Commit | Line | Data |
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00e2e675 DG |
1 | /* |
2 | * Copyright (C) 2012 - David Goulet <dgoulet@efficios.com> | |
92816cc3 | 3 | * 2018 - Jérémie Galarneau <jeremie.galarneau@efficios.com> |
00e2e675 DG |
4 | * |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms of the GNU General Public License, version 2 only, as | |
7 | * published by the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
12 | * more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License along with | |
15 | * this program; if not, write to the Free Software Foundation, Inc., 51 | |
16 | * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
17 | */ | |
18 | ||
6c1c0768 | 19 | #define _LGPL_SOURCE |
00e2e675 DG |
20 | #include <assert.h> |
21 | #include <stdio.h> | |
22 | #include <stdlib.h> | |
23 | #include <string.h> | |
24 | #include <sys/stat.h> | |
25 | #include <sys/types.h> | |
26 | #include <unistd.h> | |
d88aee68 | 27 | #include <inttypes.h> |
00e2e675 DG |
28 | |
29 | #include <common/common.h> | |
30 | #include <common/defaults.h> | |
31 | #include <common/uri.h> | |
d3e2ba59 | 32 | #include <common/relayd/relayd.h> |
d2956687 | 33 | #include <common/string-utils/format.h> |
00e2e675 DG |
34 | |
35 | #include "consumer.h" | |
8782cc74 | 36 | #include "health-sessiond.h" |
7972aab2 | 37 | #include "ust-app.h" |
0b2dc8df | 38 | #include "utils.h" |
658f12fa | 39 | #include "lttng-sessiond.h" |
00e2e675 | 40 | |
3b967712 MD |
41 | /* |
42 | * Return allocated full pathname of the session using the consumer trace path | |
43 | * and subdir if available. | |
44 | * | |
45 | * The caller can safely free(3) the returned value. On error, NULL is | |
46 | * returned. | |
47 | */ | |
48 | char *setup_channel_trace_path(struct consumer_output *consumer, | |
5da88b0f | 49 | const char *session_path, size_t *consumer_path_offset) |
3b967712 MD |
50 | { |
51 | int ret; | |
52 | char *pathname; | |
53 | ||
54 | assert(consumer); | |
55 | assert(session_path); | |
56 | ||
57 | health_code_update(); | |
58 | ||
59 | /* | |
60 | * Allocate the string ourself to make sure we never exceed | |
61 | * LTTNG_PATH_MAX. | |
62 | */ | |
63 | pathname = zmalloc(LTTNG_PATH_MAX); | |
64 | if (!pathname) { | |
65 | goto error; | |
66 | } | |
67 | ||
68 | /* Get correct path name destination */ | |
69 | if (consumer->type == CONSUMER_DST_NET && | |
70 | consumer->relay_major_version == 2 && | |
71 | consumer->relay_minor_version < 11) { | |
5da88b0f | 72 | ret = snprintf(pathname, LTTNG_PATH_MAX, "%s%s/%s/%s", |
3b967712 MD |
73 | consumer->dst.net.base_dir, |
74 | consumer->chunk_path, consumer->domain_subdir, | |
75 | session_path); | |
5da88b0f | 76 | *consumer_path_offset = 0; |
3b967712 | 77 | } else { |
5da88b0f | 78 | ret = snprintf(pathname, LTTNG_PATH_MAX, "%s/%s", |
3b967712 | 79 | consumer->domain_subdir, session_path); |
5da88b0f | 80 | *consumer_path_offset = strlen(consumer->domain_subdir) + 1; |
3b967712 MD |
81 | } |
82 | DBG3("Consumer trace path relative to current trace chunk: \"%s\"", | |
83 | pathname); | |
84 | if (ret < 0) { | |
85 | PERROR("Failed to format channel path"); | |
86 | goto error; | |
87 | } else if (ret >= LTTNG_PATH_MAX) { | |
88 | ERR("Truncation occurred while formatting channel path"); | |
3b967712 MD |
89 | goto error; |
90 | } | |
91 | ||
92 | return pathname; | |
93 | error: | |
94 | free(pathname); | |
95 | return NULL; | |
96 | } | |
97 | ||
52898cb1 DG |
98 | /* |
99 | * Send a data payload using a given consumer socket of size len. | |
100 | * | |
101 | * The consumer socket lock MUST be acquired before calling this since this | |
102 | * function can change the fd value. | |
103 | * | |
104 | * Return 0 on success else a negative value on error. | |
105 | */ | |
106 | int consumer_socket_send(struct consumer_socket *socket, void *msg, size_t len) | |
107 | { | |
108 | int fd; | |
109 | ssize_t size; | |
110 | ||
111 | assert(socket); | |
9363801e | 112 | assert(socket->fd_ptr); |
52898cb1 DG |
113 | assert(msg); |
114 | ||
115 | /* Consumer socket is invalid. Stopping. */ | |
9363801e | 116 | fd = *socket->fd_ptr; |
52898cb1 DG |
117 | if (fd < 0) { |
118 | goto error; | |
119 | } | |
120 | ||
121 | size = lttcomm_send_unix_sock(fd, msg, len); | |
122 | if (size < 0) { | |
123 | /* The above call will print a PERROR on error. */ | |
124 | DBG("Error when sending data to consumer on sock %d", fd); | |
125 | /* | |
92db7cdc DG |
126 | * At this point, the socket is not usable anymore thus closing it and |
127 | * setting the file descriptor to -1 so it is not reused. | |
52898cb1 DG |
128 | */ |
129 | ||
130 | /* This call will PERROR on error. */ | |
131 | (void) lttcomm_close_unix_sock(fd); | |
9363801e | 132 | *socket->fd_ptr = -1; |
52898cb1 DG |
133 | goto error; |
134 | } | |
135 | ||
136 | return 0; | |
137 | ||
138 | error: | |
139 | return -1; | |
140 | } | |
141 | ||
142 | /* | |
143 | * Receive a data payload using a given consumer socket of size len. | |
144 | * | |
145 | * The consumer socket lock MUST be acquired before calling this since this | |
146 | * function can change the fd value. | |
147 | * | |
148 | * Return 0 on success else a negative value on error. | |
149 | */ | |
150 | int consumer_socket_recv(struct consumer_socket *socket, void *msg, size_t len) | |
151 | { | |
152 | int fd; | |
153 | ssize_t size; | |
154 | ||
155 | assert(socket); | |
9363801e | 156 | assert(socket->fd_ptr); |
52898cb1 DG |
157 | assert(msg); |
158 | ||
159 | /* Consumer socket is invalid. Stopping. */ | |
9363801e | 160 | fd = *socket->fd_ptr; |
52898cb1 DG |
161 | if (fd < 0) { |
162 | goto error; | |
163 | } | |
164 | ||
165 | size = lttcomm_recv_unix_sock(fd, msg, len); | |
166 | if (size <= 0) { | |
167 | /* The above call will print a PERROR on error. */ | |
168 | DBG("Error when receiving data from the consumer socket %d", fd); | |
169 | /* | |
92db7cdc DG |
170 | * At this point, the socket is not usable anymore thus closing it and |
171 | * setting the file descriptor to -1 so it is not reused. | |
52898cb1 DG |
172 | */ |
173 | ||
174 | /* This call will PERROR on error. */ | |
175 | (void) lttcomm_close_unix_sock(fd); | |
9363801e | 176 | *socket->fd_ptr = -1; |
52898cb1 DG |
177 | goto error; |
178 | } | |
179 | ||
180 | return 0; | |
181 | ||
182 | error: | |
183 | return -1; | |
184 | } | |
185 | ||
f50f23d9 DG |
186 | /* |
187 | * Receive a reply command status message from the consumer. Consumer socket | |
188 | * lock MUST be acquired before calling this function. | |
189 | * | |
190 | * Return 0 on success, -1 on recv error or a negative lttng error code which | |
191 | * was possibly returned by the consumer. | |
192 | */ | |
193 | int consumer_recv_status_reply(struct consumer_socket *sock) | |
194 | { | |
195 | int ret; | |
196 | struct lttcomm_consumer_status_msg reply; | |
197 | ||
198 | assert(sock); | |
199 | ||
52898cb1 DG |
200 | ret = consumer_socket_recv(sock, &reply, sizeof(reply)); |
201 | if (ret < 0) { | |
f50f23d9 DG |
202 | goto end; |
203 | } | |
204 | ||
0c759fc9 | 205 | if (reply.ret_code == LTTCOMM_CONSUMERD_SUCCESS) { |
f50f23d9 DG |
206 | /* All good. */ |
207 | ret = 0; | |
208 | } else { | |
209 | ret = -reply.ret_code; | |
ffe60014 | 210 | DBG("Consumer ret code %d", ret); |
f50f23d9 DG |
211 | } |
212 | ||
213 | end: | |
214 | return ret; | |
215 | } | |
216 | ||
ffe60014 DG |
217 | /* |
218 | * Once the ASK_CHANNEL command is sent to the consumer, the channel | |
219 | * information are sent back. This call receives that data and populates key | |
220 | * and stream_count. | |
221 | * | |
222 | * On success return 0 and both key and stream_count are set. On error, a | |
223 | * negative value is sent back and both parameters are untouched. | |
224 | */ | |
225 | int consumer_recv_status_channel(struct consumer_socket *sock, | |
d88aee68 | 226 | uint64_t *key, unsigned int *stream_count) |
ffe60014 DG |
227 | { |
228 | int ret; | |
229 | struct lttcomm_consumer_status_channel reply; | |
230 | ||
231 | assert(sock); | |
232 | assert(stream_count); | |
233 | assert(key); | |
234 | ||
52898cb1 DG |
235 | ret = consumer_socket_recv(sock, &reply, sizeof(reply)); |
236 | if (ret < 0) { | |
ffe60014 DG |
237 | goto end; |
238 | } | |
239 | ||
240 | /* An error is possible so don't touch the key and stream_count. */ | |
0c759fc9 | 241 | if (reply.ret_code != LTTCOMM_CONSUMERD_SUCCESS) { |
ffe60014 DG |
242 | ret = -1; |
243 | goto end; | |
244 | } | |
245 | ||
246 | *key = reply.key; | |
247 | *stream_count = reply.stream_count; | |
0c759fc9 | 248 | ret = 0; |
ffe60014 DG |
249 | |
250 | end: | |
251 | return ret; | |
252 | } | |
253 | ||
2f77fc4b DG |
254 | /* |
255 | * Send destroy relayd command to consumer. | |
256 | * | |
257 | * On success return positive value. On error, negative value. | |
258 | */ | |
259 | int consumer_send_destroy_relayd(struct consumer_socket *sock, | |
260 | struct consumer_output *consumer) | |
261 | { | |
262 | int ret; | |
263 | struct lttcomm_consumer_msg msg; | |
264 | ||
265 | assert(consumer); | |
266 | assert(sock); | |
267 | ||
9363801e | 268 | DBG2("Sending destroy relayd command to consumer sock %d", *sock->fd_ptr); |
2f77fc4b | 269 | |
53efb85a | 270 | memset(&msg, 0, sizeof(msg)); |
2f77fc4b DG |
271 | msg.cmd_type = LTTNG_CONSUMER_DESTROY_RELAYD; |
272 | msg.u.destroy_relayd.net_seq_idx = consumer->net_seq_index; | |
273 | ||
274 | pthread_mutex_lock(sock->lock); | |
52898cb1 | 275 | ret = consumer_socket_send(sock, &msg, sizeof(msg)); |
2f77fc4b | 276 | if (ret < 0) { |
52898cb1 | 277 | goto error; |
2f77fc4b DG |
278 | } |
279 | ||
f50f23d9 DG |
280 | /* Don't check the return value. The caller will do it. */ |
281 | ret = consumer_recv_status_reply(sock); | |
282 | ||
2f77fc4b DG |
283 | DBG2("Consumer send destroy relayd command done"); |
284 | ||
285 | error: | |
52898cb1 | 286 | pthread_mutex_unlock(sock->lock); |
2f77fc4b DG |
287 | return ret; |
288 | } | |
289 | ||
290 | /* | |
291 | * For each consumer socket in the consumer output object, send a destroy | |
292 | * relayd command. | |
293 | */ | |
294 | void consumer_output_send_destroy_relayd(struct consumer_output *consumer) | |
295 | { | |
2f77fc4b DG |
296 | struct lttng_ht_iter iter; |
297 | struct consumer_socket *socket; | |
298 | ||
299 | assert(consumer); | |
300 | ||
301 | /* Destroy any relayd connection */ | |
6dc3064a | 302 | if (consumer->type == CONSUMER_DST_NET) { |
2f77fc4b DG |
303 | rcu_read_lock(); |
304 | cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket, | |
305 | node.node) { | |
c617c0c6 MD |
306 | int ret; |
307 | ||
2f77fc4b DG |
308 | /* Send destroy relayd command */ |
309 | ret = consumer_send_destroy_relayd(socket, consumer); | |
310 | if (ret < 0) { | |
c5c45efa | 311 | DBG("Unable to send destroy relayd command to consumer"); |
2f77fc4b DG |
312 | /* Continue since we MUST delete everything at this point. */ |
313 | } | |
314 | } | |
315 | rcu_read_unlock(); | |
316 | } | |
317 | } | |
318 | ||
a4b92340 DG |
319 | /* |
320 | * From a consumer_data structure, allocate and add a consumer socket to the | |
321 | * consumer output. | |
322 | * | |
323 | * Return 0 on success, else negative value on error | |
324 | */ | |
325 | int consumer_create_socket(struct consumer_data *data, | |
326 | struct consumer_output *output) | |
327 | { | |
328 | int ret = 0; | |
329 | struct consumer_socket *socket; | |
330 | ||
331 | assert(data); | |
332 | ||
333 | if (output == NULL || data->cmd_sock < 0) { | |
334 | /* | |
335 | * Not an error. Possible there is simply not spawned consumer or it's | |
336 | * disabled for the tracing session asking the socket. | |
337 | */ | |
338 | goto error; | |
339 | } | |
340 | ||
341 | rcu_read_lock(); | |
342 | socket = consumer_find_socket(data->cmd_sock, output); | |
343 | rcu_read_unlock(); | |
344 | if (socket == NULL) { | |
4ce514c4 | 345 | socket = consumer_allocate_socket(&data->cmd_sock); |
a4b92340 DG |
346 | if (socket == NULL) { |
347 | ret = -1; | |
348 | goto error; | |
349 | } | |
350 | ||
2f77fc4b | 351 | socket->registered = 0; |
a4b92340 DG |
352 | socket->lock = &data->lock; |
353 | rcu_read_lock(); | |
354 | consumer_add_socket(socket, output); | |
355 | rcu_read_unlock(); | |
356 | } | |
357 | ||
6dc3064a DG |
358 | socket->type = data->type; |
359 | ||
a4b92340 DG |
360 | DBG3("Consumer socket created (fd: %d) and added to output", |
361 | data->cmd_sock); | |
362 | ||
363 | error: | |
364 | return ret; | |
365 | } | |
366 | ||
7972aab2 DG |
367 | /* |
368 | * Return the consumer socket from the given consumer output with the right | |
369 | * bitness. On error, returns NULL. | |
370 | * | |
371 | * The caller MUST acquire a rcu read side lock and keep it until the socket | |
372 | * object reference is not needed anymore. | |
373 | */ | |
374 | struct consumer_socket *consumer_find_socket_by_bitness(int bits, | |
348a81dc | 375 | const struct consumer_output *consumer) |
7972aab2 DG |
376 | { |
377 | int consumer_fd; | |
378 | struct consumer_socket *socket = NULL; | |
379 | ||
380 | switch (bits) { | |
381 | case 64: | |
382 | consumer_fd = uatomic_read(&ust_consumerd64_fd); | |
383 | break; | |
384 | case 32: | |
385 | consumer_fd = uatomic_read(&ust_consumerd32_fd); | |
386 | break; | |
387 | default: | |
388 | assert(0); | |
389 | goto end; | |
390 | } | |
391 | ||
392 | socket = consumer_find_socket(consumer_fd, consumer); | |
393 | if (!socket) { | |
394 | ERR("Consumer socket fd %d not found in consumer obj %p", | |
395 | consumer_fd, consumer); | |
396 | } | |
397 | ||
398 | end: | |
399 | return socket; | |
400 | } | |
401 | ||
173af62f DG |
402 | /* |
403 | * Find a consumer_socket in a consumer_output hashtable. Read side lock must | |
404 | * be acquired before calling this function and across use of the | |
405 | * returned consumer_socket. | |
406 | */ | |
407 | struct consumer_socket *consumer_find_socket(int key, | |
348a81dc | 408 | const struct consumer_output *consumer) |
173af62f DG |
409 | { |
410 | struct lttng_ht_iter iter; | |
411 | struct lttng_ht_node_ulong *node; | |
412 | struct consumer_socket *socket = NULL; | |
413 | ||
414 | /* Negative keys are lookup failures */ | |
a4b92340 | 415 | if (key < 0 || consumer == NULL) { |
173af62f DG |
416 | return NULL; |
417 | } | |
418 | ||
419 | lttng_ht_lookup(consumer->socks, (void *)((unsigned long) key), | |
420 | &iter); | |
421 | node = lttng_ht_iter_get_node_ulong(&iter); | |
422 | if (node != NULL) { | |
423 | socket = caa_container_of(node, struct consumer_socket, node); | |
424 | } | |
425 | ||
426 | return socket; | |
427 | } | |
428 | ||
429 | /* | |
430 | * Allocate a new consumer_socket and return the pointer. | |
431 | */ | |
4ce514c4 | 432 | struct consumer_socket *consumer_allocate_socket(int *fd) |
173af62f DG |
433 | { |
434 | struct consumer_socket *socket = NULL; | |
435 | ||
4ce514c4 DG |
436 | assert(fd); |
437 | ||
173af62f DG |
438 | socket = zmalloc(sizeof(struct consumer_socket)); |
439 | if (socket == NULL) { | |
440 | PERROR("zmalloc consumer socket"); | |
441 | goto error; | |
442 | } | |
443 | ||
9363801e | 444 | socket->fd_ptr = fd; |
4ce514c4 | 445 | lttng_ht_node_init_ulong(&socket->node, *fd); |
173af62f DG |
446 | |
447 | error: | |
448 | return socket; | |
449 | } | |
450 | ||
451 | /* | |
452 | * Add consumer socket to consumer output object. Read side lock must be | |
453 | * acquired before calling this function. | |
454 | */ | |
455 | void consumer_add_socket(struct consumer_socket *sock, | |
456 | struct consumer_output *consumer) | |
457 | { | |
458 | assert(sock); | |
459 | assert(consumer); | |
460 | ||
461 | lttng_ht_add_unique_ulong(consumer->socks, &sock->node); | |
462 | } | |
463 | ||
464 | /* | |
348a81dc | 465 | * Delete consumer socket to consumer output object. Read side lock must be |
173af62f DG |
466 | * acquired before calling this function. |
467 | */ | |
468 | void consumer_del_socket(struct consumer_socket *sock, | |
469 | struct consumer_output *consumer) | |
470 | { | |
471 | int ret; | |
472 | struct lttng_ht_iter iter; | |
473 | ||
474 | assert(sock); | |
475 | assert(consumer); | |
476 | ||
477 | iter.iter.node = &sock->node.node; | |
478 | ret = lttng_ht_del(consumer->socks, &iter); | |
479 | assert(!ret); | |
480 | } | |
481 | ||
482 | /* | |
483 | * RCU destroy call function. | |
484 | */ | |
485 | static void destroy_socket_rcu(struct rcu_head *head) | |
486 | { | |
487 | struct lttng_ht_node_ulong *node = | |
488 | caa_container_of(head, struct lttng_ht_node_ulong, head); | |
489 | struct consumer_socket *socket = | |
490 | caa_container_of(node, struct consumer_socket, node); | |
491 | ||
492 | free(socket); | |
493 | } | |
494 | ||
495 | /* | |
496 | * Destroy and free socket pointer in a call RCU. Read side lock must be | |
497 | * acquired before calling this function. | |
498 | */ | |
499 | void consumer_destroy_socket(struct consumer_socket *sock) | |
500 | { | |
501 | assert(sock); | |
502 | ||
503 | /* | |
504 | * We DO NOT close the file descriptor here since it is global to the | |
2f77fc4b DG |
505 | * session daemon and is closed only if the consumer dies or a custom |
506 | * consumer was registered, | |
173af62f | 507 | */ |
2f77fc4b | 508 | if (sock->registered) { |
9363801e DG |
509 | DBG3("Consumer socket was registered. Closing fd %d", *sock->fd_ptr); |
510 | lttcomm_close_unix_sock(*sock->fd_ptr); | |
2f77fc4b | 511 | } |
173af62f DG |
512 | |
513 | call_rcu(&sock->node.head, destroy_socket_rcu); | |
514 | } | |
515 | ||
00e2e675 DG |
516 | /* |
517 | * Allocate and assign data to a consumer_output object. | |
518 | * | |
519 | * Return pointer to structure. | |
520 | */ | |
521 | struct consumer_output *consumer_create_output(enum consumer_dst_type type) | |
522 | { | |
523 | struct consumer_output *output = NULL; | |
524 | ||
525 | output = zmalloc(sizeof(struct consumer_output)); | |
526 | if (output == NULL) { | |
527 | PERROR("zmalloc consumer_output"); | |
528 | goto error; | |
529 | } | |
530 | ||
531 | /* By default, consumer output is enabled */ | |
532 | output->enabled = 1; | |
533 | output->type = type; | |
d88aee68 | 534 | output->net_seq_index = (uint64_t) -1ULL; |
6addfa37 | 535 | urcu_ref_init(&output->ref); |
173af62f DG |
536 | |
537 | output->socks = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG); | |
00e2e675 DG |
538 | |
539 | error: | |
540 | return output; | |
541 | } | |
542 | ||
af706bb7 DG |
543 | /* |
544 | * Iterate over the consumer output socket hash table and destroy them. The | |
545 | * socket file descriptor are only closed if the consumer output was | |
546 | * registered meaning it's an external consumer. | |
547 | */ | |
548 | void consumer_destroy_output_sockets(struct consumer_output *obj) | |
549 | { | |
550 | struct lttng_ht_iter iter; | |
551 | struct consumer_socket *socket; | |
552 | ||
553 | if (!obj->socks) { | |
554 | return; | |
555 | } | |
556 | ||
557 | rcu_read_lock(); | |
558 | cds_lfht_for_each_entry(obj->socks->ht, &iter.iter, socket, node.node) { | |
559 | consumer_del_socket(socket, obj); | |
560 | consumer_destroy_socket(socket); | |
561 | } | |
562 | rcu_read_unlock(); | |
563 | } | |
564 | ||
00e2e675 DG |
565 | /* |
566 | * Delete the consumer_output object from the list and free the ptr. | |
36b588ed MD |
567 | * |
568 | * Should *NOT* be called with RCU read-side lock held. | |
00e2e675 | 569 | */ |
6addfa37 | 570 | static void consumer_release_output(struct urcu_ref *ref) |
00e2e675 | 571 | { |
6addfa37 MD |
572 | struct consumer_output *obj = |
573 | caa_container_of(ref, struct consumer_output, ref); | |
00e2e675 | 574 | |
af706bb7 | 575 | consumer_destroy_output_sockets(obj); |
2f77fc4b | 576 | |
af706bb7 | 577 | if (obj->socks) { |
2f77fc4b | 578 | /* Finally destroy HT */ |
0b2dc8df | 579 | ht_cleanup_push(obj->socks); |
00e2e675 | 580 | } |
173af62f | 581 | |
00e2e675 DG |
582 | free(obj); |
583 | } | |
584 | ||
6addfa37 MD |
585 | /* |
586 | * Get the consumer_output object. | |
587 | */ | |
588 | void consumer_output_get(struct consumer_output *obj) | |
589 | { | |
590 | urcu_ref_get(&obj->ref); | |
591 | } | |
592 | ||
593 | /* | |
594 | * Put the consumer_output object. | |
595 | * | |
596 | * Should *NOT* be called with RCU read-side lock held. | |
597 | */ | |
598 | void consumer_output_put(struct consumer_output *obj) | |
599 | { | |
600 | if (!obj) { | |
601 | return; | |
602 | } | |
603 | urcu_ref_put(&obj->ref, consumer_release_output); | |
604 | } | |
605 | ||
00e2e675 DG |
606 | /* |
607 | * Copy consumer output and returned the newly allocated copy. | |
36b588ed MD |
608 | * |
609 | * Should *NOT* be called with RCU read-side lock held. | |
00e2e675 | 610 | */ |
b178f53e | 611 | struct consumer_output *consumer_copy_output(struct consumer_output *src) |
00e2e675 | 612 | { |
6dc3064a | 613 | int ret; |
00e2e675 DG |
614 | struct consumer_output *output; |
615 | ||
b178f53e | 616 | assert(src); |
00e2e675 | 617 | |
b178f53e | 618 | output = consumer_create_output(src->type); |
00e2e675 | 619 | if (output == NULL) { |
6addfa37 | 620 | goto end; |
00e2e675 | 621 | } |
b178f53e JG |
622 | output->enabled = src->enabled; |
623 | output->net_seq_index = src->net_seq_index; | |
624 | memcpy(output->domain_subdir, src->domain_subdir, | |
625 | sizeof(output->domain_subdir)); | |
626 | output->snapshot = src->snapshot; | |
627 | output->relay_major_version = src->relay_major_version; | |
628 | output->relay_minor_version = src->relay_minor_version; | |
eacb7b6f | 629 | output->relay_allows_clear = src->relay_allows_clear; |
b178f53e JG |
630 | memcpy(&output->dst, &src->dst, sizeof(output->dst)); |
631 | ret = consumer_copy_sockets(output, src); | |
6dc3064a | 632 | if (ret < 0) { |
6addfa37 | 633 | goto error_put; |
6dc3064a | 634 | } |
6addfa37 | 635 | end: |
6dc3064a DG |
636 | return output; |
637 | ||
6addfa37 MD |
638 | error_put: |
639 | consumer_output_put(output); | |
6dc3064a DG |
640 | return NULL; |
641 | } | |
642 | ||
643 | /* | |
644 | * Copy consumer sockets from src to dst. | |
645 | * | |
646 | * Return 0 on success or else a negative value. | |
647 | */ | |
648 | int consumer_copy_sockets(struct consumer_output *dst, | |
649 | struct consumer_output *src) | |
650 | { | |
651 | int ret = 0; | |
652 | struct lttng_ht_iter iter; | |
653 | struct consumer_socket *socket, *copy_sock; | |
654 | ||
655 | assert(dst); | |
656 | assert(src); | |
657 | ||
b82c5c4d | 658 | rcu_read_lock(); |
6dc3064a DG |
659 | cds_lfht_for_each_entry(src->socks->ht, &iter.iter, socket, node.node) { |
660 | /* Ignore socket that are already there. */ | |
9363801e | 661 | copy_sock = consumer_find_socket(*socket->fd_ptr, dst); |
6dc3064a DG |
662 | if (copy_sock) { |
663 | continue; | |
664 | } | |
665 | ||
173af62f | 666 | /* Create new socket object. */ |
9363801e | 667 | copy_sock = consumer_allocate_socket(socket->fd_ptr); |
173af62f | 668 | if (copy_sock == NULL) { |
b82c5c4d | 669 | rcu_read_unlock(); |
6dc3064a DG |
670 | ret = -ENOMEM; |
671 | goto error; | |
173af62f DG |
672 | } |
673 | ||
09a90bcd | 674 | copy_sock->registered = socket->registered; |
6dc3064a DG |
675 | /* |
676 | * This is valid because this lock is shared accross all consumer | |
677 | * object being the global lock of the consumer data structure of the | |
678 | * session daemon. | |
679 | */ | |
173af62f | 680 | copy_sock->lock = socket->lock; |
6dc3064a | 681 | consumer_add_socket(copy_sock, dst); |
173af62f | 682 | } |
b82c5c4d | 683 | rcu_read_unlock(); |
173af62f | 684 | |
00e2e675 | 685 | error: |
6dc3064a | 686 | return ret; |
00e2e675 DG |
687 | } |
688 | ||
689 | /* | |
b178f53e | 690 | * Set network URI to the consumer output. |
00e2e675 | 691 | * |
ad20f474 DG |
692 | * Return 0 on success. Return 1 if the URI were equal. Else, negative value on |
693 | * error. | |
00e2e675 | 694 | */ |
b178f53e JG |
695 | int consumer_set_network_uri(const struct ltt_session *session, |
696 | struct consumer_output *output, | |
00e2e675 DG |
697 | struct lttng_uri *uri) |
698 | { | |
699 | int ret; | |
00e2e675 DG |
700 | struct lttng_uri *dst_uri = NULL; |
701 | ||
702 | /* Code flow error safety net. */ | |
b178f53e | 703 | assert(output); |
00e2e675 DG |
704 | assert(uri); |
705 | ||
706 | switch (uri->stype) { | |
707 | case LTTNG_STREAM_CONTROL: | |
b178f53e JG |
708 | dst_uri = &output->dst.net.control; |
709 | output->dst.net.control_isset = 1; | |
00e2e675 DG |
710 | if (uri->port == 0) { |
711 | /* Assign default port. */ | |
712 | uri->port = DEFAULT_NETWORK_CONTROL_PORT; | |
a74934ba | 713 | } else { |
b178f53e JG |
714 | if (output->dst.net.data_isset && uri->port == |
715 | output->dst.net.data.port) { | |
a74934ba DG |
716 | ret = -LTTNG_ERR_INVALID; |
717 | goto error; | |
718 | } | |
00e2e675 | 719 | } |
ad20f474 | 720 | DBG3("Consumer control URI set with port %d", uri->port); |
00e2e675 DG |
721 | break; |
722 | case LTTNG_STREAM_DATA: | |
b178f53e JG |
723 | dst_uri = &output->dst.net.data; |
724 | output->dst.net.data_isset = 1; | |
00e2e675 DG |
725 | if (uri->port == 0) { |
726 | /* Assign default port. */ | |
727 | uri->port = DEFAULT_NETWORK_DATA_PORT; | |
a74934ba | 728 | } else { |
b178f53e JG |
729 | if (output->dst.net.control_isset && uri->port == |
730 | output->dst.net.control.port) { | |
a74934ba DG |
731 | ret = -LTTNG_ERR_INVALID; |
732 | goto error; | |
733 | } | |
00e2e675 | 734 | } |
ad20f474 | 735 | DBG3("Consumer data URI set with port %d", uri->port); |
00e2e675 DG |
736 | break; |
737 | default: | |
738 | ERR("Set network uri type unknown %d", uri->stype); | |
a74934ba | 739 | ret = -LTTNG_ERR_INVALID; |
00e2e675 DG |
740 | goto error; |
741 | } | |
742 | ||
743 | ret = uri_compare(dst_uri, uri); | |
744 | if (!ret) { | |
745 | /* Same URI, don't touch it and return success. */ | |
746 | DBG3("URI network compare are the same"); | |
ad20f474 | 747 | goto equal; |
00e2e675 DG |
748 | } |
749 | ||
750 | /* URIs were not equal, replacing it. */ | |
00e2e675 | 751 | memcpy(dst_uri, uri, sizeof(struct lttng_uri)); |
b178f53e JG |
752 | output->type = CONSUMER_DST_NET; |
753 | if (dst_uri->stype != LTTNG_STREAM_CONTROL) { | |
754 | /* Only the control uri needs to contain the path. */ | |
755 | goto end; | |
756 | } | |
00e2e675 | 757 | |
b178f53e JG |
758 | /* |
759 | * If the user has specified a subdir as part of the control | |
760 | * URL, the session's base output directory is: | |
761 | * /RELAYD_OUTPUT_PATH/HOSTNAME/USER_SPECIFIED_DIR | |
762 | * | |
763 | * Hence, the "base_dir" from which all stream files and | |
764 | * session rotation chunks are created takes the form | |
765 | * /HOSTNAME/USER_SPECIFIED_DIR | |
766 | * | |
767 | * If the user has not specified an output directory as part of | |
768 | * the control URL, the base output directory has the form: | |
769 | * /RELAYD_OUTPUT_PATH/HOSTNAME/SESSION_NAME-CREATION_TIME | |
770 | * | |
771 | * Hence, the "base_dir" from which all stream files and | |
772 | * session rotation chunks are created takes the form | |
773 | * /HOSTNAME/SESSION_NAME-CREATION_TIME | |
774 | * | |
775 | * Note that automatically generated session names already | |
776 | * contain the session's creation time. In that case, the | |
777 | * creation time is omitted to prevent it from being duplicated | |
778 | * in the final directory hierarchy. | |
779 | */ | |
780 | if (*uri->subdir) { | |
781 | if (strstr(uri->subdir, "../")) { | |
782 | ERR("Network URI subdirs are not allowed to walk up the path hierarchy"); | |
783 | ret = -LTTNG_ERR_INVALID; | |
00e2e675 DG |
784 | goto error; |
785 | } | |
b178f53e JG |
786 | ret = snprintf(output->dst.net.base_dir, |
787 | sizeof(output->dst.net.base_dir), | |
788 | "/%s/%s/", session->hostname, uri->subdir); | |
789 | } else { | |
790 | if (session->has_auto_generated_name) { | |
791 | ret = snprintf(output->dst.net.base_dir, | |
792 | sizeof(output->dst.net.base_dir), | |
793 | "/%s/%s/", session->hostname, | |
794 | session->name); | |
795 | } else { | |
796 | char session_creation_datetime[16]; | |
797 | size_t strftime_ret; | |
798 | struct tm *timeinfo; | |
00e2e675 | 799 | |
b178f53e JG |
800 | timeinfo = localtime(&session->creation_time); |
801 | if (!timeinfo) { | |
802 | ret = -LTTNG_ERR_FATAL; | |
803 | goto error; | |
804 | } | |
805 | strftime_ret = strftime(session_creation_datetime, | |
806 | sizeof(session_creation_datetime), | |
807 | "%Y%m%d-%H%M%S", timeinfo); | |
808 | if (strftime_ret == 0) { | |
809 | ERR("Failed to format session creation timestamp while setting network URI"); | |
810 | ret = -LTTNG_ERR_FATAL; | |
811 | goto error; | |
812 | } | |
813 | ret = snprintf(output->dst.net.base_dir, | |
814 | sizeof(output->dst.net.base_dir), | |
815 | "/%s/%s-%s/", session->hostname, | |
816 | session->name, | |
817 | session_creation_datetime); | |
bfc6eff0 | 818 | } |
00e2e675 | 819 | } |
b178f53e JG |
820 | if (ret >= sizeof(output->dst.net.base_dir)) { |
821 | ret = -LTTNG_ERR_INVALID; | |
822 | ERR("Truncation occurred while setting network output base directory"); | |
823 | goto error; | |
824 | } else if (ret == -1) { | |
825 | ret = -LTTNG_ERR_INVALID; | |
826 | PERROR("Error occurred while setting network output base directory"); | |
827 | goto error; | |
828 | } | |
829 | ||
830 | DBG3("Consumer set network uri base_dir path %s", | |
831 | output->dst.net.base_dir); | |
00e2e675 | 832 | |
b178f53e | 833 | end: |
00e2e675 | 834 | return 0; |
ad20f474 DG |
835 | equal: |
836 | return 1; | |
00e2e675 | 837 | error: |
a74934ba | 838 | return ret; |
00e2e675 DG |
839 | } |
840 | ||
841 | /* | |
842 | * Send file descriptor to consumer via sock. | |
9a318688 JG |
843 | * |
844 | * The consumer socket lock must be held by the caller. | |
00e2e675 | 845 | */ |
ac2f30af JG |
846 | int consumer_send_fds(struct consumer_socket *sock, const int *fds, |
847 | size_t nb_fd) | |
00e2e675 DG |
848 | { |
849 | int ret; | |
850 | ||
851 | assert(fds); | |
f50f23d9 | 852 | assert(sock); |
00e2e675 | 853 | assert(nb_fd > 0); |
05dac598 | 854 | assert(pthread_mutex_trylock(sock->lock) == EBUSY); |
00e2e675 | 855 | |
9363801e | 856 | ret = lttcomm_send_fds_unix_sock(*sock->fd_ptr, fds, nb_fd); |
00e2e675 | 857 | if (ret < 0) { |
3448e266 | 858 | /* The above call will print a PERROR on error. */ |
9363801e | 859 | DBG("Error when sending consumer fds on sock %d", *sock->fd_ptr); |
00e2e675 DG |
860 | goto error; |
861 | } | |
862 | ||
f50f23d9 | 863 | ret = consumer_recv_status_reply(sock); |
00e2e675 DG |
864 | error: |
865 | return ret; | |
866 | } | |
867 | ||
ffe60014 DG |
868 | /* |
869 | * Consumer send communication message structure to consumer. | |
9a318688 JG |
870 | * |
871 | * The consumer socket lock must be held by the caller. | |
ffe60014 DG |
872 | */ |
873 | int consumer_send_msg(struct consumer_socket *sock, | |
874 | struct lttcomm_consumer_msg *msg) | |
875 | { | |
876 | int ret; | |
877 | ||
878 | assert(msg); | |
879 | assert(sock); | |
211b734b | 880 | assert(pthread_mutex_trylock(sock->lock) == EBUSY); |
ffe60014 | 881 | |
52898cb1 | 882 | ret = consumer_socket_send(sock, msg, sizeof(struct lttcomm_consumer_msg)); |
ffe60014 | 883 | if (ret < 0) { |
ffe60014 DG |
884 | goto error; |
885 | } | |
886 | ||
887 | ret = consumer_recv_status_reply(sock); | |
888 | ||
889 | error: | |
890 | return ret; | |
891 | } | |
892 | ||
00e2e675 DG |
893 | /* |
894 | * Consumer send channel communication message structure to consumer. | |
9a318688 JG |
895 | * |
896 | * The consumer socket lock must be held by the caller. | |
00e2e675 | 897 | */ |
f50f23d9 DG |
898 | int consumer_send_channel(struct consumer_socket *sock, |
899 | struct lttcomm_consumer_msg *msg) | |
00e2e675 DG |
900 | { |
901 | int ret; | |
902 | ||
903 | assert(msg); | |
f50f23d9 | 904 | assert(sock); |
00e2e675 | 905 | |
52898cb1 | 906 | ret = consumer_send_msg(sock, msg); |
00e2e675 | 907 | if (ret < 0) { |
00e2e675 DG |
908 | goto error; |
909 | } | |
910 | ||
911 | error: | |
912 | return ret; | |
913 | } | |
914 | ||
ffe60014 DG |
915 | /* |
916 | * Populate the given consumer msg structure with the ask_channel command | |
917 | * information. | |
918 | */ | |
919 | void consumer_init_ask_channel_comm_msg(struct lttcomm_consumer_msg *msg, | |
920 | uint64_t subbuf_size, | |
921 | uint64_t num_subbuf, | |
922 | int overwrite, | |
923 | unsigned int switch_timer_interval, | |
924 | unsigned int read_timer_interval, | |
ecc48a90 | 925 | unsigned int live_timer_interval, |
e9404c27 | 926 | unsigned int monitor_timer_interval, |
ffe60014 DG |
927 | int output, |
928 | int type, | |
929 | uint64_t session_id, | |
930 | const char *pathname, | |
931 | const char *name, | |
d88aee68 DG |
932 | uint64_t relayd_id, |
933 | uint64_t key, | |
7972aab2 | 934 | unsigned char *uuid, |
1624d5b7 JD |
935 | uint32_t chan_id, |
936 | uint64_t tracefile_size, | |
2bba9e53 | 937 | uint64_t tracefile_count, |
1950109e | 938 | uint64_t session_id_per_pid, |
567eb353 | 939 | unsigned int monitor, |
d7ba1388 | 940 | uint32_t ust_app_uid, |
491d1539 | 941 | int64_t blocking_timeout, |
3d071855 | 942 | const char *root_shm_path, |
e098433c | 943 | const char *shm_path, |
1b0bebcb JG |
944 | struct lttng_trace_chunk *trace_chunk, |
945 | const struct lttng_credentials *buffer_credentials) | |
ffe60014 DG |
946 | { |
947 | assert(msg); | |
948 | ||
d2956687 | 949 | /* Zeroed structure */ |
ffe60014 | 950 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); |
d2956687 JG |
951 | msg->u.ask_channel.buffer_credentials.uid = UINT32_MAX; |
952 | msg->u.ask_channel.buffer_credentials.gid = UINT32_MAX; | |
953 | ||
d2956687 JG |
954 | if (trace_chunk) { |
955 | uint64_t chunk_id; | |
956 | enum lttng_trace_chunk_status chunk_status; | |
d2956687 JG |
957 | |
958 | chunk_status = lttng_trace_chunk_get_id(trace_chunk, &chunk_id); | |
959 | assert(chunk_status == LTTNG_TRACE_CHUNK_STATUS_OK); | |
960 | LTTNG_OPTIONAL_SET(&msg->u.ask_channel.chunk_id, chunk_id); | |
d2956687 | 961 | } |
1b0bebcb JG |
962 | msg->u.ask_channel.buffer_credentials.uid = buffer_credentials->uid; |
963 | msg->u.ask_channel.buffer_credentials.gid = buffer_credentials->gid; | |
ffe60014 DG |
964 | |
965 | msg->cmd_type = LTTNG_CONSUMER_ASK_CHANNEL_CREATION; | |
966 | msg->u.ask_channel.subbuf_size = subbuf_size; | |
967 | msg->u.ask_channel.num_subbuf = num_subbuf ; | |
968 | msg->u.ask_channel.overwrite = overwrite; | |
969 | msg->u.ask_channel.switch_timer_interval = switch_timer_interval; | |
970 | msg->u.ask_channel.read_timer_interval = read_timer_interval; | |
ecc48a90 | 971 | msg->u.ask_channel.live_timer_interval = live_timer_interval; |
e9404c27 | 972 | msg->u.ask_channel.monitor_timer_interval = monitor_timer_interval; |
ffe60014 DG |
973 | msg->u.ask_channel.output = output; |
974 | msg->u.ask_channel.type = type; | |
975 | msg->u.ask_channel.session_id = session_id; | |
1950109e | 976 | msg->u.ask_channel.session_id_per_pid = session_id_per_pid; |
ffe60014 DG |
977 | msg->u.ask_channel.relayd_id = relayd_id; |
978 | msg->u.ask_channel.key = key; | |
7972aab2 | 979 | msg->u.ask_channel.chan_id = chan_id; |
1624d5b7 JD |
980 | msg->u.ask_channel.tracefile_size = tracefile_size; |
981 | msg->u.ask_channel.tracefile_count = tracefile_count; | |
2bba9e53 | 982 | msg->u.ask_channel.monitor = monitor; |
567eb353 | 983 | msg->u.ask_channel.ust_app_uid = ust_app_uid; |
491d1539 | 984 | msg->u.ask_channel.blocking_timeout = blocking_timeout; |
ffe60014 DG |
985 | |
986 | memcpy(msg->u.ask_channel.uuid, uuid, sizeof(msg->u.ask_channel.uuid)); | |
987 | ||
10a50311 JD |
988 | if (pathname) { |
989 | strncpy(msg->u.ask_channel.pathname, pathname, | |
990 | sizeof(msg->u.ask_channel.pathname)); | |
991 | msg->u.ask_channel.pathname[sizeof(msg->u.ask_channel.pathname)-1] = '\0'; | |
992 | } | |
ffe60014 DG |
993 | |
994 | strncpy(msg->u.ask_channel.name, name, sizeof(msg->u.ask_channel.name)); | |
995 | msg->u.ask_channel.name[sizeof(msg->u.ask_channel.name) - 1] = '\0'; | |
d7ba1388 | 996 | |
3d071855 MD |
997 | if (root_shm_path) { |
998 | strncpy(msg->u.ask_channel.root_shm_path, root_shm_path, | |
999 | sizeof(msg->u.ask_channel.root_shm_path)); | |
1000 | msg->u.ask_channel.root_shm_path[sizeof(msg->u.ask_channel.root_shm_path) - 1] = '\0'; | |
1001 | } | |
d7ba1388 MD |
1002 | if (shm_path) { |
1003 | strncpy(msg->u.ask_channel.shm_path, shm_path, | |
1004 | sizeof(msg->u.ask_channel.shm_path)); | |
1005 | msg->u.ask_channel.shm_path[sizeof(msg->u.ask_channel.shm_path) - 1] = '\0'; | |
1006 | } | |
ffe60014 DG |
1007 | } |
1008 | ||
00e2e675 DG |
1009 | /* |
1010 | * Init channel communication message structure. | |
1011 | */ | |
638e7b4e | 1012 | void consumer_init_add_channel_comm_msg(struct lttcomm_consumer_msg *msg, |
d88aee68 | 1013 | uint64_t channel_key, |
ffe60014 DG |
1014 | uint64_t session_id, |
1015 | const char *pathname, | |
1016 | uid_t uid, | |
1017 | gid_t gid, | |
d88aee68 | 1018 | uint64_t relayd_id, |
c30aaa51 | 1019 | const char *name, |
ffe60014 DG |
1020 | unsigned int nb_init_streams, |
1021 | enum lttng_event_output output, | |
1624d5b7 JD |
1022 | int type, |
1023 | uint64_t tracefile_size, | |
2bba9e53 | 1024 | uint64_t tracefile_count, |
ecc48a90 | 1025 | unsigned int monitor, |
e9404c27 | 1026 | unsigned int live_timer_interval, |
d2956687 JG |
1027 | unsigned int monitor_timer_interval, |
1028 | struct lttng_trace_chunk *trace_chunk) | |
00e2e675 DG |
1029 | { |
1030 | assert(msg); | |
1031 | ||
00e2e675 DG |
1032 | /* Zeroed structure */ |
1033 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
1034 | ||
d2956687 JG |
1035 | if (trace_chunk) { |
1036 | uint64_t chunk_id; | |
1037 | enum lttng_trace_chunk_status chunk_status; | |
1038 | ||
1039 | chunk_status = lttng_trace_chunk_get_id(trace_chunk, &chunk_id); | |
1040 | assert(chunk_status == LTTNG_TRACE_CHUNK_STATUS_OK); | |
1041 | LTTNG_OPTIONAL_SET(&msg->u.channel.chunk_id, chunk_id); | |
1042 | } | |
1043 | ||
00e2e675 | 1044 | /* Send channel */ |
638e7b4e | 1045 | msg->cmd_type = LTTNG_CONSUMER_ADD_CHANNEL; |
00e2e675 | 1046 | msg->u.channel.channel_key = channel_key; |
ffe60014 | 1047 | msg->u.channel.session_id = session_id; |
ffe60014 | 1048 | msg->u.channel.relayd_id = relayd_id; |
c30aaa51 | 1049 | msg->u.channel.nb_init_streams = nb_init_streams; |
ffe60014 DG |
1050 | msg->u.channel.output = output; |
1051 | msg->u.channel.type = type; | |
1624d5b7 JD |
1052 | msg->u.channel.tracefile_size = tracefile_size; |
1053 | msg->u.channel.tracefile_count = tracefile_count; | |
2bba9e53 | 1054 | msg->u.channel.monitor = monitor; |
ecc48a90 | 1055 | msg->u.channel.live_timer_interval = live_timer_interval; |
e9404c27 | 1056 | msg->u.channel.monitor_timer_interval = monitor_timer_interval; |
ffe60014 DG |
1057 | |
1058 | strncpy(msg->u.channel.pathname, pathname, | |
1059 | sizeof(msg->u.channel.pathname)); | |
1060 | msg->u.channel.pathname[sizeof(msg->u.channel.pathname) - 1] = '\0'; | |
1061 | ||
1062 | strncpy(msg->u.channel.name, name, sizeof(msg->u.channel.name)); | |
1063 | msg->u.channel.name[sizeof(msg->u.channel.name) - 1] = '\0'; | |
00e2e675 DG |
1064 | } |
1065 | ||
1066 | /* | |
1067 | * Init stream communication message structure. | |
1068 | */ | |
e098433c | 1069 | void consumer_init_add_stream_comm_msg(struct lttcomm_consumer_msg *msg, |
d88aee68 DG |
1070 | uint64_t channel_key, |
1071 | uint64_t stream_key, | |
d2956687 | 1072 | int32_t cpu) |
00e2e675 DG |
1073 | { |
1074 | assert(msg); | |
1075 | ||
1076 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
1077 | ||
e098433c | 1078 | msg->cmd_type = LTTNG_CONSUMER_ADD_STREAM; |
00e2e675 DG |
1079 | msg->u.stream.channel_key = channel_key; |
1080 | msg->u.stream.stream_key = stream_key; | |
ffe60014 | 1081 | msg->u.stream.cpu = cpu; |
00e2e675 DG |
1082 | } |
1083 | ||
a4baae1b JD |
1084 | void consumer_init_streams_sent_comm_msg(struct lttcomm_consumer_msg *msg, |
1085 | enum lttng_consumer_command cmd, | |
1086 | uint64_t channel_key, uint64_t net_seq_idx) | |
1087 | { | |
1088 | assert(msg); | |
1089 | ||
1090 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
1091 | ||
1092 | msg->cmd_type = cmd; | |
1093 | msg->u.sent_streams.channel_key = channel_key; | |
1094 | msg->u.sent_streams.net_seq_idx = net_seq_idx; | |
1095 | } | |
1096 | ||
00e2e675 DG |
1097 | /* |
1098 | * Send stream communication structure to the consumer. | |
1099 | */ | |
f50f23d9 DG |
1100 | int consumer_send_stream(struct consumer_socket *sock, |
1101 | struct consumer_output *dst, struct lttcomm_consumer_msg *msg, | |
ac2f30af | 1102 | const int *fds, size_t nb_fd) |
00e2e675 DG |
1103 | { |
1104 | int ret; | |
1105 | ||
1106 | assert(msg); | |
1107 | assert(dst); | |
f50f23d9 | 1108 | assert(sock); |
ffe60014 | 1109 | assert(fds); |
00e2e675 | 1110 | |
52898cb1 | 1111 | ret = consumer_send_msg(sock, msg); |
f50f23d9 DG |
1112 | if (ret < 0) { |
1113 | goto error; | |
1114 | } | |
1115 | ||
00e2e675 DG |
1116 | ret = consumer_send_fds(sock, fds, nb_fd); |
1117 | if (ret < 0) { | |
1118 | goto error; | |
1119 | } | |
1120 | ||
1121 | error: | |
1122 | return ret; | |
1123 | } | |
37278a1e DG |
1124 | |
1125 | /* | |
1126 | * Send relayd socket to consumer associated with a session name. | |
1127 | * | |
43fade62 JG |
1128 | * The consumer socket lock must be held by the caller. |
1129 | * | |
37278a1e DG |
1130 | * On success return positive value. On error, negative value. |
1131 | */ | |
f50f23d9 | 1132 | int consumer_send_relayd_socket(struct consumer_socket *consumer_sock, |
6151a90f | 1133 | struct lttcomm_relayd_sock *rsock, struct consumer_output *consumer, |
d3e2ba59 | 1134 | enum lttng_stream_type type, uint64_t session_id, |
fb9a95c4 | 1135 | const char *session_name, const char *hostname, |
6fa5fe7c | 1136 | const char *base_path, int session_live_timer, |
46ef2188 MD |
1137 | const uint64_t *current_chunk_id, time_t session_creation_time, |
1138 | bool session_name_contains_creation_time) | |
37278a1e DG |
1139 | { |
1140 | int ret; | |
1141 | struct lttcomm_consumer_msg msg; | |
1142 | ||
1143 | /* Code flow error. Safety net. */ | |
6151a90f | 1144 | assert(rsock); |
37278a1e | 1145 | assert(consumer); |
f50f23d9 | 1146 | assert(consumer_sock); |
37278a1e | 1147 | |
53efb85a | 1148 | memset(&msg, 0, sizeof(msg)); |
37278a1e DG |
1149 | /* Bail out if consumer is disabled */ |
1150 | if (!consumer->enabled) { | |
f73fabfd | 1151 | ret = LTTNG_OK; |
37278a1e DG |
1152 | goto error; |
1153 | } | |
1154 | ||
d3e2ba59 | 1155 | if (type == LTTNG_STREAM_CONTROL) { |
ecd1a12f | 1156 | char output_path[LTTNG_PATH_MAX] = {}; |
07aa2e42 | 1157 | uint64_t relayd_session_id; |
ecd1a12f | 1158 | |
d3e2ba59 | 1159 | ret = relayd_create_session(rsock, |
07aa2e42 | 1160 | &relayd_session_id, |
6fa5fe7c MD |
1161 | session_name, hostname, base_path, |
1162 | session_live_timer, | |
658f12fa | 1163 | consumer->snapshot, session_id, |
db1da059 | 1164 | sessiond_uuid, current_chunk_id, |
46ef2188 | 1165 | session_creation_time, |
ecd1a12f MD |
1166 | session_name_contains_creation_time, |
1167 | output_path); | |
d3e2ba59 JD |
1168 | if (ret < 0) { |
1169 | /* Close the control socket. */ | |
1170 | (void) relayd_close(rsock); | |
1171 | goto error; | |
1172 | } | |
07aa2e42 | 1173 | msg.u.relayd_sock.relayd_session_id = relayd_session_id; |
ecd1a12f MD |
1174 | DBG("Created session on relay, output path reply: %s", |
1175 | output_path); | |
d3e2ba59 JD |
1176 | } |
1177 | ||
37278a1e DG |
1178 | msg.cmd_type = LTTNG_CONSUMER_ADD_RELAYD_SOCKET; |
1179 | /* | |
1180 | * Assign network consumer output index using the temporary consumer since | |
1181 | * this call should only be made from within a set_consumer_uri() function | |
1182 | * call in the session daemon. | |
1183 | */ | |
1184 | msg.u.relayd_sock.net_index = consumer->net_seq_index; | |
1185 | msg.u.relayd_sock.type = type; | |
46e6455f | 1186 | msg.u.relayd_sock.session_id = session_id; |
6151a90f | 1187 | memcpy(&msg.u.relayd_sock.sock, rsock, sizeof(msg.u.relayd_sock.sock)); |
37278a1e | 1188 | |
9363801e | 1189 | DBG3("Sending relayd sock info to consumer on %d", *consumer_sock->fd_ptr); |
52898cb1 | 1190 | ret = consumer_send_msg(consumer_sock, &msg); |
f50f23d9 DG |
1191 | if (ret < 0) { |
1192 | goto error; | |
1193 | } | |
1194 | ||
37278a1e | 1195 | DBG3("Sending relayd socket file descriptor to consumer"); |
f712d514 | 1196 | ret = consumer_send_fds(consumer_sock, ALIGNED_CONST_PTR(rsock->sock.fd), 1); |
37278a1e DG |
1197 | if (ret < 0) { |
1198 | goto error; | |
1199 | } | |
1200 | ||
1201 | DBG2("Consumer relayd socket sent"); | |
1202 | ||
1203 | error: | |
1204 | return ret; | |
1205 | } | |
173af62f | 1206 | |
62c43103 JD |
1207 | static |
1208 | int consumer_send_pipe(struct consumer_socket *consumer_sock, | |
1209 | enum lttng_consumer_command cmd, int pipe) | |
e9404c27 JG |
1210 | { |
1211 | int ret; | |
1212 | struct lttcomm_consumer_msg msg; | |
62c43103 JD |
1213 | const char *pipe_name; |
1214 | const char *command_name; | |
1215 | ||
1216 | switch (cmd) { | |
1217 | case LTTNG_CONSUMER_SET_CHANNEL_MONITOR_PIPE: | |
1218 | pipe_name = "channel monitor"; | |
1219 | command_name = "SET_CHANNEL_MONITOR_PIPE"; | |
1220 | break; | |
62c43103 JD |
1221 | default: |
1222 | ERR("Unexpected command received in %s (cmd = %d)", __func__, | |
1223 | (int) cmd); | |
1224 | abort(); | |
1225 | } | |
e9404c27 JG |
1226 | |
1227 | /* Code flow error. Safety net. */ | |
1228 | ||
1229 | memset(&msg, 0, sizeof(msg)); | |
62c43103 | 1230 | msg.cmd_type = cmd; |
e9404c27 | 1231 | |
3e4dc117 | 1232 | pthread_mutex_lock(consumer_sock->lock); |
62c43103 | 1233 | DBG3("Sending %s command to consumer", command_name); |
e9404c27 JG |
1234 | ret = consumer_send_msg(consumer_sock, &msg); |
1235 | if (ret < 0) { | |
1236 | goto error; | |
1237 | } | |
1238 | ||
62c43103 JD |
1239 | DBG3("Sending %s pipe %d to consumer on socket %d", |
1240 | pipe_name, | |
e9404c27 JG |
1241 | pipe, *consumer_sock->fd_ptr); |
1242 | ret = consumer_send_fds(consumer_sock, &pipe, 1); | |
1243 | if (ret < 0) { | |
1244 | goto error; | |
1245 | } | |
1246 | ||
62c43103 | 1247 | DBG2("%s pipe successfully sent", pipe_name); |
e9404c27 | 1248 | error: |
3e4dc117 | 1249 | pthread_mutex_unlock(consumer_sock->lock); |
e9404c27 JG |
1250 | return ret; |
1251 | } | |
1252 | ||
62c43103 JD |
1253 | int consumer_send_channel_monitor_pipe(struct consumer_socket *consumer_sock, |
1254 | int pipe) | |
1255 | { | |
1256 | return consumer_send_pipe(consumer_sock, | |
1257 | LTTNG_CONSUMER_SET_CHANNEL_MONITOR_PIPE, pipe); | |
1258 | } | |
1259 | ||
806e2684 | 1260 | /* |
5e280d77 MD |
1261 | * Ask the consumer if the data is pending for the specific session id. |
1262 | * Returns 1 if data is pending, 0 otherwise, or < 0 on error. | |
806e2684 | 1263 | */ |
d88aee68 | 1264 | int consumer_is_data_pending(uint64_t session_id, |
806e2684 DG |
1265 | struct consumer_output *consumer) |
1266 | { | |
1267 | int ret; | |
6d805429 | 1268 | int32_t ret_code = 0; /* Default is that the data is NOT pending */ |
806e2684 DG |
1269 | struct consumer_socket *socket; |
1270 | struct lttng_ht_iter iter; | |
1271 | struct lttcomm_consumer_msg msg; | |
1272 | ||
1273 | assert(consumer); | |
1274 | ||
53efb85a | 1275 | DBG3("Consumer data pending for id %" PRIu64, session_id); |
806e2684 | 1276 | |
53efb85a MD |
1277 | memset(&msg, 0, sizeof(msg)); |
1278 | msg.cmd_type = LTTNG_CONSUMER_DATA_PENDING; | |
d88aee68 | 1279 | msg.u.data_pending.session_id = session_id; |
806e2684 | 1280 | |
c8f59ee5 | 1281 | /* Send command for each consumer */ |
b82c5c4d | 1282 | rcu_read_lock(); |
806e2684 DG |
1283 | cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket, |
1284 | node.node) { | |
806e2684 | 1285 | pthread_mutex_lock(socket->lock); |
52898cb1 | 1286 | ret = consumer_socket_send(socket, &msg, sizeof(msg)); |
806e2684 | 1287 | if (ret < 0) { |
806e2684 | 1288 | pthread_mutex_unlock(socket->lock); |
b82c5c4d | 1289 | goto error_unlock; |
806e2684 DG |
1290 | } |
1291 | ||
f50f23d9 DG |
1292 | /* |
1293 | * No need for a recv reply status because the answer to the command is | |
1294 | * the reply status message. | |
1295 | */ | |
1296 | ||
52898cb1 DG |
1297 | ret = consumer_socket_recv(socket, &ret_code, sizeof(ret_code)); |
1298 | if (ret < 0) { | |
806e2684 | 1299 | pthread_mutex_unlock(socket->lock); |
b82c5c4d | 1300 | goto error_unlock; |
806e2684 | 1301 | } |
806e2684 DG |
1302 | pthread_mutex_unlock(socket->lock); |
1303 | ||
6d805429 | 1304 | if (ret_code == 1) { |
806e2684 DG |
1305 | break; |
1306 | } | |
1307 | } | |
b82c5c4d | 1308 | rcu_read_unlock(); |
806e2684 | 1309 | |
d88aee68 DG |
1310 | DBG("Consumer data is %s pending for session id %" PRIu64, |
1311 | ret_code == 1 ? "" : "NOT", session_id); | |
806e2684 DG |
1312 | return ret_code; |
1313 | ||
b82c5c4d DG |
1314 | error_unlock: |
1315 | rcu_read_unlock(); | |
806e2684 DG |
1316 | return -1; |
1317 | } | |
7972aab2 DG |
1318 | |
1319 | /* | |
1320 | * Send a flush command to consumer using the given channel key. | |
1321 | * | |
1322 | * Return 0 on success else a negative value. | |
1323 | */ | |
1324 | int consumer_flush_channel(struct consumer_socket *socket, uint64_t key) | |
1325 | { | |
1326 | int ret; | |
1327 | struct lttcomm_consumer_msg msg; | |
1328 | ||
1329 | assert(socket); | |
7972aab2 DG |
1330 | |
1331 | DBG2("Consumer flush channel key %" PRIu64, key); | |
1332 | ||
53efb85a | 1333 | memset(&msg, 0, sizeof(msg)); |
7972aab2 DG |
1334 | msg.cmd_type = LTTNG_CONSUMER_FLUSH_CHANNEL; |
1335 | msg.u.flush_channel.key = key; | |
1336 | ||
1337 | pthread_mutex_lock(socket->lock); | |
1338 | health_code_update(); | |
1339 | ||
1340 | ret = consumer_send_msg(socket, &msg); | |
1341 | if (ret < 0) { | |
1342 | goto end; | |
1343 | } | |
1344 | ||
1345 | end: | |
1346 | health_code_update(); | |
1347 | pthread_mutex_unlock(socket->lock); | |
1348 | return ret; | |
1349 | } | |
1350 | ||
0dd01979 MD |
1351 | /* |
1352 | * Send a clear quiescent command to consumer using the given channel key. | |
1353 | * | |
1354 | * Return 0 on success else a negative value. | |
1355 | */ | |
1356 | int consumer_clear_quiescent_channel(struct consumer_socket *socket, uint64_t key) | |
1357 | { | |
1358 | int ret; | |
1359 | struct lttcomm_consumer_msg msg; | |
1360 | ||
1361 | assert(socket); | |
1362 | ||
1363 | DBG2("Consumer clear quiescent channel key %" PRIu64, key); | |
1364 | ||
1365 | memset(&msg, 0, sizeof(msg)); | |
1366 | msg.cmd_type = LTTNG_CONSUMER_CLEAR_QUIESCENT_CHANNEL; | |
1367 | msg.u.clear_quiescent_channel.key = key; | |
1368 | ||
1369 | pthread_mutex_lock(socket->lock); | |
1370 | health_code_update(); | |
1371 | ||
1372 | ret = consumer_send_msg(socket, &msg); | |
1373 | if (ret < 0) { | |
1374 | goto end; | |
1375 | } | |
1376 | ||
1377 | end: | |
1378 | health_code_update(); | |
1379 | pthread_mutex_unlock(socket->lock); | |
1380 | return ret; | |
1381 | } | |
1382 | ||
7972aab2 | 1383 | /* |
dc2bbdae MD |
1384 | * Send a close metadata command to consumer using the given channel key. |
1385 | * Called with registry lock held. | |
7972aab2 DG |
1386 | * |
1387 | * Return 0 on success else a negative value. | |
1388 | */ | |
1389 | int consumer_close_metadata(struct consumer_socket *socket, | |
1390 | uint64_t metadata_key) | |
1391 | { | |
1392 | int ret; | |
1393 | struct lttcomm_consumer_msg msg; | |
1394 | ||
1395 | assert(socket); | |
7972aab2 DG |
1396 | |
1397 | DBG2("Consumer close metadata channel key %" PRIu64, metadata_key); | |
1398 | ||
53efb85a | 1399 | memset(&msg, 0, sizeof(msg)); |
7972aab2 DG |
1400 | msg.cmd_type = LTTNG_CONSUMER_CLOSE_METADATA; |
1401 | msg.u.close_metadata.key = metadata_key; | |
1402 | ||
1403 | pthread_mutex_lock(socket->lock); | |
1404 | health_code_update(); | |
1405 | ||
1406 | ret = consumer_send_msg(socket, &msg); | |
1407 | if (ret < 0) { | |
1408 | goto end; | |
1409 | } | |
1410 | ||
1411 | end: | |
1412 | health_code_update(); | |
1413 | pthread_mutex_unlock(socket->lock); | |
1414 | return ret; | |
1415 | } | |
1416 | ||
1417 | /* | |
1418 | * Send a setup metdata command to consumer using the given channel key. | |
1419 | * | |
1420 | * Return 0 on success else a negative value. | |
1421 | */ | |
1422 | int consumer_setup_metadata(struct consumer_socket *socket, | |
1423 | uint64_t metadata_key) | |
1424 | { | |
1425 | int ret; | |
1426 | struct lttcomm_consumer_msg msg; | |
1427 | ||
1428 | assert(socket); | |
7972aab2 DG |
1429 | |
1430 | DBG2("Consumer setup metadata channel key %" PRIu64, metadata_key); | |
1431 | ||
53efb85a | 1432 | memset(&msg, 0, sizeof(msg)); |
7972aab2 DG |
1433 | msg.cmd_type = LTTNG_CONSUMER_SETUP_METADATA; |
1434 | msg.u.setup_metadata.key = metadata_key; | |
1435 | ||
1436 | pthread_mutex_lock(socket->lock); | |
1437 | health_code_update(); | |
1438 | ||
1439 | ret = consumer_send_msg(socket, &msg); | |
1440 | if (ret < 0) { | |
1441 | goto end; | |
1442 | } | |
1443 | ||
1444 | end: | |
1445 | health_code_update(); | |
1446 | pthread_mutex_unlock(socket->lock); | |
1447 | return ret; | |
1448 | } | |
1449 | ||
1450 | /* | |
dc2bbdae MD |
1451 | * Send metadata string to consumer. |
1452 | * RCU read-side lock must be held to guarantee existence of socket. | |
7972aab2 DG |
1453 | * |
1454 | * Return 0 on success else a negative value. | |
1455 | */ | |
1456 | int consumer_push_metadata(struct consumer_socket *socket, | |
1457 | uint64_t metadata_key, char *metadata_str, size_t len, | |
93ec662e | 1458 | size_t target_offset, uint64_t version) |
7972aab2 DG |
1459 | { |
1460 | int ret; | |
1461 | struct lttcomm_consumer_msg msg; | |
1462 | ||
1463 | assert(socket); | |
7972aab2 | 1464 | |
9363801e | 1465 | DBG2("Consumer push metadata to consumer socket %d", *socket->fd_ptr); |
7972aab2 | 1466 | |
dc2bbdae MD |
1467 | pthread_mutex_lock(socket->lock); |
1468 | ||
53efb85a | 1469 | memset(&msg, 0, sizeof(msg)); |
7972aab2 DG |
1470 | msg.cmd_type = LTTNG_CONSUMER_PUSH_METADATA; |
1471 | msg.u.push_metadata.key = metadata_key; | |
1472 | msg.u.push_metadata.target_offset = target_offset; | |
1473 | msg.u.push_metadata.len = len; | |
93ec662e | 1474 | msg.u.push_metadata.version = version; |
7972aab2 | 1475 | |
7972aab2 DG |
1476 | health_code_update(); |
1477 | ret = consumer_send_msg(socket, &msg); | |
331744e3 | 1478 | if (ret < 0 || len == 0) { |
7972aab2 DG |
1479 | goto end; |
1480 | } | |
1481 | ||
9363801e DG |
1482 | DBG3("Consumer pushing metadata on sock %d of len %zu", *socket->fd_ptr, |
1483 | len); | |
7972aab2 | 1484 | |
52898cb1 | 1485 | ret = consumer_socket_send(socket, metadata_str, len); |
7972aab2 DG |
1486 | if (ret < 0) { |
1487 | goto end; | |
1488 | } | |
1489 | ||
1490 | health_code_update(); | |
1491 | ret = consumer_recv_status_reply(socket); | |
1492 | if (ret < 0) { | |
1493 | goto end; | |
1494 | } | |
1495 | ||
1496 | end: | |
dc2bbdae | 1497 | pthread_mutex_unlock(socket->lock); |
7972aab2 | 1498 | health_code_update(); |
7972aab2 DG |
1499 | return ret; |
1500 | } | |
6dc3064a DG |
1501 | |
1502 | /* | |
1503 | * Ask the consumer to snapshot a specific channel using the key. | |
1504 | * | |
9a654598 | 1505 | * Returns LTTNG_OK on success or else an LTTng error code. |
6dc3064a | 1506 | */ |
9a654598 | 1507 | enum lttng_error_code consumer_snapshot_channel(struct consumer_socket *socket, |
348a81dc | 1508 | uint64_t key, const struct consumer_output *output, int metadata, |
d2956687 JG |
1509 | uid_t uid, gid_t gid, const char *channel_path, int wait, |
1510 | uint64_t nb_packets_per_stream) | |
6dc3064a DG |
1511 | { |
1512 | int ret; | |
9a654598 | 1513 | enum lttng_error_code status = LTTNG_OK; |
6dc3064a DG |
1514 | struct lttcomm_consumer_msg msg; |
1515 | ||
1516 | assert(socket); | |
6dc3064a | 1517 | assert(output); |
6dc3064a DG |
1518 | |
1519 | DBG("Consumer snapshot channel key %" PRIu64, key); | |
1520 | ||
ee91bab2 | 1521 | memset(&msg, 0, sizeof(msg)); |
6dc3064a DG |
1522 | msg.cmd_type = LTTNG_CONSUMER_SNAPSHOT_CHANNEL; |
1523 | msg.u.snapshot_channel.key = key; | |
d07ceecd | 1524 | msg.u.snapshot_channel.nb_packets_per_stream = nb_packets_per_stream; |
6dc3064a DG |
1525 | msg.u.snapshot_channel.metadata = metadata; |
1526 | ||
348a81dc | 1527 | if (output->type == CONSUMER_DST_NET) { |
d2956687 | 1528 | msg.u.snapshot_channel.relayd_id = |
348a81dc | 1529 | output->net_seq_index; |
6dc3064a | 1530 | msg.u.snapshot_channel.use_relayd = 1; |
6dc3064a | 1531 | } else { |
07b86b52 | 1532 | msg.u.snapshot_channel.relayd_id = (uint64_t) -1ULL; |
d2956687 JG |
1533 | } |
1534 | ret = lttng_strncpy(msg.u.snapshot_channel.pathname, | |
1535 | channel_path, | |
1536 | sizeof(msg.u.snapshot_channel.pathname)); | |
1537 | if (ret < 0) { | |
1538 | ERR("Snapshot path exceeds the maximal allowed length of %zu bytes (%zu bytes required) with path \"%s\"", | |
1539 | sizeof(msg.u.snapshot_channel.pathname), | |
1540 | strlen(channel_path), | |
1541 | channel_path); | |
1542 | status = LTTNG_ERR_SNAPSHOT_FAIL; | |
1543 | goto error; | |
6dc3064a DG |
1544 | } |
1545 | ||
1546 | health_code_update(); | |
9d1103e6 | 1547 | pthread_mutex_lock(socket->lock); |
6dc3064a | 1548 | ret = consumer_send_msg(socket, &msg); |
9d1103e6 | 1549 | pthread_mutex_unlock(socket->lock); |
6dc3064a | 1550 | if (ret < 0) { |
9bbfb88c MD |
1551 | switch (-ret) { |
1552 | case LTTCOMM_CONSUMERD_CHAN_NOT_FOUND: | |
9a654598 | 1553 | status = LTTNG_ERR_CHAN_NOT_FOUND; |
9bbfb88c MD |
1554 | break; |
1555 | default: | |
9a654598 | 1556 | status = LTTNG_ERR_SNAPSHOT_FAIL; |
9bbfb88c MD |
1557 | break; |
1558 | } | |
6dc3064a DG |
1559 | goto error; |
1560 | } | |
1561 | ||
1562 | error: | |
1563 | health_code_update(); | |
9a654598 | 1564 | return status; |
6dc3064a | 1565 | } |
fb83fe64 JD |
1566 | |
1567 | /* | |
1568 | * Ask the consumer the number of discarded events for a channel. | |
1569 | */ | |
1570 | int consumer_get_discarded_events(uint64_t session_id, uint64_t channel_key, | |
1571 | struct consumer_output *consumer, uint64_t *discarded) | |
1572 | { | |
1573 | int ret; | |
1574 | struct consumer_socket *socket; | |
1575 | struct lttng_ht_iter iter; | |
1576 | struct lttcomm_consumer_msg msg; | |
1577 | ||
1578 | assert(consumer); | |
1579 | ||
1580 | DBG3("Consumer discarded events id %" PRIu64, session_id); | |
1581 | ||
1582 | memset(&msg, 0, sizeof(msg)); | |
1583 | msg.cmd_type = LTTNG_CONSUMER_DISCARDED_EVENTS; | |
1584 | msg.u.discarded_events.session_id = session_id; | |
1585 | msg.u.discarded_events.channel_key = channel_key; | |
1586 | ||
1587 | *discarded = 0; | |
1588 | ||
1589 | /* Send command for each consumer */ | |
1590 | rcu_read_lock(); | |
1591 | cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket, | |
1592 | node.node) { | |
1593 | uint64_t consumer_discarded = 0; | |
1594 | pthread_mutex_lock(socket->lock); | |
1595 | ret = consumer_socket_send(socket, &msg, sizeof(msg)); | |
1596 | if (ret < 0) { | |
1597 | pthread_mutex_unlock(socket->lock); | |
1598 | goto end; | |
1599 | } | |
1600 | ||
1601 | /* | |
1602 | * No need for a recv reply status because the answer to the | |
1603 | * command is the reply status message. | |
1604 | */ | |
1605 | ret = consumer_socket_recv(socket, &consumer_discarded, | |
1606 | sizeof(consumer_discarded)); | |
1607 | if (ret < 0) { | |
1608 | ERR("get discarded events"); | |
1609 | pthread_mutex_unlock(socket->lock); | |
1610 | goto end; | |
1611 | } | |
1612 | pthread_mutex_unlock(socket->lock); | |
1613 | *discarded += consumer_discarded; | |
1614 | } | |
1615 | ret = 0; | |
1616 | DBG("Consumer discarded %" PRIu64 " events in session id %" PRIu64, | |
1617 | *discarded, session_id); | |
1618 | ||
1619 | end: | |
1620 | rcu_read_unlock(); | |
1621 | return ret; | |
1622 | } | |
1623 | ||
1624 | /* | |
1625 | * Ask the consumer the number of lost packets for a channel. | |
1626 | */ | |
1627 | int consumer_get_lost_packets(uint64_t session_id, uint64_t channel_key, | |
1628 | struct consumer_output *consumer, uint64_t *lost) | |
1629 | { | |
1630 | int ret; | |
1631 | struct consumer_socket *socket; | |
1632 | struct lttng_ht_iter iter; | |
1633 | struct lttcomm_consumer_msg msg; | |
1634 | ||
1635 | assert(consumer); | |
1636 | ||
1637 | DBG3("Consumer lost packets id %" PRIu64, session_id); | |
1638 | ||
1639 | memset(&msg, 0, sizeof(msg)); | |
1640 | msg.cmd_type = LTTNG_CONSUMER_LOST_PACKETS; | |
1641 | msg.u.lost_packets.session_id = session_id; | |
1642 | msg.u.lost_packets.channel_key = channel_key; | |
1643 | ||
1644 | *lost = 0; | |
1645 | ||
1646 | /* Send command for each consumer */ | |
1647 | rcu_read_lock(); | |
1648 | cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket, | |
1649 | node.node) { | |
1650 | uint64_t consumer_lost = 0; | |
1651 | pthread_mutex_lock(socket->lock); | |
1652 | ret = consumer_socket_send(socket, &msg, sizeof(msg)); | |
1653 | if (ret < 0) { | |
1654 | pthread_mutex_unlock(socket->lock); | |
1655 | goto end; | |
1656 | } | |
1657 | ||
1658 | /* | |
1659 | * No need for a recv reply status because the answer to the | |
1660 | * command is the reply status message. | |
1661 | */ | |
1662 | ret = consumer_socket_recv(socket, &consumer_lost, | |
1663 | sizeof(consumer_lost)); | |
1664 | if (ret < 0) { | |
1665 | ERR("get lost packets"); | |
1666 | pthread_mutex_unlock(socket->lock); | |
1667 | goto end; | |
1668 | } | |
1669 | pthread_mutex_unlock(socket->lock); | |
1670 | *lost += consumer_lost; | |
1671 | } | |
1672 | ret = 0; | |
1673 | DBG("Consumer lost %" PRIu64 " packets in session id %" PRIu64, | |
1674 | *lost, session_id); | |
1675 | ||
1676 | end: | |
1677 | rcu_read_unlock(); | |
1678 | return ret; | |
1679 | } | |
a1ae2ea5 | 1680 | |
5c408ad8 JD |
1681 | /* |
1682 | * Ask the consumer to rotate a channel. | |
5c408ad8 JD |
1683 | * |
1684 | * The new_chunk_id is the session->rotate_count that has been incremented | |
1685 | * when the rotation started. On the relay, this allows to keep track in which | |
1686 | * chunk each stream is currently writing to (for the rotate_pending operation). | |
1687 | */ | |
1688 | int consumer_rotate_channel(struct consumer_socket *socket, uint64_t key, | |
1689 | uid_t uid, gid_t gid, struct consumer_output *output, | |
d2956687 | 1690 | bool is_metadata_channel) |
5c408ad8 JD |
1691 | { |
1692 | int ret; | |
1693 | struct lttcomm_consumer_msg msg; | |
1694 | ||
1695 | assert(socket); | |
1696 | ||
1697 | DBG("Consumer rotate channel key %" PRIu64, key); | |
1698 | ||
1699 | pthread_mutex_lock(socket->lock); | |
1700 | memset(&msg, 0, sizeof(msg)); | |
1701 | msg.cmd_type = LTTNG_CONSUMER_ROTATE_CHANNEL; | |
1702 | msg.u.rotate_channel.key = key; | |
1703 | msg.u.rotate_channel.metadata = !!is_metadata_channel; | |
5c408ad8 JD |
1704 | |
1705 | if (output->type == CONSUMER_DST_NET) { | |
1706 | msg.u.rotate_channel.relayd_id = output->net_seq_index; | |
5c408ad8 JD |
1707 | } else { |
1708 | msg.u.rotate_channel.relayd_id = (uint64_t) -1ULL; | |
5c408ad8 JD |
1709 | } |
1710 | ||
1711 | health_code_update(); | |
1712 | ret = consumer_send_msg(socket, &msg); | |
1713 | if (ret < 0) { | |
20f37cb4 MD |
1714 | switch (-ret) { |
1715 | case LTTCOMM_CONSUMERD_CHAN_NOT_FOUND: | |
1716 | ret = -LTTNG_ERR_CHAN_NOT_FOUND; | |
1717 | break; | |
1718 | default: | |
1719 | ret = -LTTNG_ERR_ROTATION_FAIL_CONSUMER; | |
1720 | break; | |
1721 | } | |
5c408ad8 JD |
1722 | goto error; |
1723 | } | |
5c408ad8 JD |
1724 | error: |
1725 | pthread_mutex_unlock(socket->lock); | |
1726 | health_code_update(); | |
1727 | return ret; | |
1728 | } | |
1729 | ||
51a4828f MD |
1730 | int consumer_clear_channel(struct consumer_socket *socket, uint64_t key) |
1731 | { | |
1732 | int ret; | |
1733 | struct lttcomm_consumer_msg msg; | |
1734 | ||
1735 | assert(socket); | |
1736 | ||
1737 | DBG("Consumer clear channel %" PRIu64, key); | |
1738 | ||
1739 | memset(&msg, 0, sizeof(msg)); | |
1740 | msg.cmd_type = LTTNG_CONSUMER_CLEAR_CHANNEL; | |
1741 | msg.u.clear_channel.key = key; | |
1742 | ||
1743 | health_code_update(); | |
1744 | ||
1745 | pthread_mutex_lock(socket->lock); | |
1746 | ret = consumer_send_msg(socket, &msg); | |
1747 | if (ret < 0) { | |
1748 | goto error_socket; | |
1749 | } | |
1750 | ||
1751 | error_socket: | |
1752 | pthread_mutex_unlock(socket->lock); | |
1753 | ||
1754 | health_code_update(); | |
1755 | return ret; | |
1756 | } | |
1757 | ||
d2956687 JG |
1758 | int consumer_init(struct consumer_socket *socket, |
1759 | const lttng_uuid sessiond_uuid) | |
00fb02ac JD |
1760 | { |
1761 | int ret; | |
d2956687 JG |
1762 | struct lttcomm_consumer_msg msg = { |
1763 | .cmd_type = LTTNG_CONSUMER_INIT, | |
1764 | }; | |
00fb02ac JD |
1765 | |
1766 | assert(socket); | |
00fb02ac | 1767 | |
d2956687 JG |
1768 | DBG("Sending consumer initialization command"); |
1769 | lttng_uuid_copy(msg.u.init.sessiond_uuid, sessiond_uuid); | |
00fb02ac JD |
1770 | |
1771 | health_code_update(); | |
1772 | ret = consumer_send_msg(socket, &msg); | |
1773 | if (ret < 0) { | |
1774 | goto error; | |
1775 | } | |
1776 | ||
d88744a4 JD |
1777 | error: |
1778 | health_code_update(); | |
1779 | return ret; | |
1780 | } | |
1781 | ||
1782 | /* | |
d2956687 | 1783 | * Ask the consumer to create a new chunk for a given session. |
92816cc3 | 1784 | * |
d2956687 | 1785 | * Called with the consumer socket lock held. |
92816cc3 | 1786 | */ |
d2956687 JG |
1787 | int consumer_create_trace_chunk(struct consumer_socket *socket, |
1788 | uint64_t relayd_id, uint64_t session_id, | |
5da88b0f MD |
1789 | struct lttng_trace_chunk *chunk, |
1790 | const char *domain_subdir) | |
92816cc3 JG |
1791 | { |
1792 | int ret; | |
d2956687 JG |
1793 | enum lttng_trace_chunk_status chunk_status; |
1794 | struct lttng_credentials chunk_credentials; | |
5da88b0f MD |
1795 | const struct lttng_directory_handle *chunk_directory_handle = NULL; |
1796 | struct lttng_directory_handle *domain_handle = NULL; | |
1797 | int domain_dirfd; | |
d2956687 | 1798 | const char *chunk_name; |
913a542b | 1799 | bool chunk_name_overridden; |
d2956687 JG |
1800 | uint64_t chunk_id; |
1801 | time_t creation_timestamp; | |
1802 | char creation_timestamp_buffer[ISO8601_STR_LEN]; | |
1803 | const char *creation_timestamp_str = "(none)"; | |
1804 | const bool chunk_has_local_output = relayd_id == -1ULL; | |
1805 | struct lttcomm_consumer_msg msg = { | |
1806 | .cmd_type = LTTNG_CONSUMER_CREATE_TRACE_CHUNK, | |
1807 | .u.create_trace_chunk.session_id = session_id, | |
1808 | }; | |
92816cc3 JG |
1809 | |
1810 | assert(socket); | |
d2956687 | 1811 | assert(chunk); |
92816cc3 | 1812 | |
d2956687 JG |
1813 | if (relayd_id != -1ULL) { |
1814 | LTTNG_OPTIONAL_SET(&msg.u.create_trace_chunk.relayd_id, | |
1815 | relayd_id); | |
1816 | } | |
92816cc3 | 1817 | |
d2956687 | 1818 | chunk_status = lttng_trace_chunk_get_name(chunk, &chunk_name, |
913a542b | 1819 | &chunk_name_overridden); |
d2956687 JG |
1820 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK && |
1821 | chunk_status != LTTNG_TRACE_CHUNK_STATUS_NONE) { | |
1822 | ERR("Failed to get name of trace chunk"); | |
1823 | ret = -LTTNG_ERR_FATAL; | |
92816cc3 JG |
1824 | goto error; |
1825 | } | |
913a542b | 1826 | if (chunk_name_overridden) { |
d2956687 JG |
1827 | ret = lttng_strncpy(msg.u.create_trace_chunk.override_name, |
1828 | chunk_name, | |
1829 | sizeof(msg.u.create_trace_chunk.override_name)); | |
1830 | if (ret) { | |
1831 | ERR("Trace chunk name \"%s\" exceeds the maximal length allowed by the consumer protocol", | |
1832 | chunk_name); | |
1833 | ret = -LTTNG_ERR_FATAL; | |
1834 | goto error; | |
1835 | } | |
1836 | } | |
92816cc3 | 1837 | |
d2956687 JG |
1838 | chunk_status = lttng_trace_chunk_get_creation_timestamp(chunk, |
1839 | &creation_timestamp); | |
1840 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
1841 | ret = -LTTNG_ERR_FATAL; | |
92816cc3 JG |
1842 | goto error; |
1843 | } | |
d2956687 JG |
1844 | msg.u.create_trace_chunk.creation_timestamp = |
1845 | (uint64_t) creation_timestamp; | |
1846 | /* Only used for logging purposes. */ | |
1847 | ret = time_to_iso8601_str(creation_timestamp, | |
1848 | creation_timestamp_buffer, | |
1849 | sizeof(creation_timestamp_buffer)); | |
1850 | creation_timestamp_str = !ret ? creation_timestamp_buffer : | |
1851 | "(formatting error)"; | |
1852 | ||
1853 | chunk_status = lttng_trace_chunk_get_id(chunk, &chunk_id); | |
1854 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
1855 | /* | |
1856 | * Anonymous trace chunks should never be transmitted | |
1857 | * to remote peers (consumerd and relayd). They are used | |
1858 | * internally for backward-compatibility purposes. | |
1859 | */ | |
1860 | ret = -LTTNG_ERR_FATAL; | |
1861 | goto error; | |
1862 | } | |
1863 | msg.u.create_trace_chunk.chunk_id = chunk_id; | |
92816cc3 | 1864 | |
d2956687 | 1865 | if (chunk_has_local_output) { |
cbf53d23 | 1866 | chunk_status = lttng_trace_chunk_borrow_chunk_directory_handle( |
d2956687 JG |
1867 | chunk, &chunk_directory_handle); |
1868 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
1869 | ret = -LTTNG_ERR_FATAL; | |
1870 | goto error; | |
1871 | } | |
e5add6d0 JG |
1872 | chunk_status = lttng_trace_chunk_get_credentials( |
1873 | chunk, &chunk_credentials); | |
1874 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
1875 | /* | |
1876 | * Not associating credentials to a sessiond chunk is a | |
1877 | * fatal internal error. | |
1878 | */ | |
1879 | ret = -LTTNG_ERR_FATAL; | |
1880 | goto error; | |
1881 | } | |
5da88b0f MD |
1882 | ret = lttng_directory_handle_create_subdirectory_as_user( |
1883 | chunk_directory_handle, | |
1884 | domain_subdir, | |
1885 | S_IRWXU | S_IRWXG, | |
1886 | &chunk_credentials); | |
1887 | if (ret) { | |
1888 | PERROR("Failed to create chunk domain output directory \"%s\"", | |
1889 | domain_subdir); | |
1890 | ret = -LTTNG_ERR_FATAL; | |
1891 | goto error; | |
1892 | } | |
1893 | domain_handle = lttng_directory_handle_create_from_handle( | |
1894 | domain_subdir, | |
1895 | chunk_directory_handle); | |
1896 | if (!domain_handle) { | |
1897 | ret = -LTTNG_ERR_FATAL; | |
1898 | goto error; | |
1899 | } | |
1900 | ||
1901 | /* | |
1902 | * This will only compile on platforms that support | |
1903 | * dirfd (POSIX.2008). This is fine as the session daemon | |
1904 | * is only built for such platforms. | |
1905 | * | |
1906 | * The ownership of the chunk directory handle's is maintained | |
1907 | * by the trace chunk. | |
1908 | */ | |
1909 | domain_dirfd = lttng_directory_handle_get_dirfd( | |
1910 | domain_handle); | |
1911 | assert(domain_dirfd >= 0); | |
1912 | ||
e5add6d0 JG |
1913 | msg.u.create_trace_chunk.credentials.value.uid = |
1914 | chunk_credentials.uid; | |
1915 | msg.u.create_trace_chunk.credentials.value.gid = | |
1916 | chunk_credentials.gid; | |
1917 | msg.u.create_trace_chunk.credentials.is_set = 1; | |
d2956687 | 1918 | } |
d88744a4 | 1919 | |
d2956687 JG |
1920 | DBG("Sending consumer create trace chunk command: relayd_id = %" PRId64 |
1921 | ", session_id = %" PRIu64 ", chunk_id = %" PRIu64 | |
1922 | ", creation_timestamp = %s", | |
1923 | relayd_id, session_id, chunk_id, | |
1924 | creation_timestamp_str); | |
d88744a4 JD |
1925 | health_code_update(); |
1926 | ret = consumer_send_msg(socket, &msg); | |
d2956687 | 1927 | health_code_update(); |
d88744a4 | 1928 | if (ret < 0) { |
d2956687 JG |
1929 | ERR("Trace chunk creation error on consumer"); |
1930 | ret = -LTTNG_ERR_CREATE_TRACE_CHUNK_FAIL_CONSUMER; | |
d88744a4 JD |
1931 | goto error; |
1932 | } | |
1933 | ||
d2956687 | 1934 | if (chunk_has_local_output) { |
5da88b0f | 1935 | DBG("Sending trace chunk domain directory fd to consumer"); |
d2956687 | 1936 | health_code_update(); |
5da88b0f | 1937 | ret = consumer_send_fds(socket, &domain_dirfd, 1); |
d2956687 JG |
1938 | health_code_update(); |
1939 | if (ret < 0) { | |
1940 | ERR("Trace chunk creation error on consumer"); | |
1941 | ret = -LTTNG_ERR_CREATE_TRACE_CHUNK_FAIL_CONSUMER; | |
1942 | goto error; | |
1943 | } | |
d88744a4 | 1944 | } |
00fb02ac | 1945 | error: |
5da88b0f | 1946 | lttng_directory_handle_put(domain_handle); |
00fb02ac JD |
1947 | return ret; |
1948 | } | |
1949 | ||
a1ae2ea5 | 1950 | /* |
d2956687 | 1951 | * Ask the consumer to close a trace chunk for a given session. |
a1ae2ea5 JD |
1952 | * |
1953 | * Called with the consumer socket lock held. | |
1954 | */ | |
d2956687 JG |
1955 | int consumer_close_trace_chunk(struct consumer_socket *socket, |
1956 | uint64_t relayd_id, uint64_t session_id, | |
ecd1a12f MD |
1957 | struct lttng_trace_chunk *chunk, |
1958 | char *closed_trace_chunk_path) | |
a1ae2ea5 JD |
1959 | { |
1960 | int ret; | |
d2956687 JG |
1961 | enum lttng_trace_chunk_status chunk_status; |
1962 | struct lttcomm_consumer_msg msg = { | |
bbc4768c JG |
1963 | .cmd_type = LTTNG_CONSUMER_CLOSE_TRACE_CHUNK, |
1964 | .u.close_trace_chunk.session_id = session_id, | |
d2956687 | 1965 | }; |
ecd1a12f | 1966 | struct lttcomm_consumer_close_trace_chunk_reply reply; |
d2956687 JG |
1967 | uint64_t chunk_id; |
1968 | time_t close_timestamp; | |
bbc4768c JG |
1969 | enum lttng_trace_chunk_command_type close_command; |
1970 | const char *close_command_name = "none"; | |
ecd1a12f | 1971 | struct lttng_dynamic_buffer path_reception_buffer; |
a1ae2ea5 JD |
1972 | |
1973 | assert(socket); | |
ecd1a12f | 1974 | lttng_dynamic_buffer_init(&path_reception_buffer); |
a1ae2ea5 | 1975 | |
d2956687 | 1976 | if (relayd_id != -1ULL) { |
bbc4768c JG |
1977 | LTTNG_OPTIONAL_SET( |
1978 | &msg.u.close_trace_chunk.relayd_id, relayd_id); | |
1979 | } | |
1980 | ||
1981 | chunk_status = lttng_trace_chunk_get_close_command( | |
1982 | chunk, &close_command); | |
1983 | switch (chunk_status) { | |
1984 | case LTTNG_TRACE_CHUNK_STATUS_OK: | |
1985 | LTTNG_OPTIONAL_SET(&msg.u.close_trace_chunk.close_command, | |
1986 | (uint32_t) close_command); | |
1987 | break; | |
1988 | case LTTNG_TRACE_CHUNK_STATUS_NONE: | |
1989 | break; | |
1990 | default: | |
1991 | ERR("Failed to get trace chunk close command"); | |
1992 | ret = -1; | |
1993 | goto error; | |
a1ae2ea5 JD |
1994 | } |
1995 | ||
d2956687 JG |
1996 | chunk_status = lttng_trace_chunk_get_id(chunk, &chunk_id); |
1997 | /* | |
1998 | * Anonymous trace chunks should never be transmitted to remote peers | |
1999 | * (consumerd and relayd). They are used internally for | |
2000 | * backward-compatibility purposes. | |
2001 | */ | |
2002 | assert(chunk_status == LTTNG_TRACE_CHUNK_STATUS_OK); | |
2003 | msg.u.close_trace_chunk.chunk_id = chunk_id; | |
2004 | ||
2005 | chunk_status = lttng_trace_chunk_get_close_timestamp(chunk, | |
2006 | &close_timestamp); | |
2007 | /* | |
2008 | * A trace chunk should be closed locally before being closed remotely. | |
2009 | * Otherwise, the close timestamp would never be transmitted to the | |
2010 | * peers. | |
2011 | */ | |
2012 | assert(chunk_status == LTTNG_TRACE_CHUNK_STATUS_OK); | |
2013 | msg.u.close_trace_chunk.close_timestamp = (uint64_t) close_timestamp; | |
2014 | ||
bbc4768c JG |
2015 | if (msg.u.close_trace_chunk.close_command.is_set) { |
2016 | close_command_name = lttng_trace_chunk_command_type_get_name( | |
2017 | close_command); | |
2018 | } | |
d2956687 | 2019 | DBG("Sending consumer close trace chunk command: relayd_id = %" PRId64 |
bbc4768c JG |
2020 | ", session_id = %" PRIu64 ", chunk_id = %" PRIu64 |
2021 | ", close command = \"%s\"", | |
2022 | relayd_id, session_id, chunk_id, close_command_name); | |
a1ae2ea5 JD |
2023 | |
2024 | health_code_update(); | |
ecd1a12f | 2025 | ret = consumer_socket_send(socket, &msg, sizeof(struct lttcomm_consumer_msg)); |
a1ae2ea5 | 2026 | if (ret < 0) { |
d2956687 | 2027 | ret = -LTTNG_ERR_CLOSE_TRACE_CHUNK_FAIL_CONSUMER; |
a1ae2ea5 JD |
2028 | goto error; |
2029 | } | |
ecd1a12f MD |
2030 | ret = consumer_socket_recv(socket, &reply, sizeof(reply)); |
2031 | if (ret < 0) { | |
2032 | ret = -LTTNG_ERR_CLOSE_TRACE_CHUNK_FAIL_CONSUMER; | |
2033 | goto error; | |
2034 | } | |
2035 | if (reply.path_length >= LTTNG_PATH_MAX) { | |
2036 | ERR("Invalid path returned by relay daemon: %" PRIu32 "bytes exceeds maximal allowed length of %d bytes", | |
2037 | reply.path_length, LTTNG_PATH_MAX); | |
2038 | ret = -LTTNG_ERR_INVALID_PROTOCOL; | |
2039 | goto error; | |
2040 | } | |
2041 | ret = lttng_dynamic_buffer_set_size(&path_reception_buffer, | |
2042 | reply.path_length); | |
2043 | if (ret) { | |
2044 | ERR("Failed to allocate reception buffer of path returned by the \"close trace chunk\" command"); | |
2045 | ret = -LTTNG_ERR_NOMEM; | |
2046 | goto error; | |
2047 | } | |
2048 | ret = consumer_socket_recv(socket, path_reception_buffer.data, | |
2049 | path_reception_buffer.size); | |
2050 | if (ret < 0) { | |
2051 | ERR("Communication error while receiving path of closed trace chunk"); | |
2052 | ret = -LTTNG_ERR_CLOSE_TRACE_CHUNK_FAIL_CONSUMER; | |
2053 | goto error; | |
2054 | } | |
2055 | if (path_reception_buffer.data[path_reception_buffer.size - 1] != '\0') { | |
2056 | ERR("Invalid path returned by relay daemon: not null-terminated"); | |
2057 | ret = -LTTNG_ERR_INVALID_PROTOCOL; | |
2058 | goto error; | |
2059 | } | |
2060 | if (closed_trace_chunk_path) { | |
2061 | /* | |
2062 | * closed_trace_chunk_path is assumed to have a length >= | |
2063 | * LTTNG_PATH_MAX | |
2064 | */ | |
2065 | memcpy(closed_trace_chunk_path, path_reception_buffer.data, | |
2066 | path_reception_buffer.size); | |
2067 | } | |
a1ae2ea5 | 2068 | error: |
ecd1a12f | 2069 | lttng_dynamic_buffer_reset(&path_reception_buffer); |
a1ae2ea5 JD |
2070 | health_code_update(); |
2071 | return ret; | |
2072 | } | |
3654ed19 | 2073 | |
d2956687 JG |
2074 | /* |
2075 | * Ask the consumer if a trace chunk exists. | |
2076 | * | |
2077 | * Called with the consumer socket lock held. | |
2078 | * Returns 0 on success, or a negative value on error. | |
2079 | */ | |
2080 | int consumer_trace_chunk_exists(struct consumer_socket *socket, | |
2081 | uint64_t relayd_id, uint64_t session_id, | |
2082 | struct lttng_trace_chunk *chunk, | |
2083 | enum consumer_trace_chunk_exists_status *result) | |
3654ed19 JG |
2084 | { |
2085 | int ret; | |
d2956687 | 2086 | enum lttng_trace_chunk_status chunk_status; |
3654ed19 | 2087 | struct lttcomm_consumer_msg msg = { |
d2956687 JG |
2088 | .cmd_type = LTTNG_CONSUMER_TRACE_CHUNK_EXISTS, |
2089 | .u.trace_chunk_exists.session_id = session_id, | |
3654ed19 | 2090 | }; |
d2956687 JG |
2091 | uint64_t chunk_id; |
2092 | const char *consumer_reply_str; | |
3654ed19 JG |
2093 | |
2094 | assert(socket); | |
2095 | ||
d2956687 JG |
2096 | if (relayd_id != -1ULL) { |
2097 | LTTNG_OPTIONAL_SET(&msg.u.trace_chunk_exists.relayd_id, | |
2098 | relayd_id); | |
2099 | } | |
2100 | ||
2101 | chunk_status = lttng_trace_chunk_get_id(chunk, &chunk_id); | |
2102 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
2103 | /* | |
2104 | * Anonymous trace chunks should never be transmitted | |
2105 | * to remote peers (consumerd and relayd). They are used | |
2106 | * internally for backward-compatibility purposes. | |
2107 | */ | |
2108 | ret = -LTTNG_ERR_FATAL; | |
2109 | goto error; | |
2110 | } | |
2111 | msg.u.trace_chunk_exists.chunk_id = chunk_id; | |
2112 | ||
2113 | DBG("Sending consumer trace chunk exists command: relayd_id = %" PRId64 | |
2114 | ", session_id = %" PRIu64 | |
2115 | ", chunk_id = %" PRIu64, relayd_id, session_id, chunk_id); | |
3654ed19 JG |
2116 | |
2117 | health_code_update(); | |
2118 | ret = consumer_send_msg(socket, &msg); | |
d2956687 JG |
2119 | switch (-ret) { |
2120 | case LTTCOMM_CONSUMERD_UNKNOWN_TRACE_CHUNK: | |
2121 | consumer_reply_str = "unknown trace chunk"; | |
2122 | *result = CONSUMER_TRACE_CHUNK_EXISTS_STATUS_UNKNOWN_CHUNK; | |
2123 | break; | |
2124 | case LTTCOMM_CONSUMERD_TRACE_CHUNK_EXISTS_LOCAL: | |
2125 | consumer_reply_str = "trace chunk exists locally"; | |
2126 | *result = CONSUMER_TRACE_CHUNK_EXISTS_STATUS_EXISTS_LOCAL; | |
2127 | break; | |
2128 | case LTTCOMM_CONSUMERD_TRACE_CHUNK_EXISTS_REMOTE: | |
2129 | consumer_reply_str = "trace chunk exists on remote peer"; | |
2130 | *result = CONSUMER_TRACE_CHUNK_EXISTS_STATUS_EXISTS_REMOTE; | |
2131 | break; | |
2132 | default: | |
2133 | ERR("Consumer returned an error from TRACE_CHUNK_EXISTS command"); | |
2134 | ret = -1; | |
3654ed19 JG |
2135 | goto error; |
2136 | } | |
d2956687 JG |
2137 | DBG("Consumer reply to TRACE_CHUNK_EXISTS command: %s", |
2138 | consumer_reply_str); | |
2139 | ret = 0; | |
3654ed19 JG |
2140 | error: |
2141 | health_code_update(); | |
2142 | return ret; | |
2143 | } |