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ab0ee2ca JG |
1 | /* |
2 | * Copyright (C) 2017 - Jérémie Galarneau <jeremie.galarneau@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 _LGPL_SOURCE | |
19 | #include <lttng/trigger/trigger.h> | |
20 | #include <lttng/notification/channel-internal.h> | |
21 | #include <lttng/notification/notification-internal.h> | |
22 | #include <lttng/condition/condition-internal.h> | |
23 | #include <lttng/condition/buffer-usage-internal.h> | |
24 | #include <common/error.h> | |
25 | #include <common/config/session-config.h> | |
26 | #include <common/defaults.h> | |
27 | #include <common/utils.h> | |
ab0ee2ca JG |
28 | #include <common/align.h> |
29 | #include <common/time.h> | |
30 | #include <sys/eventfd.h> | |
31 | #include <sys/stat.h> | |
32 | #include <time.h> | |
33 | #include <signal.h> | |
34 | ||
35 | #include "notification-thread.h" | |
36 | #include "notification-thread-events.h" | |
37 | #include "notification-thread-commands.h" | |
38 | #include "lttng-sessiond.h" | |
39 | #include "health-sessiond.h" | |
40 | ||
41 | #include <urcu.h> | |
42 | #include <urcu/list.h> | |
43 | #include <urcu/rculfhash.h> | |
44 | ||
ab0ee2ca JG |
45 | /* |
46 | * Destroy the thread data previously created by the init function. | |
47 | */ | |
48 | void notification_thread_handle_destroy( | |
49 | struct notification_thread_handle *handle) | |
50 | { | |
51 | int ret; | |
ab0ee2ca JG |
52 | |
53 | if (!handle) { | |
54 | goto end; | |
55 | } | |
56 | ||
8f5e7d40 | 57 | assert(cds_list_empty(&handle->cmd_queue.list)); |
ab0ee2ca JG |
58 | pthread_mutex_destroy(&handle->cmd_queue.lock); |
59 | ||
800c5e10 JR |
60 | if (handle->cmd_queue.event_pipe) { |
61 | lttng_pipe_destroy(handle->cmd_queue.event_pipe); | |
62 | } | |
ab0ee2ca JG |
63 | if (handle->channel_monitoring_pipes.ust32_consumer >= 0) { |
64 | ret = close(handle->channel_monitoring_pipes.ust32_consumer); | |
65 | if (ret) { | |
66 | PERROR("close 32-bit consumer channel monitoring pipe"); | |
67 | } | |
68 | } | |
69 | if (handle->channel_monitoring_pipes.ust64_consumer >= 0) { | |
70 | ret = close(handle->channel_monitoring_pipes.ust64_consumer); | |
71 | if (ret) { | |
72 | PERROR("close 64-bit consumer channel monitoring pipe"); | |
73 | } | |
74 | } | |
75 | if (handle->channel_monitoring_pipes.kernel_consumer >= 0) { | |
76 | ret = close(handle->channel_monitoring_pipes.kernel_consumer); | |
77 | if (ret) { | |
78 | PERROR("close kernel consumer channel monitoring pipe"); | |
79 | } | |
80 | } | |
81 | end: | |
82 | free(handle); | |
83 | } | |
84 | ||
85 | struct notification_thread_handle *notification_thread_handle_create( | |
86 | struct lttng_pipe *ust32_channel_monitor_pipe, | |
87 | struct lttng_pipe *ust64_channel_monitor_pipe, | |
88 | struct lttng_pipe *kernel_channel_monitor_pipe) | |
89 | { | |
90 | int ret; | |
91 | struct notification_thread_handle *handle; | |
800c5e10 | 92 | struct lttng_pipe *event_pipe = NULL; |
ab0ee2ca JG |
93 | |
94 | handle = zmalloc(sizeof(*handle)); | |
95 | if (!handle) { | |
96 | goto end; | |
97 | } | |
98 | ||
93563adf | 99 | event_pipe = lttng_pipe_open(FD_CLOEXEC); |
800c5e10 JR |
100 | if (!event_pipe) { |
101 | ERR("event_pipe creation"); | |
ab0ee2ca JG |
102 | goto error; |
103 | } | |
800c5e10 JR |
104 | |
105 | handle->cmd_queue.event_pipe = event_pipe; | |
106 | event_pipe = NULL; | |
107 | ||
ab0ee2ca JG |
108 | CDS_INIT_LIST_HEAD(&handle->cmd_queue.list); |
109 | ret = pthread_mutex_init(&handle->cmd_queue.lock, NULL); | |
110 | if (ret) { | |
111 | goto error; | |
112 | } | |
113 | ||
114 | if (ust32_channel_monitor_pipe) { | |
115 | handle->channel_monitoring_pipes.ust32_consumer = | |
116 | lttng_pipe_release_readfd( | |
117 | ust32_channel_monitor_pipe); | |
118 | if (handle->channel_monitoring_pipes.ust32_consumer < 0) { | |
119 | goto error; | |
120 | } | |
121 | } else { | |
122 | handle->channel_monitoring_pipes.ust32_consumer = -1; | |
123 | } | |
124 | if (ust64_channel_monitor_pipe) { | |
125 | handle->channel_monitoring_pipes.ust64_consumer = | |
126 | lttng_pipe_release_readfd( | |
127 | ust64_channel_monitor_pipe); | |
128 | if (handle->channel_monitoring_pipes.ust64_consumer < 0) { | |
129 | goto error; | |
130 | } | |
131 | } else { | |
132 | handle->channel_monitoring_pipes.ust64_consumer = -1; | |
133 | } | |
134 | if (kernel_channel_monitor_pipe) { | |
135 | handle->channel_monitoring_pipes.kernel_consumer = | |
136 | lttng_pipe_release_readfd( | |
137 | kernel_channel_monitor_pipe); | |
138 | if (handle->channel_monitoring_pipes.kernel_consumer < 0) { | |
139 | goto error; | |
140 | } | |
141 | } else { | |
142 | handle->channel_monitoring_pipes.kernel_consumer = -1; | |
143 | } | |
144 | end: | |
145 | return handle; | |
146 | error: | |
800c5e10 | 147 | lttng_pipe_destroy(event_pipe); |
ab0ee2ca JG |
148 | notification_thread_handle_destroy(handle); |
149 | return NULL; | |
150 | } | |
151 | ||
152 | static | |
153 | char *get_notification_channel_sock_path(void) | |
154 | { | |
155 | int ret; | |
156 | bool is_root = !getuid(); | |
157 | char *sock_path; | |
158 | ||
159 | sock_path = zmalloc(LTTNG_PATH_MAX); | |
160 | if (!sock_path) { | |
161 | goto error; | |
162 | } | |
163 | ||
164 | if (is_root) { | |
165 | ret = snprintf(sock_path, LTTNG_PATH_MAX, | |
166 | DEFAULT_GLOBAL_NOTIFICATION_CHANNEL_UNIX_SOCK); | |
167 | if (ret < 0) { | |
168 | goto error; | |
169 | } | |
170 | } else { | |
171 | char *home_path = utils_get_home_dir(); | |
172 | ||
173 | if (!home_path) { | |
174 | ERR("Can't get HOME directory for socket creation"); | |
175 | goto error; | |
176 | } | |
177 | ||
178 | ret = snprintf(sock_path, LTTNG_PATH_MAX, | |
179 | DEFAULT_HOME_NOTIFICATION_CHANNEL_UNIX_SOCK, | |
180 | home_path); | |
181 | if (ret < 0) { | |
182 | goto error; | |
183 | } | |
184 | } | |
185 | ||
186 | return sock_path; | |
187 | error: | |
188 | free(sock_path); | |
189 | return NULL; | |
190 | } | |
191 | ||
192 | static | |
193 | void notification_channel_socket_destroy(int fd) | |
194 | { | |
195 | int ret; | |
196 | char *sock_path = get_notification_channel_sock_path(); | |
197 | ||
198 | DBG("[notification-thread] Destroying notification channel socket"); | |
199 | ||
200 | if (sock_path) { | |
201 | ret = unlink(sock_path); | |
202 | free(sock_path); | |
203 | if (ret < 0) { | |
204 | PERROR("unlink notification channel socket"); | |
205 | } | |
206 | } | |
207 | ||
208 | ret = close(fd); | |
209 | if (ret) { | |
210 | PERROR("close notification channel socket"); | |
211 | } | |
212 | } | |
213 | ||
214 | static | |
215 | int notification_channel_socket_create(void) | |
216 | { | |
217 | int fd = -1, ret; | |
218 | char *sock_path = get_notification_channel_sock_path(); | |
219 | ||
220 | DBG("[notification-thread] Creating notification channel UNIX socket at %s", | |
221 | sock_path); | |
222 | ||
223 | ret = lttcomm_create_unix_sock(sock_path); | |
224 | if (ret < 0) { | |
225 | ERR("[notification-thread] Failed to create notification socket"); | |
226 | goto error; | |
227 | } | |
228 | fd = ret; | |
229 | ||
230 | ret = chmod(sock_path, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP); | |
231 | if (ret < 0) { | |
232 | ERR("Set file permissions failed: %s", sock_path); | |
233 | PERROR("chmod notification channel socket"); | |
234 | goto error; | |
235 | } | |
236 | ||
237 | if (getuid() == 0) { | |
d7458e2f JR |
238 | gid_t gid; |
239 | ||
240 | ret = utils_get_group_id(config.tracing_group_name.value, true, | |
241 | &gid); | |
242 | if (ret) { | |
243 | /* Default to root group. */ | |
244 | gid = 0; | |
245 | } | |
246 | ||
247 | ret = chown(sock_path, 0, gid); | |
ab0ee2ca JG |
248 | if (ret) { |
249 | ERR("Failed to set the notification channel socket's group"); | |
250 | ret = -1; | |
251 | goto error; | |
252 | } | |
253 | } | |
254 | ||
255 | DBG("[notification-thread] Notification channel UNIX socket created (fd = %i)", | |
256 | fd); | |
257 | free(sock_path); | |
258 | return fd; | |
259 | error: | |
260 | if (fd >= 0 && close(fd) < 0) { | |
261 | PERROR("close notification channel socket"); | |
262 | } | |
263 | free(sock_path); | |
264 | return ret; | |
265 | } | |
266 | ||
267 | static | |
268 | int init_poll_set(struct lttng_poll_event *poll_set, | |
269 | struct notification_thread_handle *handle, | |
270 | int notification_channel_socket) | |
271 | { | |
272 | int ret; | |
273 | ||
274 | /* | |
275 | * Create pollset with size 5: | |
276 | * - notification channel socket (listen for new connections), | |
277 | * - command queue event fd (internal sessiond commands), | |
278 | * - consumerd (32-bit user space) channel monitor pipe, | |
279 | * - consumerd (64-bit user space) channel monitor pipe, | |
280 | * - consumerd (kernel) channel monitor pipe. | |
281 | */ | |
282 | ret = lttng_poll_create(poll_set, 5, LTTNG_CLOEXEC); | |
283 | if (ret < 0) { | |
284 | goto end; | |
285 | } | |
286 | ||
287 | ret = lttng_poll_add(poll_set, notification_channel_socket, | |
288 | LPOLLIN | LPOLLERR | LPOLLHUP | LPOLLRDHUP); | |
289 | if (ret < 0) { | |
290 | ERR("[notification-thread] Failed to add notification channel socket to pollset"); | |
291 | goto error; | |
292 | } | |
800c5e10 | 293 | ret = lttng_poll_add(poll_set, lttng_pipe_get_readfd(handle->cmd_queue.event_pipe), |
ab0ee2ca JG |
294 | LPOLLIN | LPOLLERR); |
295 | if (ret < 0) { | |
296 | ERR("[notification-thread] Failed to add notification command queue event fd to pollset"); | |
297 | goto error; | |
298 | } | |
299 | ret = lttng_poll_add(poll_set, | |
300 | handle->channel_monitoring_pipes.ust32_consumer, | |
301 | LPOLLIN | LPOLLERR); | |
302 | if (ret < 0) { | |
303 | ERR("[notification-thread] Failed to add ust-32 channel monitoring pipe fd to pollset"); | |
304 | goto error; | |
305 | } | |
306 | ret = lttng_poll_add(poll_set, | |
307 | handle->channel_monitoring_pipes.ust64_consumer, | |
308 | LPOLLIN | LPOLLERR); | |
309 | if (ret < 0) { | |
310 | ERR("[notification-thread] Failed to add ust-64 channel monitoring pipe fd to pollset"); | |
311 | goto error; | |
312 | } | |
313 | if (handle->channel_monitoring_pipes.kernel_consumer < 0) { | |
314 | goto end; | |
315 | } | |
316 | ret = lttng_poll_add(poll_set, | |
317 | handle->channel_monitoring_pipes.kernel_consumer, | |
318 | LPOLLIN | LPOLLERR); | |
319 | if (ret < 0) { | |
320 | ERR("[notification-thread] Failed to add kernel channel monitoring pipe fd to pollset"); | |
321 | goto error; | |
322 | } | |
323 | end: | |
324 | return ret; | |
325 | error: | |
326 | lttng_poll_clean(poll_set); | |
327 | return ret; | |
328 | } | |
329 | ||
330 | static | |
331 | void fini_thread_state(struct notification_thread_state *state) | |
332 | { | |
333 | int ret; | |
334 | ||
335 | if (state->client_socket_ht) { | |
336 | ret = handle_notification_thread_client_disconnect_all(state); | |
337 | assert(!ret); | |
338 | ret = cds_lfht_destroy(state->client_socket_ht, NULL); | |
339 | assert(!ret); | |
340 | } | |
341 | if (state->triggers_ht) { | |
342 | ret = handle_notification_thread_trigger_unregister_all(state); | |
343 | assert(!ret); | |
344 | ret = cds_lfht_destroy(state->triggers_ht, NULL); | |
345 | assert(!ret); | |
346 | } | |
347 | if (state->channel_triggers_ht) { | |
348 | ret = cds_lfht_destroy(state->channel_triggers_ht, NULL); | |
349 | assert(!ret); | |
350 | } | |
351 | if (state->channel_state_ht) { | |
352 | ret = cds_lfht_destroy(state->channel_state_ht, NULL); | |
353 | assert(!ret); | |
354 | } | |
355 | if (state->notification_trigger_clients_ht) { | |
356 | ret = cds_lfht_destroy(state->notification_trigger_clients_ht, | |
357 | NULL); | |
358 | assert(!ret); | |
359 | } | |
360 | if (state->channels_ht) { | |
361 | ret = cds_lfht_destroy(state->channels_ht, | |
362 | NULL); | |
363 | assert(!ret); | |
364 | } | |
365 | ||
366 | if (state->notification_channel_socket >= 0) { | |
367 | notification_channel_socket_destroy( | |
368 | state->notification_channel_socket); | |
369 | } | |
370 | lttng_poll_clean(&state->events); | |
371 | } | |
372 | ||
373 | static | |
374 | int init_thread_state(struct notification_thread_handle *handle, | |
375 | struct notification_thread_state *state) | |
376 | { | |
377 | int ret; | |
378 | ||
379 | memset(state, 0, sizeof(*state)); | |
380 | state->notification_channel_socket = -1; | |
381 | lttng_poll_init(&state->events); | |
382 | ||
383 | ret = notification_channel_socket_create(); | |
384 | if (ret < 0) { | |
385 | goto end; | |
386 | } | |
387 | state->notification_channel_socket = ret; | |
388 | ||
389 | ret = init_poll_set(&state->events, handle, | |
390 | state->notification_channel_socket); | |
391 | if (ret) { | |
392 | goto end; | |
393 | } | |
394 | ||
395 | DBG("[notification-thread] Listening on notification channel socket"); | |
396 | ret = lttcomm_listen_unix_sock(state->notification_channel_socket); | |
397 | if (ret < 0) { | |
398 | ERR("[notification-thread] Listen failed on notification channel socket"); | |
399 | goto error; | |
400 | } | |
401 | ||
402 | state->client_socket_ht = cds_lfht_new(DEFAULT_HT_SIZE, 1, 0, | |
403 | CDS_LFHT_AUTO_RESIZE | CDS_LFHT_ACCOUNTING, NULL); | |
404 | if (!state->client_socket_ht) { | |
405 | goto error; | |
406 | } | |
407 | ||
408 | state->channel_triggers_ht = cds_lfht_new(DEFAULT_HT_SIZE, 1, 0, | |
409 | CDS_LFHT_AUTO_RESIZE | CDS_LFHT_ACCOUNTING, NULL); | |
410 | if (!state->channel_triggers_ht) { | |
411 | goto error; | |
412 | } | |
413 | ||
414 | state->channel_state_ht = cds_lfht_new(DEFAULT_HT_SIZE, 1, 0, | |
415 | CDS_LFHT_AUTO_RESIZE | CDS_LFHT_ACCOUNTING, NULL); | |
416 | if (!state->channel_state_ht) { | |
417 | goto error; | |
418 | } | |
419 | ||
420 | state->notification_trigger_clients_ht = cds_lfht_new(DEFAULT_HT_SIZE, | |
421 | 1, 0, CDS_LFHT_AUTO_RESIZE | CDS_LFHT_ACCOUNTING, NULL); | |
422 | if (!state->notification_trigger_clients_ht) { | |
423 | goto error; | |
424 | } | |
425 | ||
426 | state->channels_ht = cds_lfht_new(DEFAULT_HT_SIZE, | |
427 | 1, 0, CDS_LFHT_AUTO_RESIZE | CDS_LFHT_ACCOUNTING, NULL); | |
428 | if (!state->channels_ht) { | |
429 | goto error; | |
430 | } | |
431 | ||
432 | state->triggers_ht = cds_lfht_new(DEFAULT_HT_SIZE, | |
433 | 1, 0, CDS_LFHT_AUTO_RESIZE | CDS_LFHT_ACCOUNTING, NULL); | |
434 | if (!state->triggers_ht) { | |
435 | goto error; | |
436 | } | |
437 | end: | |
438 | return 0; | |
439 | error: | |
440 | fini_thread_state(state); | |
441 | return -1; | |
442 | } | |
443 | ||
444 | static | |
445 | int handle_channel_monitoring_pipe(int fd, uint32_t revents, | |
446 | struct notification_thread_handle *handle, | |
447 | struct notification_thread_state *state) | |
448 | { | |
449 | int ret = 0; | |
450 | enum lttng_domain_type domain; | |
451 | ||
452 | if (fd == handle->channel_monitoring_pipes.ust32_consumer || | |
453 | fd == handle->channel_monitoring_pipes.ust64_consumer) { | |
454 | domain = LTTNG_DOMAIN_UST; | |
455 | } else if (fd == handle->channel_monitoring_pipes.kernel_consumer) { | |
456 | domain = LTTNG_DOMAIN_KERNEL; | |
457 | } else { | |
458 | abort(); | |
459 | } | |
460 | ||
461 | if (revents & (LPOLLERR | LPOLLHUP | LPOLLRDHUP)) { | |
462 | ret = lttng_poll_del(&state->events, fd); | |
463 | if (ret) { | |
464 | ERR("[notification-thread] Failed to remove consumer monitoring pipe from poll set"); | |
465 | } | |
466 | goto end; | |
467 | } | |
468 | ||
469 | ret = handle_notification_thread_channel_sample( | |
470 | state, fd, domain); | |
471 | if (ret) { | |
8a9bd316 | 472 | ERR("[notification-thread] Consumer sample handling error occurred"); |
ab0ee2ca JG |
473 | ret = -1; |
474 | goto end; | |
475 | } | |
476 | end: | |
477 | return ret; | |
478 | } | |
479 | ||
480 | /* | |
481 | * This thread services notification channel clients and commands received | |
482 | * from various lttng-sessiond components over a command queue. | |
483 | */ | |
484 | void *thread_notification(void *data) | |
485 | { | |
486 | int ret; | |
487 | struct notification_thread_handle *handle = data; | |
488 | struct notification_thread_state state; | |
489 | ||
490 | DBG("[notification-thread] Started notification thread"); | |
491 | ||
492 | if (!handle) { | |
493 | ERR("[notification-thread] Invalid thread context provided"); | |
494 | goto end; | |
495 | } | |
496 | ||
497 | rcu_register_thread(); | |
498 | rcu_thread_online(); | |
499 | ||
500 | health_register(health_sessiond, HEALTH_SESSIOND_TYPE_NOTIFICATION); | |
501 | health_code_update(); | |
502 | ||
503 | ret = init_thread_state(handle, &state); | |
504 | if (ret) { | |
505 | goto end; | |
506 | } | |
507 | ||
508 | /* Ready to handle client connections. */ | |
509 | sessiond_notify_ready(); | |
510 | ||
511 | while (true) { | |
512 | int fd_count, i; | |
513 | ||
514 | health_poll_entry(); | |
515 | DBG("[notification-thread] Entering poll wait"); | |
516 | ret = lttng_poll_wait(&state.events, -1); | |
517 | DBG("[notification-thread] Poll wait returned (%i)", ret); | |
518 | health_poll_exit(); | |
519 | if (ret < 0) { | |
520 | /* | |
521 | * Restart interrupted system call. | |
522 | */ | |
523 | if (errno == EINTR) { | |
524 | continue; | |
525 | } | |
526 | ERR("[notification-thread] Error encountered during lttng_poll_wait (%i)", ret); | |
527 | goto error; | |
528 | } | |
529 | ||
530 | fd_count = ret; | |
531 | for (i = 0; i < fd_count; i++) { | |
532 | int fd = LTTNG_POLL_GETFD(&state.events, i); | |
533 | uint32_t revents = LTTNG_POLL_GETEV(&state.events, i); | |
534 | ||
6c35c1c3 JG |
535 | if (!revents) { |
536 | continue; | |
537 | } | |
ab0ee2ca JG |
538 | DBG("[notification-thread] Handling fd (%i) activity (%u)", fd, revents); |
539 | ||
540 | if (fd == state.notification_channel_socket) { | |
541 | if (revents & LPOLLIN) { | |
542 | ret = handle_notification_thread_client_connect( | |
543 | &state); | |
544 | if (ret < 0) { | |
545 | goto error; | |
546 | } | |
547 | } else if (revents & | |
548 | (LPOLLERR | LPOLLHUP | LPOLLRDHUP)) { | |
549 | ERR("[notification-thread] Notification socket poll error"); | |
550 | goto error; | |
551 | } else { | |
552 | ERR("[notification-thread] Unexpected poll events %u for notification socket %i", revents, fd); | |
553 | goto error; | |
554 | } | |
800c5e10 | 555 | } else if (fd == lttng_pipe_get_readfd(handle->cmd_queue.event_pipe)) { |
ab0ee2ca JG |
556 | ret = handle_notification_thread_command(handle, |
557 | &state); | |
558 | if (ret < 0) { | |
559 | DBG("[notification-thread] Error encountered while servicing command queue"); | |
560 | goto error; | |
561 | } else if (ret > 0) { | |
562 | goto exit; | |
563 | } | |
564 | } else if (fd == handle->channel_monitoring_pipes.ust32_consumer || | |
565 | fd == handle->channel_monitoring_pipes.ust64_consumer || | |
566 | fd == handle->channel_monitoring_pipes.kernel_consumer) { | |
567 | ret = handle_channel_monitoring_pipe(fd, | |
568 | revents, handle, &state); | |
569 | if (ret) { | |
570 | goto error; | |
571 | } | |
572 | } else { | |
573 | /* Activity on a client's socket. */ | |
574 | if (revents & (LPOLLERR | LPOLLHUP | LPOLLRDHUP)) { | |
575 | /* | |
576 | * It doesn't matter if a command was | |
577 | * pending on the client socket at this | |
578 | * point since it now has no way to | |
579 | * receive the notifications to which | |
580 | * it was subscribing or unsubscribing. | |
581 | */ | |
582 | ret = handle_notification_thread_client_disconnect( | |
583 | fd, &state); | |
584 | if (ret) { | |
585 | goto error; | |
586 | } | |
587 | } else { | |
588 | if (revents & LPOLLIN) { | |
589 | ret = handle_notification_thread_client_in( | |
590 | &state, fd); | |
591 | if (ret) { | |
592 | goto error; | |
593 | } | |
594 | } | |
595 | ||
596 | if (revents & LPOLLOUT) { | |
597 | ret = handle_notification_thread_client_out( | |
598 | &state, fd); | |
599 | if (ret) { | |
600 | goto error; | |
601 | } | |
602 | } | |
603 | } | |
604 | } | |
605 | } | |
606 | } | |
607 | exit: | |
608 | error: | |
609 | fini_thread_state(&state); | |
610 | health_unregister(health_sessiond); | |
611 | rcu_thread_offline(); | |
612 | rcu_unregister_thread(); | |
613 | end: | |
614 | return NULL; | |
615 | } |