Commit | Line | Data |
---|---|---|
00e2e675 | 1 | /* |
ab5be9fa MJ |
2 | * Copyright (C) 2012 David Goulet <dgoulet@efficios.com> |
3 | * Copyright (C) 2018 Jérémie Galarneau <jeremie.galarneau@efficios.com> | |
00e2e675 | 4 | * |
ab5be9fa | 5 | * SPDX-License-Identifier: GPL-2.0-only |
00e2e675 | 6 | * |
00e2e675 DG |
7 | */ |
8 | ||
6c1c0768 | 9 | #define _LGPL_SOURCE |
00e2e675 DG |
10 | #include <stdio.h> |
11 | #include <stdlib.h> | |
12 | #include <string.h> | |
13 | #include <sys/stat.h> | |
14 | #include <sys/types.h> | |
15 | #include <unistd.h> | |
d88aee68 | 16 | #include <inttypes.h> |
00e2e675 | 17 | |
c9e313bc SM |
18 | #include <common/common.hpp> |
19 | #include <common/defaults.hpp> | |
c9e313bc SM |
20 | #include <common/relayd/relayd.hpp> |
21 | #include <common/string-utils/format.hpp> | |
8696b40b JR |
22 | #include <common/uri.hpp> |
23 | #include <lttng/trace-format-descriptor-internal.hpp> | |
00e2e675 | 24 | |
c9e313bc SM |
25 | #include "consumer.hpp" |
26 | #include "health-sessiond.hpp" | |
27 | #include "ust-app.hpp" | |
28 | #include "utils.hpp" | |
29 | #include "lttng-sessiond.hpp" | |
00e2e675 | 30 | |
3b967712 MD |
31 | /* |
32 | * Return allocated full pathname of the session using the consumer trace path | |
33 | * and subdir if available. | |
34 | * | |
35 | * The caller can safely free(3) the returned value. On error, NULL is | |
36 | * returned. | |
37 | */ | |
38 | char *setup_channel_trace_path(struct consumer_output *consumer, | |
5da88b0f | 39 | const char *session_path, size_t *consumer_path_offset) |
3b967712 MD |
40 | { |
41 | int ret; | |
42 | char *pathname; | |
43 | ||
a0377dfe FD |
44 | LTTNG_ASSERT(consumer); |
45 | LTTNG_ASSERT(session_path); | |
3b967712 MD |
46 | |
47 | health_code_update(); | |
48 | ||
49 | /* | |
50 | * Allocate the string ourself to make sure we never exceed | |
51 | * LTTNG_PATH_MAX. | |
52 | */ | |
64803277 | 53 | pathname = calloc<char>(LTTNG_PATH_MAX); |
3b967712 MD |
54 | if (!pathname) { |
55 | goto error; | |
56 | } | |
57 | ||
58 | /* Get correct path name destination */ | |
59 | if (consumer->type == CONSUMER_DST_NET && | |
60 | consumer->relay_major_version == 2 && | |
61 | consumer->relay_minor_version < 11) { | |
5da88b0f | 62 | ret = snprintf(pathname, LTTNG_PATH_MAX, "%s%s/%s/%s", |
3b967712 MD |
63 | consumer->dst.net.base_dir, |
64 | consumer->chunk_path, consumer->domain_subdir, | |
65 | session_path); | |
5da88b0f | 66 | *consumer_path_offset = 0; |
3b967712 | 67 | } else { |
5da88b0f | 68 | ret = snprintf(pathname, LTTNG_PATH_MAX, "%s/%s", |
3b967712 | 69 | consumer->domain_subdir, session_path); |
5da88b0f | 70 | *consumer_path_offset = strlen(consumer->domain_subdir) + 1; |
3b967712 MD |
71 | } |
72 | DBG3("Consumer trace path relative to current trace chunk: \"%s\"", | |
73 | pathname); | |
74 | if (ret < 0) { | |
75 | PERROR("Failed to format channel path"); | |
76 | goto error; | |
77 | } else if (ret >= LTTNG_PATH_MAX) { | |
78 | ERR("Truncation occurred while formatting channel path"); | |
3b967712 MD |
79 | goto error; |
80 | } | |
81 | ||
82 | return pathname; | |
83 | error: | |
84 | free(pathname); | |
85 | return NULL; | |
86 | } | |
87 | ||
52898cb1 DG |
88 | /* |
89 | * Send a data payload using a given consumer socket of size len. | |
90 | * | |
91 | * The consumer socket lock MUST be acquired before calling this since this | |
92 | * function can change the fd value. | |
93 | * | |
94 | * Return 0 on success else a negative value on error. | |
95 | */ | |
04ed9e10 JG |
96 | int consumer_socket_send( |
97 | struct consumer_socket *socket, const void *msg, size_t len) | |
52898cb1 DG |
98 | { |
99 | int fd; | |
100 | ssize_t size; | |
101 | ||
a0377dfe FD |
102 | LTTNG_ASSERT(socket); |
103 | LTTNG_ASSERT(socket->fd_ptr); | |
104 | LTTNG_ASSERT(msg); | |
52898cb1 DG |
105 | |
106 | /* Consumer socket is invalid. Stopping. */ | |
9363801e | 107 | fd = *socket->fd_ptr; |
52898cb1 DG |
108 | if (fd < 0) { |
109 | goto error; | |
110 | } | |
111 | ||
112 | size = lttcomm_send_unix_sock(fd, msg, len); | |
113 | if (size < 0) { | |
114 | /* The above call will print a PERROR on error. */ | |
115 | DBG("Error when sending data to consumer on sock %d", fd); | |
116 | /* | |
92db7cdc DG |
117 | * At this point, the socket is not usable anymore thus closing it and |
118 | * setting the file descriptor to -1 so it is not reused. | |
52898cb1 DG |
119 | */ |
120 | ||
121 | /* This call will PERROR on error. */ | |
122 | (void) lttcomm_close_unix_sock(fd); | |
9363801e | 123 | *socket->fd_ptr = -1; |
52898cb1 DG |
124 | goto error; |
125 | } | |
126 | ||
127 | return 0; | |
128 | ||
129 | error: | |
130 | return -1; | |
131 | } | |
132 | ||
133 | /* | |
134 | * Receive a data payload using a given consumer socket of size len. | |
135 | * | |
136 | * The consumer socket lock MUST be acquired before calling this since this | |
137 | * function can change the fd value. | |
138 | * | |
139 | * Return 0 on success else a negative value on error. | |
140 | */ | |
141 | int consumer_socket_recv(struct consumer_socket *socket, void *msg, size_t len) | |
142 | { | |
143 | int fd; | |
144 | ssize_t size; | |
145 | ||
a0377dfe FD |
146 | LTTNG_ASSERT(socket); |
147 | LTTNG_ASSERT(socket->fd_ptr); | |
148 | LTTNG_ASSERT(msg); | |
52898cb1 DG |
149 | |
150 | /* Consumer socket is invalid. Stopping. */ | |
9363801e | 151 | fd = *socket->fd_ptr; |
52898cb1 DG |
152 | if (fd < 0) { |
153 | goto error; | |
154 | } | |
155 | ||
156 | size = lttcomm_recv_unix_sock(fd, msg, len); | |
157 | if (size <= 0) { | |
158 | /* The above call will print a PERROR on error. */ | |
159 | DBG("Error when receiving data from the consumer socket %d", fd); | |
160 | /* | |
92db7cdc DG |
161 | * At this point, the socket is not usable anymore thus closing it and |
162 | * setting the file descriptor to -1 so it is not reused. | |
52898cb1 DG |
163 | */ |
164 | ||
165 | /* This call will PERROR on error. */ | |
166 | (void) lttcomm_close_unix_sock(fd); | |
9363801e | 167 | *socket->fd_ptr = -1; |
52898cb1 DG |
168 | goto error; |
169 | } | |
170 | ||
171 | return 0; | |
172 | ||
173 | error: | |
174 | return -1; | |
175 | } | |
176 | ||
f50f23d9 DG |
177 | /* |
178 | * Receive a reply command status message from the consumer. Consumer socket | |
179 | * lock MUST be acquired before calling this function. | |
180 | * | |
181 | * Return 0 on success, -1 on recv error or a negative lttng error code which | |
182 | * was possibly returned by the consumer. | |
183 | */ | |
184 | int consumer_recv_status_reply(struct consumer_socket *sock) | |
185 | { | |
186 | int ret; | |
187 | struct lttcomm_consumer_status_msg reply; | |
188 | ||
a0377dfe | 189 | LTTNG_ASSERT(sock); |
f50f23d9 | 190 | |
52898cb1 DG |
191 | ret = consumer_socket_recv(sock, &reply, sizeof(reply)); |
192 | if (ret < 0) { | |
f50f23d9 DG |
193 | goto end; |
194 | } | |
195 | ||
0c759fc9 | 196 | if (reply.ret_code == LTTCOMM_CONSUMERD_SUCCESS) { |
f50f23d9 DG |
197 | /* All good. */ |
198 | ret = 0; | |
199 | } else { | |
200 | ret = -reply.ret_code; | |
ffe60014 | 201 | DBG("Consumer ret code %d", ret); |
f50f23d9 DG |
202 | } |
203 | ||
204 | end: | |
205 | return ret; | |
206 | } | |
207 | ||
ffe60014 DG |
208 | /* |
209 | * Once the ASK_CHANNEL command is sent to the consumer, the channel | |
210 | * information are sent back. This call receives that data and populates key | |
211 | * and stream_count. | |
212 | * | |
213 | * On success return 0 and both key and stream_count are set. On error, a | |
214 | * negative value is sent back and both parameters are untouched. | |
215 | */ | |
216 | int consumer_recv_status_channel(struct consumer_socket *sock, | |
d88aee68 | 217 | uint64_t *key, unsigned int *stream_count) |
ffe60014 DG |
218 | { |
219 | int ret; | |
220 | struct lttcomm_consumer_status_channel reply; | |
221 | ||
a0377dfe FD |
222 | LTTNG_ASSERT(sock); |
223 | LTTNG_ASSERT(stream_count); | |
224 | LTTNG_ASSERT(key); | |
ffe60014 | 225 | |
52898cb1 DG |
226 | ret = consumer_socket_recv(sock, &reply, sizeof(reply)); |
227 | if (ret < 0) { | |
ffe60014 DG |
228 | goto end; |
229 | } | |
230 | ||
231 | /* An error is possible so don't touch the key and stream_count. */ | |
0c759fc9 | 232 | if (reply.ret_code != LTTCOMM_CONSUMERD_SUCCESS) { |
ffe60014 DG |
233 | ret = -1; |
234 | goto end; | |
235 | } | |
236 | ||
237 | *key = reply.key; | |
238 | *stream_count = reply.stream_count; | |
0c759fc9 | 239 | ret = 0; |
ffe60014 DG |
240 | |
241 | end: | |
242 | return ret; | |
243 | } | |
244 | ||
2f77fc4b DG |
245 | /* |
246 | * Send destroy relayd command to consumer. | |
247 | * | |
248 | * On success return positive value. On error, negative value. | |
249 | */ | |
250 | int consumer_send_destroy_relayd(struct consumer_socket *sock, | |
251 | struct consumer_output *consumer) | |
252 | { | |
253 | int ret; | |
254 | struct lttcomm_consumer_msg msg; | |
255 | ||
a0377dfe FD |
256 | LTTNG_ASSERT(consumer); |
257 | LTTNG_ASSERT(sock); | |
2f77fc4b | 258 | |
9363801e | 259 | DBG2("Sending destroy relayd command to consumer sock %d", *sock->fd_ptr); |
2f77fc4b | 260 | |
53efb85a | 261 | memset(&msg, 0, sizeof(msg)); |
2f77fc4b DG |
262 | msg.cmd_type = LTTNG_CONSUMER_DESTROY_RELAYD; |
263 | msg.u.destroy_relayd.net_seq_idx = consumer->net_seq_index; | |
264 | ||
265 | pthread_mutex_lock(sock->lock); | |
52898cb1 | 266 | ret = consumer_socket_send(sock, &msg, sizeof(msg)); |
2f77fc4b | 267 | if (ret < 0) { |
52898cb1 | 268 | goto error; |
2f77fc4b DG |
269 | } |
270 | ||
f50f23d9 DG |
271 | /* Don't check the return value. The caller will do it. */ |
272 | ret = consumer_recv_status_reply(sock); | |
273 | ||
2f77fc4b DG |
274 | DBG2("Consumer send destroy relayd command done"); |
275 | ||
276 | error: | |
52898cb1 | 277 | pthread_mutex_unlock(sock->lock); |
2f77fc4b DG |
278 | return ret; |
279 | } | |
280 | ||
281 | /* | |
282 | * For each consumer socket in the consumer output object, send a destroy | |
283 | * relayd command. | |
284 | */ | |
285 | void consumer_output_send_destroy_relayd(struct consumer_output *consumer) | |
286 | { | |
2f77fc4b DG |
287 | struct lttng_ht_iter iter; |
288 | struct consumer_socket *socket; | |
289 | ||
a0377dfe | 290 | LTTNG_ASSERT(consumer); |
2f77fc4b DG |
291 | |
292 | /* Destroy any relayd connection */ | |
6dc3064a | 293 | if (consumer->type == CONSUMER_DST_NET) { |
2f77fc4b DG |
294 | rcu_read_lock(); |
295 | cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket, | |
296 | node.node) { | |
c617c0c6 MD |
297 | int ret; |
298 | ||
2f77fc4b DG |
299 | /* Send destroy relayd command */ |
300 | ret = consumer_send_destroy_relayd(socket, consumer); | |
301 | if (ret < 0) { | |
c5c45efa | 302 | DBG("Unable to send destroy relayd command to consumer"); |
2f77fc4b DG |
303 | /* Continue since we MUST delete everything at this point. */ |
304 | } | |
305 | } | |
306 | rcu_read_unlock(); | |
307 | } | |
308 | } | |
309 | ||
a4b92340 DG |
310 | /* |
311 | * From a consumer_data structure, allocate and add a consumer socket to the | |
312 | * consumer output. | |
313 | * | |
314 | * Return 0 on success, else negative value on error | |
315 | */ | |
316 | int consumer_create_socket(struct consumer_data *data, | |
317 | struct consumer_output *output) | |
318 | { | |
319 | int ret = 0; | |
320 | struct consumer_socket *socket; | |
321 | ||
a0377dfe | 322 | LTTNG_ASSERT(data); |
a4b92340 DG |
323 | |
324 | if (output == NULL || data->cmd_sock < 0) { | |
325 | /* | |
326 | * Not an error. Possible there is simply not spawned consumer or it's | |
327 | * disabled for the tracing session asking the socket. | |
328 | */ | |
329 | goto error; | |
330 | } | |
331 | ||
332 | rcu_read_lock(); | |
333 | socket = consumer_find_socket(data->cmd_sock, output); | |
334 | rcu_read_unlock(); | |
335 | if (socket == NULL) { | |
4ce514c4 | 336 | socket = consumer_allocate_socket(&data->cmd_sock); |
a4b92340 DG |
337 | if (socket == NULL) { |
338 | ret = -1; | |
339 | goto error; | |
340 | } | |
341 | ||
2f77fc4b | 342 | socket->registered = 0; |
a4b92340 DG |
343 | socket->lock = &data->lock; |
344 | rcu_read_lock(); | |
345 | consumer_add_socket(socket, output); | |
346 | rcu_read_unlock(); | |
347 | } | |
348 | ||
6dc3064a DG |
349 | socket->type = data->type; |
350 | ||
a4b92340 DG |
351 | DBG3("Consumer socket created (fd: %d) and added to output", |
352 | data->cmd_sock); | |
353 | ||
354 | error: | |
355 | return ret; | |
356 | } | |
357 | ||
7972aab2 DG |
358 | /* |
359 | * Return the consumer socket from the given consumer output with the right | |
360 | * bitness. On error, returns NULL. | |
361 | * | |
362 | * The caller MUST acquire a rcu read side lock and keep it until the socket | |
363 | * object reference is not needed anymore. | |
364 | */ | |
365 | struct consumer_socket *consumer_find_socket_by_bitness(int bits, | |
348a81dc | 366 | const struct consumer_output *consumer) |
7972aab2 DG |
367 | { |
368 | int consumer_fd; | |
369 | struct consumer_socket *socket = NULL; | |
370 | ||
48b7cdc2 FD |
371 | ASSERT_RCU_READ_LOCKED(); |
372 | ||
7972aab2 DG |
373 | switch (bits) { |
374 | case 64: | |
412d7227 | 375 | consumer_fd = uatomic_read(&the_ust_consumerd64_fd); |
7972aab2 DG |
376 | break; |
377 | case 32: | |
412d7227 | 378 | consumer_fd = uatomic_read(&the_ust_consumerd32_fd); |
7972aab2 DG |
379 | break; |
380 | default: | |
a0377dfe | 381 | abort(); |
7972aab2 DG |
382 | goto end; |
383 | } | |
384 | ||
385 | socket = consumer_find_socket(consumer_fd, consumer); | |
386 | if (!socket) { | |
387 | ERR("Consumer socket fd %d not found in consumer obj %p", | |
388 | consumer_fd, consumer); | |
389 | } | |
390 | ||
391 | end: | |
392 | return socket; | |
393 | } | |
394 | ||
173af62f DG |
395 | /* |
396 | * Find a consumer_socket in a consumer_output hashtable. Read side lock must | |
397 | * be acquired before calling this function and across use of the | |
398 | * returned consumer_socket. | |
399 | */ | |
400 | struct consumer_socket *consumer_find_socket(int key, | |
348a81dc | 401 | const struct consumer_output *consumer) |
173af62f DG |
402 | { |
403 | struct lttng_ht_iter iter; | |
404 | struct lttng_ht_node_ulong *node; | |
405 | struct consumer_socket *socket = NULL; | |
406 | ||
48b7cdc2 FD |
407 | ASSERT_RCU_READ_LOCKED(); |
408 | ||
173af62f | 409 | /* Negative keys are lookup failures */ |
a4b92340 | 410 | if (key < 0 || consumer == NULL) { |
173af62f DG |
411 | return NULL; |
412 | } | |
413 | ||
414 | lttng_ht_lookup(consumer->socks, (void *)((unsigned long) key), | |
415 | &iter); | |
416 | node = lttng_ht_iter_get_node_ulong(&iter); | |
417 | if (node != NULL) { | |
0114db0e | 418 | socket = lttng::utils::container_of(node, &consumer_socket::node); |
173af62f DG |
419 | } |
420 | ||
421 | return socket; | |
422 | } | |
423 | ||
424 | /* | |
425 | * Allocate a new consumer_socket and return the pointer. | |
426 | */ | |
4ce514c4 | 427 | struct consumer_socket *consumer_allocate_socket(int *fd) |
173af62f DG |
428 | { |
429 | struct consumer_socket *socket = NULL; | |
430 | ||
a0377dfe | 431 | LTTNG_ASSERT(fd); |
4ce514c4 | 432 | |
64803277 | 433 | socket = zmalloc<consumer_socket>(); |
173af62f DG |
434 | if (socket == NULL) { |
435 | PERROR("zmalloc consumer socket"); | |
436 | goto error; | |
437 | } | |
438 | ||
9363801e | 439 | socket->fd_ptr = fd; |
4ce514c4 | 440 | lttng_ht_node_init_ulong(&socket->node, *fd); |
173af62f DG |
441 | |
442 | error: | |
443 | return socket; | |
444 | } | |
445 | ||
446 | /* | |
447 | * Add consumer socket to consumer output object. Read side lock must be | |
448 | * acquired before calling this function. | |
449 | */ | |
450 | void consumer_add_socket(struct consumer_socket *sock, | |
451 | struct consumer_output *consumer) | |
452 | { | |
a0377dfe FD |
453 | LTTNG_ASSERT(sock); |
454 | LTTNG_ASSERT(consumer); | |
48b7cdc2 | 455 | ASSERT_RCU_READ_LOCKED(); |
173af62f DG |
456 | |
457 | lttng_ht_add_unique_ulong(consumer->socks, &sock->node); | |
458 | } | |
459 | ||
460 | /* | |
348a81dc | 461 | * Delete consumer socket to consumer output object. Read side lock must be |
173af62f DG |
462 | * acquired before calling this function. |
463 | */ | |
464 | void consumer_del_socket(struct consumer_socket *sock, | |
465 | struct consumer_output *consumer) | |
466 | { | |
467 | int ret; | |
468 | struct lttng_ht_iter iter; | |
469 | ||
a0377dfe FD |
470 | LTTNG_ASSERT(sock); |
471 | LTTNG_ASSERT(consumer); | |
48b7cdc2 | 472 | ASSERT_RCU_READ_LOCKED(); |
173af62f DG |
473 | |
474 | iter.iter.node = &sock->node.node; | |
475 | ret = lttng_ht_del(consumer->socks, &iter); | |
a0377dfe | 476 | LTTNG_ASSERT(!ret); |
173af62f DG |
477 | } |
478 | ||
479 | /* | |
480 | * RCU destroy call function. | |
481 | */ | |
482 | static void destroy_socket_rcu(struct rcu_head *head) | |
483 | { | |
484 | struct lttng_ht_node_ulong *node = | |
0114db0e | 485 | lttng::utils::container_of(head, <tng_ht_node_ulong::head); |
173af62f | 486 | struct consumer_socket *socket = |
0114db0e | 487 | lttng::utils::container_of(node, &consumer_socket::node); |
173af62f DG |
488 | |
489 | free(socket); | |
490 | } | |
491 | ||
492 | /* | |
48b7cdc2 FD |
493 | * Destroy and free socket pointer in a call RCU. The call must either: |
494 | * - have acquired the read side lock before calling this function, or | |
495 | * - guarantee the validity of the `struct consumer_socket` object for the | |
496 | * duration of the call. | |
173af62f DG |
497 | */ |
498 | void consumer_destroy_socket(struct consumer_socket *sock) | |
499 | { | |
a0377dfe | 500 | LTTNG_ASSERT(sock); |
173af62f DG |
501 | |
502 | /* | |
503 | * We DO NOT close the file descriptor here since it is global to the | |
2f77fc4b DG |
504 | * session daemon and is closed only if the consumer dies or a custom |
505 | * consumer was registered, | |
173af62f | 506 | */ |
2f77fc4b | 507 | if (sock->registered) { |
9363801e DG |
508 | DBG3("Consumer socket was registered. Closing fd %d", *sock->fd_ptr); |
509 | lttcomm_close_unix_sock(*sock->fd_ptr); | |
2f77fc4b | 510 | } |
173af62f DG |
511 | |
512 | call_rcu(&sock->node.head, destroy_socket_rcu); | |
513 | } | |
514 | ||
00e2e675 DG |
515 | /* |
516 | * Allocate and assign data to a consumer_output object. | |
517 | * | |
518 | * Return pointer to structure. | |
519 | */ | |
520 | struct consumer_output *consumer_create_output(enum consumer_dst_type type) | |
521 | { | |
522 | struct consumer_output *output = NULL; | |
523 | ||
64803277 | 524 | output = zmalloc<consumer_output>(); |
00e2e675 DG |
525 | if (output == NULL) { |
526 | PERROR("zmalloc consumer_output"); | |
527 | goto error; | |
528 | } | |
529 | ||
530 | /* By default, consumer output is enabled */ | |
531 | output->enabled = 1; | |
532 | output->type = type; | |
d88aee68 | 533 | output->net_seq_index = (uint64_t) -1ULL; |
6addfa37 | 534 | urcu_ref_init(&output->ref); |
173af62f DG |
535 | |
536 | output->socks = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG); | |
00e2e675 DG |
537 | |
538 | error: | |
539 | return output; | |
540 | } | |
541 | ||
af706bb7 DG |
542 | /* |
543 | * Iterate over the consumer output socket hash table and destroy them. The | |
544 | * socket file descriptor are only closed if the consumer output was | |
545 | * registered meaning it's an external consumer. | |
546 | */ | |
547 | void consumer_destroy_output_sockets(struct consumer_output *obj) | |
548 | { | |
549 | struct lttng_ht_iter iter; | |
550 | struct consumer_socket *socket; | |
551 | ||
552 | if (!obj->socks) { | |
553 | return; | |
554 | } | |
555 | ||
556 | rcu_read_lock(); | |
557 | cds_lfht_for_each_entry(obj->socks->ht, &iter.iter, socket, node.node) { | |
558 | consumer_del_socket(socket, obj); | |
559 | consumer_destroy_socket(socket); | |
560 | } | |
561 | rcu_read_unlock(); | |
562 | } | |
563 | ||
00e2e675 DG |
564 | /* |
565 | * Delete the consumer_output object from the list and free the ptr. | |
566 | */ | |
6addfa37 | 567 | static void consumer_release_output(struct urcu_ref *ref) |
00e2e675 | 568 | { |
6addfa37 | 569 | struct consumer_output *obj = |
0114db0e | 570 | lttng::utils::container_of(ref, &consumer_output::ref); |
00e2e675 | 571 | |
af706bb7 | 572 | consumer_destroy_output_sockets(obj); |
2f77fc4b | 573 | |
af706bb7 | 574 | if (obj->socks) { |
2f77fc4b | 575 | /* Finally destroy HT */ |
3c339053 | 576 | lttng_ht_destroy(obj->socks); |
00e2e675 | 577 | } |
173af62f | 578 | |
00e2e675 DG |
579 | free(obj); |
580 | } | |
581 | ||
6addfa37 MD |
582 | /* |
583 | * Get the consumer_output object. | |
584 | */ | |
585 | void consumer_output_get(struct consumer_output *obj) | |
586 | { | |
587 | urcu_ref_get(&obj->ref); | |
588 | } | |
589 | ||
590 | /* | |
591 | * Put the consumer_output object. | |
6addfa37 MD |
592 | */ |
593 | void consumer_output_put(struct consumer_output *obj) | |
594 | { | |
595 | if (!obj) { | |
596 | return; | |
597 | } | |
598 | urcu_ref_put(&obj->ref, consumer_release_output); | |
599 | } | |
600 | ||
00e2e675 DG |
601 | /* |
602 | * Copy consumer output and returned the newly allocated copy. | |
603 | */ | |
b178f53e | 604 | struct consumer_output *consumer_copy_output(struct consumer_output *src) |
00e2e675 | 605 | { |
6dc3064a | 606 | int ret; |
00e2e675 DG |
607 | struct consumer_output *output; |
608 | ||
a0377dfe | 609 | LTTNG_ASSERT(src); |
00e2e675 | 610 | |
b178f53e | 611 | output = consumer_create_output(src->type); |
00e2e675 | 612 | if (output == NULL) { |
6addfa37 | 613 | goto end; |
00e2e675 | 614 | } |
b178f53e JG |
615 | output->enabled = src->enabled; |
616 | output->net_seq_index = src->net_seq_index; | |
617 | memcpy(output->domain_subdir, src->domain_subdir, | |
618 | sizeof(output->domain_subdir)); | |
619 | output->snapshot = src->snapshot; | |
620 | output->relay_major_version = src->relay_major_version; | |
621 | output->relay_minor_version = src->relay_minor_version; | |
eacb7b6f | 622 | output->relay_allows_clear = src->relay_allows_clear; |
b178f53e JG |
623 | memcpy(&output->dst, &src->dst, sizeof(output->dst)); |
624 | ret = consumer_copy_sockets(output, src); | |
6dc3064a | 625 | if (ret < 0) { |
6addfa37 | 626 | goto error_put; |
6dc3064a | 627 | } |
6addfa37 | 628 | end: |
6dc3064a DG |
629 | return output; |
630 | ||
6addfa37 MD |
631 | error_put: |
632 | consumer_output_put(output); | |
6dc3064a DG |
633 | return NULL; |
634 | } | |
635 | ||
636 | /* | |
637 | * Copy consumer sockets from src to dst. | |
638 | * | |
639 | * Return 0 on success or else a negative value. | |
640 | */ | |
641 | int consumer_copy_sockets(struct consumer_output *dst, | |
642 | struct consumer_output *src) | |
643 | { | |
644 | int ret = 0; | |
645 | struct lttng_ht_iter iter; | |
646 | struct consumer_socket *socket, *copy_sock; | |
647 | ||
a0377dfe FD |
648 | LTTNG_ASSERT(dst); |
649 | LTTNG_ASSERT(src); | |
6dc3064a | 650 | |
b82c5c4d | 651 | rcu_read_lock(); |
6dc3064a DG |
652 | cds_lfht_for_each_entry(src->socks->ht, &iter.iter, socket, node.node) { |
653 | /* Ignore socket that are already there. */ | |
9363801e | 654 | copy_sock = consumer_find_socket(*socket->fd_ptr, dst); |
6dc3064a DG |
655 | if (copy_sock) { |
656 | continue; | |
657 | } | |
658 | ||
173af62f | 659 | /* Create new socket object. */ |
9363801e | 660 | copy_sock = consumer_allocate_socket(socket->fd_ptr); |
173af62f | 661 | if (copy_sock == NULL) { |
b82c5c4d | 662 | rcu_read_unlock(); |
6dc3064a DG |
663 | ret = -ENOMEM; |
664 | goto error; | |
173af62f DG |
665 | } |
666 | ||
09a90bcd | 667 | copy_sock->registered = socket->registered; |
6dc3064a DG |
668 | /* |
669 | * This is valid because this lock is shared accross all consumer | |
670 | * object being the global lock of the consumer data structure of the | |
671 | * session daemon. | |
672 | */ | |
173af62f | 673 | copy_sock->lock = socket->lock; |
6dc3064a | 674 | consumer_add_socket(copy_sock, dst); |
173af62f | 675 | } |
b82c5c4d | 676 | rcu_read_unlock(); |
173af62f | 677 | |
00e2e675 | 678 | error: |
6dc3064a | 679 | return ret; |
00e2e675 DG |
680 | } |
681 | ||
682 | /* | |
b178f53e | 683 | * Set network URI to the consumer output. |
00e2e675 | 684 | * |
ad20f474 DG |
685 | * Return 0 on success. Return 1 if the URI were equal. Else, negative value on |
686 | * error. | |
00e2e675 | 687 | */ |
b178f53e JG |
688 | int consumer_set_network_uri(const struct ltt_session *session, |
689 | struct consumer_output *output, | |
00e2e675 DG |
690 | struct lttng_uri *uri) |
691 | { | |
692 | int ret; | |
00e2e675 DG |
693 | struct lttng_uri *dst_uri = NULL; |
694 | ||
695 | /* Code flow error safety net. */ | |
a0377dfe FD |
696 | LTTNG_ASSERT(output); |
697 | LTTNG_ASSERT(uri); | |
00e2e675 DG |
698 | |
699 | switch (uri->stype) { | |
700 | case LTTNG_STREAM_CONTROL: | |
b178f53e JG |
701 | dst_uri = &output->dst.net.control; |
702 | output->dst.net.control_isset = 1; | |
00e2e675 DG |
703 | if (uri->port == 0) { |
704 | /* Assign default port. */ | |
705 | uri->port = DEFAULT_NETWORK_CONTROL_PORT; | |
a74934ba | 706 | } else { |
b178f53e JG |
707 | if (output->dst.net.data_isset && uri->port == |
708 | output->dst.net.data.port) { | |
a74934ba DG |
709 | ret = -LTTNG_ERR_INVALID; |
710 | goto error; | |
711 | } | |
00e2e675 | 712 | } |
ad20f474 | 713 | DBG3("Consumer control URI set with port %d", uri->port); |
00e2e675 DG |
714 | break; |
715 | case LTTNG_STREAM_DATA: | |
b178f53e JG |
716 | dst_uri = &output->dst.net.data; |
717 | output->dst.net.data_isset = 1; | |
00e2e675 DG |
718 | if (uri->port == 0) { |
719 | /* Assign default port. */ | |
720 | uri->port = DEFAULT_NETWORK_DATA_PORT; | |
a74934ba | 721 | } else { |
b178f53e JG |
722 | if (output->dst.net.control_isset && uri->port == |
723 | output->dst.net.control.port) { | |
a74934ba DG |
724 | ret = -LTTNG_ERR_INVALID; |
725 | goto error; | |
726 | } | |
00e2e675 | 727 | } |
ad20f474 | 728 | DBG3("Consumer data URI set with port %d", uri->port); |
00e2e675 DG |
729 | break; |
730 | default: | |
731 | ERR("Set network uri type unknown %d", uri->stype); | |
a74934ba | 732 | ret = -LTTNG_ERR_INVALID; |
00e2e675 DG |
733 | goto error; |
734 | } | |
735 | ||
736 | ret = uri_compare(dst_uri, uri); | |
737 | if (!ret) { | |
738 | /* Same URI, don't touch it and return success. */ | |
739 | DBG3("URI network compare are the same"); | |
ad20f474 | 740 | goto equal; |
00e2e675 DG |
741 | } |
742 | ||
743 | /* URIs were not equal, replacing it. */ | |
00e2e675 | 744 | memcpy(dst_uri, uri, sizeof(struct lttng_uri)); |
b178f53e JG |
745 | output->type = CONSUMER_DST_NET; |
746 | if (dst_uri->stype != LTTNG_STREAM_CONTROL) { | |
747 | /* Only the control uri needs to contain the path. */ | |
748 | goto end; | |
749 | } | |
00e2e675 | 750 | |
b178f53e JG |
751 | /* |
752 | * If the user has specified a subdir as part of the control | |
753 | * URL, the session's base output directory is: | |
754 | * /RELAYD_OUTPUT_PATH/HOSTNAME/USER_SPECIFIED_DIR | |
755 | * | |
756 | * Hence, the "base_dir" from which all stream files and | |
757 | * session rotation chunks are created takes the form | |
758 | * /HOSTNAME/USER_SPECIFIED_DIR | |
759 | * | |
760 | * If the user has not specified an output directory as part of | |
761 | * the control URL, the base output directory has the form: | |
762 | * /RELAYD_OUTPUT_PATH/HOSTNAME/SESSION_NAME-CREATION_TIME | |
763 | * | |
764 | * Hence, the "base_dir" from which all stream files and | |
765 | * session rotation chunks are created takes the form | |
766 | * /HOSTNAME/SESSION_NAME-CREATION_TIME | |
767 | * | |
768 | * Note that automatically generated session names already | |
769 | * contain the session's creation time. In that case, the | |
770 | * creation time is omitted to prevent it from being duplicated | |
771 | * in the final directory hierarchy. | |
772 | */ | |
773 | if (*uri->subdir) { | |
774 | if (strstr(uri->subdir, "../")) { | |
775 | ERR("Network URI subdirs are not allowed to walk up the path hierarchy"); | |
776 | ret = -LTTNG_ERR_INVALID; | |
00e2e675 DG |
777 | goto error; |
778 | } | |
b178f53e JG |
779 | ret = snprintf(output->dst.net.base_dir, |
780 | sizeof(output->dst.net.base_dir), | |
781 | "/%s/%s/", session->hostname, uri->subdir); | |
782 | } else { | |
783 | if (session->has_auto_generated_name) { | |
784 | ret = snprintf(output->dst.net.base_dir, | |
785 | sizeof(output->dst.net.base_dir), | |
786 | "/%s/%s/", session->hostname, | |
787 | session->name); | |
788 | } else { | |
789 | char session_creation_datetime[16]; | |
790 | size_t strftime_ret; | |
791 | struct tm *timeinfo; | |
00e2e675 | 792 | |
b178f53e JG |
793 | timeinfo = localtime(&session->creation_time); |
794 | if (!timeinfo) { | |
795 | ret = -LTTNG_ERR_FATAL; | |
796 | goto error; | |
797 | } | |
798 | strftime_ret = strftime(session_creation_datetime, | |
799 | sizeof(session_creation_datetime), | |
800 | "%Y%m%d-%H%M%S", timeinfo); | |
801 | if (strftime_ret == 0) { | |
802 | ERR("Failed to format session creation timestamp while setting network URI"); | |
803 | ret = -LTTNG_ERR_FATAL; | |
804 | goto error; | |
805 | } | |
806 | ret = snprintf(output->dst.net.base_dir, | |
807 | sizeof(output->dst.net.base_dir), | |
808 | "/%s/%s-%s/", session->hostname, | |
809 | session->name, | |
810 | session_creation_datetime); | |
bfc6eff0 | 811 | } |
00e2e675 | 812 | } |
b178f53e JG |
813 | if (ret >= sizeof(output->dst.net.base_dir)) { |
814 | ret = -LTTNG_ERR_INVALID; | |
815 | ERR("Truncation occurred while setting network output base directory"); | |
816 | goto error; | |
817 | } else if (ret == -1) { | |
818 | ret = -LTTNG_ERR_INVALID; | |
819 | PERROR("Error occurred while setting network output base directory"); | |
820 | goto error; | |
821 | } | |
822 | ||
823 | DBG3("Consumer set network uri base_dir path %s", | |
824 | output->dst.net.base_dir); | |
00e2e675 | 825 | |
b178f53e | 826 | end: |
00e2e675 | 827 | return 0; |
ad20f474 DG |
828 | equal: |
829 | return 1; | |
00e2e675 | 830 | error: |
a74934ba | 831 | return ret; |
00e2e675 DG |
832 | } |
833 | ||
834 | /* | |
835 | * Send file descriptor to consumer via sock. | |
9a318688 JG |
836 | * |
837 | * The consumer socket lock must be held by the caller. | |
00e2e675 | 838 | */ |
ac2f30af JG |
839 | int consumer_send_fds(struct consumer_socket *sock, const int *fds, |
840 | size_t nb_fd) | |
00e2e675 DG |
841 | { |
842 | int ret; | |
843 | ||
a0377dfe FD |
844 | LTTNG_ASSERT(fds); |
845 | LTTNG_ASSERT(sock); | |
846 | LTTNG_ASSERT(nb_fd > 0); | |
847 | LTTNG_ASSERT(pthread_mutex_trylock(sock->lock) == EBUSY); | |
00e2e675 | 848 | |
9363801e | 849 | ret = lttcomm_send_fds_unix_sock(*sock->fd_ptr, fds, nb_fd); |
00e2e675 | 850 | if (ret < 0) { |
3448e266 | 851 | /* The above call will print a PERROR on error. */ |
9363801e | 852 | DBG("Error when sending consumer fds on sock %d", *sock->fd_ptr); |
00e2e675 DG |
853 | goto error; |
854 | } | |
855 | ||
f50f23d9 | 856 | ret = consumer_recv_status_reply(sock); |
00e2e675 DG |
857 | error: |
858 | return ret; | |
859 | } | |
860 | ||
ffe60014 DG |
861 | /* |
862 | * Consumer send communication message structure to consumer. | |
9a318688 JG |
863 | * |
864 | * The consumer socket lock must be held by the caller. | |
ffe60014 DG |
865 | */ |
866 | int consumer_send_msg(struct consumer_socket *sock, | |
04ed9e10 | 867 | const struct lttcomm_consumer_msg *msg) |
ffe60014 DG |
868 | { |
869 | int ret; | |
870 | ||
a0377dfe FD |
871 | LTTNG_ASSERT(msg); |
872 | LTTNG_ASSERT(sock); | |
873 | LTTNG_ASSERT(pthread_mutex_trylock(sock->lock) == EBUSY); | |
ffe60014 | 874 | |
52898cb1 | 875 | ret = consumer_socket_send(sock, msg, sizeof(struct lttcomm_consumer_msg)); |
ffe60014 | 876 | if (ret < 0) { |
ffe60014 DG |
877 | goto error; |
878 | } | |
879 | ||
880 | ret = consumer_recv_status_reply(sock); | |
881 | ||
882 | error: | |
883 | return ret; | |
884 | } | |
885 | ||
00e2e675 DG |
886 | /* |
887 | * Consumer send channel communication message structure to consumer. | |
9a318688 JG |
888 | * |
889 | * The consumer socket lock must be held by the caller. | |
00e2e675 | 890 | */ |
f50f23d9 DG |
891 | int consumer_send_channel(struct consumer_socket *sock, |
892 | struct lttcomm_consumer_msg *msg) | |
00e2e675 DG |
893 | { |
894 | int ret; | |
895 | ||
a0377dfe FD |
896 | LTTNG_ASSERT(msg); |
897 | LTTNG_ASSERT(sock); | |
00e2e675 | 898 | |
52898cb1 | 899 | ret = consumer_send_msg(sock, msg); |
00e2e675 | 900 | if (ret < 0) { |
00e2e675 DG |
901 | goto error; |
902 | } | |
903 | ||
904 | error: | |
905 | return ret; | |
906 | } | |
907 | ||
ffe60014 DG |
908 | /* |
909 | * Populate the given consumer msg structure with the ask_channel command | |
910 | * information. | |
911 | */ | |
912 | void consumer_init_ask_channel_comm_msg(struct lttcomm_consumer_msg *msg, | |
913 | uint64_t subbuf_size, | |
914 | uint64_t num_subbuf, | |
915 | int overwrite, | |
916 | unsigned int switch_timer_interval, | |
917 | unsigned int read_timer_interval, | |
ecc48a90 | 918 | unsigned int live_timer_interval, |
a2814ea7 | 919 | bool is_in_live_session, |
e9404c27 | 920 | unsigned int monitor_timer_interval, |
ffe60014 DG |
921 | int output, |
922 | int type, | |
923 | uint64_t session_id, | |
924 | const char *pathname, | |
925 | const char *name, | |
d88aee68 DG |
926 | uint64_t relayd_id, |
927 | uint64_t key, | |
328c2fe7 | 928 | const lttng_uuid& uuid, |
1624d5b7 JD |
929 | uint32_t chan_id, |
930 | uint64_t tracefile_size, | |
2bba9e53 | 931 | uint64_t tracefile_count, |
1950109e | 932 | uint64_t session_id_per_pid, |
567eb353 | 933 | unsigned int monitor, |
d7ba1388 | 934 | uint32_t ust_app_uid, |
491d1539 | 935 | int64_t blocking_timeout, |
3d071855 | 936 | const char *root_shm_path, |
e098433c | 937 | const char *shm_path, |
1b0bebcb | 938 | struct lttng_trace_chunk *trace_chunk, |
8696b40b JR |
939 | const struct lttng_credentials *buffer_credentials, |
940 | const lttng::trace_format_descriptor& trace_format) | |
ffe60014 | 941 | { |
a0377dfe | 942 | LTTNG_ASSERT(msg); |
ffe60014 | 943 | |
26c468bb | 944 | /* Zeroed structure */ |
ffe60014 | 945 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); |
d2956687 JG |
946 | msg->u.ask_channel.buffer_credentials.uid = UINT32_MAX; |
947 | msg->u.ask_channel.buffer_credentials.gid = UINT32_MAX; | |
948 | ||
26c468bb | 949 | if (trace_chunk) { |
d2956687 JG |
950 | uint64_t chunk_id; |
951 | enum lttng_trace_chunk_status chunk_status; | |
d2956687 JG |
952 | |
953 | chunk_status = lttng_trace_chunk_get_id(trace_chunk, &chunk_id); | |
a0377dfe | 954 | LTTNG_ASSERT(chunk_status == LTTNG_TRACE_CHUNK_STATUS_OK); |
d2956687 | 955 | LTTNG_OPTIONAL_SET(&msg->u.ask_channel.chunk_id, chunk_id); |
26c468bb | 956 | } |
ff588497 JR |
957 | msg->u.ask_channel.buffer_credentials.uid = |
958 | lttng_credentials_get_uid(buffer_credentials); | |
959 | msg->u.ask_channel.buffer_credentials.gid = | |
960 | lttng_credentials_get_gid(buffer_credentials); | |
ffe60014 DG |
961 | |
962 | msg->cmd_type = LTTNG_CONSUMER_ASK_CHANNEL_CREATION; | |
963 | msg->u.ask_channel.subbuf_size = subbuf_size; | |
964 | msg->u.ask_channel.num_subbuf = num_subbuf ; | |
965 | msg->u.ask_channel.overwrite = overwrite; | |
966 | msg->u.ask_channel.switch_timer_interval = switch_timer_interval; | |
967 | msg->u.ask_channel.read_timer_interval = read_timer_interval; | |
ecc48a90 | 968 | msg->u.ask_channel.live_timer_interval = live_timer_interval; |
a2814ea7 | 969 | msg->u.ask_channel.is_live = is_in_live_session; |
e9404c27 | 970 | msg->u.ask_channel.monitor_timer_interval = monitor_timer_interval; |
ffe60014 DG |
971 | msg->u.ask_channel.output = output; |
972 | msg->u.ask_channel.type = type; | |
973 | msg->u.ask_channel.session_id = session_id; | |
1950109e | 974 | msg->u.ask_channel.session_id_per_pid = session_id_per_pid; |
ffe60014 DG |
975 | msg->u.ask_channel.relayd_id = relayd_id; |
976 | msg->u.ask_channel.key = key; | |
7972aab2 | 977 | msg->u.ask_channel.chan_id = chan_id; |
1624d5b7 JD |
978 | msg->u.ask_channel.tracefile_size = tracefile_size; |
979 | msg->u.ask_channel.tracefile_count = tracefile_count; | |
2bba9e53 | 980 | msg->u.ask_channel.monitor = monitor; |
567eb353 | 981 | msg->u.ask_channel.ust_app_uid = ust_app_uid; |
491d1539 | 982 | msg->u.ask_channel.blocking_timeout = blocking_timeout; |
8696b40b JR |
983 | if (trace_format.type() == LTTNG_TRACE_FORMAT_DESCRIPTOR_TYPE_CTF_1) { |
984 | msg->u.ask_channel.trace_format = 1; | |
985 | } else { | |
986 | msg->u.ask_channel.trace_format = 2; | |
987 | } | |
ffe60014 | 988 | |
328c2fe7 | 989 | std::copy(uuid.begin(), uuid.end(), msg->u.ask_channel.uuid); |
ffe60014 | 990 | |
10a50311 JD |
991 | if (pathname) { |
992 | strncpy(msg->u.ask_channel.pathname, pathname, | |
993 | sizeof(msg->u.ask_channel.pathname)); | |
994 | msg->u.ask_channel.pathname[sizeof(msg->u.ask_channel.pathname)-1] = '\0'; | |
995 | } | |
ffe60014 DG |
996 | |
997 | strncpy(msg->u.ask_channel.name, name, sizeof(msg->u.ask_channel.name)); | |
998 | msg->u.ask_channel.name[sizeof(msg->u.ask_channel.name) - 1] = '\0'; | |
d7ba1388 | 999 | |
3d071855 MD |
1000 | if (root_shm_path) { |
1001 | strncpy(msg->u.ask_channel.root_shm_path, root_shm_path, | |
1002 | sizeof(msg->u.ask_channel.root_shm_path)); | |
1003 | msg->u.ask_channel.root_shm_path[sizeof(msg->u.ask_channel.root_shm_path) - 1] = '\0'; | |
1004 | } | |
d7ba1388 MD |
1005 | if (shm_path) { |
1006 | strncpy(msg->u.ask_channel.shm_path, shm_path, | |
1007 | sizeof(msg->u.ask_channel.shm_path)); | |
1008 | msg->u.ask_channel.shm_path[sizeof(msg->u.ask_channel.shm_path) - 1] = '\0'; | |
1009 | } | |
ffe60014 DG |
1010 | } |
1011 | ||
00e2e675 DG |
1012 | /* |
1013 | * Init channel communication message structure. | |
1014 | */ | |
638e7b4e | 1015 | void consumer_init_add_channel_comm_msg(struct lttcomm_consumer_msg *msg, |
d88aee68 | 1016 | uint64_t channel_key, |
ffe60014 DG |
1017 | uint64_t session_id, |
1018 | const char *pathname, | |
d88aee68 | 1019 | uint64_t relayd_id, |
c30aaa51 | 1020 | const char *name, |
ffe60014 DG |
1021 | unsigned int nb_init_streams, |
1022 | enum lttng_event_output output, | |
1624d5b7 JD |
1023 | int type, |
1024 | uint64_t tracefile_size, | |
2bba9e53 | 1025 | uint64_t tracefile_count, |
ecc48a90 | 1026 | unsigned int monitor, |
e9404c27 | 1027 | unsigned int live_timer_interval, |
a2814ea7 | 1028 | bool is_in_live_session, |
d2956687 | 1029 | unsigned int monitor_timer_interval, |
8696b40b JR |
1030 | struct lttng_trace_chunk *trace_chunk, |
1031 | const lttng::trace_format_descriptor& trace_format) | |
00e2e675 | 1032 | { |
a0377dfe | 1033 | LTTNG_ASSERT(msg); |
00e2e675 | 1034 | |
00e2e675 DG |
1035 | /* Zeroed structure */ |
1036 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
1037 | ||
26c468bb | 1038 | if (trace_chunk) { |
d2956687 JG |
1039 | uint64_t chunk_id; |
1040 | enum lttng_trace_chunk_status chunk_status; | |
1041 | ||
1042 | chunk_status = lttng_trace_chunk_get_id(trace_chunk, &chunk_id); | |
a0377dfe | 1043 | LTTNG_ASSERT(chunk_status == LTTNG_TRACE_CHUNK_STATUS_OK); |
d2956687 | 1044 | LTTNG_OPTIONAL_SET(&msg->u.channel.chunk_id, chunk_id); |
26c468bb | 1045 | } |
d2956687 | 1046 | |
00e2e675 | 1047 | /* Send channel */ |
638e7b4e | 1048 | msg->cmd_type = LTTNG_CONSUMER_ADD_CHANNEL; |
00e2e675 | 1049 | msg->u.channel.channel_key = channel_key; |
ffe60014 | 1050 | msg->u.channel.session_id = session_id; |
ffe60014 | 1051 | msg->u.channel.relayd_id = relayd_id; |
c30aaa51 | 1052 | msg->u.channel.nb_init_streams = nb_init_streams; |
ffe60014 DG |
1053 | msg->u.channel.output = output; |
1054 | msg->u.channel.type = type; | |
1624d5b7 JD |
1055 | msg->u.channel.tracefile_size = tracefile_size; |
1056 | msg->u.channel.tracefile_count = tracefile_count; | |
2bba9e53 | 1057 | msg->u.channel.monitor = monitor; |
ecc48a90 | 1058 | msg->u.channel.live_timer_interval = live_timer_interval; |
a2814ea7 | 1059 | msg->u.channel.is_live = is_in_live_session; |
e9404c27 | 1060 | msg->u.channel.monitor_timer_interval = monitor_timer_interval; |
8696b40b JR |
1061 | if (trace_format.type() == LTTNG_TRACE_FORMAT_DESCRIPTOR_TYPE_CTF_1) { |
1062 | msg->u.channel.trace_format = 1; | |
1063 | } else { | |
1064 | msg->u.channel.trace_format = 2; | |
1065 | } | |
ffe60014 DG |
1066 | |
1067 | strncpy(msg->u.channel.pathname, pathname, | |
1068 | sizeof(msg->u.channel.pathname)); | |
1069 | msg->u.channel.pathname[sizeof(msg->u.channel.pathname) - 1] = '\0'; | |
1070 | ||
1071 | strncpy(msg->u.channel.name, name, sizeof(msg->u.channel.name)); | |
1072 | msg->u.channel.name[sizeof(msg->u.channel.name) - 1] = '\0'; | |
00e2e675 DG |
1073 | } |
1074 | ||
1075 | /* | |
1076 | * Init stream communication message structure. | |
1077 | */ | |
e098433c | 1078 | void consumer_init_add_stream_comm_msg(struct lttcomm_consumer_msg *msg, |
d88aee68 DG |
1079 | uint64_t channel_key, |
1080 | uint64_t stream_key, | |
d2956687 | 1081 | int32_t cpu) |
00e2e675 | 1082 | { |
a0377dfe | 1083 | LTTNG_ASSERT(msg); |
00e2e675 DG |
1084 | |
1085 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
1086 | ||
e098433c | 1087 | msg->cmd_type = LTTNG_CONSUMER_ADD_STREAM; |
00e2e675 DG |
1088 | msg->u.stream.channel_key = channel_key; |
1089 | msg->u.stream.stream_key = stream_key; | |
ffe60014 | 1090 | msg->u.stream.cpu = cpu; |
00e2e675 DG |
1091 | } |
1092 | ||
a4baae1b JD |
1093 | void consumer_init_streams_sent_comm_msg(struct lttcomm_consumer_msg *msg, |
1094 | enum lttng_consumer_command cmd, | |
1095 | uint64_t channel_key, uint64_t net_seq_idx) | |
1096 | { | |
a0377dfe | 1097 | LTTNG_ASSERT(msg); |
a4baae1b JD |
1098 | |
1099 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
1100 | ||
1101 | msg->cmd_type = cmd; | |
1102 | msg->u.sent_streams.channel_key = channel_key; | |
1103 | msg->u.sent_streams.net_seq_idx = net_seq_idx; | |
1104 | } | |
1105 | ||
00e2e675 DG |
1106 | /* |
1107 | * Send stream communication structure to the consumer. | |
1108 | */ | |
f50f23d9 DG |
1109 | int consumer_send_stream(struct consumer_socket *sock, |
1110 | struct consumer_output *dst, struct lttcomm_consumer_msg *msg, | |
ac2f30af | 1111 | const int *fds, size_t nb_fd) |
00e2e675 DG |
1112 | { |
1113 | int ret; | |
1114 | ||
a0377dfe FD |
1115 | LTTNG_ASSERT(msg); |
1116 | LTTNG_ASSERT(dst); | |
1117 | LTTNG_ASSERT(sock); | |
1118 | LTTNG_ASSERT(fds); | |
00e2e675 | 1119 | |
52898cb1 | 1120 | ret = consumer_send_msg(sock, msg); |
f50f23d9 DG |
1121 | if (ret < 0) { |
1122 | goto error; | |
1123 | } | |
1124 | ||
00e2e675 DG |
1125 | ret = consumer_send_fds(sock, fds, nb_fd); |
1126 | if (ret < 0) { | |
1127 | goto error; | |
1128 | } | |
1129 | ||
1130 | error: | |
1131 | return ret; | |
1132 | } | |
37278a1e DG |
1133 | |
1134 | /* | |
1135 | * Send relayd socket to consumer associated with a session name. | |
1136 | * | |
43fade62 JG |
1137 | * The consumer socket lock must be held by the caller. |
1138 | * | |
37278a1e DG |
1139 | * On success return positive value. On error, negative value. |
1140 | */ | |
f50f23d9 | 1141 | int consumer_send_relayd_socket(struct consumer_socket *consumer_sock, |
6151a90f | 1142 | struct lttcomm_relayd_sock *rsock, struct consumer_output *consumer, |
d3e2ba59 | 1143 | enum lttng_stream_type type, uint64_t session_id, |
fb9a95c4 | 1144 | const char *session_name, const char *hostname, |
6fa5fe7c | 1145 | const char *base_path, int session_live_timer, |
46ef2188 MD |
1146 | const uint64_t *current_chunk_id, time_t session_creation_time, |
1147 | bool session_name_contains_creation_time) | |
37278a1e DG |
1148 | { |
1149 | int ret; | |
7966af57 | 1150 | int fd; |
37278a1e DG |
1151 | struct lttcomm_consumer_msg msg; |
1152 | ||
1153 | /* Code flow error. Safety net. */ | |
a0377dfe FD |
1154 | LTTNG_ASSERT(rsock); |
1155 | LTTNG_ASSERT(consumer); | |
1156 | LTTNG_ASSERT(consumer_sock); | |
37278a1e | 1157 | |
53efb85a | 1158 | memset(&msg, 0, sizeof(msg)); |
37278a1e DG |
1159 | /* Bail out if consumer is disabled */ |
1160 | if (!consumer->enabled) { | |
f73fabfd | 1161 | ret = LTTNG_OK; |
37278a1e DG |
1162 | goto error; |
1163 | } | |
1164 | ||
d3e2ba59 | 1165 | if (type == LTTNG_STREAM_CONTROL) { |
ecd1a12f | 1166 | char output_path[LTTNG_PATH_MAX] = {}; |
07aa2e42 | 1167 | uint64_t relayd_session_id; |
ecd1a12f | 1168 | |
412d7227 | 1169 | ret = relayd_create_session(rsock, &relayd_session_id, |
6fa5fe7c | 1170 | session_name, hostname, base_path, |
412d7227 SM |
1171 | session_live_timer, consumer->snapshot, |
1172 | session_id, the_sessiond_uuid, current_chunk_id, | |
46ef2188 | 1173 | session_creation_time, |
ecd1a12f MD |
1174 | session_name_contains_creation_time, |
1175 | output_path); | |
d3e2ba59 JD |
1176 | if (ret < 0) { |
1177 | /* Close the control socket. */ | |
1178 | (void) relayd_close(rsock); | |
1179 | goto error; | |
1180 | } | |
07aa2e42 | 1181 | msg.u.relayd_sock.relayd_session_id = relayd_session_id; |
ecd1a12f MD |
1182 | DBG("Created session on relay, output path reply: %s", |
1183 | output_path); | |
d3e2ba59 JD |
1184 | } |
1185 | ||
37278a1e DG |
1186 | msg.cmd_type = LTTNG_CONSUMER_ADD_RELAYD_SOCKET; |
1187 | /* | |
1188 | * Assign network consumer output index using the temporary consumer since | |
1189 | * this call should only be made from within a set_consumer_uri() function | |
1190 | * call in the session daemon. | |
1191 | */ | |
1192 | msg.u.relayd_sock.net_index = consumer->net_seq_index; | |
1193 | msg.u.relayd_sock.type = type; | |
46e6455f | 1194 | msg.u.relayd_sock.session_id = session_id; |
4222116f JR |
1195 | msg.u.relayd_sock.major = rsock->major; |
1196 | msg.u.relayd_sock.minor = rsock->minor; | |
1197 | msg.u.relayd_sock.relayd_socket_protocol = rsock->sock.proto; | |
37278a1e | 1198 | |
9363801e | 1199 | DBG3("Sending relayd sock info to consumer on %d", *consumer_sock->fd_ptr); |
52898cb1 | 1200 | ret = consumer_send_msg(consumer_sock, &msg); |
f50f23d9 DG |
1201 | if (ret < 0) { |
1202 | goto error; | |
1203 | } | |
1204 | ||
37278a1e | 1205 | DBG3("Sending relayd socket file descriptor to consumer"); |
7966af57 SM |
1206 | fd = rsock->sock.fd; |
1207 | ret = consumer_send_fds(consumer_sock, &fd, 1); | |
37278a1e DG |
1208 | if (ret < 0) { |
1209 | goto error; | |
1210 | } | |
1211 | ||
1212 | DBG2("Consumer relayd socket sent"); | |
1213 | ||
1214 | error: | |
1215 | return ret; | |
1216 | } | |
173af62f | 1217 | |
62c43103 JD |
1218 | static |
1219 | int consumer_send_pipe(struct consumer_socket *consumer_sock, | |
1220 | enum lttng_consumer_command cmd, int pipe) | |
e9404c27 JG |
1221 | { |
1222 | int ret; | |
1223 | struct lttcomm_consumer_msg msg; | |
62c43103 JD |
1224 | const char *pipe_name; |
1225 | const char *command_name; | |
1226 | ||
1227 | switch (cmd) { | |
1228 | case LTTNG_CONSUMER_SET_CHANNEL_MONITOR_PIPE: | |
1229 | pipe_name = "channel monitor"; | |
1230 | command_name = "SET_CHANNEL_MONITOR_PIPE"; | |
1231 | break; | |
62c43103 JD |
1232 | default: |
1233 | ERR("Unexpected command received in %s (cmd = %d)", __func__, | |
1234 | (int) cmd); | |
1235 | abort(); | |
1236 | } | |
e9404c27 JG |
1237 | |
1238 | /* Code flow error. Safety net. */ | |
1239 | ||
1240 | memset(&msg, 0, sizeof(msg)); | |
62c43103 | 1241 | msg.cmd_type = cmd; |
e9404c27 | 1242 | |
3e4dc117 | 1243 | pthread_mutex_lock(consumer_sock->lock); |
62c43103 | 1244 | DBG3("Sending %s command to consumer", command_name); |
e9404c27 JG |
1245 | ret = consumer_send_msg(consumer_sock, &msg); |
1246 | if (ret < 0) { | |
1247 | goto error; | |
1248 | } | |
1249 | ||
62c43103 JD |
1250 | DBG3("Sending %s pipe %d to consumer on socket %d", |
1251 | pipe_name, | |
e9404c27 JG |
1252 | pipe, *consumer_sock->fd_ptr); |
1253 | ret = consumer_send_fds(consumer_sock, &pipe, 1); | |
1254 | if (ret < 0) { | |
1255 | goto error; | |
1256 | } | |
1257 | ||
62c43103 | 1258 | DBG2("%s pipe successfully sent", pipe_name); |
e9404c27 | 1259 | error: |
3e4dc117 | 1260 | pthread_mutex_unlock(consumer_sock->lock); |
e9404c27 JG |
1261 | return ret; |
1262 | } | |
1263 | ||
62c43103 JD |
1264 | int consumer_send_channel_monitor_pipe(struct consumer_socket *consumer_sock, |
1265 | int pipe) | |
1266 | { | |
1267 | return consumer_send_pipe(consumer_sock, | |
1268 | LTTNG_CONSUMER_SET_CHANNEL_MONITOR_PIPE, pipe); | |
1269 | } | |
1270 | ||
806e2684 | 1271 | /* |
5e280d77 MD |
1272 | * Ask the consumer if the data is pending for the specific session id. |
1273 | * Returns 1 if data is pending, 0 otherwise, or < 0 on error. | |
806e2684 | 1274 | */ |
d88aee68 | 1275 | int consumer_is_data_pending(uint64_t session_id, |
806e2684 DG |
1276 | struct consumer_output *consumer) |
1277 | { | |
1278 | int ret; | |
6d805429 | 1279 | int32_t ret_code = 0; /* Default is that the data is NOT pending */ |
806e2684 DG |
1280 | struct consumer_socket *socket; |
1281 | struct lttng_ht_iter iter; | |
1282 | struct lttcomm_consumer_msg msg; | |
1283 | ||
a0377dfe | 1284 | LTTNG_ASSERT(consumer); |
806e2684 | 1285 | |
53efb85a | 1286 | DBG3("Consumer data pending for id %" PRIu64, session_id); |
806e2684 | 1287 | |
53efb85a MD |
1288 | memset(&msg, 0, sizeof(msg)); |
1289 | msg.cmd_type = LTTNG_CONSUMER_DATA_PENDING; | |
d88aee68 | 1290 | msg.u.data_pending.session_id = session_id; |
806e2684 | 1291 | |
c8f59ee5 | 1292 | /* Send command for each consumer */ |
b82c5c4d | 1293 | rcu_read_lock(); |
806e2684 DG |
1294 | cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket, |
1295 | node.node) { | |
806e2684 | 1296 | pthread_mutex_lock(socket->lock); |
52898cb1 | 1297 | ret = consumer_socket_send(socket, &msg, sizeof(msg)); |
806e2684 | 1298 | if (ret < 0) { |
806e2684 | 1299 | pthread_mutex_unlock(socket->lock); |
b82c5c4d | 1300 | goto error_unlock; |
806e2684 DG |
1301 | } |
1302 | ||
f50f23d9 DG |
1303 | /* |
1304 | * No need for a recv reply status because the answer to the command is | |
1305 | * the reply status message. | |
1306 | */ | |
1307 | ||
52898cb1 DG |
1308 | ret = consumer_socket_recv(socket, &ret_code, sizeof(ret_code)); |
1309 | if (ret < 0) { | |
806e2684 | 1310 | pthread_mutex_unlock(socket->lock); |
b82c5c4d | 1311 | goto error_unlock; |
806e2684 | 1312 | } |
806e2684 DG |
1313 | pthread_mutex_unlock(socket->lock); |
1314 | ||
6d805429 | 1315 | if (ret_code == 1) { |
806e2684 DG |
1316 | break; |
1317 | } | |
1318 | } | |
b82c5c4d | 1319 | rcu_read_unlock(); |
806e2684 | 1320 | |
d88aee68 DG |
1321 | DBG("Consumer data is %s pending for session id %" PRIu64, |
1322 | ret_code == 1 ? "" : "NOT", session_id); | |
806e2684 DG |
1323 | return ret_code; |
1324 | ||
b82c5c4d DG |
1325 | error_unlock: |
1326 | rcu_read_unlock(); | |
806e2684 DG |
1327 | return -1; |
1328 | } | |
7972aab2 DG |
1329 | |
1330 | /* | |
1331 | * Send a flush command to consumer using the given channel key. | |
1332 | * | |
1333 | * Return 0 on success else a negative value. | |
1334 | */ | |
1335 | int consumer_flush_channel(struct consumer_socket *socket, uint64_t key) | |
1336 | { | |
1337 | int ret; | |
1338 | struct lttcomm_consumer_msg msg; | |
1339 | ||
a0377dfe | 1340 | LTTNG_ASSERT(socket); |
7972aab2 DG |
1341 | |
1342 | DBG2("Consumer flush channel key %" PRIu64, key); | |
1343 | ||
53efb85a | 1344 | memset(&msg, 0, sizeof(msg)); |
7972aab2 DG |
1345 | msg.cmd_type = LTTNG_CONSUMER_FLUSH_CHANNEL; |
1346 | msg.u.flush_channel.key = key; | |
1347 | ||
1348 | pthread_mutex_lock(socket->lock); | |
1349 | health_code_update(); | |
1350 | ||
1351 | ret = consumer_send_msg(socket, &msg); | |
1352 | if (ret < 0) { | |
1353 | goto end; | |
1354 | } | |
1355 | ||
1356 | end: | |
1357 | health_code_update(); | |
1358 | pthread_mutex_unlock(socket->lock); | |
1359 | return ret; | |
1360 | } | |
1361 | ||
0dd01979 MD |
1362 | /* |
1363 | * Send a clear quiescent command to consumer using the given channel key. | |
1364 | * | |
1365 | * Return 0 on success else a negative value. | |
1366 | */ | |
1367 | int consumer_clear_quiescent_channel(struct consumer_socket *socket, uint64_t key) | |
1368 | { | |
1369 | int ret; | |
1370 | struct lttcomm_consumer_msg msg; | |
1371 | ||
a0377dfe | 1372 | LTTNG_ASSERT(socket); |
0dd01979 MD |
1373 | |
1374 | DBG2("Consumer clear quiescent channel key %" PRIu64, key); | |
1375 | ||
1376 | memset(&msg, 0, sizeof(msg)); | |
1377 | msg.cmd_type = LTTNG_CONSUMER_CLEAR_QUIESCENT_CHANNEL; | |
1378 | msg.u.clear_quiescent_channel.key = key; | |
1379 | ||
1380 | pthread_mutex_lock(socket->lock); | |
1381 | health_code_update(); | |
1382 | ||
1383 | ret = consumer_send_msg(socket, &msg); | |
1384 | if (ret < 0) { | |
1385 | goto end; | |
1386 | } | |
1387 | ||
1388 | end: | |
1389 | health_code_update(); | |
1390 | pthread_mutex_unlock(socket->lock); | |
1391 | return ret; | |
1392 | } | |
1393 | ||
7972aab2 | 1394 | /* |
dc2bbdae MD |
1395 | * Send a close metadata command to consumer using the given channel key. |
1396 | * Called with registry lock held. | |
7972aab2 DG |
1397 | * |
1398 | * Return 0 on success else a negative value. | |
1399 | */ | |
1400 | int consumer_close_metadata(struct consumer_socket *socket, | |
1401 | uint64_t metadata_key) | |
1402 | { | |
1403 | int ret; | |
1404 | struct lttcomm_consumer_msg msg; | |
1405 | ||
a0377dfe | 1406 | LTTNG_ASSERT(socket); |
7972aab2 DG |
1407 | |
1408 | DBG2("Consumer close metadata channel key %" PRIu64, metadata_key); | |
1409 | ||
53efb85a | 1410 | memset(&msg, 0, sizeof(msg)); |
7972aab2 DG |
1411 | msg.cmd_type = LTTNG_CONSUMER_CLOSE_METADATA; |
1412 | msg.u.close_metadata.key = metadata_key; | |
1413 | ||
1414 | pthread_mutex_lock(socket->lock); | |
1415 | health_code_update(); | |
1416 | ||
1417 | ret = consumer_send_msg(socket, &msg); | |
1418 | if (ret < 0) { | |
1419 | goto end; | |
1420 | } | |
1421 | ||
1422 | end: | |
1423 | health_code_update(); | |
1424 | pthread_mutex_unlock(socket->lock); | |
1425 | return ret; | |
1426 | } | |
1427 | ||
1428 | /* | |
1429 | * Send a setup metdata command to consumer using the given channel key. | |
1430 | * | |
1431 | * Return 0 on success else a negative value. | |
1432 | */ | |
1433 | int consumer_setup_metadata(struct consumer_socket *socket, | |
1434 | uint64_t metadata_key) | |
1435 | { | |
1436 | int ret; | |
1437 | struct lttcomm_consumer_msg msg; | |
1438 | ||
a0377dfe | 1439 | LTTNG_ASSERT(socket); |
7972aab2 DG |
1440 | |
1441 | DBG2("Consumer setup metadata channel key %" PRIu64, metadata_key); | |
1442 | ||
53efb85a | 1443 | memset(&msg, 0, sizeof(msg)); |
7972aab2 DG |
1444 | msg.cmd_type = LTTNG_CONSUMER_SETUP_METADATA; |
1445 | msg.u.setup_metadata.key = metadata_key; | |
1446 | ||
1447 | pthread_mutex_lock(socket->lock); | |
1448 | health_code_update(); | |
1449 | ||
1450 | ret = consumer_send_msg(socket, &msg); | |
1451 | if (ret < 0) { | |
1452 | goto end; | |
1453 | } | |
1454 | ||
1455 | end: | |
1456 | health_code_update(); | |
1457 | pthread_mutex_unlock(socket->lock); | |
1458 | return ret; | |
1459 | } | |
1460 | ||
1461 | /* | |
dc2bbdae MD |
1462 | * Send metadata string to consumer. |
1463 | * RCU read-side lock must be held to guarantee existence of socket. | |
7972aab2 DG |
1464 | * |
1465 | * Return 0 on success else a negative value. | |
1466 | */ | |
1467 | int consumer_push_metadata(struct consumer_socket *socket, | |
1468 | uint64_t metadata_key, char *metadata_str, size_t len, | |
93ec662e | 1469 | size_t target_offset, uint64_t version) |
7972aab2 DG |
1470 | { |
1471 | int ret; | |
1472 | struct lttcomm_consumer_msg msg; | |
1473 | ||
a0377dfe | 1474 | LTTNG_ASSERT(socket); |
48b7cdc2 | 1475 | ASSERT_RCU_READ_LOCKED(); |
7972aab2 | 1476 | |
9363801e | 1477 | DBG2("Consumer push metadata to consumer socket %d", *socket->fd_ptr); |
7972aab2 | 1478 | |
dc2bbdae MD |
1479 | pthread_mutex_lock(socket->lock); |
1480 | ||
53efb85a | 1481 | memset(&msg, 0, sizeof(msg)); |
7972aab2 DG |
1482 | msg.cmd_type = LTTNG_CONSUMER_PUSH_METADATA; |
1483 | msg.u.push_metadata.key = metadata_key; | |
1484 | msg.u.push_metadata.target_offset = target_offset; | |
1485 | msg.u.push_metadata.len = len; | |
93ec662e | 1486 | msg.u.push_metadata.version = version; |
7972aab2 | 1487 | |
7972aab2 DG |
1488 | health_code_update(); |
1489 | ret = consumer_send_msg(socket, &msg); | |
331744e3 | 1490 | if (ret < 0 || len == 0) { |
7972aab2 DG |
1491 | goto end; |
1492 | } | |
1493 | ||
9363801e DG |
1494 | DBG3("Consumer pushing metadata on sock %d of len %zu", *socket->fd_ptr, |
1495 | len); | |
7972aab2 | 1496 | |
52898cb1 | 1497 | ret = consumer_socket_send(socket, metadata_str, len); |
7972aab2 DG |
1498 | if (ret < 0) { |
1499 | goto end; | |
1500 | } | |
1501 | ||
1502 | health_code_update(); | |
1503 | ret = consumer_recv_status_reply(socket); | |
1504 | if (ret < 0) { | |
1505 | goto end; | |
1506 | } | |
1507 | ||
1508 | end: | |
dc2bbdae | 1509 | pthread_mutex_unlock(socket->lock); |
7972aab2 | 1510 | health_code_update(); |
7972aab2 DG |
1511 | return ret; |
1512 | } | |
6dc3064a DG |
1513 | |
1514 | /* | |
1515 | * Ask the consumer to snapshot a specific channel using the key. | |
1516 | * | |
9a654598 | 1517 | * Returns LTTNG_OK on success or else an LTTng error code. |
6dc3064a | 1518 | */ |
9a654598 | 1519 | enum lttng_error_code consumer_snapshot_channel(struct consumer_socket *socket, |
348a81dc | 1520 | uint64_t key, const struct consumer_output *output, int metadata, |
f46376a1 | 1521 | const char *channel_path, |
d2956687 | 1522 | uint64_t nb_packets_per_stream) |
6dc3064a DG |
1523 | { |
1524 | int ret; | |
9a654598 | 1525 | enum lttng_error_code status = LTTNG_OK; |
6dc3064a DG |
1526 | struct lttcomm_consumer_msg msg; |
1527 | ||
a0377dfe FD |
1528 | LTTNG_ASSERT(socket); |
1529 | LTTNG_ASSERT(output); | |
6dc3064a DG |
1530 | |
1531 | DBG("Consumer snapshot channel key %" PRIu64, key); | |
1532 | ||
ee91bab2 | 1533 | memset(&msg, 0, sizeof(msg)); |
6dc3064a DG |
1534 | msg.cmd_type = LTTNG_CONSUMER_SNAPSHOT_CHANNEL; |
1535 | msg.u.snapshot_channel.key = key; | |
d07ceecd | 1536 | msg.u.snapshot_channel.nb_packets_per_stream = nb_packets_per_stream; |
6dc3064a DG |
1537 | msg.u.snapshot_channel.metadata = metadata; |
1538 | ||
348a81dc | 1539 | if (output->type == CONSUMER_DST_NET) { |
d2956687 | 1540 | msg.u.snapshot_channel.relayd_id = |
348a81dc | 1541 | output->net_seq_index; |
6dc3064a | 1542 | msg.u.snapshot_channel.use_relayd = 1; |
6dc3064a | 1543 | } else { |
07b86b52 | 1544 | msg.u.snapshot_channel.relayd_id = (uint64_t) -1ULL; |
d2956687 JG |
1545 | } |
1546 | ret = lttng_strncpy(msg.u.snapshot_channel.pathname, | |
1547 | channel_path, | |
1548 | sizeof(msg.u.snapshot_channel.pathname)); | |
1549 | if (ret < 0) { | |
1550 | ERR("Snapshot path exceeds the maximal allowed length of %zu bytes (%zu bytes required) with path \"%s\"", | |
1551 | sizeof(msg.u.snapshot_channel.pathname), | |
1552 | strlen(channel_path), | |
1553 | channel_path); | |
1554 | status = LTTNG_ERR_SNAPSHOT_FAIL; | |
1555 | goto error; | |
6dc3064a DG |
1556 | } |
1557 | ||
1558 | health_code_update(); | |
9d1103e6 | 1559 | pthread_mutex_lock(socket->lock); |
6dc3064a | 1560 | ret = consumer_send_msg(socket, &msg); |
9d1103e6 | 1561 | pthread_mutex_unlock(socket->lock); |
6dc3064a | 1562 | if (ret < 0) { |
9bbfb88c MD |
1563 | switch (-ret) { |
1564 | case LTTCOMM_CONSUMERD_CHAN_NOT_FOUND: | |
9a654598 | 1565 | status = LTTNG_ERR_CHAN_NOT_FOUND; |
9bbfb88c MD |
1566 | break; |
1567 | default: | |
9a654598 | 1568 | status = LTTNG_ERR_SNAPSHOT_FAIL; |
9bbfb88c MD |
1569 | break; |
1570 | } | |
6dc3064a DG |
1571 | goto error; |
1572 | } | |
1573 | ||
1574 | error: | |
1575 | health_code_update(); | |
9a654598 | 1576 | return status; |
6dc3064a | 1577 | } |
fb83fe64 JD |
1578 | |
1579 | /* | |
1580 | * Ask the consumer the number of discarded events for a channel. | |
1581 | */ | |
1582 | int consumer_get_discarded_events(uint64_t session_id, uint64_t channel_key, | |
1583 | struct consumer_output *consumer, uint64_t *discarded) | |
1584 | { | |
1585 | int ret; | |
1586 | struct consumer_socket *socket; | |
1587 | struct lttng_ht_iter iter; | |
1588 | struct lttcomm_consumer_msg msg; | |
1589 | ||
a0377dfe | 1590 | LTTNG_ASSERT(consumer); |
fb83fe64 JD |
1591 | |
1592 | DBG3("Consumer discarded events id %" PRIu64, session_id); | |
1593 | ||
1594 | memset(&msg, 0, sizeof(msg)); | |
1595 | msg.cmd_type = LTTNG_CONSUMER_DISCARDED_EVENTS; | |
1596 | msg.u.discarded_events.session_id = session_id; | |
1597 | msg.u.discarded_events.channel_key = channel_key; | |
1598 | ||
1599 | *discarded = 0; | |
1600 | ||
1601 | /* Send command for each consumer */ | |
1602 | rcu_read_lock(); | |
1603 | cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket, | |
1604 | node.node) { | |
1605 | uint64_t consumer_discarded = 0; | |
1606 | pthread_mutex_lock(socket->lock); | |
1607 | ret = consumer_socket_send(socket, &msg, sizeof(msg)); | |
1608 | if (ret < 0) { | |
1609 | pthread_mutex_unlock(socket->lock); | |
1610 | goto end; | |
1611 | } | |
1612 | ||
1613 | /* | |
1614 | * No need for a recv reply status because the answer to the | |
1615 | * command is the reply status message. | |
1616 | */ | |
1617 | ret = consumer_socket_recv(socket, &consumer_discarded, | |
1618 | sizeof(consumer_discarded)); | |
1619 | if (ret < 0) { | |
1620 | ERR("get discarded events"); | |
1621 | pthread_mutex_unlock(socket->lock); | |
1622 | goto end; | |
1623 | } | |
1624 | pthread_mutex_unlock(socket->lock); | |
1625 | *discarded += consumer_discarded; | |
1626 | } | |
1627 | ret = 0; | |
1628 | DBG("Consumer discarded %" PRIu64 " events in session id %" PRIu64, | |
1629 | *discarded, session_id); | |
1630 | ||
1631 | end: | |
1632 | rcu_read_unlock(); | |
1633 | return ret; | |
1634 | } | |
1635 | ||
1636 | /* | |
1637 | * Ask the consumer the number of lost packets for a channel. | |
1638 | */ | |
1639 | int consumer_get_lost_packets(uint64_t session_id, uint64_t channel_key, | |
1640 | struct consumer_output *consumer, uint64_t *lost) | |
1641 | { | |
1642 | int ret; | |
1643 | struct consumer_socket *socket; | |
1644 | struct lttng_ht_iter iter; | |
1645 | struct lttcomm_consumer_msg msg; | |
1646 | ||
a0377dfe | 1647 | LTTNG_ASSERT(consumer); |
fb83fe64 JD |
1648 | |
1649 | DBG3("Consumer lost packets id %" PRIu64, session_id); | |
1650 | ||
1651 | memset(&msg, 0, sizeof(msg)); | |
1652 | msg.cmd_type = LTTNG_CONSUMER_LOST_PACKETS; | |
1653 | msg.u.lost_packets.session_id = session_id; | |
1654 | msg.u.lost_packets.channel_key = channel_key; | |
1655 | ||
1656 | *lost = 0; | |
1657 | ||
1658 | /* Send command for each consumer */ | |
1659 | rcu_read_lock(); | |
1660 | cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket, | |
1661 | node.node) { | |
1662 | uint64_t consumer_lost = 0; | |
1663 | pthread_mutex_lock(socket->lock); | |
1664 | ret = consumer_socket_send(socket, &msg, sizeof(msg)); | |
1665 | if (ret < 0) { | |
1666 | pthread_mutex_unlock(socket->lock); | |
1667 | goto end; | |
1668 | } | |
1669 | ||
1670 | /* | |
1671 | * No need for a recv reply status because the answer to the | |
1672 | * command is the reply status message. | |
1673 | */ | |
1674 | ret = consumer_socket_recv(socket, &consumer_lost, | |
1675 | sizeof(consumer_lost)); | |
1676 | if (ret < 0) { | |
1677 | ERR("get lost packets"); | |
1678 | pthread_mutex_unlock(socket->lock); | |
1679 | goto end; | |
1680 | } | |
1681 | pthread_mutex_unlock(socket->lock); | |
1682 | *lost += consumer_lost; | |
1683 | } | |
1684 | ret = 0; | |
1685 | DBG("Consumer lost %" PRIu64 " packets in session id %" PRIu64, | |
1686 | *lost, session_id); | |
1687 | ||
1688 | end: | |
1689 | rcu_read_unlock(); | |
1690 | return ret; | |
1691 | } | |
a1ae2ea5 | 1692 | |
5c408ad8 JD |
1693 | /* |
1694 | * Ask the consumer to rotate a channel. | |
5c408ad8 JD |
1695 | * |
1696 | * The new_chunk_id is the session->rotate_count that has been incremented | |
1697 | * when the rotation started. On the relay, this allows to keep track in which | |
1698 | * chunk each stream is currently writing to (for the rotate_pending operation). | |
1699 | */ | |
1700 | int consumer_rotate_channel(struct consumer_socket *socket, uint64_t key, | |
f46376a1 | 1701 | struct consumer_output *output, |
d2956687 | 1702 | bool is_metadata_channel) |
5c408ad8 JD |
1703 | { |
1704 | int ret; | |
1705 | struct lttcomm_consumer_msg msg; | |
1706 | ||
a0377dfe | 1707 | LTTNG_ASSERT(socket); |
5c408ad8 JD |
1708 | |
1709 | DBG("Consumer rotate channel key %" PRIu64, key); | |
1710 | ||
1711 | pthread_mutex_lock(socket->lock); | |
1712 | memset(&msg, 0, sizeof(msg)); | |
1713 | msg.cmd_type = LTTNG_CONSUMER_ROTATE_CHANNEL; | |
1714 | msg.u.rotate_channel.key = key; | |
1715 | msg.u.rotate_channel.metadata = !!is_metadata_channel; | |
5c408ad8 JD |
1716 | |
1717 | if (output->type == CONSUMER_DST_NET) { | |
1718 | msg.u.rotate_channel.relayd_id = output->net_seq_index; | |
5c408ad8 JD |
1719 | } else { |
1720 | msg.u.rotate_channel.relayd_id = (uint64_t) -1ULL; | |
5c408ad8 JD |
1721 | } |
1722 | ||
1723 | health_code_update(); | |
1724 | ret = consumer_send_msg(socket, &msg); | |
1725 | if (ret < 0) { | |
20f37cb4 MD |
1726 | switch (-ret) { |
1727 | case LTTCOMM_CONSUMERD_CHAN_NOT_FOUND: | |
1728 | ret = -LTTNG_ERR_CHAN_NOT_FOUND; | |
1729 | break; | |
1730 | default: | |
1731 | ret = -LTTNG_ERR_ROTATION_FAIL_CONSUMER; | |
1732 | break; | |
1733 | } | |
5c408ad8 JD |
1734 | goto error; |
1735 | } | |
5c408ad8 JD |
1736 | error: |
1737 | pthread_mutex_unlock(socket->lock); | |
1738 | health_code_update(); | |
1739 | return ret; | |
1740 | } | |
1741 | ||
04ed9e10 JG |
1742 | int consumer_open_channel_packets(struct consumer_socket *socket, uint64_t key) |
1743 | { | |
1744 | int ret; | |
7966af57 | 1745 | lttcomm_consumer_msg msg = { |
04ed9e10 | 1746 | .cmd_type = LTTNG_CONSUMER_OPEN_CHANNEL_PACKETS, |
1c9a0b0e | 1747 | .u = {}, |
04ed9e10 | 1748 | }; |
7966af57 | 1749 | msg.u.open_channel_packets.key = key; |
04ed9e10 | 1750 | |
a0377dfe | 1751 | LTTNG_ASSERT(socket); |
04ed9e10 JG |
1752 | |
1753 | DBG("Consumer open channel packets: channel key = %" PRIu64, key); | |
1754 | ||
1755 | health_code_update(); | |
1756 | ||
1757 | pthread_mutex_lock(socket->lock); | |
1758 | ret = consumer_send_msg(socket, &msg); | |
1759 | pthread_mutex_unlock(socket->lock); | |
1760 | if (ret < 0) { | |
1761 | goto error_socket; | |
1762 | } | |
1763 | ||
1764 | error_socket: | |
1765 | health_code_update(); | |
1766 | return ret; | |
1767 | } | |
1768 | ||
51a4828f MD |
1769 | int consumer_clear_channel(struct consumer_socket *socket, uint64_t key) |
1770 | { | |
1771 | int ret; | |
1772 | struct lttcomm_consumer_msg msg; | |
1773 | ||
a0377dfe | 1774 | LTTNG_ASSERT(socket); |
51a4828f MD |
1775 | |
1776 | DBG("Consumer clear channel %" PRIu64, key); | |
1777 | ||
1778 | memset(&msg, 0, sizeof(msg)); | |
1779 | msg.cmd_type = LTTNG_CONSUMER_CLEAR_CHANNEL; | |
1780 | msg.u.clear_channel.key = key; | |
1781 | ||
1782 | health_code_update(); | |
1783 | ||
1784 | pthread_mutex_lock(socket->lock); | |
1785 | ret = consumer_send_msg(socket, &msg); | |
1786 | if (ret < 0) { | |
1787 | goto error_socket; | |
1788 | } | |
1789 | ||
1790 | error_socket: | |
1791 | pthread_mutex_unlock(socket->lock); | |
1792 | ||
1793 | health_code_update(); | |
1794 | return ret; | |
1795 | } | |
1796 | ||
d2956687 | 1797 | int consumer_init(struct consumer_socket *socket, |
328c2fe7 | 1798 | const lttng_uuid& sessiond_uuid) |
00fb02ac JD |
1799 | { |
1800 | int ret; | |
d2956687 JG |
1801 | struct lttcomm_consumer_msg msg = { |
1802 | .cmd_type = LTTNG_CONSUMER_INIT, | |
1c9a0b0e | 1803 | .u = {}, |
d2956687 | 1804 | }; |
00fb02ac | 1805 | |
a0377dfe | 1806 | LTTNG_ASSERT(socket); |
00fb02ac | 1807 | |
d2956687 | 1808 | DBG("Sending consumer initialization command"); |
328c2fe7 | 1809 | std::copy(sessiond_uuid.begin(), sessiond_uuid.end(), msg.u.init.sessiond_uuid); |
00fb02ac JD |
1810 | |
1811 | health_code_update(); | |
1812 | ret = consumer_send_msg(socket, &msg); | |
1813 | if (ret < 0) { | |
1814 | goto error; | |
1815 | } | |
1816 | ||
d88744a4 JD |
1817 | error: |
1818 | health_code_update(); | |
1819 | return ret; | |
1820 | } | |
1821 | ||
1822 | /* | |
d2956687 | 1823 | * Ask the consumer to create a new chunk for a given session. |
92816cc3 | 1824 | * |
d2956687 | 1825 | * Called with the consumer socket lock held. |
92816cc3 | 1826 | */ |
d2956687 JG |
1827 | int consumer_create_trace_chunk(struct consumer_socket *socket, |
1828 | uint64_t relayd_id, uint64_t session_id, | |
5da88b0f MD |
1829 | struct lttng_trace_chunk *chunk, |
1830 | const char *domain_subdir) | |
92816cc3 JG |
1831 | { |
1832 | int ret; | |
d2956687 JG |
1833 | enum lttng_trace_chunk_status chunk_status; |
1834 | struct lttng_credentials chunk_credentials; | |
5da88b0f MD |
1835 | const struct lttng_directory_handle *chunk_directory_handle = NULL; |
1836 | struct lttng_directory_handle *domain_handle = NULL; | |
1837 | int domain_dirfd; | |
d2956687 | 1838 | const char *chunk_name; |
913a542b | 1839 | bool chunk_name_overridden; |
d2956687 JG |
1840 | uint64_t chunk_id; |
1841 | time_t creation_timestamp; | |
1842 | char creation_timestamp_buffer[ISO8601_STR_LEN]; | |
1843 | const char *creation_timestamp_str = "(none)"; | |
1844 | const bool chunk_has_local_output = relayd_id == -1ULL; | |
69ebf37e | 1845 | enum lttng_trace_chunk_status tc_status; |
d2956687 JG |
1846 | struct lttcomm_consumer_msg msg = { |
1847 | .cmd_type = LTTNG_CONSUMER_CREATE_TRACE_CHUNK, | |
1c9a0b0e | 1848 | .u = {}, |
d2956687 | 1849 | }; |
7966af57 | 1850 | msg.u.create_trace_chunk.session_id = session_id; |
92816cc3 | 1851 | |
a0377dfe FD |
1852 | LTTNG_ASSERT(socket); |
1853 | LTTNG_ASSERT(chunk); | |
92816cc3 | 1854 | |
d2956687 JG |
1855 | if (relayd_id != -1ULL) { |
1856 | LTTNG_OPTIONAL_SET(&msg.u.create_trace_chunk.relayd_id, | |
1857 | relayd_id); | |
1858 | } | |
92816cc3 | 1859 | |
d2956687 | 1860 | chunk_status = lttng_trace_chunk_get_name(chunk, &chunk_name, |
913a542b | 1861 | &chunk_name_overridden); |
d2956687 JG |
1862 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK && |
1863 | chunk_status != LTTNG_TRACE_CHUNK_STATUS_NONE) { | |
1864 | ERR("Failed to get name of trace chunk"); | |
1865 | ret = -LTTNG_ERR_FATAL; | |
92816cc3 JG |
1866 | goto error; |
1867 | } | |
913a542b | 1868 | if (chunk_name_overridden) { |
d2956687 JG |
1869 | ret = lttng_strncpy(msg.u.create_trace_chunk.override_name, |
1870 | chunk_name, | |
1871 | sizeof(msg.u.create_trace_chunk.override_name)); | |
1872 | if (ret) { | |
1873 | ERR("Trace chunk name \"%s\" exceeds the maximal length allowed by the consumer protocol", | |
1874 | chunk_name); | |
1875 | ret = -LTTNG_ERR_FATAL; | |
1876 | goto error; | |
1877 | } | |
1878 | } | |
92816cc3 | 1879 | |
d2956687 JG |
1880 | chunk_status = lttng_trace_chunk_get_creation_timestamp(chunk, |
1881 | &creation_timestamp); | |
1882 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
1883 | ret = -LTTNG_ERR_FATAL; | |
92816cc3 JG |
1884 | goto error; |
1885 | } | |
d2956687 JG |
1886 | msg.u.create_trace_chunk.creation_timestamp = |
1887 | (uint64_t) creation_timestamp; | |
1888 | /* Only used for logging purposes. */ | |
1889 | ret = time_to_iso8601_str(creation_timestamp, | |
1890 | creation_timestamp_buffer, | |
1891 | sizeof(creation_timestamp_buffer)); | |
1892 | creation_timestamp_str = !ret ? creation_timestamp_buffer : | |
1893 | "(formatting error)"; | |
1894 | ||
1895 | chunk_status = lttng_trace_chunk_get_id(chunk, &chunk_id); | |
1896 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
1897 | /* | |
1898 | * Anonymous trace chunks should never be transmitted | |
1899 | * to remote peers (consumerd and relayd). They are used | |
1900 | * internally for backward-compatibility purposes. | |
1901 | */ | |
1902 | ret = -LTTNG_ERR_FATAL; | |
1903 | goto error; | |
1904 | } | |
1905 | msg.u.create_trace_chunk.chunk_id = chunk_id; | |
92816cc3 | 1906 | |
d2956687 | 1907 | if (chunk_has_local_output) { |
cbf53d23 | 1908 | chunk_status = lttng_trace_chunk_borrow_chunk_directory_handle( |
d2956687 JG |
1909 | chunk, &chunk_directory_handle); |
1910 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
1911 | ret = -LTTNG_ERR_FATAL; | |
1912 | goto error; | |
1913 | } | |
e5add6d0 JG |
1914 | chunk_status = lttng_trace_chunk_get_credentials( |
1915 | chunk, &chunk_credentials); | |
1916 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
1917 | /* | |
1918 | * Not associating credentials to a sessiond chunk is a | |
1919 | * fatal internal error. | |
1920 | */ | |
1921 | ret = -LTTNG_ERR_FATAL; | |
1922 | goto error; | |
1923 | } | |
69ebf37e JR |
1924 | tc_status = lttng_trace_chunk_create_subdirectory( |
1925 | chunk, domain_subdir); | |
1926 | if (tc_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
5da88b0f MD |
1927 | PERROR("Failed to create chunk domain output directory \"%s\"", |
1928 | domain_subdir); | |
1929 | ret = -LTTNG_ERR_FATAL; | |
1930 | goto error; | |
1931 | } | |
1932 | domain_handle = lttng_directory_handle_create_from_handle( | |
1933 | domain_subdir, | |
1934 | chunk_directory_handle); | |
1935 | if (!domain_handle) { | |
1936 | ret = -LTTNG_ERR_FATAL; | |
1937 | goto error; | |
1938 | } | |
1939 | ||
1940 | /* | |
1941 | * This will only compile on platforms that support | |
1942 | * dirfd (POSIX.2008). This is fine as the session daemon | |
1943 | * is only built for such platforms. | |
1944 | * | |
1945 | * The ownership of the chunk directory handle's is maintained | |
1946 | * by the trace chunk. | |
1947 | */ | |
1948 | domain_dirfd = lttng_directory_handle_get_dirfd( | |
1949 | domain_handle); | |
a0377dfe | 1950 | LTTNG_ASSERT(domain_dirfd >= 0); |
5da88b0f | 1951 | |
e5add6d0 | 1952 | msg.u.create_trace_chunk.credentials.value.uid = |
ff588497 | 1953 | lttng_credentials_get_uid(&chunk_credentials); |
e5add6d0 | 1954 | msg.u.create_trace_chunk.credentials.value.gid = |
ff588497 | 1955 | lttng_credentials_get_gid(&chunk_credentials); |
e5add6d0 | 1956 | msg.u.create_trace_chunk.credentials.is_set = 1; |
d2956687 | 1957 | } |
d88744a4 | 1958 | |
d2956687 JG |
1959 | DBG("Sending consumer create trace chunk command: relayd_id = %" PRId64 |
1960 | ", session_id = %" PRIu64 ", chunk_id = %" PRIu64 | |
1961 | ", creation_timestamp = %s", | |
1962 | relayd_id, session_id, chunk_id, | |
1963 | creation_timestamp_str); | |
d88744a4 JD |
1964 | health_code_update(); |
1965 | ret = consumer_send_msg(socket, &msg); | |
d2956687 | 1966 | health_code_update(); |
d88744a4 | 1967 | if (ret < 0) { |
d2956687 JG |
1968 | ERR("Trace chunk creation error on consumer"); |
1969 | ret = -LTTNG_ERR_CREATE_TRACE_CHUNK_FAIL_CONSUMER; | |
d88744a4 JD |
1970 | goto error; |
1971 | } | |
1972 | ||
d2956687 | 1973 | if (chunk_has_local_output) { |
5da88b0f | 1974 | DBG("Sending trace chunk domain directory fd to consumer"); |
d2956687 | 1975 | health_code_update(); |
5da88b0f | 1976 | ret = consumer_send_fds(socket, &domain_dirfd, 1); |
d2956687 JG |
1977 | health_code_update(); |
1978 | if (ret < 0) { | |
1979 | ERR("Trace chunk creation error on consumer"); | |
1980 | ret = -LTTNG_ERR_CREATE_TRACE_CHUNK_FAIL_CONSUMER; | |
1981 | goto error; | |
1982 | } | |
d88744a4 | 1983 | } |
00fb02ac | 1984 | error: |
5da88b0f | 1985 | lttng_directory_handle_put(domain_handle); |
00fb02ac JD |
1986 | return ret; |
1987 | } | |
1988 | ||
a1ae2ea5 | 1989 | /* |
d2956687 | 1990 | * Ask the consumer to close a trace chunk for a given session. |
a1ae2ea5 JD |
1991 | * |
1992 | * Called with the consumer socket lock held. | |
1993 | */ | |
d2956687 JG |
1994 | int consumer_close_trace_chunk(struct consumer_socket *socket, |
1995 | uint64_t relayd_id, uint64_t session_id, | |
ecd1a12f MD |
1996 | struct lttng_trace_chunk *chunk, |
1997 | char *closed_trace_chunk_path) | |
a1ae2ea5 JD |
1998 | { |
1999 | int ret; | |
d2956687 | 2000 | enum lttng_trace_chunk_status chunk_status; |
7966af57 SM |
2001 | lttcomm_consumer_msg msg = { |
2002 | .cmd_type = LTTNG_CONSUMER_CLOSE_TRACE_CHUNK, | |
1c9a0b0e | 2003 | .u = {}, |
d2956687 | 2004 | }; |
7966af57 SM |
2005 | msg.u.close_trace_chunk.session_id = session_id; |
2006 | ||
ecd1a12f | 2007 | struct lttcomm_consumer_close_trace_chunk_reply reply; |
d2956687 JG |
2008 | uint64_t chunk_id; |
2009 | time_t close_timestamp; | |
bbc4768c JG |
2010 | enum lttng_trace_chunk_command_type close_command; |
2011 | const char *close_command_name = "none"; | |
ecd1a12f | 2012 | struct lttng_dynamic_buffer path_reception_buffer; |
a1ae2ea5 | 2013 | |
a0377dfe | 2014 | LTTNG_ASSERT(socket); |
ecd1a12f | 2015 | lttng_dynamic_buffer_init(&path_reception_buffer); |
a1ae2ea5 | 2016 | |
d2956687 | 2017 | if (relayd_id != -1ULL) { |
bbc4768c JG |
2018 | LTTNG_OPTIONAL_SET( |
2019 | &msg.u.close_trace_chunk.relayd_id, relayd_id); | |
2020 | } | |
2021 | ||
2022 | chunk_status = lttng_trace_chunk_get_close_command( | |
2023 | chunk, &close_command); | |
2024 | switch (chunk_status) { | |
2025 | case LTTNG_TRACE_CHUNK_STATUS_OK: | |
2026 | LTTNG_OPTIONAL_SET(&msg.u.close_trace_chunk.close_command, | |
2027 | (uint32_t) close_command); | |
2028 | break; | |
2029 | case LTTNG_TRACE_CHUNK_STATUS_NONE: | |
2030 | break; | |
2031 | default: | |
2032 | ERR("Failed to get trace chunk close command"); | |
2033 | ret = -1; | |
2034 | goto error; | |
a1ae2ea5 JD |
2035 | } |
2036 | ||
d2956687 JG |
2037 | chunk_status = lttng_trace_chunk_get_id(chunk, &chunk_id); |
2038 | /* | |
2039 | * Anonymous trace chunks should never be transmitted to remote peers | |
2040 | * (consumerd and relayd). They are used internally for | |
2041 | * backward-compatibility purposes. | |
2042 | */ | |
a0377dfe | 2043 | LTTNG_ASSERT(chunk_status == LTTNG_TRACE_CHUNK_STATUS_OK); |
d2956687 JG |
2044 | msg.u.close_trace_chunk.chunk_id = chunk_id; |
2045 | ||
2046 | chunk_status = lttng_trace_chunk_get_close_timestamp(chunk, | |
2047 | &close_timestamp); | |
2048 | /* | |
2049 | * A trace chunk should be closed locally before being closed remotely. | |
2050 | * Otherwise, the close timestamp would never be transmitted to the | |
2051 | * peers. | |
2052 | */ | |
a0377dfe | 2053 | LTTNG_ASSERT(chunk_status == LTTNG_TRACE_CHUNK_STATUS_OK); |
d2956687 JG |
2054 | msg.u.close_trace_chunk.close_timestamp = (uint64_t) close_timestamp; |
2055 | ||
bbc4768c JG |
2056 | if (msg.u.close_trace_chunk.close_command.is_set) { |
2057 | close_command_name = lttng_trace_chunk_command_type_get_name( | |
2058 | close_command); | |
2059 | } | |
d2956687 | 2060 | DBG("Sending consumer close trace chunk command: relayd_id = %" PRId64 |
bbc4768c JG |
2061 | ", session_id = %" PRIu64 ", chunk_id = %" PRIu64 |
2062 | ", close command = \"%s\"", | |
2063 | relayd_id, session_id, chunk_id, close_command_name); | |
a1ae2ea5 JD |
2064 | |
2065 | health_code_update(); | |
ecd1a12f | 2066 | ret = consumer_socket_send(socket, &msg, sizeof(struct lttcomm_consumer_msg)); |
a1ae2ea5 | 2067 | if (ret < 0) { |
d2956687 | 2068 | ret = -LTTNG_ERR_CLOSE_TRACE_CHUNK_FAIL_CONSUMER; |
a1ae2ea5 JD |
2069 | goto error; |
2070 | } | |
ecd1a12f MD |
2071 | ret = consumer_socket_recv(socket, &reply, sizeof(reply)); |
2072 | if (ret < 0) { | |
2073 | ret = -LTTNG_ERR_CLOSE_TRACE_CHUNK_FAIL_CONSUMER; | |
2074 | goto error; | |
2075 | } | |
2076 | if (reply.path_length >= LTTNG_PATH_MAX) { | |
2077 | ERR("Invalid path returned by relay daemon: %" PRIu32 "bytes exceeds maximal allowed length of %d bytes", | |
2078 | reply.path_length, LTTNG_PATH_MAX); | |
2079 | ret = -LTTNG_ERR_INVALID_PROTOCOL; | |
2080 | goto error; | |
2081 | } | |
2082 | ret = lttng_dynamic_buffer_set_size(&path_reception_buffer, | |
2083 | reply.path_length); | |
2084 | if (ret) { | |
2085 | ERR("Failed to allocate reception buffer of path returned by the \"close trace chunk\" command"); | |
2086 | ret = -LTTNG_ERR_NOMEM; | |
2087 | goto error; | |
2088 | } | |
2089 | ret = consumer_socket_recv(socket, path_reception_buffer.data, | |
2090 | path_reception_buffer.size); | |
2091 | if (ret < 0) { | |
2092 | ERR("Communication error while receiving path of closed trace chunk"); | |
2093 | ret = -LTTNG_ERR_CLOSE_TRACE_CHUNK_FAIL_CONSUMER; | |
2094 | goto error; | |
2095 | } | |
2096 | if (path_reception_buffer.data[path_reception_buffer.size - 1] != '\0') { | |
2097 | ERR("Invalid path returned by relay daemon: not null-terminated"); | |
2098 | ret = -LTTNG_ERR_INVALID_PROTOCOL; | |
2099 | goto error; | |
2100 | } | |
2101 | if (closed_trace_chunk_path) { | |
2102 | /* | |
2103 | * closed_trace_chunk_path is assumed to have a length >= | |
2104 | * LTTNG_PATH_MAX | |
2105 | */ | |
2106 | memcpy(closed_trace_chunk_path, path_reception_buffer.data, | |
2107 | path_reception_buffer.size); | |
2108 | } | |
a1ae2ea5 | 2109 | error: |
ecd1a12f | 2110 | lttng_dynamic_buffer_reset(&path_reception_buffer); |
a1ae2ea5 JD |
2111 | health_code_update(); |
2112 | return ret; | |
2113 | } | |
3654ed19 | 2114 | |
d2956687 JG |
2115 | /* |
2116 | * Ask the consumer if a trace chunk exists. | |
2117 | * | |
2118 | * Called with the consumer socket lock held. | |
2119 | * Returns 0 on success, or a negative value on error. | |
2120 | */ | |
2121 | int consumer_trace_chunk_exists(struct consumer_socket *socket, | |
2122 | uint64_t relayd_id, uint64_t session_id, | |
2123 | struct lttng_trace_chunk *chunk, | |
2124 | enum consumer_trace_chunk_exists_status *result) | |
3654ed19 JG |
2125 | { |
2126 | int ret; | |
d2956687 | 2127 | enum lttng_trace_chunk_status chunk_status; |
7966af57 | 2128 | lttcomm_consumer_msg msg = { |
d2956687 | 2129 | .cmd_type = LTTNG_CONSUMER_TRACE_CHUNK_EXISTS, |
1c9a0b0e | 2130 | .u = {}, |
3654ed19 | 2131 | }; |
7966af57 SM |
2132 | msg.u.trace_chunk_exists.session_id = session_id; |
2133 | ||
d2956687 JG |
2134 | uint64_t chunk_id; |
2135 | const char *consumer_reply_str; | |
3654ed19 | 2136 | |
a0377dfe | 2137 | LTTNG_ASSERT(socket); |
3654ed19 | 2138 | |
d2956687 JG |
2139 | if (relayd_id != -1ULL) { |
2140 | LTTNG_OPTIONAL_SET(&msg.u.trace_chunk_exists.relayd_id, | |
2141 | relayd_id); | |
2142 | } | |
2143 | ||
2144 | chunk_status = lttng_trace_chunk_get_id(chunk, &chunk_id); | |
2145 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
2146 | /* | |
2147 | * Anonymous trace chunks should never be transmitted | |
2148 | * to remote peers (consumerd and relayd). They are used | |
2149 | * internally for backward-compatibility purposes. | |
2150 | */ | |
2151 | ret = -LTTNG_ERR_FATAL; | |
2152 | goto error; | |
2153 | } | |
2154 | msg.u.trace_chunk_exists.chunk_id = chunk_id; | |
2155 | ||
2156 | DBG("Sending consumer trace chunk exists command: relayd_id = %" PRId64 | |
2157 | ", session_id = %" PRIu64 | |
2158 | ", chunk_id = %" PRIu64, relayd_id, session_id, chunk_id); | |
3654ed19 JG |
2159 | |
2160 | health_code_update(); | |
2161 | ret = consumer_send_msg(socket, &msg); | |
d2956687 JG |
2162 | switch (-ret) { |
2163 | case LTTCOMM_CONSUMERD_UNKNOWN_TRACE_CHUNK: | |
2164 | consumer_reply_str = "unknown trace chunk"; | |
2165 | *result = CONSUMER_TRACE_CHUNK_EXISTS_STATUS_UNKNOWN_CHUNK; | |
2166 | break; | |
2167 | case LTTCOMM_CONSUMERD_TRACE_CHUNK_EXISTS_LOCAL: | |
2168 | consumer_reply_str = "trace chunk exists locally"; | |
2169 | *result = CONSUMER_TRACE_CHUNK_EXISTS_STATUS_EXISTS_LOCAL; | |
2170 | break; | |
2171 | case LTTCOMM_CONSUMERD_TRACE_CHUNK_EXISTS_REMOTE: | |
2172 | consumer_reply_str = "trace chunk exists on remote peer"; | |
2173 | *result = CONSUMER_TRACE_CHUNK_EXISTS_STATUS_EXISTS_REMOTE; | |
2174 | break; | |
2175 | default: | |
2176 | ERR("Consumer returned an error from TRACE_CHUNK_EXISTS command"); | |
2177 | ret = -1; | |
3654ed19 JG |
2178 | goto error; |
2179 | } | |
d2956687 JG |
2180 | DBG("Consumer reply to TRACE_CHUNK_EXISTS command: %s", |
2181 | consumer_reply_str); | |
2182 | ret = 0; | |
3654ed19 JG |
2183 | error: |
2184 | health_code_update(); | |
2185 | return ret; | |
2186 | } |