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 | */ | |
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 | ||
102 | assert(socket); | |
9363801e | 103 | assert(socket->fd_ptr); |
52898cb1 DG |
104 | assert(msg); |
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 | ||
146 | assert(socket); | |
9363801e | 147 | assert(socket->fd_ptr); |
52898cb1 DG |
148 | assert(msg); |
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 | ||
189 | assert(sock); | |
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 | ||
222 | assert(sock); | |
223 | assert(stream_count); | |
224 | assert(key); | |
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 | ||
256 | assert(consumer); | |
257 | assert(sock); | |
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 | ||
290 | assert(consumer); | |
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 | ||
322 | assert(data); | |
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 | ||
371 | switch (bits) { | |
372 | case 64: | |
412d7227 | 373 | consumer_fd = uatomic_read(&the_ust_consumerd64_fd); |
7972aab2 DG |
374 | break; |
375 | case 32: | |
412d7227 | 376 | consumer_fd = uatomic_read(&the_ust_consumerd32_fd); |
7972aab2 DG |
377 | break; |
378 | default: | |
379 | assert(0); | |
380 | goto end; | |
381 | } | |
382 | ||
383 | socket = consumer_find_socket(consumer_fd, consumer); | |
384 | if (!socket) { | |
385 | ERR("Consumer socket fd %d not found in consumer obj %p", | |
386 | consumer_fd, consumer); | |
387 | } | |
388 | ||
389 | end: | |
390 | return socket; | |
391 | } | |
392 | ||
173af62f DG |
393 | /* |
394 | * Find a consumer_socket in a consumer_output hashtable. Read side lock must | |
395 | * be acquired before calling this function and across use of the | |
396 | * returned consumer_socket. | |
397 | */ | |
398 | struct consumer_socket *consumer_find_socket(int key, | |
348a81dc | 399 | const struct consumer_output *consumer) |
173af62f DG |
400 | { |
401 | struct lttng_ht_iter iter; | |
402 | struct lttng_ht_node_ulong *node; | |
403 | struct consumer_socket *socket = NULL; | |
404 | ||
405 | /* Negative keys are lookup failures */ | |
a4b92340 | 406 | if (key < 0 || consumer == NULL) { |
173af62f DG |
407 | return NULL; |
408 | } | |
409 | ||
410 | lttng_ht_lookup(consumer->socks, (void *)((unsigned long) key), | |
411 | &iter); | |
412 | node = lttng_ht_iter_get_node_ulong(&iter); | |
413 | if (node != NULL) { | |
414 | socket = caa_container_of(node, struct consumer_socket, node); | |
415 | } | |
416 | ||
417 | return socket; | |
418 | } | |
419 | ||
420 | /* | |
421 | * Allocate a new consumer_socket and return the pointer. | |
422 | */ | |
4ce514c4 | 423 | struct consumer_socket *consumer_allocate_socket(int *fd) |
173af62f DG |
424 | { |
425 | struct consumer_socket *socket = NULL; | |
426 | ||
4ce514c4 DG |
427 | assert(fd); |
428 | ||
173af62f DG |
429 | socket = zmalloc(sizeof(struct consumer_socket)); |
430 | if (socket == NULL) { | |
431 | PERROR("zmalloc consumer socket"); | |
432 | goto error; | |
433 | } | |
434 | ||
9363801e | 435 | socket->fd_ptr = fd; |
4ce514c4 | 436 | lttng_ht_node_init_ulong(&socket->node, *fd); |
173af62f DG |
437 | |
438 | error: | |
439 | return socket; | |
440 | } | |
441 | ||
442 | /* | |
443 | * Add consumer socket to consumer output object. Read side lock must be | |
444 | * acquired before calling this function. | |
445 | */ | |
446 | void consumer_add_socket(struct consumer_socket *sock, | |
447 | struct consumer_output *consumer) | |
448 | { | |
449 | assert(sock); | |
450 | assert(consumer); | |
451 | ||
452 | lttng_ht_add_unique_ulong(consumer->socks, &sock->node); | |
453 | } | |
454 | ||
455 | /* | |
348a81dc | 456 | * Delete consumer socket to consumer output object. Read side lock must be |
173af62f DG |
457 | * acquired before calling this function. |
458 | */ | |
459 | void consumer_del_socket(struct consumer_socket *sock, | |
460 | struct consumer_output *consumer) | |
461 | { | |
462 | int ret; | |
463 | struct lttng_ht_iter iter; | |
464 | ||
465 | assert(sock); | |
466 | assert(consumer); | |
467 | ||
468 | iter.iter.node = &sock->node.node; | |
469 | ret = lttng_ht_del(consumer->socks, &iter); | |
470 | assert(!ret); | |
471 | } | |
472 | ||
473 | /* | |
474 | * RCU destroy call function. | |
475 | */ | |
476 | static void destroy_socket_rcu(struct rcu_head *head) | |
477 | { | |
478 | struct lttng_ht_node_ulong *node = | |
479 | caa_container_of(head, struct lttng_ht_node_ulong, head); | |
480 | struct consumer_socket *socket = | |
481 | caa_container_of(node, struct consumer_socket, node); | |
482 | ||
483 | free(socket); | |
484 | } | |
485 | ||
486 | /* | |
487 | * Destroy and free socket pointer in a call RCU. Read side lock must be | |
488 | * acquired before calling this function. | |
489 | */ | |
490 | void consumer_destroy_socket(struct consumer_socket *sock) | |
491 | { | |
492 | assert(sock); | |
493 | ||
494 | /* | |
495 | * We DO NOT close the file descriptor here since it is global to the | |
2f77fc4b DG |
496 | * session daemon and is closed only if the consumer dies or a custom |
497 | * consumer was registered, | |
173af62f | 498 | */ |
2f77fc4b | 499 | if (sock->registered) { |
9363801e DG |
500 | DBG3("Consumer socket was registered. Closing fd %d", *sock->fd_ptr); |
501 | lttcomm_close_unix_sock(*sock->fd_ptr); | |
2f77fc4b | 502 | } |
173af62f DG |
503 | |
504 | call_rcu(&sock->node.head, destroy_socket_rcu); | |
505 | } | |
506 | ||
00e2e675 DG |
507 | /* |
508 | * Allocate and assign data to a consumer_output object. | |
509 | * | |
510 | * Return pointer to structure. | |
511 | */ | |
512 | struct consumer_output *consumer_create_output(enum consumer_dst_type type) | |
513 | { | |
514 | struct consumer_output *output = NULL; | |
515 | ||
516 | output = zmalloc(sizeof(struct consumer_output)); | |
517 | if (output == NULL) { | |
518 | PERROR("zmalloc consumer_output"); | |
519 | goto error; | |
520 | } | |
521 | ||
522 | /* By default, consumer output is enabled */ | |
523 | output->enabled = 1; | |
524 | output->type = type; | |
d88aee68 | 525 | output->net_seq_index = (uint64_t) -1ULL; |
6addfa37 | 526 | urcu_ref_init(&output->ref); |
173af62f DG |
527 | |
528 | output->socks = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG); | |
00e2e675 DG |
529 | |
530 | error: | |
531 | return output; | |
532 | } | |
533 | ||
af706bb7 DG |
534 | /* |
535 | * Iterate over the consumer output socket hash table and destroy them. The | |
536 | * socket file descriptor are only closed if the consumer output was | |
537 | * registered meaning it's an external consumer. | |
538 | */ | |
539 | void consumer_destroy_output_sockets(struct consumer_output *obj) | |
540 | { | |
541 | struct lttng_ht_iter iter; | |
542 | struct consumer_socket *socket; | |
543 | ||
544 | if (!obj->socks) { | |
545 | return; | |
546 | } | |
547 | ||
548 | rcu_read_lock(); | |
549 | cds_lfht_for_each_entry(obj->socks->ht, &iter.iter, socket, node.node) { | |
550 | consumer_del_socket(socket, obj); | |
551 | consumer_destroy_socket(socket); | |
552 | } | |
553 | rcu_read_unlock(); | |
554 | } | |
555 | ||
00e2e675 DG |
556 | /* |
557 | * Delete the consumer_output object from the list and free the ptr. | |
36b588ed MD |
558 | * |
559 | * Should *NOT* be called with RCU read-side lock held. | |
00e2e675 | 560 | */ |
6addfa37 | 561 | static void consumer_release_output(struct urcu_ref *ref) |
00e2e675 | 562 | { |
6addfa37 MD |
563 | struct consumer_output *obj = |
564 | caa_container_of(ref, struct consumer_output, ref); | |
00e2e675 | 565 | |
af706bb7 | 566 | consumer_destroy_output_sockets(obj); |
2f77fc4b | 567 | |
af706bb7 | 568 | if (obj->socks) { |
2f77fc4b | 569 | /* Finally destroy HT */ |
0b2dc8df | 570 | ht_cleanup_push(obj->socks); |
00e2e675 | 571 | } |
173af62f | 572 | |
00e2e675 DG |
573 | free(obj); |
574 | } | |
575 | ||
6addfa37 MD |
576 | /* |
577 | * Get the consumer_output object. | |
578 | */ | |
579 | void consumer_output_get(struct consumer_output *obj) | |
580 | { | |
581 | urcu_ref_get(&obj->ref); | |
582 | } | |
583 | ||
584 | /* | |
585 | * Put the consumer_output object. | |
586 | * | |
587 | * Should *NOT* be called with RCU read-side lock held. | |
588 | */ | |
589 | void consumer_output_put(struct consumer_output *obj) | |
590 | { | |
591 | if (!obj) { | |
592 | return; | |
593 | } | |
594 | urcu_ref_put(&obj->ref, consumer_release_output); | |
595 | } | |
596 | ||
00e2e675 DG |
597 | /* |
598 | * Copy consumer output and returned the newly allocated copy. | |
36b588ed MD |
599 | * |
600 | * Should *NOT* be called with RCU read-side lock held. | |
00e2e675 | 601 | */ |
b178f53e | 602 | struct consumer_output *consumer_copy_output(struct consumer_output *src) |
00e2e675 | 603 | { |
6dc3064a | 604 | int ret; |
00e2e675 DG |
605 | struct consumer_output *output; |
606 | ||
b178f53e | 607 | assert(src); |
00e2e675 | 608 | |
b178f53e | 609 | output = consumer_create_output(src->type); |
00e2e675 | 610 | if (output == NULL) { |
6addfa37 | 611 | goto end; |
00e2e675 | 612 | } |
b178f53e JG |
613 | output->enabled = src->enabled; |
614 | output->net_seq_index = src->net_seq_index; | |
615 | memcpy(output->domain_subdir, src->domain_subdir, | |
616 | sizeof(output->domain_subdir)); | |
617 | output->snapshot = src->snapshot; | |
618 | output->relay_major_version = src->relay_major_version; | |
619 | output->relay_minor_version = src->relay_minor_version; | |
eacb7b6f | 620 | output->relay_allows_clear = src->relay_allows_clear; |
b178f53e JG |
621 | memcpy(&output->dst, &src->dst, sizeof(output->dst)); |
622 | ret = consumer_copy_sockets(output, src); | |
6dc3064a | 623 | if (ret < 0) { |
6addfa37 | 624 | goto error_put; |
6dc3064a | 625 | } |
6addfa37 | 626 | end: |
6dc3064a DG |
627 | return output; |
628 | ||
6addfa37 MD |
629 | error_put: |
630 | consumer_output_put(output); | |
6dc3064a DG |
631 | return NULL; |
632 | } | |
633 | ||
634 | /* | |
635 | * Copy consumer sockets from src to dst. | |
636 | * | |
637 | * Return 0 on success or else a negative value. | |
638 | */ | |
639 | int consumer_copy_sockets(struct consumer_output *dst, | |
640 | struct consumer_output *src) | |
641 | { | |
642 | int ret = 0; | |
643 | struct lttng_ht_iter iter; | |
644 | struct consumer_socket *socket, *copy_sock; | |
645 | ||
646 | assert(dst); | |
647 | assert(src); | |
648 | ||
b82c5c4d | 649 | rcu_read_lock(); |
6dc3064a DG |
650 | cds_lfht_for_each_entry(src->socks->ht, &iter.iter, socket, node.node) { |
651 | /* Ignore socket that are already there. */ | |
9363801e | 652 | copy_sock = consumer_find_socket(*socket->fd_ptr, dst); |
6dc3064a DG |
653 | if (copy_sock) { |
654 | continue; | |
655 | } | |
656 | ||
173af62f | 657 | /* Create new socket object. */ |
9363801e | 658 | copy_sock = consumer_allocate_socket(socket->fd_ptr); |
173af62f | 659 | if (copy_sock == NULL) { |
b82c5c4d | 660 | rcu_read_unlock(); |
6dc3064a DG |
661 | ret = -ENOMEM; |
662 | goto error; | |
173af62f DG |
663 | } |
664 | ||
09a90bcd | 665 | copy_sock->registered = socket->registered; |
6dc3064a DG |
666 | /* |
667 | * This is valid because this lock is shared accross all consumer | |
668 | * object being the global lock of the consumer data structure of the | |
669 | * session daemon. | |
670 | */ | |
173af62f | 671 | copy_sock->lock = socket->lock; |
6dc3064a | 672 | consumer_add_socket(copy_sock, dst); |
173af62f | 673 | } |
b82c5c4d | 674 | rcu_read_unlock(); |
173af62f | 675 | |
00e2e675 | 676 | error: |
6dc3064a | 677 | return ret; |
00e2e675 DG |
678 | } |
679 | ||
680 | /* | |
b178f53e | 681 | * Set network URI to the consumer output. |
00e2e675 | 682 | * |
ad20f474 DG |
683 | * Return 0 on success. Return 1 if the URI were equal. Else, negative value on |
684 | * error. | |
00e2e675 | 685 | */ |
b178f53e JG |
686 | int consumer_set_network_uri(const struct ltt_session *session, |
687 | struct consumer_output *output, | |
00e2e675 DG |
688 | struct lttng_uri *uri) |
689 | { | |
690 | int ret; | |
00e2e675 DG |
691 | struct lttng_uri *dst_uri = NULL; |
692 | ||
693 | /* Code flow error safety net. */ | |
b178f53e | 694 | assert(output); |
00e2e675 DG |
695 | assert(uri); |
696 | ||
697 | switch (uri->stype) { | |
698 | case LTTNG_STREAM_CONTROL: | |
b178f53e JG |
699 | dst_uri = &output->dst.net.control; |
700 | output->dst.net.control_isset = 1; | |
00e2e675 DG |
701 | if (uri->port == 0) { |
702 | /* Assign default port. */ | |
703 | uri->port = DEFAULT_NETWORK_CONTROL_PORT; | |
a74934ba | 704 | } else { |
b178f53e JG |
705 | if (output->dst.net.data_isset && uri->port == |
706 | output->dst.net.data.port) { | |
a74934ba DG |
707 | ret = -LTTNG_ERR_INVALID; |
708 | goto error; | |
709 | } | |
00e2e675 | 710 | } |
ad20f474 | 711 | DBG3("Consumer control URI set with port %d", uri->port); |
00e2e675 DG |
712 | break; |
713 | case LTTNG_STREAM_DATA: | |
b178f53e JG |
714 | dst_uri = &output->dst.net.data; |
715 | output->dst.net.data_isset = 1; | |
00e2e675 DG |
716 | if (uri->port == 0) { |
717 | /* Assign default port. */ | |
718 | uri->port = DEFAULT_NETWORK_DATA_PORT; | |
a74934ba | 719 | } else { |
b178f53e JG |
720 | if (output->dst.net.control_isset && uri->port == |
721 | output->dst.net.control.port) { | |
a74934ba DG |
722 | ret = -LTTNG_ERR_INVALID; |
723 | goto error; | |
724 | } | |
00e2e675 | 725 | } |
ad20f474 | 726 | DBG3("Consumer data URI set with port %d", uri->port); |
00e2e675 DG |
727 | break; |
728 | default: | |
729 | ERR("Set network uri type unknown %d", uri->stype); | |
a74934ba | 730 | ret = -LTTNG_ERR_INVALID; |
00e2e675 DG |
731 | goto error; |
732 | } | |
733 | ||
734 | ret = uri_compare(dst_uri, uri); | |
735 | if (!ret) { | |
736 | /* Same URI, don't touch it and return success. */ | |
737 | DBG3("URI network compare are the same"); | |
ad20f474 | 738 | goto equal; |
00e2e675 DG |
739 | } |
740 | ||
741 | /* URIs were not equal, replacing it. */ | |
00e2e675 | 742 | memcpy(dst_uri, uri, sizeof(struct lttng_uri)); |
b178f53e JG |
743 | output->type = CONSUMER_DST_NET; |
744 | if (dst_uri->stype != LTTNG_STREAM_CONTROL) { | |
745 | /* Only the control uri needs to contain the path. */ | |
746 | goto end; | |
747 | } | |
00e2e675 | 748 | |
b178f53e JG |
749 | /* |
750 | * If the user has specified a subdir as part of the control | |
751 | * URL, the session's base output directory is: | |
752 | * /RELAYD_OUTPUT_PATH/HOSTNAME/USER_SPECIFIED_DIR | |
753 | * | |
754 | * Hence, the "base_dir" from which all stream files and | |
755 | * session rotation chunks are created takes the form | |
756 | * /HOSTNAME/USER_SPECIFIED_DIR | |
757 | * | |
758 | * If the user has not specified an output directory as part of | |
759 | * the control URL, the base output directory has the form: | |
760 | * /RELAYD_OUTPUT_PATH/HOSTNAME/SESSION_NAME-CREATION_TIME | |
761 | * | |
762 | * Hence, the "base_dir" from which all stream files and | |
763 | * session rotation chunks are created takes the form | |
764 | * /HOSTNAME/SESSION_NAME-CREATION_TIME | |
765 | * | |
766 | * Note that automatically generated session names already | |
767 | * contain the session's creation time. In that case, the | |
768 | * creation time is omitted to prevent it from being duplicated | |
769 | * in the final directory hierarchy. | |
770 | */ | |
771 | if (*uri->subdir) { | |
772 | if (strstr(uri->subdir, "../")) { | |
773 | ERR("Network URI subdirs are not allowed to walk up the path hierarchy"); | |
774 | ret = -LTTNG_ERR_INVALID; | |
00e2e675 DG |
775 | goto error; |
776 | } | |
b178f53e JG |
777 | ret = snprintf(output->dst.net.base_dir, |
778 | sizeof(output->dst.net.base_dir), | |
779 | "/%s/%s/", session->hostname, uri->subdir); | |
780 | } else { | |
781 | if (session->has_auto_generated_name) { | |
782 | ret = snprintf(output->dst.net.base_dir, | |
783 | sizeof(output->dst.net.base_dir), | |
784 | "/%s/%s/", session->hostname, | |
785 | session->name); | |
786 | } else { | |
787 | char session_creation_datetime[16]; | |
788 | size_t strftime_ret; | |
789 | struct tm *timeinfo; | |
00e2e675 | 790 | |
b178f53e JG |
791 | timeinfo = localtime(&session->creation_time); |
792 | if (!timeinfo) { | |
793 | ret = -LTTNG_ERR_FATAL; | |
794 | goto error; | |
795 | } | |
796 | strftime_ret = strftime(session_creation_datetime, | |
797 | sizeof(session_creation_datetime), | |
798 | "%Y%m%d-%H%M%S", timeinfo); | |
799 | if (strftime_ret == 0) { | |
800 | ERR("Failed to format session creation timestamp while setting network URI"); | |
801 | ret = -LTTNG_ERR_FATAL; | |
802 | goto error; | |
803 | } | |
804 | ret = snprintf(output->dst.net.base_dir, | |
805 | sizeof(output->dst.net.base_dir), | |
806 | "/%s/%s-%s/", session->hostname, | |
807 | session->name, | |
808 | session_creation_datetime); | |
bfc6eff0 | 809 | } |
00e2e675 | 810 | } |
b178f53e JG |
811 | if (ret >= sizeof(output->dst.net.base_dir)) { |
812 | ret = -LTTNG_ERR_INVALID; | |
813 | ERR("Truncation occurred while setting network output base directory"); | |
814 | goto error; | |
815 | } else if (ret == -1) { | |
816 | ret = -LTTNG_ERR_INVALID; | |
817 | PERROR("Error occurred while setting network output base directory"); | |
818 | goto error; | |
819 | } | |
820 | ||
821 | DBG3("Consumer set network uri base_dir path %s", | |
822 | output->dst.net.base_dir); | |
00e2e675 | 823 | |
b178f53e | 824 | end: |
00e2e675 | 825 | return 0; |
ad20f474 DG |
826 | equal: |
827 | return 1; | |
00e2e675 | 828 | error: |
a74934ba | 829 | return ret; |
00e2e675 DG |
830 | } |
831 | ||
832 | /* | |
833 | * Send file descriptor to consumer via sock. | |
9a318688 JG |
834 | * |
835 | * The consumer socket lock must be held by the caller. | |
00e2e675 | 836 | */ |
ac2f30af JG |
837 | int consumer_send_fds(struct consumer_socket *sock, const int *fds, |
838 | size_t nb_fd) | |
00e2e675 DG |
839 | { |
840 | int ret; | |
841 | ||
842 | assert(fds); | |
f50f23d9 | 843 | assert(sock); |
00e2e675 | 844 | assert(nb_fd > 0); |
05dac598 | 845 | assert(pthread_mutex_trylock(sock->lock) == EBUSY); |
00e2e675 | 846 | |
9363801e | 847 | ret = lttcomm_send_fds_unix_sock(*sock->fd_ptr, fds, nb_fd); |
00e2e675 | 848 | if (ret < 0) { |
3448e266 | 849 | /* The above call will print a PERROR on error. */ |
9363801e | 850 | DBG("Error when sending consumer fds on sock %d", *sock->fd_ptr); |
00e2e675 DG |
851 | goto error; |
852 | } | |
853 | ||
f50f23d9 | 854 | ret = consumer_recv_status_reply(sock); |
00e2e675 DG |
855 | error: |
856 | return ret; | |
857 | } | |
858 | ||
ffe60014 DG |
859 | /* |
860 | * Consumer send communication message structure to consumer. | |
9a318688 JG |
861 | * |
862 | * The consumer socket lock must be held by the caller. | |
ffe60014 DG |
863 | */ |
864 | int consumer_send_msg(struct consumer_socket *sock, | |
04ed9e10 | 865 | const struct lttcomm_consumer_msg *msg) |
ffe60014 DG |
866 | { |
867 | int ret; | |
868 | ||
869 | assert(msg); | |
870 | assert(sock); | |
211b734b | 871 | assert(pthread_mutex_trylock(sock->lock) == EBUSY); |
ffe60014 | 872 | |
52898cb1 | 873 | ret = consumer_socket_send(sock, msg, sizeof(struct lttcomm_consumer_msg)); |
ffe60014 | 874 | if (ret < 0) { |
ffe60014 DG |
875 | goto error; |
876 | } | |
877 | ||
878 | ret = consumer_recv_status_reply(sock); | |
879 | ||
880 | error: | |
881 | return ret; | |
882 | } | |
883 | ||
00e2e675 DG |
884 | /* |
885 | * Consumer send channel communication message structure to consumer. | |
9a318688 JG |
886 | * |
887 | * The consumer socket lock must be held by the caller. | |
00e2e675 | 888 | */ |
f50f23d9 DG |
889 | int consumer_send_channel(struct consumer_socket *sock, |
890 | struct lttcomm_consumer_msg *msg) | |
00e2e675 DG |
891 | { |
892 | int ret; | |
893 | ||
894 | assert(msg); | |
f50f23d9 | 895 | assert(sock); |
00e2e675 | 896 | |
52898cb1 | 897 | ret = consumer_send_msg(sock, msg); |
00e2e675 | 898 | if (ret < 0) { |
00e2e675 DG |
899 | goto error; |
900 | } | |
901 | ||
902 | error: | |
903 | return ret; | |
904 | } | |
905 | ||
ffe60014 DG |
906 | /* |
907 | * Populate the given consumer msg structure with the ask_channel command | |
908 | * information. | |
909 | */ | |
910 | void consumer_init_ask_channel_comm_msg(struct lttcomm_consumer_msg *msg, | |
911 | uint64_t subbuf_size, | |
912 | uint64_t num_subbuf, | |
913 | int overwrite, | |
914 | unsigned int switch_timer_interval, | |
915 | unsigned int read_timer_interval, | |
ecc48a90 | 916 | unsigned int live_timer_interval, |
a2814ea7 | 917 | bool is_in_live_session, |
e9404c27 | 918 | unsigned int monitor_timer_interval, |
ffe60014 DG |
919 | int output, |
920 | int type, | |
921 | uint64_t session_id, | |
922 | const char *pathname, | |
923 | const char *name, | |
d88aee68 DG |
924 | uint64_t relayd_id, |
925 | uint64_t key, | |
7972aab2 | 926 | unsigned char *uuid, |
1624d5b7 JD |
927 | uint32_t chan_id, |
928 | uint64_t tracefile_size, | |
2bba9e53 | 929 | uint64_t tracefile_count, |
1950109e | 930 | uint64_t session_id_per_pid, |
567eb353 | 931 | unsigned int monitor, |
d7ba1388 | 932 | uint32_t ust_app_uid, |
491d1539 | 933 | int64_t blocking_timeout, |
3d071855 | 934 | const char *root_shm_path, |
e098433c | 935 | const char *shm_path, |
1b0bebcb JG |
936 | struct lttng_trace_chunk *trace_chunk, |
937 | const struct lttng_credentials *buffer_credentials) | |
ffe60014 DG |
938 | { |
939 | assert(msg); | |
940 | ||
26c468bb | 941 | /* Zeroed structure */ |
ffe60014 | 942 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); |
d2956687 JG |
943 | msg->u.ask_channel.buffer_credentials.uid = UINT32_MAX; |
944 | msg->u.ask_channel.buffer_credentials.gid = UINT32_MAX; | |
945 | ||
26c468bb | 946 | if (trace_chunk) { |
d2956687 JG |
947 | uint64_t chunk_id; |
948 | enum lttng_trace_chunk_status chunk_status; | |
d2956687 JG |
949 | |
950 | chunk_status = lttng_trace_chunk_get_id(trace_chunk, &chunk_id); | |
951 | assert(chunk_status == LTTNG_TRACE_CHUNK_STATUS_OK); | |
952 | LTTNG_OPTIONAL_SET(&msg->u.ask_channel.chunk_id, chunk_id); | |
26c468bb | 953 | } |
ff588497 JR |
954 | msg->u.ask_channel.buffer_credentials.uid = |
955 | lttng_credentials_get_uid(buffer_credentials); | |
956 | msg->u.ask_channel.buffer_credentials.gid = | |
957 | lttng_credentials_get_gid(buffer_credentials); | |
ffe60014 DG |
958 | |
959 | msg->cmd_type = LTTNG_CONSUMER_ASK_CHANNEL_CREATION; | |
960 | msg->u.ask_channel.subbuf_size = subbuf_size; | |
961 | msg->u.ask_channel.num_subbuf = num_subbuf ; | |
962 | msg->u.ask_channel.overwrite = overwrite; | |
963 | msg->u.ask_channel.switch_timer_interval = switch_timer_interval; | |
964 | msg->u.ask_channel.read_timer_interval = read_timer_interval; | |
ecc48a90 | 965 | msg->u.ask_channel.live_timer_interval = live_timer_interval; |
a2814ea7 | 966 | msg->u.ask_channel.is_live = is_in_live_session; |
e9404c27 | 967 | msg->u.ask_channel.monitor_timer_interval = monitor_timer_interval; |
ffe60014 DG |
968 | msg->u.ask_channel.output = output; |
969 | msg->u.ask_channel.type = type; | |
970 | msg->u.ask_channel.session_id = session_id; | |
1950109e | 971 | msg->u.ask_channel.session_id_per_pid = session_id_per_pid; |
ffe60014 DG |
972 | msg->u.ask_channel.relayd_id = relayd_id; |
973 | msg->u.ask_channel.key = key; | |
7972aab2 | 974 | msg->u.ask_channel.chan_id = chan_id; |
1624d5b7 JD |
975 | msg->u.ask_channel.tracefile_size = tracefile_size; |
976 | msg->u.ask_channel.tracefile_count = tracefile_count; | |
2bba9e53 | 977 | msg->u.ask_channel.monitor = monitor; |
567eb353 | 978 | msg->u.ask_channel.ust_app_uid = ust_app_uid; |
491d1539 | 979 | msg->u.ask_channel.blocking_timeout = blocking_timeout; |
ffe60014 DG |
980 | |
981 | memcpy(msg->u.ask_channel.uuid, uuid, sizeof(msg->u.ask_channel.uuid)); | |
982 | ||
10a50311 JD |
983 | if (pathname) { |
984 | strncpy(msg->u.ask_channel.pathname, pathname, | |
985 | sizeof(msg->u.ask_channel.pathname)); | |
986 | msg->u.ask_channel.pathname[sizeof(msg->u.ask_channel.pathname)-1] = '\0'; | |
987 | } | |
ffe60014 DG |
988 | |
989 | strncpy(msg->u.ask_channel.name, name, sizeof(msg->u.ask_channel.name)); | |
990 | msg->u.ask_channel.name[sizeof(msg->u.ask_channel.name) - 1] = '\0'; | |
d7ba1388 | 991 | |
3d071855 MD |
992 | if (root_shm_path) { |
993 | strncpy(msg->u.ask_channel.root_shm_path, root_shm_path, | |
994 | sizeof(msg->u.ask_channel.root_shm_path)); | |
995 | msg->u.ask_channel.root_shm_path[sizeof(msg->u.ask_channel.root_shm_path) - 1] = '\0'; | |
996 | } | |
d7ba1388 MD |
997 | if (shm_path) { |
998 | strncpy(msg->u.ask_channel.shm_path, shm_path, | |
999 | sizeof(msg->u.ask_channel.shm_path)); | |
1000 | msg->u.ask_channel.shm_path[sizeof(msg->u.ask_channel.shm_path) - 1] = '\0'; | |
1001 | } | |
ffe60014 DG |
1002 | } |
1003 | ||
00e2e675 DG |
1004 | /* |
1005 | * Init channel communication message structure. | |
1006 | */ | |
638e7b4e | 1007 | void consumer_init_add_channel_comm_msg(struct lttcomm_consumer_msg *msg, |
d88aee68 | 1008 | uint64_t channel_key, |
ffe60014 DG |
1009 | uint64_t session_id, |
1010 | const char *pathname, | |
1011 | uid_t uid, | |
1012 | gid_t gid, | |
d88aee68 | 1013 | uint64_t relayd_id, |
c30aaa51 | 1014 | const char *name, |
ffe60014 DG |
1015 | unsigned int nb_init_streams, |
1016 | enum lttng_event_output output, | |
1624d5b7 JD |
1017 | int type, |
1018 | uint64_t tracefile_size, | |
2bba9e53 | 1019 | uint64_t tracefile_count, |
ecc48a90 | 1020 | unsigned int monitor, |
e9404c27 | 1021 | unsigned int live_timer_interval, |
a2814ea7 | 1022 | bool is_in_live_session, |
d2956687 JG |
1023 | unsigned int monitor_timer_interval, |
1024 | struct lttng_trace_chunk *trace_chunk) | |
00e2e675 DG |
1025 | { |
1026 | assert(msg); | |
1027 | ||
00e2e675 DG |
1028 | /* Zeroed structure */ |
1029 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
1030 | ||
26c468bb | 1031 | if (trace_chunk) { |
d2956687 JG |
1032 | uint64_t chunk_id; |
1033 | enum lttng_trace_chunk_status chunk_status; | |
1034 | ||
1035 | chunk_status = lttng_trace_chunk_get_id(trace_chunk, &chunk_id); | |
1036 | assert(chunk_status == LTTNG_TRACE_CHUNK_STATUS_OK); | |
1037 | LTTNG_OPTIONAL_SET(&msg->u.channel.chunk_id, chunk_id); | |
26c468bb | 1038 | } |
d2956687 | 1039 | |
00e2e675 | 1040 | /* Send channel */ |
638e7b4e | 1041 | msg->cmd_type = LTTNG_CONSUMER_ADD_CHANNEL; |
00e2e675 | 1042 | msg->u.channel.channel_key = channel_key; |
ffe60014 | 1043 | msg->u.channel.session_id = session_id; |
ffe60014 | 1044 | msg->u.channel.relayd_id = relayd_id; |
c30aaa51 | 1045 | msg->u.channel.nb_init_streams = nb_init_streams; |
ffe60014 DG |
1046 | msg->u.channel.output = output; |
1047 | msg->u.channel.type = type; | |
1624d5b7 JD |
1048 | msg->u.channel.tracefile_size = tracefile_size; |
1049 | msg->u.channel.tracefile_count = tracefile_count; | |
2bba9e53 | 1050 | msg->u.channel.monitor = monitor; |
ecc48a90 | 1051 | msg->u.channel.live_timer_interval = live_timer_interval; |
a2814ea7 | 1052 | msg->u.channel.is_live = is_in_live_session; |
e9404c27 | 1053 | msg->u.channel.monitor_timer_interval = monitor_timer_interval; |
ffe60014 DG |
1054 | |
1055 | strncpy(msg->u.channel.pathname, pathname, | |
1056 | sizeof(msg->u.channel.pathname)); | |
1057 | msg->u.channel.pathname[sizeof(msg->u.channel.pathname) - 1] = '\0'; | |
1058 | ||
1059 | strncpy(msg->u.channel.name, name, sizeof(msg->u.channel.name)); | |
1060 | msg->u.channel.name[sizeof(msg->u.channel.name) - 1] = '\0'; | |
00e2e675 DG |
1061 | } |
1062 | ||
1063 | /* | |
1064 | * Init stream communication message structure. | |
1065 | */ | |
e098433c | 1066 | void consumer_init_add_stream_comm_msg(struct lttcomm_consumer_msg *msg, |
d88aee68 DG |
1067 | uint64_t channel_key, |
1068 | uint64_t stream_key, | |
d2956687 | 1069 | int32_t cpu) |
00e2e675 DG |
1070 | { |
1071 | assert(msg); | |
1072 | ||
1073 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
1074 | ||
e098433c | 1075 | msg->cmd_type = LTTNG_CONSUMER_ADD_STREAM; |
00e2e675 DG |
1076 | msg->u.stream.channel_key = channel_key; |
1077 | msg->u.stream.stream_key = stream_key; | |
ffe60014 | 1078 | msg->u.stream.cpu = cpu; |
00e2e675 DG |
1079 | } |
1080 | ||
a4baae1b JD |
1081 | void consumer_init_streams_sent_comm_msg(struct lttcomm_consumer_msg *msg, |
1082 | enum lttng_consumer_command cmd, | |
1083 | uint64_t channel_key, uint64_t net_seq_idx) | |
1084 | { | |
1085 | assert(msg); | |
1086 | ||
1087 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
1088 | ||
1089 | msg->cmd_type = cmd; | |
1090 | msg->u.sent_streams.channel_key = channel_key; | |
1091 | msg->u.sent_streams.net_seq_idx = net_seq_idx; | |
1092 | } | |
1093 | ||
00e2e675 DG |
1094 | /* |
1095 | * Send stream communication structure to the consumer. | |
1096 | */ | |
f50f23d9 DG |
1097 | int consumer_send_stream(struct consumer_socket *sock, |
1098 | struct consumer_output *dst, struct lttcomm_consumer_msg *msg, | |
ac2f30af | 1099 | const int *fds, size_t nb_fd) |
00e2e675 DG |
1100 | { |
1101 | int ret; | |
1102 | ||
1103 | assert(msg); | |
1104 | assert(dst); | |
f50f23d9 | 1105 | assert(sock); |
ffe60014 | 1106 | assert(fds); |
00e2e675 | 1107 | |
52898cb1 | 1108 | ret = consumer_send_msg(sock, msg); |
f50f23d9 DG |
1109 | if (ret < 0) { |
1110 | goto error; | |
1111 | } | |
1112 | ||
00e2e675 DG |
1113 | ret = consumer_send_fds(sock, fds, nb_fd); |
1114 | if (ret < 0) { | |
1115 | goto error; | |
1116 | } | |
1117 | ||
1118 | error: | |
1119 | return ret; | |
1120 | } | |
37278a1e DG |
1121 | |
1122 | /* | |
1123 | * Send relayd socket to consumer associated with a session name. | |
1124 | * | |
43fade62 JG |
1125 | * The consumer socket lock must be held by the caller. |
1126 | * | |
37278a1e DG |
1127 | * On success return positive value. On error, negative value. |
1128 | */ | |
f50f23d9 | 1129 | int consumer_send_relayd_socket(struct consumer_socket *consumer_sock, |
6151a90f | 1130 | struct lttcomm_relayd_sock *rsock, struct consumer_output *consumer, |
d3e2ba59 | 1131 | enum lttng_stream_type type, uint64_t session_id, |
fb9a95c4 | 1132 | const char *session_name, const char *hostname, |
6fa5fe7c | 1133 | const char *base_path, int session_live_timer, |
46ef2188 MD |
1134 | const uint64_t *current_chunk_id, time_t session_creation_time, |
1135 | bool session_name_contains_creation_time) | |
37278a1e DG |
1136 | { |
1137 | int ret; | |
1138 | struct lttcomm_consumer_msg msg; | |
1139 | ||
1140 | /* Code flow error. Safety net. */ | |
6151a90f | 1141 | assert(rsock); |
37278a1e | 1142 | assert(consumer); |
f50f23d9 | 1143 | assert(consumer_sock); |
37278a1e | 1144 | |
53efb85a | 1145 | memset(&msg, 0, sizeof(msg)); |
37278a1e DG |
1146 | /* Bail out if consumer is disabled */ |
1147 | if (!consumer->enabled) { | |
f73fabfd | 1148 | ret = LTTNG_OK; |
37278a1e DG |
1149 | goto error; |
1150 | } | |
1151 | ||
d3e2ba59 | 1152 | if (type == LTTNG_STREAM_CONTROL) { |
ecd1a12f | 1153 | char output_path[LTTNG_PATH_MAX] = {}; |
07aa2e42 | 1154 | uint64_t relayd_session_id; |
ecd1a12f | 1155 | |
412d7227 | 1156 | ret = relayd_create_session(rsock, &relayd_session_id, |
6fa5fe7c | 1157 | session_name, hostname, base_path, |
412d7227 SM |
1158 | session_live_timer, consumer->snapshot, |
1159 | session_id, the_sessiond_uuid, current_chunk_id, | |
46ef2188 | 1160 | session_creation_time, |
ecd1a12f MD |
1161 | session_name_contains_creation_time, |
1162 | output_path); | |
d3e2ba59 JD |
1163 | if (ret < 0) { |
1164 | /* Close the control socket. */ | |
1165 | (void) relayd_close(rsock); | |
1166 | goto error; | |
1167 | } | |
07aa2e42 | 1168 | msg.u.relayd_sock.relayd_session_id = relayd_session_id; |
ecd1a12f MD |
1169 | DBG("Created session on relay, output path reply: %s", |
1170 | output_path); | |
d3e2ba59 JD |
1171 | } |
1172 | ||
37278a1e DG |
1173 | msg.cmd_type = LTTNG_CONSUMER_ADD_RELAYD_SOCKET; |
1174 | /* | |
1175 | * Assign network consumer output index using the temporary consumer since | |
1176 | * this call should only be made from within a set_consumer_uri() function | |
1177 | * call in the session daemon. | |
1178 | */ | |
1179 | msg.u.relayd_sock.net_index = consumer->net_seq_index; | |
1180 | msg.u.relayd_sock.type = type; | |
46e6455f | 1181 | msg.u.relayd_sock.session_id = session_id; |
6151a90f | 1182 | memcpy(&msg.u.relayd_sock.sock, rsock, sizeof(msg.u.relayd_sock.sock)); |
37278a1e | 1183 | |
9363801e | 1184 | DBG3("Sending relayd sock info to consumer on %d", *consumer_sock->fd_ptr); |
52898cb1 | 1185 | ret = consumer_send_msg(consumer_sock, &msg); |
f50f23d9 DG |
1186 | if (ret < 0) { |
1187 | goto error; | |
1188 | } | |
1189 | ||
37278a1e | 1190 | DBG3("Sending relayd socket file descriptor to consumer"); |
f712d514 | 1191 | ret = consumer_send_fds(consumer_sock, ALIGNED_CONST_PTR(rsock->sock.fd), 1); |
37278a1e DG |
1192 | if (ret < 0) { |
1193 | goto error; | |
1194 | } | |
1195 | ||
1196 | DBG2("Consumer relayd socket sent"); | |
1197 | ||
1198 | error: | |
1199 | return ret; | |
1200 | } | |
173af62f | 1201 | |
62c43103 JD |
1202 | static |
1203 | int consumer_send_pipe(struct consumer_socket *consumer_sock, | |
1204 | enum lttng_consumer_command cmd, int pipe) | |
e9404c27 JG |
1205 | { |
1206 | int ret; | |
1207 | struct lttcomm_consumer_msg msg; | |
62c43103 JD |
1208 | const char *pipe_name; |
1209 | const char *command_name; | |
1210 | ||
1211 | switch (cmd) { | |
1212 | case LTTNG_CONSUMER_SET_CHANNEL_MONITOR_PIPE: | |
1213 | pipe_name = "channel monitor"; | |
1214 | command_name = "SET_CHANNEL_MONITOR_PIPE"; | |
1215 | break; | |
62c43103 JD |
1216 | default: |
1217 | ERR("Unexpected command received in %s (cmd = %d)", __func__, | |
1218 | (int) cmd); | |
1219 | abort(); | |
1220 | } | |
e9404c27 JG |
1221 | |
1222 | /* Code flow error. Safety net. */ | |
1223 | ||
1224 | memset(&msg, 0, sizeof(msg)); | |
62c43103 | 1225 | msg.cmd_type = cmd; |
e9404c27 | 1226 | |
3e4dc117 | 1227 | pthread_mutex_lock(consumer_sock->lock); |
62c43103 | 1228 | DBG3("Sending %s command to consumer", command_name); |
e9404c27 JG |
1229 | ret = consumer_send_msg(consumer_sock, &msg); |
1230 | if (ret < 0) { | |
1231 | goto error; | |
1232 | } | |
1233 | ||
62c43103 JD |
1234 | DBG3("Sending %s pipe %d to consumer on socket %d", |
1235 | pipe_name, | |
e9404c27 JG |
1236 | pipe, *consumer_sock->fd_ptr); |
1237 | ret = consumer_send_fds(consumer_sock, &pipe, 1); | |
1238 | if (ret < 0) { | |
1239 | goto error; | |
1240 | } | |
1241 | ||
62c43103 | 1242 | DBG2("%s pipe successfully sent", pipe_name); |
e9404c27 | 1243 | error: |
3e4dc117 | 1244 | pthread_mutex_unlock(consumer_sock->lock); |
e9404c27 JG |
1245 | return ret; |
1246 | } | |
1247 | ||
62c43103 JD |
1248 | int consumer_send_channel_monitor_pipe(struct consumer_socket *consumer_sock, |
1249 | int pipe) | |
1250 | { | |
1251 | return consumer_send_pipe(consumer_sock, | |
1252 | LTTNG_CONSUMER_SET_CHANNEL_MONITOR_PIPE, pipe); | |
1253 | } | |
1254 | ||
806e2684 | 1255 | /* |
5e280d77 MD |
1256 | * Ask the consumer if the data is pending for the specific session id. |
1257 | * Returns 1 if data is pending, 0 otherwise, or < 0 on error. | |
806e2684 | 1258 | */ |
d88aee68 | 1259 | int consumer_is_data_pending(uint64_t session_id, |
806e2684 DG |
1260 | struct consumer_output *consumer) |
1261 | { | |
1262 | int ret; | |
6d805429 | 1263 | int32_t ret_code = 0; /* Default is that the data is NOT pending */ |
806e2684 DG |
1264 | struct consumer_socket *socket; |
1265 | struct lttng_ht_iter iter; | |
1266 | struct lttcomm_consumer_msg msg; | |
1267 | ||
1268 | assert(consumer); | |
1269 | ||
53efb85a | 1270 | DBG3("Consumer data pending for id %" PRIu64, session_id); |
806e2684 | 1271 | |
53efb85a MD |
1272 | memset(&msg, 0, sizeof(msg)); |
1273 | msg.cmd_type = LTTNG_CONSUMER_DATA_PENDING; | |
d88aee68 | 1274 | msg.u.data_pending.session_id = session_id; |
806e2684 | 1275 | |
c8f59ee5 | 1276 | /* Send command for each consumer */ |
b82c5c4d | 1277 | rcu_read_lock(); |
806e2684 DG |
1278 | cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket, |
1279 | node.node) { | |
806e2684 | 1280 | pthread_mutex_lock(socket->lock); |
52898cb1 | 1281 | ret = consumer_socket_send(socket, &msg, sizeof(msg)); |
806e2684 | 1282 | if (ret < 0) { |
806e2684 | 1283 | pthread_mutex_unlock(socket->lock); |
b82c5c4d | 1284 | goto error_unlock; |
806e2684 DG |
1285 | } |
1286 | ||
f50f23d9 DG |
1287 | /* |
1288 | * No need for a recv reply status because the answer to the command is | |
1289 | * the reply status message. | |
1290 | */ | |
1291 | ||
52898cb1 DG |
1292 | ret = consumer_socket_recv(socket, &ret_code, sizeof(ret_code)); |
1293 | if (ret < 0) { | |
806e2684 | 1294 | pthread_mutex_unlock(socket->lock); |
b82c5c4d | 1295 | goto error_unlock; |
806e2684 | 1296 | } |
806e2684 DG |
1297 | pthread_mutex_unlock(socket->lock); |
1298 | ||
6d805429 | 1299 | if (ret_code == 1) { |
806e2684 DG |
1300 | break; |
1301 | } | |
1302 | } | |
b82c5c4d | 1303 | rcu_read_unlock(); |
806e2684 | 1304 | |
d88aee68 DG |
1305 | DBG("Consumer data is %s pending for session id %" PRIu64, |
1306 | ret_code == 1 ? "" : "NOT", session_id); | |
806e2684 DG |
1307 | return ret_code; |
1308 | ||
b82c5c4d DG |
1309 | error_unlock: |
1310 | rcu_read_unlock(); | |
806e2684 DG |
1311 | return -1; |
1312 | } | |
7972aab2 DG |
1313 | |
1314 | /* | |
1315 | * Send a flush command to consumer using the given channel key. | |
1316 | * | |
1317 | * Return 0 on success else a negative value. | |
1318 | */ | |
1319 | int consumer_flush_channel(struct consumer_socket *socket, uint64_t key) | |
1320 | { | |
1321 | int ret; | |
1322 | struct lttcomm_consumer_msg msg; | |
1323 | ||
1324 | assert(socket); | |
7972aab2 DG |
1325 | |
1326 | DBG2("Consumer flush channel key %" PRIu64, key); | |
1327 | ||
53efb85a | 1328 | memset(&msg, 0, sizeof(msg)); |
7972aab2 DG |
1329 | msg.cmd_type = LTTNG_CONSUMER_FLUSH_CHANNEL; |
1330 | msg.u.flush_channel.key = key; | |
1331 | ||
1332 | pthread_mutex_lock(socket->lock); | |
1333 | health_code_update(); | |
1334 | ||
1335 | ret = consumer_send_msg(socket, &msg); | |
1336 | if (ret < 0) { | |
1337 | goto end; | |
1338 | } | |
1339 | ||
1340 | end: | |
1341 | health_code_update(); | |
1342 | pthread_mutex_unlock(socket->lock); | |
1343 | return ret; | |
1344 | } | |
1345 | ||
0dd01979 MD |
1346 | /* |
1347 | * Send a clear quiescent command to consumer using the given channel key. | |
1348 | * | |
1349 | * Return 0 on success else a negative value. | |
1350 | */ | |
1351 | int consumer_clear_quiescent_channel(struct consumer_socket *socket, uint64_t key) | |
1352 | { | |
1353 | int ret; | |
1354 | struct lttcomm_consumer_msg msg; | |
1355 | ||
1356 | assert(socket); | |
1357 | ||
1358 | DBG2("Consumer clear quiescent channel key %" PRIu64, key); | |
1359 | ||
1360 | memset(&msg, 0, sizeof(msg)); | |
1361 | msg.cmd_type = LTTNG_CONSUMER_CLEAR_QUIESCENT_CHANNEL; | |
1362 | msg.u.clear_quiescent_channel.key = key; | |
1363 | ||
1364 | pthread_mutex_lock(socket->lock); | |
1365 | health_code_update(); | |
1366 | ||
1367 | ret = consumer_send_msg(socket, &msg); | |
1368 | if (ret < 0) { | |
1369 | goto end; | |
1370 | } | |
1371 | ||
1372 | end: | |
1373 | health_code_update(); | |
1374 | pthread_mutex_unlock(socket->lock); | |
1375 | return ret; | |
1376 | } | |
1377 | ||
7972aab2 | 1378 | /* |
dc2bbdae MD |
1379 | * Send a close metadata command to consumer using the given channel key. |
1380 | * Called with registry lock held. | |
7972aab2 DG |
1381 | * |
1382 | * Return 0 on success else a negative value. | |
1383 | */ | |
1384 | int consumer_close_metadata(struct consumer_socket *socket, | |
1385 | uint64_t metadata_key) | |
1386 | { | |
1387 | int ret; | |
1388 | struct lttcomm_consumer_msg msg; | |
1389 | ||
1390 | assert(socket); | |
7972aab2 DG |
1391 | |
1392 | DBG2("Consumer close metadata channel key %" PRIu64, metadata_key); | |
1393 | ||
53efb85a | 1394 | memset(&msg, 0, sizeof(msg)); |
7972aab2 DG |
1395 | msg.cmd_type = LTTNG_CONSUMER_CLOSE_METADATA; |
1396 | msg.u.close_metadata.key = metadata_key; | |
1397 | ||
1398 | pthread_mutex_lock(socket->lock); | |
1399 | health_code_update(); | |
1400 | ||
1401 | ret = consumer_send_msg(socket, &msg); | |
1402 | if (ret < 0) { | |
1403 | goto end; | |
1404 | } | |
1405 | ||
1406 | end: | |
1407 | health_code_update(); | |
1408 | pthread_mutex_unlock(socket->lock); | |
1409 | return ret; | |
1410 | } | |
1411 | ||
1412 | /* | |
1413 | * Send a setup metdata command to consumer using the given channel key. | |
1414 | * | |
1415 | * Return 0 on success else a negative value. | |
1416 | */ | |
1417 | int consumer_setup_metadata(struct consumer_socket *socket, | |
1418 | uint64_t metadata_key) | |
1419 | { | |
1420 | int ret; | |
1421 | struct lttcomm_consumer_msg msg; | |
1422 | ||
1423 | assert(socket); | |
7972aab2 DG |
1424 | |
1425 | DBG2("Consumer setup metadata channel key %" PRIu64, metadata_key); | |
1426 | ||
53efb85a | 1427 | memset(&msg, 0, sizeof(msg)); |
7972aab2 DG |
1428 | msg.cmd_type = LTTNG_CONSUMER_SETUP_METADATA; |
1429 | msg.u.setup_metadata.key = metadata_key; | |
1430 | ||
1431 | pthread_mutex_lock(socket->lock); | |
1432 | health_code_update(); | |
1433 | ||
1434 | ret = consumer_send_msg(socket, &msg); | |
1435 | if (ret < 0) { | |
1436 | goto end; | |
1437 | } | |
1438 | ||
1439 | end: | |
1440 | health_code_update(); | |
1441 | pthread_mutex_unlock(socket->lock); | |
1442 | return ret; | |
1443 | } | |
1444 | ||
1445 | /* | |
dc2bbdae MD |
1446 | * Send metadata string to consumer. |
1447 | * RCU read-side lock must be held to guarantee existence of socket. | |
7972aab2 DG |
1448 | * |
1449 | * Return 0 on success else a negative value. | |
1450 | */ | |
1451 | int consumer_push_metadata(struct consumer_socket *socket, | |
1452 | uint64_t metadata_key, char *metadata_str, size_t len, | |
93ec662e | 1453 | size_t target_offset, uint64_t version) |
7972aab2 DG |
1454 | { |
1455 | int ret; | |
1456 | struct lttcomm_consumer_msg msg; | |
1457 | ||
1458 | assert(socket); | |
7972aab2 | 1459 | |
9363801e | 1460 | DBG2("Consumer push metadata to consumer socket %d", *socket->fd_ptr); |
7972aab2 | 1461 | |
dc2bbdae MD |
1462 | pthread_mutex_lock(socket->lock); |
1463 | ||
53efb85a | 1464 | memset(&msg, 0, sizeof(msg)); |
7972aab2 DG |
1465 | msg.cmd_type = LTTNG_CONSUMER_PUSH_METADATA; |
1466 | msg.u.push_metadata.key = metadata_key; | |
1467 | msg.u.push_metadata.target_offset = target_offset; | |
1468 | msg.u.push_metadata.len = len; | |
93ec662e | 1469 | msg.u.push_metadata.version = version; |
7972aab2 | 1470 | |
7972aab2 DG |
1471 | health_code_update(); |
1472 | ret = consumer_send_msg(socket, &msg); | |
331744e3 | 1473 | if (ret < 0 || len == 0) { |
7972aab2 DG |
1474 | goto end; |
1475 | } | |
1476 | ||
9363801e DG |
1477 | DBG3("Consumer pushing metadata on sock %d of len %zu", *socket->fd_ptr, |
1478 | len); | |
7972aab2 | 1479 | |
52898cb1 | 1480 | ret = consumer_socket_send(socket, metadata_str, len); |
7972aab2 DG |
1481 | if (ret < 0) { |
1482 | goto end; | |
1483 | } | |
1484 | ||
1485 | health_code_update(); | |
1486 | ret = consumer_recv_status_reply(socket); | |
1487 | if (ret < 0) { | |
1488 | goto end; | |
1489 | } | |
1490 | ||
1491 | end: | |
dc2bbdae | 1492 | pthread_mutex_unlock(socket->lock); |
7972aab2 | 1493 | health_code_update(); |
7972aab2 DG |
1494 | return ret; |
1495 | } | |
6dc3064a DG |
1496 | |
1497 | /* | |
1498 | * Ask the consumer to snapshot a specific channel using the key. | |
1499 | * | |
9a654598 | 1500 | * Returns LTTNG_OK on success or else an LTTng error code. |
6dc3064a | 1501 | */ |
9a654598 | 1502 | enum lttng_error_code consumer_snapshot_channel(struct consumer_socket *socket, |
348a81dc | 1503 | uint64_t key, const struct consumer_output *output, int metadata, |
d2956687 JG |
1504 | uid_t uid, gid_t gid, const char *channel_path, int wait, |
1505 | uint64_t nb_packets_per_stream) | |
6dc3064a DG |
1506 | { |
1507 | int ret; | |
9a654598 | 1508 | enum lttng_error_code status = LTTNG_OK; |
6dc3064a DG |
1509 | struct lttcomm_consumer_msg msg; |
1510 | ||
1511 | assert(socket); | |
6dc3064a | 1512 | assert(output); |
6dc3064a DG |
1513 | |
1514 | DBG("Consumer snapshot channel key %" PRIu64, key); | |
1515 | ||
ee91bab2 | 1516 | memset(&msg, 0, sizeof(msg)); |
6dc3064a DG |
1517 | msg.cmd_type = LTTNG_CONSUMER_SNAPSHOT_CHANNEL; |
1518 | msg.u.snapshot_channel.key = key; | |
d07ceecd | 1519 | msg.u.snapshot_channel.nb_packets_per_stream = nb_packets_per_stream; |
6dc3064a DG |
1520 | msg.u.snapshot_channel.metadata = metadata; |
1521 | ||
348a81dc | 1522 | if (output->type == CONSUMER_DST_NET) { |
d2956687 | 1523 | msg.u.snapshot_channel.relayd_id = |
348a81dc | 1524 | output->net_seq_index; |
6dc3064a | 1525 | msg.u.snapshot_channel.use_relayd = 1; |
6dc3064a | 1526 | } else { |
07b86b52 | 1527 | msg.u.snapshot_channel.relayd_id = (uint64_t) -1ULL; |
d2956687 JG |
1528 | } |
1529 | ret = lttng_strncpy(msg.u.snapshot_channel.pathname, | |
1530 | channel_path, | |
1531 | sizeof(msg.u.snapshot_channel.pathname)); | |
1532 | if (ret < 0) { | |
1533 | ERR("Snapshot path exceeds the maximal allowed length of %zu bytes (%zu bytes required) with path \"%s\"", | |
1534 | sizeof(msg.u.snapshot_channel.pathname), | |
1535 | strlen(channel_path), | |
1536 | channel_path); | |
1537 | status = LTTNG_ERR_SNAPSHOT_FAIL; | |
1538 | goto error; | |
6dc3064a DG |
1539 | } |
1540 | ||
1541 | health_code_update(); | |
9d1103e6 | 1542 | pthread_mutex_lock(socket->lock); |
6dc3064a | 1543 | ret = consumer_send_msg(socket, &msg); |
9d1103e6 | 1544 | pthread_mutex_unlock(socket->lock); |
6dc3064a | 1545 | if (ret < 0) { |
9bbfb88c MD |
1546 | switch (-ret) { |
1547 | case LTTCOMM_CONSUMERD_CHAN_NOT_FOUND: | |
9a654598 | 1548 | status = LTTNG_ERR_CHAN_NOT_FOUND; |
9bbfb88c MD |
1549 | break; |
1550 | default: | |
9a654598 | 1551 | status = LTTNG_ERR_SNAPSHOT_FAIL; |
9bbfb88c MD |
1552 | break; |
1553 | } | |
6dc3064a DG |
1554 | goto error; |
1555 | } | |
1556 | ||
1557 | error: | |
1558 | health_code_update(); | |
9a654598 | 1559 | return status; |
6dc3064a | 1560 | } |
fb83fe64 JD |
1561 | |
1562 | /* | |
1563 | * Ask the consumer the number of discarded events for a channel. | |
1564 | */ | |
1565 | int consumer_get_discarded_events(uint64_t session_id, uint64_t channel_key, | |
1566 | struct consumer_output *consumer, uint64_t *discarded) | |
1567 | { | |
1568 | int ret; | |
1569 | struct consumer_socket *socket; | |
1570 | struct lttng_ht_iter iter; | |
1571 | struct lttcomm_consumer_msg msg; | |
1572 | ||
1573 | assert(consumer); | |
1574 | ||
1575 | DBG3("Consumer discarded events id %" PRIu64, session_id); | |
1576 | ||
1577 | memset(&msg, 0, sizeof(msg)); | |
1578 | msg.cmd_type = LTTNG_CONSUMER_DISCARDED_EVENTS; | |
1579 | msg.u.discarded_events.session_id = session_id; | |
1580 | msg.u.discarded_events.channel_key = channel_key; | |
1581 | ||
1582 | *discarded = 0; | |
1583 | ||
1584 | /* Send command for each consumer */ | |
1585 | rcu_read_lock(); | |
1586 | cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket, | |
1587 | node.node) { | |
1588 | uint64_t consumer_discarded = 0; | |
1589 | pthread_mutex_lock(socket->lock); | |
1590 | ret = consumer_socket_send(socket, &msg, sizeof(msg)); | |
1591 | if (ret < 0) { | |
1592 | pthread_mutex_unlock(socket->lock); | |
1593 | goto end; | |
1594 | } | |
1595 | ||
1596 | /* | |
1597 | * No need for a recv reply status because the answer to the | |
1598 | * command is the reply status message. | |
1599 | */ | |
1600 | ret = consumer_socket_recv(socket, &consumer_discarded, | |
1601 | sizeof(consumer_discarded)); | |
1602 | if (ret < 0) { | |
1603 | ERR("get discarded events"); | |
1604 | pthread_mutex_unlock(socket->lock); | |
1605 | goto end; | |
1606 | } | |
1607 | pthread_mutex_unlock(socket->lock); | |
1608 | *discarded += consumer_discarded; | |
1609 | } | |
1610 | ret = 0; | |
1611 | DBG("Consumer discarded %" PRIu64 " events in session id %" PRIu64, | |
1612 | *discarded, session_id); | |
1613 | ||
1614 | end: | |
1615 | rcu_read_unlock(); | |
1616 | return ret; | |
1617 | } | |
1618 | ||
1619 | /* | |
1620 | * Ask the consumer the number of lost packets for a channel. | |
1621 | */ | |
1622 | int consumer_get_lost_packets(uint64_t session_id, uint64_t channel_key, | |
1623 | struct consumer_output *consumer, uint64_t *lost) | |
1624 | { | |
1625 | int ret; | |
1626 | struct consumer_socket *socket; | |
1627 | struct lttng_ht_iter iter; | |
1628 | struct lttcomm_consumer_msg msg; | |
1629 | ||
1630 | assert(consumer); | |
1631 | ||
1632 | DBG3("Consumer lost packets id %" PRIu64, session_id); | |
1633 | ||
1634 | memset(&msg, 0, sizeof(msg)); | |
1635 | msg.cmd_type = LTTNG_CONSUMER_LOST_PACKETS; | |
1636 | msg.u.lost_packets.session_id = session_id; | |
1637 | msg.u.lost_packets.channel_key = channel_key; | |
1638 | ||
1639 | *lost = 0; | |
1640 | ||
1641 | /* Send command for each consumer */ | |
1642 | rcu_read_lock(); | |
1643 | cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket, | |
1644 | node.node) { | |
1645 | uint64_t consumer_lost = 0; | |
1646 | pthread_mutex_lock(socket->lock); | |
1647 | ret = consumer_socket_send(socket, &msg, sizeof(msg)); | |
1648 | if (ret < 0) { | |
1649 | pthread_mutex_unlock(socket->lock); | |
1650 | goto end; | |
1651 | } | |
1652 | ||
1653 | /* | |
1654 | * No need for a recv reply status because the answer to the | |
1655 | * command is the reply status message. | |
1656 | */ | |
1657 | ret = consumer_socket_recv(socket, &consumer_lost, | |
1658 | sizeof(consumer_lost)); | |
1659 | if (ret < 0) { | |
1660 | ERR("get lost packets"); | |
1661 | pthread_mutex_unlock(socket->lock); | |
1662 | goto end; | |
1663 | } | |
1664 | pthread_mutex_unlock(socket->lock); | |
1665 | *lost += consumer_lost; | |
1666 | } | |
1667 | ret = 0; | |
1668 | DBG("Consumer lost %" PRIu64 " packets in session id %" PRIu64, | |
1669 | *lost, session_id); | |
1670 | ||
1671 | end: | |
1672 | rcu_read_unlock(); | |
1673 | return ret; | |
1674 | } | |
a1ae2ea5 | 1675 | |
5c408ad8 JD |
1676 | /* |
1677 | * Ask the consumer to rotate a channel. | |
5c408ad8 JD |
1678 | * |
1679 | * The new_chunk_id is the session->rotate_count that has been incremented | |
1680 | * when the rotation started. On the relay, this allows to keep track in which | |
1681 | * chunk each stream is currently writing to (for the rotate_pending operation). | |
1682 | */ | |
1683 | int consumer_rotate_channel(struct consumer_socket *socket, uint64_t key, | |
1684 | uid_t uid, gid_t gid, struct consumer_output *output, | |
d2956687 | 1685 | bool is_metadata_channel) |
5c408ad8 JD |
1686 | { |
1687 | int ret; | |
1688 | struct lttcomm_consumer_msg msg; | |
1689 | ||
1690 | assert(socket); | |
1691 | ||
1692 | DBG("Consumer rotate channel key %" PRIu64, key); | |
1693 | ||
1694 | pthread_mutex_lock(socket->lock); | |
1695 | memset(&msg, 0, sizeof(msg)); | |
1696 | msg.cmd_type = LTTNG_CONSUMER_ROTATE_CHANNEL; | |
1697 | msg.u.rotate_channel.key = key; | |
1698 | msg.u.rotate_channel.metadata = !!is_metadata_channel; | |
5c408ad8 JD |
1699 | |
1700 | if (output->type == CONSUMER_DST_NET) { | |
1701 | msg.u.rotate_channel.relayd_id = output->net_seq_index; | |
5c408ad8 JD |
1702 | } else { |
1703 | msg.u.rotate_channel.relayd_id = (uint64_t) -1ULL; | |
5c408ad8 JD |
1704 | } |
1705 | ||
1706 | health_code_update(); | |
1707 | ret = consumer_send_msg(socket, &msg); | |
1708 | if (ret < 0) { | |
20f37cb4 MD |
1709 | switch (-ret) { |
1710 | case LTTCOMM_CONSUMERD_CHAN_NOT_FOUND: | |
1711 | ret = -LTTNG_ERR_CHAN_NOT_FOUND; | |
1712 | break; | |
1713 | default: | |
1714 | ret = -LTTNG_ERR_ROTATION_FAIL_CONSUMER; | |
1715 | break; | |
1716 | } | |
5c408ad8 JD |
1717 | goto error; |
1718 | } | |
5c408ad8 JD |
1719 | error: |
1720 | pthread_mutex_unlock(socket->lock); | |
1721 | health_code_update(); | |
1722 | return ret; | |
1723 | } | |
1724 | ||
04ed9e10 JG |
1725 | int consumer_open_channel_packets(struct consumer_socket *socket, uint64_t key) |
1726 | { | |
1727 | int ret; | |
1728 | const struct lttcomm_consumer_msg msg = { | |
1729 | .cmd_type = LTTNG_CONSUMER_OPEN_CHANNEL_PACKETS, | |
1730 | .u.open_channel_packets.key = key, | |
1731 | }; | |
1732 | ||
1733 | assert(socket); | |
1734 | ||
1735 | DBG("Consumer open channel packets: channel key = %" PRIu64, key); | |
1736 | ||
1737 | health_code_update(); | |
1738 | ||
1739 | pthread_mutex_lock(socket->lock); | |
1740 | ret = consumer_send_msg(socket, &msg); | |
1741 | pthread_mutex_unlock(socket->lock); | |
1742 | if (ret < 0) { | |
1743 | goto error_socket; | |
1744 | } | |
1745 | ||
1746 | error_socket: | |
1747 | health_code_update(); | |
1748 | return ret; | |
1749 | } | |
1750 | ||
51a4828f MD |
1751 | int consumer_clear_channel(struct consumer_socket *socket, uint64_t key) |
1752 | { | |
1753 | int ret; | |
1754 | struct lttcomm_consumer_msg msg; | |
1755 | ||
1756 | assert(socket); | |
1757 | ||
1758 | DBG("Consumer clear channel %" PRIu64, key); | |
1759 | ||
1760 | memset(&msg, 0, sizeof(msg)); | |
1761 | msg.cmd_type = LTTNG_CONSUMER_CLEAR_CHANNEL; | |
1762 | msg.u.clear_channel.key = key; | |
1763 | ||
1764 | health_code_update(); | |
1765 | ||
1766 | pthread_mutex_lock(socket->lock); | |
1767 | ret = consumer_send_msg(socket, &msg); | |
1768 | if (ret < 0) { | |
1769 | goto error_socket; | |
1770 | } | |
1771 | ||
1772 | error_socket: | |
1773 | pthread_mutex_unlock(socket->lock); | |
1774 | ||
1775 | health_code_update(); | |
1776 | return ret; | |
1777 | } | |
1778 | ||
d2956687 JG |
1779 | int consumer_init(struct consumer_socket *socket, |
1780 | const lttng_uuid sessiond_uuid) | |
00fb02ac JD |
1781 | { |
1782 | int ret; | |
d2956687 JG |
1783 | struct lttcomm_consumer_msg msg = { |
1784 | .cmd_type = LTTNG_CONSUMER_INIT, | |
1785 | }; | |
00fb02ac JD |
1786 | |
1787 | assert(socket); | |
00fb02ac | 1788 | |
d2956687 JG |
1789 | DBG("Sending consumer initialization command"); |
1790 | lttng_uuid_copy(msg.u.init.sessiond_uuid, sessiond_uuid); | |
00fb02ac JD |
1791 | |
1792 | health_code_update(); | |
1793 | ret = consumer_send_msg(socket, &msg); | |
1794 | if (ret < 0) { | |
1795 | goto error; | |
1796 | } | |
1797 | ||
d88744a4 JD |
1798 | error: |
1799 | health_code_update(); | |
1800 | return ret; | |
1801 | } | |
1802 | ||
1803 | /* | |
d2956687 | 1804 | * Ask the consumer to create a new chunk for a given session. |
92816cc3 | 1805 | * |
d2956687 | 1806 | * Called with the consumer socket lock held. |
92816cc3 | 1807 | */ |
d2956687 JG |
1808 | int consumer_create_trace_chunk(struct consumer_socket *socket, |
1809 | uint64_t relayd_id, uint64_t session_id, | |
5da88b0f MD |
1810 | struct lttng_trace_chunk *chunk, |
1811 | const char *domain_subdir) | |
92816cc3 JG |
1812 | { |
1813 | int ret; | |
d2956687 JG |
1814 | enum lttng_trace_chunk_status chunk_status; |
1815 | struct lttng_credentials chunk_credentials; | |
5da88b0f MD |
1816 | const struct lttng_directory_handle *chunk_directory_handle = NULL; |
1817 | struct lttng_directory_handle *domain_handle = NULL; | |
1818 | int domain_dirfd; | |
d2956687 | 1819 | const char *chunk_name; |
913a542b | 1820 | bool chunk_name_overridden; |
d2956687 JG |
1821 | uint64_t chunk_id; |
1822 | time_t creation_timestamp; | |
1823 | char creation_timestamp_buffer[ISO8601_STR_LEN]; | |
1824 | const char *creation_timestamp_str = "(none)"; | |
1825 | const bool chunk_has_local_output = relayd_id == -1ULL; | |
69ebf37e | 1826 | enum lttng_trace_chunk_status tc_status; |
d2956687 JG |
1827 | struct lttcomm_consumer_msg msg = { |
1828 | .cmd_type = LTTNG_CONSUMER_CREATE_TRACE_CHUNK, | |
1829 | .u.create_trace_chunk.session_id = session_id, | |
1830 | }; | |
92816cc3 JG |
1831 | |
1832 | assert(socket); | |
d2956687 | 1833 | assert(chunk); |
92816cc3 | 1834 | |
d2956687 JG |
1835 | if (relayd_id != -1ULL) { |
1836 | LTTNG_OPTIONAL_SET(&msg.u.create_trace_chunk.relayd_id, | |
1837 | relayd_id); | |
1838 | } | |
92816cc3 | 1839 | |
d2956687 | 1840 | chunk_status = lttng_trace_chunk_get_name(chunk, &chunk_name, |
913a542b | 1841 | &chunk_name_overridden); |
d2956687 JG |
1842 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK && |
1843 | chunk_status != LTTNG_TRACE_CHUNK_STATUS_NONE) { | |
1844 | ERR("Failed to get name of trace chunk"); | |
1845 | ret = -LTTNG_ERR_FATAL; | |
92816cc3 JG |
1846 | goto error; |
1847 | } | |
913a542b | 1848 | if (chunk_name_overridden) { |
d2956687 JG |
1849 | ret = lttng_strncpy(msg.u.create_trace_chunk.override_name, |
1850 | chunk_name, | |
1851 | sizeof(msg.u.create_trace_chunk.override_name)); | |
1852 | if (ret) { | |
1853 | ERR("Trace chunk name \"%s\" exceeds the maximal length allowed by the consumer protocol", | |
1854 | chunk_name); | |
1855 | ret = -LTTNG_ERR_FATAL; | |
1856 | goto error; | |
1857 | } | |
1858 | } | |
92816cc3 | 1859 | |
d2956687 JG |
1860 | chunk_status = lttng_trace_chunk_get_creation_timestamp(chunk, |
1861 | &creation_timestamp); | |
1862 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
1863 | ret = -LTTNG_ERR_FATAL; | |
92816cc3 JG |
1864 | goto error; |
1865 | } | |
d2956687 JG |
1866 | msg.u.create_trace_chunk.creation_timestamp = |
1867 | (uint64_t) creation_timestamp; | |
1868 | /* Only used for logging purposes. */ | |
1869 | ret = time_to_iso8601_str(creation_timestamp, | |
1870 | creation_timestamp_buffer, | |
1871 | sizeof(creation_timestamp_buffer)); | |
1872 | creation_timestamp_str = !ret ? creation_timestamp_buffer : | |
1873 | "(formatting error)"; | |
1874 | ||
1875 | chunk_status = lttng_trace_chunk_get_id(chunk, &chunk_id); | |
1876 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
1877 | /* | |
1878 | * Anonymous trace chunks should never be transmitted | |
1879 | * to remote peers (consumerd and relayd). They are used | |
1880 | * internally for backward-compatibility purposes. | |
1881 | */ | |
1882 | ret = -LTTNG_ERR_FATAL; | |
1883 | goto error; | |
1884 | } | |
1885 | msg.u.create_trace_chunk.chunk_id = chunk_id; | |
92816cc3 | 1886 | |
d2956687 | 1887 | if (chunk_has_local_output) { |
cbf53d23 | 1888 | chunk_status = lttng_trace_chunk_borrow_chunk_directory_handle( |
d2956687 JG |
1889 | chunk, &chunk_directory_handle); |
1890 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
1891 | ret = -LTTNG_ERR_FATAL; | |
1892 | goto error; | |
1893 | } | |
e5add6d0 JG |
1894 | chunk_status = lttng_trace_chunk_get_credentials( |
1895 | chunk, &chunk_credentials); | |
1896 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
1897 | /* | |
1898 | * Not associating credentials to a sessiond chunk is a | |
1899 | * fatal internal error. | |
1900 | */ | |
1901 | ret = -LTTNG_ERR_FATAL; | |
1902 | goto error; | |
1903 | } | |
69ebf37e JR |
1904 | tc_status = lttng_trace_chunk_create_subdirectory( |
1905 | chunk, domain_subdir); | |
1906 | if (tc_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
5da88b0f MD |
1907 | PERROR("Failed to create chunk domain output directory \"%s\"", |
1908 | domain_subdir); | |
1909 | ret = -LTTNG_ERR_FATAL; | |
1910 | goto error; | |
1911 | } | |
1912 | domain_handle = lttng_directory_handle_create_from_handle( | |
1913 | domain_subdir, | |
1914 | chunk_directory_handle); | |
1915 | if (!domain_handle) { | |
1916 | ret = -LTTNG_ERR_FATAL; | |
1917 | goto error; | |
1918 | } | |
1919 | ||
1920 | /* | |
1921 | * This will only compile on platforms that support | |
1922 | * dirfd (POSIX.2008). This is fine as the session daemon | |
1923 | * is only built for such platforms. | |
1924 | * | |
1925 | * The ownership of the chunk directory handle's is maintained | |
1926 | * by the trace chunk. | |
1927 | */ | |
1928 | domain_dirfd = lttng_directory_handle_get_dirfd( | |
1929 | domain_handle); | |
1930 | assert(domain_dirfd >= 0); | |
1931 | ||
e5add6d0 | 1932 | msg.u.create_trace_chunk.credentials.value.uid = |
ff588497 | 1933 | lttng_credentials_get_uid(&chunk_credentials); |
e5add6d0 | 1934 | msg.u.create_trace_chunk.credentials.value.gid = |
ff588497 | 1935 | lttng_credentials_get_gid(&chunk_credentials); |
e5add6d0 | 1936 | msg.u.create_trace_chunk.credentials.is_set = 1; |
d2956687 | 1937 | } |
d88744a4 | 1938 | |
d2956687 JG |
1939 | DBG("Sending consumer create trace chunk command: relayd_id = %" PRId64 |
1940 | ", session_id = %" PRIu64 ", chunk_id = %" PRIu64 | |
1941 | ", creation_timestamp = %s", | |
1942 | relayd_id, session_id, chunk_id, | |
1943 | creation_timestamp_str); | |
d88744a4 JD |
1944 | health_code_update(); |
1945 | ret = consumer_send_msg(socket, &msg); | |
d2956687 | 1946 | health_code_update(); |
d88744a4 | 1947 | if (ret < 0) { |
d2956687 JG |
1948 | ERR("Trace chunk creation error on consumer"); |
1949 | ret = -LTTNG_ERR_CREATE_TRACE_CHUNK_FAIL_CONSUMER; | |
d88744a4 JD |
1950 | goto error; |
1951 | } | |
1952 | ||
d2956687 | 1953 | if (chunk_has_local_output) { |
5da88b0f | 1954 | DBG("Sending trace chunk domain directory fd to consumer"); |
d2956687 | 1955 | health_code_update(); |
5da88b0f | 1956 | ret = consumer_send_fds(socket, &domain_dirfd, 1); |
d2956687 JG |
1957 | health_code_update(); |
1958 | if (ret < 0) { | |
1959 | ERR("Trace chunk creation error on consumer"); | |
1960 | ret = -LTTNG_ERR_CREATE_TRACE_CHUNK_FAIL_CONSUMER; | |
1961 | goto error; | |
1962 | } | |
d88744a4 | 1963 | } |
00fb02ac | 1964 | error: |
5da88b0f | 1965 | lttng_directory_handle_put(domain_handle); |
00fb02ac JD |
1966 | return ret; |
1967 | } | |
1968 | ||
a1ae2ea5 | 1969 | /* |
d2956687 | 1970 | * Ask the consumer to close a trace chunk for a given session. |
a1ae2ea5 JD |
1971 | * |
1972 | * Called with the consumer socket lock held. | |
1973 | */ | |
d2956687 JG |
1974 | int consumer_close_trace_chunk(struct consumer_socket *socket, |
1975 | uint64_t relayd_id, uint64_t session_id, | |
ecd1a12f MD |
1976 | struct lttng_trace_chunk *chunk, |
1977 | char *closed_trace_chunk_path) | |
a1ae2ea5 JD |
1978 | { |
1979 | int ret; | |
d2956687 JG |
1980 | enum lttng_trace_chunk_status chunk_status; |
1981 | struct lttcomm_consumer_msg msg = { | |
bbc4768c JG |
1982 | .cmd_type = LTTNG_CONSUMER_CLOSE_TRACE_CHUNK, |
1983 | .u.close_trace_chunk.session_id = session_id, | |
d2956687 | 1984 | }; |
ecd1a12f | 1985 | struct lttcomm_consumer_close_trace_chunk_reply reply; |
d2956687 JG |
1986 | uint64_t chunk_id; |
1987 | time_t close_timestamp; | |
bbc4768c JG |
1988 | enum lttng_trace_chunk_command_type close_command; |
1989 | const char *close_command_name = "none"; | |
ecd1a12f | 1990 | struct lttng_dynamic_buffer path_reception_buffer; |
a1ae2ea5 JD |
1991 | |
1992 | assert(socket); | |
ecd1a12f | 1993 | lttng_dynamic_buffer_init(&path_reception_buffer); |
a1ae2ea5 | 1994 | |
d2956687 | 1995 | if (relayd_id != -1ULL) { |
bbc4768c JG |
1996 | LTTNG_OPTIONAL_SET( |
1997 | &msg.u.close_trace_chunk.relayd_id, relayd_id); | |
1998 | } | |
1999 | ||
2000 | chunk_status = lttng_trace_chunk_get_close_command( | |
2001 | chunk, &close_command); | |
2002 | switch (chunk_status) { | |
2003 | case LTTNG_TRACE_CHUNK_STATUS_OK: | |
2004 | LTTNG_OPTIONAL_SET(&msg.u.close_trace_chunk.close_command, | |
2005 | (uint32_t) close_command); | |
2006 | break; | |
2007 | case LTTNG_TRACE_CHUNK_STATUS_NONE: | |
2008 | break; | |
2009 | default: | |
2010 | ERR("Failed to get trace chunk close command"); | |
2011 | ret = -1; | |
2012 | goto error; | |
a1ae2ea5 JD |
2013 | } |
2014 | ||
d2956687 JG |
2015 | chunk_status = lttng_trace_chunk_get_id(chunk, &chunk_id); |
2016 | /* | |
2017 | * Anonymous trace chunks should never be transmitted to remote peers | |
2018 | * (consumerd and relayd). They are used internally for | |
2019 | * backward-compatibility purposes. | |
2020 | */ | |
2021 | assert(chunk_status == LTTNG_TRACE_CHUNK_STATUS_OK); | |
2022 | msg.u.close_trace_chunk.chunk_id = chunk_id; | |
2023 | ||
2024 | chunk_status = lttng_trace_chunk_get_close_timestamp(chunk, | |
2025 | &close_timestamp); | |
2026 | /* | |
2027 | * A trace chunk should be closed locally before being closed remotely. | |
2028 | * Otherwise, the close timestamp would never be transmitted to the | |
2029 | * peers. | |
2030 | */ | |
2031 | assert(chunk_status == LTTNG_TRACE_CHUNK_STATUS_OK); | |
2032 | msg.u.close_trace_chunk.close_timestamp = (uint64_t) close_timestamp; | |
2033 | ||
bbc4768c JG |
2034 | if (msg.u.close_trace_chunk.close_command.is_set) { |
2035 | close_command_name = lttng_trace_chunk_command_type_get_name( | |
2036 | close_command); | |
2037 | } | |
d2956687 | 2038 | DBG("Sending consumer close trace chunk command: relayd_id = %" PRId64 |
bbc4768c JG |
2039 | ", session_id = %" PRIu64 ", chunk_id = %" PRIu64 |
2040 | ", close command = \"%s\"", | |
2041 | relayd_id, session_id, chunk_id, close_command_name); | |
a1ae2ea5 JD |
2042 | |
2043 | health_code_update(); | |
ecd1a12f | 2044 | ret = consumer_socket_send(socket, &msg, sizeof(struct lttcomm_consumer_msg)); |
a1ae2ea5 | 2045 | if (ret < 0) { |
d2956687 | 2046 | ret = -LTTNG_ERR_CLOSE_TRACE_CHUNK_FAIL_CONSUMER; |
a1ae2ea5 JD |
2047 | goto error; |
2048 | } | |
ecd1a12f MD |
2049 | ret = consumer_socket_recv(socket, &reply, sizeof(reply)); |
2050 | if (ret < 0) { | |
2051 | ret = -LTTNG_ERR_CLOSE_TRACE_CHUNK_FAIL_CONSUMER; | |
2052 | goto error; | |
2053 | } | |
2054 | if (reply.path_length >= LTTNG_PATH_MAX) { | |
2055 | ERR("Invalid path returned by relay daemon: %" PRIu32 "bytes exceeds maximal allowed length of %d bytes", | |
2056 | reply.path_length, LTTNG_PATH_MAX); | |
2057 | ret = -LTTNG_ERR_INVALID_PROTOCOL; | |
2058 | goto error; | |
2059 | } | |
2060 | ret = lttng_dynamic_buffer_set_size(&path_reception_buffer, | |
2061 | reply.path_length); | |
2062 | if (ret) { | |
2063 | ERR("Failed to allocate reception buffer of path returned by the \"close trace chunk\" command"); | |
2064 | ret = -LTTNG_ERR_NOMEM; | |
2065 | goto error; | |
2066 | } | |
2067 | ret = consumer_socket_recv(socket, path_reception_buffer.data, | |
2068 | path_reception_buffer.size); | |
2069 | if (ret < 0) { | |
2070 | ERR("Communication error while receiving path of closed trace chunk"); | |
2071 | ret = -LTTNG_ERR_CLOSE_TRACE_CHUNK_FAIL_CONSUMER; | |
2072 | goto error; | |
2073 | } | |
2074 | if (path_reception_buffer.data[path_reception_buffer.size - 1] != '\0') { | |
2075 | ERR("Invalid path returned by relay daemon: not null-terminated"); | |
2076 | ret = -LTTNG_ERR_INVALID_PROTOCOL; | |
2077 | goto error; | |
2078 | } | |
2079 | if (closed_trace_chunk_path) { | |
2080 | /* | |
2081 | * closed_trace_chunk_path is assumed to have a length >= | |
2082 | * LTTNG_PATH_MAX | |
2083 | */ | |
2084 | memcpy(closed_trace_chunk_path, path_reception_buffer.data, | |
2085 | path_reception_buffer.size); | |
2086 | } | |
a1ae2ea5 | 2087 | error: |
ecd1a12f | 2088 | lttng_dynamic_buffer_reset(&path_reception_buffer); |
a1ae2ea5 JD |
2089 | health_code_update(); |
2090 | return ret; | |
2091 | } | |
3654ed19 | 2092 | |
d2956687 JG |
2093 | /* |
2094 | * Ask the consumer if a trace chunk exists. | |
2095 | * | |
2096 | * Called with the consumer socket lock held. | |
2097 | * Returns 0 on success, or a negative value on error. | |
2098 | */ | |
2099 | int consumer_trace_chunk_exists(struct consumer_socket *socket, | |
2100 | uint64_t relayd_id, uint64_t session_id, | |
2101 | struct lttng_trace_chunk *chunk, | |
2102 | enum consumer_trace_chunk_exists_status *result) | |
3654ed19 JG |
2103 | { |
2104 | int ret; | |
d2956687 | 2105 | enum lttng_trace_chunk_status chunk_status; |
3654ed19 | 2106 | struct lttcomm_consumer_msg msg = { |
d2956687 JG |
2107 | .cmd_type = LTTNG_CONSUMER_TRACE_CHUNK_EXISTS, |
2108 | .u.trace_chunk_exists.session_id = session_id, | |
3654ed19 | 2109 | }; |
d2956687 JG |
2110 | uint64_t chunk_id; |
2111 | const char *consumer_reply_str; | |
3654ed19 JG |
2112 | |
2113 | assert(socket); | |
2114 | ||
d2956687 JG |
2115 | if (relayd_id != -1ULL) { |
2116 | LTTNG_OPTIONAL_SET(&msg.u.trace_chunk_exists.relayd_id, | |
2117 | relayd_id); | |
2118 | } | |
2119 | ||
2120 | chunk_status = lttng_trace_chunk_get_id(chunk, &chunk_id); | |
2121 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
2122 | /* | |
2123 | * Anonymous trace chunks should never be transmitted | |
2124 | * to remote peers (consumerd and relayd). They are used | |
2125 | * internally for backward-compatibility purposes. | |
2126 | */ | |
2127 | ret = -LTTNG_ERR_FATAL; | |
2128 | goto error; | |
2129 | } | |
2130 | msg.u.trace_chunk_exists.chunk_id = chunk_id; | |
2131 | ||
2132 | DBG("Sending consumer trace chunk exists command: relayd_id = %" PRId64 | |
2133 | ", session_id = %" PRIu64 | |
2134 | ", chunk_id = %" PRIu64, relayd_id, session_id, chunk_id); | |
3654ed19 JG |
2135 | |
2136 | health_code_update(); | |
2137 | ret = consumer_send_msg(socket, &msg); | |
d2956687 JG |
2138 | switch (-ret) { |
2139 | case LTTCOMM_CONSUMERD_UNKNOWN_TRACE_CHUNK: | |
2140 | consumer_reply_str = "unknown trace chunk"; | |
2141 | *result = CONSUMER_TRACE_CHUNK_EXISTS_STATUS_UNKNOWN_CHUNK; | |
2142 | break; | |
2143 | case LTTCOMM_CONSUMERD_TRACE_CHUNK_EXISTS_LOCAL: | |
2144 | consumer_reply_str = "trace chunk exists locally"; | |
2145 | *result = CONSUMER_TRACE_CHUNK_EXISTS_STATUS_EXISTS_LOCAL; | |
2146 | break; | |
2147 | case LTTCOMM_CONSUMERD_TRACE_CHUNK_EXISTS_REMOTE: | |
2148 | consumer_reply_str = "trace chunk exists on remote peer"; | |
2149 | *result = CONSUMER_TRACE_CHUNK_EXISTS_STATUS_EXISTS_REMOTE; | |
2150 | break; | |
2151 | default: | |
2152 | ERR("Consumer returned an error from TRACE_CHUNK_EXISTS command"); | |
2153 | ret = -1; | |
3654ed19 JG |
2154 | goto error; |
2155 | } | |
d2956687 JG |
2156 | DBG("Consumer reply to TRACE_CHUNK_EXISTS command: %s", |
2157 | consumer_reply_str); | |
2158 | ret = 0; | |
3654ed19 JG |
2159 | error: |
2160 | health_code_update(); | |
2161 | return ret; | |
2162 | } |