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> | |
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 | |
2f77fc4b DG |
210 | msg.cmd_type = LTTNG_CONSUMER_DESTROY_RELAYD; |
211 | msg.u.destroy_relayd.net_seq_idx = consumer->net_seq_index; | |
212 | ||
213 | pthread_mutex_lock(sock->lock); | |
52898cb1 | 214 | ret = consumer_socket_send(sock, &msg, sizeof(msg)); |
2f77fc4b | 215 | if (ret < 0) { |
52898cb1 | 216 | goto error; |
2f77fc4b DG |
217 | } |
218 | ||
f50f23d9 DG |
219 | /* Don't check the return value. The caller will do it. */ |
220 | ret = consumer_recv_status_reply(sock); | |
221 | ||
2f77fc4b DG |
222 | DBG2("Consumer send destroy relayd command done"); |
223 | ||
224 | error: | |
52898cb1 | 225 | pthread_mutex_unlock(sock->lock); |
2f77fc4b DG |
226 | return ret; |
227 | } | |
228 | ||
229 | /* | |
230 | * For each consumer socket in the consumer output object, send a destroy | |
231 | * relayd command. | |
232 | */ | |
233 | void consumer_output_send_destroy_relayd(struct consumer_output *consumer) | |
234 | { | |
2f77fc4b DG |
235 | struct lttng_ht_iter iter; |
236 | struct consumer_socket *socket; | |
237 | ||
238 | assert(consumer); | |
239 | ||
240 | /* Destroy any relayd connection */ | |
6dc3064a | 241 | if (consumer->type == CONSUMER_DST_NET) { |
2f77fc4b DG |
242 | rcu_read_lock(); |
243 | cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket, | |
244 | node.node) { | |
c617c0c6 MD |
245 | int ret; |
246 | ||
2f77fc4b DG |
247 | /* Send destroy relayd command */ |
248 | ret = consumer_send_destroy_relayd(socket, consumer); | |
249 | if (ret < 0) { | |
c5c45efa | 250 | DBG("Unable to send destroy relayd command to consumer"); |
2f77fc4b DG |
251 | /* Continue since we MUST delete everything at this point. */ |
252 | } | |
253 | } | |
254 | rcu_read_unlock(); | |
255 | } | |
256 | } | |
257 | ||
a4b92340 DG |
258 | /* |
259 | * From a consumer_data structure, allocate and add a consumer socket to the | |
260 | * consumer output. | |
261 | * | |
262 | * Return 0 on success, else negative value on error | |
263 | */ | |
264 | int consumer_create_socket(struct consumer_data *data, | |
265 | struct consumer_output *output) | |
266 | { | |
267 | int ret = 0; | |
268 | struct consumer_socket *socket; | |
269 | ||
270 | assert(data); | |
271 | ||
272 | if (output == NULL || data->cmd_sock < 0) { | |
273 | /* | |
274 | * Not an error. Possible there is simply not spawned consumer or it's | |
275 | * disabled for the tracing session asking the socket. | |
276 | */ | |
277 | goto error; | |
278 | } | |
279 | ||
280 | rcu_read_lock(); | |
281 | socket = consumer_find_socket(data->cmd_sock, output); | |
282 | rcu_read_unlock(); | |
283 | if (socket == NULL) { | |
4ce514c4 | 284 | socket = consumer_allocate_socket(&data->cmd_sock); |
a4b92340 DG |
285 | if (socket == NULL) { |
286 | ret = -1; | |
287 | goto error; | |
288 | } | |
289 | ||
2f77fc4b | 290 | socket->registered = 0; |
a4b92340 DG |
291 | socket->lock = &data->lock; |
292 | rcu_read_lock(); | |
293 | consumer_add_socket(socket, output); | |
294 | rcu_read_unlock(); | |
295 | } | |
296 | ||
6dc3064a DG |
297 | socket->type = data->type; |
298 | ||
a4b92340 DG |
299 | DBG3("Consumer socket created (fd: %d) and added to output", |
300 | data->cmd_sock); | |
301 | ||
302 | error: | |
303 | return ret; | |
304 | } | |
305 | ||
7972aab2 DG |
306 | /* |
307 | * Return the consumer socket from the given consumer output with the right | |
308 | * bitness. On error, returns NULL. | |
309 | * | |
310 | * The caller MUST acquire a rcu read side lock and keep it until the socket | |
311 | * object reference is not needed anymore. | |
312 | */ | |
313 | struct consumer_socket *consumer_find_socket_by_bitness(int bits, | |
314 | struct consumer_output *consumer) | |
315 | { | |
316 | int consumer_fd; | |
317 | struct consumer_socket *socket = NULL; | |
318 | ||
319 | switch (bits) { | |
320 | case 64: | |
321 | consumer_fd = uatomic_read(&ust_consumerd64_fd); | |
322 | break; | |
323 | case 32: | |
324 | consumer_fd = uatomic_read(&ust_consumerd32_fd); | |
325 | break; | |
326 | default: | |
327 | assert(0); | |
328 | goto end; | |
329 | } | |
330 | ||
331 | socket = consumer_find_socket(consumer_fd, consumer); | |
332 | if (!socket) { | |
333 | ERR("Consumer socket fd %d not found in consumer obj %p", | |
334 | consumer_fd, consumer); | |
335 | } | |
336 | ||
337 | end: | |
338 | return socket; | |
339 | } | |
340 | ||
173af62f DG |
341 | /* |
342 | * Find a consumer_socket in a consumer_output hashtable. Read side lock must | |
343 | * be acquired before calling this function and across use of the | |
344 | * returned consumer_socket. | |
345 | */ | |
346 | struct consumer_socket *consumer_find_socket(int key, | |
347 | struct consumer_output *consumer) | |
348 | { | |
349 | struct lttng_ht_iter iter; | |
350 | struct lttng_ht_node_ulong *node; | |
351 | struct consumer_socket *socket = NULL; | |
352 | ||
353 | /* Negative keys are lookup failures */ | |
a4b92340 | 354 | if (key < 0 || consumer == NULL) { |
173af62f DG |
355 | return NULL; |
356 | } | |
357 | ||
358 | lttng_ht_lookup(consumer->socks, (void *)((unsigned long) key), | |
359 | &iter); | |
360 | node = lttng_ht_iter_get_node_ulong(&iter); | |
361 | if (node != NULL) { | |
362 | socket = caa_container_of(node, struct consumer_socket, node); | |
363 | } | |
364 | ||
365 | return socket; | |
366 | } | |
367 | ||
368 | /* | |
369 | * Allocate a new consumer_socket and return the pointer. | |
370 | */ | |
4ce514c4 | 371 | struct consumer_socket *consumer_allocate_socket(int *fd) |
173af62f DG |
372 | { |
373 | struct consumer_socket *socket = NULL; | |
374 | ||
4ce514c4 DG |
375 | assert(fd); |
376 | ||
173af62f DG |
377 | socket = zmalloc(sizeof(struct consumer_socket)); |
378 | if (socket == NULL) { | |
379 | PERROR("zmalloc consumer socket"); | |
380 | goto error; | |
381 | } | |
382 | ||
9363801e | 383 | socket->fd_ptr = fd; |
4ce514c4 | 384 | lttng_ht_node_init_ulong(&socket->node, *fd); |
173af62f DG |
385 | |
386 | error: | |
387 | return socket; | |
388 | } | |
389 | ||
390 | /* | |
391 | * Add consumer socket to consumer output object. Read side lock must be | |
392 | * acquired before calling this function. | |
393 | */ | |
394 | void consumer_add_socket(struct consumer_socket *sock, | |
395 | struct consumer_output *consumer) | |
396 | { | |
397 | assert(sock); | |
398 | assert(consumer); | |
399 | ||
400 | lttng_ht_add_unique_ulong(consumer->socks, &sock->node); | |
401 | } | |
402 | ||
403 | /* | |
404 | * Delte consumer socket to consumer output object. Read side lock must be | |
405 | * acquired before calling this function. | |
406 | */ | |
407 | void consumer_del_socket(struct consumer_socket *sock, | |
408 | struct consumer_output *consumer) | |
409 | { | |
410 | int ret; | |
411 | struct lttng_ht_iter iter; | |
412 | ||
413 | assert(sock); | |
414 | assert(consumer); | |
415 | ||
416 | iter.iter.node = &sock->node.node; | |
417 | ret = lttng_ht_del(consumer->socks, &iter); | |
418 | assert(!ret); | |
419 | } | |
420 | ||
421 | /* | |
422 | * RCU destroy call function. | |
423 | */ | |
424 | static void destroy_socket_rcu(struct rcu_head *head) | |
425 | { | |
426 | struct lttng_ht_node_ulong *node = | |
427 | caa_container_of(head, struct lttng_ht_node_ulong, head); | |
428 | struct consumer_socket *socket = | |
429 | caa_container_of(node, struct consumer_socket, node); | |
430 | ||
431 | free(socket); | |
432 | } | |
433 | ||
434 | /* | |
435 | * Destroy and free socket pointer in a call RCU. Read side lock must be | |
436 | * acquired before calling this function. | |
437 | */ | |
438 | void consumer_destroy_socket(struct consumer_socket *sock) | |
439 | { | |
440 | assert(sock); | |
441 | ||
442 | /* | |
443 | * We DO NOT close the file descriptor here since it is global to the | |
2f77fc4b DG |
444 | * session daemon and is closed only if the consumer dies or a custom |
445 | * consumer was registered, | |
173af62f | 446 | */ |
2f77fc4b | 447 | if (sock->registered) { |
9363801e DG |
448 | DBG3("Consumer socket was registered. Closing fd %d", *sock->fd_ptr); |
449 | lttcomm_close_unix_sock(*sock->fd_ptr); | |
2f77fc4b | 450 | } |
173af62f DG |
451 | |
452 | call_rcu(&sock->node.head, destroy_socket_rcu); | |
453 | } | |
454 | ||
00e2e675 DG |
455 | /* |
456 | * Allocate and assign data to a consumer_output object. | |
457 | * | |
458 | * Return pointer to structure. | |
459 | */ | |
460 | struct consumer_output *consumer_create_output(enum consumer_dst_type type) | |
461 | { | |
462 | struct consumer_output *output = NULL; | |
463 | ||
464 | output = zmalloc(sizeof(struct consumer_output)); | |
465 | if (output == NULL) { | |
466 | PERROR("zmalloc consumer_output"); | |
467 | goto error; | |
468 | } | |
469 | ||
470 | /* By default, consumer output is enabled */ | |
471 | output->enabled = 1; | |
472 | output->type = type; | |
d88aee68 | 473 | output->net_seq_index = (uint64_t) -1ULL; |
173af62f DG |
474 | |
475 | output->socks = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG); | |
00e2e675 DG |
476 | |
477 | error: | |
478 | return output; | |
479 | } | |
480 | ||
af706bb7 DG |
481 | /* |
482 | * Iterate over the consumer output socket hash table and destroy them. The | |
483 | * socket file descriptor are only closed if the consumer output was | |
484 | * registered meaning it's an external consumer. | |
485 | */ | |
486 | void consumer_destroy_output_sockets(struct consumer_output *obj) | |
487 | { | |
488 | struct lttng_ht_iter iter; | |
489 | struct consumer_socket *socket; | |
490 | ||
491 | if (!obj->socks) { | |
492 | return; | |
493 | } | |
494 | ||
495 | rcu_read_lock(); | |
496 | cds_lfht_for_each_entry(obj->socks->ht, &iter.iter, socket, node.node) { | |
497 | consumer_del_socket(socket, obj); | |
498 | consumer_destroy_socket(socket); | |
499 | } | |
500 | rcu_read_unlock(); | |
501 | } | |
502 | ||
00e2e675 DG |
503 | /* |
504 | * Delete the consumer_output object from the list and free the ptr. | |
36b588ed MD |
505 | * |
506 | * Should *NOT* be called with RCU read-side lock held. | |
00e2e675 DG |
507 | */ |
508 | void consumer_destroy_output(struct consumer_output *obj) | |
509 | { | |
510 | if (obj == NULL) { | |
511 | return; | |
512 | } | |
513 | ||
af706bb7 | 514 | consumer_destroy_output_sockets(obj); |
2f77fc4b | 515 | |
af706bb7 | 516 | if (obj->socks) { |
2f77fc4b | 517 | /* Finally destroy HT */ |
0b2dc8df | 518 | ht_cleanup_push(obj->socks); |
00e2e675 | 519 | } |
173af62f | 520 | |
00e2e675 DG |
521 | free(obj); |
522 | } | |
523 | ||
524 | /* | |
525 | * Copy consumer output and returned the newly allocated copy. | |
36b588ed MD |
526 | * |
527 | * Should *NOT* be called with RCU read-side lock held. | |
00e2e675 DG |
528 | */ |
529 | struct consumer_output *consumer_copy_output(struct consumer_output *obj) | |
530 | { | |
6dc3064a | 531 | int ret; |
09a90bcd | 532 | struct lttng_ht *tmp_ht_ptr; |
00e2e675 DG |
533 | struct consumer_output *output; |
534 | ||
535 | assert(obj); | |
536 | ||
537 | output = consumer_create_output(obj->type); | |
538 | if (output == NULL) { | |
539 | goto error; | |
540 | } | |
09a90bcd DG |
541 | /* Avoid losing the HT reference after the memcpy() */ |
542 | tmp_ht_ptr = output->socks; | |
00e2e675 DG |
543 | |
544 | memcpy(output, obj, sizeof(struct consumer_output)); | |
545 | ||
09a90bcd DG |
546 | /* Putting back the HT pointer and start copying socket(s). */ |
547 | output->socks = tmp_ht_ptr; | |
173af62f | 548 | |
6dc3064a DG |
549 | ret = consumer_copy_sockets(output, obj); |
550 | if (ret < 0) { | |
551 | goto malloc_error; | |
552 | } | |
553 | ||
554 | error: | |
555 | return output; | |
556 | ||
557 | malloc_error: | |
558 | consumer_destroy_output(output); | |
559 | return NULL; | |
560 | } | |
561 | ||
562 | /* | |
563 | * Copy consumer sockets from src to dst. | |
564 | * | |
565 | * Return 0 on success or else a negative value. | |
566 | */ | |
567 | int consumer_copy_sockets(struct consumer_output *dst, | |
568 | struct consumer_output *src) | |
569 | { | |
570 | int ret = 0; | |
571 | struct lttng_ht_iter iter; | |
572 | struct consumer_socket *socket, *copy_sock; | |
573 | ||
574 | assert(dst); | |
575 | assert(src); | |
576 | ||
b82c5c4d | 577 | rcu_read_lock(); |
6dc3064a DG |
578 | cds_lfht_for_each_entry(src->socks->ht, &iter.iter, socket, node.node) { |
579 | /* Ignore socket that are already there. */ | |
9363801e | 580 | copy_sock = consumer_find_socket(*socket->fd_ptr, dst); |
6dc3064a DG |
581 | if (copy_sock) { |
582 | continue; | |
583 | } | |
584 | ||
173af62f | 585 | /* Create new socket object. */ |
9363801e | 586 | copy_sock = consumer_allocate_socket(socket->fd_ptr); |
173af62f | 587 | if (copy_sock == NULL) { |
b82c5c4d | 588 | rcu_read_unlock(); |
6dc3064a DG |
589 | ret = -ENOMEM; |
590 | goto error; | |
173af62f DG |
591 | } |
592 | ||
09a90bcd | 593 | copy_sock->registered = socket->registered; |
6dc3064a DG |
594 | /* |
595 | * This is valid because this lock is shared accross all consumer | |
596 | * object being the global lock of the consumer data structure of the | |
597 | * session daemon. | |
598 | */ | |
173af62f | 599 | copy_sock->lock = socket->lock; |
6dc3064a | 600 | consumer_add_socket(copy_sock, dst); |
173af62f | 601 | } |
b82c5c4d | 602 | rcu_read_unlock(); |
173af62f | 603 | |
00e2e675 | 604 | error: |
6dc3064a | 605 | return ret; |
00e2e675 DG |
606 | } |
607 | ||
608 | /* | |
609 | * Set network URI to the consumer output object. | |
610 | * | |
ad20f474 DG |
611 | * Return 0 on success. Return 1 if the URI were equal. Else, negative value on |
612 | * error. | |
00e2e675 DG |
613 | */ |
614 | int consumer_set_network_uri(struct consumer_output *obj, | |
615 | struct lttng_uri *uri) | |
616 | { | |
617 | int ret; | |
618 | char tmp_path[PATH_MAX]; | |
619 | char hostname[HOST_NAME_MAX]; | |
620 | struct lttng_uri *dst_uri = NULL; | |
621 | ||
622 | /* Code flow error safety net. */ | |
623 | assert(obj); | |
624 | assert(uri); | |
625 | ||
626 | switch (uri->stype) { | |
627 | case LTTNG_STREAM_CONTROL: | |
628 | dst_uri = &obj->dst.net.control; | |
629 | obj->dst.net.control_isset = 1; | |
630 | if (uri->port == 0) { | |
631 | /* Assign default port. */ | |
632 | uri->port = DEFAULT_NETWORK_CONTROL_PORT; | |
a74934ba DG |
633 | } else { |
634 | if (obj->dst.net.data_isset && uri->port == | |
635 | obj->dst.net.data.port) { | |
636 | ret = -LTTNG_ERR_INVALID; | |
637 | goto error; | |
638 | } | |
00e2e675 | 639 | } |
ad20f474 | 640 | DBG3("Consumer control URI set with port %d", uri->port); |
00e2e675 DG |
641 | break; |
642 | case LTTNG_STREAM_DATA: | |
643 | dst_uri = &obj->dst.net.data; | |
644 | obj->dst.net.data_isset = 1; | |
645 | if (uri->port == 0) { | |
646 | /* Assign default port. */ | |
647 | uri->port = DEFAULT_NETWORK_DATA_PORT; | |
a74934ba DG |
648 | } else { |
649 | if (obj->dst.net.control_isset && uri->port == | |
650 | obj->dst.net.control.port) { | |
651 | ret = -LTTNG_ERR_INVALID; | |
652 | goto error; | |
653 | } | |
00e2e675 | 654 | } |
ad20f474 | 655 | DBG3("Consumer data URI set with port %d", uri->port); |
00e2e675 DG |
656 | break; |
657 | default: | |
658 | ERR("Set network uri type unknown %d", uri->stype); | |
a74934ba | 659 | ret = -LTTNG_ERR_INVALID; |
00e2e675 DG |
660 | goto error; |
661 | } | |
662 | ||
663 | ret = uri_compare(dst_uri, uri); | |
664 | if (!ret) { | |
665 | /* Same URI, don't touch it and return success. */ | |
666 | DBG3("URI network compare are the same"); | |
ad20f474 | 667 | goto equal; |
00e2e675 DG |
668 | } |
669 | ||
670 | /* URIs were not equal, replacing it. */ | |
671 | memset(dst_uri, 0, sizeof(struct lttng_uri)); | |
672 | memcpy(dst_uri, uri, sizeof(struct lttng_uri)); | |
673 | obj->type = CONSUMER_DST_NET; | |
674 | ||
675 | /* Handle subdir and add hostname in front. */ | |
676 | if (dst_uri->stype == LTTNG_STREAM_CONTROL) { | |
677 | /* Get hostname to append it in the pathname */ | |
678 | ret = gethostname(hostname, sizeof(hostname)); | |
679 | if (ret < 0) { | |
680 | PERROR("gethostname. Fallback on default localhost"); | |
681 | strncpy(hostname, "localhost", sizeof(hostname)); | |
682 | } | |
683 | hostname[sizeof(hostname) - 1] = '\0'; | |
684 | ||
685 | /* Setup consumer subdir if none present in the control URI */ | |
686 | if (strlen(dst_uri->subdir) == 0) { | |
687 | ret = snprintf(tmp_path, sizeof(tmp_path), "%s/%s", | |
688 | hostname, obj->subdir); | |
689 | } else { | |
690 | ret = snprintf(tmp_path, sizeof(tmp_path), "%s/%s", | |
691 | hostname, dst_uri->subdir); | |
692 | } | |
693 | if (ret < 0) { | |
694 | PERROR("snprintf set consumer uri subdir"); | |
a74934ba | 695 | ret = -LTTNG_ERR_NOMEM; |
00e2e675 DG |
696 | goto error; |
697 | } | |
698 | ||
699 | strncpy(obj->subdir, tmp_path, sizeof(obj->subdir)); | |
700 | DBG3("Consumer set network uri subdir path %s", tmp_path); | |
701 | } | |
702 | ||
00e2e675 | 703 | return 0; |
ad20f474 DG |
704 | equal: |
705 | return 1; | |
00e2e675 | 706 | error: |
a74934ba | 707 | return ret; |
00e2e675 DG |
708 | } |
709 | ||
710 | /* | |
711 | * Send file descriptor to consumer via sock. | |
712 | */ | |
f50f23d9 | 713 | int consumer_send_fds(struct consumer_socket *sock, int *fds, size_t nb_fd) |
00e2e675 DG |
714 | { |
715 | int ret; | |
716 | ||
717 | assert(fds); | |
f50f23d9 | 718 | assert(sock); |
00e2e675 DG |
719 | assert(nb_fd > 0); |
720 | ||
9363801e | 721 | ret = lttcomm_send_fds_unix_sock(*sock->fd_ptr, fds, nb_fd); |
00e2e675 | 722 | if (ret < 0) { |
3448e266 | 723 | /* The above call will print a PERROR on error. */ |
9363801e | 724 | DBG("Error when sending consumer fds on sock %d", *sock->fd_ptr); |
00e2e675 DG |
725 | goto error; |
726 | } | |
727 | ||
f50f23d9 DG |
728 | ret = consumer_recv_status_reply(sock); |
729 | ||
00e2e675 DG |
730 | error: |
731 | return ret; | |
732 | } | |
733 | ||
ffe60014 DG |
734 | /* |
735 | * Consumer send communication message structure to consumer. | |
736 | */ | |
737 | int consumer_send_msg(struct consumer_socket *sock, | |
738 | struct lttcomm_consumer_msg *msg) | |
739 | { | |
740 | int ret; | |
741 | ||
742 | assert(msg); | |
743 | assert(sock); | |
ffe60014 | 744 | |
52898cb1 | 745 | ret = consumer_socket_send(sock, msg, sizeof(struct lttcomm_consumer_msg)); |
ffe60014 | 746 | if (ret < 0) { |
ffe60014 DG |
747 | goto error; |
748 | } | |
749 | ||
750 | ret = consumer_recv_status_reply(sock); | |
751 | ||
752 | error: | |
753 | return ret; | |
754 | } | |
755 | ||
00e2e675 DG |
756 | /* |
757 | * Consumer send channel communication message structure to consumer. | |
758 | */ | |
f50f23d9 DG |
759 | int consumer_send_channel(struct consumer_socket *sock, |
760 | struct lttcomm_consumer_msg *msg) | |
00e2e675 DG |
761 | { |
762 | int ret; | |
763 | ||
764 | assert(msg); | |
f50f23d9 | 765 | assert(sock); |
00e2e675 | 766 | |
52898cb1 | 767 | ret = consumer_send_msg(sock, msg); |
00e2e675 | 768 | if (ret < 0) { |
00e2e675 DG |
769 | goto error; |
770 | } | |
771 | ||
772 | error: | |
773 | return ret; | |
774 | } | |
775 | ||
ffe60014 DG |
776 | /* |
777 | * Populate the given consumer msg structure with the ask_channel command | |
778 | * information. | |
779 | */ | |
780 | void consumer_init_ask_channel_comm_msg(struct lttcomm_consumer_msg *msg, | |
781 | uint64_t subbuf_size, | |
782 | uint64_t num_subbuf, | |
783 | int overwrite, | |
784 | unsigned int switch_timer_interval, | |
785 | unsigned int read_timer_interval, | |
ecc48a90 | 786 | unsigned int live_timer_interval, |
ffe60014 DG |
787 | int output, |
788 | int type, | |
789 | uint64_t session_id, | |
790 | const char *pathname, | |
791 | const char *name, | |
792 | uid_t uid, | |
793 | gid_t gid, | |
d88aee68 DG |
794 | uint64_t relayd_id, |
795 | uint64_t key, | |
7972aab2 | 796 | unsigned char *uuid, |
1624d5b7 JD |
797 | uint32_t chan_id, |
798 | uint64_t tracefile_size, | |
2bba9e53 | 799 | uint64_t tracefile_count, |
1950109e | 800 | uint64_t session_id_per_pid, |
567eb353 DG |
801 | unsigned int monitor, |
802 | uint32_t ust_app_uid) | |
ffe60014 DG |
803 | { |
804 | assert(msg); | |
805 | ||
806 | /* Zeroed structure */ | |
807 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
808 | ||
809 | msg->cmd_type = LTTNG_CONSUMER_ASK_CHANNEL_CREATION; | |
810 | msg->u.ask_channel.subbuf_size = subbuf_size; | |
811 | msg->u.ask_channel.num_subbuf = num_subbuf ; | |
812 | msg->u.ask_channel.overwrite = overwrite; | |
813 | msg->u.ask_channel.switch_timer_interval = switch_timer_interval; | |
814 | msg->u.ask_channel.read_timer_interval = read_timer_interval; | |
ecc48a90 | 815 | msg->u.ask_channel.live_timer_interval = live_timer_interval; |
ffe60014 DG |
816 | msg->u.ask_channel.output = output; |
817 | msg->u.ask_channel.type = type; | |
818 | msg->u.ask_channel.session_id = session_id; | |
1950109e | 819 | msg->u.ask_channel.session_id_per_pid = session_id_per_pid; |
ffe60014 DG |
820 | msg->u.ask_channel.uid = uid; |
821 | msg->u.ask_channel.gid = gid; | |
822 | msg->u.ask_channel.relayd_id = relayd_id; | |
823 | msg->u.ask_channel.key = key; | |
7972aab2 | 824 | msg->u.ask_channel.chan_id = chan_id; |
1624d5b7 JD |
825 | msg->u.ask_channel.tracefile_size = tracefile_size; |
826 | msg->u.ask_channel.tracefile_count = tracefile_count; | |
2bba9e53 | 827 | msg->u.ask_channel.monitor = monitor; |
567eb353 | 828 | msg->u.ask_channel.ust_app_uid = ust_app_uid; |
ffe60014 DG |
829 | |
830 | memcpy(msg->u.ask_channel.uuid, uuid, sizeof(msg->u.ask_channel.uuid)); | |
831 | ||
10a50311 JD |
832 | if (pathname) { |
833 | strncpy(msg->u.ask_channel.pathname, pathname, | |
834 | sizeof(msg->u.ask_channel.pathname)); | |
835 | msg->u.ask_channel.pathname[sizeof(msg->u.ask_channel.pathname)-1] = '\0'; | |
836 | } | |
ffe60014 DG |
837 | |
838 | strncpy(msg->u.ask_channel.name, name, sizeof(msg->u.ask_channel.name)); | |
839 | msg->u.ask_channel.name[sizeof(msg->u.ask_channel.name) - 1] = '\0'; | |
840 | } | |
841 | ||
00e2e675 DG |
842 | /* |
843 | * Init channel communication message structure. | |
844 | */ | |
845 | void consumer_init_channel_comm_msg(struct lttcomm_consumer_msg *msg, | |
846 | enum lttng_consumer_command cmd, | |
d88aee68 | 847 | uint64_t channel_key, |
ffe60014 DG |
848 | uint64_t session_id, |
849 | const char *pathname, | |
850 | uid_t uid, | |
851 | gid_t gid, | |
d88aee68 | 852 | uint64_t relayd_id, |
c30aaa51 | 853 | const char *name, |
ffe60014 DG |
854 | unsigned int nb_init_streams, |
855 | enum lttng_event_output output, | |
1624d5b7 JD |
856 | int type, |
857 | uint64_t tracefile_size, | |
2bba9e53 | 858 | uint64_t tracefile_count, |
ecc48a90 JD |
859 | unsigned int monitor, |
860 | unsigned int live_timer_interval) | |
00e2e675 DG |
861 | { |
862 | assert(msg); | |
863 | ||
00e2e675 DG |
864 | /* Zeroed structure */ |
865 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
866 | ||
867 | /* Send channel */ | |
868 | msg->cmd_type = cmd; | |
869 | msg->u.channel.channel_key = channel_key; | |
ffe60014 DG |
870 | msg->u.channel.session_id = session_id; |
871 | msg->u.channel.uid = uid; | |
872 | msg->u.channel.gid = gid; | |
873 | msg->u.channel.relayd_id = relayd_id; | |
c30aaa51 | 874 | msg->u.channel.nb_init_streams = nb_init_streams; |
ffe60014 DG |
875 | msg->u.channel.output = output; |
876 | msg->u.channel.type = type; | |
1624d5b7 JD |
877 | msg->u.channel.tracefile_size = tracefile_size; |
878 | msg->u.channel.tracefile_count = tracefile_count; | |
2bba9e53 | 879 | msg->u.channel.monitor = monitor; |
ecc48a90 | 880 | msg->u.channel.live_timer_interval = live_timer_interval; |
ffe60014 DG |
881 | |
882 | strncpy(msg->u.channel.pathname, pathname, | |
883 | sizeof(msg->u.channel.pathname)); | |
884 | msg->u.channel.pathname[sizeof(msg->u.channel.pathname) - 1] = '\0'; | |
885 | ||
886 | strncpy(msg->u.channel.name, name, sizeof(msg->u.channel.name)); | |
887 | msg->u.channel.name[sizeof(msg->u.channel.name) - 1] = '\0'; | |
00e2e675 DG |
888 | } |
889 | ||
890 | /* | |
891 | * Init stream communication message structure. | |
892 | */ | |
893 | void consumer_init_stream_comm_msg(struct lttcomm_consumer_msg *msg, | |
894 | enum lttng_consumer_command cmd, | |
d88aee68 DG |
895 | uint64_t channel_key, |
896 | uint64_t stream_key, | |
ffe60014 | 897 | int cpu) |
00e2e675 DG |
898 | { |
899 | assert(msg); | |
900 | ||
901 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
902 | ||
00e2e675 DG |
903 | msg->cmd_type = cmd; |
904 | msg->u.stream.channel_key = channel_key; | |
905 | msg->u.stream.stream_key = stream_key; | |
ffe60014 | 906 | msg->u.stream.cpu = cpu; |
00e2e675 DG |
907 | } |
908 | ||
909 | /* | |
910 | * Send stream communication structure to the consumer. | |
911 | */ | |
f50f23d9 DG |
912 | int consumer_send_stream(struct consumer_socket *sock, |
913 | struct consumer_output *dst, struct lttcomm_consumer_msg *msg, | |
914 | int *fds, size_t nb_fd) | |
00e2e675 DG |
915 | { |
916 | int ret; | |
917 | ||
918 | assert(msg); | |
919 | assert(dst); | |
f50f23d9 | 920 | assert(sock); |
ffe60014 | 921 | assert(fds); |
00e2e675 | 922 | |
52898cb1 | 923 | ret = consumer_send_msg(sock, msg); |
f50f23d9 DG |
924 | if (ret < 0) { |
925 | goto error; | |
926 | } | |
927 | ||
00e2e675 DG |
928 | ret = consumer_send_fds(sock, fds, nb_fd); |
929 | if (ret < 0) { | |
930 | goto error; | |
931 | } | |
932 | ||
933 | error: | |
934 | return ret; | |
935 | } | |
37278a1e DG |
936 | |
937 | /* | |
938 | * Send relayd socket to consumer associated with a session name. | |
939 | * | |
940 | * On success return positive value. On error, negative value. | |
941 | */ | |
f50f23d9 | 942 | int consumer_send_relayd_socket(struct consumer_socket *consumer_sock, |
6151a90f | 943 | struct lttcomm_relayd_sock *rsock, struct consumer_output *consumer, |
d3e2ba59 JD |
944 | enum lttng_stream_type type, uint64_t session_id, |
945 | char *session_name, char *hostname, int session_live_timer) | |
37278a1e DG |
946 | { |
947 | int ret; | |
948 | struct lttcomm_consumer_msg msg; | |
949 | ||
950 | /* Code flow error. Safety net. */ | |
6151a90f | 951 | assert(rsock); |
37278a1e | 952 | assert(consumer); |
f50f23d9 | 953 | assert(consumer_sock); |
37278a1e DG |
954 | |
955 | /* Bail out if consumer is disabled */ | |
956 | if (!consumer->enabled) { | |
f73fabfd | 957 | ret = LTTNG_OK; |
37278a1e DG |
958 | goto error; |
959 | } | |
960 | ||
d3e2ba59 JD |
961 | if (type == LTTNG_STREAM_CONTROL) { |
962 | ret = relayd_create_session(rsock, | |
963 | &msg.u.relayd_sock.relayd_session_id, | |
7d2f7452 DG |
964 | session_name, hostname, session_live_timer, |
965 | consumer->snapshot); | |
d3e2ba59 JD |
966 | if (ret < 0) { |
967 | /* Close the control socket. */ | |
968 | (void) relayd_close(rsock); | |
969 | goto error; | |
970 | } | |
971 | } | |
972 | ||
37278a1e DG |
973 | msg.cmd_type = LTTNG_CONSUMER_ADD_RELAYD_SOCKET; |
974 | /* | |
975 | * Assign network consumer output index using the temporary consumer since | |
976 | * this call should only be made from within a set_consumer_uri() function | |
977 | * call in the session daemon. | |
978 | */ | |
979 | msg.u.relayd_sock.net_index = consumer->net_seq_index; | |
980 | msg.u.relayd_sock.type = type; | |
46e6455f | 981 | msg.u.relayd_sock.session_id = session_id; |
6151a90f | 982 | memcpy(&msg.u.relayd_sock.sock, rsock, sizeof(msg.u.relayd_sock.sock)); |
37278a1e | 983 | |
9363801e | 984 | DBG3("Sending relayd sock info to consumer on %d", *consumer_sock->fd_ptr); |
52898cb1 | 985 | ret = consumer_send_msg(consumer_sock, &msg); |
f50f23d9 DG |
986 | if (ret < 0) { |
987 | goto error; | |
988 | } | |
989 | ||
37278a1e | 990 | DBG3("Sending relayd socket file descriptor to consumer"); |
6151a90f | 991 | ret = consumer_send_fds(consumer_sock, &rsock->sock.fd, 1); |
37278a1e DG |
992 | if (ret < 0) { |
993 | goto error; | |
994 | } | |
995 | ||
996 | DBG2("Consumer relayd socket sent"); | |
997 | ||
998 | error: | |
999 | return ret; | |
1000 | } | |
173af62f DG |
1001 | |
1002 | /* | |
2f77fc4b DG |
1003 | * Set consumer subdirectory using the session name and a generated datetime if |
1004 | * needed. This is appended to the current subdirectory. | |
173af62f | 1005 | */ |
2f77fc4b DG |
1006 | int consumer_set_subdir(struct consumer_output *consumer, |
1007 | const char *session_name) | |
173af62f | 1008 | { |
2f77fc4b DG |
1009 | int ret = 0; |
1010 | unsigned int have_default_name = 0; | |
1011 | char datetime[16], tmp_path[PATH_MAX]; | |
1012 | time_t rawtime; | |
1013 | struct tm *timeinfo; | |
173af62f DG |
1014 | |
1015 | assert(consumer); | |
2f77fc4b DG |
1016 | assert(session_name); |
1017 | ||
1018 | memset(tmp_path, 0, sizeof(tmp_path)); | |
1019 | ||
1020 | /* Flag if we have a default session. */ | |
1021 | if (strncmp(session_name, DEFAULT_SESSION_NAME "-", | |
1022 | strlen(DEFAULT_SESSION_NAME) + 1) == 0) { | |
1023 | have_default_name = 1; | |
1024 | } else { | |
1025 | /* Get date and time for session path */ | |
1026 | time(&rawtime); | |
1027 | timeinfo = localtime(&rawtime); | |
1028 | strftime(datetime, sizeof(datetime), "%Y%m%d-%H%M%S", timeinfo); | |
173af62f DG |
1029 | } |
1030 | ||
2f77fc4b DG |
1031 | if (have_default_name) { |
1032 | ret = snprintf(tmp_path, sizeof(tmp_path), | |
1033 | "%s/%s", consumer->subdir, session_name); | |
1034 | } else { | |
1035 | ret = snprintf(tmp_path, sizeof(tmp_path), | |
1036 | "%s/%s-%s/", consumer->subdir, session_name, datetime); | |
1037 | } | |
173af62f | 1038 | if (ret < 0) { |
2f77fc4b | 1039 | PERROR("snprintf session name date"); |
173af62f DG |
1040 | goto error; |
1041 | } | |
1042 | ||
2f77fc4b DG |
1043 | strncpy(consumer->subdir, tmp_path, sizeof(consumer->subdir)); |
1044 | DBG2("Consumer subdir set to %s", consumer->subdir); | |
173af62f DG |
1045 | |
1046 | error: | |
1047 | return ret; | |
1048 | } | |
806e2684 DG |
1049 | |
1050 | /* | |
6d805429 | 1051 | * Ask the consumer if the data is ready to read (NOT pending) for the specific |
806e2684 DG |
1052 | * session id. |
1053 | * | |
1054 | * This function has a different behavior with the consumer i.e. that it waits | |
6d805429 | 1055 | * for a reply from the consumer if yes or no the data is pending. |
806e2684 | 1056 | */ |
d88aee68 | 1057 | int consumer_is_data_pending(uint64_t session_id, |
806e2684 DG |
1058 | struct consumer_output *consumer) |
1059 | { | |
1060 | int ret; | |
6d805429 | 1061 | int32_t ret_code = 0; /* Default is that the data is NOT pending */ |
806e2684 DG |
1062 | struct consumer_socket *socket; |
1063 | struct lttng_ht_iter iter; | |
1064 | struct lttcomm_consumer_msg msg; | |
1065 | ||
1066 | assert(consumer); | |
1067 | ||
6d805429 | 1068 | msg.cmd_type = LTTNG_CONSUMER_DATA_PENDING; |
806e2684 | 1069 | |
d88aee68 | 1070 | msg.u.data_pending.session_id = session_id; |
806e2684 | 1071 | |
d88aee68 | 1072 | DBG3("Consumer data pending for id %" PRIu64, session_id); |
806e2684 | 1073 | |
c8f59ee5 | 1074 | /* Send command for each consumer */ |
b82c5c4d | 1075 | rcu_read_lock(); |
806e2684 DG |
1076 | cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket, |
1077 | node.node) { | |
806e2684 | 1078 | pthread_mutex_lock(socket->lock); |
52898cb1 | 1079 | ret = consumer_socket_send(socket, &msg, sizeof(msg)); |
806e2684 | 1080 | if (ret < 0) { |
806e2684 | 1081 | pthread_mutex_unlock(socket->lock); |
b82c5c4d | 1082 | goto error_unlock; |
806e2684 DG |
1083 | } |
1084 | ||
f50f23d9 DG |
1085 | /* |
1086 | * No need for a recv reply status because the answer to the command is | |
1087 | * the reply status message. | |
1088 | */ | |
1089 | ||
52898cb1 DG |
1090 | ret = consumer_socket_recv(socket, &ret_code, sizeof(ret_code)); |
1091 | if (ret < 0) { | |
806e2684 | 1092 | pthread_mutex_unlock(socket->lock); |
b82c5c4d | 1093 | goto error_unlock; |
806e2684 | 1094 | } |
806e2684 DG |
1095 | pthread_mutex_unlock(socket->lock); |
1096 | ||
6d805429 | 1097 | if (ret_code == 1) { |
806e2684 DG |
1098 | break; |
1099 | } | |
1100 | } | |
b82c5c4d | 1101 | rcu_read_unlock(); |
806e2684 | 1102 | |
d88aee68 DG |
1103 | DBG("Consumer data is %s pending for session id %" PRIu64, |
1104 | ret_code == 1 ? "" : "NOT", session_id); | |
806e2684 DG |
1105 | return ret_code; |
1106 | ||
b82c5c4d DG |
1107 | error_unlock: |
1108 | rcu_read_unlock(); | |
806e2684 DG |
1109 | return -1; |
1110 | } | |
7972aab2 DG |
1111 | |
1112 | /* | |
1113 | * Send a flush command to consumer using the given channel key. | |
1114 | * | |
1115 | * Return 0 on success else a negative value. | |
1116 | */ | |
1117 | int consumer_flush_channel(struct consumer_socket *socket, uint64_t key) | |
1118 | { | |
1119 | int ret; | |
1120 | struct lttcomm_consumer_msg msg; | |
1121 | ||
1122 | assert(socket); | |
7972aab2 DG |
1123 | |
1124 | DBG2("Consumer flush channel key %" PRIu64, key); | |
1125 | ||
1126 | msg.cmd_type = LTTNG_CONSUMER_FLUSH_CHANNEL; | |
1127 | msg.u.flush_channel.key = key; | |
1128 | ||
1129 | pthread_mutex_lock(socket->lock); | |
1130 | health_code_update(); | |
1131 | ||
1132 | ret = consumer_send_msg(socket, &msg); | |
1133 | if (ret < 0) { | |
1134 | goto end; | |
1135 | } | |
1136 | ||
1137 | end: | |
1138 | health_code_update(); | |
1139 | pthread_mutex_unlock(socket->lock); | |
1140 | return ret; | |
1141 | } | |
1142 | ||
1143 | /* | |
1144 | * Send a close metdata command to consumer using the given channel key. | |
1145 | * | |
1146 | * Return 0 on success else a negative value. | |
1147 | */ | |
1148 | int consumer_close_metadata(struct consumer_socket *socket, | |
1149 | uint64_t metadata_key) | |
1150 | { | |
1151 | int ret; | |
1152 | struct lttcomm_consumer_msg msg; | |
1153 | ||
1154 | assert(socket); | |
7972aab2 DG |
1155 | |
1156 | DBG2("Consumer close metadata channel key %" PRIu64, metadata_key); | |
1157 | ||
1158 | msg.cmd_type = LTTNG_CONSUMER_CLOSE_METADATA; | |
1159 | msg.u.close_metadata.key = metadata_key; | |
1160 | ||
1161 | pthread_mutex_lock(socket->lock); | |
1162 | health_code_update(); | |
1163 | ||
1164 | ret = consumer_send_msg(socket, &msg); | |
1165 | if (ret < 0) { | |
1166 | goto end; | |
1167 | } | |
1168 | ||
1169 | end: | |
1170 | health_code_update(); | |
1171 | pthread_mutex_unlock(socket->lock); | |
1172 | return ret; | |
1173 | } | |
1174 | ||
1175 | /* | |
1176 | * Send a setup metdata command to consumer using the given channel key. | |
1177 | * | |
1178 | * Return 0 on success else a negative value. | |
1179 | */ | |
1180 | int consumer_setup_metadata(struct consumer_socket *socket, | |
1181 | uint64_t metadata_key) | |
1182 | { | |
1183 | int ret; | |
1184 | struct lttcomm_consumer_msg msg; | |
1185 | ||
1186 | assert(socket); | |
7972aab2 DG |
1187 | |
1188 | DBG2("Consumer setup metadata channel key %" PRIu64, metadata_key); | |
1189 | ||
1190 | msg.cmd_type = LTTNG_CONSUMER_SETUP_METADATA; | |
1191 | msg.u.setup_metadata.key = metadata_key; | |
1192 | ||
1193 | pthread_mutex_lock(socket->lock); | |
1194 | health_code_update(); | |
1195 | ||
1196 | ret = consumer_send_msg(socket, &msg); | |
1197 | if (ret < 0) { | |
1198 | goto end; | |
1199 | } | |
1200 | ||
1201 | end: | |
1202 | health_code_update(); | |
1203 | pthread_mutex_unlock(socket->lock); | |
1204 | return ret; | |
1205 | } | |
1206 | ||
1207 | /* | |
331744e3 | 1208 | * Send metadata string to consumer. Socket lock MUST be acquired. |
7972aab2 DG |
1209 | * |
1210 | * Return 0 on success else a negative value. | |
1211 | */ | |
1212 | int consumer_push_metadata(struct consumer_socket *socket, | |
1213 | uint64_t metadata_key, char *metadata_str, size_t len, | |
1214 | size_t target_offset) | |
1215 | { | |
1216 | int ret; | |
1217 | struct lttcomm_consumer_msg msg; | |
1218 | ||
1219 | assert(socket); | |
7972aab2 | 1220 | |
9363801e | 1221 | DBG2("Consumer push metadata to consumer socket %d", *socket->fd_ptr); |
7972aab2 DG |
1222 | |
1223 | msg.cmd_type = LTTNG_CONSUMER_PUSH_METADATA; | |
1224 | msg.u.push_metadata.key = metadata_key; | |
1225 | msg.u.push_metadata.target_offset = target_offset; | |
1226 | msg.u.push_metadata.len = len; | |
1227 | ||
7972aab2 DG |
1228 | health_code_update(); |
1229 | ret = consumer_send_msg(socket, &msg); | |
331744e3 | 1230 | if (ret < 0 || len == 0) { |
7972aab2 DG |
1231 | goto end; |
1232 | } | |
1233 | ||
9363801e DG |
1234 | DBG3("Consumer pushing metadata on sock %d of len %zu", *socket->fd_ptr, |
1235 | len); | |
7972aab2 | 1236 | |
52898cb1 | 1237 | ret = consumer_socket_send(socket, metadata_str, len); |
7972aab2 DG |
1238 | if (ret < 0) { |
1239 | goto end; | |
1240 | } | |
1241 | ||
1242 | health_code_update(); | |
1243 | ret = consumer_recv_status_reply(socket); | |
1244 | if (ret < 0) { | |
1245 | goto end; | |
1246 | } | |
1247 | ||
1248 | end: | |
1249 | health_code_update(); | |
7972aab2 DG |
1250 | return ret; |
1251 | } | |
6dc3064a DG |
1252 | |
1253 | /* | |
1254 | * Ask the consumer to snapshot a specific channel using the key. | |
1255 | * | |
1256 | * Return 0 on success or else a negative error. | |
1257 | */ | |
1258 | int consumer_snapshot_channel(struct consumer_socket *socket, uint64_t key, | |
1259 | struct snapshot_output *output, int metadata, uid_t uid, gid_t gid, | |
5c786ded | 1260 | const char *session_path, int wait, int max_stream_size) |
6dc3064a DG |
1261 | { |
1262 | int ret; | |
1263 | struct lttcomm_consumer_msg msg; | |
1264 | ||
1265 | assert(socket); | |
6dc3064a DG |
1266 | assert(output); |
1267 | assert(output->consumer); | |
1268 | ||
1269 | DBG("Consumer snapshot channel key %" PRIu64, key); | |
1270 | ||
ee91bab2 | 1271 | memset(&msg, 0, sizeof(msg)); |
6dc3064a DG |
1272 | msg.cmd_type = LTTNG_CONSUMER_SNAPSHOT_CHANNEL; |
1273 | msg.u.snapshot_channel.key = key; | |
5c786ded | 1274 | msg.u.snapshot_channel.max_stream_size = max_stream_size; |
6dc3064a DG |
1275 | msg.u.snapshot_channel.metadata = metadata; |
1276 | ||
1277 | if (output->consumer->type == CONSUMER_DST_NET) { | |
1278 | msg.u.snapshot_channel.relayd_id = output->consumer->net_seq_index; | |
1279 | msg.u.snapshot_channel.use_relayd = 1; | |
1280 | ret = snprintf(msg.u.snapshot_channel.pathname, | |
1bfe7328 DG |
1281 | sizeof(msg.u.snapshot_channel.pathname), |
1282 | "%s/%s-%s-%" PRIu64 "%s", output->consumer->subdir, | |
1283 | output->name, output->datetime, output->nb_snapshot, | |
ee91bab2 | 1284 | session_path); |
6dc3064a DG |
1285 | if (ret < 0) { |
1286 | ret = -LTTNG_ERR_NOMEM; | |
1287 | goto error; | |
1288 | } | |
1289 | } else { | |
1290 | ret = snprintf(msg.u.snapshot_channel.pathname, | |
1bfe7328 DG |
1291 | sizeof(msg.u.snapshot_channel.pathname), |
1292 | "%s/%s-%s-%" PRIu64 "%s", output->consumer->dst.trace_path, | |
1293 | output->name, output->datetime, output->nb_snapshot, | |
1294 | session_path); | |
6dc3064a DG |
1295 | if (ret < 0) { |
1296 | ret = -LTTNG_ERR_NOMEM; | |
1297 | goto error; | |
1298 | } | |
07b86b52 | 1299 | msg.u.snapshot_channel.relayd_id = (uint64_t) -1ULL; |
6dc3064a DG |
1300 | |
1301 | /* Create directory. Ignore if exist. */ | |
1302 | ret = run_as_mkdir_recursive(msg.u.snapshot_channel.pathname, | |
1303 | S_IRWXU | S_IRWXG, uid, gid); | |
1304 | if (ret < 0) { | |
1305 | if (ret != -EEXIST) { | |
1306 | ERR("Trace directory creation error"); | |
1307 | goto error; | |
1308 | } | |
1309 | } | |
1310 | } | |
1311 | ||
1312 | health_code_update(); | |
1313 | ret = consumer_send_msg(socket, &msg); | |
1314 | if (ret < 0) { | |
1315 | goto error; | |
1316 | } | |
1317 | ||
1318 | error: | |
1319 | health_code_update(); | |
1320 | return ret; | |
1321 | } |