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 | */ | |
ba27cd00 | 110 | static |
2bba9e53 | 111 | int kernel_consumer_add_channel(struct consumer_socket *sock, |
e9404c27 JG |
112 | struct ltt_kernel_channel *channel, |
113 | struct ltt_kernel_session *ksession, | |
2bba9e53 DG |
114 | unsigned int monitor) |
115 | { | |
116 | int ret; | |
117 | char *pathname; | |
118 | struct lttcomm_consumer_msg lkm; | |
119 | struct consumer_output *consumer; | |
e9404c27 | 120 | enum lttng_error_code status; |
e32d7f27 | 121 | struct ltt_session *session = NULL; |
e9404c27 | 122 | struct lttng_channel_extended *channel_attr_extended; |
2bba9e53 DG |
123 | |
124 | /* Safety net */ | |
125 | assert(channel); | |
e9404c27 JG |
126 | assert(ksession); |
127 | assert(ksession->consumer); | |
2bba9e53 | 128 | |
e9404c27 JG |
129 | consumer = ksession->consumer; |
130 | channel_attr_extended = (struct lttng_channel_extended *) | |
131 | channel->channel->attr.extended.ptr; | |
2bba9e53 DG |
132 | |
133 | DBG("Kernel consumer adding channel %s to kernel consumer", | |
134 | channel->channel->name); | |
135 | ||
136 | if (monitor) { | |
e9404c27 JG |
137 | pathname = create_channel_path(consumer, ksession->uid, |
138 | ksession->gid); | |
2bba9e53 DG |
139 | } else { |
140 | /* Empty path. */ | |
53efb85a | 141 | pathname = strdup(""); |
2bba9e53 | 142 | } |
bb3c4e70 MD |
143 | if (!pathname) { |
144 | ret = -1; | |
145 | goto error; | |
146 | } | |
2bba9e53 | 147 | |
00e2e675 | 148 | /* Prep channel message structure */ |
638e7b4e | 149 | consumer_init_add_channel_comm_msg(&lkm, |
e1f3997a | 150 | channel->key, |
e9404c27 | 151 | ksession->id, |
ffe60014 | 152 | pathname, |
e9404c27 JG |
153 | ksession->uid, |
154 | ksession->gid, | |
ffe60014 | 155 | consumer->net_seq_index, |
c30aaa51 | 156 | channel->channel->name, |
ffe60014 DG |
157 | channel->stream_count, |
158 | channel->channel->attr.output, | |
1624d5b7 JD |
159 | CONSUMER_CHANNEL_TYPE_DATA, |
160 | channel->channel->attr.tracefile_size, | |
2bba9e53 | 161 | channel->channel->attr.tracefile_count, |
ecc48a90 | 162 | monitor, |
e9404c27 JG |
163 | channel->channel->attr.live_timer_interval, |
164 | channel_attr_extended->monitor_timer_interval); | |
00e2e675 | 165 | |
840cb59c | 166 | health_code_update(); |
ca03de58 | 167 | |
00e2e675 DG |
168 | ret = consumer_send_channel(sock, &lkm); |
169 | if (ret < 0) { | |
170 | goto error; | |
171 | } | |
172 | ||
840cb59c | 173 | health_code_update(); |
e9404c27 JG |
174 | rcu_read_lock(); |
175 | session = session_find_by_id(ksession->id); | |
176 | assert(session); | |
e098433c JG |
177 | assert(pthread_mutex_trylock(&session->lock)); |
178 | assert(session_trylock_list()); | |
ca03de58 | 179 | |
e9404c27 JG |
180 | status = notification_thread_command_add_channel( |
181 | notification_thread_handle, session->name, | |
182 | ksession->uid, ksession->gid, | |
e1f3997a | 183 | channel->channel->name, channel->key, |
e9404c27 JG |
184 | LTTNG_DOMAIN_KERNEL, |
185 | channel->channel->attr.subbuf_size * channel->channel->attr.num_subbuf); | |
186 | rcu_read_unlock(); | |
187 | if (status != LTTNG_OK) { | |
188 | ret = -1; | |
189 | goto error; | |
190 | } | |
753873bf JR |
191 | |
192 | channel->published_to_notification_thread = true; | |
193 | ||
00e2e675 | 194 | error: |
e32d7f27 JG |
195 | if (session) { |
196 | session_put(session); | |
197 | } | |
53efb85a | 198 | free(pathname); |
00e2e675 DG |
199 | return ret; |
200 | } | |
201 | ||
202 | /* | |
203 | * Sending metadata to the consumer with command ADD_CHANNEL and ADD_STREAM. | |
9a318688 JG |
204 | * |
205 | * The consumer socket lock must be held by the caller. | |
00e2e675 | 206 | */ |
f50f23d9 | 207 | int kernel_consumer_add_metadata(struct consumer_socket *sock, |
e098433c | 208 | struct ltt_kernel_session *ksession, unsigned int monitor) |
00e2e675 DG |
209 | { |
210 | int ret; | |
2bba9e53 | 211 | char *pathname; |
00e2e675 | 212 | struct lttcomm_consumer_msg lkm; |
a7d9a3e7 | 213 | struct consumer_output *consumer; |
e32d7f27 | 214 | struct ltt_session *session = NULL; |
e098433c JG |
215 | |
216 | rcu_read_lock(); | |
00e2e675 DG |
217 | |
218 | /* Safety net */ | |
e098433c JG |
219 | assert(ksession); |
220 | assert(ksession->consumer); | |
f50f23d9 | 221 | assert(sock); |
00e2e675 | 222 | |
e098433c JG |
223 | DBG("Sending metadata %d to kernel consumer", |
224 | ksession->metadata_stream_fd); | |
00e2e675 DG |
225 | |
226 | /* Get consumer output pointer */ | |
e098433c | 227 | consumer = ksession->consumer; |
00e2e675 | 228 | |
2bba9e53 | 229 | if (monitor) { |
e098433c JG |
230 | pathname = create_channel_path(consumer, |
231 | ksession->uid, ksession->gid); | |
00e2e675 | 232 | } else { |
2bba9e53 | 233 | /* Empty path. */ |
53efb85a | 234 | pathname = strdup(""); |
00e2e675 | 235 | } |
bb3c4e70 MD |
236 | if (!pathname) { |
237 | ret = -1; | |
238 | goto error; | |
239 | } | |
00e2e675 | 240 | |
e098433c JG |
241 | session = session_find_by_id(ksession->id); |
242 | assert(session); | |
243 | assert(pthread_mutex_trylock(&session->lock)); | |
244 | assert(session_trylock_list()); | |
245 | ||
00e2e675 | 246 | /* Prep channel message structure */ |
638e7b4e | 247 | consumer_init_add_channel_comm_msg(&lkm, |
e098433c JG |
248 | ksession->metadata->key, |
249 | ksession->id, | |
ffe60014 | 250 | pathname, |
e098433c JG |
251 | ksession->uid, |
252 | ksession->gid, | |
ffe60014 | 253 | consumer->net_seq_index, |
30079b6b | 254 | DEFAULT_METADATA_NAME, |
ffe60014 DG |
255 | 1, |
256 | DEFAULT_KERNEL_CHANNEL_OUTPUT, | |
1624d5b7 | 257 | CONSUMER_CHANNEL_TYPE_METADATA, |
2bba9e53 | 258 | 0, 0, |
e9404c27 | 259 | monitor, 0, 0); |
00e2e675 | 260 | |
840cb59c | 261 | health_code_update(); |
ca03de58 | 262 | |
00e2e675 DG |
263 | ret = consumer_send_channel(sock, &lkm); |
264 | if (ret < 0) { | |
265 | goto error; | |
266 | } | |
267 | ||
840cb59c | 268 | health_code_update(); |
ca03de58 | 269 | |
00e2e675 | 270 | /* Prep stream message structure */ |
e098433c JG |
271 | consumer_init_add_stream_comm_msg(&lkm, |
272 | ksession->metadata->key, | |
273 | ksession->metadata_stream_fd, | |
274 | 0 /* CPU: 0 for metadata. */, | |
275 | session->current_archive_id); | |
00e2e675 | 276 | |
840cb59c | 277 | health_code_update(); |
ca03de58 | 278 | |
00e2e675 | 279 | /* Send stream and file descriptor */ |
a7d9a3e7 | 280 | ret = consumer_send_stream(sock, consumer, &lkm, |
e098433c | 281 | &ksession->metadata_stream_fd, 1); |
00e2e675 DG |
282 | if (ret < 0) { |
283 | goto error; | |
284 | } | |
285 | ||
840cb59c | 286 | health_code_update(); |
ca03de58 | 287 | |
00e2e675 | 288 | error: |
e098433c | 289 | rcu_read_unlock(); |
53efb85a | 290 | free(pathname); |
e32d7f27 JG |
291 | if (session) { |
292 | session_put(session); | |
293 | } | |
00e2e675 DG |
294 | return ret; |
295 | } | |
296 | ||
297 | /* | |
298 | * Sending a single stream to the consumer with command ADD_STREAM. | |
299 | */ | |
5b0e3ccb | 300 | static |
f50f23d9 | 301 | int kernel_consumer_add_stream(struct consumer_socket *sock, |
e098433c JG |
302 | struct ltt_kernel_channel *channel, |
303 | struct ltt_kernel_stream *stream, | |
304 | struct ltt_kernel_session *session, unsigned int monitor, | |
305 | uint64_t trace_archive_id) | |
00e2e675 DG |
306 | { |
307 | int ret; | |
00e2e675 | 308 | struct lttcomm_consumer_msg lkm; |
a7d9a3e7 | 309 | struct consumer_output *consumer; |
00e2e675 DG |
310 | |
311 | assert(channel); | |
312 | assert(stream); | |
313 | assert(session); | |
314 | assert(session->consumer); | |
f50f23d9 | 315 | assert(sock); |
00e2e675 DG |
316 | |
317 | DBG("Sending stream %d of channel %s to kernel consumer", | |
318 | stream->fd, channel->channel->name); | |
319 | ||
320 | /* Get consumer output pointer */ | |
a7d9a3e7 | 321 | consumer = session->consumer; |
00e2e675 | 322 | |
00e2e675 | 323 | /* Prep stream consumer message */ |
e098433c | 324 | consumer_init_add_stream_comm_msg(&lkm, |
e1f3997a | 325 | channel->key, |
00e2e675 | 326 | stream->fd, |
e098433c JG |
327 | stream->cpu, |
328 | trace_archive_id); | |
00e2e675 | 329 | |
840cb59c | 330 | health_code_update(); |
ca03de58 | 331 | |
00e2e675 | 332 | /* Send stream and file descriptor */ |
a7d9a3e7 | 333 | ret = consumer_send_stream(sock, consumer, &lkm, &stream->fd, 1); |
00e2e675 DG |
334 | if (ret < 0) { |
335 | goto error; | |
336 | } | |
337 | ||
840cb59c | 338 | health_code_update(); |
ca03de58 | 339 | |
00e2e675 DG |
340 | error: |
341 | return ret; | |
342 | } | |
343 | ||
a4baae1b JD |
344 | /* |
345 | * Sending the notification that all streams were sent with STREAMS_SENT. | |
346 | */ | |
347 | int kernel_consumer_streams_sent(struct consumer_socket *sock, | |
348 | struct ltt_kernel_session *session, uint64_t channel_key) | |
349 | { | |
350 | int ret; | |
351 | struct lttcomm_consumer_msg lkm; | |
352 | struct consumer_output *consumer; | |
353 | ||
354 | assert(sock); | |
355 | assert(session); | |
356 | ||
357 | DBG("Sending streams_sent"); | |
358 | /* Get consumer output pointer */ | |
359 | consumer = session->consumer; | |
360 | ||
361 | /* Prep stream consumer message */ | |
362 | consumer_init_streams_sent_comm_msg(&lkm, | |
363 | LTTNG_CONSUMER_STREAMS_SENT, | |
364 | channel_key, consumer->net_seq_index); | |
365 | ||
366 | health_code_update(); | |
367 | ||
368 | /* Send stream and file descriptor */ | |
369 | ret = consumer_send_msg(sock, &lkm); | |
370 | if (ret < 0) { | |
371 | goto error; | |
372 | } | |
373 | ||
374 | error: | |
375 | return ret; | |
376 | } | |
377 | ||
f1e16794 DG |
378 | /* |
379 | * Send all stream fds of kernel channel to the consumer. | |
9a318688 JG |
380 | * |
381 | * The consumer socket lock must be held by the caller. | |
f1e16794 | 382 | */ |
1fc1b7c8 | 383 | int kernel_consumer_send_channel_streams(struct consumer_socket *sock, |
e098433c | 384 | struct ltt_kernel_channel *channel, struct ltt_kernel_session *ksession, |
2bba9e53 | 385 | unsigned int monitor) |
f1e16794 | 386 | { |
e99f9447 | 387 | int ret = LTTNG_OK; |
f1e16794 | 388 | struct ltt_kernel_stream *stream; |
e32d7f27 | 389 | struct ltt_session *session = NULL; |
00e2e675 DG |
390 | |
391 | /* Safety net */ | |
392 | assert(channel); | |
e098433c JG |
393 | assert(ksession); |
394 | assert(ksession->consumer); | |
f50f23d9 | 395 | assert(sock); |
00e2e675 | 396 | |
e098433c JG |
397 | rcu_read_lock(); |
398 | ||
399 | session = session_find_by_id(ksession->id); | |
400 | assert(session); | |
401 | assert(pthread_mutex_trylock(&session->lock)); | |
402 | assert(session_trylock_list()); | |
403 | ||
00e2e675 | 404 | /* Bail out if consumer is disabled */ |
e098433c | 405 | if (!ksession->consumer->enabled) { |
f73fabfd | 406 | ret = LTTNG_OK; |
00e2e675 DG |
407 | goto error; |
408 | } | |
f1e16794 DG |
409 | |
410 | DBG("Sending streams of channel %s to kernel consumer", | |
411 | channel->channel->name); | |
412 | ||
e99f9447 | 413 | if (!channel->sent_to_consumer) { |
e098433c | 414 | ret = kernel_consumer_add_channel(sock, channel, ksession, monitor); |
e99f9447 MD |
415 | if (ret < 0) { |
416 | goto error; | |
417 | } | |
418 | channel->sent_to_consumer = true; | |
f1e16794 DG |
419 | } |
420 | ||
421 | /* Send streams */ | |
422 | cds_list_for_each_entry(stream, &channel->stream_list.head, list) { | |
6986ab9b | 423 | if (!stream->fd || stream->sent_to_consumer) { |
f1e16794 DG |
424 | continue; |
425 | } | |
00e2e675 DG |
426 | |
427 | /* Add stream on the kernel consumer side. */ | |
e098433c JG |
428 | ret = kernel_consumer_add_stream(sock, channel, stream, |
429 | ksession, monitor, session->current_archive_id); | |
f1e16794 | 430 | if (ret < 0) { |
f1e16794 DG |
431 | goto error; |
432 | } | |
6986ab9b | 433 | stream->sent_to_consumer = true; |
f1e16794 DG |
434 | } |
435 | ||
f1e16794 | 436 | error: |
e098433c | 437 | rcu_read_unlock(); |
e32d7f27 JG |
438 | if (session) { |
439 | session_put(session); | |
440 | } | |
f1e16794 DG |
441 | return ret; |
442 | } | |
443 | ||
444 | /* | |
445 | * Send all stream fds of the kernel session to the consumer. | |
9a318688 JG |
446 | * |
447 | * The consumer socket lock must be held by the caller. | |
f1e16794 | 448 | */ |
f50f23d9 DG |
449 | int kernel_consumer_send_session(struct consumer_socket *sock, |
450 | struct ltt_kernel_session *session) | |
f1e16794 | 451 | { |
2bba9e53 | 452 | int ret, monitor = 0; |
f1e16794 | 453 | struct ltt_kernel_channel *chan; |
f1e16794 | 454 | |
00e2e675 DG |
455 | /* Safety net */ |
456 | assert(session); | |
457 | assert(session->consumer); | |
f50f23d9 | 458 | assert(sock); |
f1e16794 | 459 | |
00e2e675 DG |
460 | /* Bail out if consumer is disabled */ |
461 | if (!session->consumer->enabled) { | |
f73fabfd | 462 | ret = LTTNG_OK; |
00e2e675 | 463 | goto error; |
f1e16794 DG |
464 | } |
465 | ||
2bba9e53 DG |
466 | /* Don't monitor the streams on the consumer if in flight recorder. */ |
467 | if (session->output_traces) { | |
468 | monitor = 1; | |
469 | } | |
470 | ||
00e2e675 DG |
471 | DBG("Sending session stream to kernel consumer"); |
472 | ||
609af759 | 473 | if (session->metadata_stream_fd >= 0 && session->metadata) { |
2bba9e53 | 474 | ret = kernel_consumer_add_metadata(sock, session, monitor); |
f1e16794 | 475 | if (ret < 0) { |
f1e16794 DG |
476 | goto error; |
477 | } | |
f1e16794 DG |
478 | } |
479 | ||
00e2e675 | 480 | /* Send channel and streams of it */ |
f1e16794 | 481 | cds_list_for_each_entry(chan, &session->channel_list.head, list) { |
1fc1b7c8 | 482 | ret = kernel_consumer_send_channel_streams(sock, chan, session, |
2bba9e53 | 483 | monitor); |
f1e16794 DG |
484 | if (ret < 0) { |
485 | goto error; | |
486 | } | |
601262d6 JD |
487 | if (monitor) { |
488 | /* | |
489 | * Inform the relay that all the streams for the | |
490 | * channel were sent. | |
491 | */ | |
e1f3997a | 492 | ret = kernel_consumer_streams_sent(sock, session, chan->key); |
601262d6 JD |
493 | if (ret < 0) { |
494 | goto error; | |
495 | } | |
496 | } | |
f1e16794 DG |
497 | } |
498 | ||
00e2e675 | 499 | DBG("Kernel consumer FDs of metadata and channel streams sent"); |
f1e16794 | 500 | |
4ce9ff51 | 501 | session->consumer_fds_sent = 1; |
f1e16794 DG |
502 | return 0; |
503 | ||
504 | error: | |
505 | return ret; | |
506 | } | |
07b86b52 JD |
507 | |
508 | int kernel_consumer_destroy_channel(struct consumer_socket *socket, | |
509 | struct ltt_kernel_channel *channel) | |
510 | { | |
511 | int ret; | |
512 | struct lttcomm_consumer_msg msg; | |
513 | ||
514 | assert(channel); | |
515 | assert(socket); | |
07b86b52 | 516 | |
e1f3997a | 517 | DBG("Sending kernel consumer destroy channel key %" PRIu64, channel->key); |
07b86b52 | 518 | |
53efb85a | 519 | memset(&msg, 0, sizeof(msg)); |
07b86b52 | 520 | msg.cmd_type = LTTNG_CONSUMER_DESTROY_CHANNEL; |
e1f3997a | 521 | msg.u.destroy_channel.key = channel->key; |
07b86b52 JD |
522 | |
523 | pthread_mutex_lock(socket->lock); | |
524 | health_code_update(); | |
525 | ||
526 | ret = consumer_send_msg(socket, &msg); | |
527 | if (ret < 0) { | |
528 | goto error; | |
529 | } | |
530 | ||
531 | error: | |
532 | health_code_update(); | |
533 | pthread_mutex_unlock(socket->lock); | |
534 | return ret; | |
535 | } | |
536 | ||
537 | int kernel_consumer_destroy_metadata(struct consumer_socket *socket, | |
538 | struct ltt_kernel_metadata *metadata) | |
539 | { | |
540 | int ret; | |
541 | struct lttcomm_consumer_msg msg; | |
542 | ||
543 | assert(metadata); | |
544 | assert(socket); | |
07b86b52 | 545 | |
d40f0359 | 546 | DBG("Sending kernel consumer destroy channel key %" PRIu64, metadata->key); |
07b86b52 | 547 | |
53efb85a | 548 | memset(&msg, 0, sizeof(msg)); |
07b86b52 | 549 | msg.cmd_type = LTTNG_CONSUMER_DESTROY_CHANNEL; |
d40f0359 | 550 | msg.u.destroy_channel.key = metadata->key; |
07b86b52 JD |
551 | |
552 | pthread_mutex_lock(socket->lock); | |
553 | health_code_update(); | |
554 | ||
555 | ret = consumer_send_msg(socket, &msg); | |
556 | if (ret < 0) { | |
557 | goto error; | |
558 | } | |
559 | ||
560 | error: | |
561 | health_code_update(); | |
562 | pthread_mutex_unlock(socket->lock); | |
563 | return ret; | |
564 | } |