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 | |
6c1c0768 | 19 | #define _LGPL_SOURCE |
00e2e675 DG |
20 | #include <assert.h> |
21 | #include <stdio.h> | |
22 | #include <stdlib.h> | |
23 | #include <string.h> | |
24 | #include <sys/stat.h> | |
25 | #include <sys/types.h> | |
26 | #include <unistd.h> | |
d88aee68 | 27 | #include <inttypes.h> |
00e2e675 DG |
28 | |
29 | #include <common/common.h> | |
30 | #include <common/defaults.h> | |
31 | #include <common/uri.h> | |
d3e2ba59 | 32 | #include <common/relayd/relayd.h> |
00e2e675 DG |
33 | |
34 | #include "consumer.h" | |
8782cc74 | 35 | #include "health-sessiond.h" |
7972aab2 | 36 | #include "ust-app.h" |
0b2dc8df | 37 | #include "utils.h" |
00e2e675 | 38 | |
52898cb1 DG |
39 | /* |
40 | * Send a data payload using a given consumer socket of size len. | |
41 | * | |
42 | * The consumer socket lock MUST be acquired before calling this since this | |
43 | * function can change the fd value. | |
44 | * | |
45 | * Return 0 on success else a negative value on error. | |
46 | */ | |
47 | int consumer_socket_send(struct consumer_socket *socket, void *msg, size_t len) | |
48 | { | |
49 | int fd; | |
50 | ssize_t size; | |
51 | ||
52 | assert(socket); | |
9363801e | 53 | assert(socket->fd_ptr); |
52898cb1 DG |
54 | assert(msg); |
55 | ||
56 | /* Consumer socket is invalid. Stopping. */ | |
9363801e | 57 | fd = *socket->fd_ptr; |
52898cb1 DG |
58 | if (fd < 0) { |
59 | goto error; | |
60 | } | |
61 | ||
62 | size = lttcomm_send_unix_sock(fd, msg, len); | |
63 | if (size < 0) { | |
64 | /* The above call will print a PERROR on error. */ | |
65 | DBG("Error when sending data to consumer on sock %d", fd); | |
66 | /* | |
92db7cdc DG |
67 | * At this point, the socket is not usable anymore thus closing it and |
68 | * setting the file descriptor to -1 so it is not reused. | |
52898cb1 DG |
69 | */ |
70 | ||
71 | /* This call will PERROR on error. */ | |
72 | (void) lttcomm_close_unix_sock(fd); | |
9363801e | 73 | *socket->fd_ptr = -1; |
52898cb1 DG |
74 | goto error; |
75 | } | |
76 | ||
77 | return 0; | |
78 | ||
79 | error: | |
80 | return -1; | |
81 | } | |
82 | ||
83 | /* | |
84 | * Receive a data payload using a given consumer socket of size len. | |
85 | * | |
86 | * The consumer socket lock MUST be acquired before calling this since this | |
87 | * function can change the fd value. | |
88 | * | |
89 | * Return 0 on success else a negative value on error. | |
90 | */ | |
91 | int consumer_socket_recv(struct consumer_socket *socket, void *msg, size_t len) | |
92 | { | |
93 | int fd; | |
94 | ssize_t size; | |
95 | ||
96 | assert(socket); | |
9363801e | 97 | assert(socket->fd_ptr); |
52898cb1 DG |
98 | assert(msg); |
99 | ||
100 | /* Consumer socket is invalid. Stopping. */ | |
9363801e | 101 | fd = *socket->fd_ptr; |
52898cb1 DG |
102 | if (fd < 0) { |
103 | goto error; | |
104 | } | |
105 | ||
106 | size = lttcomm_recv_unix_sock(fd, msg, len); | |
107 | if (size <= 0) { | |
108 | /* The above call will print a PERROR on error. */ | |
109 | DBG("Error when receiving data from the consumer socket %d", fd); | |
110 | /* | |
92db7cdc DG |
111 | * At this point, the socket is not usable anymore thus closing it and |
112 | * setting the file descriptor to -1 so it is not reused. | |
52898cb1 DG |
113 | */ |
114 | ||
115 | /* This call will PERROR on error. */ | |
116 | (void) lttcomm_close_unix_sock(fd); | |
9363801e | 117 | *socket->fd_ptr = -1; |
52898cb1 DG |
118 | goto error; |
119 | } | |
120 | ||
121 | return 0; | |
122 | ||
123 | error: | |
124 | return -1; | |
125 | } | |
126 | ||
f50f23d9 DG |
127 | /* |
128 | * Receive a reply command status message from the consumer. Consumer socket | |
129 | * lock MUST be acquired before calling this function. | |
130 | * | |
131 | * Return 0 on success, -1 on recv error or a negative lttng error code which | |
132 | * was possibly returned by the consumer. | |
133 | */ | |
134 | int consumer_recv_status_reply(struct consumer_socket *sock) | |
135 | { | |
136 | int ret; | |
137 | struct lttcomm_consumer_status_msg reply; | |
138 | ||
139 | assert(sock); | |
140 | ||
52898cb1 DG |
141 | ret = consumer_socket_recv(sock, &reply, sizeof(reply)); |
142 | if (ret < 0) { | |
f50f23d9 DG |
143 | goto end; |
144 | } | |
145 | ||
0c759fc9 | 146 | if (reply.ret_code == LTTCOMM_CONSUMERD_SUCCESS) { |
f50f23d9 DG |
147 | /* All good. */ |
148 | ret = 0; | |
149 | } else { | |
150 | ret = -reply.ret_code; | |
ffe60014 | 151 | DBG("Consumer ret code %d", ret); |
f50f23d9 DG |
152 | } |
153 | ||
154 | end: | |
155 | return ret; | |
156 | } | |
157 | ||
ffe60014 DG |
158 | /* |
159 | * Once the ASK_CHANNEL command is sent to the consumer, the channel | |
160 | * information are sent back. This call receives that data and populates key | |
161 | * and stream_count. | |
162 | * | |
163 | * On success return 0 and both key and stream_count are set. On error, a | |
164 | * negative value is sent back and both parameters are untouched. | |
165 | */ | |
166 | int consumer_recv_status_channel(struct consumer_socket *sock, | |
d88aee68 | 167 | uint64_t *key, unsigned int *stream_count) |
ffe60014 DG |
168 | { |
169 | int ret; | |
170 | struct lttcomm_consumer_status_channel reply; | |
171 | ||
172 | assert(sock); | |
173 | assert(stream_count); | |
174 | assert(key); | |
175 | ||
52898cb1 DG |
176 | ret = consumer_socket_recv(sock, &reply, sizeof(reply)); |
177 | if (ret < 0) { | |
ffe60014 DG |
178 | goto end; |
179 | } | |
180 | ||
181 | /* An error is possible so don't touch the key and stream_count. */ | |
0c759fc9 | 182 | if (reply.ret_code != LTTCOMM_CONSUMERD_SUCCESS) { |
ffe60014 DG |
183 | ret = -1; |
184 | goto end; | |
185 | } | |
186 | ||
187 | *key = reply.key; | |
188 | *stream_count = reply.stream_count; | |
0c759fc9 | 189 | ret = 0; |
ffe60014 DG |
190 | |
191 | end: | |
192 | return ret; | |
193 | } | |
194 | ||
2f77fc4b DG |
195 | /* |
196 | * Send destroy relayd command to consumer. | |
197 | * | |
198 | * On success return positive value. On error, negative value. | |
199 | */ | |
200 | int consumer_send_destroy_relayd(struct consumer_socket *sock, | |
201 | struct consumer_output *consumer) | |
202 | { | |
203 | int ret; | |
204 | struct lttcomm_consumer_msg msg; | |
205 | ||
206 | assert(consumer); | |
207 | assert(sock); | |
208 | ||
9363801e | 209 | DBG2("Sending destroy relayd command to consumer sock %d", *sock->fd_ptr); |
2f77fc4b | 210 | |
53efb85a | 211 | memset(&msg, 0, sizeof(msg)); |
2f77fc4b DG |
212 | msg.cmd_type = LTTNG_CONSUMER_DESTROY_RELAYD; |
213 | msg.u.destroy_relayd.net_seq_idx = consumer->net_seq_index; | |
214 | ||
215 | pthread_mutex_lock(sock->lock); | |
52898cb1 | 216 | ret = consumer_socket_send(sock, &msg, sizeof(msg)); |
2f77fc4b | 217 | if (ret < 0) { |
52898cb1 | 218 | goto error; |
2f77fc4b DG |
219 | } |
220 | ||
f50f23d9 DG |
221 | /* Don't check the return value. The caller will do it. */ |
222 | ret = consumer_recv_status_reply(sock); | |
223 | ||
2f77fc4b DG |
224 | DBG2("Consumer send destroy relayd command done"); |
225 | ||
226 | error: | |
52898cb1 | 227 | pthread_mutex_unlock(sock->lock); |
2f77fc4b DG |
228 | return ret; |
229 | } | |
230 | ||
231 | /* | |
232 | * For each consumer socket in the consumer output object, send a destroy | |
233 | * relayd command. | |
234 | */ | |
235 | void consumer_output_send_destroy_relayd(struct consumer_output *consumer) | |
236 | { | |
2f77fc4b DG |
237 | struct lttng_ht_iter iter; |
238 | struct consumer_socket *socket; | |
239 | ||
240 | assert(consumer); | |
241 | ||
242 | /* Destroy any relayd connection */ | |
6dc3064a | 243 | if (consumer->type == CONSUMER_DST_NET) { |
2f77fc4b DG |
244 | rcu_read_lock(); |
245 | cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket, | |
246 | node.node) { | |
c617c0c6 MD |
247 | int ret; |
248 | ||
2f77fc4b DG |
249 | /* Send destroy relayd command */ |
250 | ret = consumer_send_destroy_relayd(socket, consumer); | |
251 | if (ret < 0) { | |
c5c45efa | 252 | DBG("Unable to send destroy relayd command to consumer"); |
2f77fc4b DG |
253 | /* Continue since we MUST delete everything at this point. */ |
254 | } | |
255 | } | |
256 | rcu_read_unlock(); | |
257 | } | |
258 | } | |
259 | ||
a4b92340 DG |
260 | /* |
261 | * From a consumer_data structure, allocate and add a consumer socket to the | |
262 | * consumer output. | |
263 | * | |
264 | * Return 0 on success, else negative value on error | |
265 | */ | |
266 | int consumer_create_socket(struct consumer_data *data, | |
267 | struct consumer_output *output) | |
268 | { | |
269 | int ret = 0; | |
270 | struct consumer_socket *socket; | |
271 | ||
272 | assert(data); | |
273 | ||
274 | if (output == NULL || data->cmd_sock < 0) { | |
275 | /* | |
276 | * Not an error. Possible there is simply not spawned consumer or it's | |
277 | * disabled for the tracing session asking the socket. | |
278 | */ | |
279 | goto error; | |
280 | } | |
281 | ||
282 | rcu_read_lock(); | |
283 | socket = consumer_find_socket(data->cmd_sock, output); | |
284 | rcu_read_unlock(); | |
285 | if (socket == NULL) { | |
4ce514c4 | 286 | socket = consumer_allocate_socket(&data->cmd_sock); |
a4b92340 DG |
287 | if (socket == NULL) { |
288 | ret = -1; | |
289 | goto error; | |
290 | } | |
291 | ||
2f77fc4b | 292 | socket->registered = 0; |
a4b92340 DG |
293 | socket->lock = &data->lock; |
294 | rcu_read_lock(); | |
295 | consumer_add_socket(socket, output); | |
296 | rcu_read_unlock(); | |
297 | } | |
298 | ||
6dc3064a DG |
299 | socket->type = data->type; |
300 | ||
a4b92340 DG |
301 | DBG3("Consumer socket created (fd: %d) and added to output", |
302 | data->cmd_sock); | |
303 | ||
304 | error: | |
305 | return ret; | |
306 | } | |
307 | ||
7972aab2 DG |
308 | /* |
309 | * Return the consumer socket from the given consumer output with the right | |
310 | * bitness. On error, returns NULL. | |
311 | * | |
312 | * The caller MUST acquire a rcu read side lock and keep it until the socket | |
313 | * object reference is not needed anymore. | |
314 | */ | |
315 | struct consumer_socket *consumer_find_socket_by_bitness(int bits, | |
316 | struct consumer_output *consumer) | |
317 | { | |
318 | int consumer_fd; | |
319 | struct consumer_socket *socket = NULL; | |
320 | ||
321 | switch (bits) { | |
322 | case 64: | |
323 | consumer_fd = uatomic_read(&ust_consumerd64_fd); | |
324 | break; | |
325 | case 32: | |
326 | consumer_fd = uatomic_read(&ust_consumerd32_fd); | |
327 | break; | |
328 | default: | |
329 | assert(0); | |
330 | goto end; | |
331 | } | |
332 | ||
333 | socket = consumer_find_socket(consumer_fd, consumer); | |
334 | if (!socket) { | |
335 | ERR("Consumer socket fd %d not found in consumer obj %p", | |
336 | consumer_fd, consumer); | |
337 | } | |
338 | ||
339 | end: | |
340 | return socket; | |
341 | } | |
342 | ||
173af62f DG |
343 | /* |
344 | * Find a consumer_socket in a consumer_output hashtable. Read side lock must | |
345 | * be acquired before calling this function and across use of the | |
346 | * returned consumer_socket. | |
347 | */ | |
348 | struct consumer_socket *consumer_find_socket(int key, | |
349 | struct consumer_output *consumer) | |
350 | { | |
351 | struct lttng_ht_iter iter; | |
352 | struct lttng_ht_node_ulong *node; | |
353 | struct consumer_socket *socket = NULL; | |
354 | ||
355 | /* Negative keys are lookup failures */ | |
a4b92340 | 356 | if (key < 0 || consumer == NULL) { |
173af62f DG |
357 | return NULL; |
358 | } | |
359 | ||
360 | lttng_ht_lookup(consumer->socks, (void *)((unsigned long) key), | |
361 | &iter); | |
362 | node = lttng_ht_iter_get_node_ulong(&iter); | |
363 | if (node != NULL) { | |
364 | socket = caa_container_of(node, struct consumer_socket, node); | |
365 | } | |
366 | ||
367 | return socket; | |
368 | } | |
369 | ||
370 | /* | |
371 | * Allocate a new consumer_socket and return the pointer. | |
372 | */ | |
4ce514c4 | 373 | struct consumer_socket *consumer_allocate_socket(int *fd) |
173af62f DG |
374 | { |
375 | struct consumer_socket *socket = NULL; | |
376 | ||
4ce514c4 DG |
377 | assert(fd); |
378 | ||
173af62f DG |
379 | socket = zmalloc(sizeof(struct consumer_socket)); |
380 | if (socket == NULL) { | |
381 | PERROR("zmalloc consumer socket"); | |
382 | goto error; | |
383 | } | |
384 | ||
9363801e | 385 | socket->fd_ptr = fd; |
4ce514c4 | 386 | lttng_ht_node_init_ulong(&socket->node, *fd); |
173af62f DG |
387 | |
388 | error: | |
389 | return socket; | |
390 | } | |
391 | ||
392 | /* | |
393 | * Add consumer socket to consumer output object. Read side lock must be | |
394 | * acquired before calling this function. | |
395 | */ | |
396 | void consumer_add_socket(struct consumer_socket *sock, | |
397 | struct consumer_output *consumer) | |
398 | { | |
399 | assert(sock); | |
400 | assert(consumer); | |
401 | ||
402 | lttng_ht_add_unique_ulong(consumer->socks, &sock->node); | |
403 | } | |
404 | ||
405 | /* | |
406 | * Delte consumer socket to consumer output object. Read side lock must be | |
407 | * acquired before calling this function. | |
408 | */ | |
409 | void consumer_del_socket(struct consumer_socket *sock, | |
410 | struct consumer_output *consumer) | |
411 | { | |
412 | int ret; | |
413 | struct lttng_ht_iter iter; | |
414 | ||
415 | assert(sock); | |
416 | assert(consumer); | |
417 | ||
418 | iter.iter.node = &sock->node.node; | |
419 | ret = lttng_ht_del(consumer->socks, &iter); | |
420 | assert(!ret); | |
421 | } | |
422 | ||
423 | /* | |
424 | * RCU destroy call function. | |
425 | */ | |
426 | static void destroy_socket_rcu(struct rcu_head *head) | |
427 | { | |
428 | struct lttng_ht_node_ulong *node = | |
429 | caa_container_of(head, struct lttng_ht_node_ulong, head); | |
430 | struct consumer_socket *socket = | |
431 | caa_container_of(node, struct consumer_socket, node); | |
432 | ||
433 | free(socket); | |
434 | } | |
435 | ||
436 | /* | |
437 | * Destroy and free socket pointer in a call RCU. Read side lock must be | |
438 | * acquired before calling this function. | |
439 | */ | |
440 | void consumer_destroy_socket(struct consumer_socket *sock) | |
441 | { | |
442 | assert(sock); | |
443 | ||
444 | /* | |
445 | * We DO NOT close the file descriptor here since it is global to the | |
2f77fc4b DG |
446 | * session daemon and is closed only if the consumer dies or a custom |
447 | * consumer was registered, | |
173af62f | 448 | */ |
2f77fc4b | 449 | if (sock->registered) { |
9363801e DG |
450 | DBG3("Consumer socket was registered. Closing fd %d", *sock->fd_ptr); |
451 | lttcomm_close_unix_sock(*sock->fd_ptr); | |
2f77fc4b | 452 | } |
173af62f DG |
453 | |
454 | call_rcu(&sock->node.head, destroy_socket_rcu); | |
455 | } | |
456 | ||
00e2e675 DG |
457 | /* |
458 | * Allocate and assign data to a consumer_output object. | |
459 | * | |
460 | * Return pointer to structure. | |
461 | */ | |
462 | struct consumer_output *consumer_create_output(enum consumer_dst_type type) | |
463 | { | |
464 | struct consumer_output *output = NULL; | |
465 | ||
466 | output = zmalloc(sizeof(struct consumer_output)); | |
467 | if (output == NULL) { | |
468 | PERROR("zmalloc consumer_output"); | |
469 | goto error; | |
470 | } | |
471 | ||
472 | /* By default, consumer output is enabled */ | |
473 | output->enabled = 1; | |
474 | output->type = type; | |
d88aee68 | 475 | output->net_seq_index = (uint64_t) -1ULL; |
6addfa37 | 476 | urcu_ref_init(&output->ref); |
173af62f DG |
477 | |
478 | output->socks = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG); | |
00e2e675 DG |
479 | |
480 | error: | |
481 | return output; | |
482 | } | |
483 | ||
af706bb7 DG |
484 | /* |
485 | * Iterate over the consumer output socket hash table and destroy them. The | |
486 | * socket file descriptor are only closed if the consumer output was | |
487 | * registered meaning it's an external consumer. | |
488 | */ | |
489 | void consumer_destroy_output_sockets(struct consumer_output *obj) | |
490 | { | |
491 | struct lttng_ht_iter iter; | |
492 | struct consumer_socket *socket; | |
493 | ||
494 | if (!obj->socks) { | |
495 | return; | |
496 | } | |
497 | ||
498 | rcu_read_lock(); | |
499 | cds_lfht_for_each_entry(obj->socks->ht, &iter.iter, socket, node.node) { | |
500 | consumer_del_socket(socket, obj); | |
501 | consumer_destroy_socket(socket); | |
502 | } | |
503 | rcu_read_unlock(); | |
504 | } | |
505 | ||
00e2e675 DG |
506 | /* |
507 | * Delete the consumer_output object from the list and free the ptr. | |
36b588ed MD |
508 | * |
509 | * Should *NOT* be called with RCU read-side lock held. | |
00e2e675 | 510 | */ |
6addfa37 | 511 | static void consumer_release_output(struct urcu_ref *ref) |
00e2e675 | 512 | { |
6addfa37 MD |
513 | struct consumer_output *obj = |
514 | caa_container_of(ref, struct consumer_output, ref); | |
00e2e675 | 515 | |
af706bb7 | 516 | consumer_destroy_output_sockets(obj); |
2f77fc4b | 517 | |
af706bb7 | 518 | if (obj->socks) { |
2f77fc4b | 519 | /* Finally destroy HT */ |
0b2dc8df | 520 | ht_cleanup_push(obj->socks); |
00e2e675 | 521 | } |
173af62f | 522 | |
00e2e675 DG |
523 | free(obj); |
524 | } | |
525 | ||
6addfa37 MD |
526 | /* |
527 | * Get the consumer_output object. | |
528 | */ | |
529 | void consumer_output_get(struct consumer_output *obj) | |
530 | { | |
531 | urcu_ref_get(&obj->ref); | |
532 | } | |
533 | ||
534 | /* | |
535 | * Put the consumer_output object. | |
536 | * | |
537 | * Should *NOT* be called with RCU read-side lock held. | |
538 | */ | |
539 | void consumer_output_put(struct consumer_output *obj) | |
540 | { | |
541 | if (!obj) { | |
542 | return; | |
543 | } | |
544 | urcu_ref_put(&obj->ref, consumer_release_output); | |
545 | } | |
546 | ||
00e2e675 DG |
547 | /* |
548 | * Copy consumer output and returned the newly allocated copy. | |
36b588ed MD |
549 | * |
550 | * Should *NOT* be called with RCU read-side lock held. | |
00e2e675 DG |
551 | */ |
552 | struct consumer_output *consumer_copy_output(struct consumer_output *obj) | |
553 | { | |
6dc3064a | 554 | int ret; |
00e2e675 DG |
555 | struct consumer_output *output; |
556 | ||
557 | assert(obj); | |
558 | ||
559 | output = consumer_create_output(obj->type); | |
560 | if (output == NULL) { | |
6addfa37 | 561 | goto end; |
00e2e675 | 562 | } |
6addfa37 MD |
563 | output->enabled = obj->enabled; |
564 | output->net_seq_index = obj->net_seq_index; | |
565 | memcpy(output->subdir, obj->subdir, PATH_MAX); | |
566 | output->snapshot = obj->snapshot; | |
567 | memcpy(&output->dst, &obj->dst, sizeof(output->dst)); | |
6dc3064a DG |
568 | ret = consumer_copy_sockets(output, obj); |
569 | if (ret < 0) { | |
6addfa37 | 570 | goto error_put; |
6dc3064a | 571 | } |
6addfa37 | 572 | end: |
6dc3064a DG |
573 | return output; |
574 | ||
6addfa37 MD |
575 | error_put: |
576 | consumer_output_put(output); | |
6dc3064a DG |
577 | return NULL; |
578 | } | |
579 | ||
580 | /* | |
581 | * Copy consumer sockets from src to dst. | |
582 | * | |
583 | * Return 0 on success or else a negative value. | |
584 | */ | |
585 | int consumer_copy_sockets(struct consumer_output *dst, | |
586 | struct consumer_output *src) | |
587 | { | |
588 | int ret = 0; | |
589 | struct lttng_ht_iter iter; | |
590 | struct consumer_socket *socket, *copy_sock; | |
591 | ||
592 | assert(dst); | |
593 | assert(src); | |
594 | ||
b82c5c4d | 595 | rcu_read_lock(); |
6dc3064a DG |
596 | cds_lfht_for_each_entry(src->socks->ht, &iter.iter, socket, node.node) { |
597 | /* Ignore socket that are already there. */ | |
9363801e | 598 | copy_sock = consumer_find_socket(*socket->fd_ptr, dst); |
6dc3064a DG |
599 | if (copy_sock) { |
600 | continue; | |
601 | } | |
602 | ||
173af62f | 603 | /* Create new socket object. */ |
9363801e | 604 | copy_sock = consumer_allocate_socket(socket->fd_ptr); |
173af62f | 605 | if (copy_sock == NULL) { |
b82c5c4d | 606 | rcu_read_unlock(); |
6dc3064a DG |
607 | ret = -ENOMEM; |
608 | goto error; | |
173af62f DG |
609 | } |
610 | ||
09a90bcd | 611 | copy_sock->registered = socket->registered; |
6dc3064a DG |
612 | /* |
613 | * This is valid because this lock is shared accross all consumer | |
614 | * object being the global lock of the consumer data structure of the | |
615 | * session daemon. | |
616 | */ | |
173af62f | 617 | copy_sock->lock = socket->lock; |
6dc3064a | 618 | consumer_add_socket(copy_sock, dst); |
173af62f | 619 | } |
b82c5c4d | 620 | rcu_read_unlock(); |
173af62f | 621 | |
00e2e675 | 622 | error: |
6dc3064a | 623 | return ret; |
00e2e675 DG |
624 | } |
625 | ||
626 | /* | |
627 | * Set network URI to the consumer output object. | |
628 | * | |
ad20f474 DG |
629 | * Return 0 on success. Return 1 if the URI were equal. Else, negative value on |
630 | * error. | |
00e2e675 DG |
631 | */ |
632 | int consumer_set_network_uri(struct consumer_output *obj, | |
633 | struct lttng_uri *uri) | |
634 | { | |
635 | int ret; | |
636 | char tmp_path[PATH_MAX]; | |
637 | char hostname[HOST_NAME_MAX]; | |
638 | struct lttng_uri *dst_uri = NULL; | |
639 | ||
640 | /* Code flow error safety net. */ | |
641 | assert(obj); | |
642 | assert(uri); | |
643 | ||
644 | switch (uri->stype) { | |
645 | case LTTNG_STREAM_CONTROL: | |
646 | dst_uri = &obj->dst.net.control; | |
647 | obj->dst.net.control_isset = 1; | |
648 | if (uri->port == 0) { | |
649 | /* Assign default port. */ | |
650 | uri->port = DEFAULT_NETWORK_CONTROL_PORT; | |
a74934ba DG |
651 | } else { |
652 | if (obj->dst.net.data_isset && uri->port == | |
653 | obj->dst.net.data.port) { | |
654 | ret = -LTTNG_ERR_INVALID; | |
655 | goto error; | |
656 | } | |
00e2e675 | 657 | } |
ad20f474 | 658 | DBG3("Consumer control URI set with port %d", uri->port); |
00e2e675 DG |
659 | break; |
660 | case LTTNG_STREAM_DATA: | |
661 | dst_uri = &obj->dst.net.data; | |
662 | obj->dst.net.data_isset = 1; | |
663 | if (uri->port == 0) { | |
664 | /* Assign default port. */ | |
665 | uri->port = DEFAULT_NETWORK_DATA_PORT; | |
a74934ba DG |
666 | } else { |
667 | if (obj->dst.net.control_isset && uri->port == | |
668 | obj->dst.net.control.port) { | |
669 | ret = -LTTNG_ERR_INVALID; | |
670 | goto error; | |
671 | } | |
00e2e675 | 672 | } |
ad20f474 | 673 | DBG3("Consumer data URI set with port %d", uri->port); |
00e2e675 DG |
674 | break; |
675 | default: | |
676 | ERR("Set network uri type unknown %d", uri->stype); | |
a74934ba | 677 | ret = -LTTNG_ERR_INVALID; |
00e2e675 DG |
678 | goto error; |
679 | } | |
680 | ||
681 | ret = uri_compare(dst_uri, uri); | |
682 | if (!ret) { | |
683 | /* Same URI, don't touch it and return success. */ | |
684 | DBG3("URI network compare are the same"); | |
ad20f474 | 685 | goto equal; |
00e2e675 DG |
686 | } |
687 | ||
688 | /* URIs were not equal, replacing it. */ | |
689 | memset(dst_uri, 0, sizeof(struct lttng_uri)); | |
690 | memcpy(dst_uri, uri, sizeof(struct lttng_uri)); | |
691 | obj->type = CONSUMER_DST_NET; | |
692 | ||
693 | /* Handle subdir and add hostname in front. */ | |
694 | if (dst_uri->stype == LTTNG_STREAM_CONTROL) { | |
695 | /* Get hostname to append it in the pathname */ | |
696 | ret = gethostname(hostname, sizeof(hostname)); | |
697 | if (ret < 0) { | |
698 | PERROR("gethostname. Fallback on default localhost"); | |
699 | strncpy(hostname, "localhost", sizeof(hostname)); | |
700 | } | |
701 | hostname[sizeof(hostname) - 1] = '\0'; | |
702 | ||
703 | /* Setup consumer subdir if none present in the control URI */ | |
704 | if (strlen(dst_uri->subdir) == 0) { | |
705 | ret = snprintf(tmp_path, sizeof(tmp_path), "%s/%s", | |
706 | hostname, obj->subdir); | |
707 | } else { | |
708 | ret = snprintf(tmp_path, sizeof(tmp_path), "%s/%s", | |
709 | hostname, dst_uri->subdir); | |
710 | } | |
711 | if (ret < 0) { | |
712 | PERROR("snprintf set consumer uri subdir"); | |
a74934ba | 713 | ret = -LTTNG_ERR_NOMEM; |
00e2e675 DG |
714 | goto error; |
715 | } | |
716 | ||
717 | strncpy(obj->subdir, tmp_path, sizeof(obj->subdir)); | |
718 | DBG3("Consumer set network uri subdir path %s", tmp_path); | |
719 | } | |
720 | ||
00e2e675 | 721 | return 0; |
ad20f474 DG |
722 | equal: |
723 | return 1; | |
00e2e675 | 724 | error: |
a74934ba | 725 | return ret; |
00e2e675 DG |
726 | } |
727 | ||
728 | /* | |
729 | * Send file descriptor to consumer via sock. | |
730 | */ | |
f50f23d9 | 731 | int consumer_send_fds(struct consumer_socket *sock, int *fds, size_t nb_fd) |
00e2e675 DG |
732 | { |
733 | int ret; | |
734 | ||
735 | assert(fds); | |
f50f23d9 | 736 | assert(sock); |
00e2e675 DG |
737 | assert(nb_fd > 0); |
738 | ||
9363801e | 739 | ret = lttcomm_send_fds_unix_sock(*sock->fd_ptr, fds, nb_fd); |
00e2e675 | 740 | if (ret < 0) { |
3448e266 | 741 | /* The above call will print a PERROR on error. */ |
9363801e | 742 | DBG("Error when sending consumer fds on sock %d", *sock->fd_ptr); |
00e2e675 DG |
743 | goto error; |
744 | } | |
745 | ||
f50f23d9 DG |
746 | ret = consumer_recv_status_reply(sock); |
747 | ||
00e2e675 DG |
748 | error: |
749 | return ret; | |
750 | } | |
751 | ||
ffe60014 DG |
752 | /* |
753 | * Consumer send communication message structure to consumer. | |
754 | */ | |
755 | int consumer_send_msg(struct consumer_socket *sock, | |
756 | struct lttcomm_consumer_msg *msg) | |
757 | { | |
758 | int ret; | |
759 | ||
760 | assert(msg); | |
761 | assert(sock); | |
ffe60014 | 762 | |
52898cb1 | 763 | ret = consumer_socket_send(sock, msg, sizeof(struct lttcomm_consumer_msg)); |
ffe60014 | 764 | if (ret < 0) { |
ffe60014 DG |
765 | goto error; |
766 | } | |
767 | ||
768 | ret = consumer_recv_status_reply(sock); | |
769 | ||
770 | error: | |
771 | return ret; | |
772 | } | |
773 | ||
00e2e675 DG |
774 | /* |
775 | * Consumer send channel communication message structure to consumer. | |
776 | */ | |
f50f23d9 DG |
777 | int consumer_send_channel(struct consumer_socket *sock, |
778 | struct lttcomm_consumer_msg *msg) | |
00e2e675 DG |
779 | { |
780 | int ret; | |
781 | ||
782 | assert(msg); | |
f50f23d9 | 783 | assert(sock); |
00e2e675 | 784 | |
52898cb1 | 785 | ret = consumer_send_msg(sock, msg); |
00e2e675 | 786 | if (ret < 0) { |
00e2e675 DG |
787 | goto error; |
788 | } | |
789 | ||
790 | error: | |
791 | return ret; | |
792 | } | |
793 | ||
ffe60014 DG |
794 | /* |
795 | * Populate the given consumer msg structure with the ask_channel command | |
796 | * information. | |
797 | */ | |
798 | void consumer_init_ask_channel_comm_msg(struct lttcomm_consumer_msg *msg, | |
799 | uint64_t subbuf_size, | |
800 | uint64_t num_subbuf, | |
801 | int overwrite, | |
802 | unsigned int switch_timer_interval, | |
803 | unsigned int read_timer_interval, | |
ecc48a90 | 804 | unsigned int live_timer_interval, |
ffe60014 DG |
805 | int output, |
806 | int type, | |
807 | uint64_t session_id, | |
808 | const char *pathname, | |
809 | const char *name, | |
810 | uid_t uid, | |
811 | gid_t gid, | |
d88aee68 DG |
812 | uint64_t relayd_id, |
813 | uint64_t key, | |
7972aab2 | 814 | unsigned char *uuid, |
1624d5b7 JD |
815 | uint32_t chan_id, |
816 | uint64_t tracefile_size, | |
2bba9e53 | 817 | uint64_t tracefile_count, |
1950109e | 818 | uint64_t session_id_per_pid, |
567eb353 | 819 | unsigned int monitor, |
d7ba1388 | 820 | uint32_t ust_app_uid, |
3d071855 | 821 | const char *root_shm_path, |
d7ba1388 | 822 | const char *shm_path) |
ffe60014 DG |
823 | { |
824 | assert(msg); | |
825 | ||
826 | /* Zeroed structure */ | |
827 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
828 | ||
829 | msg->cmd_type = LTTNG_CONSUMER_ASK_CHANNEL_CREATION; | |
830 | msg->u.ask_channel.subbuf_size = subbuf_size; | |
831 | msg->u.ask_channel.num_subbuf = num_subbuf ; | |
832 | msg->u.ask_channel.overwrite = overwrite; | |
833 | msg->u.ask_channel.switch_timer_interval = switch_timer_interval; | |
834 | msg->u.ask_channel.read_timer_interval = read_timer_interval; | |
ecc48a90 | 835 | msg->u.ask_channel.live_timer_interval = live_timer_interval; |
ffe60014 DG |
836 | msg->u.ask_channel.output = output; |
837 | msg->u.ask_channel.type = type; | |
838 | msg->u.ask_channel.session_id = session_id; | |
1950109e | 839 | msg->u.ask_channel.session_id_per_pid = session_id_per_pid; |
ffe60014 DG |
840 | msg->u.ask_channel.uid = uid; |
841 | msg->u.ask_channel.gid = gid; | |
842 | msg->u.ask_channel.relayd_id = relayd_id; | |
843 | msg->u.ask_channel.key = key; | |
7972aab2 | 844 | msg->u.ask_channel.chan_id = chan_id; |
1624d5b7 JD |
845 | msg->u.ask_channel.tracefile_size = tracefile_size; |
846 | msg->u.ask_channel.tracefile_count = tracefile_count; | |
2bba9e53 | 847 | msg->u.ask_channel.monitor = monitor; |
567eb353 | 848 | msg->u.ask_channel.ust_app_uid = ust_app_uid; |
ffe60014 DG |
849 | |
850 | memcpy(msg->u.ask_channel.uuid, uuid, sizeof(msg->u.ask_channel.uuid)); | |
851 | ||
10a50311 JD |
852 | if (pathname) { |
853 | strncpy(msg->u.ask_channel.pathname, pathname, | |
854 | sizeof(msg->u.ask_channel.pathname)); | |
855 | msg->u.ask_channel.pathname[sizeof(msg->u.ask_channel.pathname)-1] = '\0'; | |
856 | } | |
ffe60014 DG |
857 | |
858 | strncpy(msg->u.ask_channel.name, name, sizeof(msg->u.ask_channel.name)); | |
859 | msg->u.ask_channel.name[sizeof(msg->u.ask_channel.name) - 1] = '\0'; | |
d7ba1388 | 860 | |
3d071855 MD |
861 | if (root_shm_path) { |
862 | strncpy(msg->u.ask_channel.root_shm_path, root_shm_path, | |
863 | sizeof(msg->u.ask_channel.root_shm_path)); | |
864 | msg->u.ask_channel.root_shm_path[sizeof(msg->u.ask_channel.root_shm_path) - 1] = '\0'; | |
865 | } | |
d7ba1388 MD |
866 | if (shm_path) { |
867 | strncpy(msg->u.ask_channel.shm_path, shm_path, | |
868 | sizeof(msg->u.ask_channel.shm_path)); | |
869 | msg->u.ask_channel.shm_path[sizeof(msg->u.ask_channel.shm_path) - 1] = '\0'; | |
870 | } | |
ffe60014 DG |
871 | } |
872 | ||
00e2e675 DG |
873 | /* |
874 | * Init channel communication message structure. | |
875 | */ | |
876 | void consumer_init_channel_comm_msg(struct lttcomm_consumer_msg *msg, | |
877 | enum lttng_consumer_command cmd, | |
d88aee68 | 878 | uint64_t channel_key, |
ffe60014 DG |
879 | uint64_t session_id, |
880 | const char *pathname, | |
881 | uid_t uid, | |
882 | gid_t gid, | |
d88aee68 | 883 | uint64_t relayd_id, |
c30aaa51 | 884 | const char *name, |
ffe60014 DG |
885 | unsigned int nb_init_streams, |
886 | enum lttng_event_output output, | |
1624d5b7 JD |
887 | int type, |
888 | uint64_t tracefile_size, | |
2bba9e53 | 889 | uint64_t tracefile_count, |
ecc48a90 JD |
890 | unsigned int monitor, |
891 | unsigned int live_timer_interval) | |
00e2e675 DG |
892 | { |
893 | assert(msg); | |
894 | ||
00e2e675 DG |
895 | /* Zeroed structure */ |
896 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
897 | ||
898 | /* Send channel */ | |
899 | msg->cmd_type = cmd; | |
900 | msg->u.channel.channel_key = channel_key; | |
ffe60014 DG |
901 | msg->u.channel.session_id = session_id; |
902 | msg->u.channel.uid = uid; | |
903 | msg->u.channel.gid = gid; | |
904 | msg->u.channel.relayd_id = relayd_id; | |
c30aaa51 | 905 | msg->u.channel.nb_init_streams = nb_init_streams; |
ffe60014 DG |
906 | msg->u.channel.output = output; |
907 | msg->u.channel.type = type; | |
1624d5b7 JD |
908 | msg->u.channel.tracefile_size = tracefile_size; |
909 | msg->u.channel.tracefile_count = tracefile_count; | |
2bba9e53 | 910 | msg->u.channel.monitor = monitor; |
ecc48a90 | 911 | msg->u.channel.live_timer_interval = live_timer_interval; |
ffe60014 DG |
912 | |
913 | strncpy(msg->u.channel.pathname, pathname, | |
914 | sizeof(msg->u.channel.pathname)); | |
915 | msg->u.channel.pathname[sizeof(msg->u.channel.pathname) - 1] = '\0'; | |
916 | ||
917 | strncpy(msg->u.channel.name, name, sizeof(msg->u.channel.name)); | |
918 | msg->u.channel.name[sizeof(msg->u.channel.name) - 1] = '\0'; | |
00e2e675 DG |
919 | } |
920 | ||
921 | /* | |
922 | * Init stream communication message structure. | |
923 | */ | |
924 | void consumer_init_stream_comm_msg(struct lttcomm_consumer_msg *msg, | |
925 | enum lttng_consumer_command cmd, | |
d88aee68 DG |
926 | uint64_t channel_key, |
927 | uint64_t stream_key, | |
ffe60014 | 928 | int cpu) |
00e2e675 DG |
929 | { |
930 | assert(msg); | |
931 | ||
932 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
933 | ||
00e2e675 DG |
934 | msg->cmd_type = cmd; |
935 | msg->u.stream.channel_key = channel_key; | |
936 | msg->u.stream.stream_key = stream_key; | |
ffe60014 | 937 | msg->u.stream.cpu = cpu; |
00e2e675 DG |
938 | } |
939 | ||
a4baae1b JD |
940 | void consumer_init_streams_sent_comm_msg(struct lttcomm_consumer_msg *msg, |
941 | enum lttng_consumer_command cmd, | |
942 | uint64_t channel_key, uint64_t net_seq_idx) | |
943 | { | |
944 | assert(msg); | |
945 | ||
946 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
947 | ||
948 | msg->cmd_type = cmd; | |
949 | msg->u.sent_streams.channel_key = channel_key; | |
950 | msg->u.sent_streams.net_seq_idx = net_seq_idx; | |
951 | } | |
952 | ||
00e2e675 DG |
953 | /* |
954 | * Send stream communication structure to the consumer. | |
955 | */ | |
f50f23d9 DG |
956 | int consumer_send_stream(struct consumer_socket *sock, |
957 | struct consumer_output *dst, struct lttcomm_consumer_msg *msg, | |
958 | int *fds, size_t nb_fd) | |
00e2e675 DG |
959 | { |
960 | int ret; | |
961 | ||
962 | assert(msg); | |
963 | assert(dst); | |
f50f23d9 | 964 | assert(sock); |
ffe60014 | 965 | assert(fds); |
00e2e675 | 966 | |
52898cb1 | 967 | ret = consumer_send_msg(sock, msg); |
f50f23d9 DG |
968 | if (ret < 0) { |
969 | goto error; | |
970 | } | |
971 | ||
00e2e675 DG |
972 | ret = consumer_send_fds(sock, fds, nb_fd); |
973 | if (ret < 0) { | |
974 | goto error; | |
975 | } | |
976 | ||
977 | error: | |
978 | return ret; | |
979 | } | |
37278a1e DG |
980 | |
981 | /* | |
982 | * Send relayd socket to consumer associated with a session name. | |
983 | * | |
984 | * On success return positive value. On error, negative value. | |
985 | */ | |
f50f23d9 | 986 | int consumer_send_relayd_socket(struct consumer_socket *consumer_sock, |
6151a90f | 987 | struct lttcomm_relayd_sock *rsock, struct consumer_output *consumer, |
d3e2ba59 JD |
988 | enum lttng_stream_type type, uint64_t session_id, |
989 | char *session_name, char *hostname, int session_live_timer) | |
37278a1e DG |
990 | { |
991 | int ret; | |
992 | struct lttcomm_consumer_msg msg; | |
993 | ||
994 | /* Code flow error. Safety net. */ | |
6151a90f | 995 | assert(rsock); |
37278a1e | 996 | assert(consumer); |
f50f23d9 | 997 | assert(consumer_sock); |
37278a1e | 998 | |
53efb85a | 999 | memset(&msg, 0, sizeof(msg)); |
37278a1e DG |
1000 | /* Bail out if consumer is disabled */ |
1001 | if (!consumer->enabled) { | |
f73fabfd | 1002 | ret = LTTNG_OK; |
37278a1e DG |
1003 | goto error; |
1004 | } | |
1005 | ||
d3e2ba59 JD |
1006 | if (type == LTTNG_STREAM_CONTROL) { |
1007 | ret = relayd_create_session(rsock, | |
1008 | &msg.u.relayd_sock.relayd_session_id, | |
7d2f7452 DG |
1009 | session_name, hostname, session_live_timer, |
1010 | consumer->snapshot); | |
d3e2ba59 JD |
1011 | if (ret < 0) { |
1012 | /* Close the control socket. */ | |
1013 | (void) relayd_close(rsock); | |
1014 | goto error; | |
1015 | } | |
1016 | } | |
1017 | ||
37278a1e DG |
1018 | msg.cmd_type = LTTNG_CONSUMER_ADD_RELAYD_SOCKET; |
1019 | /* | |
1020 | * Assign network consumer output index using the temporary consumer since | |
1021 | * this call should only be made from within a set_consumer_uri() function | |
1022 | * call in the session daemon. | |
1023 | */ | |
1024 | msg.u.relayd_sock.net_index = consumer->net_seq_index; | |
1025 | msg.u.relayd_sock.type = type; | |
46e6455f | 1026 | msg.u.relayd_sock.session_id = session_id; |
6151a90f | 1027 | memcpy(&msg.u.relayd_sock.sock, rsock, sizeof(msg.u.relayd_sock.sock)); |
37278a1e | 1028 | |
9363801e | 1029 | DBG3("Sending relayd sock info to consumer on %d", *consumer_sock->fd_ptr); |
52898cb1 | 1030 | ret = consumer_send_msg(consumer_sock, &msg); |
f50f23d9 DG |
1031 | if (ret < 0) { |
1032 | goto error; | |
1033 | } | |
1034 | ||
37278a1e | 1035 | DBG3("Sending relayd socket file descriptor to consumer"); |
6151a90f | 1036 | ret = consumer_send_fds(consumer_sock, &rsock->sock.fd, 1); |
37278a1e DG |
1037 | if (ret < 0) { |
1038 | goto error; | |
1039 | } | |
1040 | ||
1041 | DBG2("Consumer relayd socket sent"); | |
1042 | ||
1043 | error: | |
1044 | return ret; | |
1045 | } | |
173af62f DG |
1046 | |
1047 | /* | |
2f77fc4b DG |
1048 | * Set consumer subdirectory using the session name and a generated datetime if |
1049 | * needed. This is appended to the current subdirectory. | |
173af62f | 1050 | */ |
2f77fc4b DG |
1051 | int consumer_set_subdir(struct consumer_output *consumer, |
1052 | const char *session_name) | |
173af62f | 1053 | { |
2f77fc4b DG |
1054 | int ret = 0; |
1055 | unsigned int have_default_name = 0; | |
1056 | char datetime[16], tmp_path[PATH_MAX]; | |
1057 | time_t rawtime; | |
1058 | struct tm *timeinfo; | |
173af62f DG |
1059 | |
1060 | assert(consumer); | |
2f77fc4b DG |
1061 | assert(session_name); |
1062 | ||
1063 | memset(tmp_path, 0, sizeof(tmp_path)); | |
1064 | ||
1065 | /* Flag if we have a default session. */ | |
1066 | if (strncmp(session_name, DEFAULT_SESSION_NAME "-", | |
1067 | strlen(DEFAULT_SESSION_NAME) + 1) == 0) { | |
1068 | have_default_name = 1; | |
1069 | } else { | |
1070 | /* Get date and time for session path */ | |
1071 | time(&rawtime); | |
1072 | timeinfo = localtime(&rawtime); | |
1073 | strftime(datetime, sizeof(datetime), "%Y%m%d-%H%M%S", timeinfo); | |
173af62f DG |
1074 | } |
1075 | ||
2f77fc4b DG |
1076 | if (have_default_name) { |
1077 | ret = snprintf(tmp_path, sizeof(tmp_path), | |
1078 | "%s/%s", consumer->subdir, session_name); | |
1079 | } else { | |
1080 | ret = snprintf(tmp_path, sizeof(tmp_path), | |
1081 | "%s/%s-%s/", consumer->subdir, session_name, datetime); | |
1082 | } | |
173af62f | 1083 | if (ret < 0) { |
2f77fc4b | 1084 | PERROR("snprintf session name date"); |
173af62f DG |
1085 | goto error; |
1086 | } | |
1087 | ||
2f77fc4b DG |
1088 | strncpy(consumer->subdir, tmp_path, sizeof(consumer->subdir)); |
1089 | DBG2("Consumer subdir set to %s", consumer->subdir); | |
173af62f DG |
1090 | |
1091 | error: | |
1092 | return ret; | |
1093 | } | |
806e2684 DG |
1094 | |
1095 | /* | |
5e280d77 MD |
1096 | * Ask the consumer if the data is pending for the specific session id. |
1097 | * Returns 1 if data is pending, 0 otherwise, or < 0 on error. | |
806e2684 | 1098 | */ |
d88aee68 | 1099 | int consumer_is_data_pending(uint64_t session_id, |
806e2684 DG |
1100 | struct consumer_output *consumer) |
1101 | { | |
1102 | int ret; | |
6d805429 | 1103 | int32_t ret_code = 0; /* Default is that the data is NOT pending */ |
806e2684 DG |
1104 | struct consumer_socket *socket; |
1105 | struct lttng_ht_iter iter; | |
1106 | struct lttcomm_consumer_msg msg; | |
1107 | ||
1108 | assert(consumer); | |
1109 | ||
53efb85a | 1110 | DBG3("Consumer data pending for id %" PRIu64, session_id); |
806e2684 | 1111 | |
53efb85a MD |
1112 | memset(&msg, 0, sizeof(msg)); |
1113 | msg.cmd_type = LTTNG_CONSUMER_DATA_PENDING; | |
d88aee68 | 1114 | msg.u.data_pending.session_id = session_id; |
806e2684 | 1115 | |
c8f59ee5 | 1116 | /* Send command for each consumer */ |
b82c5c4d | 1117 | rcu_read_lock(); |
806e2684 DG |
1118 | cds_lfht_for_each_entry(consumer->socks->ht, &iter.iter, socket, |
1119 | node.node) { | |
806e2684 | 1120 | pthread_mutex_lock(socket->lock); |
52898cb1 | 1121 | ret = consumer_socket_send(socket, &msg, sizeof(msg)); |
806e2684 | 1122 | if (ret < 0) { |
806e2684 | 1123 | pthread_mutex_unlock(socket->lock); |
b82c5c4d | 1124 | goto error_unlock; |
806e2684 DG |
1125 | } |
1126 | ||
f50f23d9 DG |
1127 | /* |
1128 | * No need for a recv reply status because the answer to the command is | |
1129 | * the reply status message. | |
1130 | */ | |
1131 | ||
52898cb1 DG |
1132 | ret = consumer_socket_recv(socket, &ret_code, sizeof(ret_code)); |
1133 | if (ret < 0) { | |
806e2684 | 1134 | pthread_mutex_unlock(socket->lock); |
b82c5c4d | 1135 | goto error_unlock; |
806e2684 | 1136 | } |
806e2684 DG |
1137 | pthread_mutex_unlock(socket->lock); |
1138 | ||
6d805429 | 1139 | if (ret_code == 1) { |
806e2684 DG |
1140 | break; |
1141 | } | |
1142 | } | |
b82c5c4d | 1143 | rcu_read_unlock(); |
806e2684 | 1144 | |
d88aee68 DG |
1145 | DBG("Consumer data is %s pending for session id %" PRIu64, |
1146 | ret_code == 1 ? "" : "NOT", session_id); | |
806e2684 DG |
1147 | return ret_code; |
1148 | ||
b82c5c4d DG |
1149 | error_unlock: |
1150 | rcu_read_unlock(); | |
806e2684 DG |
1151 | return -1; |
1152 | } | |
7972aab2 DG |
1153 | |
1154 | /* | |
1155 | * Send a flush command to consumer using the given channel key. | |
1156 | * | |
1157 | * Return 0 on success else a negative value. | |
1158 | */ | |
1159 | int consumer_flush_channel(struct consumer_socket *socket, uint64_t key) | |
1160 | { | |
1161 | int ret; | |
1162 | struct lttcomm_consumer_msg msg; | |
1163 | ||
1164 | assert(socket); | |
7972aab2 DG |
1165 | |
1166 | DBG2("Consumer flush channel key %" PRIu64, key); | |
1167 | ||
53efb85a | 1168 | memset(&msg, 0, sizeof(msg)); |
7972aab2 DG |
1169 | msg.cmd_type = LTTNG_CONSUMER_FLUSH_CHANNEL; |
1170 | msg.u.flush_channel.key = key; | |
1171 | ||
1172 | pthread_mutex_lock(socket->lock); | |
1173 | health_code_update(); | |
1174 | ||
1175 | ret = consumer_send_msg(socket, &msg); | |
1176 | if (ret < 0) { | |
1177 | goto end; | |
1178 | } | |
1179 | ||
1180 | end: | |
1181 | health_code_update(); | |
1182 | pthread_mutex_unlock(socket->lock); | |
1183 | return ret; | |
1184 | } | |
1185 | ||
1186 | /* | |
dc2bbdae MD |
1187 | * Send a close metadata command to consumer using the given channel key. |
1188 | * Called with registry lock held. | |
7972aab2 DG |
1189 | * |
1190 | * Return 0 on success else a negative value. | |
1191 | */ | |
1192 | int consumer_close_metadata(struct consumer_socket *socket, | |
1193 | uint64_t metadata_key) | |
1194 | { | |
1195 | int ret; | |
1196 | struct lttcomm_consumer_msg msg; | |
1197 | ||
1198 | assert(socket); | |
7972aab2 DG |
1199 | |
1200 | DBG2("Consumer close metadata channel key %" PRIu64, metadata_key); | |
1201 | ||
53efb85a | 1202 | memset(&msg, 0, sizeof(msg)); |
7972aab2 DG |
1203 | msg.cmd_type = LTTNG_CONSUMER_CLOSE_METADATA; |
1204 | msg.u.close_metadata.key = metadata_key; | |
1205 | ||
1206 | pthread_mutex_lock(socket->lock); | |
1207 | health_code_update(); | |
1208 | ||
1209 | ret = consumer_send_msg(socket, &msg); | |
1210 | if (ret < 0) { | |
1211 | goto end; | |
1212 | } | |
1213 | ||
1214 | end: | |
1215 | health_code_update(); | |
1216 | pthread_mutex_unlock(socket->lock); | |
1217 | return ret; | |
1218 | } | |
1219 | ||
1220 | /* | |
1221 | * Send a setup metdata command to consumer using the given channel key. | |
1222 | * | |
1223 | * Return 0 on success else a negative value. | |
1224 | */ | |
1225 | int consumer_setup_metadata(struct consumer_socket *socket, | |
1226 | uint64_t metadata_key) | |
1227 | { | |
1228 | int ret; | |
1229 | struct lttcomm_consumer_msg msg; | |
1230 | ||
1231 | assert(socket); | |
7972aab2 DG |
1232 | |
1233 | DBG2("Consumer setup metadata channel key %" PRIu64, metadata_key); | |
1234 | ||
53efb85a | 1235 | memset(&msg, 0, sizeof(msg)); |
7972aab2 DG |
1236 | msg.cmd_type = LTTNG_CONSUMER_SETUP_METADATA; |
1237 | msg.u.setup_metadata.key = metadata_key; | |
1238 | ||
1239 | pthread_mutex_lock(socket->lock); | |
1240 | health_code_update(); | |
1241 | ||
1242 | ret = consumer_send_msg(socket, &msg); | |
1243 | if (ret < 0) { | |
1244 | goto end; | |
1245 | } | |
1246 | ||
1247 | end: | |
1248 | health_code_update(); | |
1249 | pthread_mutex_unlock(socket->lock); | |
1250 | return ret; | |
1251 | } | |
1252 | ||
1253 | /* | |
dc2bbdae MD |
1254 | * Send metadata string to consumer. |
1255 | * RCU read-side lock must be held to guarantee existence of socket. | |
7972aab2 DG |
1256 | * |
1257 | * Return 0 on success else a negative value. | |
1258 | */ | |
1259 | int consumer_push_metadata(struct consumer_socket *socket, | |
1260 | uint64_t metadata_key, char *metadata_str, size_t len, | |
1261 | size_t target_offset) | |
1262 | { | |
1263 | int ret; | |
1264 | struct lttcomm_consumer_msg msg; | |
1265 | ||
1266 | assert(socket); | |
7972aab2 | 1267 | |
9363801e | 1268 | DBG2("Consumer push metadata to consumer socket %d", *socket->fd_ptr); |
7972aab2 | 1269 | |
dc2bbdae MD |
1270 | pthread_mutex_lock(socket->lock); |
1271 | ||
53efb85a | 1272 | memset(&msg, 0, sizeof(msg)); |
7972aab2 DG |
1273 | msg.cmd_type = LTTNG_CONSUMER_PUSH_METADATA; |
1274 | msg.u.push_metadata.key = metadata_key; | |
1275 | msg.u.push_metadata.target_offset = target_offset; | |
1276 | msg.u.push_metadata.len = len; | |
1277 | ||
7972aab2 DG |
1278 | health_code_update(); |
1279 | ret = consumer_send_msg(socket, &msg); | |
331744e3 | 1280 | if (ret < 0 || len == 0) { |
7972aab2 DG |
1281 | goto end; |
1282 | } | |
1283 | ||
9363801e DG |
1284 | DBG3("Consumer pushing metadata on sock %d of len %zu", *socket->fd_ptr, |
1285 | len); | |
7972aab2 | 1286 | |
52898cb1 | 1287 | ret = consumer_socket_send(socket, metadata_str, len); |
7972aab2 DG |
1288 | if (ret < 0) { |
1289 | goto end; | |
1290 | } | |
1291 | ||
1292 | health_code_update(); | |
1293 | ret = consumer_recv_status_reply(socket); | |
1294 | if (ret < 0) { | |
1295 | goto end; | |
1296 | } | |
1297 | ||
1298 | end: | |
dc2bbdae | 1299 | pthread_mutex_unlock(socket->lock); |
7972aab2 | 1300 | health_code_update(); |
7972aab2 DG |
1301 | return ret; |
1302 | } | |
6dc3064a DG |
1303 | |
1304 | /* | |
1305 | * Ask the consumer to snapshot a specific channel using the key. | |
1306 | * | |
1307 | * Return 0 on success or else a negative error. | |
1308 | */ | |
1309 | int consumer_snapshot_channel(struct consumer_socket *socket, uint64_t key, | |
1310 | struct snapshot_output *output, int metadata, uid_t uid, gid_t gid, | |
d07ceecd | 1311 | const char *session_path, int wait, uint64_t nb_packets_per_stream) |
6dc3064a DG |
1312 | { |
1313 | int ret; | |
1314 | struct lttcomm_consumer_msg msg; | |
1315 | ||
1316 | assert(socket); | |
6dc3064a DG |
1317 | assert(output); |
1318 | assert(output->consumer); | |
1319 | ||
1320 | DBG("Consumer snapshot channel key %" PRIu64, key); | |
1321 | ||
ee91bab2 | 1322 | memset(&msg, 0, sizeof(msg)); |
6dc3064a DG |
1323 | msg.cmd_type = LTTNG_CONSUMER_SNAPSHOT_CHANNEL; |
1324 | msg.u.snapshot_channel.key = key; | |
d07ceecd | 1325 | msg.u.snapshot_channel.nb_packets_per_stream = nb_packets_per_stream; |
6dc3064a DG |
1326 | msg.u.snapshot_channel.metadata = metadata; |
1327 | ||
1328 | if (output->consumer->type == CONSUMER_DST_NET) { | |
1329 | msg.u.snapshot_channel.relayd_id = output->consumer->net_seq_index; | |
1330 | msg.u.snapshot_channel.use_relayd = 1; | |
1331 | ret = snprintf(msg.u.snapshot_channel.pathname, | |
1bfe7328 DG |
1332 | sizeof(msg.u.snapshot_channel.pathname), |
1333 | "%s/%s-%s-%" PRIu64 "%s", output->consumer->subdir, | |
1334 | output->name, output->datetime, output->nb_snapshot, | |
ee91bab2 | 1335 | session_path); |
6dc3064a DG |
1336 | if (ret < 0) { |
1337 | ret = -LTTNG_ERR_NOMEM; | |
1338 | goto error; | |
1339 | } | |
1340 | } else { | |
1341 | ret = snprintf(msg.u.snapshot_channel.pathname, | |
1bfe7328 DG |
1342 | sizeof(msg.u.snapshot_channel.pathname), |
1343 | "%s/%s-%s-%" PRIu64 "%s", output->consumer->dst.trace_path, | |
1344 | output->name, output->datetime, output->nb_snapshot, | |
1345 | session_path); | |
6dc3064a DG |
1346 | if (ret < 0) { |
1347 | ret = -LTTNG_ERR_NOMEM; | |
1348 | goto error; | |
1349 | } | |
07b86b52 | 1350 | msg.u.snapshot_channel.relayd_id = (uint64_t) -1ULL; |
6dc3064a DG |
1351 | |
1352 | /* Create directory. Ignore if exist. */ | |
1353 | ret = run_as_mkdir_recursive(msg.u.snapshot_channel.pathname, | |
1354 | S_IRWXU | S_IRWXG, uid, gid); | |
1355 | if (ret < 0) { | |
df5b86c8 | 1356 | if (errno != EEXIST) { |
6dc3064a DG |
1357 | ERR("Trace directory creation error"); |
1358 | goto error; | |
1359 | } | |
1360 | } | |
1361 | } | |
1362 | ||
1363 | health_code_update(); | |
1364 | ret = consumer_send_msg(socket, &msg); | |
1365 | if (ret < 0) { | |
1366 | goto error; | |
1367 | } | |
1368 | ||
1369 | error: | |
1370 | health_code_update(); | |
1371 | return ret; | |
1372 | } |