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 <assert.h> |
11 | #include <stdio.h> | |
12 | #include <stdlib.h> | |
13 | #include <string.h> | |
14 | #include <sys/stat.h> | |
15 | #include <sys/types.h> | |
16 | #include <unistd.h> | |
d88aee68 | 17 | #include <inttypes.h> |
00e2e675 DG |
18 | |
19 | #include <common/common.h> | |
20 | #include <common/defaults.h> | |
21 | #include <common/uri.h> | |
d3e2ba59 | 22 | #include <common/relayd/relayd.h> |
d2956687 | 23 | #include <common/string-utils/format.h> |
00e2e675 DG |
24 | |
25 | #include "consumer.h" | |
8782cc74 | 26 | #include "health-sessiond.h" |
7972aab2 | 27 | #include "ust-app.h" |
0b2dc8df | 28 | #include "utils.h" |
658f12fa | 29 | #include "lttng-sessiond.h" |
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 | ||
44 | assert(consumer); | |
45 | assert(session_path); | |
46 | ||
47 | health_code_update(); | |
48 | ||
49 | /* | |
50 | * Allocate the string ourself to make sure we never exceed | |
51 | * LTTNG_PATH_MAX. | |
52 | */ | |
53 | pathname = zmalloc(LTTNG_PATH_MAX); | |
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 | */ | |
96 | int consumer_socket_send(struct consumer_socket *socket, void *msg, size_t len) | |
97 | { | |
98 | int fd; | |
99 | ssize_t size; | |
100 | ||
101 | assert(socket); | |
9363801e | 102 | assert(socket->fd_ptr); |
52898cb1 DG |
103 | assert(msg); |
104 | ||
105 | /* Consumer socket is invalid. Stopping. */ | |
9363801e | 106 | fd = *socket->fd_ptr; |
52898cb1 DG |
107 | if (fd < 0) { |
108 | goto error; | |
109 | } | |
110 | ||
111 | size = lttcomm_send_unix_sock(fd, msg, len); | |
112 | if (size < 0) { | |
113 | /* The above call will print a PERROR on error. */ | |
114 | DBG("Error when sending data to consumer on sock %d", fd); | |
115 | /* | |
92db7cdc DG |
116 | * At this point, the socket is not usable anymore thus closing it and |
117 | * setting the file descriptor to -1 so it is not reused. | |
52898cb1 DG |
118 | */ |
119 | ||
120 | /* This call will PERROR on error. */ | |
121 | (void) lttcomm_close_unix_sock(fd); | |
9363801e | 122 | *socket->fd_ptr = -1; |
52898cb1 DG |
123 | goto error; |
124 | } | |
125 | ||
126 | return 0; | |
127 | ||
128 | error: | |
129 | return -1; | |
130 | } | |
131 | ||
132 | /* | |
133 | * Receive a data payload using a given consumer socket of size len. | |
134 | * | |
135 | * The consumer socket lock MUST be acquired before calling this since this | |
136 | * function can change the fd value. | |
137 | * | |
138 | * Return 0 on success else a negative value on error. | |
139 | */ | |
140 | int consumer_socket_recv(struct consumer_socket *socket, void *msg, size_t len) | |
141 | { | |
142 | int fd; | |
143 | ssize_t size; | |
144 | ||
145 | assert(socket); | |
9363801e | 146 | assert(socket->fd_ptr); |
52898cb1 DG |
147 | assert(msg); |
148 | ||
149 | /* Consumer socket is invalid. Stopping. */ | |
9363801e | 150 | fd = *socket->fd_ptr; |
52898cb1 DG |
151 | if (fd < 0) { |
152 | goto error; | |
153 | } | |
154 | ||
155 | size = lttcomm_recv_unix_sock(fd, msg, len); | |
156 | if (size <= 0) { | |
157 | /* The above call will print a PERROR on error. */ | |
158 | DBG("Error when receiving data from the consumer socket %d", fd); | |
159 | /* | |
92db7cdc DG |
160 | * At this point, the socket is not usable anymore thus closing it and |
161 | * setting the file descriptor to -1 so it is not reused. | |
52898cb1 DG |
162 | */ |
163 | ||
164 | /* This call will PERROR on error. */ | |
165 | (void) lttcomm_close_unix_sock(fd); | |
9363801e | 166 | *socket->fd_ptr = -1; |
52898cb1 DG |
167 | goto error; |
168 | } | |
169 | ||
170 | return 0; | |
171 | ||
172 | error: | |
173 | return -1; | |
174 | } | |
175 | ||
f50f23d9 DG |
176 | /* |
177 | * Receive a reply command status message from the consumer. Consumer socket | |
178 | * lock MUST be acquired before calling this function. | |
179 | * | |
180 | * Return 0 on success, -1 on recv error or a negative lttng error code which | |
181 | * was possibly returned by the consumer. | |
182 | */ | |
183 | int consumer_recv_status_reply(struct consumer_socket *sock) | |
184 | { | |
185 | int ret; | |
186 | struct lttcomm_consumer_status_msg reply; | |
187 | ||
188 | assert(sock); | |
189 | ||
52898cb1 DG |
190 | ret = consumer_socket_recv(sock, &reply, sizeof(reply)); |
191 | if (ret < 0) { | |
f50f23d9 DG |
192 | goto end; |
193 | } | |
194 | ||
0c759fc9 | 195 | if (reply.ret_code == LTTCOMM_CONSUMERD_SUCCESS) { |
f50f23d9 DG |
196 | /* All good. */ |
197 | ret = 0; | |
198 | } else { | |
199 | ret = -reply.ret_code; | |
ffe60014 | 200 | DBG("Consumer ret code %d", ret); |
f50f23d9 DG |
201 | } |
202 | ||
203 | end: | |
204 | return ret; | |
205 | } | |
206 | ||
ffe60014 DG |
207 | /* |
208 | * Once the ASK_CHANNEL command is sent to the consumer, the channel | |
209 | * information are sent back. This call receives that data and populates key | |
210 | * and stream_count. | |
211 | * | |
212 | * On success return 0 and both key and stream_count are set. On error, a | |
213 | * negative value is sent back and both parameters are untouched. | |
214 | */ | |
215 | int consumer_recv_status_channel(struct consumer_socket *sock, | |
d88aee68 | 216 | uint64_t *key, unsigned int *stream_count) |
ffe60014 DG |
217 | { |
218 | int ret; | |
219 | struct lttcomm_consumer_status_channel reply; | |
220 | ||
221 | assert(sock); | |
222 | assert(stream_count); | |
223 | assert(key); | |
224 | ||
52898cb1 DG |
225 | ret = consumer_socket_recv(sock, &reply, sizeof(reply)); |
226 | if (ret < 0) { | |
ffe60014 DG |
227 | goto end; |
228 | } | |
229 | ||
230 | /* An error is possible so don't touch the key and stream_count. */ | |
0c759fc9 | 231 | if (reply.ret_code != LTTCOMM_CONSUMERD_SUCCESS) { |
ffe60014 DG |
232 | ret = -1; |
233 | goto end; | |
234 | } | |
235 | ||
236 | *key = reply.key; | |
237 | *stream_count = reply.stream_count; | |
0c759fc9 | 238 | ret = 0; |
ffe60014 DG |
239 | |
240 | end: | |
241 | return ret; | |
242 | } | |
243 | ||
2f77fc4b DG |
244 | /* |
245 | * Send destroy relayd command to consumer. | |
246 | * | |
247 | * On success return positive value. On error, negative value. | |
248 | */ | |
249 | int consumer_send_destroy_relayd(struct consumer_socket *sock, | |
250 | struct consumer_output *consumer) | |
251 | { | |
252 | int ret; | |
253 | struct lttcomm_consumer_msg msg; | |
254 | ||
255 | assert(consumer); | |
256 | assert(sock); | |
257 | ||
9363801e | 258 | DBG2("Sending destroy relayd command to consumer sock %d", *sock->fd_ptr); |
2f77fc4b | 259 | |
53efb85a | 260 | memset(&msg, 0, sizeof(msg)); |
2f77fc4b DG |
261 | msg.cmd_type = LTTNG_CONSUMER_DESTROY_RELAYD; |
262 | msg.u.destroy_relayd.net_seq_idx = consumer->net_seq_index; | |
263 | ||
264 | pthread_mutex_lock(sock->lock); | |
52898cb1 | 265 | ret = consumer_socket_send(sock, &msg, sizeof(msg)); |
2f77fc4b | 266 | if (ret < 0) { |
52898cb1 | 267 | goto error; |
2f77fc4b DG |
268 | } |
269 | ||
f50f23d9 DG |
270 | /* Don't check the return value. The caller will do it. */ |
271 | ret = consumer_recv_status_reply(sock); | |
272 | ||
2f77fc4b DG |
273 | DBG2("Consumer send destroy relayd command done"); |
274 | ||
275 | error: | |
52898cb1 | 276 | pthread_mutex_unlock(sock->lock); |
2f77fc4b DG |
277 | return ret; |
278 | } | |
279 | ||
280 | /* | |
281 | * For each consumer socket in the consumer output object, send a destroy | |
282 | * relayd command. | |
283 | */ | |
284 | void consumer_output_send_destroy_relayd(struct consumer_output *consumer) | |
285 | { | |
2f77fc4b DG |
286 | struct lttng_ht_iter iter; |
287 | struct consumer_socket *socket; | |
288 | ||
289 | assert(consumer); | |
290 | ||
291 | /* Destroy any relayd connection */ | |
6dc3064a | 292 | if (consumer->type == CONSUMER_DST_NET) { |
2f77fc4b DG |
293 | rcu_read_lock(); |
294 | cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket, | |
295 | node.node) { | |
c617c0c6 MD |
296 | int ret; |
297 | ||
2f77fc4b DG |
298 | /* Send destroy relayd command */ |
299 | ret = consumer_send_destroy_relayd(socket, consumer); | |
300 | if (ret < 0) { | |
c5c45efa | 301 | DBG("Unable to send destroy relayd command to consumer"); |
2f77fc4b DG |
302 | /* Continue since we MUST delete everything at this point. */ |
303 | } | |
304 | } | |
305 | rcu_read_unlock(); | |
306 | } | |
307 | } | |
308 | ||
a4b92340 DG |
309 | /* |
310 | * From a consumer_data structure, allocate and add a consumer socket to the | |
311 | * consumer output. | |
312 | * | |
313 | * Return 0 on success, else negative value on error | |
314 | */ | |
315 | int consumer_create_socket(struct consumer_data *data, | |
316 | struct consumer_output *output) | |
317 | { | |
318 | int ret = 0; | |
319 | struct consumer_socket *socket; | |
320 | ||
321 | assert(data); | |
322 | ||
323 | if (output == NULL || data->cmd_sock < 0) { | |
324 | /* | |
325 | * Not an error. Possible there is simply not spawned consumer or it's | |
326 | * disabled for the tracing session asking the socket. | |
327 | */ | |
328 | goto error; | |
329 | } | |
330 | ||
331 | rcu_read_lock(); | |
332 | socket = consumer_find_socket(data->cmd_sock, output); | |
333 | rcu_read_unlock(); | |
334 | if (socket == NULL) { | |
4ce514c4 | 335 | socket = consumer_allocate_socket(&data->cmd_sock); |
a4b92340 DG |
336 | if (socket == NULL) { |
337 | ret = -1; | |
338 | goto error; | |
339 | } | |
340 | ||
2f77fc4b | 341 | socket->registered = 0; |
a4b92340 DG |
342 | socket->lock = &data->lock; |
343 | rcu_read_lock(); | |
344 | consumer_add_socket(socket, output); | |
345 | rcu_read_unlock(); | |
346 | } | |
347 | ||
6dc3064a DG |
348 | socket->type = data->type; |
349 | ||
a4b92340 DG |
350 | DBG3("Consumer socket created (fd: %d) and added to output", |
351 | data->cmd_sock); | |
352 | ||
353 | error: | |
354 | return ret; | |
355 | } | |
356 | ||
7972aab2 DG |
357 | /* |
358 | * Return the consumer socket from the given consumer output with the right | |
359 | * bitness. On error, returns NULL. | |
360 | * | |
361 | * The caller MUST acquire a rcu read side lock and keep it until the socket | |
362 | * object reference is not needed anymore. | |
363 | */ | |
364 | struct consumer_socket *consumer_find_socket_by_bitness(int bits, | |
348a81dc | 365 | const struct consumer_output *consumer) |
7972aab2 DG |
366 | { |
367 | int consumer_fd; | |
368 | struct consumer_socket *socket = NULL; | |
369 | ||
370 | switch (bits) { | |
371 | case 64: | |
372 | consumer_fd = uatomic_read(&ust_consumerd64_fd); | |
373 | break; | |
374 | case 32: | |
375 | consumer_fd = uatomic_read(&ust_consumerd32_fd); | |
376 | break; | |
377 | default: | |
378 | assert(0); | |
379 | goto end; | |
380 | } | |
381 | ||
382 | socket = consumer_find_socket(consumer_fd, consumer); | |
383 | if (!socket) { | |
384 | ERR("Consumer socket fd %d not found in consumer obj %p", | |
385 | consumer_fd, consumer); | |
386 | } | |
387 | ||
388 | end: | |
389 | return socket; | |
390 | } | |
391 | ||
173af62f DG |
392 | /* |
393 | * Find a consumer_socket in a consumer_output hashtable. Read side lock must | |
394 | * be acquired before calling this function and across use of the | |
395 | * returned consumer_socket. | |
396 | */ | |
397 | struct consumer_socket *consumer_find_socket(int key, | |
348a81dc | 398 | const struct consumer_output *consumer) |
173af62f DG |
399 | { |
400 | struct lttng_ht_iter iter; | |
401 | struct lttng_ht_node_ulong *node; | |
402 | struct consumer_socket *socket = NULL; | |
403 | ||
404 | /* Negative keys are lookup failures */ | |
a4b92340 | 405 | if (key < 0 || consumer == NULL) { |
173af62f DG |
406 | return NULL; |
407 | } | |
408 | ||
409 | lttng_ht_lookup(consumer->socks, (void *)((unsigned long) key), | |
410 | &iter); | |
411 | node = lttng_ht_iter_get_node_ulong(&iter); | |
412 | if (node != NULL) { | |
413 | socket = caa_container_of(node, struct consumer_socket, node); | |
414 | } | |
415 | ||
416 | return socket; | |
417 | } | |
418 | ||
419 | /* | |
420 | * Allocate a new consumer_socket and return the pointer. | |
421 | */ | |
4ce514c4 | 422 | struct consumer_socket *consumer_allocate_socket(int *fd) |
173af62f DG |
423 | { |
424 | struct consumer_socket *socket = NULL; | |
425 | ||
4ce514c4 DG |
426 | assert(fd); |
427 | ||
173af62f DG |
428 | socket = zmalloc(sizeof(struct consumer_socket)); |
429 | if (socket == NULL) { | |
430 | PERROR("zmalloc consumer socket"); | |
431 | goto error; | |
432 | } | |
433 | ||
9363801e | 434 | socket->fd_ptr = fd; |
4ce514c4 | 435 | lttng_ht_node_init_ulong(&socket->node, *fd); |
173af62f DG |
436 | |
437 | error: | |
438 | return socket; | |
439 | } | |
440 | ||
441 | /* | |
442 | * Add consumer socket to consumer output object. Read side lock must be | |
443 | * acquired before calling this function. | |
444 | */ | |
445 | void consumer_add_socket(struct consumer_socket *sock, | |
446 | struct consumer_output *consumer) | |
447 | { | |
448 | assert(sock); | |
449 | assert(consumer); | |
450 | ||
451 | lttng_ht_add_unique_ulong(consumer->socks, &sock->node); | |
452 | } | |
453 | ||
454 | /* | |
348a81dc | 455 | * Delete consumer socket to consumer output object. Read side lock must be |
173af62f DG |
456 | * acquired before calling this function. |
457 | */ | |
458 | void consumer_del_socket(struct consumer_socket *sock, | |
459 | struct consumer_output *consumer) | |
460 | { | |
461 | int ret; | |
462 | struct lttng_ht_iter iter; | |
463 | ||
464 | assert(sock); | |
465 | assert(consumer); | |
466 | ||
467 | iter.iter.node = &sock->node.node; | |
468 | ret = lttng_ht_del(consumer->socks, &iter); | |
469 | assert(!ret); | |
470 | } | |
471 | ||
472 | /* | |
473 | * RCU destroy call function. | |
474 | */ | |
475 | static void destroy_socket_rcu(struct rcu_head *head) | |
476 | { | |
477 | struct lttng_ht_node_ulong *node = | |
478 | caa_container_of(head, struct lttng_ht_node_ulong, head); | |
479 | struct consumer_socket *socket = | |
480 | caa_container_of(node, struct consumer_socket, node); | |
481 | ||
482 | free(socket); | |
483 | } | |
484 | ||
485 | /* | |
486 | * Destroy and free socket pointer in a call RCU. Read side lock must be | |
487 | * acquired before calling this function. | |
488 | */ | |
489 | void consumer_destroy_socket(struct consumer_socket *sock) | |
490 | { | |
491 | assert(sock); | |
492 | ||
493 | /* | |
494 | * We DO NOT close the file descriptor here since it is global to the | |
2f77fc4b DG |
495 | * session daemon and is closed only if the consumer dies or a custom |
496 | * consumer was registered, | |
173af62f | 497 | */ |
2f77fc4b | 498 | if (sock->registered) { |
9363801e DG |
499 | DBG3("Consumer socket was registered. Closing fd %d", *sock->fd_ptr); |
500 | lttcomm_close_unix_sock(*sock->fd_ptr); | |
2f77fc4b | 501 | } |
173af62f DG |
502 | |
503 | call_rcu(&sock->node.head, destroy_socket_rcu); | |
504 | } | |
505 | ||
00e2e675 DG |
506 | /* |
507 | * Allocate and assign data to a consumer_output object. | |
508 | * | |
509 | * Return pointer to structure. | |
510 | */ | |
511 | struct consumer_output *consumer_create_output(enum consumer_dst_type type) | |
512 | { | |
513 | struct consumer_output *output = NULL; | |
514 | ||
515 | output = zmalloc(sizeof(struct consumer_output)); | |
516 | if (output == NULL) { | |
517 | PERROR("zmalloc consumer_output"); | |
518 | goto error; | |
519 | } | |
520 | ||
521 | /* By default, consumer output is enabled */ | |
522 | output->enabled = 1; | |
523 | output->type = type; | |
d88aee68 | 524 | output->net_seq_index = (uint64_t) -1ULL; |
6addfa37 | 525 | urcu_ref_init(&output->ref); |
173af62f DG |
526 | |
527 | output->socks = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG); | |
00e2e675 DG |
528 | |
529 | error: | |
530 | return output; | |
531 | } | |
532 | ||
af706bb7 DG |
533 | /* |
534 | * Iterate over the consumer output socket hash table and destroy them. The | |
535 | * socket file descriptor are only closed if the consumer output was | |
536 | * registered meaning it's an external consumer. | |
537 | */ | |
538 | void consumer_destroy_output_sockets(struct consumer_output *obj) | |
539 | { | |
540 | struct lttng_ht_iter iter; | |
541 | struct consumer_socket *socket; | |
542 | ||
543 | if (!obj->socks) { | |
544 | return; | |
545 | } | |
546 | ||
547 | rcu_read_lock(); | |
548 | cds_lfht_for_each_entry(obj->socks->ht, &iter.iter, socket, node.node) { | |
549 | consumer_del_socket(socket, obj); | |
550 | consumer_destroy_socket(socket); | |
551 | } | |
552 | rcu_read_unlock(); | |
553 | } | |
554 | ||
00e2e675 DG |
555 | /* |
556 | * Delete the consumer_output object from the list and free the ptr. | |
36b588ed MD |
557 | * |
558 | * Should *NOT* be called with RCU read-side lock held. | |
00e2e675 | 559 | */ |
6addfa37 | 560 | static void consumer_release_output(struct urcu_ref *ref) |
00e2e675 | 561 | { |
6addfa37 MD |
562 | struct consumer_output *obj = |
563 | caa_container_of(ref, struct consumer_output, ref); | |
00e2e675 | 564 | |
af706bb7 | 565 | consumer_destroy_output_sockets(obj); |
2f77fc4b | 566 | |
af706bb7 | 567 | if (obj->socks) { |
2f77fc4b | 568 | /* Finally destroy HT */ |
0b2dc8df | 569 | ht_cleanup_push(obj->socks); |
00e2e675 | 570 | } |
173af62f | 571 | |
00e2e675 DG |
572 | free(obj); |
573 | } | |
574 | ||
6addfa37 MD |
575 | /* |
576 | * Get the consumer_output object. | |
577 | */ | |
578 | void consumer_output_get(struct consumer_output *obj) | |
579 | { | |
580 | urcu_ref_get(&obj->ref); | |
581 | } | |
582 | ||
583 | /* | |
584 | * Put the consumer_output object. | |
585 | * | |
586 | * Should *NOT* be called with RCU read-side lock held. | |
587 | */ | |
588 | void consumer_output_put(struct consumer_output *obj) | |
589 | { | |
590 | if (!obj) { | |
591 | return; | |
592 | } | |
593 | urcu_ref_put(&obj->ref, consumer_release_output); | |
594 | } | |
595 | ||
00e2e675 DG |
596 | /* |
597 | * Copy consumer output and returned the newly allocated copy. | |
36b588ed MD |
598 | * |
599 | * Should *NOT* be called with RCU read-side lock held. | |
00e2e675 | 600 | */ |
b178f53e | 601 | struct consumer_output *consumer_copy_output(struct consumer_output *src) |
00e2e675 | 602 | { |
6dc3064a | 603 | int ret; |
00e2e675 DG |
604 | struct consumer_output *output; |
605 | ||
b178f53e | 606 | assert(src); |
00e2e675 | 607 | |
b178f53e | 608 | output = consumer_create_output(src->type); |
00e2e675 | 609 | if (output == NULL) { |
6addfa37 | 610 | goto end; |
00e2e675 | 611 | } |
b178f53e JG |
612 | output->enabled = src->enabled; |
613 | output->net_seq_index = src->net_seq_index; | |
614 | memcpy(output->domain_subdir, src->domain_subdir, | |
615 | sizeof(output->domain_subdir)); | |
616 | output->snapshot = src->snapshot; | |
617 | output->relay_major_version = src->relay_major_version; | |
618 | output->relay_minor_version = src->relay_minor_version; | |
eacb7b6f | 619 | output->relay_allows_clear = src->relay_allows_clear; |
b178f53e JG |
620 | memcpy(&output->dst, &src->dst, sizeof(output->dst)); |
621 | ret = consumer_copy_sockets(output, src); | |
6dc3064a | 622 | if (ret < 0) { |
6addfa37 | 623 | goto error_put; |
6dc3064a | 624 | } |
6addfa37 | 625 | end: |
6dc3064a DG |
626 | return output; |
627 | ||
6addfa37 MD |
628 | error_put: |
629 | consumer_output_put(output); | |
6dc3064a DG |
630 | return NULL; |
631 | } | |
632 | ||
633 | /* | |
634 | * Copy consumer sockets from src to dst. | |
635 | * | |
636 | * Return 0 on success or else a negative value. | |
637 | */ | |
638 | int consumer_copy_sockets(struct consumer_output *dst, | |
639 | struct consumer_output *src) | |
640 | { | |
641 | int ret = 0; | |
642 | struct lttng_ht_iter iter; | |
643 | struct consumer_socket *socket, *copy_sock; | |
644 | ||
645 | assert(dst); | |
646 | assert(src); | |
647 | ||
b82c5c4d | 648 | rcu_read_lock(); |
6dc3064a DG |
649 | cds_lfht_for_each_entry(src->socks->ht, &iter.iter, socket, node.node) { |
650 | /* Ignore socket that are already there. */ | |
9363801e | 651 | copy_sock = consumer_find_socket(*socket->fd_ptr, dst); |
6dc3064a DG |
652 | if (copy_sock) { |
653 | continue; | |
654 | } | |
655 | ||
173af62f | 656 | /* Create new socket object. */ |
9363801e | 657 | copy_sock = consumer_allocate_socket(socket->fd_ptr); |
173af62f | 658 | if (copy_sock == NULL) { |
b82c5c4d | 659 | rcu_read_unlock(); |
6dc3064a DG |
660 | ret = -ENOMEM; |
661 | goto error; | |
173af62f DG |
662 | } |
663 | ||
09a90bcd | 664 | copy_sock->registered = socket->registered; |
6dc3064a DG |
665 | /* |
666 | * This is valid because this lock is shared accross all consumer | |
667 | * object being the global lock of the consumer data structure of the | |
668 | * session daemon. | |
669 | */ | |
173af62f | 670 | copy_sock->lock = socket->lock; |
6dc3064a | 671 | consumer_add_socket(copy_sock, dst); |
173af62f | 672 | } |
b82c5c4d | 673 | rcu_read_unlock(); |
173af62f | 674 | |
00e2e675 | 675 | error: |
6dc3064a | 676 | return ret; |
00e2e675 DG |
677 | } |
678 | ||
679 | /* | |
b178f53e | 680 | * Set network URI to the consumer output. |
00e2e675 | 681 | * |
ad20f474 DG |
682 | * Return 0 on success. Return 1 if the URI were equal. Else, negative value on |
683 | * error. | |
00e2e675 | 684 | */ |
b178f53e JG |
685 | int consumer_set_network_uri(const struct ltt_session *session, |
686 | struct consumer_output *output, | |
00e2e675 DG |
687 | struct lttng_uri *uri) |
688 | { | |
689 | int ret; | |
00e2e675 DG |
690 | struct lttng_uri *dst_uri = NULL; |
691 | ||
692 | /* Code flow error safety net. */ | |
b178f53e | 693 | assert(output); |
00e2e675 DG |
694 | assert(uri); |
695 | ||
696 | switch (uri->stype) { | |
697 | case LTTNG_STREAM_CONTROL: | |
b178f53e JG |
698 | dst_uri = &output->dst.net.control; |
699 | output->dst.net.control_isset = 1; | |
00e2e675 DG |
700 | if (uri->port == 0) { |
701 | /* Assign default port. */ | |
702 | uri->port = DEFAULT_NETWORK_CONTROL_PORT; | |
a74934ba | 703 | } else { |
b178f53e JG |
704 | if (output->dst.net.data_isset && uri->port == |
705 | output->dst.net.data.port) { | |
a74934ba DG |
706 | ret = -LTTNG_ERR_INVALID; |
707 | goto error; | |
708 | } | |
00e2e675 | 709 | } |
ad20f474 | 710 | DBG3("Consumer control URI set with port %d", uri->port); |
00e2e675 DG |
711 | break; |
712 | case LTTNG_STREAM_DATA: | |
b178f53e JG |
713 | dst_uri = &output->dst.net.data; |
714 | output->dst.net.data_isset = 1; | |
00e2e675 DG |
715 | if (uri->port == 0) { |
716 | /* Assign default port. */ | |
717 | uri->port = DEFAULT_NETWORK_DATA_PORT; | |
a74934ba | 718 | } else { |
b178f53e JG |
719 | if (output->dst.net.control_isset && uri->port == |
720 | output->dst.net.control.port) { | |
a74934ba DG |
721 | ret = -LTTNG_ERR_INVALID; |
722 | goto error; | |
723 | } | |
00e2e675 | 724 | } |
ad20f474 | 725 | DBG3("Consumer data URI set with port %d", uri->port); |
00e2e675 DG |
726 | break; |
727 | default: | |
728 | ERR("Set network uri type unknown %d", uri->stype); | |
a74934ba | 729 | ret = -LTTNG_ERR_INVALID; |
00e2e675 DG |
730 | goto error; |
731 | } | |
732 | ||
733 | ret = uri_compare(dst_uri, uri); | |
734 | if (!ret) { | |
735 | /* Same URI, don't touch it and return success. */ | |
736 | DBG3("URI network compare are the same"); | |
ad20f474 | 737 | goto equal; |
00e2e675 DG |
738 | } |
739 | ||
740 | /* URIs were not equal, replacing it. */ | |
00e2e675 | 741 | memcpy(dst_uri, uri, sizeof(struct lttng_uri)); |
b178f53e JG |
742 | output->type = CONSUMER_DST_NET; |
743 | if (dst_uri->stype != LTTNG_STREAM_CONTROL) { | |
744 | /* Only the control uri needs to contain the path. */ | |
745 | goto end; | |
746 | } | |
00e2e675 | 747 | |
b178f53e JG |
748 | /* |
749 | * If the user has specified a subdir as part of the control | |
750 | * URL, the session's base output directory is: | |
751 | * /RELAYD_OUTPUT_PATH/HOSTNAME/USER_SPECIFIED_DIR | |
752 | * | |
753 | * Hence, the "base_dir" from which all stream files and | |
754 | * session rotation chunks are created takes the form | |
755 | * /HOSTNAME/USER_SPECIFIED_DIR | |
756 | * | |
757 | * If the user has not specified an output directory as part of | |
758 | * the control URL, the base output directory has the form: | |
759 | * /RELAYD_OUTPUT_PATH/HOSTNAME/SESSION_NAME-CREATION_TIME | |
760 | * | |
761 | * Hence, the "base_dir" from which all stream files and | |
762 | * session rotation chunks are created takes the form | |
763 | * /HOSTNAME/SESSION_NAME-CREATION_TIME | |
764 | * | |
765 | * Note that automatically generated session names already | |
766 | * contain the session's creation time. In that case, the | |
767 | * creation time is omitted to prevent it from being duplicated | |
768 | * in the final directory hierarchy. | |
769 | */ | |
770 | if (*uri->subdir) { | |
771 | if (strstr(uri->subdir, "../")) { | |
772 | ERR("Network URI subdirs are not allowed to walk up the path hierarchy"); | |
773 | ret = -LTTNG_ERR_INVALID; | |
00e2e675 DG |
774 | goto error; |
775 | } | |
b178f53e JG |
776 | ret = snprintf(output->dst.net.base_dir, |
777 | sizeof(output->dst.net.base_dir), | |
778 | "/%s/%s/", session->hostname, uri->subdir); | |
779 | } else { | |
780 | if (session->has_auto_generated_name) { | |
781 | ret = snprintf(output->dst.net.base_dir, | |
782 | sizeof(output->dst.net.base_dir), | |
783 | "/%s/%s/", session->hostname, | |
784 | session->name); | |
785 | } else { | |
786 | char session_creation_datetime[16]; | |
787 | size_t strftime_ret; | |
788 | struct tm *timeinfo; | |
00e2e675 | 789 | |
b178f53e JG |
790 | timeinfo = localtime(&session->creation_time); |
791 | if (!timeinfo) { | |
792 | ret = -LTTNG_ERR_FATAL; | |
793 | goto error; | |
794 | } | |
795 | strftime_ret = strftime(session_creation_datetime, | |
796 | sizeof(session_creation_datetime), | |
797 | "%Y%m%d-%H%M%S", timeinfo); | |
798 | if (strftime_ret == 0) { | |
799 | ERR("Failed to format session creation timestamp while setting network URI"); | |
800 | ret = -LTTNG_ERR_FATAL; | |
801 | goto error; | |
802 | } | |
803 | ret = snprintf(output->dst.net.base_dir, | |
804 | sizeof(output->dst.net.base_dir), | |
805 | "/%s/%s-%s/", session->hostname, | |
806 | session->name, | |
807 | session_creation_datetime); | |
bfc6eff0 | 808 | } |
00e2e675 | 809 | } |
b178f53e JG |
810 | if (ret >= sizeof(output->dst.net.base_dir)) { |
811 | ret = -LTTNG_ERR_INVALID; | |
812 | ERR("Truncation occurred while setting network output base directory"); | |
813 | goto error; | |
814 | } else if (ret == -1) { | |
815 | ret = -LTTNG_ERR_INVALID; | |
816 | PERROR("Error occurred while setting network output base directory"); | |
817 | goto error; | |
818 | } | |
819 | ||
820 | DBG3("Consumer set network uri base_dir path %s", | |
821 | output->dst.net.base_dir); | |
00e2e675 | 822 | |
b178f53e | 823 | end: |
00e2e675 | 824 | return 0; |
ad20f474 DG |
825 | equal: |
826 | return 1; | |
00e2e675 | 827 | error: |
a74934ba | 828 | return ret; |
00e2e675 DG |
829 | } |
830 | ||
831 | /* | |
832 | * Send file descriptor to consumer via sock. | |
9a318688 JG |
833 | * |
834 | * The consumer socket lock must be held by the caller. | |
00e2e675 | 835 | */ |
ac2f30af JG |
836 | int consumer_send_fds(struct consumer_socket *sock, const int *fds, |
837 | size_t nb_fd) | |
00e2e675 DG |
838 | { |
839 | int ret; | |
840 | ||
841 | assert(fds); | |
f50f23d9 | 842 | assert(sock); |
00e2e675 | 843 | assert(nb_fd > 0); |
05dac598 | 844 | assert(pthread_mutex_trylock(sock->lock) == EBUSY); |
00e2e675 | 845 | |
9363801e | 846 | ret = lttcomm_send_fds_unix_sock(*sock->fd_ptr, fds, nb_fd); |
00e2e675 | 847 | if (ret < 0) { |
3448e266 | 848 | /* The above call will print a PERROR on error. */ |
9363801e | 849 | DBG("Error when sending consumer fds on sock %d", *sock->fd_ptr); |
00e2e675 DG |
850 | goto error; |
851 | } | |
852 | ||
f50f23d9 | 853 | ret = consumer_recv_status_reply(sock); |
00e2e675 DG |
854 | error: |
855 | return ret; | |
856 | } | |
857 | ||
ffe60014 DG |
858 | /* |
859 | * Consumer send communication message structure to consumer. | |
9a318688 JG |
860 | * |
861 | * The consumer socket lock must be held by the caller. | |
ffe60014 DG |
862 | */ |
863 | int consumer_send_msg(struct consumer_socket *sock, | |
864 | struct lttcomm_consumer_msg *msg) | |
865 | { | |
866 | int ret; | |
867 | ||
868 | assert(msg); | |
869 | assert(sock); | |
211b734b | 870 | assert(pthread_mutex_trylock(sock->lock) == EBUSY); |
ffe60014 | 871 | |
52898cb1 | 872 | ret = consumer_socket_send(sock, msg, sizeof(struct lttcomm_consumer_msg)); |
ffe60014 | 873 | if (ret < 0) { |
ffe60014 DG |
874 | goto error; |
875 | } | |
876 | ||
877 | ret = consumer_recv_status_reply(sock); | |
878 | ||
879 | error: | |
880 | return ret; | |
881 | } | |
882 | ||
00e2e675 DG |
883 | /* |
884 | * Consumer send channel communication message structure to consumer. | |
9a318688 JG |
885 | * |
886 | * The consumer socket lock must be held by the caller. | |
00e2e675 | 887 | */ |
f50f23d9 DG |
888 | int consumer_send_channel(struct consumer_socket *sock, |
889 | struct lttcomm_consumer_msg *msg) | |
00e2e675 DG |
890 | { |
891 | int ret; | |
892 | ||
893 | assert(msg); | |
f50f23d9 | 894 | assert(sock); |
00e2e675 | 895 | |
52898cb1 | 896 | ret = consumer_send_msg(sock, msg); |
00e2e675 | 897 | if (ret < 0) { |
00e2e675 DG |
898 | goto error; |
899 | } | |
900 | ||
901 | error: | |
902 | return ret; | |
903 | } | |
904 | ||
ffe60014 DG |
905 | /* |
906 | * Populate the given consumer msg structure with the ask_channel command | |
907 | * information. | |
908 | */ | |
909 | void consumer_init_ask_channel_comm_msg(struct lttcomm_consumer_msg *msg, | |
910 | uint64_t subbuf_size, | |
911 | uint64_t num_subbuf, | |
912 | int overwrite, | |
913 | unsigned int switch_timer_interval, | |
914 | unsigned int read_timer_interval, | |
ecc48a90 | 915 | unsigned int live_timer_interval, |
e9404c27 | 916 | unsigned int monitor_timer_interval, |
ffe60014 DG |
917 | int output, |
918 | int type, | |
919 | uint64_t session_id, | |
920 | const char *pathname, | |
921 | const char *name, | |
d88aee68 DG |
922 | uint64_t relayd_id, |
923 | uint64_t key, | |
7972aab2 | 924 | unsigned char *uuid, |
1624d5b7 JD |
925 | uint32_t chan_id, |
926 | uint64_t tracefile_size, | |
2bba9e53 | 927 | uint64_t tracefile_count, |
1950109e | 928 | uint64_t session_id_per_pid, |
567eb353 | 929 | unsigned int monitor, |
d7ba1388 | 930 | uint32_t ust_app_uid, |
491d1539 | 931 | int64_t blocking_timeout, |
3d071855 | 932 | const char *root_shm_path, |
e098433c | 933 | const char *shm_path, |
1b0bebcb JG |
934 | struct lttng_trace_chunk *trace_chunk, |
935 | const struct lttng_credentials *buffer_credentials) | |
ffe60014 DG |
936 | { |
937 | assert(msg); | |
938 | ||
d2956687 | 939 | /* Zeroed structure */ |
ffe60014 | 940 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); |
d2956687 JG |
941 | msg->u.ask_channel.buffer_credentials.uid = UINT32_MAX; |
942 | msg->u.ask_channel.buffer_credentials.gid = UINT32_MAX; | |
943 | ||
d2956687 JG |
944 | if (trace_chunk) { |
945 | uint64_t chunk_id; | |
946 | enum lttng_trace_chunk_status chunk_status; | |
d2956687 JG |
947 | |
948 | chunk_status = lttng_trace_chunk_get_id(trace_chunk, &chunk_id); | |
949 | assert(chunk_status == LTTNG_TRACE_CHUNK_STATUS_OK); | |
950 | LTTNG_OPTIONAL_SET(&msg->u.ask_channel.chunk_id, chunk_id); | |
d2956687 | 951 | } |
1b0bebcb JG |
952 | msg->u.ask_channel.buffer_credentials.uid = buffer_credentials->uid; |
953 | msg->u.ask_channel.buffer_credentials.gid = buffer_credentials->gid; | |
ffe60014 DG |
954 | |
955 | msg->cmd_type = LTTNG_CONSUMER_ASK_CHANNEL_CREATION; | |
956 | msg->u.ask_channel.subbuf_size = subbuf_size; | |
957 | msg->u.ask_channel.num_subbuf = num_subbuf ; | |
958 | msg->u.ask_channel.overwrite = overwrite; | |
959 | msg->u.ask_channel.switch_timer_interval = switch_timer_interval; | |
960 | msg->u.ask_channel.read_timer_interval = read_timer_interval; | |
ecc48a90 | 961 | msg->u.ask_channel.live_timer_interval = live_timer_interval; |
e9404c27 | 962 | msg->u.ask_channel.monitor_timer_interval = monitor_timer_interval; |
ffe60014 DG |
963 | msg->u.ask_channel.output = output; |
964 | msg->u.ask_channel.type = type; | |
965 | msg->u.ask_channel.session_id = session_id; | |
1950109e | 966 | msg->u.ask_channel.session_id_per_pid = session_id_per_pid; |
ffe60014 DG |
967 | msg->u.ask_channel.relayd_id = relayd_id; |
968 | msg->u.ask_channel.key = key; | |
7972aab2 | 969 | msg->u.ask_channel.chan_id = chan_id; |
1624d5b7 JD |
970 | msg->u.ask_channel.tracefile_size = tracefile_size; |
971 | msg->u.ask_channel.tracefile_count = tracefile_count; | |
2bba9e53 | 972 | msg->u.ask_channel.monitor = monitor; |
567eb353 | 973 | msg->u.ask_channel.ust_app_uid = ust_app_uid; |
491d1539 | 974 | msg->u.ask_channel.blocking_timeout = blocking_timeout; |
ffe60014 DG |
975 | |
976 | memcpy(msg->u.ask_channel.uuid, uuid, sizeof(msg->u.ask_channel.uuid)); | |
977 | ||
10a50311 JD |
978 | if (pathname) { |
979 | strncpy(msg->u.ask_channel.pathname, pathname, | |
980 | sizeof(msg->u.ask_channel.pathname)); | |
981 | msg->u.ask_channel.pathname[sizeof(msg->u.ask_channel.pathname)-1] = '\0'; | |
982 | } | |
ffe60014 DG |
983 | |
984 | strncpy(msg->u.ask_channel.name, name, sizeof(msg->u.ask_channel.name)); | |
985 | msg->u.ask_channel.name[sizeof(msg->u.ask_channel.name) - 1] = '\0'; | |
d7ba1388 | 986 | |
3d071855 MD |
987 | if (root_shm_path) { |
988 | strncpy(msg->u.ask_channel.root_shm_path, root_shm_path, | |
989 | sizeof(msg->u.ask_channel.root_shm_path)); | |
990 | msg->u.ask_channel.root_shm_path[sizeof(msg->u.ask_channel.root_shm_path) - 1] = '\0'; | |
991 | } | |
d7ba1388 MD |
992 | if (shm_path) { |
993 | strncpy(msg->u.ask_channel.shm_path, shm_path, | |
994 | sizeof(msg->u.ask_channel.shm_path)); | |
995 | msg->u.ask_channel.shm_path[sizeof(msg->u.ask_channel.shm_path) - 1] = '\0'; | |
996 | } | |
ffe60014 DG |
997 | } |
998 | ||
00e2e675 DG |
999 | /* |
1000 | * Init channel communication message structure. | |
1001 | */ | |
638e7b4e | 1002 | void consumer_init_add_channel_comm_msg(struct lttcomm_consumer_msg *msg, |
d88aee68 | 1003 | uint64_t channel_key, |
ffe60014 DG |
1004 | uint64_t session_id, |
1005 | const char *pathname, | |
1006 | uid_t uid, | |
1007 | gid_t gid, | |
d88aee68 | 1008 | uint64_t relayd_id, |
c30aaa51 | 1009 | const char *name, |
ffe60014 DG |
1010 | unsigned int nb_init_streams, |
1011 | enum lttng_event_output output, | |
1624d5b7 JD |
1012 | int type, |
1013 | uint64_t tracefile_size, | |
2bba9e53 | 1014 | uint64_t tracefile_count, |
ecc48a90 | 1015 | unsigned int monitor, |
e9404c27 | 1016 | unsigned int live_timer_interval, |
d2956687 JG |
1017 | unsigned int monitor_timer_interval, |
1018 | struct lttng_trace_chunk *trace_chunk) | |
00e2e675 DG |
1019 | { |
1020 | assert(msg); | |
1021 | ||
00e2e675 DG |
1022 | /* Zeroed structure */ |
1023 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
1024 | ||
d2956687 JG |
1025 | if (trace_chunk) { |
1026 | uint64_t chunk_id; | |
1027 | enum lttng_trace_chunk_status chunk_status; | |
1028 | ||
1029 | chunk_status = lttng_trace_chunk_get_id(trace_chunk, &chunk_id); | |
1030 | assert(chunk_status == LTTNG_TRACE_CHUNK_STATUS_OK); | |
1031 | LTTNG_OPTIONAL_SET(&msg->u.channel.chunk_id, chunk_id); | |
1032 | } | |
1033 | ||
00e2e675 | 1034 | /* Send channel */ |
638e7b4e | 1035 | msg->cmd_type = LTTNG_CONSUMER_ADD_CHANNEL; |
00e2e675 | 1036 | msg->u.channel.channel_key = channel_key; |
ffe60014 | 1037 | msg->u.channel.session_id = session_id; |
ffe60014 | 1038 | msg->u.channel.relayd_id = relayd_id; |
c30aaa51 | 1039 | msg->u.channel.nb_init_streams = nb_init_streams; |
ffe60014 DG |
1040 | msg->u.channel.output = output; |
1041 | msg->u.channel.type = type; | |
1624d5b7 JD |
1042 | msg->u.channel.tracefile_size = tracefile_size; |
1043 | msg->u.channel.tracefile_count = tracefile_count; | |
2bba9e53 | 1044 | msg->u.channel.monitor = monitor; |
ecc48a90 | 1045 | msg->u.channel.live_timer_interval = live_timer_interval; |
e9404c27 | 1046 | msg->u.channel.monitor_timer_interval = monitor_timer_interval; |
ffe60014 DG |
1047 | |
1048 | strncpy(msg->u.channel.pathname, pathname, | |
1049 | sizeof(msg->u.channel.pathname)); | |
1050 | msg->u.channel.pathname[sizeof(msg->u.channel.pathname) - 1] = '\0'; | |
1051 | ||
1052 | strncpy(msg->u.channel.name, name, sizeof(msg->u.channel.name)); | |
1053 | msg->u.channel.name[sizeof(msg->u.channel.name) - 1] = '\0'; | |
00e2e675 DG |
1054 | } |
1055 | ||
1056 | /* | |
1057 | * Init stream communication message structure. | |
1058 | */ | |
e098433c | 1059 | void consumer_init_add_stream_comm_msg(struct lttcomm_consumer_msg *msg, |
d88aee68 DG |
1060 | uint64_t channel_key, |
1061 | uint64_t stream_key, | |
d2956687 | 1062 | int32_t cpu) |
00e2e675 DG |
1063 | { |
1064 | assert(msg); | |
1065 | ||
1066 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
1067 | ||
e098433c | 1068 | msg->cmd_type = LTTNG_CONSUMER_ADD_STREAM; |
00e2e675 DG |
1069 | msg->u.stream.channel_key = channel_key; |
1070 | msg->u.stream.stream_key = stream_key; | |
ffe60014 | 1071 | msg->u.stream.cpu = cpu; |
00e2e675 DG |
1072 | } |
1073 | ||
a4baae1b JD |
1074 | void consumer_init_streams_sent_comm_msg(struct lttcomm_consumer_msg *msg, |
1075 | enum lttng_consumer_command cmd, | |
1076 | uint64_t channel_key, uint64_t net_seq_idx) | |
1077 | { | |
1078 | assert(msg); | |
1079 | ||
1080 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
1081 | ||
1082 | msg->cmd_type = cmd; | |
1083 | msg->u.sent_streams.channel_key = channel_key; | |
1084 | msg->u.sent_streams.net_seq_idx = net_seq_idx; | |
1085 | } | |
1086 | ||
00e2e675 DG |
1087 | /* |
1088 | * Send stream communication structure to the consumer. | |
1089 | */ | |
f50f23d9 DG |
1090 | int consumer_send_stream(struct consumer_socket *sock, |
1091 | struct consumer_output *dst, struct lttcomm_consumer_msg *msg, | |
ac2f30af | 1092 | const int *fds, size_t nb_fd) |
00e2e675 DG |
1093 | { |
1094 | int ret; | |
1095 | ||
1096 | assert(msg); | |
1097 | assert(dst); | |
f50f23d9 | 1098 | assert(sock); |
ffe60014 | 1099 | assert(fds); |
00e2e675 | 1100 | |
52898cb1 | 1101 | ret = consumer_send_msg(sock, msg); |
f50f23d9 DG |
1102 | if (ret < 0) { |
1103 | goto error; | |
1104 | } | |
1105 | ||
00e2e675 DG |
1106 | ret = consumer_send_fds(sock, fds, nb_fd); |
1107 | if (ret < 0) { | |
1108 | goto error; | |
1109 | } | |
1110 | ||
1111 | error: | |
1112 | return ret; | |
1113 | } | |
37278a1e DG |
1114 | |
1115 | /* | |
1116 | * Send relayd socket to consumer associated with a session name. | |
1117 | * | |
43fade62 JG |
1118 | * The consumer socket lock must be held by the caller. |
1119 | * | |
37278a1e DG |
1120 | * On success return positive value. On error, negative value. |
1121 | */ | |
f50f23d9 | 1122 | int consumer_send_relayd_socket(struct consumer_socket *consumer_sock, |
6151a90f | 1123 | struct lttcomm_relayd_sock *rsock, struct consumer_output *consumer, |
d3e2ba59 | 1124 | enum lttng_stream_type type, uint64_t session_id, |
fb9a95c4 | 1125 | const char *session_name, const char *hostname, |
6fa5fe7c | 1126 | const char *base_path, int session_live_timer, |
46ef2188 MD |
1127 | const uint64_t *current_chunk_id, time_t session_creation_time, |
1128 | bool session_name_contains_creation_time) | |
37278a1e DG |
1129 | { |
1130 | int ret; | |
1131 | struct lttcomm_consumer_msg msg; | |
1132 | ||
1133 | /* Code flow error. Safety net. */ | |
6151a90f | 1134 | assert(rsock); |
37278a1e | 1135 | assert(consumer); |
f50f23d9 | 1136 | assert(consumer_sock); |
37278a1e | 1137 | |
53efb85a | 1138 | memset(&msg, 0, sizeof(msg)); |
37278a1e DG |
1139 | /* Bail out if consumer is disabled */ |
1140 | if (!consumer->enabled) { | |
f73fabfd | 1141 | ret = LTTNG_OK; |
37278a1e DG |
1142 | goto error; |
1143 | } | |
1144 | ||
d3e2ba59 | 1145 | if (type == LTTNG_STREAM_CONTROL) { |
ecd1a12f | 1146 | char output_path[LTTNG_PATH_MAX] = {}; |
07aa2e42 | 1147 | uint64_t relayd_session_id; |
ecd1a12f | 1148 | |
d3e2ba59 | 1149 | ret = relayd_create_session(rsock, |
07aa2e42 | 1150 | &relayd_session_id, |
6fa5fe7c MD |
1151 | session_name, hostname, base_path, |
1152 | session_live_timer, | |
658f12fa | 1153 | consumer->snapshot, session_id, |
db1da059 | 1154 | sessiond_uuid, current_chunk_id, |
46ef2188 | 1155 | session_creation_time, |
ecd1a12f MD |
1156 | session_name_contains_creation_time, |
1157 | output_path); | |
d3e2ba59 JD |
1158 | if (ret < 0) { |
1159 | /* Close the control socket. */ | |
1160 | (void) relayd_close(rsock); | |
1161 | goto error; | |
1162 | } | |
07aa2e42 | 1163 | msg.u.relayd_sock.relayd_session_id = relayd_session_id; |
ecd1a12f MD |
1164 | DBG("Created session on relay, output path reply: %s", |
1165 | output_path); | |
d3e2ba59 JD |
1166 | } |
1167 | ||
37278a1e DG |
1168 | msg.cmd_type = LTTNG_CONSUMER_ADD_RELAYD_SOCKET; |
1169 | /* | |
1170 | * Assign network consumer output index using the temporary consumer since | |
1171 | * this call should only be made from within a set_consumer_uri() function | |
1172 | * call in the session daemon. | |
1173 | */ | |
1174 | msg.u.relayd_sock.net_index = consumer->net_seq_index; | |
1175 | msg.u.relayd_sock.type = type; | |
46e6455f | 1176 | msg.u.relayd_sock.session_id = session_id; |
6151a90f | 1177 | memcpy(&msg.u.relayd_sock.sock, rsock, sizeof(msg.u.relayd_sock.sock)); |
37278a1e | 1178 | |
9363801e | 1179 | DBG3("Sending relayd sock info to consumer on %d", *consumer_sock->fd_ptr); |
52898cb1 | 1180 | ret = consumer_send_msg(consumer_sock, &msg); |
f50f23d9 DG |
1181 | if (ret < 0) { |
1182 | goto error; | |
1183 | } | |
1184 | ||
37278a1e | 1185 | DBG3("Sending relayd socket file descriptor to consumer"); |
f712d514 | 1186 | ret = consumer_send_fds(consumer_sock, ALIGNED_CONST_PTR(rsock->sock.fd), 1); |
37278a1e DG |
1187 | if (ret < 0) { |
1188 | goto error; | |
1189 | } | |
1190 | ||
1191 | DBG2("Consumer relayd socket sent"); | |
1192 | ||
1193 | error: | |
1194 | return ret; | |
1195 | } | |
173af62f | 1196 | |
62c43103 JD |
1197 | static |
1198 | int consumer_send_pipe(struct consumer_socket *consumer_sock, | |
1199 | enum lttng_consumer_command cmd, int pipe) | |
e9404c27 JG |
1200 | { |
1201 | int ret; | |
1202 | struct lttcomm_consumer_msg msg; | |
62c43103 JD |
1203 | const char *pipe_name; |
1204 | const char *command_name; | |
1205 | ||
1206 | switch (cmd) { | |
1207 | case LTTNG_CONSUMER_SET_CHANNEL_MONITOR_PIPE: | |
1208 | pipe_name = "channel monitor"; | |
1209 | command_name = "SET_CHANNEL_MONITOR_PIPE"; | |
1210 | break; | |
62c43103 JD |
1211 | default: |
1212 | ERR("Unexpected command received in %s (cmd = %d)", __func__, | |
1213 | (int) cmd); | |
1214 | abort(); | |
1215 | } | |
e9404c27 JG |
1216 | |
1217 | /* Code flow error. Safety net. */ | |
1218 | ||
1219 | memset(&msg, 0, sizeof(msg)); | |
62c43103 | 1220 | msg.cmd_type = cmd; |
e9404c27 | 1221 | |
3e4dc117 | 1222 | pthread_mutex_lock(consumer_sock->lock); |
62c43103 | 1223 | DBG3("Sending %s command to consumer", command_name); |
e9404c27 JG |
1224 | ret = consumer_send_msg(consumer_sock, &msg); |
1225 | if (ret < 0) { | |
1226 | goto error; | |
1227 | } | |
1228 | ||
62c43103 JD |
1229 | DBG3("Sending %s pipe %d to consumer on socket %d", |
1230 | pipe_name, | |
e9404c27 JG |
1231 | pipe, *consumer_sock->fd_ptr); |
1232 | ret = consumer_send_fds(consumer_sock, &pipe, 1); | |
1233 | if (ret < 0) { | |
1234 | goto error; | |
1235 | } | |
1236 | ||
62c43103 | 1237 | DBG2("%s pipe successfully sent", pipe_name); |
e9404c27 | 1238 | error: |
3e4dc117 | 1239 | pthread_mutex_unlock(consumer_sock->lock); |
e9404c27 JG |
1240 | return ret; |
1241 | } | |
1242 | ||
62c43103 JD |
1243 | int consumer_send_channel_monitor_pipe(struct consumer_socket *consumer_sock, |
1244 | int pipe) | |
1245 | { | |
1246 | return consumer_send_pipe(consumer_sock, | |
1247 | LTTNG_CONSUMER_SET_CHANNEL_MONITOR_PIPE, pipe); | |
1248 | } | |
1249 | ||
806e2684 | 1250 | /* |
5e280d77 MD |
1251 | * Ask the consumer if the data is pending for the specific session id. |
1252 | * Returns 1 if data is pending, 0 otherwise, or < 0 on error. | |
806e2684 | 1253 | */ |
d88aee68 | 1254 | int consumer_is_data_pending(uint64_t session_id, |
806e2684 DG |
1255 | struct consumer_output *consumer) |
1256 | { | |
1257 | int ret; | |
6d805429 | 1258 | int32_t ret_code = 0; /* Default is that the data is NOT pending */ |
806e2684 DG |
1259 | struct consumer_socket *socket; |
1260 | struct lttng_ht_iter iter; | |
1261 | struct lttcomm_consumer_msg msg; | |
1262 | ||
1263 | assert(consumer); | |
1264 | ||
53efb85a | 1265 | DBG3("Consumer data pending for id %" PRIu64, session_id); |
806e2684 | 1266 | |
53efb85a MD |
1267 | memset(&msg, 0, sizeof(msg)); |
1268 | msg.cmd_type = LTTNG_CONSUMER_DATA_PENDING; | |
d88aee68 | 1269 | msg.u.data_pending.session_id = session_id; |
806e2684 | 1270 | |
c8f59ee5 | 1271 | /* Send command for each consumer */ |
b82c5c4d | 1272 | rcu_read_lock(); |
806e2684 DG |
1273 | cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket, |
1274 | node.node) { | |
806e2684 | 1275 | pthread_mutex_lock(socket->lock); |
52898cb1 | 1276 | ret = consumer_socket_send(socket, &msg, sizeof(msg)); |
806e2684 | 1277 | if (ret < 0) { |
806e2684 | 1278 | pthread_mutex_unlock(socket->lock); |
b82c5c4d | 1279 | goto error_unlock; |
806e2684 DG |
1280 | } |
1281 | ||
f50f23d9 DG |
1282 | /* |
1283 | * No need for a recv reply status because the answer to the command is | |
1284 | * the reply status message. | |
1285 | */ | |
1286 | ||
52898cb1 DG |
1287 | ret = consumer_socket_recv(socket, &ret_code, sizeof(ret_code)); |
1288 | if (ret < 0) { | |
806e2684 | 1289 | pthread_mutex_unlock(socket->lock); |
b82c5c4d | 1290 | goto error_unlock; |
806e2684 | 1291 | } |
806e2684 DG |
1292 | pthread_mutex_unlock(socket->lock); |
1293 | ||
6d805429 | 1294 | if (ret_code == 1) { |
806e2684 DG |
1295 | break; |
1296 | } | |
1297 | } | |
b82c5c4d | 1298 | rcu_read_unlock(); |
806e2684 | 1299 | |
d88aee68 DG |
1300 | DBG("Consumer data is %s pending for session id %" PRIu64, |
1301 | ret_code == 1 ? "" : "NOT", session_id); | |
806e2684 DG |
1302 | return ret_code; |
1303 | ||
b82c5c4d DG |
1304 | error_unlock: |
1305 | rcu_read_unlock(); | |
806e2684 DG |
1306 | return -1; |
1307 | } | |
7972aab2 DG |
1308 | |
1309 | /* | |
1310 | * Send a flush command to consumer using the given channel key. | |
1311 | * | |
1312 | * Return 0 on success else a negative value. | |
1313 | */ | |
1314 | int consumer_flush_channel(struct consumer_socket *socket, uint64_t key) | |
1315 | { | |
1316 | int ret; | |
1317 | struct lttcomm_consumer_msg msg; | |
1318 | ||
1319 | assert(socket); | |
7972aab2 DG |
1320 | |
1321 | DBG2("Consumer flush channel key %" PRIu64, key); | |
1322 | ||
53efb85a | 1323 | memset(&msg, 0, sizeof(msg)); |
7972aab2 DG |
1324 | msg.cmd_type = LTTNG_CONSUMER_FLUSH_CHANNEL; |
1325 | msg.u.flush_channel.key = key; | |
1326 | ||
1327 | pthread_mutex_lock(socket->lock); | |
1328 | health_code_update(); | |
1329 | ||
1330 | ret = consumer_send_msg(socket, &msg); | |
1331 | if (ret < 0) { | |
1332 | goto end; | |
1333 | } | |
1334 | ||
1335 | end: | |
1336 | health_code_update(); | |
1337 | pthread_mutex_unlock(socket->lock); | |
1338 | return ret; | |
1339 | } | |
1340 | ||
0dd01979 MD |
1341 | /* |
1342 | * Send a clear quiescent command to consumer using the given channel key. | |
1343 | * | |
1344 | * Return 0 on success else a negative value. | |
1345 | */ | |
1346 | int consumer_clear_quiescent_channel(struct consumer_socket *socket, uint64_t key) | |
1347 | { | |
1348 | int ret; | |
1349 | struct lttcomm_consumer_msg msg; | |
1350 | ||
1351 | assert(socket); | |
1352 | ||
1353 | DBG2("Consumer clear quiescent channel key %" PRIu64, key); | |
1354 | ||
1355 | memset(&msg, 0, sizeof(msg)); | |
1356 | msg.cmd_type = LTTNG_CONSUMER_CLEAR_QUIESCENT_CHANNEL; | |
1357 | msg.u.clear_quiescent_channel.key = key; | |
1358 | ||
1359 | pthread_mutex_lock(socket->lock); | |
1360 | health_code_update(); | |
1361 | ||
1362 | ret = consumer_send_msg(socket, &msg); | |
1363 | if (ret < 0) { | |
1364 | goto end; | |
1365 | } | |
1366 | ||
1367 | end: | |
1368 | health_code_update(); | |
1369 | pthread_mutex_unlock(socket->lock); | |
1370 | return ret; | |
1371 | } | |
1372 | ||
7972aab2 | 1373 | /* |
dc2bbdae MD |
1374 | * Send a close metadata command to consumer using the given channel key. |
1375 | * Called with registry lock held. | |
7972aab2 DG |
1376 | * |
1377 | * Return 0 on success else a negative value. | |
1378 | */ | |
1379 | int consumer_close_metadata(struct consumer_socket *socket, | |
1380 | uint64_t metadata_key) | |
1381 | { | |
1382 | int ret; | |
1383 | struct lttcomm_consumer_msg msg; | |
1384 | ||
1385 | assert(socket); | |
7972aab2 DG |
1386 | |
1387 | DBG2("Consumer close metadata channel key %" PRIu64, metadata_key); | |
1388 | ||
53efb85a | 1389 | memset(&msg, 0, sizeof(msg)); |
7972aab2 DG |
1390 | msg.cmd_type = LTTNG_CONSUMER_CLOSE_METADATA; |
1391 | msg.u.close_metadata.key = metadata_key; | |
1392 | ||
1393 | pthread_mutex_lock(socket->lock); | |
1394 | health_code_update(); | |
1395 | ||
1396 | ret = consumer_send_msg(socket, &msg); | |
1397 | if (ret < 0) { | |
1398 | goto end; | |
1399 | } | |
1400 | ||
1401 | end: | |
1402 | health_code_update(); | |
1403 | pthread_mutex_unlock(socket->lock); | |
1404 | return ret; | |
1405 | } | |
1406 | ||
1407 | /* | |
1408 | * Send a setup metdata command to consumer using the given channel key. | |
1409 | * | |
1410 | * Return 0 on success else a negative value. | |
1411 | */ | |
1412 | int consumer_setup_metadata(struct consumer_socket *socket, | |
1413 | uint64_t metadata_key) | |
1414 | { | |
1415 | int ret; | |
1416 | struct lttcomm_consumer_msg msg; | |
1417 | ||
1418 | assert(socket); | |
7972aab2 DG |
1419 | |
1420 | DBG2("Consumer setup metadata channel key %" PRIu64, metadata_key); | |
1421 | ||
53efb85a | 1422 | memset(&msg, 0, sizeof(msg)); |
7972aab2 DG |
1423 | msg.cmd_type = LTTNG_CONSUMER_SETUP_METADATA; |
1424 | msg.u.setup_metadata.key = metadata_key; | |
1425 | ||
1426 | pthread_mutex_lock(socket->lock); | |
1427 | health_code_update(); | |
1428 | ||
1429 | ret = consumer_send_msg(socket, &msg); | |
1430 | if (ret < 0) { | |
1431 | goto end; | |
1432 | } | |
1433 | ||
1434 | end: | |
1435 | health_code_update(); | |
1436 | pthread_mutex_unlock(socket->lock); | |
1437 | return ret; | |
1438 | } | |
1439 | ||
1440 | /* | |
dc2bbdae MD |
1441 | * Send metadata string to consumer. |
1442 | * RCU read-side lock must be held to guarantee existence of socket. | |
7972aab2 DG |
1443 | * |
1444 | * Return 0 on success else a negative value. | |
1445 | */ | |
1446 | int consumer_push_metadata(struct consumer_socket *socket, | |
1447 | uint64_t metadata_key, char *metadata_str, size_t len, | |
93ec662e | 1448 | size_t target_offset, uint64_t version) |
7972aab2 DG |
1449 | { |
1450 | int ret; | |
1451 | struct lttcomm_consumer_msg msg; | |
1452 | ||
1453 | assert(socket); | |
7972aab2 | 1454 | |
9363801e | 1455 | DBG2("Consumer push metadata to consumer socket %d", *socket->fd_ptr); |
7972aab2 | 1456 | |
dc2bbdae MD |
1457 | pthread_mutex_lock(socket->lock); |
1458 | ||
53efb85a | 1459 | memset(&msg, 0, sizeof(msg)); |
7972aab2 DG |
1460 | msg.cmd_type = LTTNG_CONSUMER_PUSH_METADATA; |
1461 | msg.u.push_metadata.key = metadata_key; | |
1462 | msg.u.push_metadata.target_offset = target_offset; | |
1463 | msg.u.push_metadata.len = len; | |
93ec662e | 1464 | msg.u.push_metadata.version = version; |
7972aab2 | 1465 | |
7972aab2 DG |
1466 | health_code_update(); |
1467 | ret = consumer_send_msg(socket, &msg); | |
331744e3 | 1468 | if (ret < 0 || len == 0) { |
7972aab2 DG |
1469 | goto end; |
1470 | } | |
1471 | ||
9363801e DG |
1472 | DBG3("Consumer pushing metadata on sock %d of len %zu", *socket->fd_ptr, |
1473 | len); | |
7972aab2 | 1474 | |
52898cb1 | 1475 | ret = consumer_socket_send(socket, metadata_str, len); |
7972aab2 DG |
1476 | if (ret < 0) { |
1477 | goto end; | |
1478 | } | |
1479 | ||
1480 | health_code_update(); | |
1481 | ret = consumer_recv_status_reply(socket); | |
1482 | if (ret < 0) { | |
1483 | goto end; | |
1484 | } | |
1485 | ||
1486 | end: | |
dc2bbdae | 1487 | pthread_mutex_unlock(socket->lock); |
7972aab2 | 1488 | health_code_update(); |
7972aab2 DG |
1489 | return ret; |
1490 | } | |
6dc3064a DG |
1491 | |
1492 | /* | |
1493 | * Ask the consumer to snapshot a specific channel using the key. | |
1494 | * | |
9a654598 | 1495 | * Returns LTTNG_OK on success or else an LTTng error code. |
6dc3064a | 1496 | */ |
9a654598 | 1497 | enum lttng_error_code consumer_snapshot_channel(struct consumer_socket *socket, |
348a81dc | 1498 | uint64_t key, const struct consumer_output *output, int metadata, |
d2956687 JG |
1499 | uid_t uid, gid_t gid, const char *channel_path, int wait, |
1500 | uint64_t nb_packets_per_stream) | |
6dc3064a DG |
1501 | { |
1502 | int ret; | |
9a654598 | 1503 | enum lttng_error_code status = LTTNG_OK; |
6dc3064a DG |
1504 | struct lttcomm_consumer_msg msg; |
1505 | ||
1506 | assert(socket); | |
6dc3064a | 1507 | assert(output); |
6dc3064a DG |
1508 | |
1509 | DBG("Consumer snapshot channel key %" PRIu64, key); | |
1510 | ||
ee91bab2 | 1511 | memset(&msg, 0, sizeof(msg)); |
6dc3064a DG |
1512 | msg.cmd_type = LTTNG_CONSUMER_SNAPSHOT_CHANNEL; |
1513 | msg.u.snapshot_channel.key = key; | |
d07ceecd | 1514 | msg.u.snapshot_channel.nb_packets_per_stream = nb_packets_per_stream; |
6dc3064a DG |
1515 | msg.u.snapshot_channel.metadata = metadata; |
1516 | ||
348a81dc | 1517 | if (output->type == CONSUMER_DST_NET) { |
d2956687 | 1518 | msg.u.snapshot_channel.relayd_id = |
348a81dc | 1519 | output->net_seq_index; |
6dc3064a | 1520 | msg.u.snapshot_channel.use_relayd = 1; |
6dc3064a | 1521 | } else { |
07b86b52 | 1522 | msg.u.snapshot_channel.relayd_id = (uint64_t) -1ULL; |
d2956687 JG |
1523 | } |
1524 | ret = lttng_strncpy(msg.u.snapshot_channel.pathname, | |
1525 | channel_path, | |
1526 | sizeof(msg.u.snapshot_channel.pathname)); | |
1527 | if (ret < 0) { | |
1528 | ERR("Snapshot path exceeds the maximal allowed length of %zu bytes (%zu bytes required) with path \"%s\"", | |
1529 | sizeof(msg.u.snapshot_channel.pathname), | |
1530 | strlen(channel_path), | |
1531 | channel_path); | |
1532 | status = LTTNG_ERR_SNAPSHOT_FAIL; | |
1533 | goto error; | |
6dc3064a DG |
1534 | } |
1535 | ||
1536 | health_code_update(); | |
9d1103e6 | 1537 | pthread_mutex_lock(socket->lock); |
6dc3064a | 1538 | ret = consumer_send_msg(socket, &msg); |
9d1103e6 | 1539 | pthread_mutex_unlock(socket->lock); |
6dc3064a | 1540 | if (ret < 0) { |
9bbfb88c MD |
1541 | switch (-ret) { |
1542 | case LTTCOMM_CONSUMERD_CHAN_NOT_FOUND: | |
9a654598 | 1543 | status = LTTNG_ERR_CHAN_NOT_FOUND; |
9bbfb88c MD |
1544 | break; |
1545 | default: | |
9a654598 | 1546 | status = LTTNG_ERR_SNAPSHOT_FAIL; |
9bbfb88c MD |
1547 | break; |
1548 | } | |
6dc3064a DG |
1549 | goto error; |
1550 | } | |
1551 | ||
1552 | error: | |
1553 | health_code_update(); | |
9a654598 | 1554 | return status; |
6dc3064a | 1555 | } |
fb83fe64 JD |
1556 | |
1557 | /* | |
1558 | * Ask the consumer the number of discarded events for a channel. | |
1559 | */ | |
1560 | int consumer_get_discarded_events(uint64_t session_id, uint64_t channel_key, | |
1561 | struct consumer_output *consumer, uint64_t *discarded) | |
1562 | { | |
1563 | int ret; | |
1564 | struct consumer_socket *socket; | |
1565 | struct lttng_ht_iter iter; | |
1566 | struct lttcomm_consumer_msg msg; | |
1567 | ||
1568 | assert(consumer); | |
1569 | ||
1570 | DBG3("Consumer discarded events id %" PRIu64, session_id); | |
1571 | ||
1572 | memset(&msg, 0, sizeof(msg)); | |
1573 | msg.cmd_type = LTTNG_CONSUMER_DISCARDED_EVENTS; | |
1574 | msg.u.discarded_events.session_id = session_id; | |
1575 | msg.u.discarded_events.channel_key = channel_key; | |
1576 | ||
1577 | *discarded = 0; | |
1578 | ||
1579 | /* Send command for each consumer */ | |
1580 | rcu_read_lock(); | |
1581 | cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket, | |
1582 | node.node) { | |
1583 | uint64_t consumer_discarded = 0; | |
1584 | pthread_mutex_lock(socket->lock); | |
1585 | ret = consumer_socket_send(socket, &msg, sizeof(msg)); | |
1586 | if (ret < 0) { | |
1587 | pthread_mutex_unlock(socket->lock); | |
1588 | goto end; | |
1589 | } | |
1590 | ||
1591 | /* | |
1592 | * No need for a recv reply status because the answer to the | |
1593 | * command is the reply status message. | |
1594 | */ | |
1595 | ret = consumer_socket_recv(socket, &consumer_discarded, | |
1596 | sizeof(consumer_discarded)); | |
1597 | if (ret < 0) { | |
1598 | ERR("get discarded events"); | |
1599 | pthread_mutex_unlock(socket->lock); | |
1600 | goto end; | |
1601 | } | |
1602 | pthread_mutex_unlock(socket->lock); | |
1603 | *discarded += consumer_discarded; | |
1604 | } | |
1605 | ret = 0; | |
1606 | DBG("Consumer discarded %" PRIu64 " events in session id %" PRIu64, | |
1607 | *discarded, session_id); | |
1608 | ||
1609 | end: | |
1610 | rcu_read_unlock(); | |
1611 | return ret; | |
1612 | } | |
1613 | ||
1614 | /* | |
1615 | * Ask the consumer the number of lost packets for a channel. | |
1616 | */ | |
1617 | int consumer_get_lost_packets(uint64_t session_id, uint64_t channel_key, | |
1618 | struct consumer_output *consumer, uint64_t *lost) | |
1619 | { | |
1620 | int ret; | |
1621 | struct consumer_socket *socket; | |
1622 | struct lttng_ht_iter iter; | |
1623 | struct lttcomm_consumer_msg msg; | |
1624 | ||
1625 | assert(consumer); | |
1626 | ||
1627 | DBG3("Consumer lost packets id %" PRIu64, session_id); | |
1628 | ||
1629 | memset(&msg, 0, sizeof(msg)); | |
1630 | msg.cmd_type = LTTNG_CONSUMER_LOST_PACKETS; | |
1631 | msg.u.lost_packets.session_id = session_id; | |
1632 | msg.u.lost_packets.channel_key = channel_key; | |
1633 | ||
1634 | *lost = 0; | |
1635 | ||
1636 | /* Send command for each consumer */ | |
1637 | rcu_read_lock(); | |
1638 | cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket, | |
1639 | node.node) { | |
1640 | uint64_t consumer_lost = 0; | |
1641 | pthread_mutex_lock(socket->lock); | |
1642 | ret = consumer_socket_send(socket, &msg, sizeof(msg)); | |
1643 | if (ret < 0) { | |
1644 | pthread_mutex_unlock(socket->lock); | |
1645 | goto end; | |
1646 | } | |
1647 | ||
1648 | /* | |
1649 | * No need for a recv reply status because the answer to the | |
1650 | * command is the reply status message. | |
1651 | */ | |
1652 | ret = consumer_socket_recv(socket, &consumer_lost, | |
1653 | sizeof(consumer_lost)); | |
1654 | if (ret < 0) { | |
1655 | ERR("get lost packets"); | |
1656 | pthread_mutex_unlock(socket->lock); | |
1657 | goto end; | |
1658 | } | |
1659 | pthread_mutex_unlock(socket->lock); | |
1660 | *lost += consumer_lost; | |
1661 | } | |
1662 | ret = 0; | |
1663 | DBG("Consumer lost %" PRIu64 " packets in session id %" PRIu64, | |
1664 | *lost, session_id); | |
1665 | ||
1666 | end: | |
1667 | rcu_read_unlock(); | |
1668 | return ret; | |
1669 | } | |
a1ae2ea5 | 1670 | |
5c408ad8 JD |
1671 | /* |
1672 | * Ask the consumer to rotate a channel. | |
5c408ad8 JD |
1673 | * |
1674 | * The new_chunk_id is the session->rotate_count that has been incremented | |
1675 | * when the rotation started. On the relay, this allows to keep track in which | |
1676 | * chunk each stream is currently writing to (for the rotate_pending operation). | |
1677 | */ | |
1678 | int consumer_rotate_channel(struct consumer_socket *socket, uint64_t key, | |
1679 | uid_t uid, gid_t gid, struct consumer_output *output, | |
d2956687 | 1680 | bool is_metadata_channel) |
5c408ad8 JD |
1681 | { |
1682 | int ret; | |
1683 | struct lttcomm_consumer_msg msg; | |
1684 | ||
1685 | assert(socket); | |
1686 | ||
1687 | DBG("Consumer rotate channel key %" PRIu64, key); | |
1688 | ||
1689 | pthread_mutex_lock(socket->lock); | |
1690 | memset(&msg, 0, sizeof(msg)); | |
1691 | msg.cmd_type = LTTNG_CONSUMER_ROTATE_CHANNEL; | |
1692 | msg.u.rotate_channel.key = key; | |
1693 | msg.u.rotate_channel.metadata = !!is_metadata_channel; | |
5c408ad8 JD |
1694 | |
1695 | if (output->type == CONSUMER_DST_NET) { | |
1696 | msg.u.rotate_channel.relayd_id = output->net_seq_index; | |
5c408ad8 JD |
1697 | } else { |
1698 | msg.u.rotate_channel.relayd_id = (uint64_t) -1ULL; | |
5c408ad8 JD |
1699 | } |
1700 | ||
1701 | health_code_update(); | |
1702 | ret = consumer_send_msg(socket, &msg); | |
1703 | if (ret < 0) { | |
20f37cb4 MD |
1704 | switch (-ret) { |
1705 | case LTTCOMM_CONSUMERD_CHAN_NOT_FOUND: | |
1706 | ret = -LTTNG_ERR_CHAN_NOT_FOUND; | |
1707 | break; | |
1708 | default: | |
1709 | ret = -LTTNG_ERR_ROTATION_FAIL_CONSUMER; | |
1710 | break; | |
1711 | } | |
5c408ad8 JD |
1712 | goto error; |
1713 | } | |
5c408ad8 JD |
1714 | error: |
1715 | pthread_mutex_unlock(socket->lock); | |
1716 | health_code_update(); | |
1717 | return ret; | |
1718 | } | |
1719 | ||
51a4828f MD |
1720 | int consumer_clear_channel(struct consumer_socket *socket, uint64_t key) |
1721 | { | |
1722 | int ret; | |
1723 | struct lttcomm_consumer_msg msg; | |
1724 | ||
1725 | assert(socket); | |
1726 | ||
1727 | DBG("Consumer clear channel %" PRIu64, key); | |
1728 | ||
1729 | memset(&msg, 0, sizeof(msg)); | |
1730 | msg.cmd_type = LTTNG_CONSUMER_CLEAR_CHANNEL; | |
1731 | msg.u.clear_channel.key = key; | |
1732 | ||
1733 | health_code_update(); | |
1734 | ||
1735 | pthread_mutex_lock(socket->lock); | |
1736 | ret = consumer_send_msg(socket, &msg); | |
1737 | if (ret < 0) { | |
1738 | goto error_socket; | |
1739 | } | |
1740 | ||
1741 | error_socket: | |
1742 | pthread_mutex_unlock(socket->lock); | |
1743 | ||
1744 | health_code_update(); | |
1745 | return ret; | |
1746 | } | |
1747 | ||
d2956687 JG |
1748 | int consumer_init(struct consumer_socket *socket, |
1749 | const lttng_uuid sessiond_uuid) | |
00fb02ac JD |
1750 | { |
1751 | int ret; | |
d2956687 JG |
1752 | struct lttcomm_consumer_msg msg = { |
1753 | .cmd_type = LTTNG_CONSUMER_INIT, | |
1754 | }; | |
00fb02ac JD |
1755 | |
1756 | assert(socket); | |
00fb02ac | 1757 | |
d2956687 JG |
1758 | DBG("Sending consumer initialization command"); |
1759 | lttng_uuid_copy(msg.u.init.sessiond_uuid, sessiond_uuid); | |
00fb02ac JD |
1760 | |
1761 | health_code_update(); | |
1762 | ret = consumer_send_msg(socket, &msg); | |
1763 | if (ret < 0) { | |
1764 | goto error; | |
1765 | } | |
1766 | ||
d88744a4 JD |
1767 | error: |
1768 | health_code_update(); | |
1769 | return ret; | |
1770 | } | |
1771 | ||
1772 | /* | |
d2956687 | 1773 | * Ask the consumer to create a new chunk for a given session. |
92816cc3 | 1774 | * |
d2956687 | 1775 | * Called with the consumer socket lock held. |
92816cc3 | 1776 | */ |
d2956687 JG |
1777 | int consumer_create_trace_chunk(struct consumer_socket *socket, |
1778 | uint64_t relayd_id, uint64_t session_id, | |
5da88b0f MD |
1779 | struct lttng_trace_chunk *chunk, |
1780 | const char *domain_subdir) | |
92816cc3 JG |
1781 | { |
1782 | int ret; | |
d2956687 JG |
1783 | enum lttng_trace_chunk_status chunk_status; |
1784 | struct lttng_credentials chunk_credentials; | |
5da88b0f MD |
1785 | const struct lttng_directory_handle *chunk_directory_handle = NULL; |
1786 | struct lttng_directory_handle *domain_handle = NULL; | |
1787 | int domain_dirfd; | |
d2956687 | 1788 | const char *chunk_name; |
913a542b | 1789 | bool chunk_name_overridden; |
d2956687 JG |
1790 | uint64_t chunk_id; |
1791 | time_t creation_timestamp; | |
1792 | char creation_timestamp_buffer[ISO8601_STR_LEN]; | |
1793 | const char *creation_timestamp_str = "(none)"; | |
1794 | const bool chunk_has_local_output = relayd_id == -1ULL; | |
27d444d3 | 1795 | enum lttng_trace_chunk_status tc_status; |
d2956687 JG |
1796 | struct lttcomm_consumer_msg msg = { |
1797 | .cmd_type = LTTNG_CONSUMER_CREATE_TRACE_CHUNK, | |
1798 | .u.create_trace_chunk.session_id = session_id, | |
1799 | }; | |
92816cc3 JG |
1800 | |
1801 | assert(socket); | |
d2956687 | 1802 | assert(chunk); |
92816cc3 | 1803 | |
d2956687 JG |
1804 | if (relayd_id != -1ULL) { |
1805 | LTTNG_OPTIONAL_SET(&msg.u.create_trace_chunk.relayd_id, | |
1806 | relayd_id); | |
1807 | } | |
92816cc3 | 1808 | |
d2956687 | 1809 | chunk_status = lttng_trace_chunk_get_name(chunk, &chunk_name, |
913a542b | 1810 | &chunk_name_overridden); |
d2956687 JG |
1811 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK && |
1812 | chunk_status != LTTNG_TRACE_CHUNK_STATUS_NONE) { | |
1813 | ERR("Failed to get name of trace chunk"); | |
1814 | ret = -LTTNG_ERR_FATAL; | |
92816cc3 JG |
1815 | goto error; |
1816 | } | |
913a542b | 1817 | if (chunk_name_overridden) { |
d2956687 JG |
1818 | ret = lttng_strncpy(msg.u.create_trace_chunk.override_name, |
1819 | chunk_name, | |
1820 | sizeof(msg.u.create_trace_chunk.override_name)); | |
1821 | if (ret) { | |
1822 | ERR("Trace chunk name \"%s\" exceeds the maximal length allowed by the consumer protocol", | |
1823 | chunk_name); | |
1824 | ret = -LTTNG_ERR_FATAL; | |
1825 | goto error; | |
1826 | } | |
1827 | } | |
92816cc3 | 1828 | |
d2956687 JG |
1829 | chunk_status = lttng_trace_chunk_get_creation_timestamp(chunk, |
1830 | &creation_timestamp); | |
1831 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
1832 | ret = -LTTNG_ERR_FATAL; | |
92816cc3 JG |
1833 | goto error; |
1834 | } | |
d2956687 JG |
1835 | msg.u.create_trace_chunk.creation_timestamp = |
1836 | (uint64_t) creation_timestamp; | |
1837 | /* Only used for logging purposes. */ | |
1838 | ret = time_to_iso8601_str(creation_timestamp, | |
1839 | creation_timestamp_buffer, | |
1840 | sizeof(creation_timestamp_buffer)); | |
1841 | creation_timestamp_str = !ret ? creation_timestamp_buffer : | |
1842 | "(formatting error)"; | |
1843 | ||
1844 | chunk_status = lttng_trace_chunk_get_id(chunk, &chunk_id); | |
1845 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
1846 | /* | |
1847 | * Anonymous trace chunks should never be transmitted | |
1848 | * to remote peers (consumerd and relayd). They are used | |
1849 | * internally for backward-compatibility purposes. | |
1850 | */ | |
1851 | ret = -LTTNG_ERR_FATAL; | |
1852 | goto error; | |
1853 | } | |
1854 | msg.u.create_trace_chunk.chunk_id = chunk_id; | |
92816cc3 | 1855 | |
d2956687 | 1856 | if (chunk_has_local_output) { |
cbf53d23 | 1857 | chunk_status = lttng_trace_chunk_borrow_chunk_directory_handle( |
d2956687 JG |
1858 | chunk, &chunk_directory_handle); |
1859 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
1860 | ret = -LTTNG_ERR_FATAL; | |
1861 | goto error; | |
1862 | } | |
e5add6d0 JG |
1863 | chunk_status = lttng_trace_chunk_get_credentials( |
1864 | chunk, &chunk_credentials); | |
1865 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
1866 | /* | |
1867 | * Not associating credentials to a sessiond chunk is a | |
1868 | * fatal internal error. | |
1869 | */ | |
1870 | ret = -LTTNG_ERR_FATAL; | |
1871 | goto error; | |
1872 | } | |
27d444d3 JR |
1873 | tc_status = lttng_trace_chunk_create_subdirectory( |
1874 | chunk, domain_subdir); | |
1875 | if (tc_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
5da88b0f MD |
1876 | PERROR("Failed to create chunk domain output directory \"%s\"", |
1877 | domain_subdir); | |
1878 | ret = -LTTNG_ERR_FATAL; | |
1879 | goto error; | |
1880 | } | |
1881 | domain_handle = lttng_directory_handle_create_from_handle( | |
1882 | domain_subdir, | |
1883 | chunk_directory_handle); | |
1884 | if (!domain_handle) { | |
1885 | ret = -LTTNG_ERR_FATAL; | |
1886 | goto error; | |
1887 | } | |
1888 | ||
1889 | /* | |
1890 | * This will only compile on platforms that support | |
1891 | * dirfd (POSIX.2008). This is fine as the session daemon | |
1892 | * is only built for such platforms. | |
1893 | * | |
1894 | * The ownership of the chunk directory handle's is maintained | |
1895 | * by the trace chunk. | |
1896 | */ | |
1897 | domain_dirfd = lttng_directory_handle_get_dirfd( | |
1898 | domain_handle); | |
1899 | assert(domain_dirfd >= 0); | |
1900 | ||
e5add6d0 JG |
1901 | msg.u.create_trace_chunk.credentials.value.uid = |
1902 | chunk_credentials.uid; | |
1903 | msg.u.create_trace_chunk.credentials.value.gid = | |
1904 | chunk_credentials.gid; | |
1905 | msg.u.create_trace_chunk.credentials.is_set = 1; | |
d2956687 | 1906 | } |
d88744a4 | 1907 | |
d2956687 JG |
1908 | DBG("Sending consumer create trace chunk command: relayd_id = %" PRId64 |
1909 | ", session_id = %" PRIu64 ", chunk_id = %" PRIu64 | |
1910 | ", creation_timestamp = %s", | |
1911 | relayd_id, session_id, chunk_id, | |
1912 | creation_timestamp_str); | |
d88744a4 JD |
1913 | health_code_update(); |
1914 | ret = consumer_send_msg(socket, &msg); | |
d2956687 | 1915 | health_code_update(); |
d88744a4 | 1916 | if (ret < 0) { |
d2956687 JG |
1917 | ERR("Trace chunk creation error on consumer"); |
1918 | ret = -LTTNG_ERR_CREATE_TRACE_CHUNK_FAIL_CONSUMER; | |
d88744a4 JD |
1919 | goto error; |
1920 | } | |
1921 | ||
d2956687 | 1922 | if (chunk_has_local_output) { |
5da88b0f | 1923 | DBG("Sending trace chunk domain directory fd to consumer"); |
d2956687 | 1924 | health_code_update(); |
5da88b0f | 1925 | ret = consumer_send_fds(socket, &domain_dirfd, 1); |
d2956687 JG |
1926 | health_code_update(); |
1927 | if (ret < 0) { | |
1928 | ERR("Trace chunk creation error on consumer"); | |
1929 | ret = -LTTNG_ERR_CREATE_TRACE_CHUNK_FAIL_CONSUMER; | |
1930 | goto error; | |
1931 | } | |
d88744a4 | 1932 | } |
00fb02ac | 1933 | error: |
5da88b0f | 1934 | lttng_directory_handle_put(domain_handle); |
00fb02ac JD |
1935 | return ret; |
1936 | } | |
1937 | ||
a1ae2ea5 | 1938 | /* |
d2956687 | 1939 | * Ask the consumer to close a trace chunk for a given session. |
a1ae2ea5 JD |
1940 | * |
1941 | * Called with the consumer socket lock held. | |
1942 | */ | |
d2956687 JG |
1943 | int consumer_close_trace_chunk(struct consumer_socket *socket, |
1944 | uint64_t relayd_id, uint64_t session_id, | |
ecd1a12f MD |
1945 | struct lttng_trace_chunk *chunk, |
1946 | char *closed_trace_chunk_path) | |
a1ae2ea5 JD |
1947 | { |
1948 | int ret; | |
d2956687 JG |
1949 | enum lttng_trace_chunk_status chunk_status; |
1950 | struct lttcomm_consumer_msg msg = { | |
bbc4768c JG |
1951 | .cmd_type = LTTNG_CONSUMER_CLOSE_TRACE_CHUNK, |
1952 | .u.close_trace_chunk.session_id = session_id, | |
d2956687 | 1953 | }; |
ecd1a12f | 1954 | struct lttcomm_consumer_close_trace_chunk_reply reply; |
d2956687 JG |
1955 | uint64_t chunk_id; |
1956 | time_t close_timestamp; | |
bbc4768c JG |
1957 | enum lttng_trace_chunk_command_type close_command; |
1958 | const char *close_command_name = "none"; | |
ecd1a12f | 1959 | struct lttng_dynamic_buffer path_reception_buffer; |
a1ae2ea5 JD |
1960 | |
1961 | assert(socket); | |
ecd1a12f | 1962 | lttng_dynamic_buffer_init(&path_reception_buffer); |
a1ae2ea5 | 1963 | |
d2956687 | 1964 | if (relayd_id != -1ULL) { |
bbc4768c JG |
1965 | LTTNG_OPTIONAL_SET( |
1966 | &msg.u.close_trace_chunk.relayd_id, relayd_id); | |
1967 | } | |
1968 | ||
1969 | chunk_status = lttng_trace_chunk_get_close_command( | |
1970 | chunk, &close_command); | |
1971 | switch (chunk_status) { | |
1972 | case LTTNG_TRACE_CHUNK_STATUS_OK: | |
1973 | LTTNG_OPTIONAL_SET(&msg.u.close_trace_chunk.close_command, | |
1974 | (uint32_t) close_command); | |
1975 | break; | |
1976 | case LTTNG_TRACE_CHUNK_STATUS_NONE: | |
1977 | break; | |
1978 | default: | |
1979 | ERR("Failed to get trace chunk close command"); | |
1980 | ret = -1; | |
1981 | goto error; | |
a1ae2ea5 JD |
1982 | } |
1983 | ||
d2956687 JG |
1984 | chunk_status = lttng_trace_chunk_get_id(chunk, &chunk_id); |
1985 | /* | |
1986 | * Anonymous trace chunks should never be transmitted to remote peers | |
1987 | * (consumerd and relayd). They are used internally for | |
1988 | * backward-compatibility purposes. | |
1989 | */ | |
1990 | assert(chunk_status == LTTNG_TRACE_CHUNK_STATUS_OK); | |
1991 | msg.u.close_trace_chunk.chunk_id = chunk_id; | |
1992 | ||
1993 | chunk_status = lttng_trace_chunk_get_close_timestamp(chunk, | |
1994 | &close_timestamp); | |
1995 | /* | |
1996 | * A trace chunk should be closed locally before being closed remotely. | |
1997 | * Otherwise, the close timestamp would never be transmitted to the | |
1998 | * peers. | |
1999 | */ | |
2000 | assert(chunk_status == LTTNG_TRACE_CHUNK_STATUS_OK); | |
2001 | msg.u.close_trace_chunk.close_timestamp = (uint64_t) close_timestamp; | |
2002 | ||
bbc4768c JG |
2003 | if (msg.u.close_trace_chunk.close_command.is_set) { |
2004 | close_command_name = lttng_trace_chunk_command_type_get_name( | |
2005 | close_command); | |
2006 | } | |
d2956687 | 2007 | DBG("Sending consumer close trace chunk command: relayd_id = %" PRId64 |
bbc4768c JG |
2008 | ", session_id = %" PRIu64 ", chunk_id = %" PRIu64 |
2009 | ", close command = \"%s\"", | |
2010 | relayd_id, session_id, chunk_id, close_command_name); | |
a1ae2ea5 JD |
2011 | |
2012 | health_code_update(); | |
ecd1a12f | 2013 | ret = consumer_socket_send(socket, &msg, sizeof(struct lttcomm_consumer_msg)); |
a1ae2ea5 | 2014 | if (ret < 0) { |
d2956687 | 2015 | ret = -LTTNG_ERR_CLOSE_TRACE_CHUNK_FAIL_CONSUMER; |
a1ae2ea5 JD |
2016 | goto error; |
2017 | } | |
ecd1a12f MD |
2018 | ret = consumer_socket_recv(socket, &reply, sizeof(reply)); |
2019 | if (ret < 0) { | |
2020 | ret = -LTTNG_ERR_CLOSE_TRACE_CHUNK_FAIL_CONSUMER; | |
2021 | goto error; | |
2022 | } | |
2023 | if (reply.path_length >= LTTNG_PATH_MAX) { | |
2024 | ERR("Invalid path returned by relay daemon: %" PRIu32 "bytes exceeds maximal allowed length of %d bytes", | |
2025 | reply.path_length, LTTNG_PATH_MAX); | |
2026 | ret = -LTTNG_ERR_INVALID_PROTOCOL; | |
2027 | goto error; | |
2028 | } | |
2029 | ret = lttng_dynamic_buffer_set_size(&path_reception_buffer, | |
2030 | reply.path_length); | |
2031 | if (ret) { | |
2032 | ERR("Failed to allocate reception buffer of path returned by the \"close trace chunk\" command"); | |
2033 | ret = -LTTNG_ERR_NOMEM; | |
2034 | goto error; | |
2035 | } | |
2036 | ret = consumer_socket_recv(socket, path_reception_buffer.data, | |
2037 | path_reception_buffer.size); | |
2038 | if (ret < 0) { | |
2039 | ERR("Communication error while receiving path of closed trace chunk"); | |
2040 | ret = -LTTNG_ERR_CLOSE_TRACE_CHUNK_FAIL_CONSUMER; | |
2041 | goto error; | |
2042 | } | |
2043 | if (path_reception_buffer.data[path_reception_buffer.size - 1] != '\0') { | |
2044 | ERR("Invalid path returned by relay daemon: not null-terminated"); | |
2045 | ret = -LTTNG_ERR_INVALID_PROTOCOL; | |
2046 | goto error; | |
2047 | } | |
2048 | if (closed_trace_chunk_path) { | |
2049 | /* | |
2050 | * closed_trace_chunk_path is assumed to have a length >= | |
2051 | * LTTNG_PATH_MAX | |
2052 | */ | |
2053 | memcpy(closed_trace_chunk_path, path_reception_buffer.data, | |
2054 | path_reception_buffer.size); | |
2055 | } | |
a1ae2ea5 | 2056 | error: |
ecd1a12f | 2057 | lttng_dynamic_buffer_reset(&path_reception_buffer); |
a1ae2ea5 JD |
2058 | health_code_update(); |
2059 | return ret; | |
2060 | } | |
3654ed19 | 2061 | |
d2956687 JG |
2062 | /* |
2063 | * Ask the consumer if a trace chunk exists. | |
2064 | * | |
2065 | * Called with the consumer socket lock held. | |
2066 | * Returns 0 on success, or a negative value on error. | |
2067 | */ | |
2068 | int consumer_trace_chunk_exists(struct consumer_socket *socket, | |
2069 | uint64_t relayd_id, uint64_t session_id, | |
2070 | struct lttng_trace_chunk *chunk, | |
2071 | enum consumer_trace_chunk_exists_status *result) | |
3654ed19 JG |
2072 | { |
2073 | int ret; | |
d2956687 | 2074 | enum lttng_trace_chunk_status chunk_status; |
3654ed19 | 2075 | struct lttcomm_consumer_msg msg = { |
d2956687 JG |
2076 | .cmd_type = LTTNG_CONSUMER_TRACE_CHUNK_EXISTS, |
2077 | .u.trace_chunk_exists.session_id = session_id, | |
3654ed19 | 2078 | }; |
d2956687 JG |
2079 | uint64_t chunk_id; |
2080 | const char *consumer_reply_str; | |
3654ed19 JG |
2081 | |
2082 | assert(socket); | |
2083 | ||
d2956687 JG |
2084 | if (relayd_id != -1ULL) { |
2085 | LTTNG_OPTIONAL_SET(&msg.u.trace_chunk_exists.relayd_id, | |
2086 | relayd_id); | |
2087 | } | |
2088 | ||
2089 | chunk_status = lttng_trace_chunk_get_id(chunk, &chunk_id); | |
2090 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
2091 | /* | |
2092 | * Anonymous trace chunks should never be transmitted | |
2093 | * to remote peers (consumerd and relayd). They are used | |
2094 | * internally for backward-compatibility purposes. | |
2095 | */ | |
2096 | ret = -LTTNG_ERR_FATAL; | |
2097 | goto error; | |
2098 | } | |
2099 | msg.u.trace_chunk_exists.chunk_id = chunk_id; | |
2100 | ||
2101 | DBG("Sending consumer trace chunk exists command: relayd_id = %" PRId64 | |
2102 | ", session_id = %" PRIu64 | |
2103 | ", chunk_id = %" PRIu64, relayd_id, session_id, chunk_id); | |
3654ed19 JG |
2104 | |
2105 | health_code_update(); | |
2106 | ret = consumer_send_msg(socket, &msg); | |
d2956687 JG |
2107 | switch (-ret) { |
2108 | case LTTCOMM_CONSUMERD_UNKNOWN_TRACE_CHUNK: | |
2109 | consumer_reply_str = "unknown trace chunk"; | |
2110 | *result = CONSUMER_TRACE_CHUNK_EXISTS_STATUS_UNKNOWN_CHUNK; | |
2111 | break; | |
2112 | case LTTCOMM_CONSUMERD_TRACE_CHUNK_EXISTS_LOCAL: | |
2113 | consumer_reply_str = "trace chunk exists locally"; | |
2114 | *result = CONSUMER_TRACE_CHUNK_EXISTS_STATUS_EXISTS_LOCAL; | |
2115 | break; | |
2116 | case LTTCOMM_CONSUMERD_TRACE_CHUNK_EXISTS_REMOTE: | |
2117 | consumer_reply_str = "trace chunk exists on remote peer"; | |
2118 | *result = CONSUMER_TRACE_CHUNK_EXISTS_STATUS_EXISTS_REMOTE; | |
2119 | break; | |
2120 | default: | |
2121 | ERR("Consumer returned an error from TRACE_CHUNK_EXISTS command"); | |
2122 | ret = -1; | |
3654ed19 JG |
2123 | goto error; |
2124 | } | |
d2956687 JG |
2125 | DBG("Consumer reply to TRACE_CHUNK_EXISTS command: %s", |
2126 | consumer_reply_str); | |
2127 | ret = 0; | |
3654ed19 JG |
2128 | error: |
2129 | health_code_update(); | |
2130 | return ret; | |
2131 | } |