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 | ||
18 | #define _GNU_SOURCE | |
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> | |
31 | ||
32 | #include "consumer.h" | |
7972aab2 DG |
33 | #include "health.h" |
34 | #include "ust-app.h" | |
0b2dc8df | 35 | #include "utils.h" |
00e2e675 | 36 | |
52898cb1 DG |
37 | /* |
38 | * Send a data payload using a given consumer socket of size len. | |
39 | * | |
40 | * The consumer socket lock MUST be acquired before calling this since this | |
41 | * function can change the fd value. | |
42 | * | |
43 | * Return 0 on success else a negative value on error. | |
44 | */ | |
45 | int consumer_socket_send(struct consumer_socket *socket, void *msg, size_t len) | |
46 | { | |
47 | int fd; | |
48 | ssize_t size; | |
49 | ||
50 | assert(socket); | |
9363801e | 51 | assert(socket->fd_ptr); |
52898cb1 DG |
52 | assert(msg); |
53 | ||
54 | /* Consumer socket is invalid. Stopping. */ | |
9363801e | 55 | fd = *socket->fd_ptr; |
52898cb1 DG |
56 | if (fd < 0) { |
57 | goto error; | |
58 | } | |
59 | ||
60 | size = lttcomm_send_unix_sock(fd, msg, len); | |
61 | if (size < 0) { | |
62 | /* The above call will print a PERROR on error. */ | |
63 | DBG("Error when sending data to consumer on sock %d", fd); | |
64 | /* | |
92db7cdc DG |
65 | * At this point, the socket is not usable anymore thus closing it and |
66 | * setting the file descriptor to -1 so it is not reused. | |
52898cb1 DG |
67 | */ |
68 | ||
69 | /* This call will PERROR on error. */ | |
70 | (void) lttcomm_close_unix_sock(fd); | |
9363801e | 71 | *socket->fd_ptr = -1; |
52898cb1 DG |
72 | goto error; |
73 | } | |
74 | ||
75 | return 0; | |
76 | ||
77 | error: | |
78 | return -1; | |
79 | } | |
80 | ||
81 | /* | |
82 | * Receive a data payload using a given consumer socket of size len. | |
83 | * | |
84 | * The consumer socket lock MUST be acquired before calling this since this | |
85 | * function can change the fd value. | |
86 | * | |
87 | * Return 0 on success else a negative value on error. | |
88 | */ | |
89 | int consumer_socket_recv(struct consumer_socket *socket, void *msg, size_t len) | |
90 | { | |
91 | int fd; | |
92 | ssize_t size; | |
93 | ||
94 | assert(socket); | |
9363801e | 95 | assert(socket->fd_ptr); |
52898cb1 DG |
96 | assert(msg); |
97 | ||
98 | /* Consumer socket is invalid. Stopping. */ | |
9363801e | 99 | fd = *socket->fd_ptr; |
52898cb1 DG |
100 | if (fd < 0) { |
101 | goto error; | |
102 | } | |
103 | ||
104 | size = lttcomm_recv_unix_sock(fd, msg, len); | |
105 | if (size <= 0) { | |
106 | /* The above call will print a PERROR on error. */ | |
107 | DBG("Error when receiving data from the consumer socket %d", fd); | |
108 | /* | |
92db7cdc DG |
109 | * At this point, the socket is not usable anymore thus closing it and |
110 | * setting the file descriptor to -1 so it is not reused. | |
52898cb1 DG |
111 | */ |
112 | ||
113 | /* This call will PERROR on error. */ | |
114 | (void) lttcomm_close_unix_sock(fd); | |
9363801e | 115 | *socket->fd_ptr = -1; |
52898cb1 DG |
116 | goto error; |
117 | } | |
118 | ||
119 | return 0; | |
120 | ||
121 | error: | |
122 | return -1; | |
123 | } | |
124 | ||
f50f23d9 DG |
125 | /* |
126 | * Receive a reply command status message from the consumer. Consumer socket | |
127 | * lock MUST be acquired before calling this function. | |
128 | * | |
129 | * Return 0 on success, -1 on recv error or a negative lttng error code which | |
130 | * was possibly returned by the consumer. | |
131 | */ | |
132 | int consumer_recv_status_reply(struct consumer_socket *sock) | |
133 | { | |
134 | int ret; | |
135 | struct lttcomm_consumer_status_msg reply; | |
136 | ||
137 | assert(sock); | |
138 | ||
52898cb1 DG |
139 | ret = consumer_socket_recv(sock, &reply, sizeof(reply)); |
140 | if (ret < 0) { | |
f50f23d9 DG |
141 | goto end; |
142 | } | |
143 | ||
144 | if (reply.ret_code == LTTNG_OK) { | |
145 | /* All good. */ | |
146 | ret = 0; | |
147 | } else { | |
148 | ret = -reply.ret_code; | |
ffe60014 | 149 | DBG("Consumer ret code %d", ret); |
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. */ | |
180 | if (reply.ret_code != LTTNG_OK) { | |
181 | ret = -1; | |
182 | goto end; | |
183 | } | |
184 | ||
185 | *key = reply.key; | |
186 | *stream_count = reply.stream_count; | |
187 | ||
188 | end: | |
189 | return ret; | |
190 | } | |
191 | ||
2f77fc4b DG |
192 | /* |
193 | * Send destroy relayd command to consumer. | |
194 | * | |
195 | * On success return positive value. On error, negative value. | |
196 | */ | |
197 | int consumer_send_destroy_relayd(struct consumer_socket *sock, | |
198 | struct consumer_output *consumer) | |
199 | { | |
200 | int ret; | |
201 | struct lttcomm_consumer_msg msg; | |
202 | ||
203 | assert(consumer); | |
204 | assert(sock); | |
205 | ||
9363801e | 206 | DBG2("Sending destroy relayd command to consumer sock %d", *sock->fd_ptr); |
2f77fc4b | 207 | |
2f77fc4b DG |
208 | msg.cmd_type = LTTNG_CONSUMER_DESTROY_RELAYD; |
209 | msg.u.destroy_relayd.net_seq_idx = consumer->net_seq_index; | |
210 | ||
211 | pthread_mutex_lock(sock->lock); | |
52898cb1 | 212 | ret = consumer_socket_send(sock, &msg, sizeof(msg)); |
2f77fc4b | 213 | if (ret < 0) { |
52898cb1 | 214 | goto error; |
2f77fc4b DG |
215 | } |
216 | ||
f50f23d9 DG |
217 | /* Don't check the return value. The caller will do it. */ |
218 | ret = consumer_recv_status_reply(sock); | |
219 | ||
2f77fc4b DG |
220 | DBG2("Consumer send destroy relayd command done"); |
221 | ||
222 | error: | |
52898cb1 | 223 | pthread_mutex_unlock(sock->lock); |
2f77fc4b DG |
224 | return ret; |
225 | } | |
226 | ||
227 | /* | |
228 | * For each consumer socket in the consumer output object, send a destroy | |
229 | * relayd command. | |
230 | */ | |
231 | void consumer_output_send_destroy_relayd(struct consumer_output *consumer) | |
232 | { | |
2f77fc4b DG |
233 | struct lttng_ht_iter iter; |
234 | struct consumer_socket *socket; | |
235 | ||
236 | assert(consumer); | |
237 | ||
238 | /* Destroy any relayd connection */ | |
6dc3064a | 239 | if (consumer->type == CONSUMER_DST_NET) { |
2f77fc4b DG |
240 | rcu_read_lock(); |
241 | cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket, | |
242 | node.node) { | |
c617c0c6 MD |
243 | int ret; |
244 | ||
2f77fc4b DG |
245 | /* Send destroy relayd command */ |
246 | ret = consumer_send_destroy_relayd(socket, consumer); | |
247 | if (ret < 0) { | |
c5c45efa | 248 | DBG("Unable to send destroy relayd command to consumer"); |
2f77fc4b DG |
249 | /* Continue since we MUST delete everything at this point. */ |
250 | } | |
251 | } | |
252 | rcu_read_unlock(); | |
253 | } | |
254 | } | |
255 | ||
a4b92340 DG |
256 | /* |
257 | * From a consumer_data structure, allocate and add a consumer socket to the | |
258 | * consumer output. | |
259 | * | |
260 | * Return 0 on success, else negative value on error | |
261 | */ | |
262 | int consumer_create_socket(struct consumer_data *data, | |
263 | struct consumer_output *output) | |
264 | { | |
265 | int ret = 0; | |
266 | struct consumer_socket *socket; | |
267 | ||
268 | assert(data); | |
269 | ||
270 | if (output == NULL || data->cmd_sock < 0) { | |
271 | /* | |
272 | * Not an error. Possible there is simply not spawned consumer or it's | |
273 | * disabled for the tracing session asking the socket. | |
274 | */ | |
275 | goto error; | |
276 | } | |
277 | ||
278 | rcu_read_lock(); | |
279 | socket = consumer_find_socket(data->cmd_sock, output); | |
280 | rcu_read_unlock(); | |
281 | if (socket == NULL) { | |
4ce514c4 | 282 | socket = consumer_allocate_socket(&data->cmd_sock); |
a4b92340 DG |
283 | if (socket == NULL) { |
284 | ret = -1; | |
285 | goto error; | |
286 | } | |
287 | ||
2f77fc4b | 288 | socket->registered = 0; |
a4b92340 DG |
289 | socket->lock = &data->lock; |
290 | rcu_read_lock(); | |
291 | consumer_add_socket(socket, output); | |
292 | rcu_read_unlock(); | |
293 | } | |
294 | ||
6dc3064a DG |
295 | socket->type = data->type; |
296 | ||
a4b92340 DG |
297 | DBG3("Consumer socket created (fd: %d) and added to output", |
298 | data->cmd_sock); | |
299 | ||
300 | error: | |
301 | return ret; | |
302 | } | |
303 | ||
7972aab2 DG |
304 | /* |
305 | * Return the consumer socket from the given consumer output with the right | |
306 | * bitness. On error, returns NULL. | |
307 | * | |
308 | * The caller MUST acquire a rcu read side lock and keep it until the socket | |
309 | * object reference is not needed anymore. | |
310 | */ | |
311 | struct consumer_socket *consumer_find_socket_by_bitness(int bits, | |
312 | struct consumer_output *consumer) | |
313 | { | |
314 | int consumer_fd; | |
315 | struct consumer_socket *socket = NULL; | |
316 | ||
317 | switch (bits) { | |
318 | case 64: | |
319 | consumer_fd = uatomic_read(&ust_consumerd64_fd); | |
320 | break; | |
321 | case 32: | |
322 | consumer_fd = uatomic_read(&ust_consumerd32_fd); | |
323 | break; | |
324 | default: | |
325 | assert(0); | |
326 | goto end; | |
327 | } | |
328 | ||
329 | socket = consumer_find_socket(consumer_fd, consumer); | |
330 | if (!socket) { | |
331 | ERR("Consumer socket fd %d not found in consumer obj %p", | |
332 | consumer_fd, consumer); | |
333 | } | |
334 | ||
335 | end: | |
336 | return socket; | |
337 | } | |
338 | ||
173af62f DG |
339 | /* |
340 | * Find a consumer_socket in a consumer_output hashtable. Read side lock must | |
341 | * be acquired before calling this function and across use of the | |
342 | * returned consumer_socket. | |
343 | */ | |
344 | struct consumer_socket *consumer_find_socket(int key, | |
345 | struct consumer_output *consumer) | |
346 | { | |
347 | struct lttng_ht_iter iter; | |
348 | struct lttng_ht_node_ulong *node; | |
349 | struct consumer_socket *socket = NULL; | |
350 | ||
351 | /* Negative keys are lookup failures */ | |
a4b92340 | 352 | if (key < 0 || consumer == NULL) { |
173af62f DG |
353 | return NULL; |
354 | } | |
355 | ||
356 | lttng_ht_lookup(consumer->socks, (void *)((unsigned long) key), | |
357 | &iter); | |
358 | node = lttng_ht_iter_get_node_ulong(&iter); | |
359 | if (node != NULL) { | |
360 | socket = caa_container_of(node, struct consumer_socket, node); | |
361 | } | |
362 | ||
363 | return socket; | |
364 | } | |
365 | ||
366 | /* | |
367 | * Allocate a new consumer_socket and return the pointer. | |
368 | */ | |
4ce514c4 | 369 | struct consumer_socket *consumer_allocate_socket(int *fd) |
173af62f DG |
370 | { |
371 | struct consumer_socket *socket = NULL; | |
372 | ||
4ce514c4 DG |
373 | assert(fd); |
374 | ||
173af62f DG |
375 | socket = zmalloc(sizeof(struct consumer_socket)); |
376 | if (socket == NULL) { | |
377 | PERROR("zmalloc consumer socket"); | |
378 | goto error; | |
379 | } | |
380 | ||
9363801e | 381 | socket->fd_ptr = fd; |
4ce514c4 | 382 | lttng_ht_node_init_ulong(&socket->node, *fd); |
173af62f DG |
383 | |
384 | error: | |
385 | return socket; | |
386 | } | |
387 | ||
388 | /* | |
389 | * Add consumer socket to consumer output object. Read side lock must be | |
390 | * acquired before calling this function. | |
391 | */ | |
392 | void consumer_add_socket(struct consumer_socket *sock, | |
393 | struct consumer_output *consumer) | |
394 | { | |
395 | assert(sock); | |
396 | assert(consumer); | |
397 | ||
398 | lttng_ht_add_unique_ulong(consumer->socks, &sock->node); | |
399 | } | |
400 | ||
401 | /* | |
402 | * Delte consumer socket to consumer output object. Read side lock must be | |
403 | * acquired before calling this function. | |
404 | */ | |
405 | void consumer_del_socket(struct consumer_socket *sock, | |
406 | struct consumer_output *consumer) | |
407 | { | |
408 | int ret; | |
409 | struct lttng_ht_iter iter; | |
410 | ||
411 | assert(sock); | |
412 | assert(consumer); | |
413 | ||
414 | iter.iter.node = &sock->node.node; | |
415 | ret = lttng_ht_del(consumer->socks, &iter); | |
416 | assert(!ret); | |
417 | } | |
418 | ||
419 | /* | |
420 | * RCU destroy call function. | |
421 | */ | |
422 | static void destroy_socket_rcu(struct rcu_head *head) | |
423 | { | |
424 | struct lttng_ht_node_ulong *node = | |
425 | caa_container_of(head, struct lttng_ht_node_ulong, head); | |
426 | struct consumer_socket *socket = | |
427 | caa_container_of(node, struct consumer_socket, node); | |
428 | ||
429 | free(socket); | |
430 | } | |
431 | ||
432 | /* | |
433 | * Destroy and free socket pointer in a call RCU. Read side lock must be | |
434 | * acquired before calling this function. | |
435 | */ | |
436 | void consumer_destroy_socket(struct consumer_socket *sock) | |
437 | { | |
438 | assert(sock); | |
439 | ||
440 | /* | |
441 | * We DO NOT close the file descriptor here since it is global to the | |
2f77fc4b DG |
442 | * session daemon and is closed only if the consumer dies or a custom |
443 | * consumer was registered, | |
173af62f | 444 | */ |
2f77fc4b | 445 | if (sock->registered) { |
9363801e DG |
446 | DBG3("Consumer socket was registered. Closing fd %d", *sock->fd_ptr); |
447 | lttcomm_close_unix_sock(*sock->fd_ptr); | |
2f77fc4b | 448 | } |
173af62f DG |
449 | |
450 | call_rcu(&sock->node.head, destroy_socket_rcu); | |
451 | } | |
452 | ||
00e2e675 DG |
453 | /* |
454 | * Allocate and assign data to a consumer_output object. | |
455 | * | |
456 | * Return pointer to structure. | |
457 | */ | |
458 | struct consumer_output *consumer_create_output(enum consumer_dst_type type) | |
459 | { | |
460 | struct consumer_output *output = NULL; | |
461 | ||
462 | output = zmalloc(sizeof(struct consumer_output)); | |
463 | if (output == NULL) { | |
464 | PERROR("zmalloc consumer_output"); | |
465 | goto error; | |
466 | } | |
467 | ||
468 | /* By default, consumer output is enabled */ | |
469 | output->enabled = 1; | |
470 | output->type = type; | |
d88aee68 | 471 | output->net_seq_index = (uint64_t) -1ULL; |
173af62f DG |
472 | |
473 | output->socks = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG); | |
00e2e675 DG |
474 | |
475 | error: | |
476 | return output; | |
477 | } | |
478 | ||
af706bb7 DG |
479 | /* |
480 | * Iterate over the consumer output socket hash table and destroy them. The | |
481 | * socket file descriptor are only closed if the consumer output was | |
482 | * registered meaning it's an external consumer. | |
483 | */ | |
484 | void consumer_destroy_output_sockets(struct consumer_output *obj) | |
485 | { | |
486 | struct lttng_ht_iter iter; | |
487 | struct consumer_socket *socket; | |
488 | ||
489 | if (!obj->socks) { | |
490 | return; | |
491 | } | |
492 | ||
493 | rcu_read_lock(); | |
494 | cds_lfht_for_each_entry(obj->socks->ht, &iter.iter, socket, node.node) { | |
495 | consumer_del_socket(socket, obj); | |
496 | consumer_destroy_socket(socket); | |
497 | } | |
498 | rcu_read_unlock(); | |
499 | } | |
500 | ||
00e2e675 DG |
501 | /* |
502 | * Delete the consumer_output object from the list and free the ptr. | |
36b588ed MD |
503 | * |
504 | * Should *NOT* be called with RCU read-side lock held. | |
00e2e675 DG |
505 | */ |
506 | void consumer_destroy_output(struct consumer_output *obj) | |
507 | { | |
508 | if (obj == NULL) { | |
509 | return; | |
510 | } | |
511 | ||
af706bb7 | 512 | consumer_destroy_output_sockets(obj); |
2f77fc4b | 513 | |
af706bb7 | 514 | if (obj->socks) { |
2f77fc4b | 515 | /* Finally destroy HT */ |
0b2dc8df | 516 | ht_cleanup_push(obj->socks); |
00e2e675 | 517 | } |
173af62f | 518 | |
00e2e675 DG |
519 | free(obj); |
520 | } | |
521 | ||
522 | /* | |
523 | * Copy consumer output and returned the newly allocated copy. | |
36b588ed MD |
524 | * |
525 | * Should *NOT* be called with RCU read-side lock held. | |
00e2e675 DG |
526 | */ |
527 | struct consumer_output *consumer_copy_output(struct consumer_output *obj) | |
528 | { | |
6dc3064a | 529 | int ret; |
09a90bcd | 530 | struct lttng_ht *tmp_ht_ptr; |
00e2e675 DG |
531 | struct consumer_output *output; |
532 | ||
533 | assert(obj); | |
534 | ||
535 | output = consumer_create_output(obj->type); | |
536 | if (output == NULL) { | |
537 | goto error; | |
538 | } | |
09a90bcd DG |
539 | /* Avoid losing the HT reference after the memcpy() */ |
540 | tmp_ht_ptr = output->socks; | |
00e2e675 DG |
541 | |
542 | memcpy(output, obj, sizeof(struct consumer_output)); | |
543 | ||
09a90bcd DG |
544 | /* Putting back the HT pointer and start copying socket(s). */ |
545 | output->socks = tmp_ht_ptr; | |
173af62f | 546 | |
6dc3064a DG |
547 | ret = consumer_copy_sockets(output, obj); |
548 | if (ret < 0) { | |
549 | goto malloc_error; | |
550 | } | |
551 | ||
552 | error: | |
553 | return output; | |
554 | ||
555 | malloc_error: | |
556 | consumer_destroy_output(output); | |
557 | return NULL; | |
558 | } | |
559 | ||
560 | /* | |
561 | * Copy consumer sockets from src to dst. | |
562 | * | |
563 | * Return 0 on success or else a negative value. | |
564 | */ | |
565 | int consumer_copy_sockets(struct consumer_output *dst, | |
566 | struct consumer_output *src) | |
567 | { | |
568 | int ret = 0; | |
569 | struct lttng_ht_iter iter; | |
570 | struct consumer_socket *socket, *copy_sock; | |
571 | ||
572 | assert(dst); | |
573 | assert(src); | |
574 | ||
b82c5c4d | 575 | rcu_read_lock(); |
6dc3064a DG |
576 | cds_lfht_for_each_entry(src->socks->ht, &iter.iter, socket, node.node) { |
577 | /* Ignore socket that are already there. */ | |
9363801e | 578 | copy_sock = consumer_find_socket(*socket->fd_ptr, dst); |
6dc3064a DG |
579 | if (copy_sock) { |
580 | continue; | |
581 | } | |
582 | ||
173af62f | 583 | /* Create new socket object. */ |
9363801e | 584 | copy_sock = consumer_allocate_socket(socket->fd_ptr); |
173af62f | 585 | if (copy_sock == NULL) { |
b82c5c4d | 586 | rcu_read_unlock(); |
6dc3064a DG |
587 | ret = -ENOMEM; |
588 | goto error; | |
173af62f DG |
589 | } |
590 | ||
09a90bcd | 591 | copy_sock->registered = socket->registered; |
6dc3064a DG |
592 | /* |
593 | * This is valid because this lock is shared accross all consumer | |
594 | * object being the global lock of the consumer data structure of the | |
595 | * session daemon. | |
596 | */ | |
173af62f | 597 | copy_sock->lock = socket->lock; |
6dc3064a | 598 | consumer_add_socket(copy_sock, dst); |
173af62f | 599 | } |
b82c5c4d | 600 | rcu_read_unlock(); |
173af62f | 601 | |
00e2e675 | 602 | error: |
6dc3064a | 603 | return ret; |
00e2e675 DG |
604 | } |
605 | ||
606 | /* | |
607 | * Set network URI to the consumer output object. | |
608 | * | |
ad20f474 DG |
609 | * Return 0 on success. Return 1 if the URI were equal. Else, negative value on |
610 | * error. | |
00e2e675 DG |
611 | */ |
612 | int consumer_set_network_uri(struct consumer_output *obj, | |
613 | struct lttng_uri *uri) | |
614 | { | |
615 | int ret; | |
616 | char tmp_path[PATH_MAX]; | |
617 | char hostname[HOST_NAME_MAX]; | |
618 | struct lttng_uri *dst_uri = NULL; | |
619 | ||
620 | /* Code flow error safety net. */ | |
621 | assert(obj); | |
622 | assert(uri); | |
623 | ||
624 | switch (uri->stype) { | |
625 | case LTTNG_STREAM_CONTROL: | |
626 | dst_uri = &obj->dst.net.control; | |
627 | obj->dst.net.control_isset = 1; | |
628 | if (uri->port == 0) { | |
629 | /* Assign default port. */ | |
630 | uri->port = DEFAULT_NETWORK_CONTROL_PORT; | |
a74934ba DG |
631 | } else { |
632 | if (obj->dst.net.data_isset && uri->port == | |
633 | obj->dst.net.data.port) { | |
634 | ret = -LTTNG_ERR_INVALID; | |
635 | goto error; | |
636 | } | |
00e2e675 | 637 | } |
ad20f474 | 638 | DBG3("Consumer control URI set with port %d", uri->port); |
00e2e675 DG |
639 | break; |
640 | case LTTNG_STREAM_DATA: | |
641 | dst_uri = &obj->dst.net.data; | |
642 | obj->dst.net.data_isset = 1; | |
643 | if (uri->port == 0) { | |
644 | /* Assign default port. */ | |
645 | uri->port = DEFAULT_NETWORK_DATA_PORT; | |
a74934ba DG |
646 | } else { |
647 | if (obj->dst.net.control_isset && uri->port == | |
648 | obj->dst.net.control.port) { | |
649 | ret = -LTTNG_ERR_INVALID; | |
650 | goto error; | |
651 | } | |
00e2e675 | 652 | } |
ad20f474 | 653 | DBG3("Consumer data URI set with port %d", uri->port); |
00e2e675 DG |
654 | break; |
655 | default: | |
656 | ERR("Set network uri type unknown %d", uri->stype); | |
a74934ba | 657 | ret = -LTTNG_ERR_INVALID; |
00e2e675 DG |
658 | goto error; |
659 | } | |
660 | ||
661 | ret = uri_compare(dst_uri, uri); | |
662 | if (!ret) { | |
663 | /* Same URI, don't touch it and return success. */ | |
664 | DBG3("URI network compare are the same"); | |
ad20f474 | 665 | goto equal; |
00e2e675 DG |
666 | } |
667 | ||
668 | /* URIs were not equal, replacing it. */ | |
669 | memset(dst_uri, 0, sizeof(struct lttng_uri)); | |
670 | memcpy(dst_uri, uri, sizeof(struct lttng_uri)); | |
671 | obj->type = CONSUMER_DST_NET; | |
672 | ||
673 | /* Handle subdir and add hostname in front. */ | |
674 | if (dst_uri->stype == LTTNG_STREAM_CONTROL) { | |
675 | /* Get hostname to append it in the pathname */ | |
676 | ret = gethostname(hostname, sizeof(hostname)); | |
677 | if (ret < 0) { | |
678 | PERROR("gethostname. Fallback on default localhost"); | |
679 | strncpy(hostname, "localhost", sizeof(hostname)); | |
680 | } | |
681 | hostname[sizeof(hostname) - 1] = '\0'; | |
682 | ||
683 | /* Setup consumer subdir if none present in the control URI */ | |
684 | if (strlen(dst_uri->subdir) == 0) { | |
685 | ret = snprintf(tmp_path, sizeof(tmp_path), "%s/%s", | |
686 | hostname, obj->subdir); | |
687 | } else { | |
688 | ret = snprintf(tmp_path, sizeof(tmp_path), "%s/%s", | |
689 | hostname, dst_uri->subdir); | |
690 | } | |
691 | if (ret < 0) { | |
692 | PERROR("snprintf set consumer uri subdir"); | |
a74934ba | 693 | ret = -LTTNG_ERR_NOMEM; |
00e2e675 DG |
694 | goto error; |
695 | } | |
696 | ||
697 | strncpy(obj->subdir, tmp_path, sizeof(obj->subdir)); | |
698 | DBG3("Consumer set network uri subdir path %s", tmp_path); | |
699 | } | |
700 | ||
00e2e675 | 701 | return 0; |
ad20f474 DG |
702 | equal: |
703 | return 1; | |
00e2e675 | 704 | error: |
a74934ba | 705 | return ret; |
00e2e675 DG |
706 | } |
707 | ||
708 | /* | |
709 | * Send file descriptor to consumer via sock. | |
710 | */ | |
f50f23d9 | 711 | int consumer_send_fds(struct consumer_socket *sock, int *fds, size_t nb_fd) |
00e2e675 DG |
712 | { |
713 | int ret; | |
714 | ||
715 | assert(fds); | |
f50f23d9 | 716 | assert(sock); |
00e2e675 DG |
717 | assert(nb_fd > 0); |
718 | ||
9363801e | 719 | ret = lttcomm_send_fds_unix_sock(*sock->fd_ptr, fds, nb_fd); |
00e2e675 | 720 | if (ret < 0) { |
3448e266 | 721 | /* The above call will print a PERROR on error. */ |
9363801e | 722 | DBG("Error when sending consumer fds on sock %d", *sock->fd_ptr); |
00e2e675 DG |
723 | goto error; |
724 | } | |
725 | ||
f50f23d9 DG |
726 | ret = consumer_recv_status_reply(sock); |
727 | ||
00e2e675 DG |
728 | error: |
729 | return ret; | |
730 | } | |
731 | ||
ffe60014 DG |
732 | /* |
733 | * Consumer send communication message structure to consumer. | |
734 | */ | |
735 | int consumer_send_msg(struct consumer_socket *sock, | |
736 | struct lttcomm_consumer_msg *msg) | |
737 | { | |
738 | int ret; | |
739 | ||
740 | assert(msg); | |
741 | assert(sock); | |
ffe60014 | 742 | |
52898cb1 | 743 | ret = consumer_socket_send(sock, msg, sizeof(struct lttcomm_consumer_msg)); |
ffe60014 | 744 | if (ret < 0) { |
ffe60014 DG |
745 | goto error; |
746 | } | |
747 | ||
748 | ret = consumer_recv_status_reply(sock); | |
749 | ||
750 | error: | |
751 | return ret; | |
752 | } | |
753 | ||
00e2e675 DG |
754 | /* |
755 | * Consumer send channel communication message structure to consumer. | |
756 | */ | |
f50f23d9 DG |
757 | int consumer_send_channel(struct consumer_socket *sock, |
758 | struct lttcomm_consumer_msg *msg) | |
00e2e675 DG |
759 | { |
760 | int ret; | |
761 | ||
762 | assert(msg); | |
f50f23d9 | 763 | assert(sock); |
00e2e675 | 764 | |
52898cb1 | 765 | ret = consumer_send_msg(sock, msg); |
00e2e675 | 766 | if (ret < 0) { |
00e2e675 DG |
767 | goto error; |
768 | } | |
769 | ||
770 | error: | |
771 | return ret; | |
772 | } | |
773 | ||
ffe60014 DG |
774 | /* |
775 | * Populate the given consumer msg structure with the ask_channel command | |
776 | * information. | |
777 | */ | |
778 | void consumer_init_ask_channel_comm_msg(struct lttcomm_consumer_msg *msg, | |
779 | uint64_t subbuf_size, | |
780 | uint64_t num_subbuf, | |
781 | int overwrite, | |
782 | unsigned int switch_timer_interval, | |
783 | unsigned int read_timer_interval, | |
784 | int output, | |
785 | int type, | |
786 | uint64_t session_id, | |
787 | const char *pathname, | |
788 | const char *name, | |
789 | uid_t uid, | |
790 | gid_t gid, | |
d88aee68 DG |
791 | uint64_t relayd_id, |
792 | uint64_t key, | |
7972aab2 | 793 | unsigned char *uuid, |
1624d5b7 JD |
794 | uint32_t chan_id, |
795 | uint64_t tracefile_size, | |
2bba9e53 | 796 | uint64_t tracefile_count, |
1950109e | 797 | uint64_t session_id_per_pid, |
567eb353 DG |
798 | unsigned int monitor, |
799 | uint32_t ust_app_uid) | |
ffe60014 DG |
800 | { |
801 | assert(msg); | |
802 | ||
803 | /* Zeroed structure */ | |
804 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
805 | ||
806 | msg->cmd_type = LTTNG_CONSUMER_ASK_CHANNEL_CREATION; | |
807 | msg->u.ask_channel.subbuf_size = subbuf_size; | |
808 | msg->u.ask_channel.num_subbuf = num_subbuf ; | |
809 | msg->u.ask_channel.overwrite = overwrite; | |
810 | msg->u.ask_channel.switch_timer_interval = switch_timer_interval; | |
811 | msg->u.ask_channel.read_timer_interval = read_timer_interval; | |
812 | msg->u.ask_channel.output = output; | |
813 | msg->u.ask_channel.type = type; | |
814 | msg->u.ask_channel.session_id = session_id; | |
1950109e | 815 | msg->u.ask_channel.session_id_per_pid = session_id_per_pid; |
ffe60014 DG |
816 | msg->u.ask_channel.uid = uid; |
817 | msg->u.ask_channel.gid = gid; | |
818 | msg->u.ask_channel.relayd_id = relayd_id; | |
819 | msg->u.ask_channel.key = key; | |
7972aab2 | 820 | msg->u.ask_channel.chan_id = chan_id; |
1624d5b7 JD |
821 | msg->u.ask_channel.tracefile_size = tracefile_size; |
822 | msg->u.ask_channel.tracefile_count = tracefile_count; | |
2bba9e53 | 823 | msg->u.ask_channel.monitor = monitor; |
567eb353 | 824 | msg->u.ask_channel.ust_app_uid = ust_app_uid; |
ffe60014 DG |
825 | |
826 | memcpy(msg->u.ask_channel.uuid, uuid, sizeof(msg->u.ask_channel.uuid)); | |
827 | ||
10a50311 JD |
828 | if (pathname) { |
829 | strncpy(msg->u.ask_channel.pathname, pathname, | |
830 | sizeof(msg->u.ask_channel.pathname)); | |
831 | msg->u.ask_channel.pathname[sizeof(msg->u.ask_channel.pathname)-1] = '\0'; | |
832 | } | |
ffe60014 DG |
833 | |
834 | strncpy(msg->u.ask_channel.name, name, sizeof(msg->u.ask_channel.name)); | |
835 | msg->u.ask_channel.name[sizeof(msg->u.ask_channel.name) - 1] = '\0'; | |
836 | } | |
837 | ||
00e2e675 DG |
838 | /* |
839 | * Init channel communication message structure. | |
840 | */ | |
841 | void consumer_init_channel_comm_msg(struct lttcomm_consumer_msg *msg, | |
842 | enum lttng_consumer_command cmd, | |
d88aee68 | 843 | uint64_t channel_key, |
ffe60014 DG |
844 | uint64_t session_id, |
845 | const char *pathname, | |
846 | uid_t uid, | |
847 | gid_t gid, | |
d88aee68 | 848 | uint64_t relayd_id, |
c30aaa51 | 849 | const char *name, |
ffe60014 DG |
850 | unsigned int nb_init_streams, |
851 | enum lttng_event_output output, | |
1624d5b7 JD |
852 | int type, |
853 | uint64_t tracefile_size, | |
2bba9e53 DG |
854 | uint64_t tracefile_count, |
855 | unsigned int monitor) | |
00e2e675 DG |
856 | { |
857 | assert(msg); | |
858 | ||
00e2e675 DG |
859 | /* Zeroed structure */ |
860 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
861 | ||
862 | /* Send channel */ | |
863 | msg->cmd_type = cmd; | |
864 | msg->u.channel.channel_key = channel_key; | |
ffe60014 DG |
865 | msg->u.channel.session_id = session_id; |
866 | msg->u.channel.uid = uid; | |
867 | msg->u.channel.gid = gid; | |
868 | msg->u.channel.relayd_id = relayd_id; | |
c30aaa51 | 869 | msg->u.channel.nb_init_streams = nb_init_streams; |
ffe60014 DG |
870 | msg->u.channel.output = output; |
871 | msg->u.channel.type = type; | |
1624d5b7 JD |
872 | msg->u.channel.tracefile_size = tracefile_size; |
873 | msg->u.channel.tracefile_count = tracefile_count; | |
2bba9e53 | 874 | msg->u.channel.monitor = monitor; |
ffe60014 DG |
875 | |
876 | strncpy(msg->u.channel.pathname, pathname, | |
877 | sizeof(msg->u.channel.pathname)); | |
878 | msg->u.channel.pathname[sizeof(msg->u.channel.pathname) - 1] = '\0'; | |
879 | ||
880 | strncpy(msg->u.channel.name, name, sizeof(msg->u.channel.name)); | |
881 | msg->u.channel.name[sizeof(msg->u.channel.name) - 1] = '\0'; | |
00e2e675 DG |
882 | } |
883 | ||
884 | /* | |
885 | * Init stream communication message structure. | |
886 | */ | |
887 | void consumer_init_stream_comm_msg(struct lttcomm_consumer_msg *msg, | |
888 | enum lttng_consumer_command cmd, | |
d88aee68 DG |
889 | uint64_t channel_key, |
890 | uint64_t stream_key, | |
ffe60014 | 891 | int cpu) |
00e2e675 DG |
892 | { |
893 | assert(msg); | |
894 | ||
895 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
896 | ||
00e2e675 DG |
897 | msg->cmd_type = cmd; |
898 | msg->u.stream.channel_key = channel_key; | |
899 | msg->u.stream.stream_key = stream_key; | |
ffe60014 | 900 | msg->u.stream.cpu = cpu; |
00e2e675 DG |
901 | } |
902 | ||
903 | /* | |
904 | * Send stream communication structure to the consumer. | |
905 | */ | |
f50f23d9 DG |
906 | int consumer_send_stream(struct consumer_socket *sock, |
907 | struct consumer_output *dst, struct lttcomm_consumer_msg *msg, | |
908 | int *fds, size_t nb_fd) | |
00e2e675 DG |
909 | { |
910 | int ret; | |
911 | ||
912 | assert(msg); | |
913 | assert(dst); | |
f50f23d9 | 914 | assert(sock); |
ffe60014 | 915 | assert(fds); |
00e2e675 | 916 | |
52898cb1 | 917 | ret = consumer_send_msg(sock, msg); |
f50f23d9 DG |
918 | if (ret < 0) { |
919 | goto error; | |
920 | } | |
921 | ||
00e2e675 DG |
922 | ret = consumer_send_fds(sock, fds, nb_fd); |
923 | if (ret < 0) { | |
924 | goto error; | |
925 | } | |
926 | ||
927 | error: | |
928 | return ret; | |
929 | } | |
37278a1e DG |
930 | |
931 | /* | |
932 | * Send relayd socket to consumer associated with a session name. | |
933 | * | |
934 | * On success return positive value. On error, negative value. | |
935 | */ | |
f50f23d9 | 936 | int consumer_send_relayd_socket(struct consumer_socket *consumer_sock, |
6151a90f | 937 | struct lttcomm_relayd_sock *rsock, struct consumer_output *consumer, |
d88aee68 | 938 | enum lttng_stream_type type, uint64_t session_id) |
37278a1e DG |
939 | { |
940 | int ret; | |
941 | struct lttcomm_consumer_msg msg; | |
942 | ||
943 | /* Code flow error. Safety net. */ | |
6151a90f | 944 | assert(rsock); |
37278a1e | 945 | assert(consumer); |
f50f23d9 | 946 | assert(consumer_sock); |
37278a1e DG |
947 | |
948 | /* Bail out if consumer is disabled */ | |
949 | if (!consumer->enabled) { | |
f73fabfd | 950 | ret = LTTNG_OK; |
37278a1e DG |
951 | goto error; |
952 | } | |
953 | ||
954 | msg.cmd_type = LTTNG_CONSUMER_ADD_RELAYD_SOCKET; | |
955 | /* | |
956 | * Assign network consumer output index using the temporary consumer since | |
957 | * this call should only be made from within a set_consumer_uri() function | |
958 | * call in the session daemon. | |
959 | */ | |
960 | msg.u.relayd_sock.net_index = consumer->net_seq_index; | |
961 | msg.u.relayd_sock.type = type; | |
46e6455f | 962 | msg.u.relayd_sock.session_id = session_id; |
6151a90f | 963 | memcpy(&msg.u.relayd_sock.sock, rsock, sizeof(msg.u.relayd_sock.sock)); |
37278a1e | 964 | |
9363801e | 965 | DBG3("Sending relayd sock info to consumer on %d", *consumer_sock->fd_ptr); |
52898cb1 | 966 | ret = consumer_send_msg(consumer_sock, &msg); |
f50f23d9 DG |
967 | if (ret < 0) { |
968 | goto error; | |
969 | } | |
970 | ||
37278a1e | 971 | DBG3("Sending relayd socket file descriptor to consumer"); |
6151a90f | 972 | ret = consumer_send_fds(consumer_sock, &rsock->sock.fd, 1); |
37278a1e DG |
973 | if (ret < 0) { |
974 | goto error; | |
975 | } | |
976 | ||
977 | DBG2("Consumer relayd socket sent"); | |
978 | ||
979 | error: | |
980 | return ret; | |
981 | } | |
173af62f DG |
982 | |
983 | /* | |
2f77fc4b DG |
984 | * Set consumer subdirectory using the session name and a generated datetime if |
985 | * needed. This is appended to the current subdirectory. | |
173af62f | 986 | */ |
2f77fc4b DG |
987 | int consumer_set_subdir(struct consumer_output *consumer, |
988 | const char *session_name) | |
173af62f | 989 | { |
2f77fc4b DG |
990 | int ret = 0; |
991 | unsigned int have_default_name = 0; | |
992 | char datetime[16], tmp_path[PATH_MAX]; | |
993 | time_t rawtime; | |
994 | struct tm *timeinfo; | |
173af62f DG |
995 | |
996 | assert(consumer); | |
2f77fc4b DG |
997 | assert(session_name); |
998 | ||
999 | memset(tmp_path, 0, sizeof(tmp_path)); | |
1000 | ||
1001 | /* Flag if we have a default session. */ | |
1002 | if (strncmp(session_name, DEFAULT_SESSION_NAME "-", | |
1003 | strlen(DEFAULT_SESSION_NAME) + 1) == 0) { | |
1004 | have_default_name = 1; | |
1005 | } else { | |
1006 | /* Get date and time for session path */ | |
1007 | time(&rawtime); | |
1008 | timeinfo = localtime(&rawtime); | |
1009 | strftime(datetime, sizeof(datetime), "%Y%m%d-%H%M%S", timeinfo); | |
173af62f DG |
1010 | } |
1011 | ||
2f77fc4b DG |
1012 | if (have_default_name) { |
1013 | ret = snprintf(tmp_path, sizeof(tmp_path), | |
1014 | "%s/%s", consumer->subdir, session_name); | |
1015 | } else { | |
1016 | ret = snprintf(tmp_path, sizeof(tmp_path), | |
1017 | "%s/%s-%s/", consumer->subdir, session_name, datetime); | |
1018 | } | |
173af62f | 1019 | if (ret < 0) { |
2f77fc4b | 1020 | PERROR("snprintf session name date"); |
173af62f DG |
1021 | goto error; |
1022 | } | |
1023 | ||
2f77fc4b DG |
1024 | strncpy(consumer->subdir, tmp_path, sizeof(consumer->subdir)); |
1025 | DBG2("Consumer subdir set to %s", consumer->subdir); | |
173af62f DG |
1026 | |
1027 | error: | |
1028 | return ret; | |
1029 | } | |
806e2684 DG |
1030 | |
1031 | /* | |
6d805429 | 1032 | * Ask the consumer if the data is ready to read (NOT pending) for the specific |
806e2684 DG |
1033 | * session id. |
1034 | * | |
1035 | * This function has a different behavior with the consumer i.e. that it waits | |
6d805429 | 1036 | * for a reply from the consumer if yes or no the data is pending. |
806e2684 | 1037 | */ |
d88aee68 | 1038 | int consumer_is_data_pending(uint64_t session_id, |
806e2684 DG |
1039 | struct consumer_output *consumer) |
1040 | { | |
1041 | int ret; | |
6d805429 | 1042 | int32_t ret_code = 0; /* Default is that the data is NOT pending */ |
806e2684 DG |
1043 | struct consumer_socket *socket; |
1044 | struct lttng_ht_iter iter; | |
1045 | struct lttcomm_consumer_msg msg; | |
1046 | ||
1047 | assert(consumer); | |
1048 | ||
6d805429 | 1049 | msg.cmd_type = LTTNG_CONSUMER_DATA_PENDING; |
806e2684 | 1050 | |
d88aee68 | 1051 | msg.u.data_pending.session_id = session_id; |
806e2684 | 1052 | |
d88aee68 | 1053 | DBG3("Consumer data pending for id %" PRIu64, session_id); |
806e2684 | 1054 | |
c8f59ee5 | 1055 | /* Send command for each consumer */ |
b82c5c4d | 1056 | rcu_read_lock(); |
806e2684 DG |
1057 | cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket, |
1058 | node.node) { | |
806e2684 | 1059 | pthread_mutex_lock(socket->lock); |
52898cb1 | 1060 | ret = consumer_socket_send(socket, &msg, sizeof(msg)); |
806e2684 | 1061 | if (ret < 0) { |
806e2684 | 1062 | pthread_mutex_unlock(socket->lock); |
b82c5c4d | 1063 | goto error_unlock; |
806e2684 DG |
1064 | } |
1065 | ||
f50f23d9 DG |
1066 | /* |
1067 | * No need for a recv reply status because the answer to the command is | |
1068 | * the reply status message. | |
1069 | */ | |
1070 | ||
52898cb1 DG |
1071 | ret = consumer_socket_recv(socket, &ret_code, sizeof(ret_code)); |
1072 | if (ret < 0) { | |
806e2684 | 1073 | pthread_mutex_unlock(socket->lock); |
b82c5c4d | 1074 | goto error_unlock; |
806e2684 | 1075 | } |
806e2684 DG |
1076 | pthread_mutex_unlock(socket->lock); |
1077 | ||
6d805429 | 1078 | if (ret_code == 1) { |
806e2684 DG |
1079 | break; |
1080 | } | |
1081 | } | |
b82c5c4d | 1082 | rcu_read_unlock(); |
806e2684 | 1083 | |
d88aee68 DG |
1084 | DBG("Consumer data is %s pending for session id %" PRIu64, |
1085 | ret_code == 1 ? "" : "NOT", session_id); | |
806e2684 DG |
1086 | return ret_code; |
1087 | ||
b82c5c4d DG |
1088 | error_unlock: |
1089 | rcu_read_unlock(); | |
806e2684 DG |
1090 | return -1; |
1091 | } | |
7972aab2 DG |
1092 | |
1093 | /* | |
1094 | * Send a flush command to consumer using the given channel key. | |
1095 | * | |
1096 | * Return 0 on success else a negative value. | |
1097 | */ | |
1098 | int consumer_flush_channel(struct consumer_socket *socket, uint64_t key) | |
1099 | { | |
1100 | int ret; | |
1101 | struct lttcomm_consumer_msg msg; | |
1102 | ||
1103 | assert(socket); | |
7972aab2 DG |
1104 | |
1105 | DBG2("Consumer flush channel key %" PRIu64, key); | |
1106 | ||
1107 | msg.cmd_type = LTTNG_CONSUMER_FLUSH_CHANNEL; | |
1108 | msg.u.flush_channel.key = key; | |
1109 | ||
1110 | pthread_mutex_lock(socket->lock); | |
1111 | health_code_update(); | |
1112 | ||
1113 | ret = consumer_send_msg(socket, &msg); | |
1114 | if (ret < 0) { | |
1115 | goto end; | |
1116 | } | |
1117 | ||
1118 | end: | |
1119 | health_code_update(); | |
1120 | pthread_mutex_unlock(socket->lock); | |
1121 | return ret; | |
1122 | } | |
1123 | ||
1124 | /* | |
1125 | * Send a close metdata command to consumer using the given channel key. | |
1126 | * | |
1127 | * Return 0 on success else a negative value. | |
1128 | */ | |
1129 | int consumer_close_metadata(struct consumer_socket *socket, | |
1130 | uint64_t metadata_key) | |
1131 | { | |
1132 | int ret; | |
1133 | struct lttcomm_consumer_msg msg; | |
1134 | ||
1135 | assert(socket); | |
7972aab2 DG |
1136 | |
1137 | DBG2("Consumer close metadata channel key %" PRIu64, metadata_key); | |
1138 | ||
1139 | msg.cmd_type = LTTNG_CONSUMER_CLOSE_METADATA; | |
1140 | msg.u.close_metadata.key = metadata_key; | |
1141 | ||
1142 | pthread_mutex_lock(socket->lock); | |
1143 | health_code_update(); | |
1144 | ||
1145 | ret = consumer_send_msg(socket, &msg); | |
1146 | if (ret < 0) { | |
1147 | goto end; | |
1148 | } | |
1149 | ||
1150 | end: | |
1151 | health_code_update(); | |
1152 | pthread_mutex_unlock(socket->lock); | |
1153 | return ret; | |
1154 | } | |
1155 | ||
1156 | /* | |
1157 | * Send a setup metdata command to consumer using the given channel key. | |
1158 | * | |
1159 | * Return 0 on success else a negative value. | |
1160 | */ | |
1161 | int consumer_setup_metadata(struct consumer_socket *socket, | |
1162 | uint64_t metadata_key) | |
1163 | { | |
1164 | int ret; | |
1165 | struct lttcomm_consumer_msg msg; | |
1166 | ||
1167 | assert(socket); | |
7972aab2 DG |
1168 | |
1169 | DBG2("Consumer setup metadata channel key %" PRIu64, metadata_key); | |
1170 | ||
1171 | msg.cmd_type = LTTNG_CONSUMER_SETUP_METADATA; | |
1172 | msg.u.setup_metadata.key = metadata_key; | |
1173 | ||
1174 | pthread_mutex_lock(socket->lock); | |
1175 | health_code_update(); | |
1176 | ||
1177 | ret = consumer_send_msg(socket, &msg); | |
1178 | if (ret < 0) { | |
1179 | goto end; | |
1180 | } | |
1181 | ||
1182 | end: | |
1183 | health_code_update(); | |
1184 | pthread_mutex_unlock(socket->lock); | |
1185 | return ret; | |
1186 | } | |
1187 | ||
1188 | /* | |
331744e3 | 1189 | * Send metadata string to consumer. Socket lock MUST be acquired. |
7972aab2 DG |
1190 | * |
1191 | * Return 0 on success else a negative value. | |
1192 | */ | |
1193 | int consumer_push_metadata(struct consumer_socket *socket, | |
1194 | uint64_t metadata_key, char *metadata_str, size_t len, | |
1195 | size_t target_offset) | |
1196 | { | |
1197 | int ret; | |
1198 | struct lttcomm_consumer_msg msg; | |
1199 | ||
1200 | assert(socket); | |
7972aab2 | 1201 | |
9363801e | 1202 | DBG2("Consumer push metadata to consumer socket %d", *socket->fd_ptr); |
7972aab2 DG |
1203 | |
1204 | msg.cmd_type = LTTNG_CONSUMER_PUSH_METADATA; | |
1205 | msg.u.push_metadata.key = metadata_key; | |
1206 | msg.u.push_metadata.target_offset = target_offset; | |
1207 | msg.u.push_metadata.len = len; | |
1208 | ||
7972aab2 DG |
1209 | health_code_update(); |
1210 | ret = consumer_send_msg(socket, &msg); | |
331744e3 | 1211 | if (ret < 0 || len == 0) { |
7972aab2 DG |
1212 | goto end; |
1213 | } | |
1214 | ||
9363801e DG |
1215 | DBG3("Consumer pushing metadata on sock %d of len %zu", *socket->fd_ptr, |
1216 | len); | |
7972aab2 | 1217 | |
52898cb1 | 1218 | ret = consumer_socket_send(socket, metadata_str, len); |
7972aab2 DG |
1219 | if (ret < 0) { |
1220 | goto end; | |
1221 | } | |
1222 | ||
1223 | health_code_update(); | |
1224 | ret = consumer_recv_status_reply(socket); | |
1225 | if (ret < 0) { | |
1226 | goto end; | |
1227 | } | |
1228 | ||
1229 | end: | |
1230 | health_code_update(); | |
7972aab2 DG |
1231 | return ret; |
1232 | } | |
6dc3064a DG |
1233 | |
1234 | /* | |
1235 | * Ask the consumer to snapshot a specific channel using the key. | |
1236 | * | |
1237 | * Return 0 on success or else a negative error. | |
1238 | */ | |
1239 | int consumer_snapshot_channel(struct consumer_socket *socket, uint64_t key, | |
1240 | struct snapshot_output *output, int metadata, uid_t uid, gid_t gid, | |
5c786ded | 1241 | const char *session_path, int wait, int max_stream_size) |
6dc3064a DG |
1242 | { |
1243 | int ret; | |
1244 | struct lttcomm_consumer_msg msg; | |
1245 | ||
1246 | assert(socket); | |
6dc3064a DG |
1247 | assert(output); |
1248 | assert(output->consumer); | |
1249 | ||
1250 | DBG("Consumer snapshot channel key %" PRIu64, key); | |
1251 | ||
ee91bab2 | 1252 | memset(&msg, 0, sizeof(msg)); |
6dc3064a DG |
1253 | msg.cmd_type = LTTNG_CONSUMER_SNAPSHOT_CHANNEL; |
1254 | msg.u.snapshot_channel.key = key; | |
5c786ded | 1255 | msg.u.snapshot_channel.max_stream_size = max_stream_size; |
6dc3064a DG |
1256 | msg.u.snapshot_channel.metadata = metadata; |
1257 | ||
1258 | if (output->consumer->type == CONSUMER_DST_NET) { | |
1259 | msg.u.snapshot_channel.relayd_id = output->consumer->net_seq_index; | |
1260 | msg.u.snapshot_channel.use_relayd = 1; | |
1261 | ret = snprintf(msg.u.snapshot_channel.pathname, | |
1bfe7328 DG |
1262 | sizeof(msg.u.snapshot_channel.pathname), |
1263 | "%s/%s-%s-%" PRIu64 "%s", output->consumer->subdir, | |
1264 | output->name, output->datetime, output->nb_snapshot, | |
ee91bab2 | 1265 | session_path); |
6dc3064a DG |
1266 | if (ret < 0) { |
1267 | ret = -LTTNG_ERR_NOMEM; | |
1268 | goto error; | |
1269 | } | |
1270 | } else { | |
1271 | ret = snprintf(msg.u.snapshot_channel.pathname, | |
1bfe7328 DG |
1272 | sizeof(msg.u.snapshot_channel.pathname), |
1273 | "%s/%s-%s-%" PRIu64 "%s", output->consumer->dst.trace_path, | |
1274 | output->name, output->datetime, output->nb_snapshot, | |
1275 | session_path); | |
6dc3064a DG |
1276 | if (ret < 0) { |
1277 | ret = -LTTNG_ERR_NOMEM; | |
1278 | goto error; | |
1279 | } | |
07b86b52 | 1280 | msg.u.snapshot_channel.relayd_id = (uint64_t) -1ULL; |
6dc3064a DG |
1281 | |
1282 | /* Create directory. Ignore if exist. */ | |
1283 | ret = run_as_mkdir_recursive(msg.u.snapshot_channel.pathname, | |
1284 | S_IRWXU | S_IRWXG, uid, gid); | |
1285 | if (ret < 0) { | |
1286 | if (ret != -EEXIST) { | |
1287 | ERR("Trace directory creation error"); | |
1288 | goto error; | |
1289 | } | |
1290 | } | |
1291 | } | |
1292 | ||
1293 | health_code_update(); | |
1294 | ret = consumer_send_msg(socket, &msg); | |
1295 | if (ret < 0) { | |
1296 | goto error; | |
1297 | } | |
1298 | ||
1299 | error: | |
1300 | health_code_update(); | |
1301 | return ret; | |
1302 | } |