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> | |
26 | ||
27 | #include <common/common.h> | |
28 | #include <common/defaults.h> | |
29 | #include <common/uri.h> | |
30 | ||
31 | #include "consumer.h" | |
32 | ||
2f77fc4b DG |
33 | /* |
34 | * Send destroy relayd command to consumer. | |
35 | * | |
36 | * On success return positive value. On error, negative value. | |
37 | */ | |
38 | int consumer_send_destroy_relayd(struct consumer_socket *sock, | |
39 | struct consumer_output *consumer) | |
40 | { | |
41 | int ret; | |
42 | struct lttcomm_consumer_msg msg; | |
43 | ||
44 | assert(consumer); | |
45 | assert(sock); | |
46 | ||
47 | DBG2("Sending destroy relayd command to consumer..."); | |
48 | ||
49 | /* Bail out if consumer is disabled */ | |
50 | if (!consumer->enabled) { | |
f73fabfd | 51 | ret = LTTNG_OK; |
2f77fc4b DG |
52 | DBG3("Consumer is disabled"); |
53 | goto error; | |
54 | } | |
55 | ||
56 | msg.cmd_type = LTTNG_CONSUMER_DESTROY_RELAYD; | |
57 | msg.u.destroy_relayd.net_seq_idx = consumer->net_seq_index; | |
58 | ||
59 | pthread_mutex_lock(sock->lock); | |
60 | ret = lttcomm_send_unix_sock(sock->fd, &msg, sizeof(msg)); | |
61 | pthread_mutex_unlock(sock->lock); | |
62 | if (ret < 0) { | |
63 | PERROR("send consumer destroy relayd command"); | |
64 | goto error; | |
65 | } | |
66 | ||
67 | DBG2("Consumer send destroy relayd command done"); | |
68 | ||
69 | error: | |
70 | return ret; | |
71 | } | |
72 | ||
73 | /* | |
74 | * For each consumer socket in the consumer output object, send a destroy | |
75 | * relayd command. | |
76 | */ | |
77 | void consumer_output_send_destroy_relayd(struct consumer_output *consumer) | |
78 | { | |
79 | int ret; | |
80 | struct lttng_ht_iter iter; | |
81 | struct consumer_socket *socket; | |
82 | ||
83 | assert(consumer); | |
84 | ||
85 | /* Destroy any relayd connection */ | |
86 | if (consumer && consumer->type == CONSUMER_DST_NET) { | |
87 | rcu_read_lock(); | |
88 | cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket, | |
89 | node.node) { | |
90 | /* Send destroy relayd command */ | |
91 | ret = consumer_send_destroy_relayd(socket, consumer); | |
92 | if (ret < 0) { | |
93 | ERR("Unable to send destroy relayd command to consumer"); | |
94 | /* Continue since we MUST delete everything at this point. */ | |
95 | } | |
96 | } | |
97 | rcu_read_unlock(); | |
98 | } | |
99 | } | |
100 | ||
a4b92340 DG |
101 | /* |
102 | * From a consumer_data structure, allocate and add a consumer socket to the | |
103 | * consumer output. | |
104 | * | |
105 | * Return 0 on success, else negative value on error | |
106 | */ | |
107 | int consumer_create_socket(struct consumer_data *data, | |
108 | struct consumer_output *output) | |
109 | { | |
110 | int ret = 0; | |
111 | struct consumer_socket *socket; | |
112 | ||
113 | assert(data); | |
114 | ||
115 | if (output == NULL || data->cmd_sock < 0) { | |
116 | /* | |
117 | * Not an error. Possible there is simply not spawned consumer or it's | |
118 | * disabled for the tracing session asking the socket. | |
119 | */ | |
120 | goto error; | |
121 | } | |
122 | ||
123 | rcu_read_lock(); | |
124 | socket = consumer_find_socket(data->cmd_sock, output); | |
125 | rcu_read_unlock(); | |
126 | if (socket == NULL) { | |
127 | socket = consumer_allocate_socket(data->cmd_sock); | |
128 | if (socket == NULL) { | |
129 | ret = -1; | |
130 | goto error; | |
131 | } | |
132 | ||
2f77fc4b | 133 | socket->registered = 0; |
a4b92340 DG |
134 | socket->lock = &data->lock; |
135 | rcu_read_lock(); | |
136 | consumer_add_socket(socket, output); | |
137 | rcu_read_unlock(); | |
138 | } | |
139 | ||
140 | DBG3("Consumer socket created (fd: %d) and added to output", | |
141 | data->cmd_sock); | |
142 | ||
143 | error: | |
144 | return ret; | |
145 | } | |
146 | ||
173af62f DG |
147 | /* |
148 | * Find a consumer_socket in a consumer_output hashtable. Read side lock must | |
149 | * be acquired before calling this function and across use of the | |
150 | * returned consumer_socket. | |
151 | */ | |
152 | struct consumer_socket *consumer_find_socket(int key, | |
153 | struct consumer_output *consumer) | |
154 | { | |
155 | struct lttng_ht_iter iter; | |
156 | struct lttng_ht_node_ulong *node; | |
157 | struct consumer_socket *socket = NULL; | |
158 | ||
159 | /* Negative keys are lookup failures */ | |
a4b92340 | 160 | if (key < 0 || consumer == NULL) { |
173af62f DG |
161 | return NULL; |
162 | } | |
163 | ||
164 | lttng_ht_lookup(consumer->socks, (void *)((unsigned long) key), | |
165 | &iter); | |
166 | node = lttng_ht_iter_get_node_ulong(&iter); | |
167 | if (node != NULL) { | |
168 | socket = caa_container_of(node, struct consumer_socket, node); | |
169 | } | |
170 | ||
171 | return socket; | |
172 | } | |
173 | ||
174 | /* | |
175 | * Allocate a new consumer_socket and return the pointer. | |
176 | */ | |
177 | struct consumer_socket *consumer_allocate_socket(int fd) | |
178 | { | |
179 | struct consumer_socket *socket = NULL; | |
180 | ||
181 | socket = zmalloc(sizeof(struct consumer_socket)); | |
182 | if (socket == NULL) { | |
183 | PERROR("zmalloc consumer socket"); | |
184 | goto error; | |
185 | } | |
186 | ||
187 | socket->fd = fd; | |
188 | lttng_ht_node_init_ulong(&socket->node, fd); | |
189 | ||
190 | error: | |
191 | return socket; | |
192 | } | |
193 | ||
194 | /* | |
195 | * Add consumer socket to consumer output object. Read side lock must be | |
196 | * acquired before calling this function. | |
197 | */ | |
198 | void consumer_add_socket(struct consumer_socket *sock, | |
199 | struct consumer_output *consumer) | |
200 | { | |
201 | assert(sock); | |
202 | assert(consumer); | |
203 | ||
204 | lttng_ht_add_unique_ulong(consumer->socks, &sock->node); | |
205 | } | |
206 | ||
207 | /* | |
208 | * Delte consumer socket to consumer output object. Read side lock must be | |
209 | * acquired before calling this function. | |
210 | */ | |
211 | void consumer_del_socket(struct consumer_socket *sock, | |
212 | struct consumer_output *consumer) | |
213 | { | |
214 | int ret; | |
215 | struct lttng_ht_iter iter; | |
216 | ||
217 | assert(sock); | |
218 | assert(consumer); | |
219 | ||
220 | iter.iter.node = &sock->node.node; | |
221 | ret = lttng_ht_del(consumer->socks, &iter); | |
222 | assert(!ret); | |
223 | } | |
224 | ||
225 | /* | |
226 | * RCU destroy call function. | |
227 | */ | |
228 | static void destroy_socket_rcu(struct rcu_head *head) | |
229 | { | |
230 | struct lttng_ht_node_ulong *node = | |
231 | caa_container_of(head, struct lttng_ht_node_ulong, head); | |
232 | struct consumer_socket *socket = | |
233 | caa_container_of(node, struct consumer_socket, node); | |
234 | ||
235 | free(socket); | |
236 | } | |
237 | ||
238 | /* | |
239 | * Destroy and free socket pointer in a call RCU. Read side lock must be | |
240 | * acquired before calling this function. | |
241 | */ | |
242 | void consumer_destroy_socket(struct consumer_socket *sock) | |
243 | { | |
244 | assert(sock); | |
245 | ||
246 | /* | |
247 | * We DO NOT close the file descriptor here since it is global to the | |
2f77fc4b DG |
248 | * session daemon and is closed only if the consumer dies or a custom |
249 | * consumer was registered, | |
173af62f | 250 | */ |
2f77fc4b DG |
251 | if (sock->registered) { |
252 | DBG3("Consumer socket was registered. Closing fd %d", sock->fd); | |
253 | lttcomm_close_unix_sock(sock->fd); | |
254 | } | |
173af62f DG |
255 | |
256 | call_rcu(&sock->node.head, destroy_socket_rcu); | |
257 | } | |
258 | ||
00e2e675 DG |
259 | /* |
260 | * Allocate and assign data to a consumer_output object. | |
261 | * | |
262 | * Return pointer to structure. | |
263 | */ | |
264 | struct consumer_output *consumer_create_output(enum consumer_dst_type type) | |
265 | { | |
266 | struct consumer_output *output = NULL; | |
267 | ||
268 | output = zmalloc(sizeof(struct consumer_output)); | |
269 | if (output == NULL) { | |
270 | PERROR("zmalloc consumer_output"); | |
271 | goto error; | |
272 | } | |
273 | ||
274 | /* By default, consumer output is enabled */ | |
275 | output->enabled = 1; | |
276 | output->type = type; | |
277 | output->net_seq_index = -1; | |
173af62f DG |
278 | |
279 | output->socks = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG); | |
00e2e675 DG |
280 | |
281 | error: | |
282 | return output; | |
283 | } | |
284 | ||
285 | /* | |
286 | * Delete the consumer_output object from the list and free the ptr. | |
287 | */ | |
288 | void consumer_destroy_output(struct consumer_output *obj) | |
289 | { | |
290 | if (obj == NULL) { | |
291 | return; | |
292 | } | |
293 | ||
173af62f DG |
294 | if (obj->socks) { |
295 | struct lttng_ht_iter iter; | |
296 | struct consumer_socket *socket; | |
297 | ||
2f77fc4b | 298 | rcu_read_lock(); |
173af62f | 299 | cds_lfht_for_each_entry(obj->socks->ht, &iter.iter, socket, node.node) { |
2f77fc4b | 300 | consumer_del_socket(socket, obj); |
173af62f DG |
301 | consumer_destroy_socket(socket); |
302 | } | |
2f77fc4b DG |
303 | rcu_read_unlock(); |
304 | ||
305 | /* Finally destroy HT */ | |
306 | lttng_ht_destroy(obj->socks); | |
00e2e675 | 307 | } |
173af62f | 308 | |
00e2e675 DG |
309 | free(obj); |
310 | } | |
311 | ||
312 | /* | |
313 | * Copy consumer output and returned the newly allocated copy. | |
314 | */ | |
315 | struct consumer_output *consumer_copy_output(struct consumer_output *obj) | |
316 | { | |
09a90bcd | 317 | struct lttng_ht *tmp_ht_ptr; |
173af62f DG |
318 | struct lttng_ht_iter iter; |
319 | struct consumer_socket *socket, *copy_sock; | |
00e2e675 DG |
320 | struct consumer_output *output; |
321 | ||
322 | assert(obj); | |
323 | ||
324 | output = consumer_create_output(obj->type); | |
325 | if (output == NULL) { | |
326 | goto error; | |
327 | } | |
09a90bcd DG |
328 | /* Avoid losing the HT reference after the memcpy() */ |
329 | tmp_ht_ptr = output->socks; | |
00e2e675 DG |
330 | |
331 | memcpy(output, obj, sizeof(struct consumer_output)); | |
332 | ||
09a90bcd DG |
333 | /* Putting back the HT pointer and start copying socket(s). */ |
334 | output->socks = tmp_ht_ptr; | |
173af62f DG |
335 | |
336 | cds_lfht_for_each_entry(obj->socks->ht, &iter.iter, socket, node.node) { | |
337 | /* Create new socket object. */ | |
338 | copy_sock = consumer_allocate_socket(socket->fd); | |
339 | if (copy_sock == NULL) { | |
340 | goto malloc_error; | |
341 | } | |
342 | ||
09a90bcd | 343 | copy_sock->registered = socket->registered; |
173af62f DG |
344 | copy_sock->lock = socket->lock; |
345 | consumer_add_socket(copy_sock, output); | |
346 | } | |
347 | ||
00e2e675 DG |
348 | error: |
349 | return output; | |
173af62f DG |
350 | |
351 | malloc_error: | |
352 | consumer_destroy_output(output); | |
353 | return NULL; | |
00e2e675 DG |
354 | } |
355 | ||
356 | /* | |
357 | * Set network URI to the consumer output object. | |
358 | * | |
ad20f474 DG |
359 | * Return 0 on success. Return 1 if the URI were equal. Else, negative value on |
360 | * error. | |
00e2e675 DG |
361 | */ |
362 | int consumer_set_network_uri(struct consumer_output *obj, | |
363 | struct lttng_uri *uri) | |
364 | { | |
365 | int ret; | |
366 | char tmp_path[PATH_MAX]; | |
367 | char hostname[HOST_NAME_MAX]; | |
368 | struct lttng_uri *dst_uri = NULL; | |
369 | ||
370 | /* Code flow error safety net. */ | |
371 | assert(obj); | |
372 | assert(uri); | |
373 | ||
374 | switch (uri->stype) { | |
375 | case LTTNG_STREAM_CONTROL: | |
376 | dst_uri = &obj->dst.net.control; | |
377 | obj->dst.net.control_isset = 1; | |
378 | if (uri->port == 0) { | |
379 | /* Assign default port. */ | |
380 | uri->port = DEFAULT_NETWORK_CONTROL_PORT; | |
381 | } | |
ad20f474 | 382 | DBG3("Consumer control URI set with port %d", uri->port); |
00e2e675 DG |
383 | break; |
384 | case LTTNG_STREAM_DATA: | |
385 | dst_uri = &obj->dst.net.data; | |
386 | obj->dst.net.data_isset = 1; | |
387 | if (uri->port == 0) { | |
388 | /* Assign default port. */ | |
389 | uri->port = DEFAULT_NETWORK_DATA_PORT; | |
390 | } | |
ad20f474 | 391 | DBG3("Consumer data URI set with port %d", uri->port); |
00e2e675 DG |
392 | break; |
393 | default: | |
394 | ERR("Set network uri type unknown %d", uri->stype); | |
395 | goto error; | |
396 | } | |
397 | ||
398 | ret = uri_compare(dst_uri, uri); | |
399 | if (!ret) { | |
400 | /* Same URI, don't touch it and return success. */ | |
401 | DBG3("URI network compare are the same"); | |
ad20f474 | 402 | goto equal; |
00e2e675 DG |
403 | } |
404 | ||
405 | /* URIs were not equal, replacing it. */ | |
406 | memset(dst_uri, 0, sizeof(struct lttng_uri)); | |
407 | memcpy(dst_uri, uri, sizeof(struct lttng_uri)); | |
408 | obj->type = CONSUMER_DST_NET; | |
409 | ||
410 | /* Handle subdir and add hostname in front. */ | |
411 | if (dst_uri->stype == LTTNG_STREAM_CONTROL) { | |
412 | /* Get hostname to append it in the pathname */ | |
413 | ret = gethostname(hostname, sizeof(hostname)); | |
414 | if (ret < 0) { | |
415 | PERROR("gethostname. Fallback on default localhost"); | |
416 | strncpy(hostname, "localhost", sizeof(hostname)); | |
417 | } | |
418 | hostname[sizeof(hostname) - 1] = '\0'; | |
419 | ||
420 | /* Setup consumer subdir if none present in the control URI */ | |
421 | if (strlen(dst_uri->subdir) == 0) { | |
422 | ret = snprintf(tmp_path, sizeof(tmp_path), "%s/%s", | |
423 | hostname, obj->subdir); | |
424 | } else { | |
425 | ret = snprintf(tmp_path, sizeof(tmp_path), "%s/%s", | |
426 | hostname, dst_uri->subdir); | |
427 | } | |
428 | if (ret < 0) { | |
429 | PERROR("snprintf set consumer uri subdir"); | |
430 | goto error; | |
431 | } | |
432 | ||
433 | strncpy(obj->subdir, tmp_path, sizeof(obj->subdir)); | |
434 | DBG3("Consumer set network uri subdir path %s", tmp_path); | |
435 | } | |
436 | ||
00e2e675 | 437 | return 0; |
ad20f474 DG |
438 | equal: |
439 | return 1; | |
00e2e675 DG |
440 | error: |
441 | return -1; | |
442 | } | |
443 | ||
444 | /* | |
445 | * Send file descriptor to consumer via sock. | |
446 | */ | |
447 | int consumer_send_fds(int sock, int *fds, size_t nb_fd) | |
448 | { | |
449 | int ret; | |
450 | ||
451 | assert(fds); | |
452 | assert(nb_fd > 0); | |
453 | ||
454 | ret = lttcomm_send_fds_unix_sock(sock, fds, nb_fd); | |
455 | if (ret < 0) { | |
456 | PERROR("send consumer fds"); | |
457 | goto error; | |
458 | } | |
459 | ||
460 | error: | |
461 | return ret; | |
462 | } | |
463 | ||
464 | /* | |
465 | * Consumer send channel communication message structure to consumer. | |
466 | */ | |
467 | int consumer_send_channel(int sock, struct lttcomm_consumer_msg *msg) | |
468 | { | |
469 | int ret; | |
470 | ||
471 | assert(msg); | |
472 | assert(sock >= 0); | |
473 | ||
474 | ret = lttcomm_send_unix_sock(sock, msg, | |
475 | sizeof(struct lttcomm_consumer_msg)); | |
476 | if (ret < 0) { | |
477 | PERROR("send consumer channel"); | |
478 | goto error; | |
479 | } | |
480 | ||
481 | error: | |
482 | return ret; | |
483 | } | |
484 | ||
485 | /* | |
486 | * Init channel communication message structure. | |
487 | */ | |
488 | void consumer_init_channel_comm_msg(struct lttcomm_consumer_msg *msg, | |
489 | enum lttng_consumer_command cmd, | |
490 | int channel_key, | |
491 | uint64_t max_sb_size, | |
492 | uint64_t mmap_len, | |
c30aaa51 MD |
493 | const char *name, |
494 | unsigned int nb_init_streams) | |
00e2e675 DG |
495 | { |
496 | assert(msg); | |
497 | ||
498 | /* TODO: Args validation */ | |
499 | ||
500 | /* Zeroed structure */ | |
501 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
502 | ||
503 | /* Send channel */ | |
504 | msg->cmd_type = cmd; | |
505 | msg->u.channel.channel_key = channel_key; | |
506 | msg->u.channel.max_sb_size = max_sb_size; | |
507 | msg->u.channel.mmap_len = mmap_len; | |
c30aaa51 | 508 | msg->u.channel.nb_init_streams = nb_init_streams; |
00e2e675 DG |
509 | } |
510 | ||
511 | /* | |
512 | * Init stream communication message structure. | |
513 | */ | |
514 | void consumer_init_stream_comm_msg(struct lttcomm_consumer_msg *msg, | |
515 | enum lttng_consumer_command cmd, | |
516 | int channel_key, | |
517 | int stream_key, | |
518 | uint32_t state, | |
519 | enum lttng_event_output output, | |
520 | uint64_t mmap_len, | |
521 | uid_t uid, | |
522 | gid_t gid, | |
523 | int net_index, | |
524 | unsigned int metadata_flag, | |
525 | const char *name, | |
ca22feea DG |
526 | const char *pathname, |
527 | unsigned int session_id) | |
00e2e675 DG |
528 | { |
529 | assert(msg); | |
530 | ||
531 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
532 | ||
533 | /* TODO: Args validation */ | |
534 | ||
535 | msg->cmd_type = cmd; | |
536 | msg->u.stream.channel_key = channel_key; | |
537 | msg->u.stream.stream_key = stream_key; | |
538 | msg->u.stream.state = state; | |
539 | msg->u.stream.output = output; | |
540 | msg->u.stream.mmap_len = mmap_len; | |
541 | msg->u.stream.uid = uid; | |
542 | msg->u.stream.gid = gid; | |
543 | msg->u.stream.net_index = net_index; | |
544 | msg->u.stream.metadata_flag = metadata_flag; | |
ca22feea | 545 | msg->u.stream.session_id = (uint64_t) session_id; |
00e2e675 DG |
546 | strncpy(msg->u.stream.name, name, sizeof(msg->u.stream.name)); |
547 | msg->u.stream.name[sizeof(msg->u.stream.name) - 1] = '\0'; | |
548 | strncpy(msg->u.stream.path_name, pathname, | |
549 | sizeof(msg->u.stream.path_name)); | |
550 | msg->u.stream.path_name[sizeof(msg->u.stream.path_name) - 1] = '\0'; | |
551 | } | |
552 | ||
553 | /* | |
554 | * Send stream communication structure to the consumer. | |
555 | */ | |
556 | int consumer_send_stream(int sock, struct consumer_output *dst, | |
557 | struct lttcomm_consumer_msg *msg, int *fds, size_t nb_fd) | |
558 | { | |
559 | int ret; | |
560 | ||
561 | assert(msg); | |
562 | assert(dst); | |
563 | ||
564 | switch (dst->type) { | |
565 | case CONSUMER_DST_NET: | |
566 | /* Consumer should send the stream on the network. */ | |
567 | msg->u.stream.net_index = dst->net_seq_index; | |
568 | break; | |
569 | case CONSUMER_DST_LOCAL: | |
570 | /* Add stream file name to stream path */ | |
c30ce0b3 CB |
571 | strncat(msg->u.stream.path_name, "/", |
572 | sizeof(msg->u.stream.path_name) - | |
573 | strlen(msg->u.stream.path_name) - 1); | |
00e2e675 | 574 | strncat(msg->u.stream.path_name, msg->u.stream.name, |
c30ce0b3 CB |
575 | sizeof(msg->u.stream.path_name) - |
576 | strlen(msg->u.stream.path_name) - 1); | |
00e2e675 DG |
577 | msg->u.stream.path_name[sizeof(msg->u.stream.path_name) - 1] = '\0'; |
578 | /* Indicate that the stream is NOT network */ | |
579 | msg->u.stream.net_index = -1; | |
580 | break; | |
581 | default: | |
582 | ERR("Consumer unknown output type (%d)", dst->type); | |
583 | ret = -1; | |
584 | goto error; | |
585 | } | |
586 | ||
587 | /* Send on socket */ | |
588 | ret = lttcomm_send_unix_sock(sock, msg, | |
589 | sizeof(struct lttcomm_consumer_msg)); | |
590 | if (ret < 0) { | |
591 | PERROR("send consumer stream"); | |
592 | goto error; | |
593 | } | |
594 | ||
595 | ret = consumer_send_fds(sock, fds, nb_fd); | |
596 | if (ret < 0) { | |
597 | goto error; | |
598 | } | |
599 | ||
600 | error: | |
601 | return ret; | |
602 | } | |
37278a1e DG |
603 | |
604 | /* | |
605 | * Send relayd socket to consumer associated with a session name. | |
606 | * | |
607 | * On success return positive value. On error, negative value. | |
608 | */ | |
609 | int consumer_send_relayd_socket(int consumer_sock, | |
610 | struct lttcomm_sock *sock, struct consumer_output *consumer, | |
611 | enum lttng_stream_type type) | |
612 | { | |
613 | int ret; | |
614 | struct lttcomm_consumer_msg msg; | |
615 | ||
616 | /* Code flow error. Safety net. */ | |
617 | assert(sock); | |
618 | assert(consumer); | |
619 | ||
620 | /* Bail out if consumer is disabled */ | |
621 | if (!consumer->enabled) { | |
f73fabfd | 622 | ret = LTTNG_OK; |
37278a1e DG |
623 | goto error; |
624 | } | |
625 | ||
626 | msg.cmd_type = LTTNG_CONSUMER_ADD_RELAYD_SOCKET; | |
627 | /* | |
628 | * Assign network consumer output index using the temporary consumer since | |
629 | * this call should only be made from within a set_consumer_uri() function | |
630 | * call in the session daemon. | |
631 | */ | |
632 | msg.u.relayd_sock.net_index = consumer->net_seq_index; | |
633 | msg.u.relayd_sock.type = type; | |
634 | memcpy(&msg.u.relayd_sock.sock, sock, sizeof(msg.u.relayd_sock.sock)); | |
635 | ||
173af62f | 636 | DBG3("Sending relayd sock info to consumer on %d", consumer_sock); |
37278a1e DG |
637 | ret = lttcomm_send_unix_sock(consumer_sock, &msg, sizeof(msg)); |
638 | if (ret < 0) { | |
639 | PERROR("send consumer relayd socket info"); | |
640 | goto error; | |
641 | } | |
642 | ||
643 | DBG3("Sending relayd socket file descriptor to consumer"); | |
644 | ret = consumer_send_fds(consumer_sock, &sock->fd, 1); | |
645 | if (ret < 0) { | |
646 | goto error; | |
647 | } | |
648 | ||
649 | DBG2("Consumer relayd socket sent"); | |
650 | ||
651 | error: | |
652 | return ret; | |
653 | } | |
173af62f DG |
654 | |
655 | /* | |
2f77fc4b DG |
656 | * Set consumer subdirectory using the session name and a generated datetime if |
657 | * needed. This is appended to the current subdirectory. | |
173af62f | 658 | */ |
2f77fc4b DG |
659 | int consumer_set_subdir(struct consumer_output *consumer, |
660 | const char *session_name) | |
173af62f | 661 | { |
2f77fc4b DG |
662 | int ret = 0; |
663 | unsigned int have_default_name = 0; | |
664 | char datetime[16], tmp_path[PATH_MAX]; | |
665 | time_t rawtime; | |
666 | struct tm *timeinfo; | |
173af62f DG |
667 | |
668 | assert(consumer); | |
2f77fc4b DG |
669 | assert(session_name); |
670 | ||
671 | memset(tmp_path, 0, sizeof(tmp_path)); | |
672 | ||
673 | /* Flag if we have a default session. */ | |
674 | if (strncmp(session_name, DEFAULT_SESSION_NAME "-", | |
675 | strlen(DEFAULT_SESSION_NAME) + 1) == 0) { | |
676 | have_default_name = 1; | |
677 | } else { | |
678 | /* Get date and time for session path */ | |
679 | time(&rawtime); | |
680 | timeinfo = localtime(&rawtime); | |
681 | strftime(datetime, sizeof(datetime), "%Y%m%d-%H%M%S", timeinfo); | |
173af62f DG |
682 | } |
683 | ||
2f77fc4b DG |
684 | if (have_default_name) { |
685 | ret = snprintf(tmp_path, sizeof(tmp_path), | |
686 | "%s/%s", consumer->subdir, session_name); | |
687 | } else { | |
688 | ret = snprintf(tmp_path, sizeof(tmp_path), | |
689 | "%s/%s-%s/", consumer->subdir, session_name, datetime); | |
690 | } | |
173af62f | 691 | if (ret < 0) { |
2f77fc4b | 692 | PERROR("snprintf session name date"); |
173af62f DG |
693 | goto error; |
694 | } | |
695 | ||
2f77fc4b DG |
696 | strncpy(consumer->subdir, tmp_path, sizeof(consumer->subdir)); |
697 | DBG2("Consumer subdir set to %s", consumer->subdir); | |
173af62f DG |
698 | |
699 | error: | |
700 | return ret; | |
701 | } | |
806e2684 DG |
702 | |
703 | /* | |
704 | * Ask the consumer if the data is ready to bread (available) for the specific | |
705 | * session id. | |
706 | * | |
707 | * This function has a different behavior with the consumer i.e. that it waits | |
708 | * for a reply from the consumer if yes or no the data is available. | |
709 | */ | |
710 | int consumer_is_data_available(unsigned int id, | |
711 | struct consumer_output *consumer) | |
712 | { | |
713 | int ret; | |
c801b30e | 714 | int32_t ret_code = 1; /* Default is that the data is available */ |
806e2684 DG |
715 | struct consumer_socket *socket; |
716 | struct lttng_ht_iter iter; | |
717 | struct lttcomm_consumer_msg msg; | |
718 | ||
719 | assert(consumer); | |
720 | ||
721 | msg.cmd_type = LTTNG_CONSUMER_DATA_AVAILABLE; | |
722 | ||
723 | msg.u.data_available.session_id = (uint64_t) id; | |
724 | ||
725 | DBG3("Consumer data available for id %u", id); | |
726 | ||
c8f59ee5 | 727 | /* Send command for each consumer */ |
806e2684 DG |
728 | cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket, |
729 | node.node) { | |
730 | /* Code flow error */ | |
731 | assert(socket->fd >= 0); | |
732 | ||
733 | pthread_mutex_lock(socket->lock); | |
734 | ||
735 | ret = lttcomm_send_unix_sock(socket->fd, &msg, sizeof(msg)); | |
736 | if (ret < 0) { | |
737 | PERROR("send consumer data available command"); | |
738 | pthread_mutex_unlock(socket->lock); | |
739 | goto error; | |
740 | } | |
741 | ||
742 | /* | |
743 | * Waiting for the reply code where 0 the data is not available and 1 | |
744 | * it is for trace reading. | |
745 | */ | |
746 | ret = lttcomm_recv_unix_sock(socket->fd, &ret_code, sizeof(ret_code)); | |
747 | if (ret < 0) { | |
748 | PERROR("recv consumer data available status"); | |
749 | pthread_mutex_unlock(socket->lock); | |
750 | goto error; | |
751 | } | |
752 | ||
753 | pthread_mutex_unlock(socket->lock); | |
754 | ||
755 | if (ret_code == 0) { | |
756 | break; | |
757 | } | |
758 | } | |
759 | ||
760 | DBG("Consumer data available ret %d", ret_code); | |
761 | return ret_code; | |
762 | ||
763 | error: | |
764 | return -1; | |
765 | } |