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. | |
fac6795d | 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. |
fac6795d | 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 | ||
d19d9ada | 28 | #define _GNU_SOURCE |
fac6795d | 29 | #include <limits.h> |
f3ed775e | 30 | #include <lttng/lttng.h> |
da3c9ec1 | 31 | #include <lttng/snapshot-internal.h> |
00c76cea | 32 | #include <lttng/save-internal.h> |
b17231c6 | 33 | #include <common/compat/socket.h> |
a4b92340 | 34 | #include <common/uri.h> |
ce2a9e76 | 35 | #include <common/defaults.h> |
ffe60014 | 36 | #include <common/compat/uuid.h> |
5e16da05 | 37 | |
6364a07a DG |
38 | #include <arpa/inet.h> |
39 | #include <netinet/in.h> | |
40 | #include <sys/un.h> | |
41 | ||
42 | #include "inet.h" | |
43 | #include "inet6.h" | |
0d37f2bc DG |
44 | #include "unix.h" |
45 | ||
fac6795d | 46 | /* Queue size of listen(2) */ |
f158a754 | 47 | #define LTTNG_SESSIOND_COMM_MAX_LISTEN 64 |
fac6795d | 48 | |
990570ed DG |
49 | /* Maximum number of FDs that can be sent over a Unix socket */ |
50 | #define LTTCOMM_MAX_SEND_FDS 4 | |
51 | ||
3817e7df DG |
52 | /* |
53 | * Get the error code index from 0 since LTTCOMM_OK start at 1000 | |
fac6795d | 54 | */ |
f73fabfd | 55 | #define LTTCOMM_ERR_INDEX(code) (code - LTTCOMM_CONSUMERD_COMMAND_SOCK_READY) |
fac6795d | 56 | |
6abb15de | 57 | enum lttcomm_sessiond_command { |
0d0c377a | 58 | /* Tracer command */ |
7c9534d6 JD |
59 | LTTNG_ADD_CONTEXT = 0, |
60 | LTTNG_CALIBRATE = 1, | |
61 | LTTNG_DISABLE_CHANNEL = 2, | |
62 | LTTNG_DISABLE_EVENT = 3, | |
63 | LTTNG_DISABLE_ALL_EVENT = 4, | |
64 | LTTNG_ENABLE_CHANNEL = 5, | |
65 | LTTNG_ENABLE_EVENT = 6, | |
66 | LTTNG_ENABLE_ALL_EVENT = 7, | |
0d0c377a | 67 | /* Session daemon command */ |
7c9534d6 JD |
68 | LTTNG_CREATE_SESSION = 8, |
69 | LTTNG_DESTROY_SESSION = 9, | |
70 | LTTNG_LIST_CHANNELS = 10, | |
71 | LTTNG_LIST_DOMAINS = 11, | |
72 | LTTNG_LIST_EVENTS = 12, | |
73 | LTTNG_LIST_SESSIONS = 13, | |
74 | LTTNG_LIST_TRACEPOINTS = 14, | |
75 | LTTNG_REGISTER_CONSUMER = 15, | |
76 | LTTNG_START_TRACE = 16, | |
77 | LTTNG_STOP_TRACE = 17, | |
78 | LTTNG_LIST_TRACEPOINT_FIELDS = 18, | |
53a80697 | 79 | |
de5e9086 | 80 | /* Consumer */ |
7c9534d6 JD |
81 | LTTNG_DISABLE_CONSUMER = 19, |
82 | LTTNG_ENABLE_CONSUMER = 20, | |
83 | LTTNG_SET_CONSUMER_URI = 21, | |
67676bd8 DG |
84 | /* 22 */ |
85 | /* 23 */ | |
7c9534d6 | 86 | LTTNG_DATA_PENDING = 24, |
da3c9ec1 DG |
87 | LTTNG_SNAPSHOT_ADD_OUTPUT = 25, |
88 | LTTNG_SNAPSHOT_DEL_OUTPUT = 26, | |
89 | LTTNG_SNAPSHOT_LIST_OUTPUT = 27, | |
90 | LTTNG_SNAPSHOT_RECORD = 28, | |
27babd3a | 91 | LTTNG_CREATE_SESSION_SNAPSHOT = 29, |
ecc48a90 | 92 | LTTNG_CREATE_SESSION_LIVE = 30, |
00c76cea | 93 | LTTNG_SAVE_SESSION = 31, |
7c9534d6 JD |
94 | }; |
95 | ||
96 | enum lttcomm_relayd_command { | |
97 | RELAYD_ADD_STREAM = 1, | |
98 | RELAYD_CREATE_SESSION = 2, | |
99 | RELAYD_START_DATA = 3, | |
100 | RELAYD_UPDATE_SYNC_INFO = 4, | |
101 | RELAYD_VERSION = 5, | |
102 | RELAYD_SEND_METADATA = 6, | |
103 | RELAYD_CLOSE_STREAM = 7, | |
104 | RELAYD_DATA_PENDING = 8, | |
105 | RELAYD_QUIESCENT_CONTROL = 9, | |
106 | RELAYD_BEGIN_DATA_PENDING = 10, | |
107 | RELAYD_END_DATA_PENDING = 11, | |
1c20f0e2 JD |
108 | RELAYD_ADD_INDEX = 12, |
109 | RELAYD_SEND_INDEX = 13, | |
110 | RELAYD_CLOSE_INDEX = 14, | |
a4baae1b | 111 | /* Live-reading commands (2.4+). */ |
d3e2ba59 | 112 | RELAYD_LIST_SESSIONS = 15, |
a4baae1b JD |
113 | /* All streams of the channel have been sent to the relayd (2.4+). */ |
114 | RELAYD_STREAMS_SENT = 16, | |
fac6795d DG |
115 | }; |
116 | ||
117 | /* | |
118 | * lttcomm error code. | |
119 | */ | |
120 | enum lttcomm_return_code { | |
0c759fc9 | 121 | LTTCOMM_CONSUMERD_SUCCESS = 0, /* Everything went fine. */ |
f73fabfd DG |
122 | LTTCOMM_CONSUMERD_COMMAND_SOCK_READY = 1, /* Command socket ready */ |
123 | LTTCOMM_CONSUMERD_SUCCESS_RECV_FD, /* Success on receiving fds */ | |
124 | LTTCOMM_CONSUMERD_ERROR_RECV_FD, /* Error on receiving fds */ | |
125 | LTTCOMM_CONSUMERD_ERROR_RECV_CMD, /* Error on receiving command */ | |
126 | LTTCOMM_CONSUMERD_POLL_ERROR, /* Error in polling thread */ | |
127 | LTTCOMM_CONSUMERD_POLL_NVAL, /* Poll on closed fd */ | |
128 | LTTCOMM_CONSUMERD_POLL_HUP, /* All fds have hungup */ | |
129 | LTTCOMM_CONSUMERD_EXIT_SUCCESS, /* Consumerd exiting normally */ | |
130 | LTTCOMM_CONSUMERD_EXIT_FAILURE, /* Consumerd exiting on error */ | |
131 | LTTCOMM_CONSUMERD_OUTFD_ERROR, /* Error opening the tracefile */ | |
132 | LTTCOMM_CONSUMERD_SPLICE_EBADF, /* EBADF from splice(2) */ | |
133 | LTTCOMM_CONSUMERD_SPLICE_EINVAL, /* EINVAL from splice(2) */ | |
134 | LTTCOMM_CONSUMERD_SPLICE_ENOMEM, /* ENOMEM from splice(2) */ | |
135 | LTTCOMM_CONSUMERD_SPLICE_ESPIPE, /* ESPIPE from splice(2) */ | |
ffe60014 | 136 | LTTCOMM_CONSUMERD_ENOMEM, /* Consumer is out of memory */ |
d88aee68 DG |
137 | LTTCOMM_CONSUMERD_ERROR_METADATA, /* Error with metadata. */ |
138 | LTTCOMM_CONSUMERD_FATAL, /* Fatal error. */ | |
618a6a28 | 139 | LTTCOMM_CONSUMERD_RELAYD_FAIL, /* Error on remote relayd */ |
0c759fc9 | 140 | LTTCOMM_CONSUMERD_CHANNEL_FAIL, /* Channel creation failed. */ |
80e327fa | 141 | |
20fe2104 DG |
142 | /* MUST be last element */ |
143 | LTTCOMM_NR, /* Last element */ | |
fac6795d DG |
144 | }; |
145 | ||
de5e9086 DG |
146 | /* lttng socket protocol. */ |
147 | enum lttcomm_sock_proto { | |
148 | LTTCOMM_SOCK_UDP, | |
149 | LTTCOMM_SOCK_TCP, | |
150 | }; | |
151 | ||
152 | /* | |
153 | * Index in the net_families array below. Please keep in sync! | |
154 | */ | |
155 | enum lttcomm_sock_domain { | |
01d0a631 CB |
156 | LTTCOMM_INET = 0, |
157 | LTTCOMM_INET6 = 1, | |
de5e9086 DG |
158 | }; |
159 | ||
331744e3 JD |
160 | enum lttcomm_metadata_command { |
161 | LTTCOMM_METADATA_REQUEST = 1, | |
162 | }; | |
163 | ||
164 | /* | |
165 | * Commands sent from the consumerd to the sessiond to request if new metadata | |
166 | * is available. This message is used to find the per UID _or_ per PID registry | |
167 | * for the channel key. For per UID lookup, the triplet | |
168 | * bits_per_long/uid/session_id is used. On lookup failure, we search for the | |
169 | * per PID registry indexed by session id ignoring the other values. | |
170 | */ | |
171 | struct lttcomm_metadata_request_msg { | |
1950109e JD |
172 | uint64_t session_id; /* Tracing session id */ |
173 | uint64_t session_id_per_pid; /* Tracing session id for per-pid */ | |
331744e3 JD |
174 | uint32_t bits_per_long; /* Consumer ABI */ |
175 | uint32_t uid; | |
176 | uint64_t key; /* Metadata channel key. */ | |
177 | } LTTNG_PACKED; | |
178 | ||
de5e9086 DG |
179 | struct lttcomm_sockaddr { |
180 | enum lttcomm_sock_domain type; | |
181 | union { | |
182 | struct sockaddr_in sin; | |
183 | struct sockaddr_in6 sin6; | |
184 | } addr; | |
fc5e05b7 | 185 | } LTTNG_PACKED; |
de5e9086 DG |
186 | |
187 | struct lttcomm_sock { | |
d88aee68 | 188 | int32_t fd; |
de5e9086 DG |
189 | enum lttcomm_sock_proto proto; |
190 | struct lttcomm_sockaddr sockaddr; | |
191 | const struct lttcomm_proto_ops *ops; | |
fc5e05b7 | 192 | } LTTNG_PACKED; |
de5e9086 | 193 | |
6151a90f JD |
194 | /* |
195 | * Relayd sock. Adds the protocol version to use for the communications with | |
196 | * the relayd. | |
197 | */ | |
198 | struct lttcomm_relayd_sock { | |
199 | struct lttcomm_sock sock; | |
200 | uint32_t major; | |
201 | uint32_t minor; | |
202 | } LTTNG_PACKED; | |
203 | ||
de5e9086 DG |
204 | struct lttcomm_net_family { |
205 | int family; | |
206 | int (*create) (struct lttcomm_sock *sock, int type, int proto); | |
207 | }; | |
208 | ||
209 | struct lttcomm_proto_ops { | |
210 | int (*bind) (struct lttcomm_sock *sock); | |
211 | int (*close) (struct lttcomm_sock *sock); | |
212 | int (*connect) (struct lttcomm_sock *sock); | |
213 | struct lttcomm_sock *(*accept) (struct lttcomm_sock *sock); | |
214 | int (*listen) (struct lttcomm_sock *sock, int backlog); | |
215 | ssize_t (*recvmsg) (struct lttcomm_sock *sock, void *buf, size_t len, | |
216 | int flags); | |
217 | ssize_t (*sendmsg) (struct lttcomm_sock *sock, void *buf, size_t len, | |
218 | int flags); | |
219 | }; | |
220 | ||
fac6795d | 221 | /* |
9bda164d | 222 | * Data structure received from lttng client to session daemon. |
fac6795d DG |
223 | */ |
224 | struct lttcomm_session_msg { | |
d0b96690 | 225 | uint32_t cmd_type; /* enum lttcomm_sessiond_command */ |
42abccdb | 226 | struct lttng_session session; |
9f19cc17 | 227 | struct lttng_domain domain; |
fac6795d DG |
228 | union { |
229 | struct { | |
db8870ed | 230 | char channel_name[LTTNG_SYMBOL_NAME_LEN]; |
f3ed775e | 231 | char name[NAME_MAX]; |
fc5e05b7 | 232 | } LTTNG_PACKED disable; |
f3ed775e | 233 | /* Event data */ |
fac6795d | 234 | struct { |
db8870ed | 235 | char channel_name[LTTNG_SYMBOL_NAME_LEN]; |
1179a48f | 236 | struct lttng_event event LTTNG_PACKED; |
6b453b5e JG |
237 | /* Length of following filter expression. */ |
238 | uint32_t expression_len; | |
025faf73 DG |
239 | /* Length of following bytecode for filter. */ |
240 | uint32_t bytecode_len; | |
a5516688 JI |
241 | /* exclusion data */ |
242 | uint32_t exclusion_count; | |
243 | /* | |
244 | * After this structure, the following variable-length | |
245 | * items are transmitted: | |
246 | * - char exclusion_names[LTTNG_SYMBOL_NAME_LEN][exclusion_count] | |
6b453b5e | 247 | * - unsigned char filter_expression[expression_len] |
a5516688 JI |
248 | * - unsigned char filter_bytecode[bytecode_len] |
249 | */ | |
fc5e05b7 | 250 | } LTTNG_PACKED enable; |
f3ed775e DG |
251 | /* Create channel */ |
252 | struct { | |
1179a48f | 253 | struct lttng_channel chan LTTNG_PACKED; |
fc5e05b7 | 254 | } LTTNG_PACKED channel; |
d65106b1 DG |
255 | /* Context */ |
256 | struct { | |
db8870ed | 257 | char channel_name[LTTNG_SYMBOL_NAME_LEN]; |
1179a48f | 258 | struct lttng_event_context ctx LTTNG_PACKED; |
fc5e05b7 | 259 | } LTTNG_PACKED context; |
d9800920 DG |
260 | /* Use by register_consumer */ |
261 | struct { | |
262 | char path[PATH_MAX]; | |
fc5e05b7 | 263 | } LTTNG_PACKED reg; |
9f19cc17 DG |
264 | /* List */ |
265 | struct { | |
db8870ed | 266 | char channel_name[LTTNG_SYMBOL_NAME_LEN]; |
fc5e05b7 | 267 | } LTTNG_PACKED list; |
d0254c7c | 268 | struct lttng_calibrate calibrate; |
a4b92340 | 269 | /* Used by the set_consumer_url and used by create_session also call */ |
de5e9086 | 270 | struct { |
a4b92340 DG |
271 | /* Number of lttng_uri following */ |
272 | uint32_t size; | |
fc5e05b7 | 273 | } LTTNG_PACKED uri; |
da3c9ec1 | 274 | struct { |
1179a48f | 275 | struct lttng_snapshot_output output LTTNG_PACKED; |
da3c9ec1 DG |
276 | } LTTNG_PACKED snapshot_output; |
277 | struct { | |
278 | uint32_t wait; | |
1179a48f | 279 | struct lttng_snapshot_output output LTTNG_PACKED; |
da3c9ec1 | 280 | } LTTNG_PACKED snapshot_record; |
ecc48a90 JD |
281 | struct { |
282 | uint32_t nb_uri; | |
283 | unsigned int timer_interval; /* usec */ | |
284 | } LTTNG_PACKED session_live; | |
00c76cea | 285 | struct { |
1179a48f | 286 | struct lttng_save_session_attr attr; /* struct already packed */ |
00c76cea | 287 | } LTTNG_PACKED save_session; |
fac6795d | 288 | } u; |
fc5e05b7 | 289 | } LTTNG_PACKED; |
fac6795d | 290 | |
d93c4f1f | 291 | #define LTTNG_FILTER_MAX_LEN 65536 |
53a80697 MD |
292 | |
293 | /* | |
294 | * Filter bytecode data. The reloc table is located at the end of the | |
295 | * bytecode. It is made of tuples: (uint16_t, var. len. string). It | |
296 | * starts at reloc_table_offset. | |
297 | */ | |
b6bbed5f | 298 | #define LTTNG_FILTER_PADDING 32 |
53a80697 | 299 | struct lttng_filter_bytecode { |
d93c4f1f CB |
300 | uint32_t len; /* len of data */ |
301 | uint32_t reloc_table_offset; | |
f3f0db50 | 302 | uint64_t seqnum; |
b6bbed5f | 303 | char padding[LTTNG_FILTER_PADDING]; |
53a80697 | 304 | char data[0]; |
fc5e05b7 | 305 | } LTTNG_PACKED; |
53a80697 | 306 | |
579640f9 JI |
307 | /* |
308 | * Event exclusion data. At the end of the structure, there will actually | |
309 | * by zero or more names, where the actual number of names is given by | |
310 | * the 'count' item of the structure. | |
311 | */ | |
312 | #define LTTNG_EVENT_EXCLUSION_PADDING 32 | |
313 | struct lttng_event_exclusion { | |
314 | uint32_t count; | |
315 | char padding[LTTNG_EVENT_EXCLUSION_PADDING]; | |
316 | char names[LTTNG_SYMBOL_NAME_LEN][0]; | |
317 | } LTTNG_PACKED; | |
318 | ||
fac6795d | 319 | /* |
5e16da05 | 320 | * Data structure for the response from sessiond to the lttng client. |
fac6795d | 321 | */ |
5461b305 | 322 | struct lttcomm_lttng_msg { |
d0b96690 DG |
323 | uint32_t cmd_type; /* enum lttcomm_sessiond_command */ |
324 | uint32_t ret_code; /* enum lttcomm_return_code */ | |
325 | uint32_t pid; /* pid_t */ | |
773168b7 | 326 | uint32_t data_size; |
5461b305 DG |
327 | /* Contains: trace_name + data */ |
328 | char payload[]; | |
fc5e05b7 | 329 | } LTTNG_PACKED; |
fac6795d | 330 | |
da3c9ec1 DG |
331 | struct lttcomm_lttng_output_id { |
332 | uint32_t id; | |
333 | } LTTNG_PACKED; | |
334 | ||
6e3805e2 | 335 | /* |
3bd1e081 MD |
336 | * lttcomm_consumer_msg is the message sent from sessiond to consumerd |
337 | * to either add a channel, add a stream, update a stream, or stop | |
338 | * operation. | |
6e3805e2 | 339 | */ |
3bd1e081 MD |
340 | struct lttcomm_consumer_msg { |
341 | uint32_t cmd_type; /* enum consumerd_command */ | |
342 | union { | |
343 | struct { | |
d88aee68 | 344 | uint64_t channel_key; |
ffe60014 DG |
345 | uint64_t session_id; |
346 | char pathname[PATH_MAX]; | |
d88aee68 DG |
347 | uint32_t uid; |
348 | uint32_t gid; | |
349 | uint64_t relayd_id; | |
c30aaa51 | 350 | /* nb_init_streams is the number of streams open initially. */ |
d88aee68 | 351 | uint32_t nb_init_streams; |
de5e9086 | 352 | char name[LTTNG_SYMBOL_NAME_LEN]; |
ffe60014 DG |
353 | /* Use splice or mmap to consume this fd */ |
354 | enum lttng_event_output output; | |
355 | int type; /* Per cpu or metadata. */ | |
1624d5b7 JD |
356 | uint64_t tracefile_size; /* bytes */ |
357 | uint32_t tracefile_count; /* number of tracefiles */ | |
2bba9e53 DG |
358 | /* If the channel's streams have to be monitored or not. */ |
359 | uint32_t monitor; | |
ecc48a90 JD |
360 | /* timer to check the streams usage in live mode (usec). */ |
361 | unsigned int live_timer_interval; | |
ffe60014 | 362 | } LTTNG_PACKED channel; /* Only used by Kernel. */ |
3bd1e081 | 363 | struct { |
d88aee68 DG |
364 | uint64_t stream_key; |
365 | uint64_t channel_key; | |
366 | int32_t cpu; /* On which CPU this stream is assigned. */ | |
6dc3064a DG |
367 | /* Tells the consumer if the stream should be or not monitored. */ |
368 | uint32_t no_monitor; | |
ffe60014 | 369 | } LTTNG_PACKED stream; /* Only used by Kernel. */ |
de5e9086 | 370 | struct { |
d88aee68 | 371 | uint64_t net_index; |
de5e9086 DG |
372 | enum lttng_stream_type type; |
373 | /* Open socket to the relayd */ | |
6151a90f | 374 | struct lttcomm_relayd_sock sock; |
46e6455f DG |
375 | /* Tracing session id associated to the relayd. */ |
376 | uint64_t session_id; | |
d3e2ba59 JD |
377 | /* Relayd session id, only used with control socket. */ |
378 | uint64_t relayd_session_id; | |
fc5e05b7 | 379 | } LTTNG_PACKED relayd_sock; |
173af62f DG |
380 | struct { |
381 | uint64_t net_seq_idx; | |
fc5e05b7 | 382 | } LTTNG_PACKED destroy_relayd; |
53632229 DG |
383 | struct { |
384 | uint64_t session_id; | |
fc5e05b7 | 385 | } LTTNG_PACKED data_pending; |
ffe60014 | 386 | struct { |
d0b96690 DG |
387 | uint64_t subbuf_size; /* bytes */ |
388 | uint64_t num_subbuf; /* power of 2 */ | |
d88aee68 DG |
389 | int32_t overwrite; /* 1: overwrite, 0: discard */ |
390 | uint32_t switch_timer_interval; /* usec */ | |
391 | uint32_t read_timer_interval; /* usec */ | |
ecc48a90 | 392 | unsigned int live_timer_interval; /* usec */ |
d88aee68 DG |
393 | int32_t output; /* splice, mmap */ |
394 | int32_t type; /* metadata or per_cpu */ | |
d0b96690 DG |
395 | uint64_t session_id; /* Tracing session id */ |
396 | char pathname[PATH_MAX]; /* Channel file path. */ | |
ffe60014 | 397 | char name[LTTNG_SYMBOL_NAME_LEN]; /* Channel name. */ |
d88aee68 DG |
398 | uint32_t uid; /* User ID of the session */ |
399 | uint32_t gid; /* Group ID ot the session */ | |
400 | uint64_t relayd_id; /* Relayd id if apply. */ | |
401 | uint64_t key; /* Unique channel key. */ | |
b6d38284 | 402 | unsigned char uuid[UUID_LEN]; /* uuid for ust tracer. */ |
7972aab2 | 403 | uint32_t chan_id; /* Channel ID on the tracer side. */ |
1624d5b7 JD |
404 | uint64_t tracefile_size; /* bytes */ |
405 | uint32_t tracefile_count; /* number of tracefiles */ | |
1950109e | 406 | uint64_t session_id_per_pid; /* Per-pid session ID. */ |
2bba9e53 DG |
407 | /* Tells the consumer if the stream should be or not monitored. */ |
408 | uint32_t monitor; | |
567eb353 DG |
409 | /* |
410 | * For UST per UID buffers, this is the application UID of the | |
411 | * channel. This can be different from the user UID requesting the | |
412 | * channel creation and used for the rights on the stream file | |
413 | * because the application can be in the tracing for instance. | |
414 | */ | |
415 | uint32_t ust_app_uid; | |
ffe60014 DG |
416 | } LTTNG_PACKED ask_channel; |
417 | struct { | |
d88aee68 | 418 | uint64_t key; |
ffe60014 DG |
419 | } LTTNG_PACKED get_channel; |
420 | struct { | |
d88aee68 | 421 | uint64_t key; |
ffe60014 | 422 | } LTTNG_PACKED destroy_channel; |
d88aee68 DG |
423 | struct { |
424 | uint64_t key; /* Metadata channel key. */ | |
425 | uint64_t target_offset; /* Offset in the consumer */ | |
426 | uint64_t len; /* Length of metadata to be received. */ | |
427 | } LTTNG_PACKED push_metadata; | |
428 | struct { | |
429 | uint64_t key; /* Metadata channel key. */ | |
430 | } LTTNG_PACKED close_metadata; | |
431 | struct { | |
432 | uint64_t key; /* Metadata channel key. */ | |
433 | } LTTNG_PACKED setup_metadata; | |
7972aab2 DG |
434 | struct { |
435 | uint64_t key; /* Channel key. */ | |
436 | } LTTNG_PACKED flush_channel; | |
6dc3064a DG |
437 | struct { |
438 | char pathname[PATH_MAX]; | |
439 | /* Indicate if the snapshot goes on the relayd or locally. */ | |
440 | uint32_t use_relayd; | |
441 | uint32_t metadata; /* This a metadata snapshot. */ | |
442 | uint64_t relayd_id; /* Relayd id if apply. */ | |
443 | uint64_t key; | |
5c786ded | 444 | uint64_t max_stream_size; |
6dc3064a | 445 | } LTTNG_PACKED snapshot_channel; |
a4baae1b JD |
446 | struct { |
447 | uint64_t channel_key; | |
448 | uint64_t net_seq_idx; | |
449 | } LTTNG_PACKED sent_streams; | |
3bd1e081 | 450 | } u; |
fc5e05b7 | 451 | } LTTNG_PACKED; |
6e3805e2 | 452 | |
f50f23d9 DG |
453 | /* |
454 | * Status message returned to the sessiond after a received command. | |
455 | */ | |
456 | struct lttcomm_consumer_status_msg { | |
0c759fc9 | 457 | enum lttcomm_return_code ret_code; |
fc5e05b7 | 458 | } LTTNG_PACKED; |
f50f23d9 | 459 | |
ffe60014 | 460 | struct lttcomm_consumer_status_channel { |
0c759fc9 | 461 | enum lttcomm_return_code ret_code; |
d88aee68 | 462 | uint64_t key; |
ffe60014 DG |
463 | unsigned int stream_count; |
464 | } LTTNG_PACKED; | |
465 | ||
74d0b642 | 466 | #ifdef HAVE_LIBLTTNG_UST_CTL |
3bd1e081 | 467 | |
9df8df5e | 468 | #include <lttng/ust-abi.h> |
6e3805e2 | 469 | |
3817e7df DG |
470 | /* |
471 | * Data structure for the commands sent from sessiond to UST. | |
472 | */ | |
473 | struct lttcomm_ust_msg { | |
3817e7df DG |
474 | uint32_t handle; |
475 | uint32_t cmd; | |
476 | union { | |
3817e7df | 477 | struct lttng_ust_channel channel; |
00a17c97 | 478 | struct lttng_ust_stream stream; |
3817e7df DG |
479 | struct lttng_ust_event event; |
480 | struct lttng_ust_context context; | |
00a17c97 | 481 | struct lttng_ust_tracer_version version; |
3817e7df | 482 | } u; |
fc5e05b7 | 483 | } LTTNG_PACKED; |
3817e7df DG |
484 | |
485 | /* | |
486 | * Data structure for the response from UST to the session daemon. | |
487 | * cmd_type is sent back in the reply for validation. | |
488 | */ | |
489 | struct lttcomm_ust_reply { | |
490 | uint32_t handle; | |
491 | uint32_t cmd; | |
492 | uint32_t ret_code; /* enum lttcomm_return_code */ | |
493 | uint32_t ret_val; /* return value */ | |
494 | union { | |
2b0bf864 DG |
495 | struct { |
496 | uint64_t memory_map_size; | |
fc5e05b7 | 497 | } LTTNG_PACKED channel; |
2b0bf864 DG |
498 | struct { |
499 | uint64_t memory_map_size; | |
fc5e05b7 | 500 | } LTTNG_PACKED stream; |
00a17c97 | 501 | struct lttng_ust_tracer_version version; |
3817e7df | 502 | } u; |
fc5e05b7 | 503 | } LTTNG_PACKED; |
3817e7df | 504 | |
74d0b642 | 505 | #endif /* HAVE_LIBLTTNG_UST_CTL */ |
3bd1e081 | 506 | |
fac6795d DG |
507 | extern const char *lttcomm_get_readable_code(enum lttcomm_return_code code); |
508 | ||
6364a07a DG |
509 | extern int lttcomm_init_inet_sockaddr(struct lttcomm_sockaddr *sockaddr, |
510 | const char *ip, unsigned int port); | |
511 | extern int lttcomm_init_inet6_sockaddr(struct lttcomm_sockaddr *sockaddr, | |
512 | const char *ip, unsigned int port); | |
513 | ||
de5e9086 DG |
514 | extern struct lttcomm_sock *lttcomm_alloc_sock(enum lttcomm_sock_proto proto); |
515 | extern int lttcomm_create_sock(struct lttcomm_sock *sock); | |
516 | extern struct lttcomm_sock *lttcomm_alloc_sock_from_uri(struct lttng_uri *uri); | |
517 | extern void lttcomm_destroy_sock(struct lttcomm_sock *sock); | |
518 | extern struct lttcomm_sock *lttcomm_alloc_copy_sock(struct lttcomm_sock *src); | |
519 | extern void lttcomm_copy_sock(struct lttcomm_sock *dst, | |
520 | struct lttcomm_sock *src); | |
6364a07a | 521 | |
6151a90f JD |
522 | /* Relayd socket object. */ |
523 | extern struct lttcomm_relayd_sock *lttcomm_alloc_relayd_sock( | |
524 | struct lttng_uri *uri, uint32_t major, uint32_t minor); | |
525 | ||
783a3b9a MD |
526 | extern int lttcomm_setsockopt_rcv_timeout(int sock, unsigned int msec); |
527 | extern int lttcomm_setsockopt_snd_timeout(int sock, unsigned int msec); | |
528 | ||
554831e7 MD |
529 | extern void lttcomm_init(void); |
530 | /* Get network timeout, in milliseconds */ | |
531 | extern unsigned long lttcomm_get_network_timeout(void); | |
532 | ||
773168b7 | 533 | #endif /* _LTTNG_SESSIOND_COMM_H */ |