Commit | Line | Data |
---|---|---|
48842b30 DG |
1 | /* |
2 | * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca> | |
3 | * | |
d14d33bf AM |
4 | * This program is free software; you can redistribute it and/or modify |
5 | * it under the terms of the GNU General Public License, version 2 only, | |
6 | * as published by the Free Software Foundation. | |
48842b30 | 7 | * |
d14d33bf AM |
8 | * This program is distributed in the hope that it will be useful, |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
48842b30 | 12 | * |
d14d33bf AM |
13 | * You should have received a copy of the GNU General Public License along |
14 | * with this program; if not, write to the Free Software Foundation, Inc., | |
15 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
48842b30 DG |
16 | */ |
17 | ||
6c1c0768 | 18 | #define _LGPL_SOURCE |
48842b30 DG |
19 | #include <errno.h> |
20 | #include <stdio.h> | |
21 | #include <stdlib.h> | |
22 | #include <string.h> | |
23 | #include <unistd.h> | |
d88aee68 | 24 | #include <inttypes.h> |
48842b30 | 25 | |
990570ed | 26 | #include <common/common.h> |
c8fea79c | 27 | #include <common/consumer/consumer.h> |
990570ed | 28 | #include <common/defaults.h> |
48842b30 | 29 | |
00e2e675 | 30 | #include "consumer.h" |
8782cc74 | 31 | #include "health-sessiond.h" |
48842b30 | 32 | #include "ust-consumer.h" |
331744e3 JD |
33 | #include "buffer-registry.h" |
34 | #include "session.h" | |
48842b30 DG |
35 | |
36 | /* | |
ffe60014 DG |
37 | * Return allocated full pathname of the session using the consumer trace path |
38 | * and subdir if available. On a successful allocation, the directory of the | |
39 | * trace is created with the session credentials. | |
40 | * | |
41 | * The caller can safely free(3) the returned value. On error, NULL is | |
42 | * returned. | |
48842b30 | 43 | */ |
ffe60014 DG |
44 | static char *setup_trace_path(struct consumer_output *consumer, |
45 | struct ust_app_session *ua_sess) | |
48842b30 | 46 | { |
ffe60014 DG |
47 | int ret; |
48 | char *pathname; | |
37278a1e | 49 | |
ffe60014 DG |
50 | assert(consumer); |
51 | assert(ua_sess); | |
00e2e675 | 52 | |
840cb59c | 53 | health_code_update(); |
ca03de58 | 54 | |
ffe60014 DG |
55 | /* Allocate our self the string to make sure we never exceed PATH_MAX. */ |
56 | pathname = zmalloc(PATH_MAX); | |
57 | if (!pathname) { | |
48842b30 DG |
58 | goto error; |
59 | } | |
00e2e675 | 60 | |
ffe60014 DG |
61 | /* Get correct path name destination */ |
62 | if (consumer->type == CONSUMER_DST_LOCAL) { | |
63 | /* Set application path to the destination path */ | |
dec56f6c | 64 | ret = snprintf(pathname, PATH_MAX, "%s%s%s", |
ffe60014 DG |
65 | consumer->dst.trace_path, consumer->subdir, ua_sess->path); |
66 | if (ret < 0) { | |
67 | PERROR("snprintf channel path"); | |
68 | goto error; | |
69 | } | |
ca03de58 | 70 | |
ffe60014 | 71 | /* Create directory. Ignore if exist. */ |
7972aab2 DG |
72 | ret = run_as_mkdir_recursive(pathname, S_IRWXU | S_IRWXG, |
73 | ua_sess->euid, ua_sess->egid); | |
ffe60014 | 74 | if (ret < 0) { |
df5b86c8 | 75 | if (errno != EEXIST) { |
ffe60014 DG |
76 | ERR("Trace directory creation error"); |
77 | goto error; | |
78 | } | |
79 | } | |
80 | } else { | |
dec56f6c | 81 | ret = snprintf(pathname, PATH_MAX, "%s%s", consumer->subdir, |
ffe60014 DG |
82 | ua_sess->path); |
83 | if (ret < 0) { | |
84 | PERROR("snprintf channel path"); | |
85 | goto error; | |
86 | } | |
48842b30 DG |
87 | } |
88 | ||
ffe60014 | 89 | return pathname; |
ca03de58 | 90 | |
37278a1e | 91 | error: |
ffe60014 DG |
92 | free(pathname); |
93 | return NULL; | |
37278a1e DG |
94 | } |
95 | ||
96 | /* | |
ffe60014 DG |
97 | * Send a single channel to the consumer using command ADD_CHANNEL. |
98 | * | |
7972aab2 | 99 | * Consumer socket lock MUST be acquired before calling this. |
37278a1e | 100 | */ |
ffe60014 DG |
101 | static int ask_channel_creation(struct ust_app_session *ua_sess, |
102 | struct ust_app_channel *ua_chan, struct consumer_output *consumer, | |
7972aab2 | 103 | struct consumer_socket *socket, struct ust_registry_session *registry) |
37278a1e | 104 | { |
0c759fc9 | 105 | int ret, output; |
7972aab2 DG |
106 | uint32_t chan_id; |
107 | uint64_t key, chan_reg_key; | |
ffe60014 | 108 | char *pathname = NULL; |
37278a1e | 109 | struct lttcomm_consumer_msg msg; |
7972aab2 | 110 | struct ust_registry_channel *chan_reg; |
d7ba1388 | 111 | char shm_path[PATH_MAX] = ""; |
3d071855 | 112 | char root_shm_path[PATH_MAX] = ""; |
37278a1e | 113 | |
ffe60014 DG |
114 | assert(ua_sess); |
115 | assert(ua_chan); | |
116 | assert(socket); | |
37278a1e | 117 | assert(consumer); |
7972aab2 | 118 | assert(registry); |
ffe60014 DG |
119 | |
120 | DBG2("Asking UST consumer for channel"); | |
121 | ||
122 | /* Get and create full trace path of session. */ | |
10a50311 JD |
123 | if (ua_sess->output_traces) { |
124 | pathname = setup_trace_path(consumer, ua_sess); | |
125 | if (!pathname) { | |
126 | ret = -1; | |
127 | goto error; | |
128 | } | |
ffe60014 DG |
129 | } |
130 | ||
7972aab2 DG |
131 | /* Depending on the buffer type, a different channel key is used. */ |
132 | if (ua_sess->buffer_type == LTTNG_BUFFER_PER_UID) { | |
133 | chan_reg_key = ua_chan->tracing_channel_id; | |
134 | } else { | |
135 | chan_reg_key = ua_chan->key; | |
136 | } | |
137 | ||
138 | if (ua_chan->attr.type == LTTNG_UST_CHAN_METADATA) { | |
139 | chan_id = -1U; | |
d7ba1388 MD |
140 | /* |
141 | * Metadata channels shm_path (buffers) are handled within | |
142 | * session daemon. Consumer daemon should not try to create | |
143 | * those buffer files. | |
144 | */ | |
7972aab2 DG |
145 | } else { |
146 | chan_reg = ust_registry_channel_find(registry, chan_reg_key); | |
147 | assert(chan_reg); | |
148 | chan_id = chan_reg->chan_id; | |
d7ba1388 MD |
149 | if (ua_sess->shm_path[0]) { |
150 | strncpy(shm_path, ua_sess->shm_path, sizeof(shm_path)); | |
151 | shm_path[sizeof(shm_path) - 1] = '\0'; | |
152 | strncat(shm_path, "/", | |
153 | sizeof(shm_path) - strlen(shm_path) - 1); | |
154 | strncat(shm_path, ua_chan->name, | |
155 | sizeof(shm_path) - strlen(shm_path) - 1); | |
156 | strncat(shm_path, "_", | |
157 | sizeof(shm_path) - strlen(shm_path) - 1); | |
158 | } | |
3d071855 MD |
159 | strncpy(root_shm_path, ua_sess->root_shm_path, sizeof(root_shm_path)); |
160 | root_shm_path[sizeof(root_shm_path) - 1] = '\0'; | |
7972aab2 DG |
161 | } |
162 | ||
0c759fc9 DG |
163 | switch (ua_chan->attr.output) { |
164 | case LTTNG_UST_MMAP: | |
165 | default: | |
166 | output = LTTNG_EVENT_MMAP; | |
167 | break; | |
168 | } | |
169 | ||
ffe60014 DG |
170 | consumer_init_ask_channel_comm_msg(&msg, |
171 | ua_chan->attr.subbuf_size, | |
172 | ua_chan->attr.num_subbuf, | |
173 | ua_chan->attr.overwrite, | |
174 | ua_chan->attr.switch_timer_interval, | |
175 | ua_chan->attr.read_timer_interval, | |
ecc48a90 | 176 | ua_sess->live_timer_interval, |
0c759fc9 | 177 | output, |
ffe60014 | 178 | (int) ua_chan->attr.type, |
7972aab2 | 179 | ua_sess->tracing_id, |
ca22feea | 180 | pathname, |
ffe60014 | 181 | ua_chan->name, |
7972aab2 DG |
182 | ua_sess->euid, |
183 | ua_sess->egid, | |
ffe60014 DG |
184 | consumer->net_seq_index, |
185 | ua_chan->key, | |
7972aab2 | 186 | registry->uuid, |
1624d5b7 JD |
187 | chan_id, |
188 | ua_chan->tracefile_size, | |
2bba9e53 | 189 | ua_chan->tracefile_count, |
1950109e | 190 | ua_sess->id, |
567eb353 | 191 | ua_sess->output_traces, |
d7ba1388 | 192 | ua_sess->uid, |
3d071855 | 193 | root_shm_path, shm_path); |
37278a1e | 194 | |
840cb59c | 195 | health_code_update(); |
ca03de58 | 196 | |
52898cb1 | 197 | ret = consumer_socket_send(socket, &msg, sizeof(msg)); |
37278a1e DG |
198 | if (ret < 0) { |
199 | goto error; | |
200 | } | |
201 | ||
ffe60014 DG |
202 | ret = consumer_recv_status_channel(socket, &key, |
203 | &ua_chan->expected_stream_count); | |
204 | if (ret < 0) { | |
205 | goto error; | |
206 | } | |
207 | /* Communication protocol error. */ | |
208 | assert(key == ua_chan->key); | |
209 | /* We need at least one where 1 stream for 1 cpu. */ | |
10a50311 JD |
210 | if (ua_sess->output_traces) { |
211 | assert(ua_chan->expected_stream_count > 0); | |
212 | } | |
ffe60014 | 213 | |
d88aee68 | 214 | DBG2("UST ask channel %" PRIu64 " successfully done with %u stream(s)", key, |
ffe60014 | 215 | ua_chan->expected_stream_count); |
ca03de58 | 216 | |
37278a1e | 217 | error: |
ffe60014 DG |
218 | free(pathname); |
219 | health_code_update(); | |
37278a1e DG |
220 | return ret; |
221 | } | |
222 | ||
223 | /* | |
ffe60014 DG |
224 | * Ask consumer to create a channel for a given session. |
225 | * | |
226 | * Returns 0 on success else a negative value. | |
37278a1e | 227 | */ |
ffe60014 DG |
228 | int ust_consumer_ask_channel(struct ust_app_session *ua_sess, |
229 | struct ust_app_channel *ua_chan, struct consumer_output *consumer, | |
7972aab2 | 230 | struct consumer_socket *socket, struct ust_registry_session *registry) |
37278a1e DG |
231 | { |
232 | int ret; | |
37278a1e | 233 | |
ffe60014 DG |
234 | assert(ua_sess); |
235 | assert(ua_chan); | |
236 | assert(consumer); | |
237 | assert(socket); | |
7972aab2 | 238 | assert(registry); |
f50f23d9 | 239 | |
d9078d0c DG |
240 | if (!consumer->enabled) { |
241 | ret = -LTTNG_ERR_NO_CONSUMER; | |
242 | DBG3("Consumer is disabled"); | |
243 | goto error; | |
244 | } | |
245 | ||
ffe60014 | 246 | pthread_mutex_lock(socket->lock); |
7972aab2 | 247 | ret = ask_channel_creation(ua_sess, ua_chan, consumer, socket, registry); |
2898de39 | 248 | pthread_mutex_unlock(socket->lock); |
37278a1e DG |
249 | if (ret < 0) { |
250 | goto error; | |
251 | } | |
252 | ||
48842b30 DG |
253 | error: |
254 | return ret; | |
255 | } | |
256 | ||
257 | /* | |
ffe60014 DG |
258 | * Send a get channel command to consumer using the given channel key. The |
259 | * channel object is populated and the stream list. | |
260 | * | |
261 | * Return 0 on success else a negative value. | |
48842b30 | 262 | */ |
ffe60014 DG |
263 | int ust_consumer_get_channel(struct consumer_socket *socket, |
264 | struct ust_app_channel *ua_chan) | |
48842b30 | 265 | { |
ffe60014 | 266 | int ret; |
37278a1e | 267 | struct lttcomm_consumer_msg msg; |
48842b30 | 268 | |
ffe60014 DG |
269 | assert(ua_chan); |
270 | assert(socket); | |
48842b30 | 271 | |
53efb85a | 272 | memset(&msg, 0, sizeof(msg)); |
ffe60014 DG |
273 | msg.cmd_type = LTTNG_CONSUMER_GET_CHANNEL; |
274 | msg.u.get_channel.key = ua_chan->key; | |
37278a1e | 275 | |
ffe60014 | 276 | pthread_mutex_lock(socket->lock); |
840cb59c | 277 | health_code_update(); |
ca03de58 | 278 | |
ffe60014 DG |
279 | /* Send command and wait for OK reply. */ |
280 | ret = consumer_send_msg(socket, &msg); | |
37278a1e DG |
281 | if (ret < 0) { |
282 | goto error; | |
283 | } | |
284 | ||
ffe60014 | 285 | /* First, get the channel from consumer. */ |
9363801e | 286 | ret = ustctl_recv_channel_from_consumer(*socket->fd_ptr, &ua_chan->obj); |
37278a1e | 287 | if (ret < 0) { |
ffe60014 DG |
288 | if (ret != -EPIPE) { |
289 | ERR("Error recv channel from consumer %d with ret %d", | |
9363801e | 290 | *socket->fd_ptr, ret); |
ffe60014 DG |
291 | } else { |
292 | DBG3("UST app recv channel from consumer. Consumer is dead."); | |
293 | } | |
37278a1e DG |
294 | goto error; |
295 | } | |
00e2e675 | 296 | |
ffe60014 DG |
297 | /* Next, get all streams. */ |
298 | while (1) { | |
299 | struct ust_app_stream *stream; | |
ca03de58 | 300 | |
ffe60014 DG |
301 | /* Create UST stream */ |
302 | stream = ust_app_alloc_stream(); | |
303 | if (stream == NULL) { | |
304 | ret = -ENOMEM; | |
48842b30 DG |
305 | goto error; |
306 | } | |
307 | ||
ffe60014 | 308 | /* Stream object is populated by this call if successful. */ |
9363801e | 309 | ret = ustctl_recv_stream_from_consumer(*socket->fd_ptr, &stream->obj); |
37278a1e | 310 | if (ret < 0) { |
ffe60014 DG |
311 | free(stream); |
312 | if (ret == -LTTNG_UST_ERR_NOENT) { | |
313 | DBG3("UST app consumer has no more stream available"); | |
314 | ret = 0; | |
315 | break; | |
316 | } | |
317 | if (ret != -EPIPE) { | |
318 | ERR("Recv stream from consumer %d with ret %d", | |
9363801e | 319 | *socket->fd_ptr, ret); |
ffe60014 DG |
320 | } else { |
321 | DBG3("UST app recv stream from consumer. Consumer is dead."); | |
00e2e675 | 322 | } |
48842b30 DG |
323 | goto error; |
324 | } | |
37278a1e | 325 | |
ffe60014 DG |
326 | /* Order is important this is why a list is used. */ |
327 | cds_list_add_tail(&stream->list, &ua_chan->streams.head); | |
328 | ua_chan->streams.count++; | |
37278a1e | 329 | |
5368d366 | 330 | DBG2("UST app stream %d received successfully", ua_chan->streams.count); |
ffe60014 DG |
331 | } |
332 | ||
333 | /* This MUST match or else we have a synchronization problem. */ | |
334 | assert(ua_chan->expected_stream_count == ua_chan->streams.count); | |
ca03de58 | 335 | |
ffe60014 DG |
336 | /* Wait for confirmation that we can proceed with the streams. */ |
337 | ret = consumer_recv_status_reply(socket); | |
37278a1e DG |
338 | if (ret < 0) { |
339 | goto error; | |
340 | } | |
341 | ||
342 | error: | |
ffe60014 DG |
343 | health_code_update(); |
344 | pthread_mutex_unlock(socket->lock); | |
37278a1e DG |
345 | return ret; |
346 | } | |
347 | ||
348 | /* | |
ffe60014 DG |
349 | * Send a destroy channel command to consumer using the given channel key. |
350 | * | |
351 | * Note that this command MUST be used prior to a successful | |
352 | * LTTNG_CONSUMER_GET_CHANNEL because once this command is done successfully, | |
353 | * the streams are dispatched to the consumer threads and MUST be teardown | |
354 | * through the hang up process. | |
355 | * | |
356 | * Return 0 on success else a negative value. | |
37278a1e | 357 | */ |
ffe60014 DG |
358 | int ust_consumer_destroy_channel(struct consumer_socket *socket, |
359 | struct ust_app_channel *ua_chan) | |
37278a1e | 360 | { |
ffe60014 DG |
361 | int ret; |
362 | struct lttcomm_consumer_msg msg; | |
a4b92340 | 363 | |
ffe60014 DG |
364 | assert(ua_chan); |
365 | assert(socket); | |
37278a1e | 366 | |
53efb85a | 367 | memset(&msg, 0, sizeof(msg)); |
ffe60014 DG |
368 | msg.cmd_type = LTTNG_CONSUMER_DESTROY_CHANNEL; |
369 | msg.u.destroy_channel.key = ua_chan->key; | |
173af62f | 370 | |
ffe60014 DG |
371 | pthread_mutex_lock(socket->lock); |
372 | health_code_update(); | |
37278a1e | 373 | |
ffe60014 | 374 | ret = consumer_send_msg(socket, &msg); |
37278a1e DG |
375 | if (ret < 0) { |
376 | goto error; | |
48842b30 DG |
377 | } |
378 | ||
ffe60014 DG |
379 | error: |
380 | health_code_update(); | |
381 | pthread_mutex_unlock(socket->lock); | |
382 | return ret; | |
383 | } | |
aeb96892 | 384 | |
ffe60014 DG |
385 | /* |
386 | * Send a given stream to UST tracer. | |
387 | * | |
388 | * On success return 0 else a negative value. | |
389 | */ | |
390 | int ust_consumer_send_stream_to_ust(struct ust_app *app, | |
391 | struct ust_app_channel *channel, struct ust_app_stream *stream) | |
392 | { | |
393 | int ret; | |
394 | ||
395 | assert(app); | |
396 | assert(stream); | |
397 | assert(channel); | |
398 | ||
399 | DBG2("UST consumer send stream to app %d", app->sock); | |
400 | ||
401 | /* Relay stream to application. */ | |
fb45065e | 402 | pthread_mutex_lock(&app->sock_lock); |
ffe60014 | 403 | ret = ustctl_send_stream_to_ust(app->sock, channel->obj, stream->obj); |
fb45065e | 404 | pthread_mutex_unlock(&app->sock_lock); |
ffe60014 DG |
405 | if (ret < 0) { |
406 | if (ret != -EPIPE && ret != -LTTNG_UST_ERR_EXITING) { | |
8cf93def DG |
407 | ERR("ustctl send stream handle %d to app pid: %d with ret %d", |
408 | stream->obj->handle, app->pid, ret); | |
ffe60014 DG |
409 | } else { |
410 | DBG3("UST app send stream to ust failed. Application is dead."); | |
48842b30 | 411 | } |
ffe60014 | 412 | goto error; |
48842b30 | 413 | } |
d0b96690 | 414 | channel->handle = channel->obj->handle; |
48842b30 | 415 | |
ffe60014 DG |
416 | error: |
417 | return ret; | |
418 | } | |
419 | ||
420 | /* | |
421 | * Send channel previously received from the consumer to the UST tracer. | |
422 | * | |
423 | * On success return 0 else a negative value. | |
424 | */ | |
425 | int ust_consumer_send_channel_to_ust(struct ust_app *app, | |
426 | struct ust_app_session *ua_sess, struct ust_app_channel *channel) | |
427 | { | |
428 | int ret; | |
429 | ||
430 | assert(app); | |
431 | assert(ua_sess); | |
432 | assert(channel); | |
433 | assert(channel->obj); | |
434 | ||
7972aab2 DG |
435 | DBG2("UST app send channel to sock %d pid %d (name: %s, key: %" PRIu64 ")", |
436 | app->sock, app->pid, channel->name, channel->tracing_channel_id); | |
48842b30 | 437 | |
ffe60014 | 438 | /* Send stream to application. */ |
fb45065e | 439 | pthread_mutex_lock(&app->sock_lock); |
ffe60014 | 440 | ret = ustctl_send_channel_to_ust(app->sock, ua_sess->handle, channel->obj); |
fb45065e | 441 | pthread_mutex_unlock(&app->sock_lock); |
ffe60014 DG |
442 | if (ret < 0) { |
443 | if (ret != -EPIPE && ret != -LTTNG_UST_ERR_EXITING) { | |
444 | ERR("Error ustctl send channel %s to app pid: %d with ret %d", | |
445 | channel->name, app->pid, ret); | |
446 | } else { | |
447 | DBG3("UST app send channel to ust failed. Application is dead."); | |
448 | } | |
449 | goto error; | |
450 | } | |
48842b30 DG |
451 | |
452 | error: | |
453 | return ret; | |
454 | } | |
331744e3 JD |
455 | |
456 | /* | |
457 | * Handle the metadata requests from the UST consumer | |
458 | * | |
459 | * Return 0 on success else a negative value. | |
460 | */ | |
461 | int ust_consumer_metadata_request(struct consumer_socket *socket) | |
462 | { | |
463 | int ret; | |
464 | ssize_t ret_push; | |
465 | struct lttcomm_metadata_request_msg request; | |
466 | struct buffer_reg_uid *reg_uid; | |
467 | struct ust_registry_session *ust_reg; | |
468 | struct lttcomm_consumer_msg msg; | |
469 | ||
470 | assert(socket); | |
471 | ||
472 | rcu_read_lock(); | |
331744e3 JD |
473 | health_code_update(); |
474 | ||
475 | /* Wait for a metadata request */ | |
dc2bbdae | 476 | pthread_mutex_lock(socket->lock); |
52898cb1 | 477 | ret = consumer_socket_recv(socket, &request, sizeof(request)); |
dc2bbdae | 478 | pthread_mutex_unlock(socket->lock); |
52898cb1 | 479 | if (ret < 0) { |
331744e3 JD |
480 | goto end; |
481 | } | |
482 | ||
1950109e | 483 | DBG("Metadata request received for session %" PRIu64 ", key %" PRIu64, |
331744e3 JD |
484 | request.session_id, request.key); |
485 | ||
486 | reg_uid = buffer_reg_uid_find(request.session_id, | |
487 | request.bits_per_long, request.uid); | |
488 | if (reg_uid) { | |
489 | ust_reg = reg_uid->registry->reg.ust; | |
490 | } else { | |
491 | struct buffer_reg_pid *reg_pid = | |
1950109e | 492 | buffer_reg_pid_find(request.session_id_per_pid); |
331744e3 | 493 | if (!reg_pid) { |
1950109e JD |
494 | DBG("PID registry not found for session id %" PRIu64, |
495 | request.session_id_per_pid); | |
331744e3 | 496 | |
53efb85a | 497 | memset(&msg, 0, sizeof(msg)); |
331744e3 JD |
498 | msg.cmd_type = LTTNG_ERR_UND; |
499 | (void) consumer_send_msg(socket, &msg); | |
500 | /* | |
501 | * This is possible since the session might have been destroyed | |
502 | * during a consumer metadata request. So here, return gracefully | |
503 | * because the destroy session will push the remaining metadata to | |
504 | * the consumer. | |
505 | */ | |
506 | ret = 0; | |
507 | goto end; | |
508 | } | |
509 | ust_reg = reg_pid->registry->reg.ust; | |
510 | } | |
511 | assert(ust_reg); | |
512 | ||
dc2bbdae | 513 | pthread_mutex_lock(&ust_reg->lock); |
331744e3 | 514 | ret_push = ust_app_push_metadata(ust_reg, socket, 1); |
dc2bbdae | 515 | pthread_mutex_unlock(&ust_reg->lock); |
2c57e06d MD |
516 | if (ret_push == -EPIPE) { |
517 | DBG("Application or relay closed while pushing metadata"); | |
518 | } else if (ret_push < 0) { | |
331744e3 JD |
519 | ERR("Pushing metadata"); |
520 | ret = -1; | |
521 | goto end; | |
2c57e06d MD |
522 | } else { |
523 | DBG("UST Consumer metadata pushed successfully"); | |
331744e3 | 524 | } |
331744e3 JD |
525 | ret = 0; |
526 | ||
527 | end: | |
331744e3 JD |
528 | rcu_read_unlock(); |
529 | return ret; | |
530 | } |