG_PACKED sent_streams; | |
fb83fe64 JD |
528 | struct { |
529 | uint64_t session_id; | |
530 | uint64_t channel_key; | |
531 | } LTTNG_PACKED discarded_events; | |
532 | struct { | |
533 | uint64_t session_id; | |
534 | uint64_t channel_key; | |
535 | } LTTNG_PACKED lost_packets; | |
93ec662e JD |
536 | struct { |
537 | uint64_t session_id; | |
eded6438 | 538 | } LTTNG_PACKED regenerate_metadata; |
a1ae2ea5 JD |
539 | struct { |
540 | char path[LTTNG_PATH_MAX]; | |
541 | uint64_t relayd_id; /* Relayd id if apply. */ | |
542 | uint64_t session_id; | |
543 | uint32_t uid; | |
544 | uint32_t gid; | |
545 | } LTTNG_PACKED mkdir; | |
3bd1e081 | 546 | } u; |
fc5e05b7 | 547 | } LTTNG_PACKED; |
6e3805e2 | 548 | |
e9404c27 JG |
549 | /* |
550 | * Channel monitoring message returned to the session daemon on every | |
551 | * monitor timer expiration. | |
552 | */ | |
553 | struct lttcomm_consumer_channel_monitor_msg { | |
554 | /* Key of the sampled channel. */ | |
555 | uint64_t key; | |
556 | /* | |
557 | * Lowest and highest usage (bytes) at the moment the sample was taken. | |
558 | */ | |
559 | uint64_t lowest, highest; | |
560 | } LTTNG_PACKED; | |
561 | ||
f50f23d9 DG |
562 | /* |
563 | * Status message returned to the sessiond after a received command. | |
564 | */ | |
565 | struct lttcomm_consumer_status_msg { | |
0c759fc9 | 566 | enum lttcomm_return_code ret_code; |
fc5e05b7 | 567 | } LTTNG_PACKED; |
f50f23d9 | 568 | |
ffe60014 | 569 | struct lttcomm_consumer_status_channel { |
0c759fc9 | 570 | enum lttcomm_return_code ret_code; |
d88aee68 | 571 | uint64_t key; |
ffe60014 DG |
572 | unsigned int stream_count; |
573 | } LTTNG_PACKED; | |
574 | ||
74d0b642 | 575 | #ifdef HAVE_LIBLTTNG_UST_CTL |
3bd1e081 | 576 | |
9df8df5e | 577 | #include <lttng/ust-abi.h> |
6e3805e2 | 578 | |
3817e7df DG |
579 | /* |
580 | * Data structure for the commands sent from sessiond to UST. | |
581 | */ | |
582 | struct lttcomm_ust_msg { | |
3817e7df DG |
583 | uint32_t handle; |
584 | uint32_t cmd; | |
585 | union { | |
3817e7df | 586 | struct lttng_ust_channel channel; |
00a17c97 | 587 | struct lttng_ust_stream stream; |
3817e7df DG |
588 | struct lttng_ust_event event; |
589 | struct lttng_ust_context context; | |
00a17c97 | 590 | struct lttng_ust_tracer_version version; |
3817e7df | 591 | } u; |
fc5e05b7 | 592 | } LTTNG_PACKED; |
3817e7df DG |
593 | |
594 | /* | |
595 | * Data structure for the response from UST to the session daemon. | |
596 | * cmd_type is sent back in the reply for validation. | |
597 | */ | |
598 | struct lttcomm_ust_reply { | |
599 | uint32_t handle; | |
600 | uint32_t cmd; | |
601 | uint32_t ret_code; /* enum lttcomm_return_code */ | |
602 | uint32_t ret_val; /* return value */ | |
603 | union { | |
2b0bf864 DG |
604 | struct { |
605 | uint64_t memory_map_size; | |
fc5e05b7 | 606 | } LTTNG_PACKED channel; |
2b0bf864 DG |
607 | struct { |
608 | uint64_t memory_map_size; | |
fc5e05b7 | 609 | } LTTNG_PACKED stream; |
00a17c97 | 610 | struct lttng_ust_tracer_version version; |
3817e7df | 611 | } u; |
fc5e05b7 | 612 | } LTTNG_PACKED; |
3817e7df | 613 | |
74d0b642 | 614 | #endif /* HAVE_LIBLTTNG_UST_CTL */ |
3bd1e081 | 615 | |
fac6795d DG |
616 | extern const char *lttcomm_get_readable_code(enum lttcomm_return_code code); |
617 | ||
6364a07a DG |
618 | extern int lttcomm_init_inet_sockaddr(struct lttcomm_sockaddr *sockaddr, |
619 | const char *ip, unsigned int port); | |
620 | extern int lttcomm_init_inet6_sockaddr(struct lttcomm_sockaddr *sockaddr, | |
621 | const char *ip, unsigned int port); | |
622 | ||
de5e9086 DG |
623 | extern struct lttcomm_sock *lttcomm_alloc_sock(enum lttcomm_sock_proto proto); |
624 | extern int lttcomm_create_sock(struct lttcomm_sock *sock); | |
625 | extern struct lttcomm_sock *lttcomm_alloc_sock_from_uri(struct lttng_uri *uri); | |
626 | extern void lttcomm_destroy_sock(struct lttcomm_sock *sock); | |
627 | extern struct lttcomm_sock *lttcomm_alloc_copy_sock(struct lttcomm_sock *src); | |
628 | extern void lttcomm_copy_sock(struct lttcomm_sock *dst, | |
629 | struct lttcomm_sock *src); | |
6364a07a | 630 | |
6151a90f JD |
631 | /* Relayd socket object. */ |
632 | extern struct lttcomm_relayd_sock *lttcomm_alloc_relayd_sock( | |
633 | struct lttng_uri *uri, uint32_t major, uint32_t minor); | |
634 | ||
783a3b9a MD |
635 | extern int lttcomm_setsockopt_rcv_timeout(int sock, unsigned int msec); |
636 | extern int lttcomm_setsockopt_snd_timeout(int sock, unsigned int msec); | |
637 | ||
554831e7 MD |
638 | extern void lttcomm_init(void); |
639 | /* Get network timeout, in milliseconds */ | |
640 | extern unsigned long lttcomm_get_network_timeout(void); | |
641 | ||
773168b7 | 642 | #endif /* _LTTNG_SESSIOND_COMM_H */ |