Commit | Line | Data |
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f1e16794 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 | ||
6c1c0768 | 18 | #define _LGPL_SOURCE |
f1e16794 DG |
19 | #include <stdio.h> |
20 | #include <stdlib.h> | |
f1e16794 DG |
21 | #include <sys/stat.h> |
22 | #include <unistd.h> | |
e1f3997a | 23 | #include <inttypes.h> |
f1e16794 DG |
24 | |
25 | #include <common/common.h> | |
26 | #include <common/defaults.h> | |
f5436bfc | 27 | #include <common/compat/string.h> |
f1e16794 | 28 | |
00e2e675 | 29 | #include "consumer.h" |
8782cc74 | 30 | #include "health-sessiond.h" |
f1e16794 | 31 | #include "kernel-consumer.h" |
e9404c27 JG |
32 | #include "notification-thread-commands.h" |
33 | #include "session.h" | |
34 | #include "lttng-sessiond.h" | |
f1e16794 | 35 | |
2bba9e53 DG |
36 | static char *create_channel_path(struct consumer_output *consumer, |
37 | uid_t uid, gid_t gid) | |
00e2e675 DG |
38 | { |
39 | int ret; | |
ffe60014 | 40 | char tmp_path[PATH_MAX]; |
2bba9e53 | 41 | char *pathname = NULL; |
00e2e675 | 42 | |
2bba9e53 | 43 | assert(consumer); |
00e2e675 | 44 | |
ffe60014 DG |
45 | /* Get the right path name destination */ |
46 | if (consumer->type == CONSUMER_DST_LOCAL) { | |
47 | /* Set application path to the destination path */ | |
366a9222 JD |
48 | ret = snprintf(tmp_path, sizeof(tmp_path), "%s%s%s", |
49 | consumer->dst.session_root_path, | |
50 | consumer->chunk_path, | |
51 | consumer->subdir); | |
ffe60014 | 52 | if (ret < 0) { |
2bba9e53 | 53 | PERROR("snprintf kernel channel path"); |
ffe60014 | 54 | goto error; |
dba13f1d JG |
55 | } else if (ret >= sizeof(tmp_path)) { |
56 | ERR("Kernel channel path exceeds the maximal allowed length of of %zu bytes (%i bytes required) with path \"%s%s%s\"", | |
57 | sizeof(tmp_path), ret, | |
58 | consumer->dst.session_root_path, | |
59 | consumer->chunk_path, | |
60 | consumer->subdir); | |
61 | goto error; | |
ffe60014 | 62 | } |
f5436bfc | 63 | pathname = lttng_strndup(tmp_path, sizeof(tmp_path)); |
bb3c4e70 | 64 | if (!pathname) { |
f5436bfc | 65 | PERROR("lttng_strndup"); |
bb3c4e70 MD |
66 | goto error; |
67 | } | |
ffe60014 DG |
68 | |
69 | /* Create directory */ | |
2bba9e53 | 70 | ret = run_as_mkdir_recursive(pathname, S_IRWXU | S_IRWXG, uid, gid); |
ffe60014 | 71 | if (ret < 0) { |
df5b86c8 | 72 | if (errno != EEXIST) { |
ffe60014 DG |
73 | ERR("Trace directory creation error"); |
74 | goto error; | |
75 | } | |
76 | } | |
77 | DBG3("Kernel local consumer tracefile path: %s", pathname); | |
78 | } else { | |
2b29c638 JD |
79 | ret = snprintf(tmp_path, sizeof(tmp_path), "%s%s", |
80 | consumer->dst.net.base_dir, | |
81 | consumer->subdir); | |
ffe60014 | 82 | if (ret < 0) { |
2bba9e53 | 83 | PERROR("snprintf kernel metadata path"); |
ffe60014 | 84 | goto error; |
dba13f1d JG |
85 | } else if (ret >= sizeof(tmp_path)) { |
86 | ERR("Kernel channel path exceeds the maximal allowed length of of %zu bytes (%i bytes required) with path \"%s%s\"", | |
87 | sizeof(tmp_path), ret, | |
88 | consumer->dst.net.base_dir, | |
89 | consumer->subdir); | |
90 | goto error; | |
ffe60014 | 91 | } |
f5436bfc | 92 | pathname = lttng_strndup(tmp_path, sizeof(tmp_path)); |
bb3c4e70 | 93 | if (!pathname) { |
f5436bfc | 94 | PERROR("lttng_strndup"); |
bb3c4e70 MD |
95 | goto error; |
96 | } | |
ffe60014 DG |
97 | DBG3("Kernel network consumer subdir path: %s", pathname); |
98 | } | |
99 | ||
2bba9e53 DG |
100 | return pathname; |
101 | ||
102 | error: | |
103 | free(pathname); | |
104 | return NULL; | |
105 | } | |
106 | ||
107 | /* | |
108 | * Sending a single channel to the consumer with command ADD_CHANNEL. | |
109 | */ | |
110 | int kernel_consumer_add_channel(struct consumer_socket *sock, | |
e9404c27 JG |
111 | struct ltt_kernel_channel *channel, |
112 | struct ltt_kernel_session *ksession, | |
2bba9e53 DG |
113 | unsigned int monitor) |
114 | { | |
115 | int ret; | |
116 | char *pathname; | |
117 | struct lttcomm_consumer_msg lkm; | |
118 | struct consumer_output *consumer; | |
e9404c27 | 119 | enum lttng_error_code status; |
e32d7f27 | 120 | struct ltt_session *session = NULL; |
e9404c27 | 121 | struct lttng_channel_extended *channel_attr_extended; |
2bba9e53 DG |
122 | |
123 | /* Safety net */ | |
124 | assert(channel); | |
e9404c27 JG |
125 | assert(ksession); |
126 | assert(ksession->consumer); | |
2bba9e53 | 127 | |
e9404c27 JG |
128 | consumer = ksession->consumer; |
129 | channel_attr_extended = (struct lttng_channel_extended *) | |
130 | channel->channel->attr.extended.ptr; | |
2bba9e53 DG |
131 | |
132 | DBG("Kernel consumer adding channel %s to kernel consumer", | |
133 | channel->channel->name); | |
134 | ||
135 | if (monitor) { | |
e9404c27 JG |
136 | pathname = create_channel_path(consumer, ksession->uid, |
137 | ksession->gid); | |
2bba9e53 DG |
138 | } else { |
139 | /* Empty path. */ | |
53efb85a | 140 | pathname = strdup(""); |
2bba9e53 | 141 | } |
bb3c4e70 MD |
142 | if (!pathname) { |
143 | ret = -1; | |
144 | goto error; | |
145 | } | |
2bba9e53 | 146 | |
00e2e675 | 147 | /* Prep channel message structure */ |
638e7b4e | 148 | consumer_init_add_channel_comm_msg(&lkm, |
e1f3997a | 149 | channel->key, |
e9404c27 | 150 | ksession->id, |
ffe60014 | 151 | pathname, |
e9404c27 JG |
152 | ksession->uid, |
153 | ksession->gid, | |
ffe60014 | 154 | consumer->net_seq_index, |
c30aaa51 | 155 | channel->channel->name, |
ffe60014 DG |
156 | channel->stream_count, |
157 | channel->channel->attr.output, | |
1624d5b7 JD |
158 | CONSUMER_CHANNEL_TYPE_DATA, |
159 | channel->channel->attr.tracefile_size, | |
2bba9e53 | 160 | channel->channel->attr.tracefile_count, |
ecc48a90 | 161 | monitor, |
e9404c27 JG |
162 | channel->channel->attr.live_timer_interval, |
163 | channel_attr_extended->monitor_timer_interval); | |
00e2e675 | 164 | |
840cb59c | 165 | health_code_update(); |
ca03de58 | 166 | |
00e2e675 DG |
167 | ret = consumer_send_channel(sock, &lkm); |
168 | if (ret < 0) { | |
169 | goto error; | |
170 | } | |
171 | ||
840cb59c | 172 | health_code_update(); |
e9404c27 JG |
173 | rcu_read_lock(); |
174 | session = session_find_by_id(ksession->id); | |
175 | assert(session); | |
e098433c JG |
176 | assert(pthread_mutex_trylock(&session->lock)); |
177 | assert(session_trylock_list()); | |
ca03de58 | 178 | |
e9404c27 JG |
179 | status = notification_thread_command_add_channel( |
180 | notification_thread_handle, session->name, | |
181 | ksession->uid, ksession->gid, | |
e1f3997a | 182 | channel->channel->name, channel->key, |
e9404c27 JG |
183 | LTTNG_DOMAIN_KERNEL, |
184 | channel->channel->attr.subbuf_size * channel->channel->attr.num_subbuf); | |
185 | rcu_read_unlock(); | |
186 | if (status != LTTNG_OK) { | |
187 | ret = -1; | |
188 | goto error; | |
189 | } | |
753873bf JR |
190 | |
191 | channel->published_to_notification_thread = true; | |
192 | ||
00e2e675 | 193 | error: |
e32d7f27 JG |
194 | if (session) { |
195 | session_put(session); | |
196 | } | |
53efb85a | 197 | free(pathname); |
00e2e675 DG |
198 | return ret; |
199 | } | |
200 | ||
201 | /* | |
202 | * Sending metadata to the consumer with command ADD_CHANNEL and ADD_STREAM. | |
9a318688 JG |
203 | * |
204 | * The consumer socket lock must be held by the caller. | |
00e2e675 | 205 | */ |
f50f23d9 | 206 | int kernel_consumer_add_metadata(struct consumer_socket *sock, |
e098433c | 207 | struct ltt_kernel_session *ksession, unsigned int monitor) |
00e2e675 DG |
208 | { |
209 | int ret; | |
2bba9e53 | 210 | char *pathname; |
00e2e675 | 211 | struct lttcomm_consumer_msg lkm; |
a7d9a3e7 | 212 | struct consumer_output *consumer; |
e32d7f27 | 213 | struct ltt_session *session = NULL; |
e098433c JG |
214 | |
215 | rcu_read_lock(); | |
00e2e675 DG |
216 | |
217 | /* Safety net */ | |
e098433c JG |
218 | assert(ksession); |
219 | assert(ksession->consumer); | |
f50f23d9 | 220 | assert(sock); |
00e2e675 | 221 | |
e098433c JG |
222 | DBG("Sending metadata %d to kernel consumer", |
223 | ksession->metadata_stream_fd); | |
00e2e675 DG |
224 | |
225 | /* Get consumer output pointer */ | |
e098433c | 226 | consumer = ksession->consumer; |
00e2e675 | 227 | |
2bba9e53 | 228 | if (monitor) { |
e098433c JG |
229 | pathname = create_channel_path(consumer, |
230 | ksession->uid, ksession->gid); | |
00e2e675 | 231 | } else { |
2bba9e53 | 232 | /* Empty path. */ |
53efb85a | 233 | pathname = strdup(""); |
00e2e675 | 234 | } |
bb3c4e70 MD |
235 | if (!pathname) { |
236 | ret = -1; | |
237 | goto error; | |
238 | } | |
00e2e675 | 239 | |
e098433c JG |
240 | session = session_find_by_id(ksession->id); |
241 | assert(session); | |
242 | assert(pthread_mutex_trylock(&session->lock)); | |
243 | assert(session_trylock_list()); | |
244 | ||
00e2e675 | 245 | /* Prep channel message structure */ |
638e7b4e | 246 | consumer_init_add_channel_comm_msg(&lkm, |
e098433c JG |
247 | ksession->metadata->key, |
248 | ksession->id, | |
ffe60014 | 249 | pathname, |
e098433c JG |
250 | ksession->uid, |
251 | ksession->gid, | |
ffe60014 | 252 | consumer->net_seq_index, |
30079b6b | 253 | DEFAULT_METADATA_NAME, |
ffe60014 DG |
254 | 1, |
255 | DEFAULT_KERNEL_CHANNEL_OUTPUT, | |
1624d5b7 | 256 | CONSUMER_CHANNEL_TYPE_METADATA, |
2bba9e53 | 257 | 0, 0, |
e9404c27 | 258 | monitor, 0, 0); |
00e2e675 | 259 | |
840cb59c | 260 | health_code_update(); |
ca03de58 | 261 | |
00e2e675 DG |
262 | ret = consumer_send_channel(sock, &lkm); |
263 | if (ret < 0) { | |
264 | goto error; | |
265 | } | |
266 | ||
840cb59c | 267 | health_code_update(); |
ca03de58 | 268 | |
00e2e675 | 269 | /* Prep stream message structure */ |
e098433c JG |
270 | consumer_init_add_stream_comm_msg(&lkm, |
271 | ksession->metadata->key, | |
272 | ksession->metadata_stream_fd, | |
273 | 0 /* CPU: 0 for metadata. */, | |
274 | session->current_archive_id); | |
00e2e675 | 275 | |
840cb59c | 276 | health_code_update(); |
ca03de58 | 277 | |
00e2e675 | 278 | /* Send stream and file descriptor */ |
a7d9a3e7 | 279 | ret = consumer_send_stream(sock, consumer, &lkm, |
e098433c | 280 | &ksession->metadata_stream_fd, 1); |
00e2e675 DG |
281 | if (ret < 0) { |
282 | goto error; | |
283 | } | |
284 | ||
840cb59c | 285 | health_code_update(); |
ca03de58 | 286 | |
00e2e675 | 287 | error: |
e098433c | 288 | rcu_read_unlock(); |
53efb85a | 289 | free(pathname); |
e32d7f27 JG |
290 | if (session) { |
291 | session_put(session); | |
292 | } | |
00e2e675 DG |
293 | return ret; |
294 | } | |
295 | ||
296 | /* | |
297 | * Sending a single stream to the consumer with command ADD_STREAM. | |
298 | */ | |
5b0e3ccb | 299 | static |
f50f23d9 | 300 | int kernel_consumer_add_stream(struct consumer_socket *sock, |
e098433c JG |
301 | struct ltt_kernel_channel *channel, |
302 | struct ltt_kernel_stream *stream, | |
303 | struct ltt_kernel_session *session, unsigned int monitor, | |
304 | uint64_t trace_archive_id) | |
00e2e675 DG |
305 | { |
306 | int ret; | |
00e2e675 | 307 | struct lttcomm_consumer_msg lkm; |
a7d9a3e7 | 308 | struct consumer_output *consumer; |
00e2e675 DG |
309 | |
310 | assert(channel); | |
311 | assert(stream); | |
312 | assert(session); | |
313 | assert(session->consumer); | |
f50f23d9 | 314 | assert(sock); |
00e2e675 DG |
315 | |
316 | DBG("Sending stream %d of channel %s to kernel consumer", | |
317 | stream->fd, channel->channel->name); | |
318 | ||
319 | /* Get consumer output pointer */ | |
a7d9a3e7 | 320 | consumer = session->consumer; |
00e2e675 | 321 | |
00e2e675 | 322 | /* Prep stream consumer message */ |
e098433c | 323 | consumer_init_add_stream_comm_msg(&lkm, |
e1f3997a | 324 | channel->key, |
00e2e675 | 325 | stream->fd, |
e098433c JG |
326 | stream->cpu, |
327 | trace_archive_id); | |
00e2e675 | 328 | |
840cb59c | 329 | health_code_update(); |
ca03de58 | 330 | |
00e2e675 | 331 | /* Send stream and file descriptor */ |
a7d9a3e7 | 332 | ret = consumer_send_stream(sock, consumer, &lkm, &stream->fd, 1); |
00e2e675 DG |
333 | if (ret < 0) { |
334 | goto error; | |
335 | } | |
336 | ||
840cb59c | 337 | health_code_update(); |
ca03de58 | 338 | |
00e2e675 DG |
339 | error: |
340 | return ret; | |
341 | } | |
342 | ||
a4baae1b JD |
343 | /* |
344 | * Sending the notification that all streams were sent with STREAMS_SENT. | |
345 | */ | |
346 | int kernel_consumer_streams_sent(struct consumer_socket *sock, | |
347 | struct ltt_kernel_session *session, uint64_t channel_key) | |
348 | { | |
349 | int ret; | |
350 | struct lttcomm_consumer_msg lkm; | |
351 | struct consumer_output *consumer; | |
352 | ||
353 | assert(sock); | |
354 | assert(session); | |
355 | ||
356 | DBG("Sending streams_sent"); | |
357 | /* Get consumer output pointer */ | |
358 | consumer = session->consumer; | |
359 | ||
360 | /* Prep stream consumer message */ | |
361 | consumer_init_streams_sent_comm_msg(&lkm, | |
362 | LTTNG_CONSUMER_STREAMS_SENT, | |
363 | channel_key, consumer->net_seq_index); | |
364 | ||
365 | health_code_update(); | |
366 | ||
367 | /* Send stream and file descriptor */ | |
368 | ret = consumer_send_msg(sock, &lkm); | |
369 | if (ret < 0) { | |
370 | goto error; | |
371 | } | |
372 | ||
373 | error: | |
374 | return ret; | |
375 | } | |
376 | ||
f1e16794 DG |
377 | /* |
378 | * Send all stream fds of kernel channel to the consumer. | |
9a318688 JG |
379 | * |
380 | * The consumer socket lock must be held by the caller. | |
f1e16794 | 381 | */ |
1fc1b7c8 | 382 | int kernel_consumer_send_channel_streams(struct consumer_socket *sock, |
e098433c | 383 | struct ltt_kernel_channel *channel, struct ltt_kernel_session *ksession, |
2bba9e53 | 384 | unsigned int monitor) |
f1e16794 | 385 | { |
e99f9447 | 386 | int ret = LTTNG_OK; |
f1e16794 | 387 | struct ltt_kernel_stream *stream; |
e32d7f27 | 388 | struct ltt_session *session = NULL; |
00e2e675 DG |
389 | |
390 | /* Safety net */ | |
391 | assert(channel); | |
e098433c JG |
392 | assert(ksession); |
393 | assert(ksession->consumer); | |
f50f23d9 | 394 | assert(sock); |
00e2e675 | 395 | |
e098433c JG |
396 | rcu_read_lock(); |
397 | ||
398 | session = session_find_by_id(ksession->id); | |
399 | assert(session); | |
400 | assert(pthread_mutex_trylock(&session->lock)); | |
401 | assert(session_trylock_list()); | |
402 | ||
00e2e675 | 403 | /* Bail out if consumer is disabled */ |
e098433c | 404 | if (!ksession->consumer->enabled) { |
f73fabfd | 405 | ret = LTTNG_OK; |
00e2e675 DG |
406 | goto error; |
407 | } | |
f1e16794 DG |
408 | |
409 | DBG("Sending streams of channel %s to kernel consumer", | |
410 | channel->channel->name); | |
411 | ||
e99f9447 | 412 | if (!channel->sent_to_consumer) { |
e098433c | 413 | ret = kernel_consumer_add_channel(sock, channel, ksession, monitor); |
e99f9447 MD |
414 | if (ret < 0) { |
415 | goto error; | |
416 | } | |
417 | channel->sent_to_consumer = true; | |
f1e16794 DG |
418 | } |
419 | ||
420 | /* Send streams */ | |
421 | cds_list_for_each_entry(stream, &channel->stream_list.head, list) { | |
6986ab9b | 422 | if (!stream->fd || stream->sent_to_consumer) { |
f1e16794 DG |
423 | continue; |
424 | } | |
00e2e675 DG |
425 | |
426 | /* Add stream on the kernel consumer side. */ | |
e098433c JG |
427 | ret = kernel_consumer_add_stream(sock, channel, stream, |
428 | ksession, monitor, session->current_archive_id); | |
f1e16794 | 429 | if (ret < 0) { |
f1e16794 DG |
430 | goto error; |
431 | } | |
6986ab9b | 432 | stream->sent_to_consumer = true; |
f1e16794 DG |
433 | } |
434 | ||
f1e16794 | 435 | error: |
e098433c | 436 | rcu_read_unlock(); |
e32d7f27 JG |
437 | if (session) { |
438 | session_put(session); | |
439 | } | |
f1e16794 DG |
440 | return ret; |
441 | } | |
442 | ||
443 | /* | |
444 | * Send all stream fds of the kernel session to the consumer. | |
9a318688 JG |
445 | * |
446 | * The consumer socket lock must be held by the caller. | |
f1e16794 | 447 | */ |
f50f23d9 DG |
448 | int kernel_consumer_send_session(struct consumer_socket *sock, |
449 | struct ltt_kernel_session *session) | |
f1e16794 | 450 | { |
2bba9e53 | 451 | int ret, monitor = 0; |
f1e16794 | 452 | struct ltt_kernel_channel *chan; |
f1e16794 | 453 | |
00e2e675 DG |
454 | /* Safety net */ |
455 | assert(session); | |
456 | assert(session->consumer); | |
f50f23d9 | 457 | assert(sock); |
f1e16794 | 458 | |
00e2e675 DG |
459 | /* Bail out if consumer is disabled */ |
460 | if (!session->consumer->enabled) { | |
f73fabfd | 461 | ret = LTTNG_OK; |
00e2e675 | 462 | goto error; |
f1e16794 DG |
463 | } |
464 | ||
2bba9e53 DG |
465 | /* Don't monitor the streams on the consumer if in flight recorder. */ |
466 | if (session->output_traces) { | |
467 | monitor = 1; | |
468 | } | |
469 | ||
00e2e675 DG |
470 | DBG("Sending session stream to kernel consumer"); |
471 | ||
609af759 | 472 | if (session->metadata_stream_fd >= 0 && session->metadata) { |
2bba9e53 | 473 | ret = kernel_consumer_add_metadata(sock, session, monitor); |
f1e16794 | 474 | if (ret < 0) { |
f1e16794 DG |
475 | goto error; |
476 | } | |
f1e16794 DG |
477 | } |
478 | ||
00e2e675 | 479 | /* Send channel and streams of it */ |
f1e16794 | 480 | cds_list_for_each_entry(chan, &session->channel_list.head, list) { |
1fc1b7c8 | 481 | ret = kernel_consumer_send_channel_streams(sock, chan, session, |
2bba9e53 | 482 | monitor); |
f1e16794 DG |
483 | if (ret < 0) { |
484 | goto error; | |
485 | } | |
601262d6 JD |
486 | if (monitor) { |
487 | /* | |
488 | * Inform the relay that all the streams for the | |
489 | * channel were sent. | |
490 | */ | |
e1f3997a | 491 | ret = kernel_consumer_streams_sent(sock, session, chan->key); |
601262d6 JD |
492 | if (ret < 0) { |
493 | goto error; | |
494 | } | |
495 | } | |
f1e16794 DG |
496 | } |
497 | ||
00e2e675 | 498 | DBG("Kernel consumer FDs of metadata and channel streams sent"); |
f1e16794 | 499 | |
4ce9ff51 | 500 | session->consumer_fds_sent = 1; |
f1e16794 DG |
501 | return 0; |
502 | ||
503 | error: | |
504 | return ret; | |
505 | } | |
07b86b52 JD |
506 | |
507 | int kernel_consumer_destroy_channel(struct consumer_socket *socket, | |
508 | struct ltt_kernel_channel *channel) | |
509 | { | |
510 | int ret; | |
511 | struct lttcomm_consumer_msg msg; | |
512 | ||
513 | assert(channel); | |
514 | assert(socket); | |
07b86b52 | 515 | |
e1f3997a | 516 | DBG("Sending kernel consumer destroy channel key %" PRIu64, channel->key); |
07b86b52 | 517 | |
53efb85a | 518 | memset(&msg, 0, sizeof(msg)); |
07b86b52 | 519 | msg.cmd_type = LTTNG_CONSUMER_DESTROY_CHANNEL; |
e1f3997a | 520 | msg.u.destroy_channel.key = channel->key; |
07b86b52 JD |
521 | |
522 | pthread_mutex_lock(socket->lock); | |
523 | health_code_update(); | |
524 | ||
525 | ret = consumer_send_msg(socket, &msg); | |
526 | if (ret < 0) { | |
527 | goto error; | |
528 | } | |
529 | ||
530 | error: | |
531 | health_code_update(); | |
532 | pthread_mutex_unlock(socket->lock); | |
533 | return ret; | |
534 | } | |
535 | ||
536 | int kernel_consumer_destroy_metadata(struct consumer_socket *socket, | |
537 | struct ltt_kernel_metadata *metadata) | |
538 | { | |
539 | int ret; | |
540 | struct lttcomm_consumer_msg msg; | |
541 | ||
542 | assert(metadata); | |
543 | assert(socket); | |
07b86b52 | 544 | |
d40f0359 | 545 | DBG("Sending kernel consumer destroy channel key %" PRIu64, metadata->key); |
07b86b52 | 546 | |
53efb85a | 547 | memset(&msg, 0, sizeof(msg)); |
07b86b52 | 548 | msg.cmd_type = LTTNG_CONSUMER_DESTROY_CHANNEL; |
d40f0359 | 549 | msg.u.destroy_channel.key = metadata->key; |
07b86b52 JD |
550 | |
551 | pthread_mutex_lock(socket->lock); | |
552 | health_code_update(); | |
553 | ||
554 | ret = consumer_send_msg(socket, &msg); | |
555 | if (ret < 0) { | |
556 | goto error; | |
557 | } | |
558 | ||
559 | error: | |
560 | health_code_update(); | |
561 | pthread_mutex_unlock(socket->lock); | |
562 | return ret; | |
563 | } |