Commit | Line | Data |
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00e2e675 DG |
1 | /* |
2 | * Copyright (C) 2012 - David Goulet <dgoulet@efficios.com> | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms of the GNU General Public License, version 2 only, as | |
6 | * published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
11 | * more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License along with | |
14 | * this program; if not, write to the Free Software Foundation, Inc., 51 | |
15 | * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
16 | */ | |
17 | ||
6c1c0768 | 18 | #define _LGPL_SOURCE |
00e2e675 DG |
19 | #include <assert.h> |
20 | #include <stdio.h> | |
21 | #include <stdlib.h> | |
22 | #include <string.h> | |
23 | #include <sys/stat.h> | |
24 | #include <sys/types.h> | |
25 | #include <unistd.h> | |
d88aee68 | 26 | #include <inttypes.h> |
00e2e675 DG |
27 | |
28 | #include <common/common.h> | |
29 | #include <common/defaults.h> | |
30 | #include <common/uri.h> | |
d3e2ba59 | 31 | #include <common/relayd/relayd.h> |
00e2e675 DG |
32 | |
33 | #include "consumer.h" | |
8782cc74 | 34 | #include "health-sessiond.h" |
7972aab2 | 35 | #include "ust-app.h" |
0b2dc8df | 36 | #include "utils.h" |
00e2e675 | 37 | |
52898cb1 DG |
38 | /* |
39 | * Send a data payload using a given consumer socket of size len. | |
40 | * | |
41 | * The consumer socket lock MUST be acquired before calling this since this | |
42 | * function can change the fd value. | |
43 | * | |
44 | * Return 0 on success else a negative value on error. | |
45 | */ | |
46 | int consumer_socket_send(struct consumer_socket *socket, void *msg, size_t len) | |
47 | { | |
48 | int fd; | |
49 | ssize_t size; | |
50 | ||
51 | assert(socket); | |
9363801e | 52 | assert(socket->fd_ptr); |
52898cb1 DG |
53 | assert(msg); |
54 | ||
55 | /* Consumer socket is invalid. Stopping. */ | |
9363801e | 56 | fd = *socket->fd_ptr; |
52898cb1 DG |
57 | if (fd < 0) { |
58 | goto error; | |
59 | } | |
60 | ||
61 | size = lttcomm_send_unix_sock(fd, msg, len); | |
62 | if (size < 0) { | |
63 | /* The above call will print a PERROR on error. */ | |
64 | DBG("Error when sending data to consumer on sock %d", fd); | |
65 | /* | |
92db7cdc DG |
66 | * At this point, the socket is not usable anymore thus closing it and |
67 | * setting the file descriptor to -1 so it is not reused. | |
52898cb1 DG |
68 | */ |
69 | ||
70 | /* This call will PERROR on error. */ | |
71 | (void) lttcomm_close_unix_sock(fd); | |
9363801e | 72 | *socket->fd_ptr = -1; |
52898cb1 DG |
73 | goto error; |
74 | } | |
75 | ||
76 | return 0; | |
77 | ||
78 | error: | |
79 | return -1; | |
80 | } | |
81 | ||
82 | /* | |
83 | * Receive a data payload using a given consumer socket of size len. | |
84 | * | |
85 | * The consumer socket lock MUST be acquired before calling this since this | |
86 | * function can change the fd value. | |
87 | * | |
88 | * Return 0 on success else a negative value on error. | |
89 | */ | |
90 | int consumer_socket_recv(struct consumer_socket *socket, void *msg, size_t len) | |
91 | { | |
92 | int fd; | |
93 | ssize_t size; | |
94 | ||
95 | assert(socket); | |
9363801e | 96 | assert(socket->fd_ptr); |
52898cb1 DG |
97 | assert(msg); |
98 | ||
99 | /* Consumer socket is invalid. Stopping. */ | |
9363801e | 100 | fd = *socket->fd_ptr; |
52898cb1 DG |
101 | if (fd < 0) { |
102 | goto error; | |
103 | } | |
104 | ||
105 | size = lttcomm_recv_unix_sock(fd, msg, len); | |
106 | if (size <= 0) { | |
107 | /* The above call will print a PERROR on error. */ | |
108 | DBG("Error when receiving data from the consumer socket %d", fd); | |
109 | /* | |
92db7cdc DG |
110 | * At this point, the socket is not usable anymore thus closing it and |
111 | * setting the file descriptor to -1 so it is not reused. | |
52898cb1 DG |
112 | */ |
113 | ||
114 | /* This call will PERROR on error. */ | |
115 | (void) lttcomm_close_unix_sock(fd); | |
9363801e | 116 | *socket->fd_ptr = -1; |
52898cb1 DG |
117 | goto error; |
118 | } | |
119 | ||
120 | return 0; | |
121 | ||
122 | error: | |
123 | return -1; | |
124 | } | |
125 | ||
f50f23d9 DG |
126 | /* |
127 | * Receive a reply command status message from the consumer. Consumer socket | |
128 | * lock MUST be acquired before calling this function. | |
129 | * | |
130 | * Return 0 on success, -1 on recv error or a negative lttng error code which | |
131 | * was possibly returned by the consumer. | |
132 | */ | |
133 | int consumer_recv_status_reply(struct consumer_socket *sock) | |
134 | { | |
135 | int ret; | |
136 | struct lttcomm_consumer_status_msg reply; | |
137 | ||
138 | assert(sock); | |
139 | ||
52898cb1 DG |
140 | ret = consumer_socket_recv(sock, &reply, sizeof(reply)); |
141 | if (ret < 0) { | |
f50f23d9 DG |
142 | goto end; |
143 | } | |
144 | ||
0c759fc9 | 145 | if (reply.ret_code == LTTCOMM_CONSUMERD_SUCCESS) { |
f50f23d9 DG |
146 | /* All good. */ |
147 | ret = 0; | |
148 | } else { | |
149 | ret = -reply.ret_code; | |
f50f23d9 DG |
150 | } |
151 | ||
152 | end: | |
153 | return ret; | |
154 | } | |
155 | ||
ffe60014 DG |
156 | /* |
157 | * Once the ASK_CHANNEL command is sent to the consumer, the channel | |
158 | * information are sent back. This call receives that data and populates key | |
159 | * and stream_count. | |
160 | * | |
161 | * On success return 0 and both key and stream_count are set. On error, a | |
162 | * negative value is sent back and both parameters are untouched. | |
163 | */ | |
164 | int consumer_recv_status_channel(struct consumer_socket *sock, | |
d88aee68 | 165 | uint64_t *key, unsigned int *stream_count) |
ffe60014 DG |
166 | { |
167 | int ret; | |
168 | struct lttcomm_consumer_status_channel reply; | |
169 | ||
170 | assert(sock); | |
171 | assert(stream_count); | |
172 | assert(key); | |
173 | ||
52898cb1 DG |
174 | ret = consumer_socket_recv(sock, &reply, sizeof(reply)); |
175 | if (ret < 0) { | |
ffe60014 DG |
176 | goto end; |
177 | } | |
178 | ||
179 | /* An error is possible so don't touch the key and stream_count. */ | |
0c759fc9 | 180 | if (reply.ret_code != LTTCOMM_CONSUMERD_SUCCESS) { |
ffe60014 DG |
181 | ret = -1; |
182 | goto end; | |
183 | } | |
184 | ||
185 | *key = reply.key; | |
186 | *stream_count = reply.stream_count; | |
0c759fc9 | 187 | ret = 0; |
ffe60014 DG |
188 | |
189 | end: | |
190 | return ret; | |
191 | } | |
192 | ||
2f77fc4b DG |
193 | /* |
194 | * Send destroy relayd command to consumer. | |
195 | * | |
196 | * On success return positive value. On error, negative value. | |
197 | */ | |
198 | int consumer_send_destroy_relayd(struct consumer_socket *sock, | |
199 | struct consumer_output *consumer) | |
200 | { | |
201 | int ret; | |
202 | struct lttcomm_consumer_msg msg; | |
203 | ||
204 | assert(consumer); | |
205 | assert(sock); | |
206 | ||
9363801e | 207 | DBG2("Sending destroy relayd command to consumer sock %d", *sock->fd_ptr); |
2f77fc4b | 208 | |
53efb85a | 209 | memset(&msg, 0, sizeof(msg)); |
2f77fc4b DG |
210 | msg.cmd_type = LTTNG_CONSUMER_DESTROY_RELAYD; |
211 | msg.u.destroy_relayd.net_seq_idx = consumer->net_seq_index; | |
212 | ||
213 | pthread_mutex_lock(sock->lock); | |
52898cb1 | 214 | ret = consumer_socket_send(sock, &msg, sizeof(msg)); |
2f77fc4b | 215 | if (ret < 0) { |
52898cb1 | 216 | goto error; |
2f77fc4b DG |
217 | } |
218 | ||
f50f23d9 DG |
219 | /* Don't check the return value. The caller will do it. */ |
220 | ret = consumer_recv_status_reply(sock); | |
221 | ||
2f77fc4b DG |
222 | DBG2("Consumer send destroy relayd command done"); |
223 | ||
224 | error: | |
52898cb1 | 225 | pthread_mutex_unlock(sock->lock); |
2f77fc4b DG |
226 | return ret; |
227 | } | |
228 | ||
229 | /* | |
230 | * For each consumer socket in the consumer output object, send a destroy | |
231 | * relayd command. | |
232 | */ | |
233 | void consumer_output_send_destroy_relayd(struct consumer_output *consumer) | |
234 | { | |
2f77fc4b DG |
235 | struct lttng_ht_iter iter; |
236 | struct consumer_socket *socket; | |
237 | ||
238 | assert(consumer); | |
239 | ||
240 | /* Destroy any relayd connection */ | |
6dc3064a | 241 | if (consumer->type == CONSUMER_DST_NET) { |
2f77fc4b DG |
242 | rcu_read_lock(); |
243 | cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket, | |
244 | node.node) { | |
c617c0c6 MD |
245 | int ret; |
246 | ||
2f77fc4b DG |
247 | /* Send destroy relayd command */ |
248 | ret = consumer_send_destroy_relayd(socket, consumer); | |
249 | if (ret < 0) { | |
c5c45efa | 250 | DBG("Unable to send destroy relayd command to consumer"); |
2f77fc4b DG |
251 | /* Continue since we MUST delete everything at this point. */ |
252 | } | |
253 | } | |
254 | rcu_read_unlock(); | |
255 | } | |
256 | } | |
257 | ||
a4b92340 DG |
258 | /* |
259 | * From a consumer_data structure, allocate and add a consumer socket to the | |
260 | * consumer output. | |
261 | * | |
262 | * Return 0 on success, else negative value on error | |
263 | */ | |
264 | int consumer_create_socket(struct consumer_data *data, | |
265 | struct consumer_output *output) | |
266 | { | |
267 | int ret = 0; | |
268 | struct consumer_socket *socket; | |
269 | ||
270 | assert(data); | |
271 | ||
272 | if (output == NULL || data->cmd_sock < 0) { | |
273 | /* | |
274 | * Not an error. Possible there is simply not spawned consumer or it's | |
275 | * disabled for the tracing session asking the socket. | |
276 | */ | |
277 | goto error; | |
278 | } | |
279 | ||
280 | rcu_read_lock(); | |
281 | socket = consumer_find_socket(data->cmd_sock, output); | |
282 | rcu_read_unlock(); | |
283 | if (socket == NULL) { | |
4ce514c4 | 284 | socket = consumer_allocate_socket(&data->cmd_sock); |
a4b92340 DG |
285 | if (socket == NULL) { |
286 | ret = -1; | |
287 | goto error; | |
288 | } | |
289 | ||
2f77fc4b | 290 | socket->registered = 0; |
a4b92340 DG |
291 | socket->lock = &data->lock; |
292 | rcu_read_lock(); | |
293 | consumer_add_socket(socket, output); | |
294 | rcu_read_unlock(); | |
295 | } | |
296 | ||
6dc3064a DG |
297 | socket->type = data->type; |
298 | ||
a4b92340 DG |
299 | DBG3("Consumer socket created (fd: %d) and added to output", |
300 | data->cmd_sock); | |
301 | ||
302 | error: | |
303 | return ret; | |
304 | } | |
305 | ||
7972aab2 DG |
306 | /* |
307 | * Return the consumer socket from the given consumer output with the right | |
308 | * bitness. On error, returns NULL. | |
309 | * | |
310 | * The caller MUST acquire a rcu read side lock and keep it until the socket | |
311 | * object reference is not needed anymore. | |
312 | */ | |
313 | struct consumer_socket *consumer_find_socket_by_bitness(int bits, | |
314 | struct consumer_output *consumer) | |
315 | { | |
316 | int consumer_fd; | |
317 | struct consumer_socket *socket = NULL; | |
318 | ||
319 | switch (bits) { | |
320 | case 64: | |
321 | consumer_fd = uatomic_read(&ust_consumerd64_fd); | |
322 | break; | |
323 | case 32: | |
324 | consumer_fd = uatomic_read(&ust_consumerd32_fd); | |
325 | break; | |
326 | default: | |
327 | assert(0); | |
328 | goto end; | |
329 | } | |
330 | ||
331 | socket = consumer_find_socket(consumer_fd, consumer); | |
332 | if (!socket) { | |
333 | ERR("Consumer socket fd %d not found in consumer obj %p", | |
334 | consumer_fd, consumer); | |
335 | } | |
336 | ||
337 | end: | |
338 | return socket; | |
339 | } | |
340 | ||
173af62f DG |
341 | /* |
342 | * Find a consumer_socket in a consumer_output hashtable. Read side lock must | |
343 | * be acquired before calling this function and across use of the | |
344 | * returned consumer_socket. | |
345 | */ | |
346 | struct consumer_socket *consumer_find_socket(int key, | |
347 | struct consumer_output *consumer) | |
348 | { | |
349 | struct lttng_ht_iter iter; | |
350 | struct lttng_ht_node_ulong *node; | |
351 | struct consumer_socket *socket = NULL; | |
352 | ||
353 | /* Negative keys are lookup failures */ | |
a4b92340 | 354 | if (key < 0 || consumer == NULL) { |
173af62f DG |
355 | return NULL; |
356 | } | |
357 | ||
358 | lttng_ht_lookup(consumer->socks, (void *)((unsigned long) key), | |
359 | &iter); | |
360 | node = lttng_ht_iter_get_node_ulong(&iter); | |
361 | if (node != NULL) { | |
362 | socket = caa_container_of(node, struct consumer_socket, node); | |
363 | } | |
364 | ||
365 | return socket; | |
366 | } | |
367 | ||
368 | /* | |
369 | * Allocate a new consumer_socket and return the pointer. | |
370 | */ | |
4ce514c4 | 371 | struct consumer_socket *consumer_allocate_socket(int *fd) |
173af62f DG |
372 | { |
373 | struct consumer_socket *socket = NULL; | |
374 | ||
4ce514c4 DG |
375 | assert(fd); |
376 | ||
173af62f DG |
377 | socket = zmalloc(sizeof(struct consumer_socket)); |
378 | if (socket == NULL) { | |
379 | PERROR("zmalloc consumer socket"); | |
380 | goto error; | |
381 | } | |
382 | ||
9363801e | 383 | socket->fd_ptr = fd; |
4ce514c4 | 384 | lttng_ht_node_init_ulong(&socket->node, *fd); |
173af62f DG |
385 | |
386 | error: | |
387 | return socket; | |
388 | } | |
389 | ||
390 | /* | |
391 | * Add consumer socket to consumer output object. Read side lock must be | |
392 | * acquired before calling this function. | |
393 | */ | |
394 | void consumer_add_socket(struct consumer_socket *sock, | |
395 | struct consumer_output *consumer) | |
396 | { | |
397 | assert(sock); | |
398 | assert(consumer); | |
399 | ||
400 | lttng_ht_add_unique_ulong(consumer->socks, &sock->node); | |
401 | } | |
402 | ||
403 | /* | |
404 | * Delte consumer socket to consumer output object. Read side lock must be | |
405 | * acquired before calling this function. | |
406 | */ | |
407 | void consumer_del_socket(struct consumer_socket *sock, | |
408 | struct consumer_output *consumer) | |
409 | { | |
410 | int ret; | |
411 | struct lttng_ht_iter iter; | |
412 | ||
413 | assert(sock); | |
414 | assert(consumer); | |
415 | ||
416 | iter.iter.node = &sock->node.node; | |
417 | ret = lttng_ht_del(consumer->socks, &iter); | |
418 | assert(!ret); | |
419 | } | |
420 | ||
421 | /* | |
422 | * RCU destroy call function. | |
423 | */ | |
424 | static void destroy_socket_rcu(struct rcu_head *head) | |
425 | { | |
426 | struct lttng_ht_node_ulong *node = | |
427 | caa_container_of(head, struct lttng_ht_node_ulong, head); | |
428 | struct consumer_socket *socket = | |
429 | caa_container_of(node, struct consumer_socket, node); | |
430 | ||
431 | free(socket); | |
432 | } | |
433 | ||
434 | /* | |
435 | * Destroy and free socket pointer in a call RCU. Read side lock must be | |
436 | * acquired before calling this function. | |
437 | */ | |
438 | void consumer_destroy_socket(struct consumer_socket *sock) | |
439 | { | |
440 | assert(sock); | |
441 | ||
442 | /* | |
443 | * We DO NOT close the file descriptor here since it is global to the | |
2f77fc4b DG |
444 | * session daemon and is closed only if the consumer dies or a custom |
445 | * consumer was registered, | |
173af62f | 446 | */ |
2f77fc4b | 447 | if (sock->registered) { |
9363801e DG |
448 | DBG3("Consumer socket was registered. Closing fd %d", *sock->fd_ptr); |
449 | lttcomm_close_unix_sock(*sock->fd_ptr); | |
2f77fc4b | 450 | } |
173af62f DG |
451 | |
452 | call_rcu(&sock->node.head, destroy_socket_rcu); | |
453 | } | |
454 | ||
00e2e675 DG |
455 | /* |
456 | * Allocate and assign data to a consumer_output object. | |
457 | * | |
458 | * Return pointer to structure. | |
459 | */ | |
460 | struct consumer_output *consumer_create_output(enum consumer_dst_type type) | |
461 | { | |
462 | struct consumer_output *output = NULL; | |
463 | ||
464 | output = zmalloc(sizeof(struct consumer_output)); | |
465 | if (output == NULL) { | |
466 | PERROR("zmalloc consumer_output"); | |
467 | goto error; | |
468 | } | |
469 | ||
470 | /* By default, consumer output is enabled */ | |
471 | output->enabled = 1; | |
472 | output->type = type; | |
d88aee68 | 473 | output->net_seq_index = (uint64_t) -1ULL; |
6addfa37 | 474 | urcu_ref_init(&output->ref); |
173af62f DG |
475 | |
476 | output->socks = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG); | |
00e2e675 DG |
477 | |
478 | error: | |
479 | return output; | |
480 | } | |
481 | ||
af706bb7 DG |
482 | /* |
483 | * Iterate over the consumer output socket hash table and destroy them. The | |
484 | * socket file descriptor are only closed if the consumer output was | |
485 | * registered meaning it's an external consumer. | |
486 | */ | |
487 | void consumer_destroy_output_sockets(struct consumer_output *obj) | |
488 | { | |
489 | struct lttng_ht_iter iter; | |
490 | struct consumer_socket *socket; | |
491 | ||
492 | if (!obj->socks) { | |
493 | return; | |
494 | } | |
495 | ||
496 | rcu_read_lock(); | |
497 | cds_lfht_for_each_entry(obj->socks->ht, &iter.iter, socket, node.node) { | |
498 | consumer_del_socket(socket, obj); | |
499 | consumer_destroy_socket(socket); | |
500 | } | |
501 | rcu_read_unlock(); | |
502 | } | |
503 | ||
00e2e675 DG |
504 | /* |
505 | * Delete the consumer_output object from the list and free the ptr. | |
36b588ed MD |
506 | * |
507 | * Should *NOT* be called with RCU read-side lock held. | |
00e2e675 | 508 | */ |
6addfa37 | 509 | static void consumer_release_output(struct urcu_ref *ref) |
00e2e675 | 510 | { |
6addfa37 MD |
511 | struct consumer_output *obj = |
512 | caa_container_of(ref, struct consumer_output, ref); | |
00e2e675 | 513 | |
af706bb7 | 514 | consumer_destroy_output_sockets(obj); |
2f77fc4b | 515 | |
af706bb7 | 516 | if (obj->socks) { |
2f77fc4b | 517 | /* Finally destroy HT */ |
0b2dc8df | 518 | ht_cleanup_push(obj->socks); |
00e2e675 | 519 | } |
173af62f | 520 | |
00e2e675 DG |
521 | free(obj); |
522 | } | |
523 | ||
6addfa37 MD |
524 | /* |
525 | * Get the consumer_output object. | |
526 | */ | |
527 | void consumer_output_get(struct consumer_output *obj) | |
528 | { | |
529 | urcu_ref_get(&obj->ref); | |
530 | } | |
531 | ||
532 | /* | |
533 | * Put the consumer_output object. | |
534 | * | |
535 | * Should *NOT* be called with RCU read-side lock held. | |
536 | */ | |
537 | void consumer_output_put(struct consumer_output *obj) | |
538 | { | |
539 | if (!obj) { | |
540 | return; | |
541 | } | |
542 | urcu_ref_put(&obj->ref, consumer_release_output); | |
543 | } | |
544 | ||
00e2e675 DG |
545 | /* |
546 | * Copy consumer output and returned the newly allocated copy. | |
36b588ed MD |
547 | * |
548 | * Should *NOT* be called with RCU read-side lock held. | |
00e2e675 DG |
549 | */ |
550 | struct consumer_output *consumer_copy_output(struct consumer_output *obj) | |
551 | { | |
6dc3064a | 552 | int ret; |
00e2e675 DG |
553 | struct consumer_output *output; |
554 | ||
555 | assert(obj); | |
556 | ||
557 | output = consumer_create_output(obj->type); | |
558 | if (output == NULL) { | |
6addfa37 | 559 | goto end; |
00e2e675 | 560 | } |
6addfa37 MD |
561 | output->enabled = obj->enabled; |
562 | output->net_seq_index = obj->net_seq_index; | |
563 | memcpy(output->subdir, obj->subdir, PATH_MAX); | |
564 | output->snapshot = obj->snapshot; | |
b31610f2 JD |
565 | output->relay_major_version = obj->relay_major_version; |
566 | output->relay_minor_version = obj->relay_minor_version; | |
6addfa37 | 567 | memcpy(&output->dst, &obj->dst, sizeof(output->dst)); |
6dc3064a DG |
568 | ret = consumer_copy_sockets(output, obj); |
569 | if (ret < 0) { | |
6addfa37 | 570 | goto error_put; |
6dc3064a | 571 | } |
6addfa37 | 572 | end: |
6dc3064a DG |
573 | return output; |
574 | ||
6addfa37 MD |
575 | error_put: |
576 | consumer_output_put(output); | |
6dc3064a DG |
577 | return NULL; |
578 | } | |
579 | ||
580 | /* | |
581 | * Copy consumer sockets from src to dst. | |
582 | * | |
583 | * Return 0 on success or else a negative value. | |
584 | */ | |
585 | int consumer_copy_sockets(struct consumer_output *dst, | |
586 | struct consumer_output *src) | |
587 | { | |
588 | int ret = 0; | |
589 | struct lttng_ht_iter iter; | |
590 | struct consumer_socket *socket, *copy_sock; | |
591 | ||
592 | assert(dst); | |
593 | assert(src); | |
594 | ||
b82c5c4d | 595 | rcu_read_lock(); |
6dc3064a DG |
596 | cds_lfht_for_each_entry(src->socks->ht, &iter.iter, socket, node.node) { |
597 | /* Ignore socket that are already there. */ | |
9363801e | 598 | copy_sock = consumer_find_socket(*socket->fd_ptr, dst); |
6dc3064a DG |
599 | if (copy_sock) { |
600 | continue; | |
601 | } | |
602 | ||
173af62f | 603 | /* Create new socket object. */ |
9363801e | 604 | copy_sock = consumer_allocate_socket(socket->fd_ptr); |
173af62f | 605 | if (copy_sock == NULL) { |
b82c5c4d | 606 | rcu_read_unlock(); |
6dc3064a DG |
607 | ret = -ENOMEM; |
608 | goto error; | |
173af62f DG |
609 | } |
610 | ||
09a90bcd | 611 | copy_sock->registered = socket->registered; |
6dc3064a DG |
612 | /* |
613 | * This is valid because this lock is shared accross all consumer | |
614 | * object being the global lock of the consumer data structure of the | |
615 | * session daemon. | |
616 | */ | |
173af62f | 617 | copy_sock->lock = socket->lock; |
6dc3064a | 618 | consumer_add_socket(copy_sock, dst); |
173af62f | 619 | } |
b82c5c4d | 620 | rcu_read_unlock(); |
173af62f | 621 | |
00e2e675 | 622 | error: |
6dc3064a | 623 | return ret; |
00e2e675 DG |
624 | } |
625 | ||
626 | /* | |
627 | * Set network URI to the consumer output object. | |
628 | * | |
ad20f474 DG |
629 | * Return 0 on success. Return 1 if the URI were equal. Else, negative value on |
630 | * error. | |
00e2e675 DG |
631 | */ |
632 | int consumer_set_network_uri(struct consumer_output *obj, | |
633 | struct lttng_uri *uri) | |
634 | { | |
635 | int ret; | |
636 | char tmp_path[PATH_MAX]; | |
637 | char hostname[HOST_NAME_MAX]; | |
638 | struct lttng_uri *dst_uri = NULL; | |
639 | ||
640 | /* Code flow error safety net. */ | |
641 | assert(obj); | |
642 | assert(uri); | |
643 | ||
644 | switch (uri->stype) { | |
645 | case LTTNG_STREAM_CONTROL: | |
646 | dst_uri = &obj->dst.net.control; | |
647 | obj->dst.net.control_isset = 1; | |
648 | if (uri->port == 0) { | |
649 | /* Assign default port. */ | |
650 | uri->port = DEFAULT_NETWORK_CONTROL_PORT; | |
a74934ba DG |
651 | } else { |
652 | if (obj->dst.net.data_isset && uri->port == | |
653 | obj->dst.net.data.port) { | |
654 | ret = -LTTNG_ERR_INVALID; | |
655 | goto error; | |
656 | } | |
00e2e675 | 657 | } |
ad20f474 | 658 | DBG3("Consumer control URI set with port %d", uri->port); |
00e2e675 DG |
659 | break; |
660 | case LTTNG_STREAM_DATA: | |
661 | dst_uri = &obj->dst.net.data; | |
662 | obj->dst.net.data_isset = 1; | |
663 | if (uri->port == 0) { | |
664 | /* Assign default port. */ | |
665 | uri->port = DEFAULT_NETWORK_DATA_PORT; | |
a74934ba DG |
666 | } else { |
667 | if (obj->dst.net.control_isset && uri->port == | |
668 | obj->dst.net.control.port) { | |
669 | ret = -LTTNG_ERR_INVALID; | |
670 | goto error; | |
671 | } | |
00e2e675 | 672 | } |
ad20f474 | 673 | DBG3("Consumer data URI set with port %d", uri->port); |
00e2e675 DG |
674 | break; |
675 | default: | |
676 | ERR("Set network uri type unknown %d", uri->stype); | |
a74934ba | 677 | ret = -LTTNG_ERR_INVALID; |
00e2e675 DG |
678 | goto error; |
679 | } | |
680 | ||
681 | ret = uri_compare(dst_uri, uri); | |
682 | if (!ret) { | |
683 | /* Same URI, don't touch it and return success. */ | |
684 | DBG3("URI network compare are the same"); | |
ad20f474 | 685 | goto equal; |
00e2e675 DG |
686 | } |
687 | ||
688 | /* URIs were not equal, replacing it. */ | |
689 | memset(dst_uri, 0, sizeof(struct lttng_uri)); | |
690 | memcpy(dst_uri, uri, sizeof(struct lttng_uri)); | |
691 | obj->type = CONSUMER_DST_NET; | |
692 | ||
693 | /* Handle subdir and add hostname in front. */ | |
694 | if (dst_uri->stype == LTTNG_STREAM_CONTROL) { | |
695 | /* Get hostname to append it in the pathname */ | |
696 | ret = gethostname(hostname, sizeof(hostname)); | |
697 | if (ret < 0) { | |
698 | PERROR("gethostname. Fallback on default localhost"); | |
699 | strncpy(hostname, "localhost", sizeof(hostname)); | |
700 | } | |
701 | hostname[sizeof(hostname) - 1] = '\0'; | |
702 | ||
703 | /* Setup consumer subdir if none present in the control URI */ | |
704 | if (strlen(dst_uri->subdir) == 0) { | |
705 | ret = snprintf(tmp_path, sizeof(tmp_path), "%s/%s", | |
706 | hostname, obj->subdir); | |
707 | } else { | |
708 | ret = snprintf(tmp_path, sizeof(tmp_path), "%s/%s", | |
709 | hostname, dst_uri->subdir); | |
710 | } | |
711 | if (ret < 0) { | |
712 | PERROR("snprintf set consumer uri subdir"); | |
a74934ba | 713 | ret = -LTTNG_ERR_NOMEM; |
00e2e675 DG |
714 | goto error; |
715 | } | |
716 | ||
bfc6eff0 MD |
717 | if (lttng_strncpy(obj->subdir, tmp_path, sizeof(obj->subdir))) { |
718 | ret = -LTTNG_ERR_INVALID; | |
719 | goto error; | |
720 | } | |
00e2e675 DG |
721 | DBG3("Consumer set network uri subdir path %s", tmp_path); |
722 | } | |
723 | ||
00e2e675 | 724 | return 0; |
ad20f474 DG |
725 | equal: |
726 | return 1; | |
00e2e675 | 727 | error: |
a74934ba | 728 | return ret; |
00e2e675 DG |
729 | } |
730 | ||
731 | /* | |
732 | * Send file descriptor to consumer via sock. | |
54a3f903 JG |
733 | * |
734 | * The consumer socket lock must be held by the caller. | |
00e2e675 | 735 | */ |
f50f23d9 | 736 | int consumer_send_fds(struct consumer_socket *sock, int *fds, size_t nb_fd) |
00e2e675 DG |
737 | { |
738 | int ret; | |
739 | ||
740 | assert(fds); | |
f50f23d9 | 741 | assert(sock); |
00e2e675 | 742 | assert(nb_fd > 0); |
564d3217 | 743 | assert(pthread_mutex_trylock(sock->lock) == EBUSY); |
00e2e675 | 744 | |
9363801e | 745 | ret = lttcomm_send_fds_unix_sock(*sock->fd_ptr, fds, nb_fd); |
00e2e675 | 746 | if (ret < 0) { |
3448e266 | 747 | /* The above call will print a PERROR on error. */ |
9363801e | 748 | DBG("Error when sending consumer fds on sock %d", *sock->fd_ptr); |
00e2e675 DG |
749 | goto error; |
750 | } | |
751 | ||
f50f23d9 | 752 | ret = consumer_recv_status_reply(sock); |
00e2e675 DG |
753 | error: |
754 | return ret; | |
755 | } | |
756 | ||
ffe60014 DG |
757 | /* |
758 | * Consumer send communication message structure to consumer. | |
54a3f903 JG |
759 | * |
760 | * The consumer socket lock must be held by the caller. | |
ffe60014 DG |
761 | */ |
762 | int consumer_send_msg(struct consumer_socket *sock, | |
763 | struct lttcomm_consumer_msg *msg) | |
764 | { | |
765 | int ret; | |
766 | ||
767 | assert(msg); | |
768 | assert(sock); | |
d841d6db | 769 | assert(pthread_mutex_trylock(sock->lock) == EBUSY); |
ffe60014 | 770 | |
52898cb1 | 771 | ret = consumer_socket_send(sock, msg, sizeof(struct lttcomm_consumer_msg)); |
ffe60014 | 772 | if (ret < 0) { |
ffe60014 DG |
773 | goto error; |
774 | } | |
775 | ||
776 | ret = consumer_recv_status_reply(sock); | |
777 | ||
778 | error: | |
779 | return ret; | |
780 | } | |
781 | ||
00e2e675 DG |
782 | /* |
783 | * Consumer send channel communication message structure to consumer. | |
54a3f903 JG |
784 | * |
785 | * The consumer socket lock must be held by the caller. | |
00e2e675 | 786 | */ |
f50f23d9 DG |
787 | int consumer_send_channel(struct consumer_socket *sock, |
788 | struct lttcomm_consumer_msg *msg) | |
00e2e675 DG |
789 | { |
790 | int ret; | |
791 | ||
792 | assert(msg); | |
f50f23d9 | 793 | assert(sock); |
00e2e675 | 794 | |
52898cb1 | 795 | ret = consumer_send_msg(sock, msg); |
00e2e675 | 796 | if (ret < 0) { |
00e2e675 DG |
797 | goto error; |
798 | } | |
799 | ||
800 | error: | |
801 | return ret; | |
802 | } | |
803 | ||
ffe60014 DG |
804 | /* |
805 | * Populate the given consumer msg structure with the ask_channel command | |
806 | * information. | |
807 | */ | |
808 | void consumer_init_ask_channel_comm_msg(struct lttcomm_consumer_msg *msg, | |
809 | uint64_t subbuf_size, | |
810 | uint64_t num_subbuf, | |
811 | int overwrite, | |
812 | unsigned int switch_timer_interval, | |
813 | unsigned int read_timer_interval, | |
ecc48a90 | 814 | unsigned int live_timer_interval, |
e9404c27 | 815 | unsigned int monitor_timer_interval, |
ffe60014 DG |
816 | int output, |
817 | int type, | |
818 | uint64_t session_id, | |
819 | const char *pathname, | |
820 | const char *name, | |
821 | uid_t uid, | |
822 | gid_t gid, | |
d88aee68 DG |
823 | uint64_t relayd_id, |
824 | uint64_t key, | |
7972aab2 | 825 | unsigned char *uuid, |
1624d5b7 JD |
826 | uint32_t chan_id, |
827 | uint64_t tracefile_size, | |
2bba9e53 | 828 | uint64_t tracefile_count, |
1950109e | 829 | uint64_t session_id_per_pid, |
567eb353 | 830 | unsigned int monitor, |
d7ba1388 | 831 | uint32_t ust_app_uid, |
f515d318 | 832 | int64_t blocking_timeout, |
3d071855 | 833 | const char *root_shm_path, |
d7ba1388 | 834 | const char *shm_path) |
ffe60014 DG |
835 | { |
836 | assert(msg); | |
837 | ||
838 | /* Zeroed structure */ | |
839 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
840 | ||
841 | msg->cmd_type = LTTNG_CONSUMER_ASK_CHANNEL_CREATION; | |
842 | msg->u.ask_channel.subbuf_size = subbuf_size; | |
843 | msg->u.ask_channel.num_subbuf = num_subbuf ; | |
844 | msg->u.ask_channel.overwrite = overwrite; | |
845 | msg->u.ask_channel.switch_timer_interval = switch_timer_interval; | |
846 | msg->u.ask_channel.read_timer_interval = read_timer_interval; | |
ecc48a90 | 847 | msg->u.ask_channel.live_timer_interval = live_timer_interval; |
e9404c27 | 848 | msg->u.ask_channel.monitor_timer_interval = monitor_timer_interval; |
ffe60014 DG |
849 | msg->u.ask_channel.output = output; |
850 | msg->u.ask_channel.type = type; | |
851 | msg->u.ask_channel.session_id = session_id; | |
1950109e | 852 | msg->u.ask_channel.session_id_per_pid = session_id_per_pid; |
ffe60014 DG |
853 | msg->u.ask_channel.uid = uid; |
854 | msg->u.ask_channel.gid = gid; | |
855 | msg->u.ask_channel.relayd_id = relayd_id; | |
856 | msg->u.ask_channel.key = key; | |
7972aab2 | 857 | msg->u.ask_channel.chan_id = chan_id; |
1624d5b7 JD |
858 | msg->u.ask_channel.tracefile_size = tracefile_size; |
859 | msg->u.ask_channel.tracefile_count = tracefile_count; | |
2bba9e53 | 860 | msg->u.ask_channel.monitor = monitor; |
567eb353 | 861 | msg->u.ask_channel.ust_app_uid = ust_app_uid; |
f515d318 | 862 | msg->u.ask_channel.blocking_timeout = blocking_timeout; |
ffe60014 DG |
863 | |
864 | memcpy(msg->u.ask_channel.uuid, uuid, sizeof(msg->u.ask_channel.uuid)); | |
865 | ||
10a50311 JD |
866 | if (pathname) { |
867 | strncpy(msg->u.ask_channel.pathname, pathname, | |
868 | sizeof(msg->u.ask_channel.pathname)); | |
869 | msg->u.ask_channel.pathname[sizeof(msg->u.ask_channel.pathname)-1] = '\0'; | |
870 | } | |
ffe60014 DG |
871 | |
872 | strncpy(msg->u.ask_channel.name, name, sizeof(msg->u.ask_channel.name)); | |
873 | msg->u.ask_channel.name[sizeof(msg->u.ask_channel.name) - 1] = '\0'; | |
d7ba1388 | 874 | |
3d071855 MD |
875 | if (root_shm_path) { |
876 | strncpy(msg->u.ask_channel.root_shm_path, root_shm_path, | |
877 | sizeof(msg->u.ask_channel.root_shm_path)); | |
878 | msg->u.ask_channel.root_shm_path[sizeof(msg->u.ask_channel.root_shm_path) - 1] = '\0'; | |
879 | } | |
d7ba1388 MD |
880 | if (shm_path) { |
881 | strncpy(msg->u.ask_channel.shm_path, shm_path, | |
882 | sizeof(msg->u.ask_channel.shm_path)); | |
883 | msg->u.ask_channel.shm_path[sizeof(msg->u.ask_channel.shm_path) - 1] = '\0'; | |
884 | } | |
ffe60014 DG |
885 | } |
886 | ||
00e2e675 DG |
887 | /* |
888 | * Init channel communication message structure. | |
889 | */ | |
890 | void consumer_init_channel_comm_msg(struct lttcomm_consumer_msg *msg, | |
891 | enum lttng_consumer_command cmd, | |
d88aee68 | 892 | uint64_t channel_key, |
ffe60014 DG |
893 | uint64_t session_id, |
894 | const char *pathname, | |
895 | uid_t uid, | |
896 | gid_t gid, | |
d88aee68 | 897 | uint64_t relayd_id, |
c30aaa51 | 898 | const char *name, |
ffe60014 DG |
899 | unsigned int nb_init_streams, |
900 | enum lttng_event_output output, | |
1624d5b7 JD |
901 | int type, |
902 | uint64_t tracefile_size, | |
2bba9e53 | 903 | uint64_t tracefile_count, |
ecc48a90 | 904 | unsigned int monitor, |
e9404c27 JG |
905 | unsigned int live_timer_interval, |
906 | unsigned int monitor_timer_interval) | |
00e2e675 DG |
907 | { |
908 | assert(msg); | |
909 | ||
00e2e675 DG |
910 | /* Zeroed structure */ |
911 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
912 | ||
913 | /* Send channel */ | |
914 | msg->cmd_type = cmd; | |
915 | msg->u.channel.channel_key = channel_key; | |
ffe60014 DG |
916 | msg->u.channel.session_id = session_id; |
917 | msg->u.channel.uid = uid; | |
918 | msg->u.channel.gid = gid; | |
919 | msg->u.channel.relayd_id = relayd_id; | |
c30aaa51 | 920 | msg->u.channel.nb_init_streams = nb_init_streams; |
ffe60014 DG |
921 | msg->u.channel.output = output; |
922 | msg->u.channel.type = type; | |
1624d5b7 JD |
923 | msg->u.channel.tracefile_size = tracefile_size; |
924 | msg->u.channel.tracefile_count = tracefile_count; | |
2bba9e53 | 925 | msg->u.channel.monitor = monitor; |
ecc48a90 | 926 | msg->u.channel.live_timer_interval = live_timer_interval; |
e9404c27 | 927 | msg->u.channel.monitor_timer_interval = monitor_timer_interval; |
ffe60014 DG |
928 | |
929 | strncpy(msg->u.channel.pathname, pathname, | |
930 | sizeof(msg->u.channel.pathname)); | |
931 | msg->u.channel.pathname[sizeof(msg->u.channel.pathname) - 1] = '\0'; | |
932 | ||
933 | strncpy(msg->u.channel.name, name, sizeof(msg->u.channel.name)); | |
934 | msg->u.channel.name[sizeof(msg->u.channel.name) - 1] = '\0'; | |
00e2e675 DG |
935 | } |
936 | ||
937 | /* | |
938 | * Init stream communication message structure. | |
939 | */ | |
940 | void consumer_init_stream_comm_msg(struct lttcomm_consumer_msg *msg, | |
941 | enum lttng_consumer_command cmd, | |
d88aee68 DG |
942 | uint64_t channel_key, |
943 | uint64_t stream_key, | |
ffe60014 | 944 | int cpu) |
00e2e675 DG |
945 | { |
946 | assert(msg); | |
947 | ||
948 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
949 | ||
00e2e675 DG |
950 | msg->cmd_type = cmd; |
951 | msg->u.stream.channel_key = channel_key; | |
952 | msg->u.stream.stream_key = stream_key; | |
ffe60014 | 953 | msg->u.stream.cpu = cpu; |
00e2e675 DG |
954 | } |
955 | ||
a4baae1b JD |
956 | void consumer_init_streams_sent_comm_msg(struct lttcomm_consumer_msg *msg, |
957 | enum lttng_consumer_command cmd, | |
958 | uint64_t channel_key, uint64_t net_seq_idx) | |
959 | { | |
960 | assert(msg); | |
961 | ||
962 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
963 | ||
964 | msg->cmd_type = cmd; | |
965 | msg->u.sent_streams.channel_key = channel_key; | |
966 | msg->u.sent_streams.net_seq_idx = net_seq_idx; | |
967 | } | |
968 | ||
00e2e675 DG |
969 | /* |
970 | * Send stream communication structure to the consumer. | |
971 | */ | |
f50f23d9 DG |
972 | int consumer_send_stream(struct consumer_socket *sock, |
973 | struct consumer_output *dst, struct lttcomm_consumer_msg *msg, | |
974 | int *fds, size_t nb_fd) | |
00e2e675 DG |
975 | { |
976 | int ret; | |
977 | ||
978 | assert(msg); | |
979 | assert(dst); | |
f50f23d9 | 980 | assert(sock); |
ffe60014 | 981 | assert(fds); |
00e2e675 | 982 | |
52898cb1 | 983 | ret = consumer_send_msg(sock, msg); |
f50f23d9 DG |
984 | if (ret < 0) { |
985 | goto error; | |
986 | } | |
987 | ||
00e2e675 DG |
988 | ret = consumer_send_fds(sock, fds, nb_fd); |
989 | if (ret < 0) { | |
990 | goto error; | |
991 | } | |
992 | ||
993 | error: | |
994 | return ret; | |
995 | } | |
37278a1e DG |
996 | |
997 | /* | |
998 | * Send relayd socket to consumer associated with a session name. | |
999 | * | |
1aabd7d3 JG |
1000 | * The consumer socket lock must be held by the caller. |
1001 | * | |
37278a1e DG |
1002 | * On success return positive value. On error, negative value. |
1003 | */ | |
f50f23d9 | 1004 | int consumer_send_relayd_socket(struct consumer_socket *consumer_sock, |
6151a90f | 1005 | struct lttcomm_relayd_sock *rsock, struct consumer_output *consumer, |
d3e2ba59 JD |
1006 | enum lttng_stream_type type, uint64_t session_id, |
1007 | char *session_name, char *hostname, int session_live_timer) | |
37278a1e DG |
1008 | { |
1009 | int ret; | |
1010 | struct lttcomm_consumer_msg msg; | |
1011 | ||
1012 | /* Code flow error. Safety net. */ | |
6151a90f | 1013 | assert(rsock); |
37278a1e | 1014 | assert(consumer); |
f50f23d9 | 1015 | assert(consumer_sock); |
37278a1e | 1016 | |
53efb85a | 1017 | memset(&msg, 0, sizeof(msg)); |
37278a1e DG |
1018 | /* Bail out if consumer is disabled */ |
1019 | if (!consumer->enabled) { | |
f73fabfd | 1020 | ret = LTTNG_OK; |
37278a1e DG |
1021 | goto error; |
1022 | } | |
1023 | ||
d3e2ba59 JD |
1024 | if (type == LTTNG_STREAM_CONTROL) { |
1025 | ret = relayd_create_session(rsock, | |
1026 | &msg.u.relayd_sock.relayd_session_id, | |
7d2f7452 DG |
1027 | session_name, hostname, session_live_timer, |
1028 | consumer->snapshot); | |
d3e2ba59 JD |
1029 | if (ret < 0) { |
1030 | /* Close the control socket. */ | |
1031 | (void) relayd_close(rsock); | |
1032 | goto error; | |
1033 | } | |
1034 | } | |
1035 | ||
37278a1e DG |
1036 | msg.cmd_type = LTTNG_CONSUMER_ADD_RELAYD_SOCKET; |
1037 | /* | |
1038 | * Assign network consumer output index using the temporary consumer since | |
1039 | * this call should only be made from within a set_consumer_uri() function | |
1040 | * call in the session daemon. | |
1041 | */ | |
1042 | msg.u.relayd_sock.net_index = consumer->net_seq_index; | |
1043 | msg.u.relayd_sock.type = type; | |
46e6455f | 1044 | msg.u.relayd_sock.session_id = session_id; |
6151a90f | 1045 | memcpy(&msg.u.relayd_sock.sock, rsock, sizeof(msg.u.relayd_sock.sock)); |
37278a1e | 1046 | |
9363801e | 1047 | DBG3("Sending relayd sock info to consumer on %d", *consumer_sock->fd_ptr); |
52898cb1 | 1048 | ret = consumer_send_msg(consumer_sock, &msg); |
f50f23d9 DG |
1049 | if (ret < 0) { |
1050 | goto error; | |
1051 | } | |
1052 | ||
37278a1e | 1053 | DBG3("Sending relayd socket file descriptor to consumer"); |
6151a90f | 1054 | ret = consumer_send_fds(consumer_sock, &rsock->sock.fd, 1); |
37278a1e DG |
1055 | if (ret < 0) { |
1056 | goto error; | |
1057 | } | |
1058 | ||
1059 | DBG2("Consumer relayd socket sent"); | |
1060 | ||
1061 | error: | |
1062 | return ret; | |
1063 | } | |
173af62f | 1064 | |
e9404c27 JG |
1065 | int consumer_send_channel_monitor_pipe(struct consumer_socket *consumer_sock, |
1066 | int pipe) | |
1067 | { | |
1068 | int ret; | |
1069 | struct lttcomm_consumer_msg msg; | |
1070 | ||
1071 | /* Code flow error. Safety net. */ | |
1072 | ||
1073 | memset(&msg, 0, sizeof(msg)); | |
1074 | msg.cmd_type = LTTNG_CONSUMER_SET_CHANNEL_MONITOR_PIPE; | |
1075 | ||
e4049c75 | 1076 | pthread_mutex_lock(consumer_sock->lock); |
e9404c27 JG |
1077 | DBG3("Sending set_channel_monitor_pipe command to consumer"); |
1078 | ret = consumer_send_msg(consumer_sock, &msg); | |
1079 | if (ret < 0) { | |
1080 | goto error; | |
1081 | } | |
1082 | ||
1083 | DBG3("Sending channel monitoring pipe %d to consumer on socket %d", | |
1084 | pipe, *consumer_sock->fd_ptr); | |
1085 | ret = consumer_send_fds(consumer_sock, &pipe, 1); | |
1086 | if (ret < 0) { | |
1087 | goto error; | |
1088 | } | |
1089 | ||
1090 | DBG2("Channel monitoring pipe successfully sent"); | |
1091 | error: | |
e4049c75 | 1092 | pthread_mutex_unlock(consumer_sock->lock); |
e9404c27 JG |
1093 | return ret; |
1094 | } | |
1095 | ||
173af62f | 1096 | /* |
2f77fc4b DG |
1097 | * Set consumer subdirectory using the session name and a generated datetime if |
1098 | * needed. This is appended to the current subdirectory. | |
173af62f | 1099 | */ |
2f77fc4b DG |
1100 | int consumer_set_subdir(struct consumer_output *consumer, |
1101 | const char *session_name) | |
173af62f | 1102 | { |
2f77fc4b DG |
1103 | int ret = 0; |
1104 | unsigned int have_default_name = 0; | |
1105 | char datetime[16], tmp_path[PATH_MAX]; | |
1106 | time_t rawtime; | |
1107 | struct tm *timeinfo; | |
173af62f DG |
1108 | |
1109 | assert(consumer); | |
2f77fc4b DG |
1110 | assert(session_name); |
1111 | ||
1112 | memset(tmp_path, 0, sizeof(tmp_path)); | |
1113 | ||
1114 | /* Flag if we have a default session. */ | |
1115 | if (strncmp(session_name, DEFAULT_SESSION_NAME "-", | |
1116 | strlen(DEFAULT_SESSION_NAME) + 1) == 0) { | |
1117 | have_default_name = 1; | |
1118 | } else { | |
1119 | /* Get date and time for session path */ | |
1120 | time(&rawtime); | |
1121 | timeinfo = localtime(&rawtime); | |
1122 | strftime(datetime, sizeof(datetime), "%Y%m%d-%H%M%S", timeinfo); | |
173af62f DG |
1123 | } |
1124 | ||
2f77fc4b DG |
1125 | if (have_default_name) { |
1126 | ret = snprintf(tmp_path, sizeof(tmp_path), | |
1127 | "%s/%s", consumer->subdir, session_name); | |
1128 | } else { | |
1129 | ret = snprintf(tmp_path, sizeof(tmp_path), | |
1130 | "%s/%s-%s/", consumer->subdir, session_name, datetime); | |
1131 | } | |
173af62f | 1132 | if (ret < 0) { |
2f77fc4b | 1133 | PERROR("snprintf session name date"); |
173af62f DG |
1134 | goto error; |
1135 | } | |
1136 | ||
2edf492f MD |
1137 | if (lttng_strncpy(consumer->subdir, tmp_path, |
1138 | sizeof(consumer->subdir))) { | |
1139 | ret = -EINVAL; | |
1140 | goto error; | |
1141 | } | |
2f77fc4b | 1142 | DBG2("Consumer subdir set to %s", consumer->subdir); |
173af62f DG |
1143 | |
1144 | error: | |
1145 | return ret; | |
1146 | } | |
806e2684 DG |
1147 | |
1148 | /* | |
5e280d77 MD |
1149 | * Ask the consumer if the data is pending for the specific session id. |
1150 | * Returns 1 if data is pending, 0 otherwise, or < 0 on error. | |
806e2684 | 1151 | */ |
d88aee68 | 1152 | int consumer_is_data_pending(uint64_t session_id, |
806e2684 DG |
1153 | struct consumer_output *consumer) |
1154 | { | |
1155 | int ret; | |
6d805429 | 1156 | int32_t ret_code = 0; /* Default is that the data is NOT pending */ |
806e2684 DG |
1157 | struct consumer_socket *socket; |
1158 | struct lttng_ht_iter iter; | |
1159 | struct lttcomm_consumer_msg msg; | |
1160 | ||
1161 | assert(consumer); | |
1162 | ||
53efb85a | 1163 | DBG3("Consumer data pending for id %" PRIu64, session_id); |
806e2684 | 1164 | |
53efb85a MD |
1165 | memset(&msg, 0, sizeof(msg)); |
1166 | msg.cmd_type = LTTNG_CONSUMER_DATA_PENDING; | |
d88aee68 | 1167 | msg.u.data_pending.session_id = session_id; |
806e2684 | 1168 | |
c8f59ee5 | 1169 | /* Send command for each consumer */ |
b82c5c4d | 1170 | rcu_read_lock(); |
806e2684 DG |
1171 | cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket, |
1172 | node.node) { | |
806e2684 | 1173 | pthread_mutex_lock(socket->lock); |
52898cb1 | 1174 | ret = consumer_socket_send(socket, &msg, sizeof(msg)); |
806e2684 | 1175 | if (ret < 0) { |
806e2684 | 1176 | pthread_mutex_unlock(socket->lock); |
b82c5c4d | 1177 | goto error_unlock; |
806e2684 DG |
1178 | } |
1179 | ||
f50f23d9 DG |
1180 | /* |
1181 | * No need for a recv reply status because the answer to the command is | |
1182 | * the reply status message. | |
1183 | */ | |
1184 | ||
52898cb1 DG |
1185 | ret = consumer_socket_recv(socket, &ret_code, sizeof(ret_code)); |
1186 | if (ret < 0) { | |
806e2684 | 1187 | pthread_mutex_unlock(socket->lock); |
b82c5c4d | 1188 | goto error_unlock; |
806e2684 | 1189 | } |
806e2684 DG |
1190 | pthread_mutex_unlock(socket->lock); |
1191 | ||
6d805429 | 1192 | if (ret_code == 1) { |
806e2684 DG |
1193 | break; |
1194 | } | |
1195 | } | |
b82c5c4d | 1196 | rcu_read_unlock(); |
806e2684 | 1197 | |
d88aee68 DG |
1198 | DBG("Consumer data is %s pending for session id %" PRIu64, |
1199 | ret_code == 1 ? "" : "NOT", session_id); | |
806e2684 DG |
1200 | return ret_code; |
1201 | ||
b82c5c4d DG |
1202 | error_unlock: |
1203 | rcu_read_unlock(); | |
806e2684 DG |
1204 | return -1; |
1205 | } | |
7972aab2 DG |
1206 | |
1207 | /* | |
1208 | * Send a flush command to consumer using the given channel key. | |
1209 | * | |
1210 | * Return 0 on success else a negative value. | |
1211 | */ | |
1212 | int consumer_flush_channel(struct consumer_socket *socket, uint64_t key) | |
1213 | { | |
1214 | int ret; | |
1215 | struct lttcomm_consumer_msg msg; | |
1216 | ||
1217 | assert(socket); | |
7972aab2 DG |
1218 | |
1219 | DBG2("Consumer flush channel key %" PRIu64, key); | |
1220 | ||
53efb85a | 1221 | memset(&msg, 0, sizeof(msg)); |
7972aab2 DG |
1222 | msg.cmd_type = LTTNG_CONSUMER_FLUSH_CHANNEL; |
1223 | msg.u.flush_channel.key = key; | |
1224 | ||
1225 | pthread_mutex_lock(socket->lock); | |
1226 | health_code_update(); | |
1227 | ||
1228 | ret = consumer_send_msg(socket, &msg); | |
1229 | if (ret < 0) { | |
1230 | goto end; | |
1231 | } | |
1232 | ||
1233 | end: | |
1234 | health_code_update(); | |
1235 | pthread_mutex_unlock(socket->lock); | |
1236 | return ret; | |
1237 | } | |
1238 | ||
0dd01979 MD |
1239 | /* |
1240 | * Send a clear quiescent command to consumer using the given channel key. | |
1241 | * | |
1242 | * Return 0 on success else a negative value. | |
1243 | */ | |
1244 | int consumer_clear_quiescent_channel(struct consumer_socket *socket, uint64_t key) | |
1245 | { | |
1246 | int ret; | |
1247 | struct lttcomm_consumer_msg msg; | |
1248 | ||
1249 | assert(socket); | |
1250 | ||
1251 | DBG2("Consumer clear quiescent channel key %" PRIu64, key); | |
1252 | ||
1253 | memset(&msg, 0, sizeof(msg)); | |
1254 | msg.cmd_type = LTTNG_CONSUMER_CLEAR_QUIESCENT_CHANNEL; | |
1255 | msg.u.clear_quiescent_channel.key = key; | |
1256 | ||
1257 | pthread_mutex_lock(socket->lock); | |
1258 | health_code_update(); | |
1259 | ||
1260 | ret = consumer_send_msg(socket, &msg); | |
1261 | if (ret < 0) { | |
1262 | goto end; | |
1263 | } | |
1264 | ||
1265 | end: | |
1266 | health_code_update(); | |
1267 | pthread_mutex_unlock(socket->lock); | |
1268 | return ret; | |
1269 | } | |
1270 | ||
7972aab2 | 1271 | /* |
dc2bbdae MD |
1272 | * Send a close metadata command to consumer using the given channel key. |
1273 | * Called with registry lock held. | |
7972aab2 DG |
1274 | * |
1275 | * Return 0 on success else a negative value. | |
1276 | */ | |
1277 | int consumer_close_metadata(struct consumer_socket *socket, | |
1278 | uint64_t metadata_key) | |
1279 | { | |
1280 | int ret; | |
1281 | struct lttcomm_consumer_msg msg; | |
1282 | ||
1283 | assert(socket); | |
7972aab2 DG |
1284 | |
1285 | DBG2("Consumer close metadata channel key %" PRIu64, metadata_key); | |
1286 | ||
53efb85a | 1287 | memset(&msg, 0, sizeof(msg)); |
7972aab2 DG |
1288 | msg.cmd_type = LTTNG_CONSUMER_CLOSE_METADATA; |
1289 | msg.u.close_metadata.key = metadata_key; | |
1290 | ||
1291 | pthread_mutex_lock(socket->lock); | |
1292 | health_code_update(); | |
1293 | ||
1294 | ret = consumer_send_msg(socket, &msg); | |
1295 | if (ret < 0) { | |
1296 | goto end; | |
1297 | } | |
1298 | ||
1299 | end: | |
1300 | health_code_update(); | |
1301 | pthread_mutex_unlock(socket->lock); | |
1302 | return ret; | |
1303 | } | |
1304 | ||
1305 | /* | |
1306 | * Send a setup metdata command to consumer using the given channel key. | |
1307 | * | |
1308 | * Return 0 on success else a negative value. | |
1309 | */ | |
1310 | int consumer_setup_metadata(struct consumer_socket *socket, | |
1311 | uint64_t metadata_key) | |
1312 | { | |
1313 | int ret; | |
1314 | struct lttcomm_consumer_msg msg; | |
1315 | ||
1316 | assert(socket); | |
7972aab2 DG |
1317 | |
1318 | DBG2("Consumer setup metadata channel key %" PRIu64, metadata_key); | |
1319 | ||
53efb85a | 1320 | memset(&msg, 0, sizeof(msg)); |
7972aab2 DG |
1321 | msg.cmd_type = LTTNG_CONSUMER_SETUP_METADATA; |
1322 | msg.u.setup_metadata.key = metadata_key; | |
1323 | ||
1324 | pthread_mutex_lock(socket->lock); | |
1325 | health_code_update(); | |
1326 | ||
1327 | ret = consumer_send_msg(socket, &msg); | |
1328 | if (ret < 0) { | |
1329 | goto end; | |
1330 | } | |
1331 | ||
1332 | end: | |
1333 | health_code_update(); | |
1334 | pthread_mutex_unlock(socket->lock); | |
1335 | return ret; | |
1336 | } | |
1337 | ||
1338 | /* | |
dc2bbdae MD |
1339 | * Send metadata string to consumer. |
1340 | * RCU read-side lock must be held to guarantee existence of socket. | |
7972aab2 DG |
1341 | * |
1342 | * Return 0 on success else a negative value. | |
1343 | */ | |
1344 | int consumer_push_metadata(struct consumer_socket *socket, | |
1345 | uint64_t metadata_key, char *metadata_str, size_t len, | |
93ec662e | 1346 | size_t target_offset, uint64_t version) |
7972aab2 DG |
1347 | { |
1348 | int ret; | |
1349 | struct lttcomm_consumer_msg msg; | |
1350 | ||
1351 | assert(socket); | |
7972aab2 | 1352 | |
9363801e | 1353 | DBG2("Consumer push metadata to consumer socket %d", *socket->fd_ptr); |
7972aab2 | 1354 | |
dc2bbdae MD |
1355 | pthread_mutex_lock(socket->lock); |
1356 | ||
53efb85a | 1357 | memset(&msg, 0, sizeof(msg)); |
7972aab2 DG |
1358 | msg.cmd_type = LTTNG_CONSUMER_PUSH_METADATA; |
1359 | msg.u.push_metadata.key = metadata_key; | |
1360 | msg.u.push_metadata.target_offset = target_offset; | |
1361 | msg.u.push_metadata.len = len; | |
93ec662e | 1362 | msg.u.push_metadata.version = version; |
7972aab2 | 1363 | |
7972aab2 DG |
1364 | health_code_update(); |
1365 | ret = consumer_send_msg(socket, &msg); | |
331744e3 | 1366 | if (ret < 0 || len == 0) { |
7972aab2 DG |
1367 | goto end; |
1368 | } | |
1369 | ||
9363801e DG |
1370 | DBG3("Consumer pushing metadata on sock %d of len %zu", *socket->fd_ptr, |
1371 | len); | |
7972aab2 | 1372 | |
52898cb1 | 1373 | ret = consumer_socket_send(socket, metadata_str, len); |
7972aab2 DG |
1374 | if (ret < 0) { |
1375 | goto end; | |
1376 | } | |
1377 | ||
1378 | health_code_update(); | |
1379 | ret = consumer_recv_status_reply(socket); | |
1380 | if (ret < 0) { | |
1381 | goto end; | |
1382 | } | |
1383 | ||
1384 | end: | |
dc2bbdae | 1385 | pthread_mutex_unlock(socket->lock); |
7972aab2 | 1386 | health_code_update(); |
7972aab2 DG |
1387 | return ret; |
1388 | } | |
6dc3064a DG |
1389 | |
1390 | /* | |
1391 | * Ask the consumer to snapshot a specific channel using the key. | |
1392 | * | |
1393 | * Return 0 on success or else a negative error. | |
1394 | */ | |
1395 | int consumer_snapshot_channel(struct consumer_socket *socket, uint64_t key, | |
1396 | struct snapshot_output *output, int metadata, uid_t uid, gid_t gid, | |
d07ceecd | 1397 | const char *session_path, int wait, uint64_t nb_packets_per_stream) |
6dc3064a DG |
1398 | { |
1399 | int ret; | |
1400 | struct lttcomm_consumer_msg msg; | |
1401 | ||
1402 | assert(socket); | |
6dc3064a DG |
1403 | assert(output); |
1404 | assert(output->consumer); | |
1405 | ||
1406 | DBG("Consumer snapshot channel key %" PRIu64, key); | |
1407 | ||
ee91bab2 | 1408 | memset(&msg, 0, sizeof(msg)); |
6dc3064a DG |
1409 | msg.cmd_type = LTTNG_CONSUMER_SNAPSHOT_CHANNEL; |
1410 | msg.u.snapshot_channel.key = key; | |
d07ceecd | 1411 | msg.u.snapshot_channel.nb_packets_per_stream = nb_packets_per_stream; |
6dc3064a DG |
1412 | msg.u.snapshot_channel.metadata = metadata; |
1413 | ||
1414 | if (output->consumer->type == CONSUMER_DST_NET) { | |
1415 | msg.u.snapshot_channel.relayd_id = output->consumer->net_seq_index; | |
1416 | msg.u.snapshot_channel.use_relayd = 1; | |
1417 | ret = snprintf(msg.u.snapshot_channel.pathname, | |
1bfe7328 DG |
1418 | sizeof(msg.u.snapshot_channel.pathname), |
1419 | "%s/%s-%s-%" PRIu64 "%s", output->consumer->subdir, | |
1420 | output->name, output->datetime, output->nb_snapshot, | |
ee91bab2 | 1421 | session_path); |
6dc3064a DG |
1422 | if (ret < 0) { |
1423 | ret = -LTTNG_ERR_NOMEM; | |
1424 | goto error; | |
1425 | } | |
1426 | } else { | |
1427 | ret = snprintf(msg.u.snapshot_channel.pathname, | |
1bfe7328 DG |
1428 | sizeof(msg.u.snapshot_channel.pathname), |
1429 | "%s/%s-%s-%" PRIu64 "%s", output->consumer->dst.trace_path, | |
1430 | output->name, output->datetime, output->nb_snapshot, | |
1431 | session_path); | |
6dc3064a DG |
1432 | if (ret < 0) { |
1433 | ret = -LTTNG_ERR_NOMEM; | |
1434 | goto error; | |
1435 | } | |
07b86b52 | 1436 | msg.u.snapshot_channel.relayd_id = (uint64_t) -1ULL; |
6dc3064a DG |
1437 | |
1438 | /* Create directory. Ignore if exist. */ | |
1439 | ret = run_as_mkdir_recursive(msg.u.snapshot_channel.pathname, | |
1440 | S_IRWXU | S_IRWXG, uid, gid); | |
1441 | if (ret < 0) { | |
df5b86c8 | 1442 | if (errno != EEXIST) { |
6dc3064a DG |
1443 | ERR("Trace directory creation error"); |
1444 | goto error; | |
1445 | } | |
1446 | } | |
1447 | } | |
1448 | ||
1449 | health_code_update(); | |
705c13ed | 1450 | pthread_mutex_lock(socket->lock); |
6dc3064a | 1451 | ret = consumer_send_msg(socket, &msg); |
705c13ed | 1452 | pthread_mutex_unlock(socket->lock); |
6dc3064a DG |
1453 | if (ret < 0) { |
1454 | goto error; | |
1455 | } | |
1456 | ||
1457 | error: | |
1458 | health_code_update(); | |
1459 | return ret; | |
1460 | } | |
fb83fe64 JD |
1461 | |
1462 | /* | |
1463 | * Ask the consumer the number of discarded events for a channel. | |
1464 | */ | |
1465 | int consumer_get_discarded_events(uint64_t session_id, uint64_t channel_key, | |
1466 | struct consumer_output *consumer, uint64_t *discarded) | |
1467 | { | |
1468 | int ret; | |
1469 | struct consumer_socket *socket; | |
1470 | struct lttng_ht_iter iter; | |
1471 | struct lttcomm_consumer_msg msg; | |
1472 | ||
1473 | assert(consumer); | |
1474 | ||
1475 | DBG3("Consumer discarded events id %" PRIu64, session_id); | |
1476 | ||
1477 | memset(&msg, 0, sizeof(msg)); | |
1478 | msg.cmd_type = LTTNG_CONSUMER_DISCARDED_EVENTS; | |
1479 | msg.u.discarded_events.session_id = session_id; | |
1480 | msg.u.discarded_events.channel_key = channel_key; | |
1481 | ||
1482 | *discarded = 0; | |
1483 | ||
1484 | /* Send command for each consumer */ | |
1485 | rcu_read_lock(); | |
1486 | cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket, | |
1487 | node.node) { | |
1488 | uint64_t consumer_discarded = 0; | |
1489 | pthread_mutex_lock(socket->lock); | |
1490 | ret = consumer_socket_send(socket, &msg, sizeof(msg)); | |
1491 | if (ret < 0) { | |
1492 | pthread_mutex_unlock(socket->lock); | |
1493 | goto end; | |
1494 | } | |
1495 | ||
1496 | /* | |
1497 | * No need for a recv reply status because the answer to the | |
1498 | * command is the reply status message. | |
1499 | */ | |
1500 | ret = consumer_socket_recv(socket, &consumer_discarded, | |
1501 | sizeof(consumer_discarded)); | |
1502 | if (ret < 0) { | |
1503 | ERR("get discarded events"); | |
1504 | pthread_mutex_unlock(socket->lock); | |
1505 | goto end; | |
1506 | } | |
1507 | pthread_mutex_unlock(socket->lock); | |
1508 | *discarded += consumer_discarded; | |
1509 | } | |
1510 | ret = 0; | |
1511 | DBG("Consumer discarded %" PRIu64 " events in session id %" PRIu64, | |
1512 | *discarded, session_id); | |
1513 | ||
1514 | end: | |
1515 | rcu_read_unlock(); | |
1516 | return ret; | |
1517 | } | |
1518 | ||
1519 | /* | |
1520 | * Ask the consumer the number of lost packets for a channel. | |
1521 | */ | |
1522 | int consumer_get_lost_packets(uint64_t session_id, uint64_t channel_key, | |
1523 | struct consumer_output *consumer, uint64_t *lost) | |
1524 | { | |
1525 | int ret; | |
1526 | struct consumer_socket *socket; | |
1527 | struct lttng_ht_iter iter; | |
1528 | struct lttcomm_consumer_msg msg; | |
1529 | ||
1530 | assert(consumer); | |
1531 | ||
1532 | DBG3("Consumer lost packets id %" PRIu64, session_id); | |
1533 | ||
1534 | memset(&msg, 0, sizeof(msg)); | |
1535 | msg.cmd_type = LTTNG_CONSUMER_LOST_PACKETS; | |
1536 | msg.u.lost_packets.session_id = session_id; | |
1537 | msg.u.lost_packets.channel_key = channel_key; | |
1538 | ||
1539 | *lost = 0; | |
1540 | ||
1541 | /* Send command for each consumer */ | |
1542 | rcu_read_lock(); | |
1543 | cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket, | |
1544 | node.node) { | |
1545 | uint64_t consumer_lost = 0; | |
1546 | pthread_mutex_lock(socket->lock); | |
1547 | ret = consumer_socket_send(socket, &msg, sizeof(msg)); | |
1548 | if (ret < 0) { | |
1549 | pthread_mutex_unlock(socket->lock); | |
1550 | goto end; | |
1551 | } | |
1552 | ||
1553 | /* | |
1554 | * No need for a recv reply status because the answer to the | |
1555 | * command is the reply status message. | |
1556 | */ | |
1557 | ret = consumer_socket_recv(socket, &consumer_lost, | |
1558 | sizeof(consumer_lost)); | |
1559 | if (ret < 0) { | |
1560 | ERR("get lost packets"); | |
1561 | pthread_mutex_unlock(socket->lock); | |
1562 | goto end; | |
1563 | } | |
1564 | pthread_mutex_unlock(socket->lock); | |
1565 | *lost += consumer_lost; | |
1566 | } | |
1567 | ret = 0; | |
1568 | DBG("Consumer lost %" PRIu64 " packets in session id %" PRIu64, | |
1569 | *lost, session_id); | |
1570 | ||
1571 | end: | |
1572 | rcu_read_unlock(); | |
1573 | return ret; | |
1574 | } | |
38cd0ad9 JR |
1575 | |
1576 | int consumer_clear_channel(struct consumer_socket *socket, uint64_t key, | |
1577 | struct consumer_output *output) | |
1578 | { | |
1579 | int ret; | |
1580 | struct lttcomm_consumer_msg msg; | |
1581 | ||
1582 | assert(socket); | |
1583 | ||
1584 | DBG("Consumer clear channel %" PRIu64, key); | |
1585 | ||
1586 | memset(&msg, 0, sizeof(msg)); | |
1587 | msg.cmd_type = LTTNG_CONSUMER_CLEAR_CHANNEL; | |
1588 | msg.u.clear_channel.key = key; | |
1589 | ||
c7496bc7 MD |
1590 | health_code_update(); |
1591 | ||
1592 | pthread_mutex_lock(socket->lock); | |
1593 | ret = consumer_send_msg(socket, &msg); | |
1594 | if (ret < 0) { | |
1595 | goto error_socket; | |
38cd0ad9 | 1596 | } |
c7496bc7 MD |
1597 | |
1598 | error_socket: | |
1599 | pthread_mutex_unlock(socket->lock); | |
1600 | ||
1601 | health_code_update(); | |
1602 | return ret; | |
1603 | } | |
1604 | ||
1605 | static | |
1606 | int consumer_msg_clear_session(struct consumer_socket *socket, uint64_t session_id, | |
1607 | struct consumer_output *output) | |
1608 | { | |
1609 | int ret; | |
1610 | struct lttcomm_consumer_msg msg; | |
1611 | ||
1612 | assert(socket); | |
1613 | ||
1614 | DBG("Consumer clear session %" PRIu64, session_id); | |
1615 | ||
1616 | memset(&msg, 0, sizeof(msg)); | |
1617 | msg.cmd_type = LTTNG_CONSUMER_CLEAR_SESSION; | |
1618 | msg.u.clear_session.session_id = session_id; | |
1619 | ||
38cd0ad9 JR |
1620 | health_code_update(); |
1621 | ||
1622 | pthread_mutex_lock(socket->lock); | |
1623 | ret = consumer_send_msg(socket, &msg); | |
1624 | if (ret < 0) { | |
1625 | goto error_socket; | |
1626 | } | |
1627 | ||
1628 | error_socket: | |
1629 | pthread_mutex_unlock(socket->lock); | |
1630 | ||
38cd0ad9 JR |
1631 | health_code_update(); |
1632 | return ret; | |
1633 | } | |
c7496bc7 MD |
1634 | |
1635 | int consumer_clear_session(struct ltt_session *session) | |
1636 | { | |
1637 | struct ltt_ust_session *usess = session->ust_session; | |
1638 | struct ltt_kernel_session *ksess = session->kernel_session; | |
1639 | int ret; | |
1640 | ||
1641 | rcu_read_lock(); | |
1642 | if (ksess) { | |
1643 | struct consumer_socket *socket; | |
1644 | struct lttng_ht_iter iter; | |
1645 | ||
1646 | cds_lfht_for_each_entry(ksess->consumer->socks->ht, &iter.iter, | |
1647 | socket, node.node) { | |
1648 | ret = consumer_msg_clear_session(socket, session->id, | |
1649 | ksess->consumer); | |
1650 | if (ret < 0) { | |
1651 | goto error; | |
1652 | } | |
1653 | } | |
1654 | } | |
1655 | if (usess) { | |
1656 | struct consumer_socket *socket; | |
1657 | struct lttng_ht_iter iter; | |
1658 | ||
1659 | cds_lfht_for_each_entry(usess->consumer->socks->ht, &iter.iter, | |
1660 | socket, node.node) { | |
1661 | ret = consumer_msg_clear_session(socket, session->id, | |
1662 | usess->consumer); | |
1663 | if (ret < 0) { | |
1664 | goto error; | |
1665 | } | |
1666 | } | |
1667 | } | |
1668 | rcu_read_unlock(); | |
1669 | return 0; | |
1670 | error: | |
1671 | rcu_read_unlock(); | |
1672 | return ret; | |
1673 | } |