Commit | Line | Data |
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00e2e675 DG |
1 | /* |
2 | * Copyright (C) 2012 - David Goulet <dgoulet@efficios.com> | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms of the GNU General Public License, version 2 only, as | |
6 | * published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
11 | * more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License along with | |
14 | * this program; if not, write to the Free Software Foundation, Inc., 51 | |
15 | * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
16 | */ | |
17 | ||
18 | #define _GNU_SOURCE | |
19 | #include <assert.h> | |
20 | #include <stdio.h> | |
21 | #include <stdlib.h> | |
22 | #include <string.h> | |
23 | #include <sys/stat.h> | |
24 | #include <sys/types.h> | |
25 | #include <unistd.h> | |
d88aee68 | 26 | #include <inttypes.h> |
00e2e675 DG |
27 | |
28 | #include <common/common.h> | |
29 | #include <common/defaults.h> | |
30 | #include <common/uri.h> | |
31 | ||
32 | #include "consumer.h" | |
7972aab2 DG |
33 | #include "health.h" |
34 | #include "ust-app.h" | |
00e2e675 | 35 | |
f50f23d9 DG |
36 | /* |
37 | * Receive a reply command status message from the consumer. Consumer socket | |
38 | * lock MUST be acquired before calling this function. | |
39 | * | |
40 | * Return 0 on success, -1 on recv error or a negative lttng error code which | |
41 | * was possibly returned by the consumer. | |
42 | */ | |
43 | int consumer_recv_status_reply(struct consumer_socket *sock) | |
44 | { | |
45 | int ret; | |
46 | struct lttcomm_consumer_status_msg reply; | |
47 | ||
48 | assert(sock); | |
49 | ||
50 | ret = lttcomm_recv_unix_sock(sock->fd, &reply, sizeof(reply)); | |
a6cd2b97 DG |
51 | if (ret <= 0) { |
52 | if (ret == 0) { | |
53 | /* Orderly shutdown. Don't return 0 which means success. */ | |
54 | ret = -1; | |
55 | } | |
3448e266 DG |
56 | /* The above call will print a PERROR on error. */ |
57 | DBG("Fail to receive status reply on sock %d", sock->fd); | |
f50f23d9 DG |
58 | goto end; |
59 | } | |
60 | ||
61 | if (reply.ret_code == LTTNG_OK) { | |
62 | /* All good. */ | |
63 | ret = 0; | |
64 | } else { | |
65 | ret = -reply.ret_code; | |
ffe60014 | 66 | DBG("Consumer ret code %d", ret); |
f50f23d9 DG |
67 | } |
68 | ||
69 | end: | |
70 | return ret; | |
71 | } | |
72 | ||
ffe60014 DG |
73 | /* |
74 | * Once the ASK_CHANNEL command is sent to the consumer, the channel | |
75 | * information are sent back. This call receives that data and populates key | |
76 | * and stream_count. | |
77 | * | |
78 | * On success return 0 and both key and stream_count are set. On error, a | |
79 | * negative value is sent back and both parameters are untouched. | |
80 | */ | |
81 | int consumer_recv_status_channel(struct consumer_socket *sock, | |
d88aee68 | 82 | uint64_t *key, unsigned int *stream_count) |
ffe60014 DG |
83 | { |
84 | int ret; | |
85 | struct lttcomm_consumer_status_channel reply; | |
86 | ||
87 | assert(sock); | |
88 | assert(stream_count); | |
89 | assert(key); | |
90 | ||
91 | ret = lttcomm_recv_unix_sock(sock->fd, &reply, sizeof(reply)); | |
92 | if (ret <= 0) { | |
93 | if (ret == 0) { | |
94 | /* Orderly shutdown. Don't return 0 which means success. */ | |
95 | ret = -1; | |
96 | } | |
97 | /* The above call will print a PERROR on error. */ | |
98 | DBG("Fail to receive status reply on sock %d", sock->fd); | |
99 | goto end; | |
100 | } | |
101 | ||
102 | /* An error is possible so don't touch the key and stream_count. */ | |
103 | if (reply.ret_code != LTTNG_OK) { | |
104 | ret = -1; | |
105 | goto end; | |
106 | } | |
107 | ||
108 | *key = reply.key; | |
109 | *stream_count = reply.stream_count; | |
110 | ||
111 | end: | |
112 | return ret; | |
113 | } | |
114 | ||
2f77fc4b DG |
115 | /* |
116 | * Send destroy relayd command to consumer. | |
117 | * | |
118 | * On success return positive value. On error, negative value. | |
119 | */ | |
120 | int consumer_send_destroy_relayd(struct consumer_socket *sock, | |
121 | struct consumer_output *consumer) | |
122 | { | |
123 | int ret; | |
124 | struct lttcomm_consumer_msg msg; | |
125 | ||
126 | assert(consumer); | |
127 | assert(sock); | |
128 | ||
ffe60014 | 129 | DBG2("Sending destroy relayd command to consumer sock %d", sock->fd); |
2f77fc4b DG |
130 | |
131 | /* Bail out if consumer is disabled */ | |
132 | if (!consumer->enabled) { | |
f73fabfd | 133 | ret = LTTNG_OK; |
2f77fc4b DG |
134 | DBG3("Consumer is disabled"); |
135 | goto error; | |
136 | } | |
137 | ||
138 | msg.cmd_type = LTTNG_CONSUMER_DESTROY_RELAYD; | |
139 | msg.u.destroy_relayd.net_seq_idx = consumer->net_seq_index; | |
140 | ||
141 | pthread_mutex_lock(sock->lock); | |
142 | ret = lttcomm_send_unix_sock(sock->fd, &msg, sizeof(msg)); | |
2f77fc4b | 143 | if (ret < 0) { |
c5c45efa DG |
144 | /* Indicate that the consumer is probably closing at this point. */ |
145 | DBG("send consumer destroy relayd command"); | |
f50f23d9 | 146 | goto error_send; |
2f77fc4b DG |
147 | } |
148 | ||
f50f23d9 DG |
149 | /* Don't check the return value. The caller will do it. */ |
150 | ret = consumer_recv_status_reply(sock); | |
151 | ||
2f77fc4b DG |
152 | DBG2("Consumer send destroy relayd command done"); |
153 | ||
f50f23d9 DG |
154 | error_send: |
155 | pthread_mutex_unlock(sock->lock); | |
2f77fc4b DG |
156 | error: |
157 | return ret; | |
158 | } | |
159 | ||
160 | /* | |
161 | * For each consumer socket in the consumer output object, send a destroy | |
162 | * relayd command. | |
163 | */ | |
164 | void consumer_output_send_destroy_relayd(struct consumer_output *consumer) | |
165 | { | |
2f77fc4b DG |
166 | struct lttng_ht_iter iter; |
167 | struct consumer_socket *socket; | |
168 | ||
169 | assert(consumer); | |
170 | ||
171 | /* Destroy any relayd connection */ | |
172 | if (consumer && consumer->type == CONSUMER_DST_NET) { | |
173 | rcu_read_lock(); | |
174 | cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket, | |
175 | node.node) { | |
c617c0c6 MD |
176 | int ret; |
177 | ||
2f77fc4b DG |
178 | /* Send destroy relayd command */ |
179 | ret = consumer_send_destroy_relayd(socket, consumer); | |
180 | if (ret < 0) { | |
c5c45efa | 181 | DBG("Unable to send destroy relayd command to consumer"); |
2f77fc4b DG |
182 | /* Continue since we MUST delete everything at this point. */ |
183 | } | |
184 | } | |
185 | rcu_read_unlock(); | |
186 | } | |
187 | } | |
188 | ||
a4b92340 DG |
189 | /* |
190 | * From a consumer_data structure, allocate and add a consumer socket to the | |
191 | * consumer output. | |
192 | * | |
193 | * Return 0 on success, else negative value on error | |
194 | */ | |
195 | int consumer_create_socket(struct consumer_data *data, | |
196 | struct consumer_output *output) | |
197 | { | |
198 | int ret = 0; | |
199 | struct consumer_socket *socket; | |
200 | ||
201 | assert(data); | |
202 | ||
203 | if (output == NULL || data->cmd_sock < 0) { | |
204 | /* | |
205 | * Not an error. Possible there is simply not spawned consumer or it's | |
206 | * disabled for the tracing session asking the socket. | |
207 | */ | |
208 | goto error; | |
209 | } | |
210 | ||
211 | rcu_read_lock(); | |
212 | socket = consumer_find_socket(data->cmd_sock, output); | |
213 | rcu_read_unlock(); | |
214 | if (socket == NULL) { | |
215 | socket = consumer_allocate_socket(data->cmd_sock); | |
216 | if (socket == NULL) { | |
217 | ret = -1; | |
218 | goto error; | |
219 | } | |
220 | ||
2f77fc4b | 221 | socket->registered = 0; |
a4b92340 DG |
222 | socket->lock = &data->lock; |
223 | rcu_read_lock(); | |
224 | consumer_add_socket(socket, output); | |
225 | rcu_read_unlock(); | |
226 | } | |
227 | ||
228 | DBG3("Consumer socket created (fd: %d) and added to output", | |
229 | data->cmd_sock); | |
230 | ||
231 | error: | |
232 | return ret; | |
233 | } | |
234 | ||
7972aab2 DG |
235 | /* |
236 | * Return the consumer socket from the given consumer output with the right | |
237 | * bitness. On error, returns NULL. | |
238 | * | |
239 | * The caller MUST acquire a rcu read side lock and keep it until the socket | |
240 | * object reference is not needed anymore. | |
241 | */ | |
242 | struct consumer_socket *consumer_find_socket_by_bitness(int bits, | |
243 | struct consumer_output *consumer) | |
244 | { | |
245 | int consumer_fd; | |
246 | struct consumer_socket *socket = NULL; | |
247 | ||
248 | switch (bits) { | |
249 | case 64: | |
250 | consumer_fd = uatomic_read(&ust_consumerd64_fd); | |
251 | break; | |
252 | case 32: | |
253 | consumer_fd = uatomic_read(&ust_consumerd32_fd); | |
254 | break; | |
255 | default: | |
256 | assert(0); | |
257 | goto end; | |
258 | } | |
259 | ||
260 | socket = consumer_find_socket(consumer_fd, consumer); | |
261 | if (!socket) { | |
262 | ERR("Consumer socket fd %d not found in consumer obj %p", | |
263 | consumer_fd, consumer); | |
264 | } | |
265 | ||
266 | end: | |
267 | return socket; | |
268 | } | |
269 | ||
173af62f DG |
270 | /* |
271 | * Find a consumer_socket in a consumer_output hashtable. Read side lock must | |
272 | * be acquired before calling this function and across use of the | |
273 | * returned consumer_socket. | |
274 | */ | |
275 | struct consumer_socket *consumer_find_socket(int key, | |
276 | struct consumer_output *consumer) | |
277 | { | |
278 | struct lttng_ht_iter iter; | |
279 | struct lttng_ht_node_ulong *node; | |
280 | struct consumer_socket *socket = NULL; | |
281 | ||
282 | /* Negative keys are lookup failures */ | |
a4b92340 | 283 | if (key < 0 || consumer == NULL) { |
173af62f DG |
284 | return NULL; |
285 | } | |
286 | ||
287 | lttng_ht_lookup(consumer->socks, (void *)((unsigned long) key), | |
288 | &iter); | |
289 | node = lttng_ht_iter_get_node_ulong(&iter); | |
290 | if (node != NULL) { | |
291 | socket = caa_container_of(node, struct consumer_socket, node); | |
292 | } | |
293 | ||
294 | return socket; | |
295 | } | |
296 | ||
297 | /* | |
298 | * Allocate a new consumer_socket and return the pointer. | |
299 | */ | |
300 | struct consumer_socket *consumer_allocate_socket(int fd) | |
301 | { | |
302 | struct consumer_socket *socket = NULL; | |
303 | ||
304 | socket = zmalloc(sizeof(struct consumer_socket)); | |
305 | if (socket == NULL) { | |
306 | PERROR("zmalloc consumer socket"); | |
307 | goto error; | |
308 | } | |
309 | ||
310 | socket->fd = fd; | |
311 | lttng_ht_node_init_ulong(&socket->node, fd); | |
312 | ||
313 | error: | |
314 | return socket; | |
315 | } | |
316 | ||
317 | /* | |
318 | * Add consumer socket to consumer output object. Read side lock must be | |
319 | * acquired before calling this function. | |
320 | */ | |
321 | void consumer_add_socket(struct consumer_socket *sock, | |
322 | struct consumer_output *consumer) | |
323 | { | |
324 | assert(sock); | |
325 | assert(consumer); | |
326 | ||
327 | lttng_ht_add_unique_ulong(consumer->socks, &sock->node); | |
328 | } | |
329 | ||
330 | /* | |
331 | * Delte consumer socket to consumer output object. Read side lock must be | |
332 | * acquired before calling this function. | |
333 | */ | |
334 | void consumer_del_socket(struct consumer_socket *sock, | |
335 | struct consumer_output *consumer) | |
336 | { | |
337 | int ret; | |
338 | struct lttng_ht_iter iter; | |
339 | ||
340 | assert(sock); | |
341 | assert(consumer); | |
342 | ||
343 | iter.iter.node = &sock->node.node; | |
344 | ret = lttng_ht_del(consumer->socks, &iter); | |
345 | assert(!ret); | |
346 | } | |
347 | ||
348 | /* | |
349 | * RCU destroy call function. | |
350 | */ | |
351 | static void destroy_socket_rcu(struct rcu_head *head) | |
352 | { | |
353 | struct lttng_ht_node_ulong *node = | |
354 | caa_container_of(head, struct lttng_ht_node_ulong, head); | |
355 | struct consumer_socket *socket = | |
356 | caa_container_of(node, struct consumer_socket, node); | |
357 | ||
358 | free(socket); | |
359 | } | |
360 | ||
361 | /* | |
362 | * Destroy and free socket pointer in a call RCU. Read side lock must be | |
363 | * acquired before calling this function. | |
364 | */ | |
365 | void consumer_destroy_socket(struct consumer_socket *sock) | |
366 | { | |
367 | assert(sock); | |
368 | ||
369 | /* | |
370 | * We DO NOT close the file descriptor here since it is global to the | |
2f77fc4b DG |
371 | * session daemon and is closed only if the consumer dies or a custom |
372 | * consumer was registered, | |
173af62f | 373 | */ |
2f77fc4b DG |
374 | if (sock->registered) { |
375 | DBG3("Consumer socket was registered. Closing fd %d", sock->fd); | |
376 | lttcomm_close_unix_sock(sock->fd); | |
377 | } | |
173af62f DG |
378 | |
379 | call_rcu(&sock->node.head, destroy_socket_rcu); | |
380 | } | |
381 | ||
00e2e675 DG |
382 | /* |
383 | * Allocate and assign data to a consumer_output object. | |
384 | * | |
385 | * Return pointer to structure. | |
386 | */ | |
387 | struct consumer_output *consumer_create_output(enum consumer_dst_type type) | |
388 | { | |
389 | struct consumer_output *output = NULL; | |
390 | ||
391 | output = zmalloc(sizeof(struct consumer_output)); | |
392 | if (output == NULL) { | |
393 | PERROR("zmalloc consumer_output"); | |
394 | goto error; | |
395 | } | |
396 | ||
397 | /* By default, consumer output is enabled */ | |
398 | output->enabled = 1; | |
399 | output->type = type; | |
d88aee68 | 400 | output->net_seq_index = (uint64_t) -1ULL; |
173af62f DG |
401 | |
402 | output->socks = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG); | |
00e2e675 DG |
403 | |
404 | error: | |
405 | return output; | |
406 | } | |
407 | ||
408 | /* | |
409 | * Delete the consumer_output object from the list and free the ptr. | |
410 | */ | |
411 | void consumer_destroy_output(struct consumer_output *obj) | |
412 | { | |
413 | if (obj == NULL) { | |
414 | return; | |
415 | } | |
416 | ||
173af62f DG |
417 | if (obj->socks) { |
418 | struct lttng_ht_iter iter; | |
419 | struct consumer_socket *socket; | |
420 | ||
2f77fc4b | 421 | rcu_read_lock(); |
173af62f | 422 | cds_lfht_for_each_entry(obj->socks->ht, &iter.iter, socket, node.node) { |
2f77fc4b | 423 | consumer_del_socket(socket, obj); |
173af62f DG |
424 | consumer_destroy_socket(socket); |
425 | } | |
2f77fc4b DG |
426 | rcu_read_unlock(); |
427 | ||
428 | /* Finally destroy HT */ | |
429 | lttng_ht_destroy(obj->socks); | |
00e2e675 | 430 | } |
173af62f | 431 | |
00e2e675 DG |
432 | free(obj); |
433 | } | |
434 | ||
435 | /* | |
436 | * Copy consumer output and returned the newly allocated copy. | |
437 | */ | |
438 | struct consumer_output *consumer_copy_output(struct consumer_output *obj) | |
439 | { | |
09a90bcd | 440 | struct lttng_ht *tmp_ht_ptr; |
173af62f DG |
441 | struct lttng_ht_iter iter; |
442 | struct consumer_socket *socket, *copy_sock; | |
00e2e675 DG |
443 | struct consumer_output *output; |
444 | ||
445 | assert(obj); | |
446 | ||
447 | output = consumer_create_output(obj->type); | |
448 | if (output == NULL) { | |
449 | goto error; | |
450 | } | |
09a90bcd DG |
451 | /* Avoid losing the HT reference after the memcpy() */ |
452 | tmp_ht_ptr = output->socks; | |
00e2e675 DG |
453 | |
454 | memcpy(output, obj, sizeof(struct consumer_output)); | |
455 | ||
09a90bcd DG |
456 | /* Putting back the HT pointer and start copying socket(s). */ |
457 | output->socks = tmp_ht_ptr; | |
173af62f | 458 | |
b82c5c4d | 459 | rcu_read_lock(); |
173af62f DG |
460 | cds_lfht_for_each_entry(obj->socks->ht, &iter.iter, socket, node.node) { |
461 | /* Create new socket object. */ | |
462 | copy_sock = consumer_allocate_socket(socket->fd); | |
463 | if (copy_sock == NULL) { | |
b82c5c4d | 464 | rcu_read_unlock(); |
173af62f DG |
465 | goto malloc_error; |
466 | } | |
467 | ||
09a90bcd | 468 | copy_sock->registered = socket->registered; |
173af62f DG |
469 | copy_sock->lock = socket->lock; |
470 | consumer_add_socket(copy_sock, output); | |
471 | } | |
b82c5c4d | 472 | rcu_read_unlock(); |
173af62f | 473 | |
00e2e675 DG |
474 | error: |
475 | return output; | |
173af62f DG |
476 | |
477 | malloc_error: | |
478 | consumer_destroy_output(output); | |
479 | return NULL; | |
00e2e675 DG |
480 | } |
481 | ||
482 | /* | |
483 | * Set network URI to the consumer output object. | |
484 | * | |
ad20f474 DG |
485 | * Return 0 on success. Return 1 if the URI were equal. Else, negative value on |
486 | * error. | |
00e2e675 DG |
487 | */ |
488 | int consumer_set_network_uri(struct consumer_output *obj, | |
489 | struct lttng_uri *uri) | |
490 | { | |
491 | int ret; | |
492 | char tmp_path[PATH_MAX]; | |
493 | char hostname[HOST_NAME_MAX]; | |
494 | struct lttng_uri *dst_uri = NULL; | |
495 | ||
496 | /* Code flow error safety net. */ | |
497 | assert(obj); | |
498 | assert(uri); | |
499 | ||
500 | switch (uri->stype) { | |
501 | case LTTNG_STREAM_CONTROL: | |
502 | dst_uri = &obj->dst.net.control; | |
503 | obj->dst.net.control_isset = 1; | |
504 | if (uri->port == 0) { | |
505 | /* Assign default port. */ | |
506 | uri->port = DEFAULT_NETWORK_CONTROL_PORT; | |
a74934ba DG |
507 | } else { |
508 | if (obj->dst.net.data_isset && uri->port == | |
509 | obj->dst.net.data.port) { | |
510 | ret = -LTTNG_ERR_INVALID; | |
511 | goto error; | |
512 | } | |
00e2e675 | 513 | } |
ad20f474 | 514 | DBG3("Consumer control URI set with port %d", uri->port); |
00e2e675 DG |
515 | break; |
516 | case LTTNG_STREAM_DATA: | |
517 | dst_uri = &obj->dst.net.data; | |
518 | obj->dst.net.data_isset = 1; | |
519 | if (uri->port == 0) { | |
520 | /* Assign default port. */ | |
521 | uri->port = DEFAULT_NETWORK_DATA_PORT; | |
a74934ba DG |
522 | } else { |
523 | if (obj->dst.net.control_isset && uri->port == | |
524 | obj->dst.net.control.port) { | |
525 | ret = -LTTNG_ERR_INVALID; | |
526 | goto error; | |
527 | } | |
00e2e675 | 528 | } |
ad20f474 | 529 | DBG3("Consumer data URI set with port %d", uri->port); |
00e2e675 DG |
530 | break; |
531 | default: | |
532 | ERR("Set network uri type unknown %d", uri->stype); | |
a74934ba | 533 | ret = -LTTNG_ERR_INVALID; |
00e2e675 DG |
534 | goto error; |
535 | } | |
536 | ||
537 | ret = uri_compare(dst_uri, uri); | |
538 | if (!ret) { | |
539 | /* Same URI, don't touch it and return success. */ | |
540 | DBG3("URI network compare are the same"); | |
ad20f474 | 541 | goto equal; |
00e2e675 DG |
542 | } |
543 | ||
544 | /* URIs were not equal, replacing it. */ | |
545 | memset(dst_uri, 0, sizeof(struct lttng_uri)); | |
546 | memcpy(dst_uri, uri, sizeof(struct lttng_uri)); | |
547 | obj->type = CONSUMER_DST_NET; | |
548 | ||
549 | /* Handle subdir and add hostname in front. */ | |
550 | if (dst_uri->stype == LTTNG_STREAM_CONTROL) { | |
551 | /* Get hostname to append it in the pathname */ | |
552 | ret = gethostname(hostname, sizeof(hostname)); | |
553 | if (ret < 0) { | |
554 | PERROR("gethostname. Fallback on default localhost"); | |
555 | strncpy(hostname, "localhost", sizeof(hostname)); | |
556 | } | |
557 | hostname[sizeof(hostname) - 1] = '\0'; | |
558 | ||
559 | /* Setup consumer subdir if none present in the control URI */ | |
560 | if (strlen(dst_uri->subdir) == 0) { | |
561 | ret = snprintf(tmp_path, sizeof(tmp_path), "%s/%s", | |
562 | hostname, obj->subdir); | |
563 | } else { | |
564 | ret = snprintf(tmp_path, sizeof(tmp_path), "%s/%s", | |
565 | hostname, dst_uri->subdir); | |
566 | } | |
567 | if (ret < 0) { | |
568 | PERROR("snprintf set consumer uri subdir"); | |
a74934ba | 569 | ret = -LTTNG_ERR_NOMEM; |
00e2e675 DG |
570 | goto error; |
571 | } | |
572 | ||
573 | strncpy(obj->subdir, tmp_path, sizeof(obj->subdir)); | |
574 | DBG3("Consumer set network uri subdir path %s", tmp_path); | |
575 | } | |
576 | ||
00e2e675 | 577 | return 0; |
ad20f474 DG |
578 | equal: |
579 | return 1; | |
00e2e675 | 580 | error: |
a74934ba | 581 | return ret; |
00e2e675 DG |
582 | } |
583 | ||
584 | /* | |
585 | * Send file descriptor to consumer via sock. | |
586 | */ | |
f50f23d9 | 587 | int consumer_send_fds(struct consumer_socket *sock, int *fds, size_t nb_fd) |
00e2e675 DG |
588 | { |
589 | int ret; | |
590 | ||
591 | assert(fds); | |
f50f23d9 | 592 | assert(sock); |
00e2e675 DG |
593 | assert(nb_fd > 0); |
594 | ||
f50f23d9 | 595 | ret = lttcomm_send_fds_unix_sock(sock->fd, fds, nb_fd); |
00e2e675 | 596 | if (ret < 0) { |
3448e266 DG |
597 | /* The above call will print a PERROR on error. */ |
598 | DBG("Error when sending consumer fds on sock %d", sock->fd); | |
00e2e675 DG |
599 | goto error; |
600 | } | |
601 | ||
f50f23d9 DG |
602 | ret = consumer_recv_status_reply(sock); |
603 | ||
00e2e675 DG |
604 | error: |
605 | return ret; | |
606 | } | |
607 | ||
ffe60014 DG |
608 | /* |
609 | * Consumer send communication message structure to consumer. | |
610 | */ | |
611 | int consumer_send_msg(struct consumer_socket *sock, | |
612 | struct lttcomm_consumer_msg *msg) | |
613 | { | |
614 | int ret; | |
615 | ||
616 | assert(msg); | |
617 | assert(sock); | |
618 | assert(sock->fd >= 0); | |
619 | ||
620 | ret = lttcomm_send_unix_sock(sock->fd, msg, | |
621 | sizeof(struct lttcomm_consumer_msg)); | |
622 | if (ret < 0) { | |
623 | /* The above call will print a PERROR on error. */ | |
624 | DBG("Error when sending consumer channel on sock %d", sock->fd); | |
625 | goto error; | |
626 | } | |
627 | ||
628 | ret = consumer_recv_status_reply(sock); | |
629 | ||
630 | error: | |
631 | return ret; | |
632 | } | |
633 | ||
00e2e675 DG |
634 | /* |
635 | * Consumer send channel communication message structure to consumer. | |
636 | */ | |
f50f23d9 DG |
637 | int consumer_send_channel(struct consumer_socket *sock, |
638 | struct lttcomm_consumer_msg *msg) | |
00e2e675 DG |
639 | { |
640 | int ret; | |
641 | ||
642 | assert(msg); | |
f50f23d9 DG |
643 | assert(sock); |
644 | assert(sock->fd >= 0); | |
00e2e675 | 645 | |
f50f23d9 | 646 | ret = lttcomm_send_unix_sock(sock->fd, msg, |
00e2e675 DG |
647 | sizeof(struct lttcomm_consumer_msg)); |
648 | if (ret < 0) { | |
3448e266 DG |
649 | /* The above call will print a PERROR on error. */ |
650 | DBG("Error when sending consumer channel on sock %d", sock->fd); | |
00e2e675 DG |
651 | goto error; |
652 | } | |
653 | ||
f50f23d9 DG |
654 | ret = consumer_recv_status_reply(sock); |
655 | ||
00e2e675 DG |
656 | error: |
657 | return ret; | |
658 | } | |
659 | ||
ffe60014 DG |
660 | /* |
661 | * Populate the given consumer msg structure with the ask_channel command | |
662 | * information. | |
663 | */ | |
664 | void consumer_init_ask_channel_comm_msg(struct lttcomm_consumer_msg *msg, | |
665 | uint64_t subbuf_size, | |
666 | uint64_t num_subbuf, | |
667 | int overwrite, | |
668 | unsigned int switch_timer_interval, | |
669 | unsigned int read_timer_interval, | |
670 | int output, | |
671 | int type, | |
672 | uint64_t session_id, | |
673 | const char *pathname, | |
674 | const char *name, | |
675 | uid_t uid, | |
676 | gid_t gid, | |
d88aee68 DG |
677 | uint64_t relayd_id, |
678 | uint64_t key, | |
7972aab2 | 679 | unsigned char *uuid, |
1624d5b7 JD |
680 | uint32_t chan_id, |
681 | uint64_t tracefile_size, | |
682 | uint64_t tracefile_count) | |
ffe60014 DG |
683 | { |
684 | assert(msg); | |
685 | ||
686 | /* Zeroed structure */ | |
687 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
688 | ||
689 | msg->cmd_type = LTTNG_CONSUMER_ASK_CHANNEL_CREATION; | |
690 | msg->u.ask_channel.subbuf_size = subbuf_size; | |
691 | msg->u.ask_channel.num_subbuf = num_subbuf ; | |
692 | msg->u.ask_channel.overwrite = overwrite; | |
693 | msg->u.ask_channel.switch_timer_interval = switch_timer_interval; | |
694 | msg->u.ask_channel.read_timer_interval = read_timer_interval; | |
695 | msg->u.ask_channel.output = output; | |
696 | msg->u.ask_channel.type = type; | |
697 | msg->u.ask_channel.session_id = session_id; | |
698 | msg->u.ask_channel.uid = uid; | |
699 | msg->u.ask_channel.gid = gid; | |
700 | msg->u.ask_channel.relayd_id = relayd_id; | |
701 | msg->u.ask_channel.key = key; | |
7972aab2 | 702 | msg->u.ask_channel.chan_id = chan_id; |
1624d5b7 JD |
703 | msg->u.ask_channel.tracefile_size = tracefile_size; |
704 | msg->u.ask_channel.tracefile_count = tracefile_count; | |
ffe60014 DG |
705 | |
706 | memcpy(msg->u.ask_channel.uuid, uuid, sizeof(msg->u.ask_channel.uuid)); | |
707 | ||
708 | strncpy(msg->u.ask_channel.pathname, pathname, | |
709 | sizeof(msg->u.ask_channel.pathname)); | |
710 | msg->u.ask_channel.pathname[sizeof(msg->u.ask_channel.pathname)-1] = '\0'; | |
711 | ||
712 | strncpy(msg->u.ask_channel.name, name, sizeof(msg->u.ask_channel.name)); | |
713 | msg->u.ask_channel.name[sizeof(msg->u.ask_channel.name) - 1] = '\0'; | |
714 | } | |
715 | ||
00e2e675 DG |
716 | /* |
717 | * Init channel communication message structure. | |
718 | */ | |
719 | void consumer_init_channel_comm_msg(struct lttcomm_consumer_msg *msg, | |
720 | enum lttng_consumer_command cmd, | |
d88aee68 | 721 | uint64_t channel_key, |
ffe60014 DG |
722 | uint64_t session_id, |
723 | const char *pathname, | |
724 | uid_t uid, | |
725 | gid_t gid, | |
d88aee68 | 726 | uint64_t relayd_id, |
c30aaa51 | 727 | const char *name, |
ffe60014 DG |
728 | unsigned int nb_init_streams, |
729 | enum lttng_event_output output, | |
1624d5b7 JD |
730 | int type, |
731 | uint64_t tracefile_size, | |
732 | uint64_t tracefile_count) | |
00e2e675 DG |
733 | { |
734 | assert(msg); | |
735 | ||
00e2e675 DG |
736 | /* Zeroed structure */ |
737 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
738 | ||
739 | /* Send channel */ | |
740 | msg->cmd_type = cmd; | |
741 | msg->u.channel.channel_key = channel_key; | |
ffe60014 DG |
742 | msg->u.channel.session_id = session_id; |
743 | msg->u.channel.uid = uid; | |
744 | msg->u.channel.gid = gid; | |
745 | msg->u.channel.relayd_id = relayd_id; | |
c30aaa51 | 746 | msg->u.channel.nb_init_streams = nb_init_streams; |
ffe60014 DG |
747 | msg->u.channel.output = output; |
748 | msg->u.channel.type = type; | |
1624d5b7 JD |
749 | msg->u.channel.tracefile_size = tracefile_size; |
750 | msg->u.channel.tracefile_count = tracefile_count; | |
ffe60014 DG |
751 | |
752 | strncpy(msg->u.channel.pathname, pathname, | |
753 | sizeof(msg->u.channel.pathname)); | |
754 | msg->u.channel.pathname[sizeof(msg->u.channel.pathname) - 1] = '\0'; | |
755 | ||
756 | strncpy(msg->u.channel.name, name, sizeof(msg->u.channel.name)); | |
757 | msg->u.channel.name[sizeof(msg->u.channel.name) - 1] = '\0'; | |
00e2e675 DG |
758 | } |
759 | ||
760 | /* | |
761 | * Init stream communication message structure. | |
762 | */ | |
763 | void consumer_init_stream_comm_msg(struct lttcomm_consumer_msg *msg, | |
764 | enum lttng_consumer_command cmd, | |
d88aee68 DG |
765 | uint64_t channel_key, |
766 | uint64_t stream_key, | |
ffe60014 | 767 | int cpu) |
00e2e675 DG |
768 | { |
769 | assert(msg); | |
770 | ||
771 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
772 | ||
00e2e675 DG |
773 | msg->cmd_type = cmd; |
774 | msg->u.stream.channel_key = channel_key; | |
775 | msg->u.stream.stream_key = stream_key; | |
ffe60014 | 776 | msg->u.stream.cpu = cpu; |
00e2e675 DG |
777 | } |
778 | ||
779 | /* | |
780 | * Send stream communication structure to the consumer. | |
781 | */ | |
f50f23d9 DG |
782 | int consumer_send_stream(struct consumer_socket *sock, |
783 | struct consumer_output *dst, struct lttcomm_consumer_msg *msg, | |
784 | int *fds, size_t nb_fd) | |
00e2e675 DG |
785 | { |
786 | int ret; | |
787 | ||
788 | assert(msg); | |
789 | assert(dst); | |
f50f23d9 | 790 | assert(sock); |
ffe60014 | 791 | assert(fds); |
00e2e675 DG |
792 | |
793 | /* Send on socket */ | |
f50f23d9 | 794 | ret = lttcomm_send_unix_sock(sock->fd, msg, |
00e2e675 DG |
795 | sizeof(struct lttcomm_consumer_msg)); |
796 | if (ret < 0) { | |
3448e266 DG |
797 | /* The above call will print a PERROR on error. */ |
798 | DBG("Error when sending consumer stream on sock %d", sock->fd); | |
00e2e675 DG |
799 | goto error; |
800 | } | |
801 | ||
f50f23d9 DG |
802 | ret = consumer_recv_status_reply(sock); |
803 | if (ret < 0) { | |
804 | goto error; | |
805 | } | |
806 | ||
00e2e675 DG |
807 | ret = consumer_send_fds(sock, fds, nb_fd); |
808 | if (ret < 0) { | |
809 | goto error; | |
810 | } | |
811 | ||
812 | error: | |
813 | return ret; | |
814 | } | |
37278a1e DG |
815 | |
816 | /* | |
817 | * Send relayd socket to consumer associated with a session name. | |
818 | * | |
819 | * On success return positive value. On error, negative value. | |
820 | */ | |
f50f23d9 | 821 | int consumer_send_relayd_socket(struct consumer_socket *consumer_sock, |
6151a90f | 822 | struct lttcomm_relayd_sock *rsock, struct consumer_output *consumer, |
d88aee68 | 823 | enum lttng_stream_type type, uint64_t session_id) |
37278a1e DG |
824 | { |
825 | int ret; | |
826 | struct lttcomm_consumer_msg msg; | |
827 | ||
828 | /* Code flow error. Safety net. */ | |
6151a90f | 829 | assert(rsock); |
37278a1e | 830 | assert(consumer); |
f50f23d9 | 831 | assert(consumer_sock); |
37278a1e DG |
832 | |
833 | /* Bail out if consumer is disabled */ | |
834 | if (!consumer->enabled) { | |
f73fabfd | 835 | ret = LTTNG_OK; |
37278a1e DG |
836 | goto error; |
837 | } | |
838 | ||
839 | msg.cmd_type = LTTNG_CONSUMER_ADD_RELAYD_SOCKET; | |
840 | /* | |
841 | * Assign network consumer output index using the temporary consumer since | |
842 | * this call should only be made from within a set_consumer_uri() function | |
843 | * call in the session daemon. | |
844 | */ | |
845 | msg.u.relayd_sock.net_index = consumer->net_seq_index; | |
846 | msg.u.relayd_sock.type = type; | |
46e6455f | 847 | msg.u.relayd_sock.session_id = session_id; |
6151a90f | 848 | memcpy(&msg.u.relayd_sock.sock, rsock, sizeof(msg.u.relayd_sock.sock)); |
37278a1e | 849 | |
f50f23d9 DG |
850 | DBG3("Sending relayd sock info to consumer on %d", consumer_sock->fd); |
851 | ret = lttcomm_send_unix_sock(consumer_sock->fd, &msg, sizeof(msg)); | |
37278a1e | 852 | if (ret < 0) { |
3448e266 | 853 | /* The above call will print a PERROR on error. */ |
6151a90f | 854 | DBG("Error when sending relayd sockets on sock %d", rsock->sock.fd); |
37278a1e DG |
855 | goto error; |
856 | } | |
857 | ||
f50f23d9 DG |
858 | ret = consumer_recv_status_reply(consumer_sock); |
859 | if (ret < 0) { | |
860 | goto error; | |
861 | } | |
862 | ||
37278a1e | 863 | DBG3("Sending relayd socket file descriptor to consumer"); |
6151a90f | 864 | ret = consumer_send_fds(consumer_sock, &rsock->sock.fd, 1); |
37278a1e DG |
865 | if (ret < 0) { |
866 | goto error; | |
867 | } | |
868 | ||
869 | DBG2("Consumer relayd socket sent"); | |
870 | ||
871 | error: | |
872 | return ret; | |
873 | } | |
173af62f DG |
874 | |
875 | /* | |
2f77fc4b DG |
876 | * Set consumer subdirectory using the session name and a generated datetime if |
877 | * needed. This is appended to the current subdirectory. | |
173af62f | 878 | */ |
2f77fc4b DG |
879 | int consumer_set_subdir(struct consumer_output *consumer, |
880 | const char *session_name) | |
173af62f | 881 | { |
2f77fc4b DG |
882 | int ret = 0; |
883 | unsigned int have_default_name = 0; | |
884 | char datetime[16], tmp_path[PATH_MAX]; | |
885 | time_t rawtime; | |
886 | struct tm *timeinfo; | |
173af62f DG |
887 | |
888 | assert(consumer); | |
2f77fc4b DG |
889 | assert(session_name); |
890 | ||
891 | memset(tmp_path, 0, sizeof(tmp_path)); | |
892 | ||
893 | /* Flag if we have a default session. */ | |
894 | if (strncmp(session_name, DEFAULT_SESSION_NAME "-", | |
895 | strlen(DEFAULT_SESSION_NAME) + 1) == 0) { | |
896 | have_default_name = 1; | |
897 | } else { | |
898 | /* Get date and time for session path */ | |
899 | time(&rawtime); | |
900 | timeinfo = localtime(&rawtime); | |
901 | strftime(datetime, sizeof(datetime), "%Y%m%d-%H%M%S", timeinfo); | |
173af62f DG |
902 | } |
903 | ||
2f77fc4b DG |
904 | if (have_default_name) { |
905 | ret = snprintf(tmp_path, sizeof(tmp_path), | |
906 | "%s/%s", consumer->subdir, session_name); | |
907 | } else { | |
908 | ret = snprintf(tmp_path, sizeof(tmp_path), | |
909 | "%s/%s-%s/", consumer->subdir, session_name, datetime); | |
910 | } | |
173af62f | 911 | if (ret < 0) { |
2f77fc4b | 912 | PERROR("snprintf session name date"); |
173af62f DG |
913 | goto error; |
914 | } | |
915 | ||
2f77fc4b DG |
916 | strncpy(consumer->subdir, tmp_path, sizeof(consumer->subdir)); |
917 | DBG2("Consumer subdir set to %s", consumer->subdir); | |
173af62f DG |
918 | |
919 | error: | |
920 | return ret; | |
921 | } | |
806e2684 DG |
922 | |
923 | /* | |
6d805429 | 924 | * Ask the consumer if the data is ready to read (NOT pending) for the specific |
806e2684 DG |
925 | * session id. |
926 | * | |
927 | * This function has a different behavior with the consumer i.e. that it waits | |
6d805429 | 928 | * for a reply from the consumer if yes or no the data is pending. |
806e2684 | 929 | */ |
d88aee68 | 930 | int consumer_is_data_pending(uint64_t session_id, |
806e2684 DG |
931 | struct consumer_output *consumer) |
932 | { | |
933 | int ret; | |
6d805429 | 934 | int32_t ret_code = 0; /* Default is that the data is NOT pending */ |
806e2684 DG |
935 | struct consumer_socket *socket; |
936 | struct lttng_ht_iter iter; | |
937 | struct lttcomm_consumer_msg msg; | |
938 | ||
939 | assert(consumer); | |
940 | ||
6d805429 | 941 | msg.cmd_type = LTTNG_CONSUMER_DATA_PENDING; |
806e2684 | 942 | |
d88aee68 | 943 | msg.u.data_pending.session_id = session_id; |
806e2684 | 944 | |
d88aee68 | 945 | DBG3("Consumer data pending for id %" PRIu64, session_id); |
806e2684 | 946 | |
c8f59ee5 | 947 | /* Send command for each consumer */ |
b82c5c4d | 948 | rcu_read_lock(); |
806e2684 DG |
949 | cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket, |
950 | node.node) { | |
951 | /* Code flow error */ | |
952 | assert(socket->fd >= 0); | |
953 | ||
954 | pthread_mutex_lock(socket->lock); | |
955 | ||
956 | ret = lttcomm_send_unix_sock(socket->fd, &msg, sizeof(msg)); | |
957 | if (ret < 0) { | |
3448e266 DG |
958 | /* The above call will print a PERROR on error. */ |
959 | DBG("Error on consumer is data pending on sock %d", socket->fd); | |
806e2684 | 960 | pthread_mutex_unlock(socket->lock); |
b82c5c4d | 961 | goto error_unlock; |
806e2684 DG |
962 | } |
963 | ||
f50f23d9 DG |
964 | /* |
965 | * No need for a recv reply status because the answer to the command is | |
966 | * the reply status message. | |
967 | */ | |
968 | ||
806e2684 | 969 | ret = lttcomm_recv_unix_sock(socket->fd, &ret_code, sizeof(ret_code)); |
a6cd2b97 DG |
970 | if (ret <= 0) { |
971 | if (ret == 0) { | |
972 | /* Orderly shutdown. Don't return 0 which means success. */ | |
973 | ret = -1; | |
974 | } | |
3448e266 DG |
975 | /* The above call will print a PERROR on error. */ |
976 | DBG("Error on recv consumer is data pending on sock %d", socket->fd); | |
806e2684 | 977 | pthread_mutex_unlock(socket->lock); |
b82c5c4d | 978 | goto error_unlock; |
806e2684 DG |
979 | } |
980 | ||
981 | pthread_mutex_unlock(socket->lock); | |
982 | ||
6d805429 | 983 | if (ret_code == 1) { |
806e2684 DG |
984 | break; |
985 | } | |
986 | } | |
b82c5c4d | 987 | rcu_read_unlock(); |
806e2684 | 988 | |
d88aee68 DG |
989 | DBG("Consumer data is %s pending for session id %" PRIu64, |
990 | ret_code == 1 ? "" : "NOT", session_id); | |
806e2684 DG |
991 | return ret_code; |
992 | ||
b82c5c4d DG |
993 | error_unlock: |
994 | rcu_read_unlock(); | |
806e2684 DG |
995 | return -1; |
996 | } | |
7972aab2 DG |
997 | |
998 | /* | |
999 | * Send a flush command to consumer using the given channel key. | |
1000 | * | |
1001 | * Return 0 on success else a negative value. | |
1002 | */ | |
1003 | int consumer_flush_channel(struct consumer_socket *socket, uint64_t key) | |
1004 | { | |
1005 | int ret; | |
1006 | struct lttcomm_consumer_msg msg; | |
1007 | ||
1008 | assert(socket); | |
1009 | assert(socket->fd >= 0); | |
1010 | ||
1011 | DBG2("Consumer flush channel key %" PRIu64, key); | |
1012 | ||
1013 | msg.cmd_type = LTTNG_CONSUMER_FLUSH_CHANNEL; | |
1014 | msg.u.flush_channel.key = key; | |
1015 | ||
1016 | pthread_mutex_lock(socket->lock); | |
1017 | health_code_update(); | |
1018 | ||
1019 | ret = consumer_send_msg(socket, &msg); | |
1020 | if (ret < 0) { | |
1021 | goto end; | |
1022 | } | |
1023 | ||
1024 | end: | |
1025 | health_code_update(); | |
1026 | pthread_mutex_unlock(socket->lock); | |
1027 | return ret; | |
1028 | } | |
1029 | ||
1030 | /* | |
1031 | * Send a close metdata command to consumer using the given channel key. | |
1032 | * | |
1033 | * Return 0 on success else a negative value. | |
1034 | */ | |
1035 | int consumer_close_metadata(struct consumer_socket *socket, | |
1036 | uint64_t metadata_key) | |
1037 | { | |
1038 | int ret; | |
1039 | struct lttcomm_consumer_msg msg; | |
1040 | ||
1041 | assert(socket); | |
1042 | assert(socket->fd >= 0); | |
1043 | ||
1044 | DBG2("Consumer close metadata channel key %" PRIu64, metadata_key); | |
1045 | ||
1046 | msg.cmd_type = LTTNG_CONSUMER_CLOSE_METADATA; | |
1047 | msg.u.close_metadata.key = metadata_key; | |
1048 | ||
1049 | pthread_mutex_lock(socket->lock); | |
1050 | health_code_update(); | |
1051 | ||
1052 | ret = consumer_send_msg(socket, &msg); | |
1053 | if (ret < 0) { | |
1054 | goto end; | |
1055 | } | |
1056 | ||
1057 | end: | |
1058 | health_code_update(); | |
1059 | pthread_mutex_unlock(socket->lock); | |
1060 | return ret; | |
1061 | } | |
1062 | ||
1063 | /* | |
1064 | * Send a setup metdata command to consumer using the given channel key. | |
1065 | * | |
1066 | * Return 0 on success else a negative value. | |
1067 | */ | |
1068 | int consumer_setup_metadata(struct consumer_socket *socket, | |
1069 | uint64_t metadata_key) | |
1070 | { | |
1071 | int ret; | |
1072 | struct lttcomm_consumer_msg msg; | |
1073 | ||
1074 | assert(socket); | |
1075 | assert(socket->fd >= 0); | |
1076 | ||
1077 | DBG2("Consumer setup metadata channel key %" PRIu64, metadata_key); | |
1078 | ||
1079 | msg.cmd_type = LTTNG_CONSUMER_SETUP_METADATA; | |
1080 | msg.u.setup_metadata.key = metadata_key; | |
1081 | ||
1082 | pthread_mutex_lock(socket->lock); | |
1083 | health_code_update(); | |
1084 | ||
1085 | ret = consumer_send_msg(socket, &msg); | |
1086 | if (ret < 0) { | |
1087 | goto end; | |
1088 | } | |
1089 | ||
1090 | end: | |
1091 | health_code_update(); | |
1092 | pthread_mutex_unlock(socket->lock); | |
1093 | return ret; | |
1094 | } | |
1095 | ||
1096 | /* | |
331744e3 | 1097 | * Send metadata string to consumer. Socket lock MUST be acquired. |
7972aab2 DG |
1098 | * |
1099 | * Return 0 on success else a negative value. | |
1100 | */ | |
1101 | int consumer_push_metadata(struct consumer_socket *socket, | |
1102 | uint64_t metadata_key, char *metadata_str, size_t len, | |
1103 | size_t target_offset) | |
1104 | { | |
1105 | int ret; | |
1106 | struct lttcomm_consumer_msg msg; | |
1107 | ||
1108 | assert(socket); | |
1109 | assert(socket->fd >= 0); | |
1110 | ||
1111 | DBG2("Consumer push metadata to consumer socket %d", socket->fd); | |
1112 | ||
1113 | msg.cmd_type = LTTNG_CONSUMER_PUSH_METADATA; | |
1114 | msg.u.push_metadata.key = metadata_key; | |
1115 | msg.u.push_metadata.target_offset = target_offset; | |
1116 | msg.u.push_metadata.len = len; | |
1117 | ||
7972aab2 DG |
1118 | health_code_update(); |
1119 | ret = consumer_send_msg(socket, &msg); | |
331744e3 | 1120 | if (ret < 0 || len == 0) { |
7972aab2 DG |
1121 | goto end; |
1122 | } | |
1123 | ||
1124 | DBG3("Consumer pushing metadata on sock %d of len %lu", socket->fd, len); | |
1125 | ||
1126 | ret = lttcomm_send_unix_sock(socket->fd, metadata_str, len); | |
1127 | if (ret < 0) { | |
1128 | goto end; | |
1129 | } | |
1130 | ||
1131 | health_code_update(); | |
1132 | ret = consumer_recv_status_reply(socket); | |
1133 | if (ret < 0) { | |
1134 | goto end; | |
1135 | } | |
1136 | ||
1137 | end: | |
1138 | health_code_update(); | |
7972aab2 DG |
1139 | return ret; |
1140 | } |