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