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> | |
ee91bab2 | 31 | #include <common/utils.h> |
00e2e675 DG |
32 | |
33 | #include "consumer.h" | |
7972aab2 DG |
34 | #include "health.h" |
35 | #include "ust-app.h" | |
0b2dc8df | 36 | #include "utils.h" |
00e2e675 | 37 | |
f50f23d9 DG |
38 | /* |
39 | * Receive a reply command status message from the consumer. Consumer socket | |
40 | * lock MUST be acquired before calling this function. | |
41 | * | |
42 | * Return 0 on success, -1 on recv error or a negative lttng error code which | |
43 | * was possibly returned by the consumer. | |
44 | */ | |
45 | int consumer_recv_status_reply(struct consumer_socket *sock) | |
46 | { | |
47 | int ret; | |
48 | struct lttcomm_consumer_status_msg reply; | |
49 | ||
50 | assert(sock); | |
51 | ||
52 | ret = lttcomm_recv_unix_sock(sock->fd, &reply, sizeof(reply)); | |
a6cd2b97 DG |
53 | if (ret <= 0) { |
54 | if (ret == 0) { | |
55 | /* Orderly shutdown. Don't return 0 which means success. */ | |
56 | ret = -1; | |
57 | } | |
3448e266 DG |
58 | /* The above call will print a PERROR on error. */ |
59 | DBG("Fail to receive status reply on sock %d", sock->fd); | |
f50f23d9 DG |
60 | goto end; |
61 | } | |
62 | ||
63 | if (reply.ret_code == LTTNG_OK) { | |
64 | /* All good. */ | |
65 | ret = 0; | |
66 | } else { | |
67 | ret = -reply.ret_code; | |
ffe60014 | 68 | DBG("Consumer ret code %d", ret); |
f50f23d9 DG |
69 | } |
70 | ||
71 | end: | |
72 | return ret; | |
73 | } | |
74 | ||
ffe60014 DG |
75 | /* |
76 | * Once the ASK_CHANNEL command is sent to the consumer, the channel | |
77 | * information are sent back. This call receives that data and populates key | |
78 | * and stream_count. | |
79 | * | |
80 | * On success return 0 and both key and stream_count are set. On error, a | |
81 | * negative value is sent back and both parameters are untouched. | |
82 | */ | |
83 | int consumer_recv_status_channel(struct consumer_socket *sock, | |
d88aee68 | 84 | uint64_t *key, unsigned int *stream_count) |
ffe60014 DG |
85 | { |
86 | int ret; | |
87 | struct lttcomm_consumer_status_channel reply; | |
88 | ||
89 | assert(sock); | |
90 | assert(stream_count); | |
91 | assert(key); | |
92 | ||
93 | ret = lttcomm_recv_unix_sock(sock->fd, &reply, sizeof(reply)); | |
94 | if (ret <= 0) { | |
95 | if (ret == 0) { | |
96 | /* Orderly shutdown. Don't return 0 which means success. */ | |
97 | ret = -1; | |
98 | } | |
99 | /* The above call will print a PERROR on error. */ | |
100 | DBG("Fail to receive status reply on sock %d", sock->fd); | |
101 | goto end; | |
102 | } | |
103 | ||
104 | /* An error is possible so don't touch the key and stream_count. */ | |
105 | if (reply.ret_code != LTTNG_OK) { | |
106 | ret = -1; | |
107 | goto end; | |
108 | } | |
109 | ||
110 | *key = reply.key; | |
111 | *stream_count = reply.stream_count; | |
112 | ||
113 | end: | |
114 | return ret; | |
115 | } | |
116 | ||
2f77fc4b DG |
117 | /* |
118 | * Send destroy relayd command to consumer. | |
119 | * | |
120 | * On success return positive value. On error, negative value. | |
121 | */ | |
122 | int consumer_send_destroy_relayd(struct consumer_socket *sock, | |
123 | struct consumer_output *consumer) | |
124 | { | |
125 | int ret; | |
126 | struct lttcomm_consumer_msg msg; | |
127 | ||
128 | assert(consumer); | |
129 | assert(sock); | |
130 | ||
ffe60014 | 131 | DBG2("Sending destroy relayd command to consumer sock %d", sock->fd); |
2f77fc4b DG |
132 | |
133 | /* Bail out if consumer is disabled */ | |
134 | if (!consumer->enabled) { | |
f73fabfd | 135 | ret = LTTNG_OK; |
2f77fc4b DG |
136 | DBG3("Consumer is disabled"); |
137 | goto error; | |
138 | } | |
139 | ||
140 | msg.cmd_type = LTTNG_CONSUMER_DESTROY_RELAYD; | |
141 | msg.u.destroy_relayd.net_seq_idx = consumer->net_seq_index; | |
142 | ||
143 | pthread_mutex_lock(sock->lock); | |
144 | ret = lttcomm_send_unix_sock(sock->fd, &msg, sizeof(msg)); | |
2f77fc4b | 145 | if (ret < 0) { |
c5c45efa DG |
146 | /* Indicate that the consumer is probably closing at this point. */ |
147 | DBG("send consumer destroy relayd command"); | |
f50f23d9 | 148 | goto error_send; |
2f77fc4b DG |
149 | } |
150 | ||
f50f23d9 DG |
151 | /* Don't check the return value. The caller will do it. */ |
152 | ret = consumer_recv_status_reply(sock); | |
153 | ||
2f77fc4b DG |
154 | DBG2("Consumer send destroy relayd command done"); |
155 | ||
f50f23d9 DG |
156 | error_send: |
157 | pthread_mutex_unlock(sock->lock); | |
2f77fc4b DG |
158 | error: |
159 | return ret; | |
160 | } | |
161 | ||
162 | /* | |
163 | * For each consumer socket in the consumer output object, send a destroy | |
164 | * relayd command. | |
165 | */ | |
166 | void consumer_output_send_destroy_relayd(struct consumer_output *consumer) | |
167 | { | |
2f77fc4b DG |
168 | struct lttng_ht_iter iter; |
169 | struct consumer_socket *socket; | |
170 | ||
171 | assert(consumer); | |
172 | ||
173 | /* Destroy any relayd connection */ | |
6dc3064a | 174 | if (consumer->type == CONSUMER_DST_NET) { |
2f77fc4b DG |
175 | rcu_read_lock(); |
176 | cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket, | |
177 | node.node) { | |
c617c0c6 MD |
178 | int ret; |
179 | ||
2f77fc4b DG |
180 | /* Send destroy relayd command */ |
181 | ret = consumer_send_destroy_relayd(socket, consumer); | |
182 | if (ret < 0) { | |
c5c45efa | 183 | DBG("Unable to send destroy relayd command to consumer"); |
2f77fc4b DG |
184 | /* Continue since we MUST delete everything at this point. */ |
185 | } | |
186 | } | |
187 | rcu_read_unlock(); | |
188 | } | |
189 | } | |
190 | ||
a4b92340 DG |
191 | /* |
192 | * From a consumer_data structure, allocate and add a consumer socket to the | |
193 | * consumer output. | |
194 | * | |
195 | * Return 0 on success, else negative value on error | |
196 | */ | |
197 | int consumer_create_socket(struct consumer_data *data, | |
198 | struct consumer_output *output) | |
199 | { | |
200 | int ret = 0; | |
201 | struct consumer_socket *socket; | |
202 | ||
203 | assert(data); | |
204 | ||
205 | if (output == NULL || data->cmd_sock < 0) { | |
206 | /* | |
207 | * Not an error. Possible there is simply not spawned consumer or it's | |
208 | * disabled for the tracing session asking the socket. | |
209 | */ | |
210 | goto error; | |
211 | } | |
212 | ||
213 | rcu_read_lock(); | |
214 | socket = consumer_find_socket(data->cmd_sock, output); | |
215 | rcu_read_unlock(); | |
216 | if (socket == NULL) { | |
217 | socket = consumer_allocate_socket(data->cmd_sock); | |
218 | if (socket == NULL) { | |
219 | ret = -1; | |
220 | goto error; | |
221 | } | |
222 | ||
2f77fc4b | 223 | socket->registered = 0; |
a4b92340 DG |
224 | socket->lock = &data->lock; |
225 | rcu_read_lock(); | |
226 | consumer_add_socket(socket, output); | |
227 | rcu_read_unlock(); | |
228 | } | |
229 | ||
6dc3064a DG |
230 | socket->type = data->type; |
231 | ||
a4b92340 DG |
232 | DBG3("Consumer socket created (fd: %d) and added to output", |
233 | data->cmd_sock); | |
234 | ||
235 | error: | |
236 | return ret; | |
237 | } | |
238 | ||
7972aab2 DG |
239 | /* |
240 | * Return the consumer socket from the given consumer output with the right | |
241 | * bitness. On error, returns NULL. | |
242 | * | |
243 | * The caller MUST acquire a rcu read side lock and keep it until the socket | |
244 | * object reference is not needed anymore. | |
245 | */ | |
246 | struct consumer_socket *consumer_find_socket_by_bitness(int bits, | |
247 | struct consumer_output *consumer) | |
248 | { | |
249 | int consumer_fd; | |
250 | struct consumer_socket *socket = NULL; | |
251 | ||
252 | switch (bits) { | |
253 | case 64: | |
254 | consumer_fd = uatomic_read(&ust_consumerd64_fd); | |
255 | break; | |
256 | case 32: | |
257 | consumer_fd = uatomic_read(&ust_consumerd32_fd); | |
258 | break; | |
259 | default: | |
260 | assert(0); | |
261 | goto end; | |
262 | } | |
263 | ||
264 | socket = consumer_find_socket(consumer_fd, consumer); | |
265 | if (!socket) { | |
266 | ERR("Consumer socket fd %d not found in consumer obj %p", | |
267 | consumer_fd, consumer); | |
268 | } | |
269 | ||
270 | end: | |
271 | return socket; | |
272 | } | |
273 | ||
173af62f DG |
274 | /* |
275 | * Find a consumer_socket in a consumer_output hashtable. Read side lock must | |
276 | * be acquired before calling this function and across use of the | |
277 | * returned consumer_socket. | |
278 | */ | |
279 | struct consumer_socket *consumer_find_socket(int key, | |
280 | struct consumer_output *consumer) | |
281 | { | |
282 | struct lttng_ht_iter iter; | |
283 | struct lttng_ht_node_ulong *node; | |
284 | struct consumer_socket *socket = NULL; | |
285 | ||
286 | /* Negative keys are lookup failures */ | |
a4b92340 | 287 | if (key < 0 || consumer == NULL) { |
173af62f DG |
288 | return NULL; |
289 | } | |
290 | ||
291 | lttng_ht_lookup(consumer->socks, (void *)((unsigned long) key), | |
292 | &iter); | |
293 | node = lttng_ht_iter_get_node_ulong(&iter); | |
294 | if (node != NULL) { | |
295 | socket = caa_container_of(node, struct consumer_socket, node); | |
296 | } | |
297 | ||
298 | return socket; | |
299 | } | |
300 | ||
301 | /* | |
302 | * Allocate a new consumer_socket and return the pointer. | |
303 | */ | |
304 | struct consumer_socket *consumer_allocate_socket(int fd) | |
305 | { | |
306 | struct consumer_socket *socket = NULL; | |
307 | ||
308 | socket = zmalloc(sizeof(struct consumer_socket)); | |
309 | if (socket == NULL) { | |
310 | PERROR("zmalloc consumer socket"); | |
311 | goto error; | |
312 | } | |
313 | ||
314 | socket->fd = fd; | |
315 | lttng_ht_node_init_ulong(&socket->node, fd); | |
316 | ||
317 | error: | |
318 | return socket; | |
319 | } | |
320 | ||
321 | /* | |
322 | * Add consumer socket to consumer output object. Read side lock must be | |
323 | * acquired before calling this function. | |
324 | */ | |
325 | void consumer_add_socket(struct consumer_socket *sock, | |
326 | struct consumer_output *consumer) | |
327 | { | |
328 | assert(sock); | |
329 | assert(consumer); | |
330 | ||
331 | lttng_ht_add_unique_ulong(consumer->socks, &sock->node); | |
332 | } | |
333 | ||
334 | /* | |
335 | * Delte consumer socket to consumer output object. Read side lock must be | |
336 | * acquired before calling this function. | |
337 | */ | |
338 | void consumer_del_socket(struct consumer_socket *sock, | |
339 | struct consumer_output *consumer) | |
340 | { | |
341 | int ret; | |
342 | struct lttng_ht_iter iter; | |
343 | ||
344 | assert(sock); | |
345 | assert(consumer); | |
346 | ||
347 | iter.iter.node = &sock->node.node; | |
348 | ret = lttng_ht_del(consumer->socks, &iter); | |
349 | assert(!ret); | |
350 | } | |
351 | ||
352 | /* | |
353 | * RCU destroy call function. | |
354 | */ | |
355 | static void destroy_socket_rcu(struct rcu_head *head) | |
356 | { | |
357 | struct lttng_ht_node_ulong *node = | |
358 | caa_container_of(head, struct lttng_ht_node_ulong, head); | |
359 | struct consumer_socket *socket = | |
360 | caa_container_of(node, struct consumer_socket, node); | |
361 | ||
362 | free(socket); | |
363 | } | |
364 | ||
365 | /* | |
366 | * Destroy and free socket pointer in a call RCU. Read side lock must be | |
367 | * acquired before calling this function. | |
368 | */ | |
369 | void consumer_destroy_socket(struct consumer_socket *sock) | |
370 | { | |
371 | assert(sock); | |
372 | ||
373 | /* | |
374 | * We DO NOT close the file descriptor here since it is global to the | |
2f77fc4b DG |
375 | * session daemon and is closed only if the consumer dies or a custom |
376 | * consumer was registered, | |
173af62f | 377 | */ |
2f77fc4b DG |
378 | if (sock->registered) { |
379 | DBG3("Consumer socket was registered. Closing fd %d", sock->fd); | |
380 | lttcomm_close_unix_sock(sock->fd); | |
381 | } | |
173af62f DG |
382 | |
383 | call_rcu(&sock->node.head, destroy_socket_rcu); | |
384 | } | |
385 | ||
00e2e675 DG |
386 | /* |
387 | * Allocate and assign data to a consumer_output object. | |
388 | * | |
389 | * Return pointer to structure. | |
390 | */ | |
391 | struct consumer_output *consumer_create_output(enum consumer_dst_type type) | |
392 | { | |
393 | struct consumer_output *output = NULL; | |
394 | ||
395 | output = zmalloc(sizeof(struct consumer_output)); | |
396 | if (output == NULL) { | |
397 | PERROR("zmalloc consumer_output"); | |
398 | goto error; | |
399 | } | |
400 | ||
401 | /* By default, consumer output is enabled */ | |
402 | output->enabled = 1; | |
403 | output->type = type; | |
d88aee68 | 404 | output->net_seq_index = (uint64_t) -1ULL; |
173af62f DG |
405 | |
406 | output->socks = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG); | |
00e2e675 DG |
407 | |
408 | error: | |
409 | return output; | |
410 | } | |
411 | ||
412 | /* | |
413 | * Delete the consumer_output object from the list and free the ptr. | |
36b588ed MD |
414 | * |
415 | * Should *NOT* be called with RCU read-side lock held. | |
00e2e675 DG |
416 | */ |
417 | void consumer_destroy_output(struct consumer_output *obj) | |
418 | { | |
419 | if (obj == NULL) { | |
420 | return; | |
421 | } | |
422 | ||
173af62f DG |
423 | if (obj->socks) { |
424 | struct lttng_ht_iter iter; | |
425 | struct consumer_socket *socket; | |
426 | ||
2f77fc4b | 427 | rcu_read_lock(); |
173af62f | 428 | cds_lfht_for_each_entry(obj->socks->ht, &iter.iter, socket, node.node) { |
2f77fc4b | 429 | consumer_del_socket(socket, obj); |
173af62f DG |
430 | consumer_destroy_socket(socket); |
431 | } | |
2f77fc4b DG |
432 | rcu_read_unlock(); |
433 | ||
434 | /* Finally destroy HT */ | |
0b2dc8df | 435 | ht_cleanup_push(obj->socks); |
00e2e675 | 436 | } |
173af62f | 437 | |
00e2e675 DG |
438 | free(obj); |
439 | } | |
440 | ||
441 | /* | |
442 | * Copy consumer output and returned the newly allocated copy. | |
36b588ed MD |
443 | * |
444 | * Should *NOT* be called with RCU read-side lock held. | |
00e2e675 DG |
445 | */ |
446 | struct consumer_output *consumer_copy_output(struct consumer_output *obj) | |
447 | { | |
6dc3064a | 448 | int ret; |
09a90bcd | 449 | struct lttng_ht *tmp_ht_ptr; |
00e2e675 DG |
450 | struct consumer_output *output; |
451 | ||
452 | assert(obj); | |
453 | ||
454 | output = consumer_create_output(obj->type); | |
455 | if (output == NULL) { | |
456 | goto error; | |
457 | } | |
09a90bcd DG |
458 | /* Avoid losing the HT reference after the memcpy() */ |
459 | tmp_ht_ptr = output->socks; | |
00e2e675 DG |
460 | |
461 | memcpy(output, obj, sizeof(struct consumer_output)); | |
462 | ||
09a90bcd DG |
463 | /* Putting back the HT pointer and start copying socket(s). */ |
464 | output->socks = tmp_ht_ptr; | |
173af62f | 465 | |
6dc3064a DG |
466 | ret = consumer_copy_sockets(output, obj); |
467 | if (ret < 0) { | |
468 | goto malloc_error; | |
469 | } | |
470 | ||
471 | error: | |
472 | return output; | |
473 | ||
474 | malloc_error: | |
475 | consumer_destroy_output(output); | |
476 | return NULL; | |
477 | } | |
478 | ||
479 | /* | |
480 | * Copy consumer sockets from src to dst. | |
481 | * | |
482 | * Return 0 on success or else a negative value. | |
483 | */ | |
484 | int consumer_copy_sockets(struct consumer_output *dst, | |
485 | struct consumer_output *src) | |
486 | { | |
487 | int ret = 0; | |
488 | struct lttng_ht_iter iter; | |
489 | struct consumer_socket *socket, *copy_sock; | |
490 | ||
491 | assert(dst); | |
492 | assert(src); | |
493 | ||
b82c5c4d | 494 | rcu_read_lock(); |
6dc3064a DG |
495 | cds_lfht_for_each_entry(src->socks->ht, &iter.iter, socket, node.node) { |
496 | /* Ignore socket that are already there. */ | |
497 | copy_sock = consumer_find_socket(socket->fd, dst); | |
498 | if (copy_sock) { | |
499 | continue; | |
500 | } | |
501 | ||
173af62f DG |
502 | /* Create new socket object. */ |
503 | copy_sock = consumer_allocate_socket(socket->fd); | |
504 | if (copy_sock == NULL) { | |
b82c5c4d | 505 | rcu_read_unlock(); |
6dc3064a DG |
506 | ret = -ENOMEM; |
507 | goto error; | |
173af62f DG |
508 | } |
509 | ||
09a90bcd | 510 | copy_sock->registered = socket->registered; |
6dc3064a DG |
511 | /* |
512 | * This is valid because this lock is shared accross all consumer | |
513 | * object being the global lock of the consumer data structure of the | |
514 | * session daemon. | |
515 | */ | |
173af62f | 516 | copy_sock->lock = socket->lock; |
6dc3064a | 517 | consumer_add_socket(copy_sock, dst); |
173af62f | 518 | } |
b82c5c4d | 519 | rcu_read_unlock(); |
173af62f | 520 | |
00e2e675 | 521 | error: |
6dc3064a | 522 | return ret; |
00e2e675 DG |
523 | } |
524 | ||
525 | /* | |
526 | * Set network URI to the consumer output object. | |
527 | * | |
ad20f474 DG |
528 | * Return 0 on success. Return 1 if the URI were equal. Else, negative value on |
529 | * error. | |
00e2e675 DG |
530 | */ |
531 | int consumer_set_network_uri(struct consumer_output *obj, | |
532 | struct lttng_uri *uri) | |
533 | { | |
534 | int ret; | |
535 | char tmp_path[PATH_MAX]; | |
536 | char hostname[HOST_NAME_MAX]; | |
537 | struct lttng_uri *dst_uri = NULL; | |
538 | ||
539 | /* Code flow error safety net. */ | |
540 | assert(obj); | |
541 | assert(uri); | |
542 | ||
543 | switch (uri->stype) { | |
544 | case LTTNG_STREAM_CONTROL: | |
545 | dst_uri = &obj->dst.net.control; | |
546 | obj->dst.net.control_isset = 1; | |
547 | if (uri->port == 0) { | |
548 | /* Assign default port. */ | |
549 | uri->port = DEFAULT_NETWORK_CONTROL_PORT; | |
a74934ba DG |
550 | } else { |
551 | if (obj->dst.net.data_isset && uri->port == | |
552 | obj->dst.net.data.port) { | |
553 | ret = -LTTNG_ERR_INVALID; | |
554 | goto error; | |
555 | } | |
00e2e675 | 556 | } |
ad20f474 | 557 | DBG3("Consumer control URI set with port %d", uri->port); |
00e2e675 DG |
558 | break; |
559 | case LTTNG_STREAM_DATA: | |
560 | dst_uri = &obj->dst.net.data; | |
561 | obj->dst.net.data_isset = 1; | |
562 | if (uri->port == 0) { | |
563 | /* Assign default port. */ | |
564 | uri->port = DEFAULT_NETWORK_DATA_PORT; | |
a74934ba DG |
565 | } else { |
566 | if (obj->dst.net.control_isset && uri->port == | |
567 | obj->dst.net.control.port) { | |
568 | ret = -LTTNG_ERR_INVALID; | |
569 | goto error; | |
570 | } | |
00e2e675 | 571 | } |
ad20f474 | 572 | DBG3("Consumer data URI set with port %d", uri->port); |
00e2e675 DG |
573 | break; |
574 | default: | |
575 | ERR("Set network uri type unknown %d", uri->stype); | |
a74934ba | 576 | ret = -LTTNG_ERR_INVALID; |
00e2e675 DG |
577 | goto error; |
578 | } | |
579 | ||
580 | ret = uri_compare(dst_uri, uri); | |
581 | if (!ret) { | |
582 | /* Same URI, don't touch it and return success. */ | |
583 | DBG3("URI network compare are the same"); | |
ad20f474 | 584 | goto equal; |
00e2e675 DG |
585 | } |
586 | ||
587 | /* URIs were not equal, replacing it. */ | |
588 | memset(dst_uri, 0, sizeof(struct lttng_uri)); | |
589 | memcpy(dst_uri, uri, sizeof(struct lttng_uri)); | |
590 | obj->type = CONSUMER_DST_NET; | |
591 | ||
592 | /* Handle subdir and add hostname in front. */ | |
593 | if (dst_uri->stype == LTTNG_STREAM_CONTROL) { | |
594 | /* Get hostname to append it in the pathname */ | |
595 | ret = gethostname(hostname, sizeof(hostname)); | |
596 | if (ret < 0) { | |
597 | PERROR("gethostname. Fallback on default localhost"); | |
598 | strncpy(hostname, "localhost", sizeof(hostname)); | |
599 | } | |
600 | hostname[sizeof(hostname) - 1] = '\0'; | |
601 | ||
602 | /* Setup consumer subdir if none present in the control URI */ | |
603 | if (strlen(dst_uri->subdir) == 0) { | |
604 | ret = snprintf(tmp_path, sizeof(tmp_path), "%s/%s", | |
605 | hostname, obj->subdir); | |
606 | } else { | |
607 | ret = snprintf(tmp_path, sizeof(tmp_path), "%s/%s", | |
608 | hostname, dst_uri->subdir); | |
609 | } | |
610 | if (ret < 0) { | |
611 | PERROR("snprintf set consumer uri subdir"); | |
a74934ba | 612 | ret = -LTTNG_ERR_NOMEM; |
00e2e675 DG |
613 | goto error; |
614 | } | |
615 | ||
616 | strncpy(obj->subdir, tmp_path, sizeof(obj->subdir)); | |
617 | DBG3("Consumer set network uri subdir path %s", tmp_path); | |
618 | } | |
619 | ||
00e2e675 | 620 | return 0; |
ad20f474 DG |
621 | equal: |
622 | return 1; | |
00e2e675 | 623 | error: |
a74934ba | 624 | return ret; |
00e2e675 DG |
625 | } |
626 | ||
627 | /* | |
628 | * Send file descriptor to consumer via sock. | |
629 | */ | |
f50f23d9 | 630 | int consumer_send_fds(struct consumer_socket *sock, int *fds, size_t nb_fd) |
00e2e675 DG |
631 | { |
632 | int ret; | |
633 | ||
634 | assert(fds); | |
f50f23d9 | 635 | assert(sock); |
00e2e675 DG |
636 | assert(nb_fd > 0); |
637 | ||
f50f23d9 | 638 | ret = lttcomm_send_fds_unix_sock(sock->fd, fds, nb_fd); |
00e2e675 | 639 | if (ret < 0) { |
3448e266 DG |
640 | /* The above call will print a PERROR on error. */ |
641 | DBG("Error when sending consumer fds on sock %d", sock->fd); | |
00e2e675 DG |
642 | goto error; |
643 | } | |
644 | ||
f50f23d9 DG |
645 | ret = consumer_recv_status_reply(sock); |
646 | ||
00e2e675 DG |
647 | error: |
648 | return ret; | |
649 | } | |
650 | ||
ffe60014 DG |
651 | /* |
652 | * Consumer send communication message structure to consumer. | |
653 | */ | |
654 | int consumer_send_msg(struct consumer_socket *sock, | |
655 | struct lttcomm_consumer_msg *msg) | |
656 | { | |
657 | int ret; | |
658 | ||
659 | assert(msg); | |
660 | assert(sock); | |
661 | assert(sock->fd >= 0); | |
662 | ||
663 | ret = lttcomm_send_unix_sock(sock->fd, msg, | |
664 | sizeof(struct lttcomm_consumer_msg)); | |
665 | if (ret < 0) { | |
666 | /* The above call will print a PERROR on error. */ | |
667 | DBG("Error when sending consumer channel on sock %d", sock->fd); | |
668 | goto error; | |
669 | } | |
670 | ||
671 | ret = consumer_recv_status_reply(sock); | |
672 | ||
673 | error: | |
674 | return ret; | |
675 | } | |
676 | ||
00e2e675 DG |
677 | /* |
678 | * Consumer send channel communication message structure to consumer. | |
679 | */ | |
f50f23d9 DG |
680 | int consumer_send_channel(struct consumer_socket *sock, |
681 | struct lttcomm_consumer_msg *msg) | |
00e2e675 DG |
682 | { |
683 | int ret; | |
684 | ||
685 | assert(msg); | |
f50f23d9 DG |
686 | assert(sock); |
687 | assert(sock->fd >= 0); | |
00e2e675 | 688 | |
f50f23d9 | 689 | ret = lttcomm_send_unix_sock(sock->fd, msg, |
00e2e675 DG |
690 | sizeof(struct lttcomm_consumer_msg)); |
691 | if (ret < 0) { | |
3448e266 DG |
692 | /* The above call will print a PERROR on error. */ |
693 | DBG("Error when sending consumer channel on sock %d", sock->fd); | |
00e2e675 DG |
694 | goto error; |
695 | } | |
696 | ||
f50f23d9 DG |
697 | ret = consumer_recv_status_reply(sock); |
698 | ||
00e2e675 DG |
699 | error: |
700 | return ret; | |
701 | } | |
702 | ||
ffe60014 DG |
703 | /* |
704 | * Populate the given consumer msg structure with the ask_channel command | |
705 | * information. | |
706 | */ | |
707 | void consumer_init_ask_channel_comm_msg(struct lttcomm_consumer_msg *msg, | |
708 | uint64_t subbuf_size, | |
709 | uint64_t num_subbuf, | |
710 | int overwrite, | |
711 | unsigned int switch_timer_interval, | |
712 | unsigned int read_timer_interval, | |
713 | int output, | |
714 | int type, | |
715 | uint64_t session_id, | |
716 | const char *pathname, | |
717 | const char *name, | |
718 | uid_t uid, | |
719 | gid_t gid, | |
d88aee68 DG |
720 | uint64_t relayd_id, |
721 | uint64_t key, | |
7972aab2 | 722 | unsigned char *uuid, |
1624d5b7 JD |
723 | uint32_t chan_id, |
724 | uint64_t tracefile_size, | |
2bba9e53 | 725 | uint64_t tracefile_count, |
1950109e | 726 | uint64_t session_id_per_pid, |
2bba9e53 | 727 | unsigned int monitor) |
ffe60014 DG |
728 | { |
729 | assert(msg); | |
730 | ||
731 | /* Zeroed structure */ | |
732 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
733 | ||
734 | msg->cmd_type = LTTNG_CONSUMER_ASK_CHANNEL_CREATION; | |
735 | msg->u.ask_channel.subbuf_size = subbuf_size; | |
736 | msg->u.ask_channel.num_subbuf = num_subbuf ; | |
737 | msg->u.ask_channel.overwrite = overwrite; | |
738 | msg->u.ask_channel.switch_timer_interval = switch_timer_interval; | |
739 | msg->u.ask_channel.read_timer_interval = read_timer_interval; | |
740 | msg->u.ask_channel.output = output; | |
741 | msg->u.ask_channel.type = type; | |
742 | msg->u.ask_channel.session_id = session_id; | |
1950109e | 743 | msg->u.ask_channel.session_id_per_pid = session_id_per_pid; |
ffe60014 DG |
744 | msg->u.ask_channel.uid = uid; |
745 | msg->u.ask_channel.gid = gid; | |
746 | msg->u.ask_channel.relayd_id = relayd_id; | |
747 | msg->u.ask_channel.key = key; | |
7972aab2 | 748 | msg->u.ask_channel.chan_id = chan_id; |
1624d5b7 JD |
749 | msg->u.ask_channel.tracefile_size = tracefile_size; |
750 | msg->u.ask_channel.tracefile_count = tracefile_count; | |
2bba9e53 | 751 | msg->u.ask_channel.monitor = monitor; |
ffe60014 DG |
752 | |
753 | memcpy(msg->u.ask_channel.uuid, uuid, sizeof(msg->u.ask_channel.uuid)); | |
754 | ||
755 | strncpy(msg->u.ask_channel.pathname, pathname, | |
756 | sizeof(msg->u.ask_channel.pathname)); | |
757 | msg->u.ask_channel.pathname[sizeof(msg->u.ask_channel.pathname)-1] = '\0'; | |
758 | ||
759 | strncpy(msg->u.ask_channel.name, name, sizeof(msg->u.ask_channel.name)); | |
760 | msg->u.ask_channel.name[sizeof(msg->u.ask_channel.name) - 1] = '\0'; | |
761 | } | |
762 | ||
00e2e675 DG |
763 | /* |
764 | * Init channel communication message structure. | |
765 | */ | |
766 | void consumer_init_channel_comm_msg(struct lttcomm_consumer_msg *msg, | |
767 | enum lttng_consumer_command cmd, | |
d88aee68 | 768 | uint64_t channel_key, |
ffe60014 DG |
769 | uint64_t session_id, |
770 | const char *pathname, | |
771 | uid_t uid, | |
772 | gid_t gid, | |
d88aee68 | 773 | uint64_t relayd_id, |
c30aaa51 | 774 | const char *name, |
ffe60014 DG |
775 | unsigned int nb_init_streams, |
776 | enum lttng_event_output output, | |
1624d5b7 JD |
777 | int type, |
778 | uint64_t tracefile_size, | |
2bba9e53 DG |
779 | uint64_t tracefile_count, |
780 | unsigned int monitor) | |
00e2e675 DG |
781 | { |
782 | assert(msg); | |
783 | ||
00e2e675 DG |
784 | /* Zeroed structure */ |
785 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
786 | ||
787 | /* Send channel */ | |
788 | msg->cmd_type = cmd; | |
789 | msg->u.channel.channel_key = channel_key; | |
ffe60014 DG |
790 | msg->u.channel.session_id = session_id; |
791 | msg->u.channel.uid = uid; | |
792 | msg->u.channel.gid = gid; | |
793 | msg->u.channel.relayd_id = relayd_id; | |
c30aaa51 | 794 | msg->u.channel.nb_init_streams = nb_init_streams; |
ffe60014 DG |
795 | msg->u.channel.output = output; |
796 | msg->u.channel.type = type; | |
1624d5b7 JD |
797 | msg->u.channel.tracefile_size = tracefile_size; |
798 | msg->u.channel.tracefile_count = tracefile_count; | |
2bba9e53 | 799 | msg->u.channel.monitor = monitor; |
ffe60014 DG |
800 | |
801 | strncpy(msg->u.channel.pathname, pathname, | |
802 | sizeof(msg->u.channel.pathname)); | |
803 | msg->u.channel.pathname[sizeof(msg->u.channel.pathname) - 1] = '\0'; | |
804 | ||
805 | strncpy(msg->u.channel.name, name, sizeof(msg->u.channel.name)); | |
806 | msg->u.channel.name[sizeof(msg->u.channel.name) - 1] = '\0'; | |
00e2e675 DG |
807 | } |
808 | ||
809 | /* | |
810 | * Init stream communication message structure. | |
811 | */ | |
812 | void consumer_init_stream_comm_msg(struct lttcomm_consumer_msg *msg, | |
813 | enum lttng_consumer_command cmd, | |
d88aee68 DG |
814 | uint64_t channel_key, |
815 | uint64_t stream_key, | |
ffe60014 | 816 | int cpu) |
00e2e675 DG |
817 | { |
818 | assert(msg); | |
819 | ||
820 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
821 | ||
00e2e675 DG |
822 | msg->cmd_type = cmd; |
823 | msg->u.stream.channel_key = channel_key; | |
824 | msg->u.stream.stream_key = stream_key; | |
ffe60014 | 825 | msg->u.stream.cpu = cpu; |
00e2e675 DG |
826 | } |
827 | ||
828 | /* | |
829 | * Send stream communication structure to the consumer. | |
830 | */ | |
f50f23d9 DG |
831 | int consumer_send_stream(struct consumer_socket *sock, |
832 | struct consumer_output *dst, struct lttcomm_consumer_msg *msg, | |
833 | int *fds, size_t nb_fd) | |
00e2e675 DG |
834 | { |
835 | int ret; | |
836 | ||
837 | assert(msg); | |
838 | assert(dst); | |
f50f23d9 | 839 | assert(sock); |
ffe60014 | 840 | assert(fds); |
00e2e675 DG |
841 | |
842 | /* Send on socket */ | |
f50f23d9 | 843 | ret = lttcomm_send_unix_sock(sock->fd, msg, |
00e2e675 DG |
844 | sizeof(struct lttcomm_consumer_msg)); |
845 | if (ret < 0) { | |
3448e266 DG |
846 | /* The above call will print a PERROR on error. */ |
847 | DBG("Error when sending consumer stream on sock %d", sock->fd); | |
00e2e675 DG |
848 | goto error; |
849 | } | |
850 | ||
f50f23d9 DG |
851 | ret = consumer_recv_status_reply(sock); |
852 | if (ret < 0) { | |
853 | goto error; | |
854 | } | |
855 | ||
00e2e675 DG |
856 | ret = consumer_send_fds(sock, fds, nb_fd); |
857 | if (ret < 0) { | |
858 | goto error; | |
859 | } | |
860 | ||
861 | error: | |
862 | return ret; | |
863 | } | |
37278a1e DG |
864 | |
865 | /* | |
866 | * Send relayd socket to consumer associated with a session name. | |
867 | * | |
868 | * On success return positive value. On error, negative value. | |
869 | */ | |
f50f23d9 | 870 | int consumer_send_relayd_socket(struct consumer_socket *consumer_sock, |
6151a90f | 871 | struct lttcomm_relayd_sock *rsock, struct consumer_output *consumer, |
d88aee68 | 872 | enum lttng_stream_type type, uint64_t session_id) |
37278a1e DG |
873 | { |
874 | int ret; | |
875 | struct lttcomm_consumer_msg msg; | |
876 | ||
877 | /* Code flow error. Safety net. */ | |
6151a90f | 878 | assert(rsock); |
37278a1e | 879 | assert(consumer); |
f50f23d9 | 880 | assert(consumer_sock); |
37278a1e DG |
881 | |
882 | /* Bail out if consumer is disabled */ | |
883 | if (!consumer->enabled) { | |
f73fabfd | 884 | ret = LTTNG_OK; |
37278a1e DG |
885 | goto error; |
886 | } | |
887 | ||
888 | msg.cmd_type = LTTNG_CONSUMER_ADD_RELAYD_SOCKET; | |
889 | /* | |
890 | * Assign network consumer output index using the temporary consumer since | |
891 | * this call should only be made from within a set_consumer_uri() function | |
892 | * call in the session daemon. | |
893 | */ | |
894 | msg.u.relayd_sock.net_index = consumer->net_seq_index; | |
895 | msg.u.relayd_sock.type = type; | |
46e6455f | 896 | msg.u.relayd_sock.session_id = session_id; |
6151a90f | 897 | memcpy(&msg.u.relayd_sock.sock, rsock, sizeof(msg.u.relayd_sock.sock)); |
37278a1e | 898 | |
f50f23d9 DG |
899 | DBG3("Sending relayd sock info to consumer on %d", consumer_sock->fd); |
900 | ret = lttcomm_send_unix_sock(consumer_sock->fd, &msg, sizeof(msg)); | |
37278a1e | 901 | if (ret < 0) { |
3448e266 | 902 | /* The above call will print a PERROR on error. */ |
6151a90f | 903 | DBG("Error when sending relayd sockets on sock %d", rsock->sock.fd); |
37278a1e DG |
904 | goto error; |
905 | } | |
906 | ||
f50f23d9 DG |
907 | ret = consumer_recv_status_reply(consumer_sock); |
908 | if (ret < 0) { | |
909 | goto error; | |
910 | } | |
911 | ||
37278a1e | 912 | DBG3("Sending relayd socket file descriptor to consumer"); |
6151a90f | 913 | ret = consumer_send_fds(consumer_sock, &rsock->sock.fd, 1); |
37278a1e DG |
914 | if (ret < 0) { |
915 | goto error; | |
916 | } | |
917 | ||
918 | DBG2("Consumer relayd socket sent"); | |
919 | ||
920 | error: | |
921 | return ret; | |
922 | } | |
173af62f DG |
923 | |
924 | /* | |
2f77fc4b DG |
925 | * Set consumer subdirectory using the session name and a generated datetime if |
926 | * needed. This is appended to the current subdirectory. | |
173af62f | 927 | */ |
2f77fc4b DG |
928 | int consumer_set_subdir(struct consumer_output *consumer, |
929 | const char *session_name) | |
173af62f | 930 | { |
2f77fc4b DG |
931 | int ret = 0; |
932 | unsigned int have_default_name = 0; | |
933 | char datetime[16], tmp_path[PATH_MAX]; | |
934 | time_t rawtime; | |
935 | struct tm *timeinfo; | |
173af62f DG |
936 | |
937 | assert(consumer); | |
2f77fc4b DG |
938 | assert(session_name); |
939 | ||
940 | memset(tmp_path, 0, sizeof(tmp_path)); | |
941 | ||
942 | /* Flag if we have a default session. */ | |
943 | if (strncmp(session_name, DEFAULT_SESSION_NAME "-", | |
944 | strlen(DEFAULT_SESSION_NAME) + 1) == 0) { | |
945 | have_default_name = 1; | |
946 | } else { | |
947 | /* Get date and time for session path */ | |
948 | time(&rawtime); | |
949 | timeinfo = localtime(&rawtime); | |
950 | strftime(datetime, sizeof(datetime), "%Y%m%d-%H%M%S", timeinfo); | |
173af62f DG |
951 | } |
952 | ||
2f77fc4b DG |
953 | if (have_default_name) { |
954 | ret = snprintf(tmp_path, sizeof(tmp_path), | |
955 | "%s/%s", consumer->subdir, session_name); | |
956 | } else { | |
957 | ret = snprintf(tmp_path, sizeof(tmp_path), | |
958 | "%s/%s-%s/", consumer->subdir, session_name, datetime); | |
959 | } | |
173af62f | 960 | if (ret < 0) { |
2f77fc4b | 961 | PERROR("snprintf session name date"); |
173af62f DG |
962 | goto error; |
963 | } | |
964 | ||
2f77fc4b DG |
965 | strncpy(consumer->subdir, tmp_path, sizeof(consumer->subdir)); |
966 | DBG2("Consumer subdir set to %s", consumer->subdir); | |
173af62f DG |
967 | |
968 | error: | |
969 | return ret; | |
970 | } | |
806e2684 DG |
971 | |
972 | /* | |
6d805429 | 973 | * Ask the consumer if the data is ready to read (NOT pending) for the specific |
806e2684 DG |
974 | * session id. |
975 | * | |
976 | * This function has a different behavior with the consumer i.e. that it waits | |
6d805429 | 977 | * for a reply from the consumer if yes or no the data is pending. |
806e2684 | 978 | */ |
d88aee68 | 979 | int consumer_is_data_pending(uint64_t session_id, |
806e2684 DG |
980 | struct consumer_output *consumer) |
981 | { | |
982 | int ret; | |
6d805429 | 983 | int32_t ret_code = 0; /* Default is that the data is NOT pending */ |
806e2684 DG |
984 | struct consumer_socket *socket; |
985 | struct lttng_ht_iter iter; | |
986 | struct lttcomm_consumer_msg msg; | |
987 | ||
988 | assert(consumer); | |
989 | ||
6d805429 | 990 | msg.cmd_type = LTTNG_CONSUMER_DATA_PENDING; |
806e2684 | 991 | |
d88aee68 | 992 | msg.u.data_pending.session_id = session_id; |
806e2684 | 993 | |
d88aee68 | 994 | DBG3("Consumer data pending for id %" PRIu64, session_id); |
806e2684 | 995 | |
c8f59ee5 | 996 | /* Send command for each consumer */ |
b82c5c4d | 997 | rcu_read_lock(); |
806e2684 DG |
998 | cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket, |
999 | node.node) { | |
1000 | /* Code flow error */ | |
1001 | assert(socket->fd >= 0); | |
1002 | ||
1003 | pthread_mutex_lock(socket->lock); | |
1004 | ||
1005 | ret = lttcomm_send_unix_sock(socket->fd, &msg, sizeof(msg)); | |
1006 | if (ret < 0) { | |
3448e266 DG |
1007 | /* The above call will print a PERROR on error. */ |
1008 | DBG("Error on consumer is data pending on sock %d", socket->fd); | |
806e2684 | 1009 | pthread_mutex_unlock(socket->lock); |
b82c5c4d | 1010 | goto error_unlock; |
806e2684 DG |
1011 | } |
1012 | ||
f50f23d9 DG |
1013 | /* |
1014 | * No need for a recv reply status because the answer to the command is | |
1015 | * the reply status message. | |
1016 | */ | |
1017 | ||
806e2684 | 1018 | ret = lttcomm_recv_unix_sock(socket->fd, &ret_code, sizeof(ret_code)); |
a6cd2b97 DG |
1019 | if (ret <= 0) { |
1020 | if (ret == 0) { | |
1021 | /* Orderly shutdown. Don't return 0 which means success. */ | |
1022 | ret = -1; | |
1023 | } | |
3448e266 DG |
1024 | /* The above call will print a PERROR on error. */ |
1025 | DBG("Error on recv consumer is data pending on sock %d", socket->fd); | |
806e2684 | 1026 | pthread_mutex_unlock(socket->lock); |
b82c5c4d | 1027 | goto error_unlock; |
806e2684 DG |
1028 | } |
1029 | ||
1030 | pthread_mutex_unlock(socket->lock); | |
1031 | ||
6d805429 | 1032 | if (ret_code == 1) { |
806e2684 DG |
1033 | break; |
1034 | } | |
1035 | } | |
b82c5c4d | 1036 | rcu_read_unlock(); |
806e2684 | 1037 | |
d88aee68 DG |
1038 | DBG("Consumer data is %s pending for session id %" PRIu64, |
1039 | ret_code == 1 ? "" : "NOT", session_id); | |
806e2684 DG |
1040 | return ret_code; |
1041 | ||
b82c5c4d DG |
1042 | error_unlock: |
1043 | rcu_read_unlock(); | |
806e2684 DG |
1044 | return -1; |
1045 | } | |
7972aab2 DG |
1046 | |
1047 | /* | |
1048 | * Send a flush command to consumer using the given channel key. | |
1049 | * | |
1050 | * Return 0 on success else a negative value. | |
1051 | */ | |
1052 | int consumer_flush_channel(struct consumer_socket *socket, uint64_t key) | |
1053 | { | |
1054 | int ret; | |
1055 | struct lttcomm_consumer_msg msg; | |
1056 | ||
1057 | assert(socket); | |
1058 | assert(socket->fd >= 0); | |
1059 | ||
1060 | DBG2("Consumer flush channel key %" PRIu64, key); | |
1061 | ||
1062 | msg.cmd_type = LTTNG_CONSUMER_FLUSH_CHANNEL; | |
1063 | msg.u.flush_channel.key = key; | |
1064 | ||
1065 | pthread_mutex_lock(socket->lock); | |
1066 | health_code_update(); | |
1067 | ||
1068 | ret = consumer_send_msg(socket, &msg); | |
1069 | if (ret < 0) { | |
1070 | goto end; | |
1071 | } | |
1072 | ||
1073 | end: | |
1074 | health_code_update(); | |
1075 | pthread_mutex_unlock(socket->lock); | |
1076 | return ret; | |
1077 | } | |
1078 | ||
1079 | /* | |
1080 | * Send a close metdata command to consumer using the given channel key. | |
1081 | * | |
1082 | * Return 0 on success else a negative value. | |
1083 | */ | |
1084 | int consumer_close_metadata(struct consumer_socket *socket, | |
1085 | uint64_t metadata_key) | |
1086 | { | |
1087 | int ret; | |
1088 | struct lttcomm_consumer_msg msg; | |
1089 | ||
1090 | assert(socket); | |
1091 | assert(socket->fd >= 0); | |
1092 | ||
1093 | DBG2("Consumer close metadata channel key %" PRIu64, metadata_key); | |
1094 | ||
1095 | msg.cmd_type = LTTNG_CONSUMER_CLOSE_METADATA; | |
1096 | msg.u.close_metadata.key = metadata_key; | |
1097 | ||
1098 | pthread_mutex_lock(socket->lock); | |
1099 | health_code_update(); | |
1100 | ||
1101 | ret = consumer_send_msg(socket, &msg); | |
1102 | if (ret < 0) { | |
1103 | goto end; | |
1104 | } | |
1105 | ||
1106 | end: | |
1107 | health_code_update(); | |
1108 | pthread_mutex_unlock(socket->lock); | |
1109 | return ret; | |
1110 | } | |
1111 | ||
1112 | /* | |
1113 | * Send a setup metdata command to consumer using the given channel key. | |
1114 | * | |
1115 | * Return 0 on success else a negative value. | |
1116 | */ | |
1117 | int consumer_setup_metadata(struct consumer_socket *socket, | |
1118 | uint64_t metadata_key) | |
1119 | { | |
1120 | int ret; | |
1121 | struct lttcomm_consumer_msg msg; | |
1122 | ||
1123 | assert(socket); | |
1124 | assert(socket->fd >= 0); | |
1125 | ||
1126 | DBG2("Consumer setup metadata channel key %" PRIu64, metadata_key); | |
1127 | ||
1128 | msg.cmd_type = LTTNG_CONSUMER_SETUP_METADATA; | |
1129 | msg.u.setup_metadata.key = metadata_key; | |
1130 | ||
1131 | pthread_mutex_lock(socket->lock); | |
1132 | health_code_update(); | |
1133 | ||
1134 | ret = consumer_send_msg(socket, &msg); | |
1135 | if (ret < 0) { | |
1136 | goto end; | |
1137 | } | |
1138 | ||
1139 | end: | |
1140 | health_code_update(); | |
1141 | pthread_mutex_unlock(socket->lock); | |
1142 | return ret; | |
1143 | } | |
1144 | ||
1145 | /* | |
331744e3 | 1146 | * Send metadata string to consumer. Socket lock MUST be acquired. |
7972aab2 DG |
1147 | * |
1148 | * Return 0 on success else a negative value. | |
1149 | */ | |
1150 | int consumer_push_metadata(struct consumer_socket *socket, | |
1151 | uint64_t metadata_key, char *metadata_str, size_t len, | |
1152 | size_t target_offset) | |
1153 | { | |
1154 | int ret; | |
1155 | struct lttcomm_consumer_msg msg; | |
1156 | ||
1157 | assert(socket); | |
1158 | assert(socket->fd >= 0); | |
1159 | ||
1160 | DBG2("Consumer push metadata to consumer socket %d", socket->fd); | |
1161 | ||
1162 | msg.cmd_type = LTTNG_CONSUMER_PUSH_METADATA; | |
1163 | msg.u.push_metadata.key = metadata_key; | |
1164 | msg.u.push_metadata.target_offset = target_offset; | |
1165 | msg.u.push_metadata.len = len; | |
1166 | ||
7972aab2 DG |
1167 | health_code_update(); |
1168 | ret = consumer_send_msg(socket, &msg); | |
331744e3 | 1169 | if (ret < 0 || len == 0) { |
7972aab2 DG |
1170 | goto end; |
1171 | } | |
1172 | ||
8fd623e0 | 1173 | DBG3("Consumer pushing metadata on sock %d of len %zu", socket->fd, len); |
7972aab2 DG |
1174 | |
1175 | ret = lttcomm_send_unix_sock(socket->fd, metadata_str, len); | |
1176 | if (ret < 0) { | |
1177 | goto end; | |
1178 | } | |
1179 | ||
1180 | health_code_update(); | |
1181 | ret = consumer_recv_status_reply(socket); | |
1182 | if (ret < 0) { | |
1183 | goto end; | |
1184 | } | |
1185 | ||
1186 | end: | |
1187 | health_code_update(); | |
7972aab2 DG |
1188 | return ret; |
1189 | } | |
6dc3064a DG |
1190 | |
1191 | /* | |
1192 | * Ask the consumer to snapshot a specific channel using the key. | |
1193 | * | |
1194 | * Return 0 on success or else a negative error. | |
1195 | */ | |
1196 | int consumer_snapshot_channel(struct consumer_socket *socket, uint64_t key, | |
1197 | struct snapshot_output *output, int metadata, uid_t uid, gid_t gid, | |
ee91bab2 | 1198 | const char *session_path, int wait) |
6dc3064a DG |
1199 | { |
1200 | int ret; | |
ee91bab2 | 1201 | char datetime[16]; |
6dc3064a DG |
1202 | struct lttcomm_consumer_msg msg; |
1203 | ||
1204 | assert(socket); | |
1205 | assert(socket->fd >= 0); | |
1206 | assert(output); | |
1207 | assert(output->consumer); | |
1208 | ||
1209 | DBG("Consumer snapshot channel key %" PRIu64, key); | |
1210 | ||
ee91bab2 DG |
1211 | ret = utils_get_current_time_str("%Y%m%d-%H%M%S", datetime, |
1212 | sizeof(datetime)); | |
1213 | if (!ret) { | |
1214 | ret = -EINVAL; | |
1215 | goto error; | |
1216 | } | |
6dc3064a | 1217 | |
ee91bab2 | 1218 | memset(&msg, 0, sizeof(msg)); |
6dc3064a DG |
1219 | msg.cmd_type = LTTNG_CONSUMER_SNAPSHOT_CHANNEL; |
1220 | msg.u.snapshot_channel.key = key; | |
1221 | msg.u.snapshot_channel.max_size = output->max_size; | |
1222 | msg.u.snapshot_channel.metadata = metadata; | |
1223 | ||
1224 | if (output->consumer->type == CONSUMER_DST_NET) { | |
1225 | msg.u.snapshot_channel.relayd_id = output->consumer->net_seq_index; | |
1226 | msg.u.snapshot_channel.use_relayd = 1; | |
1227 | ret = snprintf(msg.u.snapshot_channel.pathname, | |
ee91bab2 DG |
1228 | sizeof(msg.u.snapshot_channel.pathname), "%s/%s-%s%s", |
1229 | output->consumer->subdir, output->name, datetime, | |
1230 | session_path); | |
6dc3064a DG |
1231 | if (ret < 0) { |
1232 | ret = -LTTNG_ERR_NOMEM; | |
1233 | goto error; | |
1234 | } | |
1235 | } else { | |
1236 | ret = snprintf(msg.u.snapshot_channel.pathname, | |
ee91bab2 DG |
1237 | sizeof(msg.u.snapshot_channel.pathname), "%s/%s-%s%s", |
1238 | output->consumer->dst.trace_path, output->name, datetime, | |
1239 | session_path); | |
6dc3064a DG |
1240 | if (ret < 0) { |
1241 | ret = -LTTNG_ERR_NOMEM; | |
1242 | goto error; | |
1243 | } | |
07b86b52 | 1244 | msg.u.snapshot_channel.relayd_id = (uint64_t) -1ULL; |
6dc3064a DG |
1245 | |
1246 | /* Create directory. Ignore if exist. */ | |
1247 | ret = run_as_mkdir_recursive(msg.u.snapshot_channel.pathname, | |
1248 | S_IRWXU | S_IRWXG, uid, gid); | |
1249 | if (ret < 0) { | |
1250 | if (ret != -EEXIST) { | |
1251 | ERR("Trace directory creation error"); | |
1252 | goto error; | |
1253 | } | |
1254 | } | |
1255 | } | |
1256 | ||
1257 | health_code_update(); | |
1258 | ret = consumer_send_msg(socket, &msg); | |
1259 | if (ret < 0) { | |
1260 | goto error; | |
1261 | } | |
1262 | ||
1263 | error: | |
1264 | health_code_update(); | |
1265 | return ret; | |
1266 | } |