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 | |
f50f23d9 DG |
37 | /* |
38 | * Receive a reply command status message from the consumer. Consumer socket | |
39 | * lock MUST be acquired before calling this function. | |
40 | * | |
41 | * Return 0 on success, -1 on recv error or a negative lttng error code which | |
42 | * was possibly returned by the consumer. | |
43 | */ | |
44 | int consumer_recv_status_reply(struct consumer_socket *sock) | |
45 | { | |
46 | int ret; | |
47 | struct lttcomm_consumer_status_msg reply; | |
48 | ||
49 | assert(sock); | |
50 | ||
4ce514c4 | 51 | ret = lttcomm_recv_unix_sock(*sock->fd, &reply, sizeof(reply)); |
a6cd2b97 DG |
52 | if (ret <= 0) { |
53 | if (ret == 0) { | |
54 | /* Orderly shutdown. Don't return 0 which means success. */ | |
55 | ret = -1; | |
56 | } | |
3448e266 | 57 | /* The above call will print a PERROR on error. */ |
4ce514c4 | 58 | DBG("Fail to receive status reply on sock %d", *sock->fd); |
f50f23d9 DG |
59 | goto end; |
60 | } | |
61 | ||
62 | if (reply.ret_code == LTTNG_OK) { | |
63 | /* All good. */ | |
64 | ret = 0; | |
65 | } else { | |
66 | ret = -reply.ret_code; | |
ffe60014 | 67 | DBG("Consumer ret code %d", ret); |
f50f23d9 DG |
68 | } |
69 | ||
70 | end: | |
71 | return ret; | |
72 | } | |
73 | ||
ffe60014 DG |
74 | /* |
75 | * Once the ASK_CHANNEL command is sent to the consumer, the channel | |
76 | * information are sent back. This call receives that data and populates key | |
77 | * and stream_count. | |
78 | * | |
79 | * On success return 0 and both key and stream_count are set. On error, a | |
80 | * negative value is sent back and both parameters are untouched. | |
81 | */ | |
82 | int consumer_recv_status_channel(struct consumer_socket *sock, | |
d88aee68 | 83 | uint64_t *key, unsigned int *stream_count) |
ffe60014 DG |
84 | { |
85 | int ret; | |
86 | struct lttcomm_consumer_status_channel reply; | |
87 | ||
88 | assert(sock); | |
89 | assert(stream_count); | |
90 | assert(key); | |
91 | ||
4ce514c4 | 92 | ret = lttcomm_recv_unix_sock(*sock->fd, &reply, sizeof(reply)); |
ffe60014 DG |
93 | if (ret <= 0) { |
94 | if (ret == 0) { | |
95 | /* Orderly shutdown. Don't return 0 which means success. */ | |
96 | ret = -1; | |
97 | } | |
98 | /* The above call will print a PERROR on error. */ | |
4ce514c4 | 99 | DBG("Fail to receive status reply on sock %d", *sock->fd); |
ffe60014 DG |
100 | goto end; |
101 | } | |
102 | ||
103 | /* An error is possible so don't touch the key and stream_count. */ | |
104 | if (reply.ret_code != LTTNG_OK) { | |
105 | ret = -1; | |
106 | goto end; | |
107 | } | |
108 | ||
109 | *key = reply.key; | |
110 | *stream_count = reply.stream_count; | |
111 | ||
112 | end: | |
113 | return ret; | |
114 | } | |
115 | ||
2f77fc4b DG |
116 | /* |
117 | * Send destroy relayd command to consumer. | |
118 | * | |
119 | * On success return positive value. On error, negative value. | |
120 | */ | |
121 | int consumer_send_destroy_relayd(struct consumer_socket *sock, | |
122 | struct consumer_output *consumer) | |
123 | { | |
124 | int ret; | |
125 | struct lttcomm_consumer_msg msg; | |
126 | ||
127 | assert(consumer); | |
128 | assert(sock); | |
129 | ||
4ce514c4 | 130 | DBG2("Sending destroy relayd command to consumer sock %d", *sock->fd); |
2f77fc4b DG |
131 | |
132 | /* Bail out if consumer is disabled */ | |
133 | if (!consumer->enabled) { | |
f73fabfd | 134 | ret = LTTNG_OK; |
2f77fc4b DG |
135 | DBG3("Consumer is disabled"); |
136 | goto error; | |
137 | } | |
138 | ||
139 | msg.cmd_type = LTTNG_CONSUMER_DESTROY_RELAYD; | |
140 | msg.u.destroy_relayd.net_seq_idx = consumer->net_seq_index; | |
141 | ||
142 | pthread_mutex_lock(sock->lock); | |
4ce514c4 | 143 | ret = lttcomm_send_unix_sock(*sock->fd, &msg, sizeof(msg)); |
2f77fc4b | 144 | if (ret < 0) { |
c5c45efa DG |
145 | /* Indicate that the consumer is probably closing at this point. */ |
146 | DBG("send consumer destroy relayd command"); | |
f50f23d9 | 147 | goto error_send; |
2f77fc4b DG |
148 | } |
149 | ||
f50f23d9 DG |
150 | /* Don't check the return value. The caller will do it. */ |
151 | ret = consumer_recv_status_reply(sock); | |
152 | ||
2f77fc4b DG |
153 | DBG2("Consumer send destroy relayd command done"); |
154 | ||
f50f23d9 DG |
155 | error_send: |
156 | pthread_mutex_unlock(sock->lock); | |
2f77fc4b DG |
157 | error: |
158 | return ret; | |
159 | } | |
160 | ||
161 | /* | |
162 | * For each consumer socket in the consumer output object, send a destroy | |
163 | * relayd command. | |
164 | */ | |
165 | void consumer_output_send_destroy_relayd(struct consumer_output *consumer) | |
166 | { | |
2f77fc4b DG |
167 | struct lttng_ht_iter iter; |
168 | struct consumer_socket *socket; | |
169 | ||
170 | assert(consumer); | |
171 | ||
172 | /* Destroy any relayd connection */ | |
6dc3064a | 173 | if (consumer->type == CONSUMER_DST_NET) { |
2f77fc4b DG |
174 | rcu_read_lock(); |
175 | cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket, | |
176 | node.node) { | |
c617c0c6 MD |
177 | int ret; |
178 | ||
2f77fc4b DG |
179 | /* Send destroy relayd command */ |
180 | ret = consumer_send_destroy_relayd(socket, consumer); | |
181 | if (ret < 0) { | |
c5c45efa | 182 | DBG("Unable to send destroy relayd command to consumer"); |
2f77fc4b DG |
183 | /* Continue since we MUST delete everything at this point. */ |
184 | } | |
185 | } | |
186 | rcu_read_unlock(); | |
187 | } | |
188 | } | |
189 | ||
a4b92340 DG |
190 | /* |
191 | * From a consumer_data structure, allocate and add a consumer socket to the | |
192 | * consumer output. | |
193 | * | |
194 | * Return 0 on success, else negative value on error | |
195 | */ | |
196 | int consumer_create_socket(struct consumer_data *data, | |
197 | struct consumer_output *output) | |
198 | { | |
199 | int ret = 0; | |
200 | struct consumer_socket *socket; | |
201 | ||
202 | assert(data); | |
203 | ||
204 | if (output == NULL || data->cmd_sock < 0) { | |
205 | /* | |
206 | * Not an error. Possible there is simply not spawned consumer or it's | |
207 | * disabled for the tracing session asking the socket. | |
208 | */ | |
209 | goto error; | |
210 | } | |
211 | ||
212 | rcu_read_lock(); | |
213 | socket = consumer_find_socket(data->cmd_sock, output); | |
214 | rcu_read_unlock(); | |
215 | if (socket == NULL) { | |
4ce514c4 | 216 | socket = consumer_allocate_socket(&data->cmd_sock); |
a4b92340 DG |
217 | if (socket == NULL) { |
218 | ret = -1; | |
219 | goto error; | |
220 | } | |
221 | ||
2f77fc4b | 222 | socket->registered = 0; |
a4b92340 DG |
223 | socket->lock = &data->lock; |
224 | rcu_read_lock(); | |
225 | consumer_add_socket(socket, output); | |
226 | rcu_read_unlock(); | |
227 | } | |
228 | ||
6dc3064a DG |
229 | socket->type = data->type; |
230 | ||
a4b92340 DG |
231 | DBG3("Consumer socket created (fd: %d) and added to output", |
232 | data->cmd_sock); | |
233 | ||
234 | error: | |
235 | return ret; | |
236 | } | |
237 | ||
7972aab2 DG |
238 | /* |
239 | * Return the consumer socket from the given consumer output with the right | |
240 | * bitness. On error, returns NULL. | |
241 | * | |
242 | * The caller MUST acquire a rcu read side lock and keep it until the socket | |
243 | * object reference is not needed anymore. | |
244 | */ | |
245 | struct consumer_socket *consumer_find_socket_by_bitness(int bits, | |
246 | struct consumer_output *consumer) | |
247 | { | |
248 | int consumer_fd; | |
249 | struct consumer_socket *socket = NULL; | |
250 | ||
251 | switch (bits) { | |
252 | case 64: | |
253 | consumer_fd = uatomic_read(&ust_consumerd64_fd); | |
254 | break; | |
255 | case 32: | |
256 | consumer_fd = uatomic_read(&ust_consumerd32_fd); | |
257 | break; | |
258 | default: | |
259 | assert(0); | |
260 | goto end; | |
261 | } | |
262 | ||
263 | socket = consumer_find_socket(consumer_fd, consumer); | |
264 | if (!socket) { | |
265 | ERR("Consumer socket fd %d not found in consumer obj %p", | |
266 | consumer_fd, consumer); | |
267 | } | |
268 | ||
269 | end: | |
270 | return socket; | |
271 | } | |
272 | ||
173af62f DG |
273 | /* |
274 | * Find a consumer_socket in a consumer_output hashtable. Read side lock must | |
275 | * be acquired before calling this function and across use of the | |
276 | * returned consumer_socket. | |
277 | */ | |
278 | struct consumer_socket *consumer_find_socket(int key, | |
279 | struct consumer_output *consumer) | |
280 | { | |
281 | struct lttng_ht_iter iter; | |
282 | struct lttng_ht_node_ulong *node; | |
283 | struct consumer_socket *socket = NULL; | |
284 | ||
285 | /* Negative keys are lookup failures */ | |
a4b92340 | 286 | if (key < 0 || consumer == NULL) { |
173af62f DG |
287 | return NULL; |
288 | } | |
289 | ||
290 | lttng_ht_lookup(consumer->socks, (void *)((unsigned long) key), | |
291 | &iter); | |
292 | node = lttng_ht_iter_get_node_ulong(&iter); | |
293 | if (node != NULL) { | |
294 | socket = caa_container_of(node, struct consumer_socket, node); | |
295 | } | |
296 | ||
297 | return socket; | |
298 | } | |
299 | ||
300 | /* | |
301 | * Allocate a new consumer_socket and return the pointer. | |
302 | */ | |
4ce514c4 | 303 | struct consumer_socket *consumer_allocate_socket(int *fd) |
173af62f DG |
304 | { |
305 | struct consumer_socket *socket = NULL; | |
306 | ||
4ce514c4 DG |
307 | assert(fd); |
308 | ||
173af62f DG |
309 | socket = zmalloc(sizeof(struct consumer_socket)); |
310 | if (socket == NULL) { | |
311 | PERROR("zmalloc consumer socket"); | |
312 | goto error; | |
313 | } | |
314 | ||
315 | socket->fd = fd; | |
4ce514c4 | 316 | lttng_ht_node_init_ulong(&socket->node, *fd); |
173af62f DG |
317 | |
318 | error: | |
319 | return socket; | |
320 | } | |
321 | ||
322 | /* | |
323 | * Add consumer socket to consumer output object. Read side lock must be | |
324 | * acquired before calling this function. | |
325 | */ | |
326 | void consumer_add_socket(struct consumer_socket *sock, | |
327 | struct consumer_output *consumer) | |
328 | { | |
329 | assert(sock); | |
330 | assert(consumer); | |
331 | ||
332 | lttng_ht_add_unique_ulong(consumer->socks, &sock->node); | |
333 | } | |
334 | ||
335 | /* | |
336 | * Delte consumer socket to consumer output object. Read side lock must be | |
337 | * acquired before calling this function. | |
338 | */ | |
339 | void consumer_del_socket(struct consumer_socket *sock, | |
340 | struct consumer_output *consumer) | |
341 | { | |
342 | int ret; | |
343 | struct lttng_ht_iter iter; | |
344 | ||
345 | assert(sock); | |
346 | assert(consumer); | |
347 | ||
348 | iter.iter.node = &sock->node.node; | |
349 | ret = lttng_ht_del(consumer->socks, &iter); | |
350 | assert(!ret); | |
351 | } | |
352 | ||
353 | /* | |
354 | * RCU destroy call function. | |
355 | */ | |
356 | static void destroy_socket_rcu(struct rcu_head *head) | |
357 | { | |
358 | struct lttng_ht_node_ulong *node = | |
359 | caa_container_of(head, struct lttng_ht_node_ulong, head); | |
360 | struct consumer_socket *socket = | |
361 | caa_container_of(node, struct consumer_socket, node); | |
362 | ||
363 | free(socket); | |
364 | } | |
365 | ||
366 | /* | |
367 | * Destroy and free socket pointer in a call RCU. Read side lock must be | |
368 | * acquired before calling this function. | |
369 | */ | |
370 | void consumer_destroy_socket(struct consumer_socket *sock) | |
371 | { | |
372 | assert(sock); | |
373 | ||
374 | /* | |
375 | * We DO NOT close the file descriptor here since it is global to the | |
2f77fc4b DG |
376 | * session daemon and is closed only if the consumer dies or a custom |
377 | * consumer was registered, | |
173af62f | 378 | */ |
2f77fc4b | 379 | if (sock->registered) { |
4ce514c4 DG |
380 | DBG3("Consumer socket was registered. Closing fd %d", *sock->fd); |
381 | lttcomm_close_unix_sock(*sock->fd); | |
2f77fc4b | 382 | } |
173af62f DG |
383 | |
384 | call_rcu(&sock->node.head, destroy_socket_rcu); | |
385 | } | |
386 | ||
00e2e675 DG |
387 | /* |
388 | * Allocate and assign data to a consumer_output object. | |
389 | * | |
390 | * Return pointer to structure. | |
391 | */ | |
392 | struct consumer_output *consumer_create_output(enum consumer_dst_type type) | |
393 | { | |
394 | struct consumer_output *output = NULL; | |
395 | ||
396 | output = zmalloc(sizeof(struct consumer_output)); | |
397 | if (output == NULL) { | |
398 | PERROR("zmalloc consumer_output"); | |
399 | goto error; | |
400 | } | |
401 | ||
402 | /* By default, consumer output is enabled */ | |
403 | output->enabled = 1; | |
404 | output->type = type; | |
d88aee68 | 405 | output->net_seq_index = (uint64_t) -1ULL; |
173af62f DG |
406 | |
407 | output->socks = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG); | |
00e2e675 DG |
408 | |
409 | error: | |
410 | return output; | |
411 | } | |
412 | ||
af706bb7 DG |
413 | /* |
414 | * Iterate over the consumer output socket hash table and destroy them. The | |
415 | * socket file descriptor are only closed if the consumer output was | |
416 | * registered meaning it's an external consumer. | |
417 | */ | |
418 | void consumer_destroy_output_sockets(struct consumer_output *obj) | |
419 | { | |
420 | struct lttng_ht_iter iter; | |
421 | struct consumer_socket *socket; | |
422 | ||
423 | if (!obj->socks) { | |
424 | return; | |
425 | } | |
426 | ||
427 | rcu_read_lock(); | |
428 | cds_lfht_for_each_entry(obj->socks->ht, &iter.iter, socket, node.node) { | |
429 | consumer_del_socket(socket, obj); | |
430 | consumer_destroy_socket(socket); | |
431 | } | |
432 | rcu_read_unlock(); | |
433 | } | |
434 | ||
00e2e675 DG |
435 | /* |
436 | * Delete the consumer_output object from the list and free the ptr. | |
36b588ed MD |
437 | * |
438 | * Should *NOT* be called with RCU read-side lock held. | |
00e2e675 DG |
439 | */ |
440 | void consumer_destroy_output(struct consumer_output *obj) | |
441 | { | |
442 | if (obj == NULL) { | |
443 | return; | |
444 | } | |
445 | ||
af706bb7 | 446 | consumer_destroy_output_sockets(obj); |
2f77fc4b | 447 | |
af706bb7 | 448 | if (obj->socks) { |
2f77fc4b | 449 | /* Finally destroy HT */ |
0b2dc8df | 450 | ht_cleanup_push(obj->socks); |
00e2e675 | 451 | } |
173af62f | 452 | |
00e2e675 DG |
453 | free(obj); |
454 | } | |
455 | ||
456 | /* | |
457 | * Copy consumer output and returned the newly allocated copy. | |
36b588ed MD |
458 | * |
459 | * Should *NOT* be called with RCU read-side lock held. | |
00e2e675 DG |
460 | */ |
461 | struct consumer_output *consumer_copy_output(struct consumer_output *obj) | |
462 | { | |
6dc3064a | 463 | int ret; |
09a90bcd | 464 | struct lttng_ht *tmp_ht_ptr; |
00e2e675 DG |
465 | struct consumer_output *output; |
466 | ||
467 | assert(obj); | |
468 | ||
469 | output = consumer_create_output(obj->type); | |
470 | if (output == NULL) { | |
471 | goto error; | |
472 | } | |
09a90bcd DG |
473 | /* Avoid losing the HT reference after the memcpy() */ |
474 | tmp_ht_ptr = output->socks; | |
00e2e675 DG |
475 | |
476 | memcpy(output, obj, sizeof(struct consumer_output)); | |
477 | ||
09a90bcd DG |
478 | /* Putting back the HT pointer and start copying socket(s). */ |
479 | output->socks = tmp_ht_ptr; | |
173af62f | 480 | |
6dc3064a DG |
481 | ret = consumer_copy_sockets(output, obj); |
482 | if (ret < 0) { | |
483 | goto malloc_error; | |
484 | } | |
485 | ||
486 | error: | |
487 | return output; | |
488 | ||
489 | malloc_error: | |
490 | consumer_destroy_output(output); | |
491 | return NULL; | |
492 | } | |
493 | ||
494 | /* | |
495 | * Copy consumer sockets from src to dst. | |
496 | * | |
497 | * Return 0 on success or else a negative value. | |
498 | */ | |
499 | int consumer_copy_sockets(struct consumer_output *dst, | |
500 | struct consumer_output *src) | |
501 | { | |
502 | int ret = 0; | |
503 | struct lttng_ht_iter iter; | |
504 | struct consumer_socket *socket, *copy_sock; | |
505 | ||
506 | assert(dst); | |
507 | assert(src); | |
508 | ||
b82c5c4d | 509 | rcu_read_lock(); |
6dc3064a DG |
510 | cds_lfht_for_each_entry(src->socks->ht, &iter.iter, socket, node.node) { |
511 | /* Ignore socket that are already there. */ | |
4ce514c4 | 512 | copy_sock = consumer_find_socket(*socket->fd, dst); |
6dc3064a DG |
513 | if (copy_sock) { |
514 | continue; | |
515 | } | |
516 | ||
173af62f DG |
517 | /* Create new socket object. */ |
518 | copy_sock = consumer_allocate_socket(socket->fd); | |
519 | if (copy_sock == NULL) { | |
b82c5c4d | 520 | rcu_read_unlock(); |
6dc3064a DG |
521 | ret = -ENOMEM; |
522 | goto error; | |
173af62f DG |
523 | } |
524 | ||
09a90bcd | 525 | copy_sock->registered = socket->registered; |
6dc3064a DG |
526 | /* |
527 | * This is valid because this lock is shared accross all consumer | |
528 | * object being the global lock of the consumer data structure of the | |
529 | * session daemon. | |
530 | */ | |
173af62f | 531 | copy_sock->lock = socket->lock; |
6dc3064a | 532 | consumer_add_socket(copy_sock, dst); |
173af62f | 533 | } |
b82c5c4d | 534 | rcu_read_unlock(); |
173af62f | 535 | |
00e2e675 | 536 | error: |
6dc3064a | 537 | return ret; |
00e2e675 DG |
538 | } |
539 | ||
540 | /* | |
541 | * Set network URI to the consumer output object. | |
542 | * | |
ad20f474 DG |
543 | * Return 0 on success. Return 1 if the URI were equal. Else, negative value on |
544 | * error. | |
00e2e675 DG |
545 | */ |
546 | int consumer_set_network_uri(struct consumer_output *obj, | |
547 | struct lttng_uri *uri) | |
548 | { | |
549 | int ret; | |
550 | char tmp_path[PATH_MAX]; | |
551 | char hostname[HOST_NAME_MAX]; | |
552 | struct lttng_uri *dst_uri = NULL; | |
553 | ||
554 | /* Code flow error safety net. */ | |
555 | assert(obj); | |
556 | assert(uri); | |
557 | ||
558 | switch (uri->stype) { | |
559 | case LTTNG_STREAM_CONTROL: | |
560 | dst_uri = &obj->dst.net.control; | |
561 | obj->dst.net.control_isset = 1; | |
562 | if (uri->port == 0) { | |
563 | /* Assign default port. */ | |
564 | uri->port = DEFAULT_NETWORK_CONTROL_PORT; | |
a74934ba DG |
565 | } else { |
566 | if (obj->dst.net.data_isset && uri->port == | |
567 | obj->dst.net.data.port) { | |
568 | ret = -LTTNG_ERR_INVALID; | |
569 | goto error; | |
570 | } | |
00e2e675 | 571 | } |
ad20f474 | 572 | DBG3("Consumer control URI set with port %d", uri->port); |
00e2e675 DG |
573 | break; |
574 | case LTTNG_STREAM_DATA: | |
575 | dst_uri = &obj->dst.net.data; | |
576 | obj->dst.net.data_isset = 1; | |
577 | if (uri->port == 0) { | |
578 | /* Assign default port. */ | |
579 | uri->port = DEFAULT_NETWORK_DATA_PORT; | |
a74934ba DG |
580 | } else { |
581 | if (obj->dst.net.control_isset && uri->port == | |
582 | obj->dst.net.control.port) { | |
583 | ret = -LTTNG_ERR_INVALID; | |
584 | goto error; | |
585 | } | |
00e2e675 | 586 | } |
ad20f474 | 587 | DBG3("Consumer data URI set with port %d", uri->port); |
00e2e675 DG |
588 | break; |
589 | default: | |
590 | ERR("Set network uri type unknown %d", uri->stype); | |
a74934ba | 591 | ret = -LTTNG_ERR_INVALID; |
00e2e675 DG |
592 | goto error; |
593 | } | |
594 | ||
595 | ret = uri_compare(dst_uri, uri); | |
596 | if (!ret) { | |
597 | /* Same URI, don't touch it and return success. */ | |
598 | DBG3("URI network compare are the same"); | |
ad20f474 | 599 | goto equal; |
00e2e675 DG |
600 | } |
601 | ||
602 | /* URIs were not equal, replacing it. */ | |
603 | memset(dst_uri, 0, sizeof(struct lttng_uri)); | |
604 | memcpy(dst_uri, uri, sizeof(struct lttng_uri)); | |
605 | obj->type = CONSUMER_DST_NET; | |
606 | ||
607 | /* Handle subdir and add hostname in front. */ | |
608 | if (dst_uri->stype == LTTNG_STREAM_CONTROL) { | |
609 | /* Get hostname to append it in the pathname */ | |
610 | ret = gethostname(hostname, sizeof(hostname)); | |
611 | if (ret < 0) { | |
612 | PERROR("gethostname. Fallback on default localhost"); | |
613 | strncpy(hostname, "localhost", sizeof(hostname)); | |
614 | } | |
615 | hostname[sizeof(hostname) - 1] = '\0'; | |
616 | ||
617 | /* Setup consumer subdir if none present in the control URI */ | |
618 | if (strlen(dst_uri->subdir) == 0) { | |
619 | ret = snprintf(tmp_path, sizeof(tmp_path), "%s/%s", | |
620 | hostname, obj->subdir); | |
621 | } else { | |
622 | ret = snprintf(tmp_path, sizeof(tmp_path), "%s/%s", | |
623 | hostname, dst_uri->subdir); | |
624 | } | |
625 | if (ret < 0) { | |
626 | PERROR("snprintf set consumer uri subdir"); | |
a74934ba | 627 | ret = -LTTNG_ERR_NOMEM; |
00e2e675 DG |
628 | goto error; |
629 | } | |
630 | ||
631 | strncpy(obj->subdir, tmp_path, sizeof(obj->subdir)); | |
632 | DBG3("Consumer set network uri subdir path %s", tmp_path); | |
633 | } | |
634 | ||
00e2e675 | 635 | return 0; |
ad20f474 DG |
636 | equal: |
637 | return 1; | |
00e2e675 | 638 | error: |
a74934ba | 639 | return ret; |
00e2e675 DG |
640 | } |
641 | ||
642 | /* | |
643 | * Send file descriptor to consumer via sock. | |
644 | */ | |
f50f23d9 | 645 | int consumer_send_fds(struct consumer_socket *sock, int *fds, size_t nb_fd) |
00e2e675 DG |
646 | { |
647 | int ret; | |
648 | ||
649 | assert(fds); | |
f50f23d9 | 650 | assert(sock); |
4ce514c4 | 651 | assert(sock->fd); |
00e2e675 DG |
652 | assert(nb_fd > 0); |
653 | ||
4ce514c4 | 654 | ret = lttcomm_send_fds_unix_sock(*sock->fd, fds, nb_fd); |
00e2e675 | 655 | if (ret < 0) { |
3448e266 | 656 | /* The above call will print a PERROR on error. */ |
4ce514c4 | 657 | DBG("Error when sending consumer fds on sock %d", *sock->fd); |
00e2e675 DG |
658 | goto error; |
659 | } | |
660 | ||
f50f23d9 DG |
661 | ret = consumer_recv_status_reply(sock); |
662 | ||
00e2e675 DG |
663 | error: |
664 | return ret; | |
665 | } | |
666 | ||
ffe60014 DG |
667 | /* |
668 | * Consumer send communication message structure to consumer. | |
669 | */ | |
670 | int consumer_send_msg(struct consumer_socket *sock, | |
671 | struct lttcomm_consumer_msg *msg) | |
672 | { | |
673 | int ret; | |
674 | ||
675 | assert(msg); | |
676 | assert(sock); | |
4ce514c4 | 677 | assert(sock->fd); |
ffe60014 | 678 | |
4ce514c4 | 679 | ret = lttcomm_send_unix_sock(*sock->fd, msg, |
ffe60014 DG |
680 | sizeof(struct lttcomm_consumer_msg)); |
681 | if (ret < 0) { | |
682 | /* The above call will print a PERROR on error. */ | |
4ce514c4 | 683 | DBG("Error when sending consumer channel on sock %d", *sock->fd); |
ffe60014 DG |
684 | goto error; |
685 | } | |
686 | ||
687 | ret = consumer_recv_status_reply(sock); | |
688 | ||
689 | error: | |
690 | return ret; | |
691 | } | |
692 | ||
00e2e675 DG |
693 | /* |
694 | * Consumer send channel communication message structure to consumer. | |
695 | */ | |
f50f23d9 DG |
696 | int consumer_send_channel(struct consumer_socket *sock, |
697 | struct lttcomm_consumer_msg *msg) | |
00e2e675 DG |
698 | { |
699 | int ret; | |
700 | ||
701 | assert(msg); | |
f50f23d9 | 702 | assert(sock); |
4ce514c4 | 703 | assert(sock->fd); |
00e2e675 | 704 | |
4ce514c4 | 705 | ret = lttcomm_send_unix_sock(*sock->fd, msg, |
00e2e675 DG |
706 | sizeof(struct lttcomm_consumer_msg)); |
707 | if (ret < 0) { | |
3448e266 | 708 | /* The above call will print a PERROR on error. */ |
4ce514c4 | 709 | DBG("Error when sending consumer channel on sock %d", *sock->fd); |
00e2e675 DG |
710 | goto error; |
711 | } | |
712 | ||
f50f23d9 DG |
713 | ret = consumer_recv_status_reply(sock); |
714 | ||
00e2e675 DG |
715 | error: |
716 | return ret; | |
717 | } | |
718 | ||
ffe60014 DG |
719 | /* |
720 | * Populate the given consumer msg structure with the ask_channel command | |
721 | * information. | |
722 | */ | |
723 | void consumer_init_ask_channel_comm_msg(struct lttcomm_consumer_msg *msg, | |
724 | uint64_t subbuf_size, | |
725 | uint64_t num_subbuf, | |
726 | int overwrite, | |
727 | unsigned int switch_timer_interval, | |
728 | unsigned int read_timer_interval, | |
729 | int output, | |
730 | int type, | |
731 | uint64_t session_id, | |
732 | const char *pathname, | |
733 | const char *name, | |
734 | uid_t uid, | |
735 | gid_t gid, | |
d88aee68 DG |
736 | uint64_t relayd_id, |
737 | uint64_t key, | |
7972aab2 | 738 | unsigned char *uuid, |
1624d5b7 JD |
739 | uint32_t chan_id, |
740 | uint64_t tracefile_size, | |
2bba9e53 | 741 | uint64_t tracefile_count, |
1950109e | 742 | uint64_t session_id_per_pid, |
567eb353 DG |
743 | unsigned int monitor, |
744 | uint32_t ust_app_uid) | |
ffe60014 DG |
745 | { |
746 | assert(msg); | |
747 | ||
748 | /* Zeroed structure */ | |
749 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
750 | ||
751 | msg->cmd_type = LTTNG_CONSUMER_ASK_CHANNEL_CREATION; | |
752 | msg->u.ask_channel.subbuf_size = subbuf_size; | |
753 | msg->u.ask_channel.num_subbuf = num_subbuf ; | |
754 | msg->u.ask_channel.overwrite = overwrite; | |
755 | msg->u.ask_channel.switch_timer_interval = switch_timer_interval; | |
756 | msg->u.ask_channel.read_timer_interval = read_timer_interval; | |
757 | msg->u.ask_channel.output = output; | |
758 | msg->u.ask_channel.type = type; | |
759 | msg->u.ask_channel.session_id = session_id; | |
1950109e | 760 | msg->u.ask_channel.session_id_per_pid = session_id_per_pid; |
ffe60014 DG |
761 | msg->u.ask_channel.uid = uid; |
762 | msg->u.ask_channel.gid = gid; | |
763 | msg->u.ask_channel.relayd_id = relayd_id; | |
764 | msg->u.ask_channel.key = key; | |
7972aab2 | 765 | msg->u.ask_channel.chan_id = chan_id; |
1624d5b7 JD |
766 | msg->u.ask_channel.tracefile_size = tracefile_size; |
767 | msg->u.ask_channel.tracefile_count = tracefile_count; | |
2bba9e53 | 768 | msg->u.ask_channel.monitor = monitor; |
567eb353 | 769 | msg->u.ask_channel.ust_app_uid = ust_app_uid; |
ffe60014 DG |
770 | |
771 | memcpy(msg->u.ask_channel.uuid, uuid, sizeof(msg->u.ask_channel.uuid)); | |
772 | ||
10a50311 JD |
773 | if (pathname) { |
774 | strncpy(msg->u.ask_channel.pathname, pathname, | |
775 | sizeof(msg->u.ask_channel.pathname)); | |
776 | msg->u.ask_channel.pathname[sizeof(msg->u.ask_channel.pathname)-1] = '\0'; | |
777 | } | |
ffe60014 DG |
778 | |
779 | strncpy(msg->u.ask_channel.name, name, sizeof(msg->u.ask_channel.name)); | |
780 | msg->u.ask_channel.name[sizeof(msg->u.ask_channel.name) - 1] = '\0'; | |
781 | } | |
782 | ||
00e2e675 DG |
783 | /* |
784 | * Init channel communication message structure. | |
785 | */ | |
786 | void consumer_init_channel_comm_msg(struct lttcomm_consumer_msg *msg, | |
787 | enum lttng_consumer_command cmd, | |
d88aee68 | 788 | uint64_t channel_key, |
ffe60014 DG |
789 | uint64_t session_id, |
790 | const char *pathname, | |
791 | uid_t uid, | |
792 | gid_t gid, | |
d88aee68 | 793 | uint64_t relayd_id, |
c30aaa51 | 794 | const char *name, |
ffe60014 DG |
795 | unsigned int nb_init_streams, |
796 | enum lttng_event_output output, | |
1624d5b7 JD |
797 | int type, |
798 | uint64_t tracefile_size, | |
2bba9e53 DG |
799 | uint64_t tracefile_count, |
800 | unsigned int monitor) | |
00e2e675 DG |
801 | { |
802 | assert(msg); | |
803 | ||
00e2e675 DG |
804 | /* Zeroed structure */ |
805 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
806 | ||
807 | /* Send channel */ | |
808 | msg->cmd_type = cmd; | |
809 | msg->u.channel.channel_key = channel_key; | |
ffe60014 DG |
810 | msg->u.channel.session_id = session_id; |
811 | msg->u.channel.uid = uid; | |
812 | msg->u.channel.gid = gid; | |
813 | msg->u.channel.relayd_id = relayd_id; | |
c30aaa51 | 814 | msg->u.channel.nb_init_streams = nb_init_streams; |
ffe60014 DG |
815 | msg->u.channel.output = output; |
816 | msg->u.channel.type = type; | |
1624d5b7 JD |
817 | msg->u.channel.tracefile_size = tracefile_size; |
818 | msg->u.channel.tracefile_count = tracefile_count; | |
2bba9e53 | 819 | msg->u.channel.monitor = monitor; |
ffe60014 DG |
820 | |
821 | strncpy(msg->u.channel.pathname, pathname, | |
822 | sizeof(msg->u.channel.pathname)); | |
823 | msg->u.channel.pathname[sizeof(msg->u.channel.pathname) - 1] = '\0'; | |
824 | ||
825 | strncpy(msg->u.channel.name, name, sizeof(msg->u.channel.name)); | |
826 | msg->u.channel.name[sizeof(msg->u.channel.name) - 1] = '\0'; | |
00e2e675 DG |
827 | } |
828 | ||
829 | /* | |
830 | * Init stream communication message structure. | |
831 | */ | |
832 | void consumer_init_stream_comm_msg(struct lttcomm_consumer_msg *msg, | |
833 | enum lttng_consumer_command cmd, | |
d88aee68 DG |
834 | uint64_t channel_key, |
835 | uint64_t stream_key, | |
ffe60014 | 836 | int cpu) |
00e2e675 DG |
837 | { |
838 | assert(msg); | |
839 | ||
840 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
841 | ||
00e2e675 DG |
842 | msg->cmd_type = cmd; |
843 | msg->u.stream.channel_key = channel_key; | |
844 | msg->u.stream.stream_key = stream_key; | |
ffe60014 | 845 | msg->u.stream.cpu = cpu; |
00e2e675 DG |
846 | } |
847 | ||
848 | /* | |
849 | * Send stream communication structure to the consumer. | |
850 | */ | |
f50f23d9 DG |
851 | int consumer_send_stream(struct consumer_socket *sock, |
852 | struct consumer_output *dst, struct lttcomm_consumer_msg *msg, | |
853 | int *fds, size_t nb_fd) | |
00e2e675 DG |
854 | { |
855 | int ret; | |
856 | ||
857 | assert(msg); | |
858 | assert(dst); | |
f50f23d9 | 859 | assert(sock); |
4ce514c4 | 860 | assert(sock->fd); |
ffe60014 | 861 | assert(fds); |
00e2e675 DG |
862 | |
863 | /* Send on socket */ | |
4ce514c4 | 864 | ret = lttcomm_send_unix_sock(*sock->fd, msg, |
00e2e675 DG |
865 | sizeof(struct lttcomm_consumer_msg)); |
866 | if (ret < 0) { | |
3448e266 | 867 | /* The above call will print a PERROR on error. */ |
4ce514c4 | 868 | DBG("Error when sending consumer stream on sock %d", *sock->fd); |
00e2e675 DG |
869 | goto error; |
870 | } | |
871 | ||
f50f23d9 DG |
872 | ret = consumer_recv_status_reply(sock); |
873 | if (ret < 0) { | |
874 | goto error; | |
875 | } | |
876 | ||
00e2e675 DG |
877 | ret = consumer_send_fds(sock, fds, nb_fd); |
878 | if (ret < 0) { | |
879 | goto error; | |
880 | } | |
881 | ||
882 | error: | |
883 | return ret; | |
884 | } | |
37278a1e DG |
885 | |
886 | /* | |
887 | * Send relayd socket to consumer associated with a session name. | |
888 | * | |
889 | * On success return positive value. On error, negative value. | |
890 | */ | |
f50f23d9 | 891 | int consumer_send_relayd_socket(struct consumer_socket *consumer_sock, |
6151a90f | 892 | struct lttcomm_relayd_sock *rsock, struct consumer_output *consumer, |
d88aee68 | 893 | enum lttng_stream_type type, uint64_t session_id) |
37278a1e DG |
894 | { |
895 | int ret; | |
896 | struct lttcomm_consumer_msg msg; | |
897 | ||
898 | /* Code flow error. Safety net. */ | |
6151a90f | 899 | assert(rsock); |
37278a1e | 900 | assert(consumer); |
f50f23d9 | 901 | assert(consumer_sock); |
4ce514c4 | 902 | assert(consumer_sock->fd); |
37278a1e DG |
903 | |
904 | /* Bail out if consumer is disabled */ | |
905 | if (!consumer->enabled) { | |
f73fabfd | 906 | ret = LTTNG_OK; |
37278a1e DG |
907 | goto error; |
908 | } | |
909 | ||
910 | msg.cmd_type = LTTNG_CONSUMER_ADD_RELAYD_SOCKET; | |
911 | /* | |
912 | * Assign network consumer output index using the temporary consumer since | |
913 | * this call should only be made from within a set_consumer_uri() function | |
914 | * call in the session daemon. | |
915 | */ | |
916 | msg.u.relayd_sock.net_index = consumer->net_seq_index; | |
917 | msg.u.relayd_sock.type = type; | |
46e6455f | 918 | msg.u.relayd_sock.session_id = session_id; |
6151a90f | 919 | memcpy(&msg.u.relayd_sock.sock, rsock, sizeof(msg.u.relayd_sock.sock)); |
37278a1e | 920 | |
4ce514c4 DG |
921 | DBG3("Sending relayd sock info to consumer on %d", *consumer_sock->fd); |
922 | ret = lttcomm_send_unix_sock(*consumer_sock->fd, &msg, sizeof(msg)); | |
37278a1e | 923 | if (ret < 0) { |
3448e266 | 924 | /* The above call will print a PERROR on error. */ |
6151a90f | 925 | DBG("Error when sending relayd sockets on sock %d", rsock->sock.fd); |
37278a1e DG |
926 | goto error; |
927 | } | |
928 | ||
f50f23d9 DG |
929 | ret = consumer_recv_status_reply(consumer_sock); |
930 | if (ret < 0) { | |
931 | goto error; | |
932 | } | |
933 | ||
37278a1e | 934 | DBG3("Sending relayd socket file descriptor to consumer"); |
6151a90f | 935 | ret = consumer_send_fds(consumer_sock, &rsock->sock.fd, 1); |
37278a1e DG |
936 | if (ret < 0) { |
937 | goto error; | |
938 | } | |
939 | ||
940 | DBG2("Consumer relayd socket sent"); | |
941 | ||
942 | error: | |
943 | return ret; | |
944 | } | |
173af62f DG |
945 | |
946 | /* | |
2f77fc4b DG |
947 | * Set consumer subdirectory using the session name and a generated datetime if |
948 | * needed. This is appended to the current subdirectory. | |
173af62f | 949 | */ |
2f77fc4b DG |
950 | int consumer_set_subdir(struct consumer_output *consumer, |
951 | const char *session_name) | |
173af62f | 952 | { |
2f77fc4b DG |
953 | int ret = 0; |
954 | unsigned int have_default_name = 0; | |
955 | char datetime[16], tmp_path[PATH_MAX]; | |
956 | time_t rawtime; | |
957 | struct tm *timeinfo; | |
173af62f DG |
958 | |
959 | assert(consumer); | |
2f77fc4b DG |
960 | assert(session_name); |
961 | ||
962 | memset(tmp_path, 0, sizeof(tmp_path)); | |
963 | ||
964 | /* Flag if we have a default session. */ | |
965 | if (strncmp(session_name, DEFAULT_SESSION_NAME "-", | |
966 | strlen(DEFAULT_SESSION_NAME) + 1) == 0) { | |
967 | have_default_name = 1; | |
968 | } else { | |
969 | /* Get date and time for session path */ | |
970 | time(&rawtime); | |
971 | timeinfo = localtime(&rawtime); | |
972 | strftime(datetime, sizeof(datetime), "%Y%m%d-%H%M%S", timeinfo); | |
173af62f DG |
973 | } |
974 | ||
2f77fc4b DG |
975 | if (have_default_name) { |
976 | ret = snprintf(tmp_path, sizeof(tmp_path), | |
977 | "%s/%s", consumer->subdir, session_name); | |
978 | } else { | |
979 | ret = snprintf(tmp_path, sizeof(tmp_path), | |
980 | "%s/%s-%s/", consumer->subdir, session_name, datetime); | |
981 | } | |
173af62f | 982 | if (ret < 0) { |
2f77fc4b | 983 | PERROR("snprintf session name date"); |
173af62f DG |
984 | goto error; |
985 | } | |
986 | ||
2f77fc4b DG |
987 | strncpy(consumer->subdir, tmp_path, sizeof(consumer->subdir)); |
988 | DBG2("Consumer subdir set to %s", consumer->subdir); | |
173af62f DG |
989 | |
990 | error: | |
991 | return ret; | |
992 | } | |
806e2684 DG |
993 | |
994 | /* | |
6d805429 | 995 | * Ask the consumer if the data is ready to read (NOT pending) for the specific |
806e2684 DG |
996 | * session id. |
997 | * | |
998 | * This function has a different behavior with the consumer i.e. that it waits | |
6d805429 | 999 | * for a reply from the consumer if yes or no the data is pending. |
806e2684 | 1000 | */ |
d88aee68 | 1001 | int consumer_is_data_pending(uint64_t session_id, |
806e2684 DG |
1002 | struct consumer_output *consumer) |
1003 | { | |
1004 | int ret; | |
6d805429 | 1005 | int32_t ret_code = 0; /* Default is that the data is NOT pending */ |
806e2684 DG |
1006 | struct consumer_socket *socket; |
1007 | struct lttng_ht_iter iter; | |
1008 | struct lttcomm_consumer_msg msg; | |
1009 | ||
1010 | assert(consumer); | |
1011 | ||
6d805429 | 1012 | msg.cmd_type = LTTNG_CONSUMER_DATA_PENDING; |
806e2684 | 1013 | |
d88aee68 | 1014 | msg.u.data_pending.session_id = session_id; |
806e2684 | 1015 | |
d88aee68 | 1016 | DBG3("Consumer data pending for id %" PRIu64, session_id); |
806e2684 | 1017 | |
c8f59ee5 | 1018 | /* Send command for each consumer */ |
b82c5c4d | 1019 | rcu_read_lock(); |
806e2684 DG |
1020 | cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket, |
1021 | node.node) { | |
1022 | /* Code flow error */ | |
4ce514c4 | 1023 | assert(socket->fd); |
806e2684 DG |
1024 | |
1025 | pthread_mutex_lock(socket->lock); | |
1026 | ||
4ce514c4 | 1027 | ret = lttcomm_send_unix_sock(*socket->fd, &msg, sizeof(msg)); |
806e2684 | 1028 | if (ret < 0) { |
3448e266 | 1029 | /* The above call will print a PERROR on error. */ |
4ce514c4 | 1030 | DBG("Error on consumer is data pending on sock %d", *socket->fd); |
806e2684 | 1031 | pthread_mutex_unlock(socket->lock); |
b82c5c4d | 1032 | goto error_unlock; |
806e2684 DG |
1033 | } |
1034 | ||
f50f23d9 DG |
1035 | /* |
1036 | * No need for a recv reply status because the answer to the command is | |
1037 | * the reply status message. | |
1038 | */ | |
1039 | ||
4ce514c4 | 1040 | ret = lttcomm_recv_unix_sock(*socket->fd, &ret_code, sizeof(ret_code)); |
a6cd2b97 DG |
1041 | if (ret <= 0) { |
1042 | if (ret == 0) { | |
1043 | /* Orderly shutdown. Don't return 0 which means success. */ | |
1044 | ret = -1; | |
1045 | } | |
3448e266 | 1046 | /* The above call will print a PERROR on error. */ |
4ce514c4 | 1047 | DBG("Error on recv consumer is data pending on sock %d", *socket->fd); |
806e2684 | 1048 | pthread_mutex_unlock(socket->lock); |
b82c5c4d | 1049 | goto error_unlock; |
806e2684 DG |
1050 | } |
1051 | ||
1052 | pthread_mutex_unlock(socket->lock); | |
1053 | ||
6d805429 | 1054 | if (ret_code == 1) { |
806e2684 DG |
1055 | break; |
1056 | } | |
1057 | } | |
b82c5c4d | 1058 | rcu_read_unlock(); |
806e2684 | 1059 | |
d88aee68 DG |
1060 | DBG("Consumer data is %s pending for session id %" PRIu64, |
1061 | ret_code == 1 ? "" : "NOT", session_id); | |
806e2684 DG |
1062 | return ret_code; |
1063 | ||
b82c5c4d DG |
1064 | error_unlock: |
1065 | rcu_read_unlock(); | |
806e2684 DG |
1066 | return -1; |
1067 | } | |
7972aab2 DG |
1068 | |
1069 | /* | |
1070 | * Send a flush command to consumer using the given channel key. | |
1071 | * | |
1072 | * Return 0 on success else a negative value. | |
1073 | */ | |
1074 | int consumer_flush_channel(struct consumer_socket *socket, uint64_t key) | |
1075 | { | |
1076 | int ret; | |
1077 | struct lttcomm_consumer_msg msg; | |
1078 | ||
1079 | assert(socket); | |
4ce514c4 | 1080 | assert(socket->fd); |
7972aab2 DG |
1081 | |
1082 | DBG2("Consumer flush channel key %" PRIu64, key); | |
1083 | ||
1084 | msg.cmd_type = LTTNG_CONSUMER_FLUSH_CHANNEL; | |
1085 | msg.u.flush_channel.key = key; | |
1086 | ||
1087 | pthread_mutex_lock(socket->lock); | |
1088 | health_code_update(); | |
1089 | ||
1090 | ret = consumer_send_msg(socket, &msg); | |
1091 | if (ret < 0) { | |
1092 | goto end; | |
1093 | } | |
1094 | ||
1095 | end: | |
1096 | health_code_update(); | |
1097 | pthread_mutex_unlock(socket->lock); | |
1098 | return ret; | |
1099 | } | |
1100 | ||
1101 | /* | |
1102 | * Send a close metdata command to consumer using the given channel key. | |
1103 | * | |
1104 | * Return 0 on success else a negative value. | |
1105 | */ | |
1106 | int consumer_close_metadata(struct consumer_socket *socket, | |
1107 | uint64_t metadata_key) | |
1108 | { | |
1109 | int ret; | |
1110 | struct lttcomm_consumer_msg msg; | |
1111 | ||
1112 | assert(socket); | |
4ce514c4 | 1113 | assert(socket->fd); |
7972aab2 DG |
1114 | |
1115 | DBG2("Consumer close metadata channel key %" PRIu64, metadata_key); | |
1116 | ||
1117 | msg.cmd_type = LTTNG_CONSUMER_CLOSE_METADATA; | |
1118 | msg.u.close_metadata.key = metadata_key; | |
1119 | ||
1120 | pthread_mutex_lock(socket->lock); | |
1121 | health_code_update(); | |
1122 | ||
1123 | ret = consumer_send_msg(socket, &msg); | |
1124 | if (ret < 0) { | |
1125 | goto end; | |
1126 | } | |
1127 | ||
1128 | end: | |
1129 | health_code_update(); | |
1130 | pthread_mutex_unlock(socket->lock); | |
1131 | return ret; | |
1132 | } | |
1133 | ||
1134 | /* | |
1135 | * Send a setup metdata command to consumer using the given channel key. | |
1136 | * | |
1137 | * Return 0 on success else a negative value. | |
1138 | */ | |
1139 | int consumer_setup_metadata(struct consumer_socket *socket, | |
1140 | uint64_t metadata_key) | |
1141 | { | |
1142 | int ret; | |
1143 | struct lttcomm_consumer_msg msg; | |
1144 | ||
1145 | assert(socket); | |
4ce514c4 | 1146 | assert(socket->fd); |
7972aab2 DG |
1147 | |
1148 | DBG2("Consumer setup metadata channel key %" PRIu64, metadata_key); | |
1149 | ||
1150 | msg.cmd_type = LTTNG_CONSUMER_SETUP_METADATA; | |
1151 | msg.u.setup_metadata.key = metadata_key; | |
1152 | ||
1153 | pthread_mutex_lock(socket->lock); | |
1154 | health_code_update(); | |
1155 | ||
1156 | ret = consumer_send_msg(socket, &msg); | |
1157 | if (ret < 0) { | |
1158 | goto end; | |
1159 | } | |
1160 | ||
1161 | end: | |
1162 | health_code_update(); | |
1163 | pthread_mutex_unlock(socket->lock); | |
1164 | return ret; | |
1165 | } | |
1166 | ||
1167 | /* | |
331744e3 | 1168 | * Send metadata string to consumer. Socket lock MUST be acquired. |
7972aab2 DG |
1169 | * |
1170 | * Return 0 on success else a negative value. | |
1171 | */ | |
1172 | int consumer_push_metadata(struct consumer_socket *socket, | |
1173 | uint64_t metadata_key, char *metadata_str, size_t len, | |
1174 | size_t target_offset) | |
1175 | { | |
1176 | int ret; | |
1177 | struct lttcomm_consumer_msg msg; | |
1178 | ||
1179 | assert(socket); | |
4ce514c4 | 1180 | assert(socket->fd); |
7972aab2 | 1181 | |
4ce514c4 | 1182 | DBG2("Consumer push metadata to consumer socket %d", *socket->fd); |
7972aab2 DG |
1183 | |
1184 | msg.cmd_type = LTTNG_CONSUMER_PUSH_METADATA; | |
1185 | msg.u.push_metadata.key = metadata_key; | |
1186 | msg.u.push_metadata.target_offset = target_offset; | |
1187 | msg.u.push_metadata.len = len; | |
1188 | ||
7972aab2 DG |
1189 | health_code_update(); |
1190 | ret = consumer_send_msg(socket, &msg); | |
331744e3 | 1191 | if (ret < 0 || len == 0) { |
7972aab2 DG |
1192 | goto end; |
1193 | } | |
1194 | ||
4ce514c4 | 1195 | DBG3("Consumer pushing metadata on sock %d of len %zu", *socket->fd, len); |
7972aab2 | 1196 | |
4ce514c4 | 1197 | ret = lttcomm_send_unix_sock(*socket->fd, metadata_str, len); |
7972aab2 DG |
1198 | if (ret < 0) { |
1199 | goto end; | |
1200 | } | |
1201 | ||
1202 | health_code_update(); | |
1203 | ret = consumer_recv_status_reply(socket); | |
1204 | if (ret < 0) { | |
1205 | goto end; | |
1206 | } | |
1207 | ||
1208 | end: | |
1209 | health_code_update(); | |
7972aab2 DG |
1210 | return ret; |
1211 | } | |
6dc3064a DG |
1212 | |
1213 | /* | |
1214 | * Ask the consumer to snapshot a specific channel using the key. | |
1215 | * | |
1216 | * Return 0 on success or else a negative error. | |
1217 | */ | |
1218 | int consumer_snapshot_channel(struct consumer_socket *socket, uint64_t key, | |
1219 | struct snapshot_output *output, int metadata, uid_t uid, gid_t gid, | |
5c786ded | 1220 | const char *session_path, int wait, int max_stream_size) |
6dc3064a DG |
1221 | { |
1222 | int ret; | |
1223 | struct lttcomm_consumer_msg msg; | |
1224 | ||
1225 | assert(socket); | |
4ce514c4 | 1226 | assert(socket->fd); |
6dc3064a DG |
1227 | assert(output); |
1228 | assert(output->consumer); | |
1229 | ||
1230 | DBG("Consumer snapshot channel key %" PRIu64, key); | |
1231 | ||
ee91bab2 | 1232 | memset(&msg, 0, sizeof(msg)); |
6dc3064a DG |
1233 | msg.cmd_type = LTTNG_CONSUMER_SNAPSHOT_CHANNEL; |
1234 | msg.u.snapshot_channel.key = key; | |
5c786ded | 1235 | msg.u.snapshot_channel.max_stream_size = max_stream_size; |
6dc3064a DG |
1236 | msg.u.snapshot_channel.metadata = metadata; |
1237 | ||
1238 | if (output->consumer->type == CONSUMER_DST_NET) { | |
1239 | msg.u.snapshot_channel.relayd_id = output->consumer->net_seq_index; | |
1240 | msg.u.snapshot_channel.use_relayd = 1; | |
1241 | ret = snprintf(msg.u.snapshot_channel.pathname, | |
1bfe7328 DG |
1242 | sizeof(msg.u.snapshot_channel.pathname), |
1243 | "%s/%s-%s-%" PRIu64 "%s", output->consumer->subdir, | |
1244 | output->name, output->datetime, output->nb_snapshot, | |
ee91bab2 | 1245 | session_path); |
6dc3064a DG |
1246 | if (ret < 0) { |
1247 | ret = -LTTNG_ERR_NOMEM; | |
1248 | goto error; | |
1249 | } | |
1250 | } else { | |
1251 | ret = snprintf(msg.u.snapshot_channel.pathname, | |
1bfe7328 DG |
1252 | sizeof(msg.u.snapshot_channel.pathname), |
1253 | "%s/%s-%s-%" PRIu64 "%s", output->consumer->dst.trace_path, | |
1254 | output->name, output->datetime, output->nb_snapshot, | |
1255 | session_path); | |
6dc3064a DG |
1256 | if (ret < 0) { |
1257 | ret = -LTTNG_ERR_NOMEM; | |
1258 | goto error; | |
1259 | } | |
07b86b52 | 1260 | msg.u.snapshot_channel.relayd_id = (uint64_t) -1ULL; |
6dc3064a DG |
1261 | |
1262 | /* Create directory. Ignore if exist. */ | |
1263 | ret = run_as_mkdir_recursive(msg.u.snapshot_channel.pathname, | |
1264 | S_IRWXU | S_IRWXG, uid, gid); | |
1265 | if (ret < 0) { | |
1266 | if (ret != -EEXIST) { | |
1267 | ERR("Trace directory creation error"); | |
1268 | goto error; | |
1269 | } | |
1270 | } | |
1271 | } | |
1272 | ||
1273 | health_code_update(); | |
1274 | ret = consumer_send_msg(socket, &msg); | |
1275 | if (ret < 0) { | |
1276 | goto error; | |
1277 | } | |
1278 | ||
1279 | error: | |
1280 | health_code_update(); | |
1281 | return ret; | |
1282 | } |