Commit | Line | Data |
---|---|---|
d3e2ba59 JD |
1 | /* |
2 | * Copyright (C) 2013 - Julien Desfossez <jdesfossez@efficios.com> | |
3 | * David Goulet <dgoulet@efficios.com> | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License, version 2 only, | |
7 | * as published by the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
12 | * more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License along | |
15 | * with this program; if not, write to the Free Software Foundation, Inc., | |
16 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
17 | */ | |
18 | ||
19 | #define _GNU_SOURCE | |
20 | #include <getopt.h> | |
21 | #include <grp.h> | |
22 | #include <limits.h> | |
23 | #include <pthread.h> | |
24 | #include <signal.h> | |
25 | #include <stdio.h> | |
26 | #include <stdlib.h> | |
27 | #include <string.h> | |
28 | #include <sys/mman.h> | |
29 | #include <sys/mount.h> | |
30 | #include <sys/resource.h> | |
31 | #include <sys/socket.h> | |
32 | #include <sys/stat.h> | |
33 | #include <sys/types.h> | |
34 | #include <sys/wait.h> | |
35 | #include <inttypes.h> | |
36 | #include <urcu/futex.h> | |
37 | #include <urcu/uatomic.h> | |
38 | #include <unistd.h> | |
39 | #include <fcntl.h> | |
40 | #include <config.h> | |
41 | ||
42 | #include <lttng/lttng.h> | |
43 | #include <common/common.h> | |
44 | #include <common/compat/poll.h> | |
45 | #include <common/compat/socket.h> | |
f263b7fd | 46 | #include <common/compat/endian.h> |
d3e2ba59 JD |
47 | #include <common/defaults.h> |
48 | #include <common/futex.h> | |
2f8f53af | 49 | #include <common/index/index.h> |
d3e2ba59 JD |
50 | #include <common/sessiond-comm/sessiond-comm.h> |
51 | #include <common/sessiond-comm/inet.h> | |
52 | #include <common/sessiond-comm/relayd.h> | |
53 | #include <common/uri.h> | |
54 | #include <common/utils.h> | |
55 | ||
56 | #include "cmd.h" | |
57 | #include "live.h" | |
58 | #include "lttng-relayd.h" | |
d3e2ba59 | 59 | #include "utils.h" |
eea7556c | 60 | #include "health-relayd.h" |
9b5e0863 | 61 | #include "testpoint.h" |
2f8f53af | 62 | #include "viewer-stream.h" |
2a174661 DG |
63 | #include "stream.h" |
64 | #include "session.h" | |
65 | #include "ctf-trace.h" | |
58eb9381 | 66 | #include "connection.h" |
d3e2ba59 JD |
67 | |
68 | static struct lttng_uri *live_uri; | |
69 | ||
d3e2ba59 JD |
70 | /* |
71 | * This pipe is used to inform the worker thread that a command is queued and | |
72 | * ready to be processed. | |
73 | */ | |
58eb9381 | 74 | static int live_conn_pipe[2] = { -1, -1 }; |
d3e2ba59 JD |
75 | |
76 | /* Shared between threads */ | |
77 | static int live_dispatch_thread_exit; | |
78 | ||
79 | static pthread_t live_listener_thread; | |
80 | static pthread_t live_dispatcher_thread; | |
81 | static pthread_t live_worker_thread; | |
82 | ||
83 | /* | |
84 | * Relay command queue. | |
85 | * | |
86 | * The live_thread_listener and live_thread_dispatcher communicate with this | |
87 | * queue. | |
88 | */ | |
58eb9381 | 89 | static struct relay_conn_queue viewer_conn_queue; |
d3e2ba59 JD |
90 | |
91 | static uint64_t last_relay_viewer_session_id; | |
92 | ||
93 | /* | |
94 | * Cleanup the daemon | |
95 | */ | |
96 | static | |
77c54fed | 97 | void cleanup_relayd_live(void) |
d3e2ba59 JD |
98 | { |
99 | DBG("Cleaning up"); | |
100 | ||
d3e2ba59 JD |
101 | free(live_uri); |
102 | } | |
103 | ||
2f8f53af DG |
104 | /* |
105 | * Receive a request buffer using a given socket, destination allocated buffer | |
106 | * of length size. | |
107 | * | |
108 | * Return the size of the received message or else a negative value on error | |
109 | * with errno being set by recvmsg() syscall. | |
110 | */ | |
111 | static | |
112 | ssize_t recv_request(struct lttcomm_sock *sock, void *buf, size_t size) | |
113 | { | |
114 | ssize_t ret; | |
115 | ||
116 | assert(sock); | |
117 | assert(buf); | |
118 | ||
119 | ret = sock->ops->recvmsg(sock, buf, size, 0); | |
120 | if (ret < 0 || ret != size) { | |
121 | if (ret == 0) { | |
122 | /* Orderly shutdown. Not necessary to print an error. */ | |
123 | DBG("Socket %d did an orderly shutdown", sock->fd); | |
124 | } else { | |
125 | ERR("Relay failed to receive request."); | |
126 | } | |
127 | ret = -1; | |
128 | } | |
129 | ||
130 | return ret; | |
131 | } | |
132 | ||
133 | /* | |
134 | * Send a response buffer using a given socket, source allocated buffer of | |
135 | * length size. | |
136 | * | |
137 | * Return the size of the sent message or else a negative value on error with | |
138 | * errno being set by sendmsg() syscall. | |
139 | */ | |
140 | static | |
141 | ssize_t send_response(struct lttcomm_sock *sock, void *buf, size_t size) | |
142 | { | |
143 | ssize_t ret; | |
144 | ||
145 | assert(sock); | |
146 | assert(buf); | |
147 | ||
148 | ret = sock->ops->sendmsg(sock, buf, size, 0); | |
149 | if (ret < 0) { | |
150 | ERR("Relayd failed to send response."); | |
151 | } | |
152 | ||
153 | return ret; | |
154 | } | |
155 | ||
156 | /* | |
f04a971b JD |
157 | * Atomically check if new streams got added in one of the sessions attached |
158 | * and reset the flag to 0. | |
2f8f53af DG |
159 | * |
160 | * Returns 1 if new streams got added, 0 if nothing changed, a negative value | |
161 | * on error. | |
162 | */ | |
163 | static | |
f04a971b | 164 | int check_new_streams(struct relay_connection *conn) |
2f8f53af | 165 | { |
2f8f53af | 166 | struct relay_session *session; |
f04a971b JD |
167 | unsigned long current_val; |
168 | int ret = 0; | |
2f8f53af | 169 | |
f04a971b JD |
170 | if (!conn->viewer_session) { |
171 | goto end; | |
172 | } | |
173 | cds_list_for_each_entry(session, | |
174 | &conn->viewer_session->sessions_head, | |
175 | viewer_session_list) { | |
176 | current_val = uatomic_cmpxchg(&session->new_streams, 1, 0); | |
177 | ret = current_val; | |
178 | if (ret == 1) { | |
179 | goto end; | |
180 | } | |
2f8f53af DG |
181 | } |
182 | ||
f04a971b | 183 | end: |
2f8f53af DG |
184 | return ret; |
185 | } | |
186 | ||
187 | /* | |
188 | * Send viewer streams to the given socket. The ignore_sent_flag indicates if | |
189 | * this function should ignore the sent flag or not. | |
190 | * | |
191 | * Return 0 on success or else a negative value. | |
192 | */ | |
193 | static | |
194 | ssize_t send_viewer_streams(struct lttcomm_sock *sock, | |
195 | struct relay_session *session, unsigned int ignore_sent_flag) | |
196 | { | |
197 | ssize_t ret; | |
198 | struct lttng_viewer_stream send_stream; | |
199 | struct lttng_ht_iter iter; | |
200 | struct relay_viewer_stream *vstream; | |
201 | ||
202 | assert(session); | |
203 | ||
204 | rcu_read_lock(); | |
205 | ||
206 | cds_lfht_for_each_entry(viewer_streams_ht->ht, &iter.iter, vstream, | |
207 | stream_n.node) { | |
2a174661 DG |
208 | struct ctf_trace *ctf_trace; |
209 | ||
2f8f53af DG |
210 | health_code_update(); |
211 | ||
212 | /* Ignore if not the same session. */ | |
213 | if (vstream->session_id != session->id || | |
214 | (!ignore_sent_flag && vstream->sent_flag)) { | |
215 | continue; | |
216 | } | |
217 | ||
2a174661 DG |
218 | ctf_trace = ctf_trace_find_by_path(session->ctf_traces_ht, |
219 | vstream->path_name); | |
220 | assert(ctf_trace); | |
221 | ||
2f8f53af | 222 | send_stream.id = htobe64(vstream->stream_handle); |
2a174661 | 223 | send_stream.ctf_trace_id = htobe64(ctf_trace->id); |
2f8f53af DG |
224 | send_stream.metadata_flag = htobe32(vstream->metadata_flag); |
225 | strncpy(send_stream.path_name, vstream->path_name, | |
226 | sizeof(send_stream.path_name)); | |
227 | strncpy(send_stream.channel_name, vstream->channel_name, | |
228 | sizeof(send_stream.channel_name)); | |
229 | ||
230 | DBG("Sending stream %" PRIu64 " to viewer", vstream->stream_handle); | |
231 | ret = send_response(sock, &send_stream, sizeof(send_stream)); | |
232 | if (ret < 0) { | |
233 | goto end_unlock; | |
234 | } | |
235 | vstream->sent_flag = 1; | |
236 | } | |
237 | ||
238 | ret = 0; | |
239 | ||
240 | end_unlock: | |
241 | rcu_read_unlock(); | |
242 | return ret; | |
243 | } | |
244 | ||
245 | /* | |
246 | * Create every viewer stream possible for the given session with the seek | |
247 | * type. Three counters *can* be return which are in order the total amount of | |
248 | * viewer stream of the session, the number of unsent stream and the number of | |
249 | * stream created. Those counters can be NULL and thus will be ignored. | |
250 | * | |
251 | * Return 0 on success or else a negative value. | |
252 | */ | |
253 | static | |
254 | int make_viewer_streams(struct relay_session *session, | |
255 | enum lttng_viewer_seek seek_t, uint32_t *nb_total, uint32_t *nb_unsent, | |
256 | uint32_t *nb_created) | |
257 | { | |
258 | int ret; | |
2f8f53af | 259 | struct lttng_ht_iter iter; |
2a174661 | 260 | struct ctf_trace *ctf_trace; |
2f8f53af DG |
261 | |
262 | assert(session); | |
263 | ||
264 | /* | |
265 | * This is to make sure we create viewer streams for a full received | |
266 | * channel. For instance, if we have 8 streams for a channel that are | |
267 | * concurrently being flagged ready, we can end up creating just a subset | |
268 | * of the 8 streams (the ones that are flagged). This lock avoids this | |
269 | * limbo state. | |
270 | */ | |
271 | pthread_mutex_lock(&session->viewer_ready_lock); | |
272 | ||
273 | /* | |
274 | * Create viewer streams for relay streams that are ready to be used for a | |
275 | * the given session id only. | |
276 | */ | |
2a174661 DG |
277 | rcu_read_lock(); |
278 | cds_lfht_for_each_entry(session->ctf_traces_ht->ht, &iter.iter, ctf_trace, | |
279 | node.node) { | |
280 | struct relay_stream *stream; | |
2f8f53af DG |
281 | |
282 | health_code_update(); | |
283 | ||
2a174661 | 284 | if (ctf_trace->invalid_flag) { |
2f8f53af DG |
285 | continue; |
286 | } | |
287 | ||
2a174661 DG |
288 | cds_list_for_each_entry(stream, &ctf_trace->stream_list, trace_list) { |
289 | struct relay_viewer_stream *vstream; | |
290 | ||
291 | if (!stream->viewer_ready) { | |
292 | continue; | |
293 | } | |
294 | ||
295 | vstream = viewer_stream_find_by_id(stream->stream_handle); | |
2f8f53af | 296 | if (!vstream) { |
2a174661 DG |
297 | vstream = viewer_stream_create(stream, seek_t, ctf_trace); |
298 | if (!vstream) { | |
299 | ret = -1; | |
300 | goto error_unlock; | |
301 | } | |
302 | /* Acquire reference to ctf_trace. */ | |
303 | ctf_trace_get_ref(ctf_trace); | |
304 | ||
305 | if (nb_created) { | |
306 | /* Update number of created stream counter. */ | |
307 | (*nb_created)++; | |
308 | } | |
309 | } else if (!vstream->sent_flag && nb_unsent) { | |
310 | /* Update number of unsent stream counter. */ | |
311 | (*nb_unsent)++; | |
2f8f53af | 312 | } |
2a174661 DG |
313 | /* Update number of total stream counter. */ |
314 | if (nb_total) { | |
315 | (*nb_total)++; | |
2f8f53af | 316 | } |
2f8f53af DG |
317 | } |
318 | } | |
319 | ||
320 | ret = 0; | |
321 | ||
322 | error_unlock: | |
2a174661 | 323 | rcu_read_unlock(); |
2f8f53af DG |
324 | pthread_mutex_unlock(&session->viewer_ready_lock); |
325 | return ret; | |
326 | } | |
327 | ||
770f96f4 | 328 | int relayd_live_stop(void) |
d3e2ba59 | 329 | { |
770f96f4 | 330 | /* Stop dispatch thread */ |
d3e2ba59 | 331 | CMM_STORE_SHARED(live_dispatch_thread_exit, 1); |
58eb9381 | 332 | futex_nto1_wake(&viewer_conn_queue.futex); |
770f96f4 | 333 | return 0; |
d3e2ba59 JD |
334 | } |
335 | ||
d3e2ba59 JD |
336 | /* |
337 | * Create a poll set with O_CLOEXEC and add the thread quit pipe to the set. | |
338 | */ | |
339 | static | |
340 | int create_thread_poll_set(struct lttng_poll_event *events, int size) | |
341 | { | |
342 | int ret; | |
343 | ||
344 | if (events == NULL || size == 0) { | |
345 | ret = -1; | |
346 | goto error; | |
347 | } | |
348 | ||
349 | ret = lttng_poll_create(events, size, LTTNG_CLOEXEC); | |
350 | if (ret < 0) { | |
351 | goto error; | |
352 | } | |
353 | ||
354 | /* Add quit pipe */ | |
bcf4a440 | 355 | ret = lttng_poll_add(events, thread_quit_pipe[0], LPOLLIN | LPOLLERR); |
d3e2ba59 JD |
356 | if (ret < 0) { |
357 | goto error; | |
358 | } | |
359 | ||
360 | return 0; | |
361 | ||
362 | error: | |
363 | return ret; | |
364 | } | |
365 | ||
366 | /* | |
367 | * Check if the thread quit pipe was triggered. | |
368 | * | |
369 | * Return 1 if it was triggered else 0; | |
370 | */ | |
371 | static | |
bcf4a440 | 372 | int check_thread_quit_pipe(int fd, uint32_t events) |
d3e2ba59 | 373 | { |
bcf4a440 | 374 | if (fd == thread_quit_pipe[0] && (events & LPOLLIN)) { |
d3e2ba59 JD |
375 | return 1; |
376 | } | |
377 | ||
378 | return 0; | |
379 | } | |
380 | ||
381 | /* | |
382 | * Create and init socket from uri. | |
383 | */ | |
384 | static | |
385 | struct lttcomm_sock *init_socket(struct lttng_uri *uri) | |
386 | { | |
387 | int ret; | |
388 | struct lttcomm_sock *sock = NULL; | |
389 | ||
390 | sock = lttcomm_alloc_sock_from_uri(uri); | |
391 | if (sock == NULL) { | |
392 | ERR("Allocating socket"); | |
393 | goto error; | |
394 | } | |
395 | ||
396 | ret = lttcomm_create_sock(sock); | |
397 | if (ret < 0) { | |
398 | goto error; | |
399 | } | |
400 | DBG("Listening on sock %d for live", sock->fd); | |
401 | ||
402 | ret = sock->ops->bind(sock); | |
403 | if (ret < 0) { | |
404 | goto error; | |
405 | } | |
406 | ||
407 | ret = sock->ops->listen(sock, -1); | |
408 | if (ret < 0) { | |
409 | goto error; | |
410 | ||
411 | } | |
412 | ||
413 | return sock; | |
414 | ||
415 | error: | |
416 | if (sock) { | |
417 | lttcomm_destroy_sock(sock); | |
418 | } | |
419 | return NULL; | |
420 | } | |
421 | ||
422 | /* | |
423 | * This thread manages the listening for new connections on the network | |
424 | */ | |
425 | static | |
426 | void *thread_listener(void *data) | |
427 | { | |
428 | int i, ret, pollfd, err = -1; | |
d3e2ba59 JD |
429 | uint32_t revents, nb_fd; |
430 | struct lttng_poll_event events; | |
431 | struct lttcomm_sock *live_control_sock; | |
432 | ||
433 | DBG("[thread] Relay live listener started"); | |
434 | ||
eea7556c MD |
435 | health_register(health_relayd, HEALTH_RELAYD_TYPE_LIVE_LISTENER); |
436 | ||
437 | health_code_update(); | |
438 | ||
d3e2ba59 JD |
439 | live_control_sock = init_socket(live_uri); |
440 | if (!live_control_sock) { | |
441 | goto error_sock_control; | |
442 | } | |
443 | ||
fb4d42ab | 444 | /* Pass 2 as size here for the thread quit pipe and control sockets. */ |
d3e2ba59 JD |
445 | ret = create_thread_poll_set(&events, 2); |
446 | if (ret < 0) { | |
447 | goto error_create_poll; | |
448 | } | |
449 | ||
450 | /* Add the control socket */ | |
451 | ret = lttng_poll_add(&events, live_control_sock->fd, LPOLLIN | LPOLLRDHUP); | |
452 | if (ret < 0) { | |
453 | goto error_poll_add; | |
454 | } | |
455 | ||
3fd27398 MD |
456 | lttng_relay_notify_ready(); |
457 | ||
9b5e0863 MD |
458 | if (testpoint(relayd_thread_live_listener)) { |
459 | goto error_testpoint; | |
460 | } | |
461 | ||
d3e2ba59 | 462 | while (1) { |
eea7556c MD |
463 | health_code_update(); |
464 | ||
d3e2ba59 JD |
465 | DBG("Listener accepting live viewers connections"); |
466 | ||
467 | restart: | |
eea7556c | 468 | health_poll_entry(); |
d3e2ba59 | 469 | ret = lttng_poll_wait(&events, -1); |
eea7556c | 470 | health_poll_exit(); |
d3e2ba59 JD |
471 | if (ret < 0) { |
472 | /* | |
473 | * Restart interrupted system call. | |
474 | */ | |
475 | if (errno == EINTR) { | |
476 | goto restart; | |
477 | } | |
478 | goto error; | |
479 | } | |
480 | nb_fd = ret; | |
481 | ||
482 | DBG("Relay new viewer connection received"); | |
483 | for (i = 0; i < nb_fd; i++) { | |
eea7556c MD |
484 | health_code_update(); |
485 | ||
d3e2ba59 JD |
486 | /* Fetch once the poll data */ |
487 | revents = LTTNG_POLL_GETEV(&events, i); | |
488 | pollfd = LTTNG_POLL_GETFD(&events, i); | |
489 | ||
e0077699 MD |
490 | if (!revents) { |
491 | /* No activity for this FD (poll implementation). */ | |
492 | continue; | |
493 | } | |
494 | ||
d3e2ba59 | 495 | /* Thread quit pipe has been closed. Killing thread. */ |
bcf4a440 | 496 | ret = check_thread_quit_pipe(pollfd, revents); |
d3e2ba59 JD |
497 | if (ret) { |
498 | err = 0; | |
499 | goto exit; | |
500 | } | |
501 | ||
502 | if (revents & (LPOLLERR | LPOLLHUP | LPOLLRDHUP)) { | |
503 | ERR("socket poll error"); | |
504 | goto error; | |
505 | } else if (revents & LPOLLIN) { | |
506 | /* | |
507 | * Get allocated in this thread, enqueued to a global queue, | |
508 | * dequeued and freed in the worker thread. | |
509 | */ | |
58eb9381 DG |
510 | int val = 1; |
511 | struct relay_connection *new_conn; | |
d3e2ba59 JD |
512 | struct lttcomm_sock *newsock; |
513 | ||
58eb9381 DG |
514 | new_conn = connection_create(); |
515 | if (!new_conn) { | |
d3e2ba59 JD |
516 | goto error; |
517 | } | |
518 | ||
d3e2ba59 JD |
519 | newsock = live_control_sock->ops->accept(live_control_sock); |
520 | if (!newsock) { | |
521 | PERROR("accepting control sock"); | |
58eb9381 | 522 | connection_free(new_conn); |
d3e2ba59 JD |
523 | goto error; |
524 | } | |
525 | DBG("Relay viewer connection accepted socket %d", newsock->fd); | |
58eb9381 | 526 | |
d3e2ba59 | 527 | ret = setsockopt(newsock->fd, SOL_SOCKET, SO_REUSEADDR, &val, |
58eb9381 | 528 | sizeof(val)); |
d3e2ba59 JD |
529 | if (ret < 0) { |
530 | PERROR("setsockopt inet"); | |
531 | lttcomm_destroy_sock(newsock); | |
58eb9381 | 532 | connection_free(new_conn); |
d3e2ba59 JD |
533 | goto error; |
534 | } | |
58eb9381 | 535 | new_conn->sock = newsock; |
d3e2ba59 | 536 | |
58eb9381 | 537 | /* Enqueue request for the dispatcher thread. */ |
8bdee6e2 SM |
538 | cds_wfcq_enqueue(&viewer_conn_queue.head, &viewer_conn_queue.tail, |
539 | &new_conn->qnode); | |
d3e2ba59 JD |
540 | |
541 | /* | |
58eb9381 | 542 | * Wake the dispatch queue futex. Implicit memory barrier with |
8bdee6e2 | 543 | * the exchange in cds_wfcq_enqueue. |
d3e2ba59 | 544 | */ |
58eb9381 | 545 | futex_nto1_wake(&viewer_conn_queue.futex); |
d3e2ba59 JD |
546 | } |
547 | } | |
548 | } | |
549 | ||
550 | exit: | |
551 | error: | |
552 | error_poll_add: | |
9b5e0863 | 553 | error_testpoint: |
d3e2ba59 JD |
554 | lttng_poll_clean(&events); |
555 | error_create_poll: | |
556 | if (live_control_sock->fd >= 0) { | |
557 | ret = live_control_sock->ops->close(live_control_sock); | |
558 | if (ret) { | |
559 | PERROR("close"); | |
560 | } | |
561 | } | |
562 | lttcomm_destroy_sock(live_control_sock); | |
563 | error_sock_control: | |
564 | if (err) { | |
eea7556c | 565 | health_error(); |
d3e2ba59 JD |
566 | DBG("Live viewer listener thread exited with error"); |
567 | } | |
eea7556c | 568 | health_unregister(health_relayd); |
d3e2ba59 | 569 | DBG("Live viewer listener thread cleanup complete"); |
770f96f4 MD |
570 | if (lttng_relay_stop_threads()) { |
571 | ERR("Error stopping threads"); | |
77c54fed | 572 | } |
d3e2ba59 JD |
573 | return NULL; |
574 | } | |
575 | ||
576 | /* | |
577 | * This thread manages the dispatching of the requests to worker threads | |
578 | */ | |
579 | static | |
580 | void *thread_dispatcher(void *data) | |
581 | { | |
6cd525e8 MD |
582 | int err = -1; |
583 | ssize_t ret; | |
8bdee6e2 | 584 | struct cds_wfcq_node *node; |
58eb9381 | 585 | struct relay_connection *conn = NULL; |
d3e2ba59 JD |
586 | |
587 | DBG("[thread] Live viewer relay dispatcher started"); | |
588 | ||
eea7556c MD |
589 | health_register(health_relayd, HEALTH_RELAYD_TYPE_LIVE_DISPATCHER); |
590 | ||
9b5e0863 MD |
591 | if (testpoint(relayd_thread_live_dispatcher)) { |
592 | goto error_testpoint; | |
593 | } | |
594 | ||
eea7556c MD |
595 | health_code_update(); |
596 | ||
d3e2ba59 | 597 | while (!CMM_LOAD_SHARED(live_dispatch_thread_exit)) { |
eea7556c MD |
598 | health_code_update(); |
599 | ||
d3e2ba59 | 600 | /* Atomically prepare the queue futex */ |
58eb9381 | 601 | futex_nto1_prepare(&viewer_conn_queue.futex); |
d3e2ba59 JD |
602 | |
603 | do { | |
eea7556c MD |
604 | health_code_update(); |
605 | ||
d3e2ba59 | 606 | /* Dequeue commands */ |
8bdee6e2 SM |
607 | node = cds_wfcq_dequeue_blocking(&viewer_conn_queue.head, |
608 | &viewer_conn_queue.tail); | |
d3e2ba59 JD |
609 | if (node == NULL) { |
610 | DBG("Woken up but nothing in the live-viewer " | |
611 | "relay command queue"); | |
612 | /* Continue thread execution */ | |
613 | break; | |
614 | } | |
58eb9381 | 615 | conn = caa_container_of(node, struct relay_connection, qnode); |
d3e2ba59 | 616 | DBG("Dispatching viewer request waiting on sock %d", |
58eb9381 | 617 | conn->sock->fd); |
d3e2ba59 JD |
618 | |
619 | /* | |
620 | * Inform worker thread of the new request. This call is blocking | |
621 | * so we can be assured that the data will be read at some point in | |
622 | * time or wait to the end of the world :) | |
623 | */ | |
58eb9381 DG |
624 | ret = lttng_write(live_conn_pipe[1], &conn, sizeof(conn)); |
625 | if (ret < 0) { | |
626 | PERROR("write conn pipe"); | |
627 | connection_destroy(conn); | |
d3e2ba59 JD |
628 | goto error; |
629 | } | |
630 | } while (node != NULL); | |
631 | ||
632 | /* Futex wait on queue. Blocking call on futex() */ | |
eea7556c | 633 | health_poll_entry(); |
58eb9381 | 634 | futex_nto1_wait(&viewer_conn_queue.futex); |
eea7556c | 635 | health_poll_exit(); |
d3e2ba59 JD |
636 | } |
637 | ||
eea7556c MD |
638 | /* Normal exit, no error */ |
639 | err = 0; | |
640 | ||
d3e2ba59 | 641 | error: |
9b5e0863 | 642 | error_testpoint: |
eea7556c MD |
643 | if (err) { |
644 | health_error(); | |
645 | ERR("Health error occurred in %s", __func__); | |
646 | } | |
647 | health_unregister(health_relayd); | |
d3e2ba59 | 648 | DBG("Live viewer dispatch thread dying"); |
770f96f4 MD |
649 | if (lttng_relay_stop_threads()) { |
650 | ERR("Error stopping threads"); | |
77c54fed | 651 | } |
d3e2ba59 JD |
652 | return NULL; |
653 | } | |
654 | ||
655 | /* | |
656 | * Establish connection with the viewer and check the versions. | |
657 | * | |
658 | * Return 0 on success or else negative value. | |
659 | */ | |
660 | static | |
58eb9381 | 661 | int viewer_connect(struct relay_connection *conn) |
d3e2ba59 JD |
662 | { |
663 | int ret; | |
664 | struct lttng_viewer_connect reply, msg; | |
665 | ||
58eb9381 | 666 | assert(conn); |
d3e2ba59 | 667 | |
58eb9381 | 668 | conn->version_check_done = 1; |
d3e2ba59 | 669 | |
eea7556c MD |
670 | health_code_update(); |
671 | ||
2f8f53af DG |
672 | DBG("Viewer is establishing a connection to the relayd."); |
673 | ||
58eb9381 | 674 | ret = recv_request(conn->sock, &msg, sizeof(msg)); |
2f8f53af | 675 | if (ret < 0) { |
d3e2ba59 JD |
676 | goto end; |
677 | } | |
678 | ||
eea7556c MD |
679 | health_code_update(); |
680 | ||
f46b2ce6 | 681 | memset(&reply, 0, sizeof(reply)); |
d3e2ba59 JD |
682 | reply.major = RELAYD_VERSION_COMM_MAJOR; |
683 | reply.minor = RELAYD_VERSION_COMM_MINOR; | |
684 | ||
685 | /* Major versions must be the same */ | |
686 | if (reply.major != be32toh(msg.major)) { | |
2f8f53af DG |
687 | DBG("Incompatible major versions ([relayd] %u vs [client] %u)", |
688 | reply.major, be32toh(msg.major)); | |
72180669 | 689 | ret = -1; |
d3e2ba59 JD |
690 | goto end; |
691 | } | |
692 | ||
58eb9381 | 693 | conn->major = reply.major; |
d3e2ba59 JD |
694 | /* We adapt to the lowest compatible version */ |
695 | if (reply.minor <= be32toh(msg.minor)) { | |
58eb9381 | 696 | conn->minor = reply.minor; |
d3e2ba59 | 697 | } else { |
58eb9381 | 698 | conn->minor = be32toh(msg.minor); |
d3e2ba59 JD |
699 | } |
700 | ||
c4e361a4 | 701 | if (be32toh(msg.type) == LTTNG_VIEWER_CLIENT_COMMAND) { |
58eb9381 | 702 | conn->type = RELAY_VIEWER_COMMAND; |
c4e361a4 | 703 | } else if (be32toh(msg.type) == LTTNG_VIEWER_CLIENT_NOTIFICATION) { |
58eb9381 | 704 | conn->type = RELAY_VIEWER_NOTIFICATION; |
d3e2ba59 JD |
705 | } else { |
706 | ERR("Unknown connection type : %u", be32toh(msg.type)); | |
707 | ret = -1; | |
708 | goto end; | |
709 | } | |
710 | ||
711 | reply.major = htobe32(reply.major); | |
712 | reply.minor = htobe32(reply.minor); | |
58eb9381 | 713 | if (conn->type == RELAY_VIEWER_COMMAND) { |
19eba299 MD |
714 | /* |
715 | * Increment outside of htobe64 macro, because can be used more than once | |
716 | * within the macro, and thus the operation may be undefined. | |
717 | */ | |
718 | last_relay_viewer_session_id++; | |
719 | reply.viewer_session_id = htobe64(last_relay_viewer_session_id); | |
d3e2ba59 | 720 | } |
eea7556c MD |
721 | |
722 | health_code_update(); | |
723 | ||
58eb9381 | 724 | ret = send_response(conn->sock, &reply, sizeof(reply)); |
d3e2ba59 | 725 | if (ret < 0) { |
2f8f53af | 726 | goto end; |
d3e2ba59 JD |
727 | } |
728 | ||
eea7556c MD |
729 | health_code_update(); |
730 | ||
58eb9381 | 731 | DBG("Version check done using protocol %u.%u", conn->major, conn->minor); |
d3e2ba59 JD |
732 | ret = 0; |
733 | ||
734 | end: | |
735 | return ret; | |
736 | } | |
737 | ||
738 | /* | |
739 | * Send the viewer the list of current sessions. | |
740 | * | |
741 | * Return 0 on success or else a negative value. | |
742 | */ | |
743 | static | |
58eb9381 | 744 | int viewer_list_sessions(struct relay_connection *conn) |
d3e2ba59 JD |
745 | { |
746 | int ret; | |
747 | struct lttng_viewer_list_sessions session_list; | |
748 | unsigned long count; | |
749 | long approx_before, approx_after; | |
d3e2ba59 JD |
750 | struct lttng_ht_iter iter; |
751 | struct lttng_viewer_session send_session; | |
752 | struct relay_session *session; | |
753 | ||
754 | DBG("List sessions received"); | |
755 | ||
d3e2ba59 | 756 | rcu_read_lock(); |
58eb9381 DG |
757 | cds_lfht_count_nodes(conn->sessions_ht->ht, &approx_before, &count, |
758 | &approx_after); | |
d3e2ba59 JD |
759 | session_list.sessions_count = htobe32(count); |
760 | ||
eea7556c MD |
761 | health_code_update(); |
762 | ||
58eb9381 | 763 | ret = send_response(conn->sock, &session_list, sizeof(session_list)); |
d3e2ba59 | 764 | if (ret < 0) { |
d3e2ba59 JD |
765 | goto end_unlock; |
766 | } | |
767 | ||
eea7556c MD |
768 | health_code_update(); |
769 | ||
58eb9381 | 770 | cds_lfht_for_each_entry(conn->sessions_ht->ht, &iter.iter, session, |
2f8f53af | 771 | session_n.node) { |
eea7556c MD |
772 | health_code_update(); |
773 | ||
d3e2ba59 JD |
774 | strncpy(send_session.session_name, session->session_name, |
775 | sizeof(send_session.session_name)); | |
776 | strncpy(send_session.hostname, session->hostname, | |
777 | sizeof(send_session.hostname)); | |
778 | send_session.id = htobe64(session->id); | |
779 | send_session.live_timer = htobe32(session->live_timer); | |
2a174661 | 780 | send_session.clients = htobe32(session->viewer_refcount); |
87b576ec | 781 | send_session.streams = htobe32(session->stream_count); |
d3e2ba59 | 782 | |
eea7556c MD |
783 | health_code_update(); |
784 | ||
58eb9381 | 785 | ret = send_response(conn->sock, &send_session, sizeof(send_session)); |
d3e2ba59 | 786 | if (ret < 0) { |
d3e2ba59 JD |
787 | goto end_unlock; |
788 | } | |
789 | } | |
eea7556c MD |
790 | health_code_update(); |
791 | ||
d3e2ba59 | 792 | ret = 0; |
d3e2ba59 JD |
793 | end_unlock: |
794 | rcu_read_unlock(); | |
d3e2ba59 JD |
795 | return ret; |
796 | } | |
797 | ||
6763619c JD |
798 | /* |
799 | * Check if a connection is attached to a session. | |
800 | * Return 1 if attached, 0 if not attached, a negative value on error. | |
801 | */ | |
802 | static | |
803 | int session_attached(struct relay_connection *conn, uint64_t session_id) | |
804 | { | |
805 | struct relay_session *session; | |
806 | int found = 0; | |
807 | ||
808 | if (!conn->viewer_session) { | |
809 | goto end; | |
810 | } | |
811 | cds_list_for_each_entry(session, | |
812 | &conn->viewer_session->sessions_head, | |
813 | viewer_session_list) { | |
814 | if (session->id == session_id) { | |
815 | found = 1; | |
816 | goto end; | |
817 | } | |
818 | } | |
819 | ||
820 | end: | |
821 | return found; | |
822 | } | |
823 | ||
d227d5bd JD |
824 | /* |
825 | * Delete all streams for a specific session ID. | |
826 | */ | |
827 | static void destroy_viewer_streams_by_session(struct relay_session *session) | |
828 | { | |
829 | struct relay_viewer_stream *stream; | |
830 | struct lttng_ht_iter iter; | |
831 | ||
832 | assert(session); | |
833 | ||
834 | rcu_read_lock(); | |
835 | cds_lfht_for_each_entry(viewer_streams_ht->ht, &iter.iter, stream, | |
836 | stream_n.node) { | |
837 | struct ctf_trace *ctf_trace; | |
838 | ||
839 | health_code_update(); | |
840 | if (stream->session_id != session->id) { | |
841 | continue; | |
842 | } | |
843 | ||
844 | ctf_trace = ctf_trace_find_by_path(session->ctf_traces_ht, | |
845 | stream->path_name); | |
846 | assert(ctf_trace); | |
847 | ||
848 | viewer_stream_delete(stream); | |
849 | ||
850 | if (stream->metadata_flag) { | |
851 | ctf_trace->metadata_sent = 0; | |
852 | ctf_trace->viewer_metadata_stream = NULL; | |
853 | } | |
854 | ||
855 | viewer_stream_destroy(ctf_trace, stream); | |
856 | } | |
857 | rcu_read_unlock(); | |
858 | } | |
859 | ||
860 | static void try_destroy_streams(struct relay_session *session) | |
861 | { | |
862 | struct ctf_trace *ctf_trace; | |
863 | struct lttng_ht_iter iter; | |
864 | ||
865 | assert(session); | |
866 | ||
867 | cds_lfht_for_each_entry(session->ctf_traces_ht->ht, &iter.iter, ctf_trace, | |
868 | node.node) { | |
869 | /* Attempt to destroy the ctf trace of that session. */ | |
870 | ctf_trace_try_destroy(session, ctf_trace); | |
871 | } | |
872 | } | |
873 | ||
874 | /* | |
875 | * Cleanup a session. | |
876 | */ | |
877 | static void cleanup_session(struct relay_connection *conn, | |
878 | struct relay_session *session) | |
879 | { | |
880 | /* | |
881 | * Very important that this is done before destroying the session so we | |
882 | * can put back every viewer stream reference from the ctf_trace. | |
883 | */ | |
884 | destroy_viewer_streams_by_session(session); | |
885 | try_destroy_streams(session); | |
886 | cds_list_del(&session->viewer_session_list); | |
887 | session_viewer_try_destroy(conn->sessions_ht, session); | |
888 | } | |
889 | ||
80e8027a JD |
890 | /* |
891 | * Send the viewer the list of current sessions. | |
892 | */ | |
893 | static | |
58eb9381 | 894 | int viewer_get_new_streams(struct relay_connection *conn) |
80e8027a JD |
895 | { |
896 | int ret, send_streams = 0; | |
2f8f53af | 897 | uint32_t nb_created = 0, nb_unsent = 0, nb_streams = 0; |
80e8027a JD |
898 | struct lttng_viewer_new_streams_request request; |
899 | struct lttng_viewer_new_streams_response response; | |
80e8027a | 900 | struct relay_session *session; |
6763619c | 901 | uint64_t session_id; |
80e8027a | 902 | |
58eb9381 | 903 | assert(conn); |
80e8027a JD |
904 | |
905 | DBG("Get new streams received"); | |
906 | ||
80e8027a JD |
907 | health_code_update(); |
908 | ||
2f8f53af | 909 | /* Receive the request from the connected client. */ |
58eb9381 | 910 | ret = recv_request(conn->sock, &request, sizeof(request)); |
2f8f53af | 911 | if (ret < 0) { |
80e8027a JD |
912 | goto error; |
913 | } | |
6763619c | 914 | session_id = be64toh(request.session_id); |
80e8027a JD |
915 | |
916 | health_code_update(); | |
917 | ||
53efb85a MD |
918 | memset(&response, 0, sizeof(response)); |
919 | ||
80e8027a | 920 | rcu_read_lock(); |
6763619c | 921 | session = session_find_by_id(conn->sessions_ht, session_id); |
2f8f53af | 922 | if (!session) { |
6763619c | 923 | DBG("Relay session %" PRIu64 " not found", session_id); |
c4e361a4 | 924 | response.status = htobe32(LTTNG_VIEWER_NEW_STREAMS_ERR); |
80e8027a JD |
925 | goto send_reply; |
926 | } | |
927 | ||
6763619c | 928 | if (!session_attached(conn, session_id)) { |
80e8027a | 929 | send_streams = 0; |
c4e361a4 | 930 | response.status = htobe32(LTTNG_VIEWER_NEW_STREAMS_ERR); |
80e8027a JD |
931 | goto send_reply; |
932 | } | |
933 | ||
6763619c JD |
934 | send_streams = 1; |
935 | response.status = htobe32(LTTNG_VIEWER_NEW_STREAMS_OK); | |
936 | ||
c4e361a4 | 937 | ret = make_viewer_streams(session, LTTNG_VIEWER_SEEK_LAST, NULL, &nb_unsent, |
2f8f53af DG |
938 | &nb_created); |
939 | if (ret < 0) { | |
940 | goto end_unlock; | |
941 | } | |
942 | /* Only send back the newly created streams with the unsent ones. */ | |
943 | nb_streams = nb_created + nb_unsent; | |
80e8027a JD |
944 | response.streams_count = htobe32(nb_streams); |
945 | ||
4479f682 JD |
946 | /* |
947 | * If the session is closed and we have no new streams to send, | |
948 | * it means that the viewer has already received the whole trace | |
949 | * for this session and should now close it. | |
950 | */ | |
951 | if (nb_streams == 0 && session->close_flag) { | |
952 | send_streams = 0; | |
953 | response.status = htobe32(LTTNG_VIEWER_NEW_STREAMS_HUP); | |
6763619c JD |
954 | /* |
955 | * Remove the session from the attached list of the connection | |
956 | * and try to destroy it. | |
957 | */ | |
958 | cds_list_del(&session->viewer_session_list); | |
d227d5bd | 959 | cleanup_session(conn, session); |
4479f682 JD |
960 | goto send_reply; |
961 | } | |
962 | ||
80e8027a JD |
963 | send_reply: |
964 | health_code_update(); | |
58eb9381 | 965 | ret = send_response(conn->sock, &response, sizeof(response)); |
80e8027a | 966 | if (ret < 0) { |
80e8027a JD |
967 | goto end_unlock; |
968 | } | |
969 | health_code_update(); | |
970 | ||
971 | /* | |
972 | * Unknown or empty session, just return gracefully, the viewer knows what | |
973 | * is happening. | |
974 | */ | |
975 | if (!send_streams || !nb_streams) { | |
976 | ret = 0; | |
977 | goto end_unlock; | |
978 | } | |
979 | ||
2f8f53af DG |
980 | /* |
981 | * Send stream and *DON'T* ignore the sent flag so every viewer streams | |
982 | * that were not sent from that point will be sent to the viewer. | |
983 | */ | |
58eb9381 | 984 | ret = send_viewer_streams(conn->sock, session, 0); |
2f8f53af DG |
985 | if (ret < 0) { |
986 | goto end_unlock; | |
80e8027a JD |
987 | } |
988 | ||
80e8027a JD |
989 | end_unlock: |
990 | rcu_read_unlock(); | |
80e8027a JD |
991 | error: |
992 | return ret; | |
993 | } | |
994 | ||
d3e2ba59 JD |
995 | /* |
996 | * Send the viewer the list of current sessions. | |
997 | */ | |
998 | static | |
58eb9381 | 999 | int viewer_attach_session(struct relay_connection *conn) |
d3e2ba59 | 1000 | { |
2f8f53af DG |
1001 | int send_streams = 0; |
1002 | ssize_t ret; | |
80e8027a | 1003 | uint32_t nb_streams = 0; |
2f8f53af | 1004 | enum lttng_viewer_seek seek_type; |
d3e2ba59 JD |
1005 | struct lttng_viewer_attach_session_request request; |
1006 | struct lttng_viewer_attach_session_response response; | |
d3e2ba59 JD |
1007 | struct relay_session *session; |
1008 | ||
58eb9381 | 1009 | assert(conn); |
d3e2ba59 | 1010 | |
eea7556c MD |
1011 | health_code_update(); |
1012 | ||
2f8f53af | 1013 | /* Receive the request from the connected client. */ |
58eb9381 | 1014 | ret = recv_request(conn->sock, &request, sizeof(request)); |
2f8f53af | 1015 | if (ret < 0) { |
d3e2ba59 JD |
1016 | goto error; |
1017 | } | |
1018 | ||
eea7556c MD |
1019 | health_code_update(); |
1020 | ||
53efb85a MD |
1021 | memset(&response, 0, sizeof(response)); |
1022 | ||
c3b7390b JD |
1023 | if (!conn->viewer_session) { |
1024 | DBG("Client trying to attach before creating a live viewer session"); | |
1025 | response.status = htobe32(LTTNG_VIEWER_ATTACH_NO_SESSION); | |
1026 | goto send_reply; | |
1027 | } | |
1028 | ||
d3e2ba59 | 1029 | rcu_read_lock(); |
58eb9381 DG |
1030 | session = session_find_by_id(conn->sessions_ht, |
1031 | be64toh(request.session_id)); | |
2f8f53af | 1032 | if (!session) { |
d3e2ba59 JD |
1033 | DBG("Relay session %" PRIu64 " not found", |
1034 | be64toh(request.session_id)); | |
c4e361a4 | 1035 | response.status = htobe32(LTTNG_VIEWER_ATTACH_UNK); |
d3e2ba59 JD |
1036 | goto send_reply; |
1037 | } | |
2a174661 DG |
1038 | session_viewer_attach(session); |
1039 | DBG("Attach session ID %" PRIu64 " received", be64toh(request.session_id)); | |
d3e2ba59 | 1040 | |
2a174661 | 1041 | if (uatomic_read(&session->viewer_refcount) > 1) { |
d3e2ba59 | 1042 | DBG("Already a viewer attached"); |
c4e361a4 | 1043 | response.status = htobe32(LTTNG_VIEWER_ATTACH_ALREADY); |
2a174661 | 1044 | session_viewer_detach(session); |
d3e2ba59 JD |
1045 | goto send_reply; |
1046 | } else if (session->live_timer == 0) { | |
1047 | DBG("Not live session"); | |
c4e361a4 | 1048 | response.status = htobe32(LTTNG_VIEWER_ATTACH_NOT_LIVE); |
d3e2ba59 JD |
1049 | goto send_reply; |
1050 | } else { | |
d3e2ba59 | 1051 | send_streams = 1; |
c4e361a4 | 1052 | response.status = htobe32(LTTNG_VIEWER_ATTACH_OK); |
6763619c JD |
1053 | cds_list_add(&session->viewer_session_list, |
1054 | &conn->viewer_session->sessions_head); | |
d3e2ba59 JD |
1055 | } |
1056 | ||
1057 | switch (be32toh(request.seek)) { | |
c4e361a4 JD |
1058 | case LTTNG_VIEWER_SEEK_BEGINNING: |
1059 | case LTTNG_VIEWER_SEEK_LAST: | |
2f8f53af | 1060 | seek_type = be32toh(request.seek); |
d3e2ba59 JD |
1061 | break; |
1062 | default: | |
1063 | ERR("Wrong seek parameter"); | |
c4e361a4 | 1064 | response.status = htobe32(LTTNG_VIEWER_ATTACH_SEEK_ERR); |
d3e2ba59 JD |
1065 | send_streams = 0; |
1066 | goto send_reply; | |
1067 | } | |
1068 | ||
2f8f53af DG |
1069 | ret = make_viewer_streams(session, seek_type, &nb_streams, NULL, NULL); |
1070 | if (ret < 0) { | |
1071 | goto end_unlock; | |
d3e2ba59 | 1072 | } |
2f8f53af | 1073 | response.streams_count = htobe32(nb_streams); |
d3e2ba59 JD |
1074 | |
1075 | send_reply: | |
eea7556c | 1076 | health_code_update(); |
58eb9381 | 1077 | ret = send_response(conn->sock, &response, sizeof(response)); |
d3e2ba59 | 1078 | if (ret < 0) { |
d3e2ba59 JD |
1079 | goto end_unlock; |
1080 | } | |
eea7556c | 1081 | health_code_update(); |
d3e2ba59 JD |
1082 | |
1083 | /* | |
157df586 | 1084 | * Unknown or empty session, just return gracefully, the viewer knows what |
d3e2ba59 JD |
1085 | * is happening. |
1086 | */ | |
157df586 | 1087 | if (!send_streams || !nb_streams) { |
d3e2ba59 JD |
1088 | ret = 0; |
1089 | goto end_unlock; | |
1090 | } | |
1091 | ||
2f8f53af | 1092 | /* Send stream and ignore the sent flag. */ |
58eb9381 | 1093 | ret = send_viewer_streams(conn->sock, session, 1); |
2f8f53af DG |
1094 | if (ret < 0) { |
1095 | goto end_unlock; | |
d3e2ba59 | 1096 | } |
d3e2ba59 JD |
1097 | |
1098 | end_unlock: | |
1099 | rcu_read_unlock(); | |
4a9daf17 JD |
1100 | error: |
1101 | return ret; | |
1102 | } | |
1103 | ||
878c34cf DG |
1104 | /* |
1105 | * Open the index file if needed for the given vstream. | |
1106 | * | |
1107 | * If an index file is successfully opened, the index_read_fd of the stream is | |
1108 | * set with it. | |
1109 | * | |
1110 | * Return 0 on success, a negative value on error (-ENOENT if not ready yet). | |
1111 | */ | |
1112 | static int try_open_index(struct relay_viewer_stream *vstream, | |
1113 | struct relay_stream *rstream) | |
1114 | { | |
1115 | int ret = 0; | |
1116 | ||
1117 | assert(vstream); | |
1118 | assert(rstream); | |
1119 | ||
1120 | if (vstream->index_read_fd >= 0) { | |
1121 | goto end; | |
1122 | } | |
1123 | ||
1124 | /* | |
1125 | * First time, we open the index file and at least one index is ready. The | |
1126 | * race between the read and write of the total_index_received is | |
1127 | * acceptable here since the client will be notified to simply come back | |
1128 | * and get the next index. | |
1129 | */ | |
1130 | if (rstream->total_index_received <= 0) { | |
1131 | ret = -ENOENT; | |
1132 | goto end; | |
1133 | } | |
1134 | ret = index_open(vstream->path_name, vstream->channel_name, | |
1135 | vstream->tracefile_count, vstream->tracefile_count_current); | |
1136 | if (ret >= 0) { | |
1137 | vstream->index_read_fd = ret; | |
1138 | ret = 0; | |
1139 | goto end; | |
1140 | } | |
1141 | ||
1142 | end: | |
1143 | return ret; | |
1144 | } | |
1145 | ||
1146 | /* | |
1147 | * Check the status of the index for the given stream. This function updates | |
1148 | * the index structure if needed and can destroy the vstream also for the HUP | |
1149 | * situation. | |
1150 | * | |
1151 | * Return 0 means that we can proceed with the index. A value of 1 means that | |
1152 | * the index has been updated and is ready to be send to the client. A negative | |
1153 | * value indicates an error that can't be handled. | |
1154 | */ | |
1155 | static int check_index_status(struct relay_viewer_stream *vstream, | |
1156 | struct relay_stream *rstream, struct ctf_trace *trace, | |
1157 | struct lttng_viewer_index *index) | |
1158 | { | |
1159 | int ret; | |
1160 | ||
1161 | assert(vstream); | |
1162 | assert(rstream); | |
1163 | assert(index); | |
1164 | assert(trace); | |
1165 | ||
1166 | if (!rstream->close_flag) { | |
1167 | /* Rotate on abort (overwrite). */ | |
1168 | if (vstream->abort_flag) { | |
1169 | DBG("Viewer stream %" PRIu64 " rotate because of overwrite", | |
1170 | vstream->stream_handle); | |
1171 | ret = viewer_stream_rotate(vstream, rstream); | |
1172 | if (ret < 0) { | |
1173 | goto error; | |
1174 | } else if (ret == 1) { | |
1175 | /* EOF */ | |
1176 | index->status = htobe32(LTTNG_VIEWER_INDEX_HUP); | |
1177 | goto hup; | |
1178 | } | |
1179 | /* ret == 0 means successful so we continue. */ | |
1180 | } | |
1181 | ||
1182 | /* Check if we are in the same trace file at this point. */ | |
1183 | if (rstream->tracefile_count_current == vstream->tracefile_count_current) { | |
1184 | if (rstream->beacon_ts_end != -1ULL && | |
1185 | vstream->last_sent_index == rstream->total_index_received) { | |
1186 | /* | |
1187 | * We've received a synchronization beacon and the last index | |
1188 | * available has been sent, the index for now is inactive. | |
1189 | */ | |
1190 | index->status = htobe32(LTTNG_VIEWER_INDEX_INACTIVE); | |
1191 | index->timestamp_end = htobe64(rstream->beacon_ts_end); | |
528f2ffa | 1192 | index->stream_id = htobe64(rstream->ctf_stream_id); |
878c34cf | 1193 | goto index_ready; |
ca3aecdf | 1194 | } else if (rstream->total_index_received <= vstream->last_sent_index |
878c34cf DG |
1195 | && !vstream->close_write_flag) { |
1196 | /* | |
1197 | * Reader and writer are working in the same tracefile, so we care | |
1198 | * about the number of index received and sent. Otherwise, we read | |
1199 | * up to EOF. | |
1200 | */ | |
1201 | index->status = htobe32(LTTNG_VIEWER_INDEX_RETRY); | |
1202 | goto index_ready; | |
1203 | } | |
1204 | } | |
1205 | /* Nothing to do with the index, continue with it. */ | |
1206 | ret = 0; | |
1207 | } else if (rstream->close_flag && vstream->close_write_flag && | |
1208 | vstream->total_index_received == vstream->last_sent_index) { | |
1209 | /* Last index sent and current tracefile closed in write */ | |
1210 | index->status = htobe32(LTTNG_VIEWER_INDEX_HUP); | |
1211 | goto hup; | |
1212 | } else { | |
1213 | vstream->close_write_flag = 1; | |
1214 | ret = 0; | |
1215 | } | |
1216 | ||
1217 | error: | |
1218 | return ret; | |
1219 | ||
1220 | hup: | |
1221 | viewer_stream_delete(vstream); | |
1222 | viewer_stream_destroy(trace, vstream); | |
1223 | index_ready: | |
1224 | return 1; | |
1225 | } | |
1226 | ||
d3e2ba59 JD |
1227 | /* |
1228 | * Send the next index for a stream. | |
1229 | * | |
1230 | * Return 0 on success or else a negative value. | |
1231 | */ | |
1232 | static | |
58eb9381 | 1233 | int viewer_get_next_index(struct relay_connection *conn) |
d3e2ba59 JD |
1234 | { |
1235 | int ret; | |
878c34cf | 1236 | ssize_t read_ret; |
d3e2ba59 JD |
1237 | struct lttng_viewer_get_next_index request_index; |
1238 | struct lttng_viewer_index viewer_index; | |
50adc264 | 1239 | struct ctf_packet_index packet_index; |
d3e2ba59 JD |
1240 | struct relay_viewer_stream *vstream; |
1241 | struct relay_stream *rstream; | |
2a174661 DG |
1242 | struct ctf_trace *ctf_trace; |
1243 | struct relay_session *session; | |
d3e2ba59 | 1244 | |
58eb9381 | 1245 | assert(conn); |
d3e2ba59 JD |
1246 | |
1247 | DBG("Viewer get next index"); | |
1248 | ||
eea7556c | 1249 | health_code_update(); |
2f8f53af | 1250 | |
58eb9381 | 1251 | ret = recv_request(conn->sock, &request_index, sizeof(request_index)); |
2f8f53af | 1252 | if (ret < 0) { |
d3e2ba59 JD |
1253 | goto end; |
1254 | } | |
eea7556c | 1255 | health_code_update(); |
d3e2ba59 JD |
1256 | |
1257 | rcu_read_lock(); | |
6763619c JD |
1258 | vstream = viewer_stream_find_by_id(be64toh(request_index.stream_id)); |
1259 | if (!vstream) { | |
2a174661 DG |
1260 | ret = -1; |
1261 | goto end_unlock; | |
1262 | } | |
1263 | ||
6763619c JD |
1264 | session = session_find_by_id(conn->sessions_ht, vstream->session_id); |
1265 | if (!session) { | |
d3e2ba59 JD |
1266 | ret = -1; |
1267 | goto end_unlock; | |
1268 | } | |
1269 | ||
2a174661 DG |
1270 | ctf_trace = ctf_trace_find_by_path(session->ctf_traces_ht, vstream->path_name); |
1271 | assert(ctf_trace); | |
1272 | ||
d3e2ba59 JD |
1273 | memset(&viewer_index, 0, sizeof(viewer_index)); |
1274 | ||
1275 | /* | |
1276 | * The viewer should not ask for index on metadata stream. | |
1277 | */ | |
1278 | if (vstream->metadata_flag) { | |
c4e361a4 | 1279 | viewer_index.status = htobe32(LTTNG_VIEWER_INDEX_HUP); |
d3e2ba59 JD |
1280 | goto send_reply; |
1281 | } | |
1282 | ||
878c34cf DG |
1283 | rstream = stream_find_by_id(relay_streams_ht, vstream->stream_handle); |
1284 | assert(rstream); | |
1285 | ||
1286 | /* Try to open an index if one is needed for that stream. */ | |
1287 | ret = try_open_index(vstream, rstream); | |
1288 | if (ret < 0) { | |
0e6830aa | 1289 | if (ret == -ENOENT) { |
d3e2ba59 JD |
1290 | /* |
1291 | * The index is created only when the first data packet arrives, it | |
1292 | * might not be ready at the beginning of the session | |
1293 | */ | |
c4e361a4 | 1294 | viewer_index.status = htobe32(LTTNG_VIEWER_INDEX_RETRY); |
878c34cf DG |
1295 | } else { |
1296 | /* Unhandled error. */ | |
c4e361a4 | 1297 | viewer_index.status = htobe32(LTTNG_VIEWER_INDEX_ERR); |
d3e2ba59 | 1298 | } |
878c34cf | 1299 | goto send_reply; |
d3e2ba59 JD |
1300 | } |
1301 | ||
10b0cd2e | 1302 | pthread_mutex_lock(&rstream->viewer_stream_rotation_lock); |
878c34cf DG |
1303 | ret = check_index_status(vstream, rstream, ctf_trace, &viewer_index); |
1304 | pthread_mutex_unlock(&rstream->viewer_stream_rotation_lock); | |
1305 | if (ret < 0) { | |
5ccf125c | 1306 | goto end_unlock; |
878c34cf DG |
1307 | } else if (ret == 1) { |
1308 | /* | |
1309 | * This means the viewer index data structure has been populated by the | |
1310 | * check call thus we now send back the reply to the client. | |
1311 | */ | |
d3e2ba59 JD |
1312 | goto send_reply; |
1313 | } | |
878c34cf DG |
1314 | /* At this point, ret MUST be 0 thus we continue with the get. */ |
1315 | assert(!ret); | |
d3e2ba59 | 1316 | |
2a174661 DG |
1317 | if (!ctf_trace->metadata_received || |
1318 | ctf_trace->metadata_received > ctf_trace->metadata_sent) { | |
d3e2ba59 JD |
1319 | viewer_index.flags |= LTTNG_VIEWER_FLAG_NEW_METADATA; |
1320 | } | |
1321 | ||
f04a971b | 1322 | ret = check_new_streams(conn); |
4a9daf17 JD |
1323 | if (ret < 0) { |
1324 | goto end_unlock; | |
1325 | } else if (ret == 1) { | |
1326 | viewer_index.flags |= LTTNG_VIEWER_FLAG_NEW_STREAM; | |
1327 | } | |
1328 | ||
56611b06 | 1329 | pthread_mutex_lock(&rstream->viewer_stream_rotation_lock); |
cef0f7d5 JD |
1330 | pthread_mutex_lock(&vstream->overwrite_lock); |
1331 | if (vstream->abort_flag) { | |
878c34cf | 1332 | /* The file is being overwritten by the writer, we cannot use it. */ |
cef0f7d5 | 1333 | pthread_mutex_unlock(&vstream->overwrite_lock); |
2f8f53af | 1334 | ret = viewer_stream_rotate(vstream, rstream); |
56611b06 | 1335 | pthread_mutex_unlock(&rstream->viewer_stream_rotation_lock); |
cef0f7d5 JD |
1336 | if (ret < 0) { |
1337 | goto end_unlock; | |
a020f610 | 1338 | } else if (ret == 1) { |
c4e361a4 | 1339 | viewer_index.status = htobe32(LTTNG_VIEWER_INDEX_HUP); |
2f8f53af | 1340 | viewer_stream_delete(vstream); |
2a174661 | 1341 | viewer_stream_destroy(ctf_trace, vstream); |
878c34cf DG |
1342 | } else { |
1343 | viewer_index.status = htobe32(LTTNG_VIEWER_INDEX_RETRY); | |
cef0f7d5 JD |
1344 | } |
1345 | goto send_reply; | |
1346 | } | |
2f8f53af | 1347 | |
878c34cf | 1348 | read_ret = lttng_read(vstream->index_read_fd, &packet_index, |
6cd525e8 | 1349 | sizeof(packet_index)); |
cef0f7d5 | 1350 | pthread_mutex_unlock(&vstream->overwrite_lock); |
56611b06 | 1351 | pthread_mutex_unlock(&rstream->viewer_stream_rotation_lock); |
878c34cf DG |
1352 | if (read_ret < 0) { |
1353 | viewer_index.status = htobe32(LTTNG_VIEWER_INDEX_HUP); | |
1354 | viewer_stream_delete(vstream); | |
1355 | viewer_stream_destroy(ctf_trace, vstream); | |
1356 | goto send_reply; | |
1357 | } else if (read_ret < sizeof(packet_index)) { | |
10b0cd2e | 1358 | pthread_mutex_lock(&rstream->viewer_stream_rotation_lock); |
878c34cf | 1359 | if (vstream->close_write_flag) { |
2f8f53af | 1360 | ret = viewer_stream_rotate(vstream, rstream); |
6b6b9a5a | 1361 | if (ret < 0) { |
878c34cf | 1362 | pthread_mutex_unlock(&rstream->viewer_stream_rotation_lock); |
6b6b9a5a | 1363 | goto end_unlock; |
a020f610 | 1364 | } else if (ret == 1) { |
c4e361a4 | 1365 | viewer_index.status = htobe32(LTTNG_VIEWER_INDEX_HUP); |
2f8f53af | 1366 | viewer_stream_delete(vstream); |
2a174661 | 1367 | viewer_stream_destroy(ctf_trace, vstream); |
878c34cf DG |
1368 | } else { |
1369 | viewer_index.status = htobe32(LTTNG_VIEWER_INDEX_RETRY); | |
6b6b9a5a JD |
1370 | } |
1371 | } else { | |
878c34cf | 1372 | ERR("Relay reading index file %d", vstream->index_read_fd); |
c4e361a4 | 1373 | viewer_index.status = htobe32(LTTNG_VIEWER_INDEX_ERR); |
6b6b9a5a | 1374 | } |
878c34cf | 1375 | pthread_mutex_unlock(&rstream->viewer_stream_rotation_lock); |
6b6b9a5a | 1376 | goto send_reply; |
d3e2ba59 | 1377 | } else { |
c4e361a4 | 1378 | viewer_index.status = htobe32(LTTNG_VIEWER_INDEX_OK); |
d3e2ba59 JD |
1379 | vstream->last_sent_index++; |
1380 | } | |
1381 | ||
1382 | /* | |
1383 | * Indexes are stored in big endian, no need to switch before sending. | |
1384 | */ | |
1385 | viewer_index.offset = packet_index.offset; | |
1386 | viewer_index.packet_size = packet_index.packet_size; | |
1387 | viewer_index.content_size = packet_index.content_size; | |
1388 | viewer_index.timestamp_begin = packet_index.timestamp_begin; | |
1389 | viewer_index.timestamp_end = packet_index.timestamp_end; | |
1390 | viewer_index.events_discarded = packet_index.events_discarded; | |
1391 | viewer_index.stream_id = packet_index.stream_id; | |
1392 | ||
1393 | send_reply: | |
1394 | viewer_index.flags = htobe32(viewer_index.flags); | |
eea7556c | 1395 | health_code_update(); |
2f8f53af | 1396 | |
58eb9381 | 1397 | ret = send_response(conn->sock, &viewer_index, sizeof(viewer_index)); |
d3e2ba59 | 1398 | if (ret < 0) { |
d3e2ba59 JD |
1399 | goto end_unlock; |
1400 | } | |
eea7556c | 1401 | health_code_update(); |
d3e2ba59 | 1402 | |
2f8f53af | 1403 | DBG("Index %" PRIu64 " for stream %" PRIu64 " sent", |
d3e2ba59 JD |
1404 | vstream->last_sent_index, vstream->stream_handle); |
1405 | ||
1406 | end_unlock: | |
1407 | rcu_read_unlock(); | |
1408 | ||
d3e2ba59 JD |
1409 | end: |
1410 | return ret; | |
1411 | } | |
1412 | ||
1413 | /* | |
1414 | * Send the next index for a stream | |
1415 | * | |
1416 | * Return 0 on success or else a negative value. | |
1417 | */ | |
1418 | static | |
58eb9381 | 1419 | int viewer_get_packet(struct relay_connection *conn) |
d3e2ba59 JD |
1420 | { |
1421 | int ret, send_data = 0; | |
1422 | char *data = NULL; | |
1423 | uint32_t len = 0; | |
1424 | ssize_t read_len; | |
1425 | struct lttng_viewer_get_packet get_packet_info; | |
1426 | struct lttng_viewer_trace_packet reply; | |
1427 | struct relay_viewer_stream *stream; | |
6763619c | 1428 | struct relay_session *session; |
2a174661 | 1429 | struct ctf_trace *ctf_trace; |
d3e2ba59 | 1430 | |
58eb9381 | 1431 | assert(conn); |
d3e2ba59 JD |
1432 | |
1433 | DBG2("Relay get data packet"); | |
1434 | ||
eea7556c | 1435 | health_code_update(); |
2f8f53af | 1436 | |
58eb9381 | 1437 | ret = recv_request(conn->sock, &get_packet_info, sizeof(get_packet_info)); |
2f8f53af | 1438 | if (ret < 0) { |
d3e2ba59 JD |
1439 | goto end; |
1440 | } | |
eea7556c | 1441 | health_code_update(); |
d3e2ba59 | 1442 | |
0233a6a5 DG |
1443 | /* From this point on, the error label can be reached. */ |
1444 | memset(&reply, 0, sizeof(reply)); | |
1445 | ||
d3e2ba59 | 1446 | rcu_read_lock(); |
2f8f53af | 1447 | stream = viewer_stream_find_by_id(be64toh(get_packet_info.stream_id)); |
d3e2ba59 JD |
1448 | if (!stream) { |
1449 | goto error; | |
1450 | } | |
2a174661 | 1451 | |
6763619c JD |
1452 | session = session_find_by_id(conn->sessions_ht, stream->session_id); |
1453 | if (!session) { | |
1454 | ret = -1; | |
1455 | goto error; | |
1456 | } | |
1457 | ||
1458 | ctf_trace = ctf_trace_find_by_path(session->ctf_traces_ht, | |
2a174661 DG |
1459 | stream->path_name); |
1460 | assert(ctf_trace); | |
d3e2ba59 JD |
1461 | |
1462 | /* | |
1463 | * First time we read this stream, we need open the tracefile, we should | |
1464 | * only arrive here if an index has already been sent to the viewer, so the | |
1465 | * tracefile must exist, if it does not it is a fatal error. | |
1466 | */ | |
1467 | if (stream->read_fd < 0) { | |
1468 | char fullpath[PATH_MAX]; | |
1469 | ||
6b6b9a5a JD |
1470 | if (stream->tracefile_count > 0) { |
1471 | ret = snprintf(fullpath, PATH_MAX, "%s/%s_%" PRIu64, stream->path_name, | |
1472 | stream->channel_name, | |
1473 | stream->tracefile_count_current); | |
1474 | } else { | |
1475 | ret = snprintf(fullpath, PATH_MAX, "%s/%s", stream->path_name, | |
1476 | stream->channel_name); | |
1477 | } | |
d3e2ba59 JD |
1478 | if (ret < 0) { |
1479 | goto error; | |
1480 | } | |
1481 | ret = open(fullpath, O_RDONLY); | |
1482 | if (ret < 0) { | |
1483 | PERROR("Relay opening trace file"); | |
1484 | goto error; | |
1485 | } | |
1486 | stream->read_fd = ret; | |
1487 | } | |
1488 | ||
2a174661 DG |
1489 | if (!ctf_trace->metadata_received || |
1490 | ctf_trace->metadata_received > ctf_trace->metadata_sent) { | |
c4e361a4 | 1491 | reply.status = htobe32(LTTNG_VIEWER_GET_PACKET_ERR); |
d3e2ba59 | 1492 | reply.flags |= LTTNG_VIEWER_FLAG_NEW_METADATA; |
d3e2ba59 JD |
1493 | goto send_reply; |
1494 | } | |
1495 | ||
f04a971b | 1496 | ret = check_new_streams(conn); |
4a9daf17 JD |
1497 | if (ret < 0) { |
1498 | goto end_unlock; | |
1499 | } else if (ret == 1) { | |
c4e361a4 | 1500 | reply.status = htobe32(LTTNG_VIEWER_GET_PACKET_ERR); |
4a9daf17 JD |
1501 | reply.flags |= LTTNG_VIEWER_FLAG_NEW_STREAM; |
1502 | goto send_reply; | |
1503 | } | |
1504 | ||
d3e2ba59 JD |
1505 | len = be32toh(get_packet_info.len); |
1506 | data = zmalloc(len); | |
1507 | if (!data) { | |
1508 | PERROR("relay data zmalloc"); | |
1509 | goto error; | |
1510 | } | |
1511 | ||
1512 | ret = lseek(stream->read_fd, be64toh(get_packet_info.offset), SEEK_SET); | |
1513 | if (ret < 0) { | |
6b6b9a5a JD |
1514 | /* |
1515 | * If the read fd was closed by the streaming side, the | |
1516 | * abort_flag will be set to 1, otherwise it is an error. | |
1517 | */ | |
1518 | if (stream->abort_flag == 0) { | |
1519 | PERROR("lseek"); | |
1520 | goto error; | |
1521 | } | |
c4e361a4 | 1522 | reply.status = htobe32(LTTNG_VIEWER_GET_PACKET_EOF); |
6b6b9a5a | 1523 | goto send_reply; |
d3e2ba59 | 1524 | } |
6cd525e8 MD |
1525 | read_len = lttng_read(stream->read_fd, data, len); |
1526 | if (read_len < len) { | |
6b6b9a5a JD |
1527 | /* |
1528 | * If the read fd was closed by the streaming side, the | |
1529 | * abort_flag will be set to 1, otherwise it is an error. | |
1530 | */ | |
1531 | if (stream->abort_flag == 0) { | |
1532 | PERROR("Relay reading trace file, fd: %d, offset: %" PRIu64, | |
1533 | stream->read_fd, | |
1534 | be64toh(get_packet_info.offset)); | |
1535 | goto error; | |
1536 | } else { | |
c4e361a4 | 1537 | reply.status = htobe32(LTTNG_VIEWER_GET_PACKET_EOF); |
6b6b9a5a JD |
1538 | goto send_reply; |
1539 | } | |
d3e2ba59 | 1540 | } |
c4e361a4 | 1541 | reply.status = htobe32(LTTNG_VIEWER_GET_PACKET_OK); |
d3e2ba59 JD |
1542 | reply.len = htobe32(len); |
1543 | send_data = 1; | |
1544 | goto send_reply; | |
1545 | ||
1546 | error: | |
c4e361a4 | 1547 | reply.status = htobe32(LTTNG_VIEWER_GET_PACKET_ERR); |
d3e2ba59 JD |
1548 | |
1549 | send_reply: | |
1550 | reply.flags = htobe32(reply.flags); | |
eea7556c MD |
1551 | |
1552 | health_code_update(); | |
2f8f53af | 1553 | |
58eb9381 | 1554 | ret = send_response(conn->sock, &reply, sizeof(reply)); |
d3e2ba59 | 1555 | if (ret < 0) { |
d3e2ba59 JD |
1556 | goto end_unlock; |
1557 | } | |
eea7556c | 1558 | health_code_update(); |
d3e2ba59 JD |
1559 | |
1560 | if (send_data) { | |
eea7556c | 1561 | health_code_update(); |
58eb9381 | 1562 | ret = send_response(conn->sock, data, len); |
d3e2ba59 | 1563 | if (ret < 0) { |
d3e2ba59 JD |
1564 | goto end_unlock; |
1565 | } | |
eea7556c | 1566 | health_code_update(); |
d3e2ba59 JD |
1567 | } |
1568 | ||
1569 | DBG("Sent %u bytes for stream %" PRIu64, len, | |
1570 | be64toh(get_packet_info.stream_id)); | |
1571 | ||
1572 | end_unlock: | |
1573 | free(data); | |
1574 | rcu_read_unlock(); | |
1575 | ||
1576 | end: | |
1577 | return ret; | |
1578 | } | |
1579 | ||
1580 | /* | |
1581 | * Send the session's metadata | |
1582 | * | |
1583 | * Return 0 on success else a negative value. | |
1584 | */ | |
1585 | static | |
58eb9381 | 1586 | int viewer_get_metadata(struct relay_connection *conn) |
d3e2ba59 JD |
1587 | { |
1588 | int ret = 0; | |
1589 | ssize_t read_len; | |
1590 | uint64_t len = 0; | |
1591 | char *data = NULL; | |
1592 | struct lttng_viewer_get_metadata request; | |
1593 | struct lttng_viewer_metadata_packet reply; | |
1594 | struct relay_viewer_stream *stream; | |
2a174661 | 1595 | struct ctf_trace *ctf_trace; |
6763619c | 1596 | struct relay_session *session; |
d3e2ba59 | 1597 | |
58eb9381 | 1598 | assert(conn); |
d3e2ba59 JD |
1599 | |
1600 | DBG("Relay get metadata"); | |
1601 | ||
eea7556c | 1602 | health_code_update(); |
2f8f53af | 1603 | |
58eb9381 | 1604 | ret = recv_request(conn->sock, &request, sizeof(request)); |
2f8f53af | 1605 | if (ret < 0) { |
d3e2ba59 JD |
1606 | goto end; |
1607 | } | |
eea7556c | 1608 | health_code_update(); |
d3e2ba59 | 1609 | |
53efb85a MD |
1610 | memset(&reply, 0, sizeof(reply)); |
1611 | ||
d3e2ba59 | 1612 | rcu_read_lock(); |
2f8f53af | 1613 | stream = viewer_stream_find_by_id(be64toh(request.stream_id)); |
d3e2ba59 JD |
1614 | if (!stream || !stream->metadata_flag) { |
1615 | ERR("Invalid metadata stream"); | |
1616 | goto error; | |
1617 | } | |
d3e2ba59 | 1618 | |
6763619c JD |
1619 | session = session_find_by_id(conn->sessions_ht, stream->session_id); |
1620 | if (!session) { | |
1621 | ret = -1; | |
1622 | goto error; | |
1623 | } | |
1624 | ||
1625 | ctf_trace = ctf_trace_find_by_path(session->ctf_traces_ht, | |
2a174661 DG |
1626 | stream->path_name); |
1627 | assert(ctf_trace); | |
1628 | assert(ctf_trace->metadata_sent <= ctf_trace->metadata_received); | |
1629 | ||
1630 | len = ctf_trace->metadata_received - ctf_trace->metadata_sent; | |
d3e2ba59 | 1631 | if (len == 0) { |
c4e361a4 | 1632 | reply.status = htobe32(LTTNG_VIEWER_NO_NEW_METADATA); |
d3e2ba59 JD |
1633 | goto send_reply; |
1634 | } | |
1635 | ||
1636 | /* first time, we open the metadata file */ | |
1637 | if (stream->read_fd < 0) { | |
1638 | char fullpath[PATH_MAX]; | |
1639 | ||
1640 | ret = snprintf(fullpath, PATH_MAX, "%s/%s", stream->path_name, | |
1641 | stream->channel_name); | |
1642 | if (ret < 0) { | |
1643 | goto error; | |
1644 | } | |
1645 | ret = open(fullpath, O_RDONLY); | |
1646 | if (ret < 0) { | |
1647 | PERROR("Relay opening metadata file"); | |
1648 | goto error; | |
1649 | } | |
1650 | stream->read_fd = ret; | |
1651 | } | |
1652 | ||
1653 | reply.len = htobe64(len); | |
1654 | data = zmalloc(len); | |
1655 | if (!data) { | |
1656 | PERROR("viewer metadata zmalloc"); | |
1657 | goto error; | |
1658 | } | |
1659 | ||
6cd525e8 MD |
1660 | read_len = lttng_read(stream->read_fd, data, len); |
1661 | if (read_len < len) { | |
d3e2ba59 JD |
1662 | PERROR("Relay reading metadata file"); |
1663 | goto error; | |
1664 | } | |
2a174661 | 1665 | ctf_trace->metadata_sent += read_len; |
c4e361a4 | 1666 | reply.status = htobe32(LTTNG_VIEWER_METADATA_OK); |
d3e2ba59 JD |
1667 | goto send_reply; |
1668 | ||
1669 | error: | |
c4e361a4 | 1670 | reply.status = htobe32(LTTNG_VIEWER_METADATA_ERR); |
d3e2ba59 JD |
1671 | |
1672 | send_reply: | |
eea7556c | 1673 | health_code_update(); |
58eb9381 | 1674 | ret = send_response(conn->sock, &reply, sizeof(reply)); |
d3e2ba59 | 1675 | if (ret < 0) { |
d3e2ba59 JD |
1676 | goto end_unlock; |
1677 | } | |
eea7556c | 1678 | health_code_update(); |
d3e2ba59 JD |
1679 | |
1680 | if (len > 0) { | |
58eb9381 | 1681 | ret = send_response(conn->sock, data, len); |
d3e2ba59 | 1682 | if (ret < 0) { |
d3e2ba59 JD |
1683 | goto end_unlock; |
1684 | } | |
1685 | } | |
1686 | ||
1687 | DBG("Sent %" PRIu64 " bytes of metadata for stream %" PRIu64, len, | |
1688 | be64toh(request.stream_id)); | |
1689 | ||
1690 | DBG("Metadata sent"); | |
1691 | ||
1692 | end_unlock: | |
1693 | free(data); | |
1694 | rcu_read_unlock(); | |
1695 | end: | |
1696 | return ret; | |
1697 | } | |
1698 | ||
c3b7390b JD |
1699 | /* |
1700 | * Create a viewer session. | |
1701 | * | |
1702 | * Return 0 on success or else a negative value. | |
1703 | */ | |
1704 | static | |
1705 | int viewer_create_session(struct relay_connection *conn) | |
1706 | { | |
1707 | int ret; | |
1708 | struct lttng_viewer_create_session_response resp; | |
1709 | ||
1710 | DBG("Viewer create session received"); | |
1711 | ||
53efb85a | 1712 | memset(&resp, 0, sizeof(resp)); |
c3b7390b | 1713 | resp.status = htobe32(LTTNG_VIEWER_CREATE_SESSION_OK); |
32816a93 | 1714 | conn->viewer_session = zmalloc(sizeof(*conn->viewer_session)); |
c3b7390b JD |
1715 | if (!conn->viewer_session) { |
1716 | ERR("Allocation viewer session"); | |
1717 | resp.status = htobe32(LTTNG_VIEWER_CREATE_SESSION_ERR); | |
1718 | goto send_reply; | |
1719 | } | |
1720 | CDS_INIT_LIST_HEAD(&conn->viewer_session->sessions_head); | |
1721 | ||
1722 | send_reply: | |
1723 | health_code_update(); | |
1724 | ret = send_response(conn->sock, &resp, sizeof(resp)); | |
1725 | if (ret < 0) { | |
1726 | goto end; | |
1727 | } | |
1728 | health_code_update(); | |
1729 | ret = 0; | |
1730 | ||
1731 | end: | |
1732 | return ret; | |
1733 | } | |
1734 | ||
1735 | ||
d3e2ba59 JD |
1736 | /* |
1737 | * live_relay_unknown_command: send -1 if received unknown command | |
1738 | */ | |
1739 | static | |
58eb9381 | 1740 | void live_relay_unknown_command(struct relay_connection *conn) |
d3e2ba59 JD |
1741 | { |
1742 | struct lttcomm_relayd_generic_reply reply; | |
d3e2ba59 | 1743 | |
53efb85a | 1744 | memset(&reply, 0, sizeof(reply)); |
d3e2ba59 | 1745 | reply.ret_code = htobe32(LTTNG_ERR_UNK); |
58eb9381 | 1746 | (void) send_response(conn->sock, &reply, sizeof(reply)); |
d3e2ba59 JD |
1747 | } |
1748 | ||
1749 | /* | |
1750 | * Process the commands received on the control socket | |
1751 | */ | |
1752 | static | |
1753 | int process_control(struct lttng_viewer_cmd *recv_hdr, | |
58eb9381 | 1754 | struct relay_connection *conn) |
d3e2ba59 JD |
1755 | { |
1756 | int ret = 0; | |
2f8f53af DG |
1757 | uint32_t msg_value; |
1758 | ||
1759 | assert(recv_hdr); | |
58eb9381 | 1760 | assert(conn); |
2f8f53af DG |
1761 | |
1762 | msg_value = be32toh(recv_hdr->cmd); | |
1763 | ||
1764 | /* | |
1765 | * Make sure we've done the version check before any command other then a | |
1766 | * new client connection. | |
1767 | */ | |
c4e361a4 | 1768 | if (msg_value != LTTNG_VIEWER_CONNECT && !conn->version_check_done) { |
58eb9381 | 1769 | ERR("Viewer conn value %" PRIu32 " before version check", msg_value); |
2f8f53af DG |
1770 | ret = -1; |
1771 | goto end; | |
1772 | } | |
d3e2ba59 | 1773 | |
2f8f53af | 1774 | switch (msg_value) { |
c4e361a4 | 1775 | case LTTNG_VIEWER_CONNECT: |
58eb9381 | 1776 | ret = viewer_connect(conn); |
d3e2ba59 | 1777 | break; |
c4e361a4 | 1778 | case LTTNG_VIEWER_LIST_SESSIONS: |
58eb9381 | 1779 | ret = viewer_list_sessions(conn); |
d3e2ba59 | 1780 | break; |
c4e361a4 | 1781 | case LTTNG_VIEWER_ATTACH_SESSION: |
58eb9381 | 1782 | ret = viewer_attach_session(conn); |
d3e2ba59 | 1783 | break; |
c4e361a4 | 1784 | case LTTNG_VIEWER_GET_NEXT_INDEX: |
58eb9381 | 1785 | ret = viewer_get_next_index(conn); |
d3e2ba59 | 1786 | break; |
c4e361a4 | 1787 | case LTTNG_VIEWER_GET_PACKET: |
58eb9381 | 1788 | ret = viewer_get_packet(conn); |
d3e2ba59 | 1789 | break; |
c4e361a4 | 1790 | case LTTNG_VIEWER_GET_METADATA: |
58eb9381 | 1791 | ret = viewer_get_metadata(conn); |
d3e2ba59 | 1792 | break; |
c4e361a4 | 1793 | case LTTNG_VIEWER_GET_NEW_STREAMS: |
58eb9381 | 1794 | ret = viewer_get_new_streams(conn); |
80e8027a | 1795 | break; |
c3b7390b JD |
1796 | case LTTNG_VIEWER_CREATE_SESSION: |
1797 | ret = viewer_create_session(conn); | |
1798 | break; | |
d3e2ba59 JD |
1799 | default: |
1800 | ERR("Received unknown viewer command (%u)", be32toh(recv_hdr->cmd)); | |
58eb9381 | 1801 | live_relay_unknown_command(conn); |
d3e2ba59 JD |
1802 | ret = -1; |
1803 | goto end; | |
1804 | } | |
1805 | ||
1806 | end: | |
1807 | return ret; | |
1808 | } | |
1809 | ||
1810 | static | |
58eb9381 | 1811 | void cleanup_connection_pollfd(struct lttng_poll_event *events, int pollfd) |
d3e2ba59 JD |
1812 | { |
1813 | int ret; | |
1814 | ||
1815 | assert(events); | |
1816 | ||
58eb9381 | 1817 | (void) lttng_poll_del(events, pollfd); |
d3e2ba59 JD |
1818 | |
1819 | ret = close(pollfd); | |
1820 | if (ret < 0) { | |
1821 | ERR("Closing pollfd %d", pollfd); | |
1822 | } | |
1823 | } | |
1824 | ||
d3e2ba59 | 1825 | /* |
58eb9381 | 1826 | * Delete and destroy a connection. |
d3e2ba59 JD |
1827 | * |
1828 | * RCU read side lock MUST be acquired. | |
1829 | */ | |
58eb9381 DG |
1830 | static void destroy_connection(struct lttng_ht *relay_connections_ht, |
1831 | struct relay_connection *conn) | |
d3e2ba59 | 1832 | { |
6763619c | 1833 | struct relay_session *session, *tmp_session; |
d3e2ba59 JD |
1834 | |
1835 | assert(relay_connections_ht); | |
58eb9381 | 1836 | assert(conn); |
d3e2ba59 | 1837 | |
58eb9381 | 1838 | connection_delete(relay_connections_ht, conn); |
d3e2ba59 | 1839 | |
6763619c JD |
1840 | if (!conn->viewer_session) { |
1841 | goto end; | |
1842 | } | |
1843 | ||
58eb9381 | 1844 | rcu_read_lock(); |
6763619c JD |
1845 | cds_list_for_each_entry_safe(session, tmp_session, |
1846 | &conn->viewer_session->sessions_head, | |
1847 | viewer_session_list) { | |
1848 | DBG("Cleaning connection of session ID %" PRIu64, session->id); | |
d227d5bd | 1849 | cleanup_session(conn, session); |
2a174661 DG |
1850 | } |
1851 | rcu_read_unlock(); | |
d3e2ba59 | 1852 | |
6763619c | 1853 | end: |
58eb9381 | 1854 | connection_destroy(conn); |
d3e2ba59 JD |
1855 | } |
1856 | ||
1857 | /* | |
1858 | * This thread does the actual work | |
1859 | */ | |
1860 | static | |
1861 | void *thread_worker(void *data) | |
1862 | { | |
1863 | int ret, err = -1; | |
1864 | uint32_t nb_fd; | |
58eb9381 | 1865 | struct relay_connection *conn; |
d3e2ba59 JD |
1866 | struct lttng_poll_event events; |
1867 | struct lttng_ht *relay_connections_ht; | |
d3e2ba59 JD |
1868 | struct lttng_ht_iter iter; |
1869 | struct lttng_viewer_cmd recv_hdr; | |
1870 | struct relay_local_data *relay_ctx = (struct relay_local_data *) data; | |
1871 | struct lttng_ht *sessions_ht = relay_ctx->sessions_ht; | |
d3e2ba59 JD |
1872 | |
1873 | DBG("[thread] Live viewer relay worker started"); | |
1874 | ||
1875 | rcu_register_thread(); | |
1876 | ||
eea7556c MD |
1877 | health_register(health_relayd, HEALTH_RELAYD_TYPE_LIVE_WORKER); |
1878 | ||
9b5e0863 MD |
1879 | if (testpoint(relayd_thread_live_worker)) { |
1880 | goto error_testpoint; | |
1881 | } | |
1882 | ||
d3e2ba59 JD |
1883 | /* table of connections indexed on socket */ |
1884 | relay_connections_ht = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG); | |
1885 | if (!relay_connections_ht) { | |
1886 | goto relay_connections_ht_error; | |
1887 | } | |
1888 | ||
1889 | ret = create_thread_poll_set(&events, 2); | |
1890 | if (ret < 0) { | |
1891 | goto error_poll_create; | |
1892 | } | |
1893 | ||
58eb9381 | 1894 | ret = lttng_poll_add(&events, live_conn_pipe[0], LPOLLIN | LPOLLRDHUP); |
d3e2ba59 JD |
1895 | if (ret < 0) { |
1896 | goto error; | |
1897 | } | |
1898 | ||
1899 | restart: | |
1900 | while (1) { | |
1901 | int i; | |
1902 | ||
eea7556c MD |
1903 | health_code_update(); |
1904 | ||
d3e2ba59 JD |
1905 | /* Infinite blocking call, waiting for transmission */ |
1906 | DBG3("Relayd live viewer worker thread polling..."); | |
eea7556c | 1907 | health_poll_entry(); |
d3e2ba59 | 1908 | ret = lttng_poll_wait(&events, -1); |
eea7556c | 1909 | health_poll_exit(); |
d3e2ba59 JD |
1910 | if (ret < 0) { |
1911 | /* | |
1912 | * Restart interrupted system call. | |
1913 | */ | |
1914 | if (errno == EINTR) { | |
1915 | goto restart; | |
1916 | } | |
1917 | goto error; | |
1918 | } | |
1919 | ||
1920 | nb_fd = ret; | |
1921 | ||
1922 | /* | |
1923 | * Process control. The control connection is prioritised so we don't | |
1924 | * starve it with high throughput tracing data on the data | |
1925 | * connection. | |
1926 | */ | |
1927 | for (i = 0; i < nb_fd; i++) { | |
1928 | /* Fetch once the poll data */ | |
1929 | uint32_t revents = LTTNG_POLL_GETEV(&events, i); | |
1930 | int pollfd = LTTNG_POLL_GETFD(&events, i); | |
1931 | ||
eea7556c MD |
1932 | health_code_update(); |
1933 | ||
e0077699 MD |
1934 | if (!revents) { |
1935 | /* No activity for this FD (poll implementation). */ | |
1936 | continue; | |
1937 | } | |
1938 | ||
d3e2ba59 | 1939 | /* Thread quit pipe has been closed. Killing thread. */ |
bcf4a440 | 1940 | ret = check_thread_quit_pipe(pollfd, revents); |
d3e2ba59 JD |
1941 | if (ret) { |
1942 | err = 0; | |
1943 | goto exit; | |
1944 | } | |
1945 | ||
58eb9381 DG |
1946 | /* Inspect the relay conn pipe for new connection */ |
1947 | if (pollfd == live_conn_pipe[0]) { | |
d3e2ba59 JD |
1948 | if (revents & (LPOLLERR | LPOLLHUP | LPOLLRDHUP)) { |
1949 | ERR("Relay live pipe error"); | |
1950 | goto error; | |
1951 | } else if (revents & LPOLLIN) { | |
58eb9381 | 1952 | ret = lttng_read(live_conn_pipe[0], &conn, sizeof(conn)); |
d3e2ba59 JD |
1953 | if (ret < 0) { |
1954 | goto error; | |
1955 | } | |
58eb9381 DG |
1956 | conn->sessions_ht = sessions_ht; |
1957 | connection_init(conn); | |
1958 | lttng_poll_add(&events, conn->sock->fd, | |
1959 | LPOLLIN | LPOLLRDHUP); | |
1960 | rcu_read_lock(); | |
1961 | lttng_ht_add_unique_ulong(relay_connections_ht, | |
1962 | &conn->sock_n); | |
d3e2ba59 | 1963 | rcu_read_unlock(); |
58eb9381 | 1964 | DBG("Connection socket %d added", conn->sock->fd); |
d3e2ba59 | 1965 | } |
58eb9381 DG |
1966 | } else { |
1967 | rcu_read_lock(); | |
1968 | conn = connection_find_by_sock(relay_connections_ht, pollfd); | |
1969 | /* If not found, there is a synchronization issue. */ | |
1970 | assert(conn); | |
1971 | ||
1972 | if (revents & (LPOLLERR | LPOLLHUP | LPOLLRDHUP)) { | |
1973 | cleanup_connection_pollfd(&events, pollfd); | |
1974 | destroy_connection(relay_connections_ht, conn); | |
d3e2ba59 | 1975 | } else if (revents & LPOLLIN) { |
58eb9381 DG |
1976 | ret = conn->sock->ops->recvmsg(conn->sock, &recv_hdr, |
1977 | sizeof(recv_hdr), 0); | |
d3e2ba59 | 1978 | if (ret <= 0) { |
58eb9381 DG |
1979 | /* Connection closed */ |
1980 | cleanup_connection_pollfd(&events, pollfd); | |
1981 | destroy_connection(relay_connections_ht, conn); | |
1982 | DBG("Viewer control conn closed with %d", pollfd); | |
d3e2ba59 | 1983 | } else { |
58eb9381 | 1984 | ret = process_control(&recv_hdr, conn); |
d3e2ba59 JD |
1985 | if (ret < 0) { |
1986 | /* Clear the session on error. */ | |
58eb9381 DG |
1987 | cleanup_connection_pollfd(&events, pollfd); |
1988 | destroy_connection(relay_connections_ht, conn); | |
d3e2ba59 JD |
1989 | DBG("Viewer connection closed with %d", pollfd); |
1990 | } | |
1991 | } | |
1992 | } | |
1993 | rcu_read_unlock(); | |
1994 | } | |
1995 | } | |
1996 | } | |
1997 | ||
1998 | exit: | |
1999 | error: | |
2000 | lttng_poll_clean(&events); | |
2001 | ||
58eb9381 | 2002 | /* Cleanup reamaining connection object. */ |
d3e2ba59 | 2003 | rcu_read_lock(); |
58eb9381 DG |
2004 | cds_lfht_for_each_entry(relay_connections_ht->ht, &iter.iter, conn, |
2005 | sock_n.node) { | |
eea7556c | 2006 | health_code_update(); |
58eb9381 | 2007 | destroy_connection(relay_connections_ht, conn); |
d3e2ba59 JD |
2008 | } |
2009 | rcu_read_unlock(); | |
2010 | error_poll_create: | |
2011 | lttng_ht_destroy(relay_connections_ht); | |
2012 | relay_connections_ht_error: | |
58eb9381 DG |
2013 | /* Close relay conn pipes */ |
2014 | utils_close_pipe(live_conn_pipe); | |
d3e2ba59 JD |
2015 | if (err) { |
2016 | DBG("Viewer worker thread exited with error"); | |
2017 | } | |
2018 | DBG("Viewer worker thread cleanup complete"); | |
9b5e0863 | 2019 | error_testpoint: |
eea7556c MD |
2020 | if (err) { |
2021 | health_error(); | |
2022 | ERR("Health error occurred in %s", __func__); | |
2023 | } | |
2024 | health_unregister(health_relayd); | |
770f96f4 MD |
2025 | if (lttng_relay_stop_threads()) { |
2026 | ERR("Error stopping threads"); | |
77c54fed | 2027 | } |
d3e2ba59 JD |
2028 | rcu_unregister_thread(); |
2029 | return NULL; | |
2030 | } | |
2031 | ||
2032 | /* | |
2033 | * Create the relay command pipe to wake thread_manage_apps. | |
2034 | * Closed in cleanup(). | |
2035 | */ | |
58eb9381 | 2036 | static int create_conn_pipe(void) |
d3e2ba59 | 2037 | { |
77c54fed MD |
2038 | return utils_create_pipe_cloexec(live_conn_pipe); |
2039 | } | |
d3e2ba59 | 2040 | |
77c54fed | 2041 | int relayd_live_join(void) |
d3e2ba59 | 2042 | { |
77c54fed | 2043 | int ret, retval = 0; |
d3e2ba59 JD |
2044 | void *status; |
2045 | ||
d3e2ba59 | 2046 | ret = pthread_join(live_listener_thread, &status); |
77c54fed MD |
2047 | if (ret) { |
2048 | errno = ret; | |
d3e2ba59 | 2049 | PERROR("pthread_join live listener"); |
77c54fed | 2050 | retval = -1; |
d3e2ba59 JD |
2051 | } |
2052 | ||
2053 | ret = pthread_join(live_worker_thread, &status); | |
77c54fed MD |
2054 | if (ret) { |
2055 | errno = ret; | |
d3e2ba59 | 2056 | PERROR("pthread_join live worker"); |
77c54fed | 2057 | retval = -1; |
d3e2ba59 JD |
2058 | } |
2059 | ||
2060 | ret = pthread_join(live_dispatcher_thread, &status); | |
77c54fed MD |
2061 | if (ret) { |
2062 | errno = ret; | |
d3e2ba59 | 2063 | PERROR("pthread_join live dispatcher"); |
77c54fed | 2064 | retval = -1; |
d3e2ba59 JD |
2065 | } |
2066 | ||
77c54fed | 2067 | cleanup_relayd_live(); |
d3e2ba59 | 2068 | |
77c54fed | 2069 | return retval; |
d3e2ba59 JD |
2070 | } |
2071 | ||
2072 | /* | |
2073 | * main | |
2074 | */ | |
77c54fed | 2075 | int relayd_live_create(struct lttng_uri *uri, |
0b242f62 | 2076 | struct relay_local_data *relay_ctx) |
d3e2ba59 | 2077 | { |
77c54fed | 2078 | int ret = 0, retval = 0; |
d3e2ba59 JD |
2079 | void *status; |
2080 | int is_root; | |
2081 | ||
77c54fed MD |
2082 | if (!uri) { |
2083 | retval = -1; | |
2084 | goto exit_init_data; | |
2085 | } | |
d3e2ba59 JD |
2086 | live_uri = uri; |
2087 | ||
d3e2ba59 JD |
2088 | /* Check if daemon is UID = 0 */ |
2089 | is_root = !getuid(); | |
2090 | ||
2091 | if (!is_root) { | |
2092 | if (live_uri->port < 1024) { | |
2093 | ERR("Need to be root to use ports < 1024"); | |
77c54fed MD |
2094 | retval = -1; |
2095 | goto exit_init_data; | |
d3e2ba59 JD |
2096 | } |
2097 | } | |
2098 | ||
2099 | /* Setup the thread apps communication pipe. */ | |
77c54fed MD |
2100 | if (create_conn_pipe()) { |
2101 | retval = -1; | |
2102 | goto exit_init_data; | |
d3e2ba59 JD |
2103 | } |
2104 | ||
2105 | /* Init relay command queue. */ | |
8bdee6e2 | 2106 | cds_wfcq_init(&viewer_conn_queue.head, &viewer_conn_queue.tail); |
d3e2ba59 JD |
2107 | |
2108 | /* Set up max poll set size */ | |
2109 | lttng_poll_set_max_size(); | |
2110 | ||
2111 | /* Setup the dispatcher thread */ | |
2112 | ret = pthread_create(&live_dispatcher_thread, NULL, | |
2113 | thread_dispatcher, (void *) NULL); | |
77c54fed MD |
2114 | if (ret) { |
2115 | errno = ret; | |
d3e2ba59 | 2116 | PERROR("pthread_create viewer dispatcher"); |
77c54fed MD |
2117 | retval = -1; |
2118 | goto exit_dispatcher_thread; | |
d3e2ba59 JD |
2119 | } |
2120 | ||
2121 | /* Setup the worker thread */ | |
2122 | ret = pthread_create(&live_worker_thread, NULL, | |
2123 | thread_worker, relay_ctx); | |
77c54fed MD |
2124 | if (ret) { |
2125 | errno = ret; | |
d3e2ba59 | 2126 | PERROR("pthread_create viewer worker"); |
77c54fed MD |
2127 | retval = -1; |
2128 | goto exit_worker_thread; | |
d3e2ba59 JD |
2129 | } |
2130 | ||
2131 | /* Setup the listener thread */ | |
2132 | ret = pthread_create(&live_listener_thread, NULL, | |
2133 | thread_listener, (void *) NULL); | |
77c54fed MD |
2134 | if (ret) { |
2135 | errno = ret; | |
d3e2ba59 | 2136 | PERROR("pthread_create viewer listener"); |
77c54fed MD |
2137 | retval = -1; |
2138 | goto exit_listener_thread; | |
d3e2ba59 JD |
2139 | } |
2140 | ||
77c54fed MD |
2141 | /* |
2142 | * All OK, started all threads. | |
2143 | */ | |
2144 | return retval; | |
2145 | ||
d3e2ba59 | 2146 | |
d3e2ba59 | 2147 | ret = pthread_join(live_listener_thread, &status); |
77c54fed MD |
2148 | if (ret) { |
2149 | errno = ret; | |
d3e2ba59 | 2150 | PERROR("pthread_join live listener"); |
77c54fed | 2151 | retval = -1; |
d3e2ba59 | 2152 | } |
77c54fed | 2153 | exit_listener_thread: |
d3e2ba59 | 2154 | |
d3e2ba59 | 2155 | ret = pthread_join(live_worker_thread, &status); |
77c54fed MD |
2156 | if (ret) { |
2157 | errno = ret; | |
d3e2ba59 | 2158 | PERROR("pthread_join live worker"); |
77c54fed | 2159 | retval = -1; |
d3e2ba59 | 2160 | } |
77c54fed | 2161 | exit_worker_thread: |
d3e2ba59 | 2162 | |
d3e2ba59 | 2163 | ret = pthread_join(live_dispatcher_thread, &status); |
77c54fed MD |
2164 | if (ret) { |
2165 | errno = ret; | |
d3e2ba59 | 2166 | PERROR("pthread_join live dispatcher"); |
77c54fed | 2167 | retval = -1; |
d3e2ba59 | 2168 | } |
77c54fed | 2169 | exit_dispatcher_thread: |
d3e2ba59 | 2170 | |
77c54fed MD |
2171 | exit_init_data: |
2172 | cleanup_relayd_live(); | |
d3e2ba59 | 2173 | |
77c54fed | 2174 | return retval; |
d3e2ba59 | 2175 | } |