Fix: create_output_path() relayd util is not const-correct
[lttng-tools.git] / src / common / sessiond-comm / sessiond-comm.h
1 /*
2 * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
3 * Julien Desfossez <julien.desfossez@polymtl.ca>
4 * Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
5 *
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.
9 *
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
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 * more details.
14 *
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.
18 */
19
20 /*
21 * This header is meant for liblttng and libust internal use ONLY. These
22 * declarations should NOT be considered stable API.
23 */
24
25 #ifndef _LTTNG_SESSIOND_COMM_H
26 #define _LTTNG_SESSIOND_COMM_H
27
28 #include <limits.h>
29 #include <lttng/lttng.h>
30 #include <lttng/snapshot-internal.h>
31 #include <lttng/save-internal.h>
32 #include <lttng/channel-internal.h>
33 #include <lttng/trigger/trigger-internal.h>
34 #include <common/compat/socket.h>
35 #include <common/uri.h>
36 #include <common/defaults.h>
37 #include <common/compat/uuid.h>
38
39 #include <arpa/inet.h>
40 #include <netinet/in.h>
41 #include <sys/un.h>
42
43 #include "inet.h"
44 #include "inet6.h"
45 #include <common/unix.h>
46
47 /* Queue size of listen(2) */
48 #define LTTNG_SESSIOND_COMM_MAX_LISTEN 64
49
50 /* Maximum number of FDs that can be sent over a Unix socket */
51 #define LTTCOMM_MAX_SEND_FDS 4
52
53 /*
54 * Get the error code index from 0 since LTTCOMM_OK start at 1000
55 */
56 #define LTTCOMM_ERR_INDEX(code) (code - LTTCOMM_CONSUMERD_COMMAND_SOCK_READY)
57
58 enum lttcomm_sessiond_command {
59 /* Tracer command */
60 LTTNG_ADD_CONTEXT = 0,
61 /* LTTNG_CALIBRATE used to be here */
62 LTTNG_DISABLE_CHANNEL = 2,
63 LTTNG_DISABLE_EVENT = 3,
64 LTTNG_LIST_SYSCALLS = 4,
65 LTTNG_ENABLE_CHANNEL = 5,
66 LTTNG_ENABLE_EVENT = 6,
67 /* 7 */
68 /* Session daemon command */
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,
80
81 /* Consumer */
82 LTTNG_DISABLE_CONSUMER = 19,
83 LTTNG_ENABLE_CONSUMER = 20,
84 LTTNG_SET_CONSUMER_URI = 21,
85 /* 22 */
86 /* 23 */
87 LTTNG_DATA_PENDING = 24,
88 LTTNG_SNAPSHOT_ADD_OUTPUT = 25,
89 LTTNG_SNAPSHOT_DEL_OUTPUT = 26,
90 LTTNG_SNAPSHOT_LIST_OUTPUT = 27,
91 LTTNG_SNAPSHOT_RECORD = 28,
92 LTTNG_CREATE_SESSION_SNAPSHOT = 29,
93 LTTNG_CREATE_SESSION_LIVE = 30,
94 LTTNG_SAVE_SESSION = 31,
95 LTTNG_TRACK_PID = 32,
96 LTTNG_UNTRACK_PID = 33,
97 LTTNG_LIST_TRACKER_PIDS = 34,
98 LTTNG_SET_SESSION_SHM_PATH = 40,
99 LTTNG_REGENERATE_METADATA = 41,
100 LTTNG_REGENERATE_STATEDUMP = 42,
101 LTTNG_REGISTER_TRIGGER = 43,
102 LTTNG_UNREGISTER_TRIGGER = 44,
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,
117 RELAYD_ADD_INDEX = 12,
118 RELAYD_SEND_INDEX = 13,
119 RELAYD_CLOSE_INDEX = 14,
120 /* Live-reading commands (2.4+). */
121 RELAYD_LIST_SESSIONS = 15,
122 /* All streams of the channel have been sent to the relayd (2.4+). */
123 RELAYD_STREAMS_SENT = 16,
124 /* Ask the relay to reset the metadata trace file (2.8+) */
125 RELAYD_RESET_METADATA = 17,
126 /* Create a folder on the relayd FS (2.11+) */
127 RELAYD_MKDIR = 21,
128 };
129
130 /*
131 * lttcomm error code.
132 */
133 enum lttcomm_return_code {
134 LTTCOMM_CONSUMERD_SUCCESS = 0, /* Everything went fine. */
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) */
149 LTTCOMM_CONSUMERD_ENOMEM, /* Consumer is out of memory */
150 LTTCOMM_CONSUMERD_ERROR_METADATA, /* Error with metadata. */
151 LTTCOMM_CONSUMERD_FATAL, /* Fatal error. */
152 LTTCOMM_CONSUMERD_RELAYD_FAIL, /* Error on remote relayd */
153 LTTCOMM_CONSUMERD_CHANNEL_FAIL, /* Channel creation failed. */
154 LTTCOMM_CONSUMERD_CHAN_NOT_FOUND, /* Channel not found. */
155 LTTCOMM_CONSUMERD_ALREADY_SET, /* Resource already set. */
156
157 /* MUST be last element */
158 LTTCOMM_NR, /* Last element */
159 };
160
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 {
171 LTTCOMM_INET = 0,
172 LTTCOMM_INET6 = 1,
173 };
174
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 {
187 uint64_t session_id; /* Tracing session id */
188 uint64_t session_id_per_pid; /* Tracing session id for per-pid */
189 uint32_t bits_per_long; /* Consumer ABI */
190 uint32_t uid;
191 uint64_t key; /* Metadata channel key. */
192 } LTTNG_PACKED;
193
194 struct lttcomm_sockaddr {
195 enum lttcomm_sock_domain type;
196 union {
197 struct sockaddr_in sin;
198 struct sockaddr_in6 sin6;
199 } addr;
200 } LTTNG_PACKED;
201
202 struct lttcomm_sock {
203 int32_t fd;
204 enum lttcomm_sock_proto proto;
205 struct lttcomm_sockaddr sockaddr;
206 const struct lttcomm_proto_ops *ops;
207 } LTTNG_PACKED;
208
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
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);
232 ssize_t (*sendmsg) (struct lttcomm_sock *sock, const void *buf,
233 size_t len, int flags);
234 };
235
236 /*
237 * Data structure received from lttng client to session daemon.
238 */
239 struct lttcomm_session_msg {
240 uint32_t cmd_type; /* enum lttcomm_sessiond_command */
241 struct lttng_session session;
242 struct lttng_domain domain;
243 union {
244 /* Event data */
245 struct {
246 char channel_name[LTTNG_SYMBOL_NAME_LEN];
247 struct lttng_event event LTTNG_PACKED;
248 /* Length of following filter expression. */
249 uint32_t expression_len;
250 /* Length of following bytecode for filter. */
251 uint32_t bytecode_len;
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]
258 * - unsigned char filter_expression[expression_len]
259 * - unsigned char filter_bytecode[bytecode_len]
260 */
261 } LTTNG_PACKED enable;
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;
276 /* Create channel */
277 struct {
278 struct lttng_channel chan LTTNG_PACKED;
279 /* struct lttng_channel_extended is already packed. */
280 struct lttng_channel_extended extended;
281 } LTTNG_PACKED channel;
282 /* Context */
283 struct {
284 char channel_name[LTTNG_SYMBOL_NAME_LEN];
285 struct lttng_event_context ctx LTTNG_PACKED;
286 uint32_t provider_name_len;
287 uint32_t context_name_len;
288 } LTTNG_PACKED context;
289 /* Use by register_consumer */
290 struct {
291 char path[PATH_MAX];
292 } LTTNG_PACKED reg;
293 /* List */
294 struct {
295 char channel_name[LTTNG_SYMBOL_NAME_LEN];
296 } LTTNG_PACKED list;
297 struct lttng_calibrate calibrate;
298 /* Used by the set_consumer_url and used by create_session also call */
299 struct {
300 /* Number of lttng_uri following */
301 uint32_t size;
302 } LTTNG_PACKED uri;
303 struct {
304 struct lttng_snapshot_output output LTTNG_PACKED;
305 } LTTNG_PACKED snapshot_output;
306 struct {
307 uint32_t wait;
308 struct lttng_snapshot_output output LTTNG_PACKED;
309 } LTTNG_PACKED snapshot_record;
310 struct {
311 uint32_t nb_uri;
312 unsigned int timer_interval; /* usec */
313 } LTTNG_PACKED session_live;
314 struct {
315 struct lttng_save_session_attr attr; /* struct already packed */
316 } LTTNG_PACKED save_session;
317 struct {
318 char shm_path[PATH_MAX];
319 } LTTNG_PACKED set_shm_path;
320 struct {
321 uint32_t pid;
322 } LTTNG_PACKED pid_tracker;
323 struct {
324 uint32_t length;
325 } LTTNG_PACKED trigger;
326 } u;
327 } LTTNG_PACKED;
328
329 #define LTTNG_FILTER_MAX_LEN 65536
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 */
336 #define LTTNG_FILTER_PADDING 32
337 struct lttng_filter_bytecode {
338 uint32_t len; /* len of data */
339 uint32_t reloc_table_offset;
340 uint64_t seqnum;
341 char padding[LTTNG_FILTER_PADDING];
342 char data[0];
343 } LTTNG_PACKED;
344
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];
354 char names[0][LTTNG_SYMBOL_NAME_LEN];
355 } LTTNG_PACKED;
356
357 #define LTTNG_EVENT_EXCLUSION_NAME_AT(_exclusion, _i) \
358 (&(_exclusion)->names[_i][0])
359
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;
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;
386 } LTTNG_PACKED;
387
388 /*
389 * Data structure for the response from sessiond to the lttng client.
390 */
391 struct lttcomm_lttng_msg {
392 uint32_t cmd_type; /* enum lttcomm_sessiond_command */
393 uint32_t ret_code; /* enum lttcomm_return_code */
394 uint32_t pid; /* pid_t */
395 uint32_t cmd_header_size;
396 uint32_t data_size;
397 } LTTNG_PACKED;
398
399 struct lttcomm_lttng_output_id {
400 uint32_t id;
401 } LTTNG_PACKED;
402
403 /*
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.
407 */
408 struct lttcomm_consumer_msg {
409 uint32_t cmd_type; /* enum consumerd_command */
410 union {
411 struct {
412 uint64_t channel_key;
413 uint64_t session_id;
414 char pathname[PATH_MAX];
415 uint32_t uid;
416 uint32_t gid;
417 uint64_t relayd_id;
418 /* nb_init_streams is the number of streams open initially. */
419 uint32_t nb_init_streams;
420 char name[LTTNG_SYMBOL_NAME_LEN];
421 /* Use splice or mmap to consume this fd */
422 enum lttng_event_output output;
423 int type; /* Per cpu or metadata. */
424 uint64_t tracefile_size; /* bytes */
425 uint32_t tracefile_count; /* number of tracefiles */
426 /* If the channel's streams have to be monitored or not. */
427 uint32_t monitor;
428 /* timer to check the streams usage in live mode (usec). */
429 unsigned int live_timer_interval;
430 /* timer to sample a channel's positions (usec). */
431 unsigned int monitor_timer_interval;
432 } LTTNG_PACKED channel; /* Only used by Kernel. */
433 struct {
434 uint64_t stream_key;
435 uint64_t channel_key;
436 int32_t cpu; /* On which CPU this stream is assigned. */
437 /* Tells the consumer if the stream should be or not monitored. */
438 uint32_t no_monitor;
439 } LTTNG_PACKED stream; /* Only used by Kernel. */
440 struct {
441 uint64_t net_index;
442 enum lttng_stream_type type;
443 /* Open socket to the relayd */
444 struct lttcomm_relayd_sock sock;
445 /* Tracing session id associated to the relayd. */
446 uint64_t session_id;
447 /* Relayd session id, only used with control socket. */
448 uint64_t relayd_session_id;
449 } LTTNG_PACKED relayd_sock;
450 struct {
451 uint64_t net_seq_idx;
452 } LTTNG_PACKED destroy_relayd;
453 struct {
454 uint64_t session_id;
455 } LTTNG_PACKED data_pending;
456 struct {
457 uint64_t subbuf_size; /* bytes */
458 uint64_t num_subbuf; /* power of 2 */
459 int32_t overwrite; /* 1: overwrite, 0: discard */
460 uint32_t switch_timer_interval; /* usec */
461 uint32_t read_timer_interval; /* usec */
462 unsigned int live_timer_interval; /* usec */
463 uint32_t monitor_timer_interval; /* usec */
464 int32_t output; /* splice, mmap */
465 int32_t type; /* metadata or per_cpu */
466 uint64_t session_id; /* Tracing session id */
467 char pathname[PATH_MAX]; /* Channel file path. */
468 char name[LTTNG_SYMBOL_NAME_LEN]; /* Channel name. */
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. */
473 unsigned char uuid[UUID_LEN]; /* uuid for ust tracer. */
474 uint32_t chan_id; /* Channel ID on the tracer side. */
475 uint64_t tracefile_size; /* bytes */
476 uint32_t tracefile_count; /* number of tracefiles */
477 uint64_t session_id_per_pid; /* Per-pid session ID. */
478 /* Tells the consumer if the stream should be or not monitored. */
479 uint32_t monitor;
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;
487 int64_t blocking_timeout;
488 char root_shm_path[PATH_MAX];
489 char shm_path[PATH_MAX];
490 } LTTNG_PACKED ask_channel;
491 struct {
492 uint64_t key;
493 } LTTNG_PACKED get_channel;
494 struct {
495 uint64_t key;
496 } LTTNG_PACKED destroy_channel;
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. */
501 uint64_t version; /* Version of the metadata. */
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;
509 struct {
510 uint64_t key; /* Channel key. */
511 } LTTNG_PACKED flush_channel;
512 struct {
513 uint64_t key; /* Channel key. */
514 } LTTNG_PACKED clear_quiescent_channel;
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;
522 uint64_t nb_packets_per_stream;
523 } LTTNG_PACKED snapshot_channel;
524 struct {
525 uint64_t channel_key;
526 uint64_t net_seq_idx;
527 } LTTNG_PACKED sent_streams;
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;
536 struct {
537 uint64_t session_id;
538 } LTTNG_PACKED regenerate_metadata;
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;
546 } u;
547 } LTTNG_PACKED;
548
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
562 /*
563 * Status message returned to the sessiond after a received command.
564 */
565 struct lttcomm_consumer_status_msg {
566 enum lttcomm_return_code ret_code;
567 } LTTNG_PACKED;
568
569 struct lttcomm_consumer_status_channel {
570 enum lttcomm_return_code ret_code;
571 uint64_t key;
572 unsigned int stream_count;
573 } LTTNG_PACKED;
574
575 #ifdef HAVE_LIBLTTNG_UST_CTL
576
577 #include <lttng/ust-abi.h>
578
579 /*
580 * Data structure for the commands sent from sessiond to UST.
581 */
582 struct lttcomm_ust_msg {
583 uint32_t handle;
584 uint32_t cmd;
585 union {
586 struct lttng_ust_channel channel;
587 struct lttng_ust_stream stream;
588 struct lttng_ust_event event;
589 struct lttng_ust_context context;
590 struct lttng_ust_tracer_version version;
591 } u;
592 } LTTNG_PACKED;
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 {
604 struct {
605 uint64_t memory_map_size;
606 } LTTNG_PACKED channel;
607 struct {
608 uint64_t memory_map_size;
609 } LTTNG_PACKED stream;
610 struct lttng_ust_tracer_version version;
611 } u;
612 } LTTNG_PACKED;
613
614 #endif /* HAVE_LIBLTTNG_UST_CTL */
615
616 extern const char *lttcomm_get_readable_code(enum lttcomm_return_code code);
617
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
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);
630
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
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
638 extern void lttcomm_init(void);
639 /* Get network timeout, in milliseconds */
640 extern unsigned long lttcomm_get_network_timeout(void);
641
642 #endif /* _LTTNG_SESSIOND_COMM_H */
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