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 | ||
f50f23d9 DG |
33 | /* |
34 | * Receive a reply command status message from the consumer. Consumer socket | |
35 | * lock MUST be acquired before calling this function. | |
36 | * | |
37 | * Return 0 on success, -1 on recv error or a negative lttng error code which | |
38 | * was possibly returned by the consumer. | |
39 | */ | |
40 | int consumer_recv_status_reply(struct consumer_socket *sock) | |
41 | { | |
42 | int ret; | |
43 | struct lttcomm_consumer_status_msg reply; | |
44 | ||
45 | assert(sock); | |
46 | ||
47 | ret = lttcomm_recv_unix_sock(sock->fd, &reply, sizeof(reply)); | |
48 | if (ret < 0) { | |
49 | PERROR("recv consumer status msg"); | |
50 | goto end; | |
51 | } | |
52 | ||
53 | if (reply.ret_code == LTTNG_OK) { | |
54 | /* All good. */ | |
55 | ret = 0; | |
56 | } else { | |
57 | ret = -reply.ret_code; | |
58 | ERR("Consumer ret code %d", reply.ret_code); | |
59 | } | |
60 | ||
61 | end: | |
62 | return ret; | |
63 | } | |
64 | ||
2f77fc4b DG |
65 | /* |
66 | * Send destroy relayd command to consumer. | |
67 | * | |
68 | * On success return positive value. On error, negative value. | |
69 | */ | |
70 | int consumer_send_destroy_relayd(struct consumer_socket *sock, | |
71 | struct consumer_output *consumer) | |
72 | { | |
73 | int ret; | |
74 | struct lttcomm_consumer_msg msg; | |
75 | ||
76 | assert(consumer); | |
77 | assert(sock); | |
78 | ||
79 | DBG2("Sending destroy relayd command to consumer..."); | |
80 | ||
81 | /* Bail out if consumer is disabled */ | |
82 | if (!consumer->enabled) { | |
f73fabfd | 83 | ret = LTTNG_OK; |
2f77fc4b DG |
84 | DBG3("Consumer is disabled"); |
85 | goto error; | |
86 | } | |
87 | ||
88 | msg.cmd_type = LTTNG_CONSUMER_DESTROY_RELAYD; | |
89 | msg.u.destroy_relayd.net_seq_idx = consumer->net_seq_index; | |
90 | ||
91 | pthread_mutex_lock(sock->lock); | |
92 | ret = lttcomm_send_unix_sock(sock->fd, &msg, sizeof(msg)); | |
2f77fc4b | 93 | if (ret < 0) { |
c5c45efa DG |
94 | /* Indicate that the consumer is probably closing at this point. */ |
95 | DBG("send consumer destroy relayd command"); | |
f50f23d9 | 96 | goto error_send; |
2f77fc4b DG |
97 | } |
98 | ||
f50f23d9 DG |
99 | /* Don't check the return value. The caller will do it. */ |
100 | ret = consumer_recv_status_reply(sock); | |
101 | ||
2f77fc4b DG |
102 | DBG2("Consumer send destroy relayd command done"); |
103 | ||
f50f23d9 DG |
104 | error_send: |
105 | pthread_mutex_unlock(sock->lock); | |
2f77fc4b DG |
106 | error: |
107 | return ret; | |
108 | } | |
109 | ||
110 | /* | |
111 | * For each consumer socket in the consumer output object, send a destroy | |
112 | * relayd command. | |
113 | */ | |
114 | void consumer_output_send_destroy_relayd(struct consumer_output *consumer) | |
115 | { | |
2f77fc4b DG |
116 | struct lttng_ht_iter iter; |
117 | struct consumer_socket *socket; | |
118 | ||
119 | assert(consumer); | |
120 | ||
121 | /* Destroy any relayd connection */ | |
122 | if (consumer && consumer->type == CONSUMER_DST_NET) { | |
123 | rcu_read_lock(); | |
124 | cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket, | |
125 | node.node) { | |
c617c0c6 MD |
126 | int ret; |
127 | ||
2f77fc4b DG |
128 | /* Send destroy relayd command */ |
129 | ret = consumer_send_destroy_relayd(socket, consumer); | |
130 | if (ret < 0) { | |
c5c45efa | 131 | DBG("Unable to send destroy relayd command to consumer"); |
2f77fc4b DG |
132 | /* Continue since we MUST delete everything at this point. */ |
133 | } | |
134 | } | |
135 | rcu_read_unlock(); | |
136 | } | |
137 | } | |
138 | ||
a4b92340 DG |
139 | /* |
140 | * From a consumer_data structure, allocate and add a consumer socket to the | |
141 | * consumer output. | |
142 | * | |
143 | * Return 0 on success, else negative value on error | |
144 | */ | |
145 | int consumer_create_socket(struct consumer_data *data, | |
146 | struct consumer_output *output) | |
147 | { | |
148 | int ret = 0; | |
149 | struct consumer_socket *socket; | |
150 | ||
151 | assert(data); | |
152 | ||
153 | if (output == NULL || data->cmd_sock < 0) { | |
154 | /* | |
155 | * Not an error. Possible there is simply not spawned consumer or it's | |
156 | * disabled for the tracing session asking the socket. | |
157 | */ | |
158 | goto error; | |
159 | } | |
160 | ||
161 | rcu_read_lock(); | |
162 | socket = consumer_find_socket(data->cmd_sock, output); | |
163 | rcu_read_unlock(); | |
164 | if (socket == NULL) { | |
165 | socket = consumer_allocate_socket(data->cmd_sock); | |
166 | if (socket == NULL) { | |
167 | ret = -1; | |
168 | goto error; | |
169 | } | |
170 | ||
2f77fc4b | 171 | socket->registered = 0; |
a4b92340 DG |
172 | socket->lock = &data->lock; |
173 | rcu_read_lock(); | |
174 | consumer_add_socket(socket, output); | |
175 | rcu_read_unlock(); | |
176 | } | |
177 | ||
178 | DBG3("Consumer socket created (fd: %d) and added to output", | |
179 | data->cmd_sock); | |
180 | ||
181 | error: | |
182 | return ret; | |
183 | } | |
184 | ||
173af62f DG |
185 | /* |
186 | * Find a consumer_socket in a consumer_output hashtable. Read side lock must | |
187 | * be acquired before calling this function and across use of the | |
188 | * returned consumer_socket. | |
189 | */ | |
190 | struct consumer_socket *consumer_find_socket(int key, | |
191 | struct consumer_output *consumer) | |
192 | { | |
193 | struct lttng_ht_iter iter; | |
194 | struct lttng_ht_node_ulong *node; | |
195 | struct consumer_socket *socket = NULL; | |
196 | ||
197 | /* Negative keys are lookup failures */ | |
a4b92340 | 198 | if (key < 0 || consumer == NULL) { |
173af62f DG |
199 | return NULL; |
200 | } | |
201 | ||
202 | lttng_ht_lookup(consumer->socks, (void *)((unsigned long) key), | |
203 | &iter); | |
204 | node = lttng_ht_iter_get_node_ulong(&iter); | |
205 | if (node != NULL) { | |
206 | socket = caa_container_of(node, struct consumer_socket, node); | |
207 | } | |
208 | ||
209 | return socket; | |
210 | } | |
211 | ||
212 | /* | |
213 | * Allocate a new consumer_socket and return the pointer. | |
214 | */ | |
215 | struct consumer_socket *consumer_allocate_socket(int fd) | |
216 | { | |
217 | struct consumer_socket *socket = NULL; | |
218 | ||
219 | socket = zmalloc(sizeof(struct consumer_socket)); | |
220 | if (socket == NULL) { | |
221 | PERROR("zmalloc consumer socket"); | |
222 | goto error; | |
223 | } | |
224 | ||
225 | socket->fd = fd; | |
226 | lttng_ht_node_init_ulong(&socket->node, fd); | |
227 | ||
228 | error: | |
229 | return socket; | |
230 | } | |
231 | ||
232 | /* | |
233 | * Add consumer socket to consumer output object. Read side lock must be | |
234 | * acquired before calling this function. | |
235 | */ | |
236 | void consumer_add_socket(struct consumer_socket *sock, | |
237 | struct consumer_output *consumer) | |
238 | { | |
239 | assert(sock); | |
240 | assert(consumer); | |
241 | ||
242 | lttng_ht_add_unique_ulong(consumer->socks, &sock->node); | |
243 | } | |
244 | ||
245 | /* | |
246 | * Delte consumer socket to consumer output object. Read side lock must be | |
247 | * acquired before calling this function. | |
248 | */ | |
249 | void consumer_del_socket(struct consumer_socket *sock, | |
250 | struct consumer_output *consumer) | |
251 | { | |
252 | int ret; | |
253 | struct lttng_ht_iter iter; | |
254 | ||
255 | assert(sock); | |
256 | assert(consumer); | |
257 | ||
258 | iter.iter.node = &sock->node.node; | |
259 | ret = lttng_ht_del(consumer->socks, &iter); | |
260 | assert(!ret); | |
261 | } | |
262 | ||
263 | /* | |
264 | * RCU destroy call function. | |
265 | */ | |
266 | static void destroy_socket_rcu(struct rcu_head *head) | |
267 | { | |
268 | struct lttng_ht_node_ulong *node = | |
269 | caa_container_of(head, struct lttng_ht_node_ulong, head); | |
270 | struct consumer_socket *socket = | |
271 | caa_container_of(node, struct consumer_socket, node); | |
272 | ||
273 | free(socket); | |
274 | } | |
275 | ||
276 | /* | |
277 | * Destroy and free socket pointer in a call RCU. Read side lock must be | |
278 | * acquired before calling this function. | |
279 | */ | |
280 | void consumer_destroy_socket(struct consumer_socket *sock) | |
281 | { | |
282 | assert(sock); | |
283 | ||
284 | /* | |
285 | * We DO NOT close the file descriptor here since it is global to the | |
2f77fc4b DG |
286 | * session daemon and is closed only if the consumer dies or a custom |
287 | * consumer was registered, | |
173af62f | 288 | */ |
2f77fc4b DG |
289 | if (sock->registered) { |
290 | DBG3("Consumer socket was registered. Closing fd %d", sock->fd); | |
291 | lttcomm_close_unix_sock(sock->fd); | |
292 | } | |
173af62f DG |
293 | |
294 | call_rcu(&sock->node.head, destroy_socket_rcu); | |
295 | } | |
296 | ||
00e2e675 DG |
297 | /* |
298 | * Allocate and assign data to a consumer_output object. | |
299 | * | |
300 | * Return pointer to structure. | |
301 | */ | |
302 | struct consumer_output *consumer_create_output(enum consumer_dst_type type) | |
303 | { | |
304 | struct consumer_output *output = NULL; | |
305 | ||
306 | output = zmalloc(sizeof(struct consumer_output)); | |
307 | if (output == NULL) { | |
308 | PERROR("zmalloc consumer_output"); | |
309 | goto error; | |
310 | } | |
311 | ||
312 | /* By default, consumer output is enabled */ | |
313 | output->enabled = 1; | |
314 | output->type = type; | |
315 | output->net_seq_index = -1; | |
173af62f DG |
316 | |
317 | output->socks = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG); | |
00e2e675 DG |
318 | |
319 | error: | |
320 | return output; | |
321 | } | |
322 | ||
323 | /* | |
324 | * Delete the consumer_output object from the list and free the ptr. | |
325 | */ | |
326 | void consumer_destroy_output(struct consumer_output *obj) | |
327 | { | |
328 | if (obj == NULL) { | |
329 | return; | |
330 | } | |
331 | ||
173af62f DG |
332 | if (obj->socks) { |
333 | struct lttng_ht_iter iter; | |
334 | struct consumer_socket *socket; | |
335 | ||
2f77fc4b | 336 | rcu_read_lock(); |
173af62f | 337 | cds_lfht_for_each_entry(obj->socks->ht, &iter.iter, socket, node.node) { |
2f77fc4b | 338 | consumer_del_socket(socket, obj); |
173af62f DG |
339 | consumer_destroy_socket(socket); |
340 | } | |
2f77fc4b DG |
341 | rcu_read_unlock(); |
342 | ||
343 | /* Finally destroy HT */ | |
344 | lttng_ht_destroy(obj->socks); | |
00e2e675 | 345 | } |
173af62f | 346 | |
00e2e675 DG |
347 | free(obj); |
348 | } | |
349 | ||
350 | /* | |
351 | * Copy consumer output and returned the newly allocated copy. | |
352 | */ | |
353 | struct consumer_output *consumer_copy_output(struct consumer_output *obj) | |
354 | { | |
09a90bcd | 355 | struct lttng_ht *tmp_ht_ptr; |
173af62f DG |
356 | struct lttng_ht_iter iter; |
357 | struct consumer_socket *socket, *copy_sock; | |
00e2e675 DG |
358 | struct consumer_output *output; |
359 | ||
360 | assert(obj); | |
361 | ||
362 | output = consumer_create_output(obj->type); | |
363 | if (output == NULL) { | |
364 | goto error; | |
365 | } | |
09a90bcd DG |
366 | /* Avoid losing the HT reference after the memcpy() */ |
367 | tmp_ht_ptr = output->socks; | |
00e2e675 DG |
368 | |
369 | memcpy(output, obj, sizeof(struct consumer_output)); | |
370 | ||
09a90bcd DG |
371 | /* Putting back the HT pointer and start copying socket(s). */ |
372 | output->socks = tmp_ht_ptr; | |
173af62f DG |
373 | |
374 | cds_lfht_for_each_entry(obj->socks->ht, &iter.iter, socket, node.node) { | |
375 | /* Create new socket object. */ | |
376 | copy_sock = consumer_allocate_socket(socket->fd); | |
377 | if (copy_sock == NULL) { | |
378 | goto malloc_error; | |
379 | } | |
380 | ||
09a90bcd | 381 | copy_sock->registered = socket->registered; |
173af62f DG |
382 | copy_sock->lock = socket->lock; |
383 | consumer_add_socket(copy_sock, output); | |
384 | } | |
385 | ||
00e2e675 DG |
386 | error: |
387 | return output; | |
173af62f DG |
388 | |
389 | malloc_error: | |
390 | consumer_destroy_output(output); | |
391 | return NULL; | |
00e2e675 DG |
392 | } |
393 | ||
394 | /* | |
395 | * Set network URI to the consumer output object. | |
396 | * | |
ad20f474 DG |
397 | * Return 0 on success. Return 1 if the URI were equal. Else, negative value on |
398 | * error. | |
00e2e675 DG |
399 | */ |
400 | int consumer_set_network_uri(struct consumer_output *obj, | |
401 | struct lttng_uri *uri) | |
402 | { | |
403 | int ret; | |
404 | char tmp_path[PATH_MAX]; | |
405 | char hostname[HOST_NAME_MAX]; | |
406 | struct lttng_uri *dst_uri = NULL; | |
407 | ||
408 | /* Code flow error safety net. */ | |
409 | assert(obj); | |
410 | assert(uri); | |
411 | ||
412 | switch (uri->stype) { | |
413 | case LTTNG_STREAM_CONTROL: | |
414 | dst_uri = &obj->dst.net.control; | |
415 | obj->dst.net.control_isset = 1; | |
416 | if (uri->port == 0) { | |
417 | /* Assign default port. */ | |
418 | uri->port = DEFAULT_NETWORK_CONTROL_PORT; | |
419 | } | |
ad20f474 | 420 | DBG3("Consumer control URI set with port %d", uri->port); |
00e2e675 DG |
421 | break; |
422 | case LTTNG_STREAM_DATA: | |
423 | dst_uri = &obj->dst.net.data; | |
424 | obj->dst.net.data_isset = 1; | |
425 | if (uri->port == 0) { | |
426 | /* Assign default port. */ | |
427 | uri->port = DEFAULT_NETWORK_DATA_PORT; | |
428 | } | |
ad20f474 | 429 | DBG3("Consumer data URI set with port %d", uri->port); |
00e2e675 DG |
430 | break; |
431 | default: | |
432 | ERR("Set network uri type unknown %d", uri->stype); | |
433 | goto error; | |
434 | } | |
435 | ||
436 | ret = uri_compare(dst_uri, uri); | |
437 | if (!ret) { | |
438 | /* Same URI, don't touch it and return success. */ | |
439 | DBG3("URI network compare are the same"); | |
ad20f474 | 440 | goto equal; |
00e2e675 DG |
441 | } |
442 | ||
443 | /* URIs were not equal, replacing it. */ | |
444 | memset(dst_uri, 0, sizeof(struct lttng_uri)); | |
445 | memcpy(dst_uri, uri, sizeof(struct lttng_uri)); | |
446 | obj->type = CONSUMER_DST_NET; | |
447 | ||
448 | /* Handle subdir and add hostname in front. */ | |
449 | if (dst_uri->stype == LTTNG_STREAM_CONTROL) { | |
450 | /* Get hostname to append it in the pathname */ | |
451 | ret = gethostname(hostname, sizeof(hostname)); | |
452 | if (ret < 0) { | |
453 | PERROR("gethostname. Fallback on default localhost"); | |
454 | strncpy(hostname, "localhost", sizeof(hostname)); | |
455 | } | |
456 | hostname[sizeof(hostname) - 1] = '\0'; | |
457 | ||
458 | /* Setup consumer subdir if none present in the control URI */ | |
459 | if (strlen(dst_uri->subdir) == 0) { | |
460 | ret = snprintf(tmp_path, sizeof(tmp_path), "%s/%s", | |
461 | hostname, obj->subdir); | |
462 | } else { | |
463 | ret = snprintf(tmp_path, sizeof(tmp_path), "%s/%s", | |
464 | hostname, dst_uri->subdir); | |
465 | } | |
466 | if (ret < 0) { | |
467 | PERROR("snprintf set consumer uri subdir"); | |
468 | goto error; | |
469 | } | |
470 | ||
471 | strncpy(obj->subdir, tmp_path, sizeof(obj->subdir)); | |
472 | DBG3("Consumer set network uri subdir path %s", tmp_path); | |
473 | } | |
474 | ||
00e2e675 | 475 | return 0; |
ad20f474 DG |
476 | equal: |
477 | return 1; | |
00e2e675 DG |
478 | error: |
479 | return -1; | |
480 | } | |
481 | ||
482 | /* | |
483 | * Send file descriptor to consumer via sock. | |
484 | */ | |
f50f23d9 | 485 | int consumer_send_fds(struct consumer_socket *sock, int *fds, size_t nb_fd) |
00e2e675 DG |
486 | { |
487 | int ret; | |
488 | ||
489 | assert(fds); | |
f50f23d9 | 490 | assert(sock); |
00e2e675 DG |
491 | assert(nb_fd > 0); |
492 | ||
f50f23d9 | 493 | ret = lttcomm_send_fds_unix_sock(sock->fd, fds, nb_fd); |
00e2e675 DG |
494 | if (ret < 0) { |
495 | PERROR("send consumer fds"); | |
496 | goto error; | |
497 | } | |
498 | ||
f50f23d9 DG |
499 | ret = consumer_recv_status_reply(sock); |
500 | ||
00e2e675 DG |
501 | error: |
502 | return ret; | |
503 | } | |
504 | ||
505 | /* | |
506 | * Consumer send channel communication message structure to consumer. | |
507 | */ | |
f50f23d9 DG |
508 | int consumer_send_channel(struct consumer_socket *sock, |
509 | struct lttcomm_consumer_msg *msg) | |
00e2e675 DG |
510 | { |
511 | int ret; | |
512 | ||
513 | assert(msg); | |
f50f23d9 DG |
514 | assert(sock); |
515 | assert(sock->fd >= 0); | |
00e2e675 | 516 | |
f50f23d9 | 517 | ret = lttcomm_send_unix_sock(sock->fd, msg, |
00e2e675 DG |
518 | sizeof(struct lttcomm_consumer_msg)); |
519 | if (ret < 0) { | |
520 | PERROR("send consumer channel"); | |
521 | goto error; | |
522 | } | |
523 | ||
f50f23d9 DG |
524 | ret = consumer_recv_status_reply(sock); |
525 | ||
00e2e675 DG |
526 | error: |
527 | return ret; | |
528 | } | |
529 | ||
530 | /* | |
531 | * Init channel communication message structure. | |
532 | */ | |
533 | void consumer_init_channel_comm_msg(struct lttcomm_consumer_msg *msg, | |
534 | enum lttng_consumer_command cmd, | |
535 | int channel_key, | |
536 | uint64_t max_sb_size, | |
537 | uint64_t mmap_len, | |
c30aaa51 MD |
538 | const char *name, |
539 | unsigned int nb_init_streams) | |
00e2e675 DG |
540 | { |
541 | assert(msg); | |
542 | ||
543 | /* TODO: Args validation */ | |
544 | ||
545 | /* Zeroed structure */ | |
546 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
547 | ||
548 | /* Send channel */ | |
549 | msg->cmd_type = cmd; | |
550 | msg->u.channel.channel_key = channel_key; | |
551 | msg->u.channel.max_sb_size = max_sb_size; | |
552 | msg->u.channel.mmap_len = mmap_len; | |
c30aaa51 | 553 | msg->u.channel.nb_init_streams = nb_init_streams; |
00e2e675 DG |
554 | } |
555 | ||
556 | /* | |
557 | * Init stream communication message structure. | |
558 | */ | |
559 | void consumer_init_stream_comm_msg(struct lttcomm_consumer_msg *msg, | |
560 | enum lttng_consumer_command cmd, | |
561 | int channel_key, | |
562 | int stream_key, | |
563 | uint32_t state, | |
564 | enum lttng_event_output output, | |
565 | uint64_t mmap_len, | |
566 | uid_t uid, | |
567 | gid_t gid, | |
568 | int net_index, | |
569 | unsigned int metadata_flag, | |
570 | const char *name, | |
ca22feea DG |
571 | const char *pathname, |
572 | unsigned int session_id) | |
00e2e675 DG |
573 | { |
574 | assert(msg); | |
575 | ||
576 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
577 | ||
578 | /* TODO: Args validation */ | |
579 | ||
580 | msg->cmd_type = cmd; | |
581 | msg->u.stream.channel_key = channel_key; | |
582 | msg->u.stream.stream_key = stream_key; | |
583 | msg->u.stream.state = state; | |
584 | msg->u.stream.output = output; | |
585 | msg->u.stream.mmap_len = mmap_len; | |
586 | msg->u.stream.uid = uid; | |
587 | msg->u.stream.gid = gid; | |
588 | msg->u.stream.net_index = net_index; | |
589 | msg->u.stream.metadata_flag = metadata_flag; | |
ca22feea | 590 | msg->u.stream.session_id = (uint64_t) session_id; |
00e2e675 DG |
591 | strncpy(msg->u.stream.name, name, sizeof(msg->u.stream.name)); |
592 | msg->u.stream.name[sizeof(msg->u.stream.name) - 1] = '\0'; | |
593 | strncpy(msg->u.stream.path_name, pathname, | |
594 | sizeof(msg->u.stream.path_name)); | |
595 | msg->u.stream.path_name[sizeof(msg->u.stream.path_name) - 1] = '\0'; | |
596 | } | |
597 | ||
598 | /* | |
599 | * Send stream communication structure to the consumer. | |
600 | */ | |
f50f23d9 DG |
601 | int consumer_send_stream(struct consumer_socket *sock, |
602 | struct consumer_output *dst, struct lttcomm_consumer_msg *msg, | |
603 | int *fds, size_t nb_fd) | |
00e2e675 DG |
604 | { |
605 | int ret; | |
606 | ||
607 | assert(msg); | |
608 | assert(dst); | |
f50f23d9 | 609 | assert(sock); |
00e2e675 DG |
610 | |
611 | switch (dst->type) { | |
612 | case CONSUMER_DST_NET: | |
613 | /* Consumer should send the stream on the network. */ | |
614 | msg->u.stream.net_index = dst->net_seq_index; | |
615 | break; | |
616 | case CONSUMER_DST_LOCAL: | |
617 | /* Add stream file name to stream path */ | |
c30ce0b3 CB |
618 | strncat(msg->u.stream.path_name, "/", |
619 | sizeof(msg->u.stream.path_name) - | |
620 | strlen(msg->u.stream.path_name) - 1); | |
00e2e675 | 621 | strncat(msg->u.stream.path_name, msg->u.stream.name, |
c30ce0b3 CB |
622 | sizeof(msg->u.stream.path_name) - |
623 | strlen(msg->u.stream.path_name) - 1); | |
00e2e675 DG |
624 | msg->u.stream.path_name[sizeof(msg->u.stream.path_name) - 1] = '\0'; |
625 | /* Indicate that the stream is NOT network */ | |
626 | msg->u.stream.net_index = -1; | |
627 | break; | |
628 | default: | |
629 | ERR("Consumer unknown output type (%d)", dst->type); | |
630 | ret = -1; | |
631 | goto error; | |
632 | } | |
633 | ||
634 | /* Send on socket */ | |
f50f23d9 | 635 | ret = lttcomm_send_unix_sock(sock->fd, msg, |
00e2e675 DG |
636 | sizeof(struct lttcomm_consumer_msg)); |
637 | if (ret < 0) { | |
638 | PERROR("send consumer stream"); | |
639 | goto error; | |
640 | } | |
641 | ||
f50f23d9 DG |
642 | ret = consumer_recv_status_reply(sock); |
643 | if (ret < 0) { | |
644 | goto error; | |
645 | } | |
646 | ||
00e2e675 DG |
647 | ret = consumer_send_fds(sock, fds, nb_fd); |
648 | if (ret < 0) { | |
649 | goto error; | |
650 | } | |
651 | ||
652 | error: | |
653 | return ret; | |
654 | } | |
37278a1e DG |
655 | |
656 | /* | |
657 | * Send relayd socket to consumer associated with a session name. | |
658 | * | |
659 | * On success return positive value. On error, negative value. | |
660 | */ | |
f50f23d9 | 661 | int consumer_send_relayd_socket(struct consumer_socket *consumer_sock, |
37278a1e | 662 | struct lttcomm_sock *sock, struct consumer_output *consumer, |
46e6455f | 663 | enum lttng_stream_type type, unsigned int session_id) |
37278a1e DG |
664 | { |
665 | int ret; | |
666 | struct lttcomm_consumer_msg msg; | |
667 | ||
668 | /* Code flow error. Safety net. */ | |
669 | assert(sock); | |
670 | assert(consumer); | |
f50f23d9 | 671 | assert(consumer_sock); |
37278a1e DG |
672 | |
673 | /* Bail out if consumer is disabled */ | |
674 | if (!consumer->enabled) { | |
f73fabfd | 675 | ret = LTTNG_OK; |
37278a1e DG |
676 | goto error; |
677 | } | |
678 | ||
679 | msg.cmd_type = LTTNG_CONSUMER_ADD_RELAYD_SOCKET; | |
680 | /* | |
681 | * Assign network consumer output index using the temporary consumer since | |
682 | * this call should only be made from within a set_consumer_uri() function | |
683 | * call in the session daemon. | |
684 | */ | |
685 | msg.u.relayd_sock.net_index = consumer->net_seq_index; | |
686 | msg.u.relayd_sock.type = type; | |
46e6455f | 687 | msg.u.relayd_sock.session_id = session_id; |
37278a1e DG |
688 | memcpy(&msg.u.relayd_sock.sock, sock, sizeof(msg.u.relayd_sock.sock)); |
689 | ||
f50f23d9 DG |
690 | DBG3("Sending relayd sock info to consumer on %d", consumer_sock->fd); |
691 | ret = lttcomm_send_unix_sock(consumer_sock->fd, &msg, sizeof(msg)); | |
37278a1e DG |
692 | if (ret < 0) { |
693 | PERROR("send consumer relayd socket info"); | |
694 | goto error; | |
695 | } | |
696 | ||
f50f23d9 DG |
697 | ret = consumer_recv_status_reply(consumer_sock); |
698 | if (ret < 0) { | |
699 | goto error; | |
700 | } | |
701 | ||
37278a1e DG |
702 | DBG3("Sending relayd socket file descriptor to consumer"); |
703 | ret = consumer_send_fds(consumer_sock, &sock->fd, 1); | |
704 | if (ret < 0) { | |
705 | goto error; | |
706 | } | |
707 | ||
708 | DBG2("Consumer relayd socket sent"); | |
709 | ||
710 | error: | |
711 | return ret; | |
712 | } | |
173af62f DG |
713 | |
714 | /* | |
2f77fc4b DG |
715 | * Set consumer subdirectory using the session name and a generated datetime if |
716 | * needed. This is appended to the current subdirectory. | |
173af62f | 717 | */ |
2f77fc4b DG |
718 | int consumer_set_subdir(struct consumer_output *consumer, |
719 | const char *session_name) | |
173af62f | 720 | { |
2f77fc4b DG |
721 | int ret = 0; |
722 | unsigned int have_default_name = 0; | |
723 | char datetime[16], tmp_path[PATH_MAX]; | |
724 | time_t rawtime; | |
725 | struct tm *timeinfo; | |
173af62f DG |
726 | |
727 | assert(consumer); | |
2f77fc4b DG |
728 | assert(session_name); |
729 | ||
730 | memset(tmp_path, 0, sizeof(tmp_path)); | |
731 | ||
732 | /* Flag if we have a default session. */ | |
733 | if (strncmp(session_name, DEFAULT_SESSION_NAME "-", | |
734 | strlen(DEFAULT_SESSION_NAME) + 1) == 0) { | |
735 | have_default_name = 1; | |
736 | } else { | |
737 | /* Get date and time for session path */ | |
738 | time(&rawtime); | |
739 | timeinfo = localtime(&rawtime); | |
740 | strftime(datetime, sizeof(datetime), "%Y%m%d-%H%M%S", timeinfo); | |
173af62f DG |
741 | } |
742 | ||
2f77fc4b DG |
743 | if (have_default_name) { |
744 | ret = snprintf(tmp_path, sizeof(tmp_path), | |
745 | "%s/%s", consumer->subdir, session_name); | |
746 | } else { | |
747 | ret = snprintf(tmp_path, sizeof(tmp_path), | |
748 | "%s/%s-%s/", consumer->subdir, session_name, datetime); | |
749 | } | |
173af62f | 750 | if (ret < 0) { |
2f77fc4b | 751 | PERROR("snprintf session name date"); |
173af62f DG |
752 | goto error; |
753 | } | |
754 | ||
2f77fc4b DG |
755 | strncpy(consumer->subdir, tmp_path, sizeof(consumer->subdir)); |
756 | DBG2("Consumer subdir set to %s", consumer->subdir); | |
173af62f DG |
757 | |
758 | error: | |
759 | return ret; | |
760 | } | |
806e2684 DG |
761 | |
762 | /* | |
6d805429 | 763 | * Ask the consumer if the data is ready to read (NOT pending) for the specific |
806e2684 DG |
764 | * session id. |
765 | * | |
766 | * This function has a different behavior with the consumer i.e. that it waits | |
6d805429 | 767 | * for a reply from the consumer if yes or no the data is pending. |
806e2684 | 768 | */ |
6d805429 | 769 | int consumer_is_data_pending(unsigned int id, |
806e2684 DG |
770 | struct consumer_output *consumer) |
771 | { | |
772 | int ret; | |
6d805429 | 773 | int32_t ret_code = 0; /* Default is that the data is NOT pending */ |
806e2684 DG |
774 | struct consumer_socket *socket; |
775 | struct lttng_ht_iter iter; | |
776 | struct lttcomm_consumer_msg msg; | |
777 | ||
778 | assert(consumer); | |
779 | ||
6d805429 | 780 | msg.cmd_type = LTTNG_CONSUMER_DATA_PENDING; |
806e2684 | 781 | |
6d805429 | 782 | msg.u.data_pending.session_id = (uint64_t) id; |
806e2684 | 783 | |
6d805429 | 784 | DBG3("Consumer data pending for id %u", id); |
806e2684 | 785 | |
c8f59ee5 | 786 | /* Send command for each consumer */ |
806e2684 DG |
787 | cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket, |
788 | node.node) { | |
789 | /* Code flow error */ | |
790 | assert(socket->fd >= 0); | |
791 | ||
792 | pthread_mutex_lock(socket->lock); | |
793 | ||
794 | ret = lttcomm_send_unix_sock(socket->fd, &msg, sizeof(msg)); | |
795 | if (ret < 0) { | |
6d805429 | 796 | PERROR("send consumer data pending command"); |
806e2684 DG |
797 | pthread_mutex_unlock(socket->lock); |
798 | goto error; | |
799 | } | |
800 | ||
f50f23d9 DG |
801 | /* |
802 | * No need for a recv reply status because the answer to the command is | |
803 | * the reply status message. | |
804 | */ | |
805 | ||
806e2684 DG |
806 | ret = lttcomm_recv_unix_sock(socket->fd, &ret_code, sizeof(ret_code)); |
807 | if (ret < 0) { | |
6d805429 | 808 | PERROR("recv consumer data pending status"); |
806e2684 DG |
809 | pthread_mutex_unlock(socket->lock); |
810 | goto error; | |
811 | } | |
812 | ||
813 | pthread_mutex_unlock(socket->lock); | |
814 | ||
6d805429 | 815 | if (ret_code == 1) { |
806e2684 DG |
816 | break; |
817 | } | |
818 | } | |
819 | ||
6d805429 | 820 | DBG("Consumer data pending ret %d", ret_code); |
806e2684 DG |
821 | return ret_code; |
822 | ||
823 | error: | |
824 | return -1; | |
825 | } |