Commit | Line | Data |
---|---|---|
00e2e675 | 1 | /* |
ab5be9fa MJ |
2 | * Copyright (C) 2012 David Goulet <dgoulet@efficios.com> |
3 | * Copyright (C) 2018 Jérémie Galarneau <jeremie.galarneau@efficios.com> | |
00e2e675 | 4 | * |
ab5be9fa | 5 | * SPDX-License-Identifier: GPL-2.0-only |
00e2e675 | 6 | * |
00e2e675 DG |
7 | */ |
8 | ||
6c1c0768 | 9 | #define _LGPL_SOURCE |
28ab034a JG |
10 | #include "consumer.hpp" |
11 | #include "health-sessiond.hpp" | |
12 | #include "lttng-sessiond.hpp" | |
13 | #include "ust-app.hpp" | |
14 | #include "utils.hpp" | |
00e2e675 | 15 | |
c9e313bc SM |
16 | #include <common/common.hpp> |
17 | #include <common/defaults.hpp> | |
c9e313bc SM |
18 | #include <common/relayd/relayd.hpp> |
19 | #include <common/string-utils/format.hpp> | |
56047f5a | 20 | #include <common/urcu.hpp> |
28ab034a | 21 | #include <common/uri.hpp> |
00e2e675 | 22 | |
28ab034a JG |
23 | #include <inttypes.h> |
24 | #include <stdio.h> | |
25 | #include <stdlib.h> | |
26 | #include <string.h> | |
27 | #include <sys/stat.h> | |
28 | #include <sys/types.h> | |
29 | #include <unistd.h> | |
00e2e675 | 30 | |
3b967712 MD |
31 | /* |
32 | * Return allocated full pathname of the session using the consumer trace path | |
33 | * and subdir if available. | |
34 | * | |
35 | * The caller can safely free(3) the returned value. On error, NULL is | |
36 | * returned. | |
37 | */ | |
38 | char *setup_channel_trace_path(struct consumer_output *consumer, | |
28ab034a JG |
39 | const char *session_path, |
40 | size_t *consumer_path_offset) | |
3b967712 MD |
41 | { |
42 | int ret; | |
43 | char *pathname; | |
44 | ||
a0377dfe FD |
45 | LTTNG_ASSERT(consumer); |
46 | LTTNG_ASSERT(session_path); | |
3b967712 MD |
47 | |
48 | health_code_update(); | |
49 | ||
50 | /* | |
51 | * Allocate the string ourself to make sure we never exceed | |
52 | * LTTNG_PATH_MAX. | |
53 | */ | |
64803277 | 54 | pathname = calloc<char>(LTTNG_PATH_MAX); |
3b967712 MD |
55 | if (!pathname) { |
56 | goto error; | |
57 | } | |
58 | ||
59 | /* Get correct path name destination */ | |
28ab034a JG |
60 | if (consumer->type == CONSUMER_DST_NET && consumer->relay_major_version == 2 && |
61 | consumer->relay_minor_version < 11) { | |
62 | ret = snprintf(pathname, | |
63 | LTTNG_PATH_MAX, | |
64 | "%s%s/%s/%s", | |
65 | consumer->dst.net.base_dir, | |
66 | consumer->chunk_path, | |
67 | consumer->domain_subdir, | |
68 | session_path); | |
5da88b0f | 69 | *consumer_path_offset = 0; |
3b967712 | 70 | } else { |
28ab034a JG |
71 | ret = snprintf( |
72 | pathname, LTTNG_PATH_MAX, "%s/%s", consumer->domain_subdir, session_path); | |
5da88b0f | 73 | *consumer_path_offset = strlen(consumer->domain_subdir) + 1; |
3b967712 | 74 | } |
28ab034a | 75 | DBG3("Consumer trace path relative to current trace chunk: \"%s\"", pathname); |
3b967712 MD |
76 | if (ret < 0) { |
77 | PERROR("Failed to format channel path"); | |
78 | goto error; | |
79 | } else if (ret >= LTTNG_PATH_MAX) { | |
80 | ERR("Truncation occurred while formatting channel path"); | |
3b967712 MD |
81 | goto error; |
82 | } | |
83 | ||
84 | return pathname; | |
85 | error: | |
86 | free(pathname); | |
cd9adb8b | 87 | return nullptr; |
3b967712 MD |
88 | } |
89 | ||
52898cb1 DG |
90 | /* |
91 | * Send a data payload using a given consumer socket of size len. | |
92 | * | |
93 | * The consumer socket lock MUST be acquired before calling this since this | |
94 | * function can change the fd value. | |
95 | * | |
96 | * Return 0 on success else a negative value on error. | |
97 | */ | |
28ab034a | 98 | int consumer_socket_send(struct consumer_socket *socket, const void *msg, size_t len) |
52898cb1 DG |
99 | { |
100 | int fd; | |
101 | ssize_t size; | |
102 | ||
a0377dfe FD |
103 | LTTNG_ASSERT(socket); |
104 | LTTNG_ASSERT(socket->fd_ptr); | |
105 | LTTNG_ASSERT(msg); | |
52898cb1 DG |
106 | |
107 | /* Consumer socket is invalid. Stopping. */ | |
9363801e | 108 | fd = *socket->fd_ptr; |
52898cb1 DG |
109 | if (fd < 0) { |
110 | goto error; | |
111 | } | |
112 | ||
113 | size = lttcomm_send_unix_sock(fd, msg, len); | |
114 | if (size < 0) { | |
115 | /* The above call will print a PERROR on error. */ | |
116 | DBG("Error when sending data to consumer on sock %d", fd); | |
117 | /* | |
92db7cdc DG |
118 | * At this point, the socket is not usable anymore thus closing it and |
119 | * setting the file descriptor to -1 so it is not reused. | |
52898cb1 DG |
120 | */ |
121 | ||
122 | /* This call will PERROR on error. */ | |
123 | (void) lttcomm_close_unix_sock(fd); | |
9363801e | 124 | *socket->fd_ptr = -1; |
52898cb1 DG |
125 | goto error; |
126 | } | |
127 | ||
128 | return 0; | |
129 | ||
130 | error: | |
131 | return -1; | |
132 | } | |
133 | ||
134 | /* | |
135 | * Receive a data payload using a given consumer socket of size len. | |
136 | * | |
137 | * The consumer socket lock MUST be acquired before calling this since this | |
138 | * function can change the fd value. | |
139 | * | |
140 | * Return 0 on success else a negative value on error. | |
141 | */ | |
142 | int consumer_socket_recv(struct consumer_socket *socket, void *msg, size_t len) | |
143 | { | |
144 | int fd; | |
145 | ssize_t size; | |
146 | ||
a0377dfe FD |
147 | LTTNG_ASSERT(socket); |
148 | LTTNG_ASSERT(socket->fd_ptr); | |
149 | LTTNG_ASSERT(msg); | |
52898cb1 DG |
150 | |
151 | /* Consumer socket is invalid. Stopping. */ | |
9363801e | 152 | fd = *socket->fd_ptr; |
52898cb1 DG |
153 | if (fd < 0) { |
154 | goto error; | |
155 | } | |
156 | ||
157 | size = lttcomm_recv_unix_sock(fd, msg, len); | |
158 | if (size <= 0) { | |
159 | /* The above call will print a PERROR on error. */ | |
160 | DBG("Error when receiving data from the consumer socket %d", fd); | |
161 | /* | |
92db7cdc DG |
162 | * At this point, the socket is not usable anymore thus closing it and |
163 | * setting the file descriptor to -1 so it is not reused. | |
52898cb1 DG |
164 | */ |
165 | ||
166 | /* This call will PERROR on error. */ | |
167 | (void) lttcomm_close_unix_sock(fd); | |
9363801e | 168 | *socket->fd_ptr = -1; |
52898cb1 DG |
169 | goto error; |
170 | } | |
171 | ||
172 | return 0; | |
173 | ||
174 | error: | |
175 | return -1; | |
176 | } | |
177 | ||
f50f23d9 DG |
178 | /* |
179 | * Receive a reply command status message from the consumer. Consumer socket | |
180 | * lock MUST be acquired before calling this function. | |
181 | * | |
182 | * Return 0 on success, -1 on recv error or a negative lttng error code which | |
183 | * was possibly returned by the consumer. | |
184 | */ | |
185 | int consumer_recv_status_reply(struct consumer_socket *sock) | |
186 | { | |
187 | int ret; | |
188 | struct lttcomm_consumer_status_msg reply; | |
189 | ||
a0377dfe | 190 | LTTNG_ASSERT(sock); |
f50f23d9 | 191 | |
52898cb1 DG |
192 | ret = consumer_socket_recv(sock, &reply, sizeof(reply)); |
193 | if (ret < 0) { | |
f50f23d9 DG |
194 | goto end; |
195 | } | |
196 | ||
0c759fc9 | 197 | if (reply.ret_code == LTTCOMM_CONSUMERD_SUCCESS) { |
f50f23d9 DG |
198 | /* All good. */ |
199 | ret = 0; | |
200 | } else { | |
201 | ret = -reply.ret_code; | |
ffe60014 | 202 | DBG("Consumer ret code %d", ret); |
f50f23d9 DG |
203 | } |
204 | ||
205 | end: | |
206 | return ret; | |
207 | } | |
208 | ||
ffe60014 DG |
209 | /* |
210 | * Once the ASK_CHANNEL command is sent to the consumer, the channel | |
211 | * information are sent back. This call receives that data and populates key | |
212 | * and stream_count. | |
213 | * | |
214 | * On success return 0 and both key and stream_count are set. On error, a | |
215 | * negative value is sent back and both parameters are untouched. | |
216 | */ | |
217 | int consumer_recv_status_channel(struct consumer_socket *sock, | |
28ab034a JG |
218 | uint64_t *key, |
219 | unsigned int *stream_count) | |
ffe60014 DG |
220 | { |
221 | int ret; | |
222 | struct lttcomm_consumer_status_channel reply; | |
223 | ||
a0377dfe FD |
224 | LTTNG_ASSERT(sock); |
225 | LTTNG_ASSERT(stream_count); | |
226 | LTTNG_ASSERT(key); | |
ffe60014 | 227 | |
52898cb1 DG |
228 | ret = consumer_socket_recv(sock, &reply, sizeof(reply)); |
229 | if (ret < 0) { | |
ffe60014 DG |
230 | goto end; |
231 | } | |
232 | ||
233 | /* An error is possible so don't touch the key and stream_count. */ | |
0c759fc9 | 234 | if (reply.ret_code != LTTCOMM_CONSUMERD_SUCCESS) { |
ffe60014 DG |
235 | ret = -1; |
236 | goto end; | |
237 | } | |
238 | ||
239 | *key = reply.key; | |
240 | *stream_count = reply.stream_count; | |
0c759fc9 | 241 | ret = 0; |
ffe60014 DG |
242 | |
243 | end: | |
244 | return ret; | |
245 | } | |
246 | ||
2f77fc4b DG |
247 | /* |
248 | * Send destroy relayd command to consumer. | |
249 | * | |
250 | * On success return positive value. On error, negative value. | |
251 | */ | |
28ab034a | 252 | int consumer_send_destroy_relayd(struct consumer_socket *sock, struct consumer_output *consumer) |
2f77fc4b DG |
253 | { |
254 | int ret; | |
255 | struct lttcomm_consumer_msg msg; | |
256 | ||
a0377dfe FD |
257 | LTTNG_ASSERT(consumer); |
258 | LTTNG_ASSERT(sock); | |
2f77fc4b | 259 | |
9363801e | 260 | DBG2("Sending destroy relayd command to consumer sock %d", *sock->fd_ptr); |
2f77fc4b | 261 | |
53efb85a | 262 | memset(&msg, 0, sizeof(msg)); |
2f77fc4b DG |
263 | msg.cmd_type = LTTNG_CONSUMER_DESTROY_RELAYD; |
264 | msg.u.destroy_relayd.net_seq_idx = consumer->net_seq_index; | |
265 | ||
266 | pthread_mutex_lock(sock->lock); | |
52898cb1 | 267 | ret = consumer_socket_send(sock, &msg, sizeof(msg)); |
2f77fc4b | 268 | if (ret < 0) { |
52898cb1 | 269 | goto error; |
2f77fc4b DG |
270 | } |
271 | ||
f50f23d9 DG |
272 | /* Don't check the return value. The caller will do it. */ |
273 | ret = consumer_recv_status_reply(sock); | |
274 | ||
2f77fc4b DG |
275 | DBG2("Consumer send destroy relayd command done"); |
276 | ||
277 | error: | |
52898cb1 | 278 | pthread_mutex_unlock(sock->lock); |
2f77fc4b DG |
279 | return ret; |
280 | } | |
281 | ||
282 | /* | |
283 | * For each consumer socket in the consumer output object, send a destroy | |
284 | * relayd command. | |
285 | */ | |
286 | void consumer_output_send_destroy_relayd(struct consumer_output *consumer) | |
287 | { | |
2f77fc4b DG |
288 | struct lttng_ht_iter iter; |
289 | struct consumer_socket *socket; | |
290 | ||
a0377dfe | 291 | LTTNG_ASSERT(consumer); |
2f77fc4b DG |
292 | |
293 | /* Destroy any relayd connection */ | |
6dc3064a | 294 | if (consumer->type == CONSUMER_DST_NET) { |
56047f5a JG |
295 | lttng::urcu::read_lock_guard read_lock; |
296 | ||
28ab034a | 297 | cds_lfht_for_each_entry (consumer->socks->ht, &iter.iter, socket, node.node) { |
56047f5a JG |
298 | /* Send destroy relayd command. */ |
299 | const int ret = consumer_send_destroy_relayd(socket, consumer); | |
c617c0c6 | 300 | |
2f77fc4b | 301 | if (ret < 0) { |
c5c45efa | 302 | DBG("Unable to send destroy relayd command to consumer"); |
2f77fc4b DG |
303 | /* Continue since we MUST delete everything at this point. */ |
304 | } | |
305 | } | |
2f77fc4b DG |
306 | } |
307 | } | |
308 | ||
a4b92340 DG |
309 | /* |
310 | * From a consumer_data structure, allocate and add a consumer socket to the | |
311 | * consumer output. | |
312 | * | |
313 | * Return 0 on success, else negative value on error | |
314 | */ | |
28ab034a | 315 | int consumer_create_socket(struct consumer_data *data, struct consumer_output *output) |
a4b92340 DG |
316 | { |
317 | int ret = 0; | |
318 | struct consumer_socket *socket; | |
319 | ||
a0377dfe | 320 | LTTNG_ASSERT(data); |
a4b92340 | 321 | |
56047f5a JG |
322 | lttng::urcu::read_lock_guard read_lock; |
323 | ||
cd9adb8b | 324 | if (output == nullptr || data->cmd_sock < 0) { |
a4b92340 DG |
325 | /* |
326 | * Not an error. Possible there is simply not spawned consumer or it's | |
327 | * disabled for the tracing session asking the socket. | |
328 | */ | |
329 | goto error; | |
330 | } | |
331 | ||
a4b92340 | 332 | socket = consumer_find_socket(data->cmd_sock, output); |
cd9adb8b | 333 | if (socket == nullptr) { |
4ce514c4 | 334 | socket = consumer_allocate_socket(&data->cmd_sock); |
cd9adb8b | 335 | if (socket == nullptr) { |
a4b92340 DG |
336 | ret = -1; |
337 | goto error; | |
338 | } | |
339 | ||
2f77fc4b | 340 | socket->registered = 0; |
a4b92340 | 341 | socket->lock = &data->lock; |
a4b92340 | 342 | consumer_add_socket(socket, output); |
a4b92340 DG |
343 | } |
344 | ||
6dc3064a DG |
345 | socket->type = data->type; |
346 | ||
28ab034a | 347 | DBG3("Consumer socket created (fd: %d) and added to output", data->cmd_sock); |
a4b92340 DG |
348 | |
349 | error: | |
350 | return ret; | |
351 | } | |
352 | ||
7972aab2 DG |
353 | /* |
354 | * Return the consumer socket from the given consumer output with the right | |
355 | * bitness. On error, returns NULL. | |
356 | * | |
357 | * The caller MUST acquire a rcu read side lock and keep it until the socket | |
358 | * object reference is not needed anymore. | |
359 | */ | |
360 | struct consumer_socket *consumer_find_socket_by_bitness(int bits, | |
28ab034a | 361 | const struct consumer_output *consumer) |
7972aab2 DG |
362 | { |
363 | int consumer_fd; | |
cd9adb8b | 364 | struct consumer_socket *socket = nullptr; |
7972aab2 | 365 | |
48b7cdc2 FD |
366 | ASSERT_RCU_READ_LOCKED(); |
367 | ||
7972aab2 DG |
368 | switch (bits) { |
369 | case 64: | |
412d7227 | 370 | consumer_fd = uatomic_read(&the_ust_consumerd64_fd); |
7972aab2 DG |
371 | break; |
372 | case 32: | |
412d7227 | 373 | consumer_fd = uatomic_read(&the_ust_consumerd32_fd); |
7972aab2 DG |
374 | break; |
375 | default: | |
a0377dfe | 376 | abort(); |
7972aab2 DG |
377 | goto end; |
378 | } | |
379 | ||
380 | socket = consumer_find_socket(consumer_fd, consumer); | |
381 | if (!socket) { | |
28ab034a | 382 | ERR("Consumer socket fd %d not found in consumer obj %p", consumer_fd, consumer); |
7972aab2 DG |
383 | } |
384 | ||
385 | end: | |
386 | return socket; | |
387 | } | |
388 | ||
173af62f DG |
389 | /* |
390 | * Find a consumer_socket in a consumer_output hashtable. Read side lock must | |
391 | * be acquired before calling this function and across use of the | |
392 | * returned consumer_socket. | |
393 | */ | |
28ab034a | 394 | struct consumer_socket *consumer_find_socket(int key, const struct consumer_output *consumer) |
173af62f DG |
395 | { |
396 | struct lttng_ht_iter iter; | |
397 | struct lttng_ht_node_ulong *node; | |
cd9adb8b | 398 | struct consumer_socket *socket = nullptr; |
173af62f | 399 | |
48b7cdc2 FD |
400 | ASSERT_RCU_READ_LOCKED(); |
401 | ||
173af62f | 402 | /* Negative keys are lookup failures */ |
cd9adb8b JG |
403 | if (key < 0 || consumer == nullptr) { |
404 | return nullptr; | |
173af62f DG |
405 | } |
406 | ||
28ab034a | 407 | lttng_ht_lookup(consumer->socks, (void *) ((unsigned long) key), &iter); |
173af62f | 408 | node = lttng_ht_iter_get_node_ulong(&iter); |
cd9adb8b | 409 | if (node != nullptr) { |
0114db0e | 410 | socket = lttng::utils::container_of(node, &consumer_socket::node); |
173af62f DG |
411 | } |
412 | ||
413 | return socket; | |
414 | } | |
415 | ||
416 | /* | |
417 | * Allocate a new consumer_socket and return the pointer. | |
418 | */ | |
4ce514c4 | 419 | struct consumer_socket *consumer_allocate_socket(int *fd) |
173af62f | 420 | { |
cd9adb8b | 421 | struct consumer_socket *socket = nullptr; |
173af62f | 422 | |
a0377dfe | 423 | LTTNG_ASSERT(fd); |
4ce514c4 | 424 | |
64803277 | 425 | socket = zmalloc<consumer_socket>(); |
cd9adb8b | 426 | if (socket == nullptr) { |
173af62f DG |
427 | PERROR("zmalloc consumer socket"); |
428 | goto error; | |
429 | } | |
430 | ||
9363801e | 431 | socket->fd_ptr = fd; |
4ce514c4 | 432 | lttng_ht_node_init_ulong(&socket->node, *fd); |
173af62f DG |
433 | |
434 | error: | |
435 | return socket; | |
436 | } | |
437 | ||
438 | /* | |
439 | * Add consumer socket to consumer output object. Read side lock must be | |
440 | * acquired before calling this function. | |
441 | */ | |
28ab034a | 442 | void consumer_add_socket(struct consumer_socket *sock, struct consumer_output *consumer) |
173af62f | 443 | { |
a0377dfe FD |
444 | LTTNG_ASSERT(sock); |
445 | LTTNG_ASSERT(consumer); | |
48b7cdc2 | 446 | ASSERT_RCU_READ_LOCKED(); |
173af62f DG |
447 | |
448 | lttng_ht_add_unique_ulong(consumer->socks, &sock->node); | |
449 | } | |
450 | ||
451 | /* | |
348a81dc | 452 | * Delete consumer socket to consumer output object. Read side lock must be |
173af62f DG |
453 | * acquired before calling this function. |
454 | */ | |
28ab034a | 455 | void consumer_del_socket(struct consumer_socket *sock, struct consumer_output *consumer) |
173af62f DG |
456 | { |
457 | int ret; | |
458 | struct lttng_ht_iter iter; | |
459 | ||
a0377dfe FD |
460 | LTTNG_ASSERT(sock); |
461 | LTTNG_ASSERT(consumer); | |
48b7cdc2 | 462 | ASSERT_RCU_READ_LOCKED(); |
173af62f DG |
463 | |
464 | iter.iter.node = &sock->node.node; | |
465 | ret = lttng_ht_del(consumer->socks, &iter); | |
a0377dfe | 466 | LTTNG_ASSERT(!ret); |
173af62f DG |
467 | } |
468 | ||
469 | /* | |
470 | * RCU destroy call function. | |
471 | */ | |
472 | static void destroy_socket_rcu(struct rcu_head *head) | |
473 | { | |
474 | struct lttng_ht_node_ulong *node = | |
0114db0e | 475 | lttng::utils::container_of(head, <tng_ht_node_ulong::head); |
28ab034a | 476 | struct consumer_socket *socket = lttng::utils::container_of(node, &consumer_socket::node); |
173af62f DG |
477 | |
478 | free(socket); | |
479 | } | |
480 | ||
481 | /* | |
48b7cdc2 FD |
482 | * Destroy and free socket pointer in a call RCU. The call must either: |
483 | * - have acquired the read side lock before calling this function, or | |
484 | * - guarantee the validity of the `struct consumer_socket` object for the | |
485 | * duration of the call. | |
173af62f DG |
486 | */ |
487 | void consumer_destroy_socket(struct consumer_socket *sock) | |
488 | { | |
a0377dfe | 489 | LTTNG_ASSERT(sock); |
173af62f DG |
490 | |
491 | /* | |
492 | * We DO NOT close the file descriptor here since it is global to the | |
2f77fc4b DG |
493 | * session daemon and is closed only if the consumer dies or a custom |
494 | * consumer was registered, | |
173af62f | 495 | */ |
2f77fc4b | 496 | if (sock->registered) { |
9363801e DG |
497 | DBG3("Consumer socket was registered. Closing fd %d", *sock->fd_ptr); |
498 | lttcomm_close_unix_sock(*sock->fd_ptr); | |
2f77fc4b | 499 | } |
173af62f DG |
500 | |
501 | call_rcu(&sock->node.head, destroy_socket_rcu); | |
502 | } | |
503 | ||
00e2e675 DG |
504 | /* |
505 | * Allocate and assign data to a consumer_output object. | |
506 | * | |
507 | * Return pointer to structure. | |
508 | */ | |
509 | struct consumer_output *consumer_create_output(enum consumer_dst_type type) | |
510 | { | |
cd9adb8b | 511 | struct consumer_output *output = nullptr; |
00e2e675 | 512 | |
64803277 | 513 | output = zmalloc<consumer_output>(); |
cd9adb8b | 514 | if (output == nullptr) { |
00e2e675 DG |
515 | PERROR("zmalloc consumer_output"); |
516 | goto error; | |
517 | } | |
518 | ||
519 | /* By default, consumer output is enabled */ | |
66cefebd | 520 | output->enabled = true; |
00e2e675 | 521 | output->type = type; |
d88aee68 | 522 | output->net_seq_index = (uint64_t) -1ULL; |
6addfa37 | 523 | urcu_ref_init(&output->ref); |
173af62f DG |
524 | |
525 | output->socks = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG); | |
00e2e675 DG |
526 | |
527 | error: | |
528 | return output; | |
529 | } | |
530 | ||
af706bb7 DG |
531 | /* |
532 | * Iterate over the consumer output socket hash table and destroy them. The | |
533 | * socket file descriptor are only closed if the consumer output was | |
534 | * registered meaning it's an external consumer. | |
535 | */ | |
536 | void consumer_destroy_output_sockets(struct consumer_output *obj) | |
537 | { | |
538 | struct lttng_ht_iter iter; | |
539 | struct consumer_socket *socket; | |
540 | ||
541 | if (!obj->socks) { | |
542 | return; | |
543 | } | |
544 | ||
56047f5a JG |
545 | { |
546 | lttng::urcu::read_lock_guard read_lock; | |
547 | ||
548 | cds_lfht_for_each_entry (obj->socks->ht, &iter.iter, socket, node.node) { | |
549 | consumer_del_socket(socket, obj); | |
550 | consumer_destroy_socket(socket); | |
551 | } | |
af706bb7 | 552 | } |
af706bb7 DG |
553 | } |
554 | ||
00e2e675 DG |
555 | /* |
556 | * Delete the consumer_output object from the list and free the ptr. | |
557 | */ | |
6addfa37 | 558 | static void consumer_release_output(struct urcu_ref *ref) |
00e2e675 | 559 | { |
28ab034a | 560 | struct consumer_output *obj = lttng::utils::container_of(ref, &consumer_output::ref); |
00e2e675 | 561 | |
af706bb7 | 562 | consumer_destroy_output_sockets(obj); |
2f77fc4b | 563 | |
af706bb7 | 564 | if (obj->socks) { |
2f77fc4b | 565 | /* Finally destroy HT */ |
3c339053 | 566 | lttng_ht_destroy(obj->socks); |
00e2e675 | 567 | } |
173af62f | 568 | |
00e2e675 DG |
569 | free(obj); |
570 | } | |
571 | ||
6addfa37 MD |
572 | /* |
573 | * Get the consumer_output object. | |
574 | */ | |
575 | void consumer_output_get(struct consumer_output *obj) | |
576 | { | |
577 | urcu_ref_get(&obj->ref); | |
578 | } | |
579 | ||
580 | /* | |
581 | * Put the consumer_output object. | |
6addfa37 MD |
582 | */ |
583 | void consumer_output_put(struct consumer_output *obj) | |
584 | { | |
585 | if (!obj) { | |
586 | return; | |
587 | } | |
588 | urcu_ref_put(&obj->ref, consumer_release_output); | |
589 | } | |
590 | ||
00e2e675 DG |
591 | /* |
592 | * Copy consumer output and returned the newly allocated copy. | |
593 | */ | |
b178f53e | 594 | struct consumer_output *consumer_copy_output(struct consumer_output *src) |
00e2e675 | 595 | { |
6dc3064a | 596 | int ret; |
00e2e675 DG |
597 | struct consumer_output *output; |
598 | ||
a0377dfe | 599 | LTTNG_ASSERT(src); |
00e2e675 | 600 | |
b178f53e | 601 | output = consumer_create_output(src->type); |
cd9adb8b | 602 | if (output == nullptr) { |
6addfa37 | 603 | goto end; |
00e2e675 | 604 | } |
b178f53e JG |
605 | output->enabled = src->enabled; |
606 | output->net_seq_index = src->net_seq_index; | |
28ab034a | 607 | memcpy(output->domain_subdir, src->domain_subdir, sizeof(output->domain_subdir)); |
b178f53e JG |
608 | output->snapshot = src->snapshot; |
609 | output->relay_major_version = src->relay_major_version; | |
610 | output->relay_minor_version = src->relay_minor_version; | |
eacb7b6f | 611 | output->relay_allows_clear = src->relay_allows_clear; |
b178f53e JG |
612 | memcpy(&output->dst, &src->dst, sizeof(output->dst)); |
613 | ret = consumer_copy_sockets(output, src); | |
6dc3064a | 614 | if (ret < 0) { |
6addfa37 | 615 | goto error_put; |
6dc3064a | 616 | } |
6addfa37 | 617 | end: |
6dc3064a DG |
618 | return output; |
619 | ||
6addfa37 MD |
620 | error_put: |
621 | consumer_output_put(output); | |
cd9adb8b | 622 | return nullptr; |
6dc3064a DG |
623 | } |
624 | ||
625 | /* | |
626 | * Copy consumer sockets from src to dst. | |
627 | * | |
628 | * Return 0 on success or else a negative value. | |
629 | */ | |
28ab034a | 630 | int consumer_copy_sockets(struct consumer_output *dst, struct consumer_output *src) |
6dc3064a DG |
631 | { |
632 | int ret = 0; | |
633 | struct lttng_ht_iter iter; | |
634 | struct consumer_socket *socket, *copy_sock; | |
635 | ||
a0377dfe FD |
636 | LTTNG_ASSERT(dst); |
637 | LTTNG_ASSERT(src); | |
6dc3064a | 638 | |
56047f5a JG |
639 | { |
640 | lttng::urcu::read_lock_guard read_lock; | |
6dc3064a | 641 | |
56047f5a JG |
642 | cds_lfht_for_each_entry (src->socks->ht, &iter.iter, socket, node.node) { |
643 | /* Ignore socket that are already there. */ | |
644 | copy_sock = consumer_find_socket(*socket->fd_ptr, dst); | |
645 | if (copy_sock) { | |
646 | continue; | |
647 | } | |
173af62f | 648 | |
56047f5a JG |
649 | /* Create new socket object. */ |
650 | copy_sock = consumer_allocate_socket(socket->fd_ptr); | |
651 | if (copy_sock == nullptr) { | |
652 | ret = -ENOMEM; | |
653 | goto error; | |
654 | } | |
655 | ||
656 | copy_sock->registered = socket->registered; | |
657 | /* | |
658 | * This is valid because this lock is shared accross all consumer | |
659 | * object being the global lock of the consumer data structure of the | |
660 | * session daemon. | |
661 | */ | |
662 | copy_sock->lock = socket->lock; | |
663 | consumer_add_socket(copy_sock, dst); | |
664 | } | |
173af62f DG |
665 | } |
666 | ||
00e2e675 | 667 | error: |
6dc3064a | 668 | return ret; |
00e2e675 DG |
669 | } |
670 | ||
671 | /* | |
b178f53e | 672 | * Set network URI to the consumer output. |
00e2e675 | 673 | * |
ad20f474 DG |
674 | * Return 0 on success. Return 1 if the URI were equal. Else, negative value on |
675 | * error. | |
00e2e675 | 676 | */ |
b178f53e | 677 | int consumer_set_network_uri(const struct ltt_session *session, |
28ab034a JG |
678 | struct consumer_output *output, |
679 | struct lttng_uri *uri) | |
00e2e675 DG |
680 | { |
681 | int ret; | |
cd9adb8b | 682 | struct lttng_uri *dst_uri = nullptr; |
00e2e675 DG |
683 | |
684 | /* Code flow error safety net. */ | |
a0377dfe FD |
685 | LTTNG_ASSERT(output); |
686 | LTTNG_ASSERT(uri); | |
00e2e675 DG |
687 | |
688 | switch (uri->stype) { | |
689 | case LTTNG_STREAM_CONTROL: | |
b178f53e JG |
690 | dst_uri = &output->dst.net.control; |
691 | output->dst.net.control_isset = 1; | |
00e2e675 DG |
692 | if (uri->port == 0) { |
693 | /* Assign default port. */ | |
694 | uri->port = DEFAULT_NETWORK_CONTROL_PORT; | |
a74934ba | 695 | } else { |
28ab034a | 696 | if (output->dst.net.data_isset && uri->port == output->dst.net.data.port) { |
a74934ba DG |
697 | ret = -LTTNG_ERR_INVALID; |
698 | goto error; | |
699 | } | |
00e2e675 | 700 | } |
ad20f474 | 701 | DBG3("Consumer control URI set with port %d", uri->port); |
00e2e675 DG |
702 | break; |
703 | case LTTNG_STREAM_DATA: | |
b178f53e JG |
704 | dst_uri = &output->dst.net.data; |
705 | output->dst.net.data_isset = 1; | |
00e2e675 DG |
706 | if (uri->port == 0) { |
707 | /* Assign default port. */ | |
708 | uri->port = DEFAULT_NETWORK_DATA_PORT; | |
a74934ba | 709 | } else { |
28ab034a JG |
710 | if (output->dst.net.control_isset && |
711 | uri->port == output->dst.net.control.port) { | |
a74934ba DG |
712 | ret = -LTTNG_ERR_INVALID; |
713 | goto error; | |
714 | } | |
00e2e675 | 715 | } |
ad20f474 | 716 | DBG3("Consumer data URI set with port %d", uri->port); |
00e2e675 DG |
717 | break; |
718 | default: | |
719 | ERR("Set network uri type unknown %d", uri->stype); | |
a74934ba | 720 | ret = -LTTNG_ERR_INVALID; |
00e2e675 DG |
721 | goto error; |
722 | } | |
723 | ||
724 | ret = uri_compare(dst_uri, uri); | |
725 | if (!ret) { | |
726 | /* Same URI, don't touch it and return success. */ | |
727 | DBG3("URI network compare are the same"); | |
ad20f474 | 728 | goto equal; |
00e2e675 DG |
729 | } |
730 | ||
731 | /* URIs were not equal, replacing it. */ | |
00e2e675 | 732 | memcpy(dst_uri, uri, sizeof(struct lttng_uri)); |
b178f53e JG |
733 | output->type = CONSUMER_DST_NET; |
734 | if (dst_uri->stype != LTTNG_STREAM_CONTROL) { | |
735 | /* Only the control uri needs to contain the path. */ | |
736 | goto end; | |
737 | } | |
00e2e675 | 738 | |
b178f53e JG |
739 | /* |
740 | * If the user has specified a subdir as part of the control | |
741 | * URL, the session's base output directory is: | |
742 | * /RELAYD_OUTPUT_PATH/HOSTNAME/USER_SPECIFIED_DIR | |
743 | * | |
744 | * Hence, the "base_dir" from which all stream files and | |
745 | * session rotation chunks are created takes the form | |
746 | * /HOSTNAME/USER_SPECIFIED_DIR | |
747 | * | |
748 | * If the user has not specified an output directory as part of | |
749 | * the control URL, the base output directory has the form: | |
750 | * /RELAYD_OUTPUT_PATH/HOSTNAME/SESSION_NAME-CREATION_TIME | |
751 | * | |
752 | * Hence, the "base_dir" from which all stream files and | |
753 | * session rotation chunks are created takes the form | |
754 | * /HOSTNAME/SESSION_NAME-CREATION_TIME | |
755 | * | |
756 | * Note that automatically generated session names already | |
757 | * contain the session's creation time. In that case, the | |
758 | * creation time is omitted to prevent it from being duplicated | |
759 | * in the final directory hierarchy. | |
760 | */ | |
761 | if (*uri->subdir) { | |
762 | if (strstr(uri->subdir, "../")) { | |
763 | ERR("Network URI subdirs are not allowed to walk up the path hierarchy"); | |
764 | ret = -LTTNG_ERR_INVALID; | |
00e2e675 DG |
765 | goto error; |
766 | } | |
b178f53e | 767 | ret = snprintf(output->dst.net.base_dir, |
28ab034a JG |
768 | sizeof(output->dst.net.base_dir), |
769 | "/%s/%s/", | |
770 | session->hostname, | |
771 | uri->subdir); | |
b178f53e JG |
772 | } else { |
773 | if (session->has_auto_generated_name) { | |
774 | ret = snprintf(output->dst.net.base_dir, | |
28ab034a JG |
775 | sizeof(output->dst.net.base_dir), |
776 | "/%s/%s/", | |
777 | session->hostname, | |
778 | session->name); | |
b178f53e JG |
779 | } else { |
780 | char session_creation_datetime[16]; | |
781 | size_t strftime_ret; | |
782 | struct tm *timeinfo; | |
00e2e675 | 783 | |
b178f53e JG |
784 | timeinfo = localtime(&session->creation_time); |
785 | if (!timeinfo) { | |
786 | ret = -LTTNG_ERR_FATAL; | |
787 | goto error; | |
788 | } | |
789 | strftime_ret = strftime(session_creation_datetime, | |
28ab034a JG |
790 | sizeof(session_creation_datetime), |
791 | "%Y%m%d-%H%M%S", | |
792 | timeinfo); | |
b178f53e JG |
793 | if (strftime_ret == 0) { |
794 | ERR("Failed to format session creation timestamp while setting network URI"); | |
795 | ret = -LTTNG_ERR_FATAL; | |
796 | goto error; | |
797 | } | |
798 | ret = snprintf(output->dst.net.base_dir, | |
28ab034a JG |
799 | sizeof(output->dst.net.base_dir), |
800 | "/%s/%s-%s/", | |
801 | session->hostname, | |
802 | session->name, | |
803 | session_creation_datetime); | |
bfc6eff0 | 804 | } |
00e2e675 | 805 | } |
b178f53e JG |
806 | if (ret >= sizeof(output->dst.net.base_dir)) { |
807 | ret = -LTTNG_ERR_INVALID; | |
808 | ERR("Truncation occurred while setting network output base directory"); | |
809 | goto error; | |
810 | } else if (ret == -1) { | |
811 | ret = -LTTNG_ERR_INVALID; | |
812 | PERROR("Error occurred while setting network output base directory"); | |
813 | goto error; | |
814 | } | |
815 | ||
28ab034a | 816 | DBG3("Consumer set network uri base_dir path %s", output->dst.net.base_dir); |
00e2e675 | 817 | |
b178f53e | 818 | end: |
00e2e675 | 819 | return 0; |
ad20f474 DG |
820 | equal: |
821 | return 1; | |
00e2e675 | 822 | error: |
a74934ba | 823 | return ret; |
00e2e675 DG |
824 | } |
825 | ||
826 | /* | |
827 | * Send file descriptor to consumer via sock. | |
9a318688 JG |
828 | * |
829 | * The consumer socket lock must be held by the caller. | |
00e2e675 | 830 | */ |
28ab034a | 831 | int consumer_send_fds(struct consumer_socket *sock, const int *fds, size_t nb_fd) |
00e2e675 DG |
832 | { |
833 | int ret; | |
834 | ||
a0377dfe FD |
835 | LTTNG_ASSERT(fds); |
836 | LTTNG_ASSERT(sock); | |
837 | LTTNG_ASSERT(nb_fd > 0); | |
838 | LTTNG_ASSERT(pthread_mutex_trylock(sock->lock) == EBUSY); | |
00e2e675 | 839 | |
9363801e | 840 | ret = lttcomm_send_fds_unix_sock(*sock->fd_ptr, fds, nb_fd); |
00e2e675 | 841 | if (ret < 0) { |
3448e266 | 842 | /* The above call will print a PERROR on error. */ |
9363801e | 843 | DBG("Error when sending consumer fds on sock %d", *sock->fd_ptr); |
00e2e675 DG |
844 | goto error; |
845 | } | |
846 | ||
f50f23d9 | 847 | ret = consumer_recv_status_reply(sock); |
00e2e675 DG |
848 | error: |
849 | return ret; | |
850 | } | |
851 | ||
ffe60014 DG |
852 | /* |
853 | * Consumer send communication message structure to consumer. | |
9a318688 JG |
854 | * |
855 | * The consumer socket lock must be held by the caller. | |
ffe60014 | 856 | */ |
28ab034a | 857 | int consumer_send_msg(struct consumer_socket *sock, const struct lttcomm_consumer_msg *msg) |
ffe60014 DG |
858 | { |
859 | int ret; | |
860 | ||
a0377dfe FD |
861 | LTTNG_ASSERT(msg); |
862 | LTTNG_ASSERT(sock); | |
863 | LTTNG_ASSERT(pthread_mutex_trylock(sock->lock) == EBUSY); | |
ffe60014 | 864 | |
52898cb1 | 865 | ret = consumer_socket_send(sock, msg, sizeof(struct lttcomm_consumer_msg)); |
ffe60014 | 866 | if (ret < 0) { |
ffe60014 DG |
867 | goto error; |
868 | } | |
869 | ||
870 | ret = consumer_recv_status_reply(sock); | |
871 | ||
872 | error: | |
873 | return ret; | |
874 | } | |
875 | ||
00e2e675 DG |
876 | /* |
877 | * Consumer send channel communication message structure to consumer. | |
9a318688 JG |
878 | * |
879 | * The consumer socket lock must be held by the caller. | |
00e2e675 | 880 | */ |
28ab034a | 881 | int consumer_send_channel(struct consumer_socket *sock, struct lttcomm_consumer_msg *msg) |
00e2e675 DG |
882 | { |
883 | int ret; | |
884 | ||
a0377dfe FD |
885 | LTTNG_ASSERT(msg); |
886 | LTTNG_ASSERT(sock); | |
00e2e675 | 887 | |
52898cb1 | 888 | ret = consumer_send_msg(sock, msg); |
00e2e675 | 889 | if (ret < 0) { |
00e2e675 DG |
890 | goto error; |
891 | } | |
892 | ||
893 | error: | |
894 | return ret; | |
895 | } | |
896 | ||
ffe60014 DG |
897 | /* |
898 | * Populate the given consumer msg structure with the ask_channel command | |
899 | * information. | |
900 | */ | |
901 | void consumer_init_ask_channel_comm_msg(struct lttcomm_consumer_msg *msg, | |
28ab034a JG |
902 | uint64_t subbuf_size, |
903 | uint64_t num_subbuf, | |
904 | int overwrite, | |
905 | unsigned int switch_timer_interval, | |
906 | unsigned int read_timer_interval, | |
907 | unsigned int live_timer_interval, | |
908 | bool is_in_live_session, | |
909 | unsigned int monitor_timer_interval, | |
910 | int output, | |
911 | int type, | |
912 | uint64_t session_id, | |
913 | const char *pathname, | |
914 | const char *name, | |
915 | uint64_t relayd_id, | |
916 | uint64_t key, | |
917 | const lttng_uuid& uuid, | |
918 | uint32_t chan_id, | |
919 | uint64_t tracefile_size, | |
920 | uint64_t tracefile_count, | |
921 | uint64_t session_id_per_pid, | |
922 | unsigned int monitor, | |
923 | uint32_t ust_app_uid, | |
924 | int64_t blocking_timeout, | |
925 | const char *root_shm_path, | |
926 | const char *shm_path, | |
927 | struct lttng_trace_chunk *trace_chunk, | |
928 | const struct lttng_credentials *buffer_credentials) | |
ffe60014 | 929 | { |
a0377dfe | 930 | LTTNG_ASSERT(msg); |
ffe60014 | 931 | |
26c468bb | 932 | /* Zeroed structure */ |
ffe60014 | 933 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); |
d2956687 JG |
934 | msg->u.ask_channel.buffer_credentials.uid = UINT32_MAX; |
935 | msg->u.ask_channel.buffer_credentials.gid = UINT32_MAX; | |
936 | ||
26c468bb | 937 | if (trace_chunk) { |
d2956687 JG |
938 | uint64_t chunk_id; |
939 | enum lttng_trace_chunk_status chunk_status; | |
d2956687 JG |
940 | |
941 | chunk_status = lttng_trace_chunk_get_id(trace_chunk, &chunk_id); | |
a0377dfe | 942 | LTTNG_ASSERT(chunk_status == LTTNG_TRACE_CHUNK_STATUS_OK); |
d2956687 | 943 | LTTNG_OPTIONAL_SET(&msg->u.ask_channel.chunk_id, chunk_id); |
26c468bb | 944 | } |
28ab034a JG |
945 | msg->u.ask_channel.buffer_credentials.uid = lttng_credentials_get_uid(buffer_credentials); |
946 | msg->u.ask_channel.buffer_credentials.gid = lttng_credentials_get_gid(buffer_credentials); | |
ffe60014 DG |
947 | |
948 | msg->cmd_type = LTTNG_CONSUMER_ASK_CHANNEL_CREATION; | |
949 | msg->u.ask_channel.subbuf_size = subbuf_size; | |
28ab034a | 950 | msg->u.ask_channel.num_subbuf = num_subbuf; |
ffe60014 DG |
951 | msg->u.ask_channel.overwrite = overwrite; |
952 | msg->u.ask_channel.switch_timer_interval = switch_timer_interval; | |
953 | msg->u.ask_channel.read_timer_interval = read_timer_interval; | |
ecc48a90 | 954 | msg->u.ask_channel.live_timer_interval = live_timer_interval; |
a2814ea7 | 955 | msg->u.ask_channel.is_live = is_in_live_session; |
e9404c27 | 956 | msg->u.ask_channel.monitor_timer_interval = monitor_timer_interval; |
ffe60014 DG |
957 | msg->u.ask_channel.output = output; |
958 | msg->u.ask_channel.type = type; | |
959 | msg->u.ask_channel.session_id = session_id; | |
1950109e | 960 | msg->u.ask_channel.session_id_per_pid = session_id_per_pid; |
ffe60014 DG |
961 | msg->u.ask_channel.relayd_id = relayd_id; |
962 | msg->u.ask_channel.key = key; | |
7972aab2 | 963 | msg->u.ask_channel.chan_id = chan_id; |
1624d5b7 JD |
964 | msg->u.ask_channel.tracefile_size = tracefile_size; |
965 | msg->u.ask_channel.tracefile_count = tracefile_count; | |
2bba9e53 | 966 | msg->u.ask_channel.monitor = monitor; |
567eb353 | 967 | msg->u.ask_channel.ust_app_uid = ust_app_uid; |
491d1539 | 968 | msg->u.ask_channel.blocking_timeout = blocking_timeout; |
ffe60014 | 969 | |
328c2fe7 | 970 | std::copy(uuid.begin(), uuid.end(), msg->u.ask_channel.uuid); |
ffe60014 | 971 | |
10a50311 | 972 | if (pathname) { |
28ab034a JG |
973 | strncpy(msg->u.ask_channel.pathname, pathname, sizeof(msg->u.ask_channel.pathname)); |
974 | msg->u.ask_channel.pathname[sizeof(msg->u.ask_channel.pathname) - 1] = '\0'; | |
10a50311 | 975 | } |
ffe60014 DG |
976 | |
977 | strncpy(msg->u.ask_channel.name, name, sizeof(msg->u.ask_channel.name)); | |
978 | msg->u.ask_channel.name[sizeof(msg->u.ask_channel.name) - 1] = '\0'; | |
d7ba1388 | 979 | |
3d071855 | 980 | if (root_shm_path) { |
28ab034a JG |
981 | strncpy(msg->u.ask_channel.root_shm_path, |
982 | root_shm_path, | |
3d071855 | 983 | sizeof(msg->u.ask_channel.root_shm_path)); |
28ab034a JG |
984 | msg->u.ask_channel.root_shm_path[sizeof(msg->u.ask_channel.root_shm_path) - 1] = |
985 | '\0'; | |
3d071855 | 986 | } |
d7ba1388 | 987 | if (shm_path) { |
28ab034a | 988 | strncpy(msg->u.ask_channel.shm_path, shm_path, sizeof(msg->u.ask_channel.shm_path)); |
d7ba1388 MD |
989 | msg->u.ask_channel.shm_path[sizeof(msg->u.ask_channel.shm_path) - 1] = '\0'; |
990 | } | |
ffe60014 DG |
991 | } |
992 | ||
00e2e675 DG |
993 | /* |
994 | * Init channel communication message structure. | |
995 | */ | |
638e7b4e | 996 | void consumer_init_add_channel_comm_msg(struct lttcomm_consumer_msg *msg, |
28ab034a JG |
997 | uint64_t channel_key, |
998 | uint64_t session_id, | |
999 | const char *pathname, | |
1000 | uint64_t relayd_id, | |
1001 | const char *name, | |
1002 | unsigned int nb_init_streams, | |
1003 | enum lttng_event_output output, | |
1004 | int type, | |
1005 | uint64_t tracefile_size, | |
1006 | uint64_t tracefile_count, | |
1007 | unsigned int monitor, | |
1008 | unsigned int live_timer_interval, | |
1009 | bool is_in_live_session, | |
1010 | unsigned int monitor_timer_interval, | |
1011 | struct lttng_trace_chunk *trace_chunk) | |
00e2e675 | 1012 | { |
a0377dfe | 1013 | LTTNG_ASSERT(msg); |
00e2e675 | 1014 | |
00e2e675 DG |
1015 | /* Zeroed structure */ |
1016 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
1017 | ||
26c468bb | 1018 | if (trace_chunk) { |
d2956687 JG |
1019 | uint64_t chunk_id; |
1020 | enum lttng_trace_chunk_status chunk_status; | |
1021 | ||
1022 | chunk_status = lttng_trace_chunk_get_id(trace_chunk, &chunk_id); | |
a0377dfe | 1023 | LTTNG_ASSERT(chunk_status == LTTNG_TRACE_CHUNK_STATUS_OK); |
d2956687 | 1024 | LTTNG_OPTIONAL_SET(&msg->u.channel.chunk_id, chunk_id); |
26c468bb | 1025 | } |
d2956687 | 1026 | |
00e2e675 | 1027 | /* Send channel */ |
638e7b4e | 1028 | msg->cmd_type = LTTNG_CONSUMER_ADD_CHANNEL; |
00e2e675 | 1029 | msg->u.channel.channel_key = channel_key; |
ffe60014 | 1030 | msg->u.channel.session_id = session_id; |
ffe60014 | 1031 | msg->u.channel.relayd_id = relayd_id; |
c30aaa51 | 1032 | msg->u.channel.nb_init_streams = nb_init_streams; |
ffe60014 DG |
1033 | msg->u.channel.output = output; |
1034 | msg->u.channel.type = type; | |
1624d5b7 JD |
1035 | msg->u.channel.tracefile_size = tracefile_size; |
1036 | msg->u.channel.tracefile_count = tracefile_count; | |
2bba9e53 | 1037 | msg->u.channel.monitor = monitor; |
ecc48a90 | 1038 | msg->u.channel.live_timer_interval = live_timer_interval; |
a2814ea7 | 1039 | msg->u.channel.is_live = is_in_live_session; |
e9404c27 | 1040 | msg->u.channel.monitor_timer_interval = monitor_timer_interval; |
ffe60014 | 1041 | |
28ab034a | 1042 | strncpy(msg->u.channel.pathname, pathname, sizeof(msg->u.channel.pathname)); |
ffe60014 DG |
1043 | msg->u.channel.pathname[sizeof(msg->u.channel.pathname) - 1] = '\0'; |
1044 | ||
1045 | strncpy(msg->u.channel.name, name, sizeof(msg->u.channel.name)); | |
1046 | msg->u.channel.name[sizeof(msg->u.channel.name) - 1] = '\0'; | |
00e2e675 DG |
1047 | } |
1048 | ||
1049 | /* | |
1050 | * Init stream communication message structure. | |
1051 | */ | |
e098433c | 1052 | void consumer_init_add_stream_comm_msg(struct lttcomm_consumer_msg *msg, |
28ab034a JG |
1053 | uint64_t channel_key, |
1054 | uint64_t stream_key, | |
1055 | int32_t cpu) | |
00e2e675 | 1056 | { |
a0377dfe | 1057 | LTTNG_ASSERT(msg); |
00e2e675 DG |
1058 | |
1059 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
1060 | ||
e098433c | 1061 | msg->cmd_type = LTTNG_CONSUMER_ADD_STREAM; |
00e2e675 DG |
1062 | msg->u.stream.channel_key = channel_key; |
1063 | msg->u.stream.stream_key = stream_key; | |
ffe60014 | 1064 | msg->u.stream.cpu = cpu; |
00e2e675 DG |
1065 | } |
1066 | ||
a4baae1b | 1067 | void consumer_init_streams_sent_comm_msg(struct lttcomm_consumer_msg *msg, |
28ab034a JG |
1068 | enum lttng_consumer_command cmd, |
1069 | uint64_t channel_key, | |
1070 | uint64_t net_seq_idx) | |
a4baae1b | 1071 | { |
a0377dfe | 1072 | LTTNG_ASSERT(msg); |
a4baae1b JD |
1073 | |
1074 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
1075 | ||
1076 | msg->cmd_type = cmd; | |
1077 | msg->u.sent_streams.channel_key = channel_key; | |
1078 | msg->u.sent_streams.net_seq_idx = net_seq_idx; | |
1079 | } | |
1080 | ||
00e2e675 DG |
1081 | /* |
1082 | * Send stream communication structure to the consumer. | |
1083 | */ | |
f50f23d9 | 1084 | int consumer_send_stream(struct consumer_socket *sock, |
28ab034a JG |
1085 | struct consumer_output *dst, |
1086 | struct lttcomm_consumer_msg *msg, | |
1087 | const int *fds, | |
1088 | size_t nb_fd) | |
00e2e675 DG |
1089 | { |
1090 | int ret; | |
1091 | ||
a0377dfe FD |
1092 | LTTNG_ASSERT(msg); |
1093 | LTTNG_ASSERT(dst); | |
1094 | LTTNG_ASSERT(sock); | |
1095 | LTTNG_ASSERT(fds); | |
00e2e675 | 1096 | |
52898cb1 | 1097 | ret = consumer_send_msg(sock, msg); |
f50f23d9 DG |
1098 | if (ret < 0) { |
1099 | goto error; | |
1100 | } | |
1101 | ||
00e2e675 DG |
1102 | ret = consumer_send_fds(sock, fds, nb_fd); |
1103 | if (ret < 0) { | |
1104 | goto error; | |
1105 | } | |
1106 | ||
1107 | error: | |
1108 | return ret; | |
1109 | } | |
37278a1e DG |
1110 | |
1111 | /* | |
1112 | * Send relayd socket to consumer associated with a session name. | |
1113 | * | |
43fade62 JG |
1114 | * The consumer socket lock must be held by the caller. |
1115 | * | |
37278a1e DG |
1116 | * On success return positive value. On error, negative value. |
1117 | */ | |
f50f23d9 | 1118 | int consumer_send_relayd_socket(struct consumer_socket *consumer_sock, |
28ab034a JG |
1119 | struct lttcomm_relayd_sock *rsock, |
1120 | struct consumer_output *consumer, | |
1121 | enum lttng_stream_type type, | |
1122 | uint64_t session_id, | |
1123 | const char *session_name, | |
1124 | const char *hostname, | |
1125 | const char *base_path, | |
1126 | int session_live_timer, | |
1127 | const uint64_t *current_chunk_id, | |
1128 | time_t session_creation_time, | |
1129 | bool session_name_contains_creation_time) | |
37278a1e DG |
1130 | { |
1131 | int ret; | |
7966af57 | 1132 | int fd; |
37278a1e DG |
1133 | struct lttcomm_consumer_msg msg; |
1134 | ||
1135 | /* Code flow error. Safety net. */ | |
a0377dfe FD |
1136 | LTTNG_ASSERT(rsock); |
1137 | LTTNG_ASSERT(consumer); | |
1138 | LTTNG_ASSERT(consumer_sock); | |
37278a1e | 1139 | |
53efb85a | 1140 | memset(&msg, 0, sizeof(msg)); |
37278a1e DG |
1141 | /* Bail out if consumer is disabled */ |
1142 | if (!consumer->enabled) { | |
f73fabfd | 1143 | ret = LTTNG_OK; |
37278a1e DG |
1144 | goto error; |
1145 | } | |
1146 | ||
d3e2ba59 | 1147 | if (type == LTTNG_STREAM_CONTROL) { |
ecd1a12f | 1148 | char output_path[LTTNG_PATH_MAX] = {}; |
07aa2e42 | 1149 | uint64_t relayd_session_id; |
ecd1a12f | 1150 | |
28ab034a JG |
1151 | ret = relayd_create_session(rsock, |
1152 | &relayd_session_id, | |
1153 | session_name, | |
1154 | hostname, | |
1155 | base_path, | |
1156 | session_live_timer, | |
1157 | consumer->snapshot, | |
1158 | session_id, | |
1159 | the_sessiond_uuid, | |
1160 | current_chunk_id, | |
1161 | session_creation_time, | |
1162 | session_name_contains_creation_time, | |
1163 | output_path); | |
d3e2ba59 JD |
1164 | if (ret < 0) { |
1165 | /* Close the control socket. */ | |
1166 | (void) relayd_close(rsock); | |
1167 | goto error; | |
1168 | } | |
07aa2e42 | 1169 | msg.u.relayd_sock.relayd_session_id = relayd_session_id; |
28ab034a | 1170 | DBG("Created session on relay, output path reply: %s", output_path); |
d3e2ba59 JD |
1171 | } |
1172 | ||
37278a1e DG |
1173 | msg.cmd_type = LTTNG_CONSUMER_ADD_RELAYD_SOCKET; |
1174 | /* | |
1175 | * Assign network consumer output index using the temporary consumer since | |
1176 | * this call should only be made from within a set_consumer_uri() function | |
1177 | * call in the session daemon. | |
1178 | */ | |
1179 | msg.u.relayd_sock.net_index = consumer->net_seq_index; | |
1180 | msg.u.relayd_sock.type = type; | |
46e6455f | 1181 | msg.u.relayd_sock.session_id = session_id; |
4222116f JR |
1182 | msg.u.relayd_sock.major = rsock->major; |
1183 | msg.u.relayd_sock.minor = rsock->minor; | |
1184 | msg.u.relayd_sock.relayd_socket_protocol = rsock->sock.proto; | |
37278a1e | 1185 | |
9363801e | 1186 | DBG3("Sending relayd sock info to consumer on %d", *consumer_sock->fd_ptr); |
52898cb1 | 1187 | ret = consumer_send_msg(consumer_sock, &msg); |
f50f23d9 DG |
1188 | if (ret < 0) { |
1189 | goto error; | |
1190 | } | |
1191 | ||
37278a1e | 1192 | DBG3("Sending relayd socket file descriptor to consumer"); |
7966af57 SM |
1193 | fd = rsock->sock.fd; |
1194 | ret = consumer_send_fds(consumer_sock, &fd, 1); | |
37278a1e DG |
1195 | if (ret < 0) { |
1196 | goto error; | |
1197 | } | |
1198 | ||
1199 | DBG2("Consumer relayd socket sent"); | |
1200 | ||
1201 | error: | |
1202 | return ret; | |
1203 | } | |
173af62f | 1204 | |
28ab034a JG |
1205 | static int |
1206 | consumer_send_pipe(struct consumer_socket *consumer_sock, enum lttng_consumer_command cmd, int pipe) | |
e9404c27 JG |
1207 | { |
1208 | int ret; | |
1209 | struct lttcomm_consumer_msg msg; | |
62c43103 JD |
1210 | const char *pipe_name; |
1211 | const char *command_name; | |
1212 | ||
1213 | switch (cmd) { | |
1214 | case LTTNG_CONSUMER_SET_CHANNEL_MONITOR_PIPE: | |
1215 | pipe_name = "channel monitor"; | |
1216 | command_name = "SET_CHANNEL_MONITOR_PIPE"; | |
1217 | break; | |
62c43103 | 1218 | default: |
28ab034a | 1219 | ERR("Unexpected command received in %s (cmd = %d)", __func__, (int) cmd); |
62c43103 JD |
1220 | abort(); |
1221 | } | |
e9404c27 JG |
1222 | |
1223 | /* Code flow error. Safety net. */ | |
1224 | ||
1225 | memset(&msg, 0, sizeof(msg)); | |
62c43103 | 1226 | msg.cmd_type = cmd; |
e9404c27 | 1227 | |
3e4dc117 | 1228 | pthread_mutex_lock(consumer_sock->lock); |
62c43103 | 1229 | DBG3("Sending %s command to consumer", command_name); |
e9404c27 JG |
1230 | ret = consumer_send_msg(consumer_sock, &msg); |
1231 | if (ret < 0) { | |
1232 | goto error; | |
1233 | } | |
1234 | ||
28ab034a | 1235 | DBG3("Sending %s pipe %d to consumer on socket %d", pipe_name, pipe, *consumer_sock->fd_ptr); |
e9404c27 JG |
1236 | ret = consumer_send_fds(consumer_sock, &pipe, 1); |
1237 | if (ret < 0) { | |
1238 | goto error; | |
1239 | } | |
1240 | ||
62c43103 | 1241 | DBG2("%s pipe successfully sent", pipe_name); |
e9404c27 | 1242 | error: |
3e4dc117 | 1243 | pthread_mutex_unlock(consumer_sock->lock); |
e9404c27 JG |
1244 | return ret; |
1245 | } | |
1246 | ||
28ab034a | 1247 | int consumer_send_channel_monitor_pipe(struct consumer_socket *consumer_sock, int pipe) |
62c43103 | 1248 | { |
28ab034a | 1249 | return consumer_send_pipe(consumer_sock, LTTNG_CONSUMER_SET_CHANNEL_MONITOR_PIPE, pipe); |
62c43103 JD |
1250 | } |
1251 | ||
806e2684 | 1252 | /* |
5e280d77 MD |
1253 | * Ask the consumer if the data is pending for the specific session id. |
1254 | * Returns 1 if data is pending, 0 otherwise, or < 0 on error. | |
806e2684 | 1255 | */ |
28ab034a | 1256 | int consumer_is_data_pending(uint64_t session_id, struct consumer_output *consumer) |
806e2684 DG |
1257 | { |
1258 | int ret; | |
28ab034a | 1259 | int32_t ret_code = 0; /* Default is that the data is NOT pending */ |
806e2684 DG |
1260 | struct consumer_socket *socket; |
1261 | struct lttng_ht_iter iter; | |
1262 | struct lttcomm_consumer_msg msg; | |
1263 | ||
a0377dfe | 1264 | LTTNG_ASSERT(consumer); |
806e2684 | 1265 | |
53efb85a | 1266 | DBG3("Consumer data pending for id %" PRIu64, session_id); |
806e2684 | 1267 | |
53efb85a MD |
1268 | memset(&msg, 0, sizeof(msg)); |
1269 | msg.cmd_type = LTTNG_CONSUMER_DATA_PENDING; | |
d88aee68 | 1270 | msg.u.data_pending.session_id = session_id; |
806e2684 | 1271 | |
56047f5a JG |
1272 | { |
1273 | /* Send command for each consumer. */ | |
1274 | lttng::urcu::read_lock_guard read_lock; | |
806e2684 | 1275 | |
56047f5a JG |
1276 | cds_lfht_for_each_entry (consumer->socks->ht, &iter.iter, socket, node.node) { |
1277 | pthread_mutex_lock(socket->lock); | |
1278 | ret = consumer_socket_send(socket, &msg, sizeof(msg)); | |
1279 | if (ret < 0) { | |
1280 | pthread_mutex_unlock(socket->lock); | |
1281 | goto error_unlock; | |
1282 | } | |
1283 | ||
1284 | /* | |
1285 | * No need for a recv reply status because the answer to the command is | |
1286 | * the reply status message. | |
1287 | */ | |
1288 | ret = consumer_socket_recv(socket, &ret_code, sizeof(ret_code)); | |
1289 | if (ret < 0) { | |
1290 | pthread_mutex_unlock(socket->lock); | |
1291 | goto error_unlock; | |
1292 | } | |
f50f23d9 | 1293 | |
806e2684 | 1294 | pthread_mutex_unlock(socket->lock); |
806e2684 | 1295 | |
56047f5a JG |
1296 | if (ret_code == 1) { |
1297 | break; | |
1298 | } | |
806e2684 DG |
1299 | } |
1300 | } | |
1301 | ||
d88aee68 | 1302 | DBG("Consumer data is %s pending for session id %" PRIu64, |
28ab034a JG |
1303 | ret_code == 1 ? "" : "NOT", |
1304 | session_id); | |
806e2684 DG |
1305 | return ret_code; |
1306 | ||
b82c5c4d | 1307 | error_unlock: |
806e2684 DG |
1308 | return -1; |
1309 | } | |
7972aab2 DG |
1310 | |
1311 | /* | |
1312 | * Send a flush command to consumer using the given channel key. | |
1313 | * | |
1314 | * Return 0 on success else a negative value. | |
1315 | */ | |
1316 | int consumer_flush_channel(struct consumer_socket *socket, uint64_t key) | |
1317 | { | |
1318 | int ret; | |
1319 | struct lttcomm_consumer_msg msg; | |
1320 | ||
a0377dfe | 1321 | LTTNG_ASSERT(socket); |
7972aab2 DG |
1322 | |
1323 | DBG2("Consumer flush channel key %" PRIu64, key); | |
1324 | ||
53efb85a | 1325 | memset(&msg, 0, sizeof(msg)); |
7972aab2 DG |
1326 | msg.cmd_type = LTTNG_CONSUMER_FLUSH_CHANNEL; |
1327 | msg.u.flush_channel.key = key; | |
1328 | ||
1329 | pthread_mutex_lock(socket->lock); | |
1330 | health_code_update(); | |
1331 | ||
1332 | ret = consumer_send_msg(socket, &msg); | |
1333 | if (ret < 0) { | |
1334 | goto end; | |
1335 | } | |
1336 | ||
1337 | end: | |
1338 | health_code_update(); | |
1339 | pthread_mutex_unlock(socket->lock); | |
1340 | return ret; | |
1341 | } | |
1342 | ||
0dd01979 MD |
1343 | /* |
1344 | * Send a clear quiescent command to consumer using the given channel key. | |
1345 | * | |
1346 | * Return 0 on success else a negative value. | |
1347 | */ | |
1348 | int consumer_clear_quiescent_channel(struct consumer_socket *socket, uint64_t key) | |
1349 | { | |
1350 | int ret; | |
1351 | struct lttcomm_consumer_msg msg; | |
1352 | ||
a0377dfe | 1353 | LTTNG_ASSERT(socket); |
0dd01979 MD |
1354 | |
1355 | DBG2("Consumer clear quiescent channel key %" PRIu64, key); | |
1356 | ||
1357 | memset(&msg, 0, sizeof(msg)); | |
1358 | msg.cmd_type = LTTNG_CONSUMER_CLEAR_QUIESCENT_CHANNEL; | |
1359 | msg.u.clear_quiescent_channel.key = key; | |
1360 | ||
1361 | pthread_mutex_lock(socket->lock); | |
1362 | health_code_update(); | |
1363 | ||
1364 | ret = consumer_send_msg(socket, &msg); | |
1365 | if (ret < 0) { | |
1366 | goto end; | |
1367 | } | |
1368 | ||
1369 | end: | |
1370 | health_code_update(); | |
1371 | pthread_mutex_unlock(socket->lock); | |
1372 | return ret; | |
1373 | } | |
1374 | ||
7972aab2 | 1375 | /* |
dc2bbdae MD |
1376 | * Send a close metadata command to consumer using the given channel key. |
1377 | * Called with registry lock held. | |
7972aab2 DG |
1378 | * |
1379 | * Return 0 on success else a negative value. | |
1380 | */ | |
28ab034a | 1381 | int consumer_close_metadata(struct consumer_socket *socket, uint64_t metadata_key) |
7972aab2 DG |
1382 | { |
1383 | int ret; | |
1384 | struct lttcomm_consumer_msg msg; | |
1385 | ||
a0377dfe | 1386 | LTTNG_ASSERT(socket); |
7972aab2 DG |
1387 | |
1388 | DBG2("Consumer close metadata channel key %" PRIu64, metadata_key); | |
1389 | ||
53efb85a | 1390 | memset(&msg, 0, sizeof(msg)); |
7972aab2 DG |
1391 | msg.cmd_type = LTTNG_CONSUMER_CLOSE_METADATA; |
1392 | msg.u.close_metadata.key = metadata_key; | |
1393 | ||
1394 | pthread_mutex_lock(socket->lock); | |
1395 | health_code_update(); | |
1396 | ||
1397 | ret = consumer_send_msg(socket, &msg); | |
1398 | if (ret < 0) { | |
1399 | goto end; | |
1400 | } | |
1401 | ||
1402 | end: | |
1403 | health_code_update(); | |
1404 | pthread_mutex_unlock(socket->lock); | |
1405 | return ret; | |
1406 | } | |
1407 | ||
1408 | /* | |
1409 | * Send a setup metdata command to consumer using the given channel key. | |
1410 | * | |
1411 | * Return 0 on success else a negative value. | |
1412 | */ | |
28ab034a | 1413 | int consumer_setup_metadata(struct consumer_socket *socket, uint64_t metadata_key) |
7972aab2 DG |
1414 | { |
1415 | int ret; | |
1416 | struct lttcomm_consumer_msg msg; | |
1417 | ||
a0377dfe | 1418 | LTTNG_ASSERT(socket); |
7972aab2 DG |
1419 | |
1420 | DBG2("Consumer setup metadata channel key %" PRIu64, metadata_key); | |
1421 | ||
53efb85a | 1422 | memset(&msg, 0, sizeof(msg)); |
7972aab2 DG |
1423 | msg.cmd_type = LTTNG_CONSUMER_SETUP_METADATA; |
1424 | msg.u.setup_metadata.key = metadata_key; | |
1425 | ||
1426 | pthread_mutex_lock(socket->lock); | |
1427 | health_code_update(); | |
1428 | ||
1429 | ret = consumer_send_msg(socket, &msg); | |
1430 | if (ret < 0) { | |
1431 | goto end; | |
1432 | } | |
1433 | ||
1434 | end: | |
1435 | health_code_update(); | |
1436 | pthread_mutex_unlock(socket->lock); | |
1437 | return ret; | |
1438 | } | |
1439 | ||
1440 | /* | |
dc2bbdae MD |
1441 | * Send metadata string to consumer. |
1442 | * RCU read-side lock must be held to guarantee existence of socket. | |
7972aab2 DG |
1443 | * |
1444 | * Return 0 on success else a negative value. | |
1445 | */ | |
1446 | int consumer_push_metadata(struct consumer_socket *socket, | |
28ab034a JG |
1447 | uint64_t metadata_key, |
1448 | char *metadata_str, | |
1449 | size_t len, | |
1450 | size_t target_offset, | |
1451 | uint64_t version) | |
7972aab2 DG |
1452 | { |
1453 | int ret; | |
1454 | struct lttcomm_consumer_msg msg; | |
1455 | ||
a0377dfe | 1456 | LTTNG_ASSERT(socket); |
48b7cdc2 | 1457 | ASSERT_RCU_READ_LOCKED(); |
7972aab2 | 1458 | |
9363801e | 1459 | DBG2("Consumer push metadata to consumer socket %d", *socket->fd_ptr); |
7972aab2 | 1460 | |
dc2bbdae MD |
1461 | pthread_mutex_lock(socket->lock); |
1462 | ||
53efb85a | 1463 | memset(&msg, 0, sizeof(msg)); |
7972aab2 DG |
1464 | msg.cmd_type = LTTNG_CONSUMER_PUSH_METADATA; |
1465 | msg.u.push_metadata.key = metadata_key; | |
1466 | msg.u.push_metadata.target_offset = target_offset; | |
1467 | msg.u.push_metadata.len = len; | |
93ec662e | 1468 | msg.u.push_metadata.version = version; |
7972aab2 | 1469 | |
7972aab2 DG |
1470 | health_code_update(); |
1471 | ret = consumer_send_msg(socket, &msg); | |
331744e3 | 1472 | if (ret < 0 || len == 0) { |
7972aab2 DG |
1473 | goto end; |
1474 | } | |
1475 | ||
28ab034a | 1476 | DBG3("Consumer pushing metadata on sock %d of len %zu", *socket->fd_ptr, len); |
7972aab2 | 1477 | |
52898cb1 | 1478 | ret = consumer_socket_send(socket, metadata_str, len); |
7972aab2 DG |
1479 | if (ret < 0) { |
1480 | goto end; | |
1481 | } | |
1482 | ||
1483 | health_code_update(); | |
1484 | ret = consumer_recv_status_reply(socket); | |
1485 | if (ret < 0) { | |
1486 | goto end; | |
1487 | } | |
1488 | ||
1489 | end: | |
dc2bbdae | 1490 | pthread_mutex_unlock(socket->lock); |
7972aab2 | 1491 | health_code_update(); |
7972aab2 DG |
1492 | return ret; |
1493 | } | |
6dc3064a DG |
1494 | |
1495 | /* | |
1496 | * Ask the consumer to snapshot a specific channel using the key. | |
1497 | * | |
9a654598 | 1498 | * Returns LTTNG_OK on success or else an LTTng error code. |
6dc3064a | 1499 | */ |
9a654598 | 1500 | enum lttng_error_code consumer_snapshot_channel(struct consumer_socket *socket, |
28ab034a JG |
1501 | uint64_t key, |
1502 | const struct consumer_output *output, | |
1503 | int metadata, | |
1504 | const char *channel_path, | |
1505 | uint64_t nb_packets_per_stream) | |
6dc3064a DG |
1506 | { |
1507 | int ret; | |
9a654598 | 1508 | enum lttng_error_code status = LTTNG_OK; |
6dc3064a DG |
1509 | struct lttcomm_consumer_msg msg; |
1510 | ||
a0377dfe FD |
1511 | LTTNG_ASSERT(socket); |
1512 | LTTNG_ASSERT(output); | |
6dc3064a DG |
1513 | |
1514 | DBG("Consumer snapshot channel key %" PRIu64, key); | |
1515 | ||
ee91bab2 | 1516 | memset(&msg, 0, sizeof(msg)); |
6dc3064a DG |
1517 | msg.cmd_type = LTTNG_CONSUMER_SNAPSHOT_CHANNEL; |
1518 | msg.u.snapshot_channel.key = key; | |
d07ceecd | 1519 | msg.u.snapshot_channel.nb_packets_per_stream = nb_packets_per_stream; |
6dc3064a DG |
1520 | msg.u.snapshot_channel.metadata = metadata; |
1521 | ||
348a81dc | 1522 | if (output->type == CONSUMER_DST_NET) { |
28ab034a | 1523 | msg.u.snapshot_channel.relayd_id = output->net_seq_index; |
6dc3064a | 1524 | msg.u.snapshot_channel.use_relayd = 1; |
6dc3064a | 1525 | } else { |
07b86b52 | 1526 | msg.u.snapshot_channel.relayd_id = (uint64_t) -1ULL; |
d2956687 JG |
1527 | } |
1528 | ret = lttng_strncpy(msg.u.snapshot_channel.pathname, | |
28ab034a JG |
1529 | channel_path, |
1530 | sizeof(msg.u.snapshot_channel.pathname)); | |
d2956687 JG |
1531 | if (ret < 0) { |
1532 | ERR("Snapshot path exceeds the maximal allowed length of %zu bytes (%zu bytes required) with path \"%s\"", | |
28ab034a JG |
1533 | sizeof(msg.u.snapshot_channel.pathname), |
1534 | strlen(channel_path), | |
1535 | channel_path); | |
d2956687 JG |
1536 | status = LTTNG_ERR_SNAPSHOT_FAIL; |
1537 | goto error; | |
6dc3064a DG |
1538 | } |
1539 | ||
1540 | health_code_update(); | |
9d1103e6 | 1541 | pthread_mutex_lock(socket->lock); |
6dc3064a | 1542 | ret = consumer_send_msg(socket, &msg); |
9d1103e6 | 1543 | pthread_mutex_unlock(socket->lock); |
6dc3064a | 1544 | if (ret < 0) { |
9bbfb88c MD |
1545 | switch (-ret) { |
1546 | case LTTCOMM_CONSUMERD_CHAN_NOT_FOUND: | |
9a654598 | 1547 | status = LTTNG_ERR_CHAN_NOT_FOUND; |
9bbfb88c MD |
1548 | break; |
1549 | default: | |
9a654598 | 1550 | status = LTTNG_ERR_SNAPSHOT_FAIL; |
9bbfb88c MD |
1551 | break; |
1552 | } | |
6dc3064a DG |
1553 | goto error; |
1554 | } | |
1555 | ||
1556 | error: | |
1557 | health_code_update(); | |
9a654598 | 1558 | return status; |
6dc3064a | 1559 | } |
fb83fe64 JD |
1560 | |
1561 | /* | |
1562 | * Ask the consumer the number of discarded events for a channel. | |
1563 | */ | |
28ab034a JG |
1564 | int consumer_get_discarded_events(uint64_t session_id, |
1565 | uint64_t channel_key, | |
1566 | struct consumer_output *consumer, | |
1567 | uint64_t *discarded) | |
fb83fe64 JD |
1568 | { |
1569 | int ret; | |
1570 | struct consumer_socket *socket; | |
1571 | struct lttng_ht_iter iter; | |
1572 | struct lttcomm_consumer_msg msg; | |
1573 | ||
a0377dfe | 1574 | LTTNG_ASSERT(consumer); |
fb83fe64 JD |
1575 | |
1576 | DBG3("Consumer discarded events id %" PRIu64, session_id); | |
1577 | ||
1578 | memset(&msg, 0, sizeof(msg)); | |
1579 | msg.cmd_type = LTTNG_CONSUMER_DISCARDED_EVENTS; | |
1580 | msg.u.discarded_events.session_id = session_id; | |
1581 | msg.u.discarded_events.channel_key = channel_key; | |
1582 | ||
1583 | *discarded = 0; | |
1584 | ||
56047f5a JG |
1585 | /* Send command for each consumer. */ |
1586 | { | |
1587 | lttng::urcu::read_lock_guard read_lock; | |
1588 | ||
1589 | cds_lfht_for_each_entry (consumer->socks->ht, &iter.iter, socket, node.node) { | |
1590 | uint64_t consumer_discarded = 0; | |
1591 | ||
1592 | pthread_mutex_lock(socket->lock); | |
1593 | ret = consumer_socket_send(socket, &msg, sizeof(msg)); | |
1594 | if (ret < 0) { | |
1595 | pthread_mutex_unlock(socket->lock); | |
1596 | goto end; | |
1597 | } | |
1598 | ||
1599 | /* | |
1600 | * No need for a recv reply status because the answer to the | |
1601 | * command is the reply status message. | |
1602 | */ | |
1603 | ret = consumer_socket_recv( | |
1604 | socket, &consumer_discarded, sizeof(consumer_discarded)); | |
1605 | if (ret < 0) { | |
1606 | ERR("get discarded events"); | |
1607 | pthread_mutex_unlock(socket->lock); | |
1608 | goto end; | |
1609 | } | |
fb83fe64 | 1610 | |
fb83fe64 | 1611 | pthread_mutex_unlock(socket->lock); |
56047f5a | 1612 | *discarded += consumer_discarded; |
fb83fe64 | 1613 | } |
fb83fe64 | 1614 | } |
56047f5a | 1615 | |
fb83fe64 | 1616 | ret = 0; |
28ab034a | 1617 | DBG("Consumer discarded %" PRIu64 " events in session id %" PRIu64, *discarded, session_id); |
fb83fe64 JD |
1618 | |
1619 | end: | |
fb83fe64 JD |
1620 | return ret; |
1621 | } | |
1622 | ||
1623 | /* | |
1624 | * Ask the consumer the number of lost packets for a channel. | |
1625 | */ | |
28ab034a JG |
1626 | int consumer_get_lost_packets(uint64_t session_id, |
1627 | uint64_t channel_key, | |
1628 | struct consumer_output *consumer, | |
1629 | uint64_t *lost) | |
fb83fe64 JD |
1630 | { |
1631 | int ret; | |
1632 | struct consumer_socket *socket; | |
1633 | struct lttng_ht_iter iter; | |
1634 | struct lttcomm_consumer_msg msg; | |
1635 | ||
a0377dfe | 1636 | LTTNG_ASSERT(consumer); |
fb83fe64 JD |
1637 | |
1638 | DBG3("Consumer lost packets id %" PRIu64, session_id); | |
1639 | ||
1640 | memset(&msg, 0, sizeof(msg)); | |
1641 | msg.cmd_type = LTTNG_CONSUMER_LOST_PACKETS; | |
1642 | msg.u.lost_packets.session_id = session_id; | |
1643 | msg.u.lost_packets.channel_key = channel_key; | |
1644 | ||
1645 | *lost = 0; | |
1646 | ||
56047f5a JG |
1647 | /* Send command for each consumer. */ |
1648 | { | |
1649 | lttng::urcu::read_lock_guard read_lock; | |
fb83fe64 | 1650 | |
56047f5a JG |
1651 | cds_lfht_for_each_entry (consumer->socks->ht, &iter.iter, socket, node.node) { |
1652 | uint64_t consumer_lost = 0; | |
1653 | pthread_mutex_lock(socket->lock); | |
1654 | ret = consumer_socket_send(socket, &msg, sizeof(msg)); | |
1655 | if (ret < 0) { | |
1656 | pthread_mutex_unlock(socket->lock); | |
1657 | goto end; | |
1658 | } | |
1659 | ||
1660 | /* | |
1661 | * No need for a recv reply status because the answer to the | |
1662 | * command is the reply status message. | |
1663 | */ | |
1664 | ret = consumer_socket_recv(socket, &consumer_lost, sizeof(consumer_lost)); | |
1665 | if (ret < 0) { | |
1666 | ERR("get lost packets"); | |
1667 | pthread_mutex_unlock(socket->lock); | |
1668 | goto end; | |
1669 | } | |
fb83fe64 | 1670 | pthread_mutex_unlock(socket->lock); |
56047f5a | 1671 | *lost += consumer_lost; |
fb83fe64 | 1672 | } |
fb83fe64 | 1673 | } |
56047f5a | 1674 | |
fb83fe64 | 1675 | ret = 0; |
28ab034a | 1676 | DBG("Consumer lost %" PRIu64 " packets in session id %" PRIu64, *lost, session_id); |
fb83fe64 JD |
1677 | |
1678 | end: | |
fb83fe64 JD |
1679 | return ret; |
1680 | } | |
a1ae2ea5 | 1681 | |
5c408ad8 JD |
1682 | /* |
1683 | * Ask the consumer to rotate a channel. | |
5c408ad8 JD |
1684 | * |
1685 | * The new_chunk_id is the session->rotate_count that has been incremented | |
1686 | * when the rotation started. On the relay, this allows to keep track in which | |
1687 | * chunk each stream is currently writing to (for the rotate_pending operation). | |
1688 | */ | |
28ab034a JG |
1689 | int consumer_rotate_channel(struct consumer_socket *socket, |
1690 | uint64_t key, | |
1691 | struct consumer_output *output, | |
1692 | bool is_metadata_channel) | |
5c408ad8 JD |
1693 | { |
1694 | int ret; | |
1695 | struct lttcomm_consumer_msg msg; | |
1696 | ||
a0377dfe | 1697 | LTTNG_ASSERT(socket); |
5c408ad8 JD |
1698 | |
1699 | DBG("Consumer rotate channel key %" PRIu64, key); | |
1700 | ||
1701 | pthread_mutex_lock(socket->lock); | |
1702 | memset(&msg, 0, sizeof(msg)); | |
1703 | msg.cmd_type = LTTNG_CONSUMER_ROTATE_CHANNEL; | |
1704 | msg.u.rotate_channel.key = key; | |
1705 | msg.u.rotate_channel.metadata = !!is_metadata_channel; | |
5c408ad8 JD |
1706 | |
1707 | if (output->type == CONSUMER_DST_NET) { | |
1708 | msg.u.rotate_channel.relayd_id = output->net_seq_index; | |
5c408ad8 JD |
1709 | } else { |
1710 | msg.u.rotate_channel.relayd_id = (uint64_t) -1ULL; | |
5c408ad8 JD |
1711 | } |
1712 | ||
1713 | health_code_update(); | |
1714 | ret = consumer_send_msg(socket, &msg); | |
1715 | if (ret < 0) { | |
20f37cb4 MD |
1716 | switch (-ret) { |
1717 | case LTTCOMM_CONSUMERD_CHAN_NOT_FOUND: | |
1718 | ret = -LTTNG_ERR_CHAN_NOT_FOUND; | |
1719 | break; | |
1720 | default: | |
1721 | ret = -LTTNG_ERR_ROTATION_FAIL_CONSUMER; | |
1722 | break; | |
1723 | } | |
5c408ad8 JD |
1724 | goto error; |
1725 | } | |
5c408ad8 JD |
1726 | error: |
1727 | pthread_mutex_unlock(socket->lock); | |
1728 | health_code_update(); | |
1729 | return ret; | |
1730 | } | |
1731 | ||
04ed9e10 JG |
1732 | int consumer_open_channel_packets(struct consumer_socket *socket, uint64_t key) |
1733 | { | |
1734 | int ret; | |
7966af57 | 1735 | lttcomm_consumer_msg msg = { |
04ed9e10 | 1736 | .cmd_type = LTTNG_CONSUMER_OPEN_CHANNEL_PACKETS, |
1c9a0b0e | 1737 | .u = {}, |
04ed9e10 | 1738 | }; |
7966af57 | 1739 | msg.u.open_channel_packets.key = key; |
04ed9e10 | 1740 | |
a0377dfe | 1741 | LTTNG_ASSERT(socket); |
04ed9e10 JG |
1742 | |
1743 | DBG("Consumer open channel packets: channel key = %" PRIu64, key); | |
1744 | ||
1745 | health_code_update(); | |
1746 | ||
1747 | pthread_mutex_lock(socket->lock); | |
1748 | ret = consumer_send_msg(socket, &msg); | |
1749 | pthread_mutex_unlock(socket->lock); | |
1750 | if (ret < 0) { | |
1751 | goto error_socket; | |
1752 | } | |
1753 | ||
1754 | error_socket: | |
1755 | health_code_update(); | |
1756 | return ret; | |
1757 | } | |
1758 | ||
51a4828f MD |
1759 | int consumer_clear_channel(struct consumer_socket *socket, uint64_t key) |
1760 | { | |
1761 | int ret; | |
1762 | struct lttcomm_consumer_msg msg; | |
1763 | ||
a0377dfe | 1764 | LTTNG_ASSERT(socket); |
51a4828f MD |
1765 | |
1766 | DBG("Consumer clear channel %" PRIu64, key); | |
1767 | ||
1768 | memset(&msg, 0, sizeof(msg)); | |
1769 | msg.cmd_type = LTTNG_CONSUMER_CLEAR_CHANNEL; | |
1770 | msg.u.clear_channel.key = key; | |
1771 | ||
1772 | health_code_update(); | |
1773 | ||
1774 | pthread_mutex_lock(socket->lock); | |
1775 | ret = consumer_send_msg(socket, &msg); | |
1776 | if (ret < 0) { | |
1777 | goto error_socket; | |
1778 | } | |
1779 | ||
1780 | error_socket: | |
1781 | pthread_mutex_unlock(socket->lock); | |
1782 | ||
1783 | health_code_update(); | |
1784 | return ret; | |
1785 | } | |
1786 | ||
28ab034a | 1787 | int consumer_init(struct consumer_socket *socket, const lttng_uuid& sessiond_uuid) |
00fb02ac JD |
1788 | { |
1789 | int ret; | |
d2956687 JG |
1790 | struct lttcomm_consumer_msg msg = { |
1791 | .cmd_type = LTTNG_CONSUMER_INIT, | |
1c9a0b0e | 1792 | .u = {}, |
d2956687 | 1793 | }; |
00fb02ac | 1794 | |
a0377dfe | 1795 | LTTNG_ASSERT(socket); |
00fb02ac | 1796 | |
d2956687 | 1797 | DBG("Sending consumer initialization command"); |
328c2fe7 | 1798 | std::copy(sessiond_uuid.begin(), sessiond_uuid.end(), msg.u.init.sessiond_uuid); |
00fb02ac JD |
1799 | |
1800 | health_code_update(); | |
1801 | ret = consumer_send_msg(socket, &msg); | |
1802 | if (ret < 0) { | |
1803 | goto error; | |
1804 | } | |
1805 | ||
d88744a4 JD |
1806 | error: |
1807 | health_code_update(); | |
1808 | return ret; | |
1809 | } | |
1810 | ||
1811 | /* | |
d2956687 | 1812 | * Ask the consumer to create a new chunk for a given session. |
92816cc3 | 1813 | * |
d2956687 | 1814 | * Called with the consumer socket lock held. |
92816cc3 | 1815 | */ |
d2956687 | 1816 | int consumer_create_trace_chunk(struct consumer_socket *socket, |
28ab034a JG |
1817 | uint64_t relayd_id, |
1818 | uint64_t session_id, | |
1819 | struct lttng_trace_chunk *chunk, | |
1820 | const char *domain_subdir) | |
92816cc3 JG |
1821 | { |
1822 | int ret; | |
d2956687 JG |
1823 | enum lttng_trace_chunk_status chunk_status; |
1824 | struct lttng_credentials chunk_credentials; | |
cd9adb8b JG |
1825 | const struct lttng_directory_handle *chunk_directory_handle = nullptr; |
1826 | struct lttng_directory_handle *domain_handle = nullptr; | |
5da88b0f | 1827 | int domain_dirfd; |
d2956687 | 1828 | const char *chunk_name; |
913a542b | 1829 | bool chunk_name_overridden; |
d2956687 JG |
1830 | uint64_t chunk_id; |
1831 | time_t creation_timestamp; | |
1832 | char creation_timestamp_buffer[ISO8601_STR_LEN]; | |
1833 | const char *creation_timestamp_str = "(none)"; | |
1834 | const bool chunk_has_local_output = relayd_id == -1ULL; | |
69ebf37e | 1835 | enum lttng_trace_chunk_status tc_status; |
d2956687 JG |
1836 | struct lttcomm_consumer_msg msg = { |
1837 | .cmd_type = LTTNG_CONSUMER_CREATE_TRACE_CHUNK, | |
1c9a0b0e | 1838 | .u = {}, |
d2956687 | 1839 | }; |
7966af57 | 1840 | msg.u.create_trace_chunk.session_id = session_id; |
92816cc3 | 1841 | |
a0377dfe FD |
1842 | LTTNG_ASSERT(socket); |
1843 | LTTNG_ASSERT(chunk); | |
92816cc3 | 1844 | |
d2956687 | 1845 | if (relayd_id != -1ULL) { |
28ab034a | 1846 | LTTNG_OPTIONAL_SET(&msg.u.create_trace_chunk.relayd_id, relayd_id); |
d2956687 | 1847 | } |
92816cc3 | 1848 | |
28ab034a | 1849 | chunk_status = lttng_trace_chunk_get_name(chunk, &chunk_name, &chunk_name_overridden); |
d2956687 | 1850 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK && |
28ab034a | 1851 | chunk_status != LTTNG_TRACE_CHUNK_STATUS_NONE) { |
d2956687 JG |
1852 | ERR("Failed to get name of trace chunk"); |
1853 | ret = -LTTNG_ERR_FATAL; | |
92816cc3 JG |
1854 | goto error; |
1855 | } | |
913a542b | 1856 | if (chunk_name_overridden) { |
d2956687 | 1857 | ret = lttng_strncpy(msg.u.create_trace_chunk.override_name, |
28ab034a JG |
1858 | chunk_name, |
1859 | sizeof(msg.u.create_trace_chunk.override_name)); | |
d2956687 JG |
1860 | if (ret) { |
1861 | ERR("Trace chunk name \"%s\" exceeds the maximal length allowed by the consumer protocol", | |
28ab034a | 1862 | chunk_name); |
d2956687 JG |
1863 | ret = -LTTNG_ERR_FATAL; |
1864 | goto error; | |
1865 | } | |
1866 | } | |
92816cc3 | 1867 | |
28ab034a | 1868 | chunk_status = lttng_trace_chunk_get_creation_timestamp(chunk, &creation_timestamp); |
d2956687 JG |
1869 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { |
1870 | ret = -LTTNG_ERR_FATAL; | |
92816cc3 JG |
1871 | goto error; |
1872 | } | |
28ab034a | 1873 | msg.u.create_trace_chunk.creation_timestamp = (uint64_t) creation_timestamp; |
d2956687 | 1874 | /* Only used for logging purposes. */ |
28ab034a JG |
1875 | ret = time_to_iso8601_str( |
1876 | creation_timestamp, creation_timestamp_buffer, sizeof(creation_timestamp_buffer)); | |
1877 | creation_timestamp_str = !ret ? creation_timestamp_buffer : "(formatting error)"; | |
d2956687 JG |
1878 | |
1879 | chunk_status = lttng_trace_chunk_get_id(chunk, &chunk_id); | |
1880 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
1881 | /* | |
1882 | * Anonymous trace chunks should never be transmitted | |
1883 | * to remote peers (consumerd and relayd). They are used | |
1884 | * internally for backward-compatibility purposes. | |
1885 | */ | |
1886 | ret = -LTTNG_ERR_FATAL; | |
1887 | goto error; | |
1888 | } | |
1889 | msg.u.create_trace_chunk.chunk_id = chunk_id; | |
92816cc3 | 1890 | |
d2956687 | 1891 | if (chunk_has_local_output) { |
cbf53d23 | 1892 | chunk_status = lttng_trace_chunk_borrow_chunk_directory_handle( |
28ab034a | 1893 | chunk, &chunk_directory_handle); |
d2956687 JG |
1894 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { |
1895 | ret = -LTTNG_ERR_FATAL; | |
1896 | goto error; | |
1897 | } | |
28ab034a | 1898 | chunk_status = lttng_trace_chunk_get_credentials(chunk, &chunk_credentials); |
e5add6d0 JG |
1899 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { |
1900 | /* | |
1901 | * Not associating credentials to a sessiond chunk is a | |
1902 | * fatal internal error. | |
1903 | */ | |
1904 | ret = -LTTNG_ERR_FATAL; | |
1905 | goto error; | |
1906 | } | |
28ab034a | 1907 | tc_status = lttng_trace_chunk_create_subdirectory(chunk, domain_subdir); |
69ebf37e | 1908 | if (tc_status != LTTNG_TRACE_CHUNK_STATUS_OK) { |
5da88b0f | 1909 | PERROR("Failed to create chunk domain output directory \"%s\"", |
28ab034a | 1910 | domain_subdir); |
5da88b0f MD |
1911 | ret = -LTTNG_ERR_FATAL; |
1912 | goto error; | |
1913 | } | |
28ab034a JG |
1914 | domain_handle = lttng_directory_handle_create_from_handle(domain_subdir, |
1915 | chunk_directory_handle); | |
5da88b0f MD |
1916 | if (!domain_handle) { |
1917 | ret = -LTTNG_ERR_FATAL; | |
1918 | goto error; | |
1919 | } | |
1920 | ||
1921 | /* | |
1922 | * This will only compile on platforms that support | |
1923 | * dirfd (POSIX.2008). This is fine as the session daemon | |
1924 | * is only built for such platforms. | |
1925 | * | |
1926 | * The ownership of the chunk directory handle's is maintained | |
1927 | * by the trace chunk. | |
1928 | */ | |
28ab034a | 1929 | domain_dirfd = lttng_directory_handle_get_dirfd(domain_handle); |
a0377dfe | 1930 | LTTNG_ASSERT(domain_dirfd >= 0); |
5da88b0f | 1931 | |
e5add6d0 | 1932 | msg.u.create_trace_chunk.credentials.value.uid = |
28ab034a | 1933 | lttng_credentials_get_uid(&chunk_credentials); |
e5add6d0 | 1934 | msg.u.create_trace_chunk.credentials.value.gid = |
28ab034a | 1935 | lttng_credentials_get_gid(&chunk_credentials); |
e5add6d0 | 1936 | msg.u.create_trace_chunk.credentials.is_set = 1; |
d2956687 | 1937 | } |
d88744a4 | 1938 | |
d2956687 | 1939 | DBG("Sending consumer create trace chunk command: relayd_id = %" PRId64 |
28ab034a JG |
1940 | ", session_id = %" PRIu64 ", chunk_id = %" PRIu64 ", creation_timestamp = %s", |
1941 | relayd_id, | |
1942 | session_id, | |
1943 | chunk_id, | |
1944 | creation_timestamp_str); | |
d88744a4 JD |
1945 | health_code_update(); |
1946 | ret = consumer_send_msg(socket, &msg); | |
d2956687 | 1947 | health_code_update(); |
d88744a4 | 1948 | if (ret < 0) { |
d2956687 JG |
1949 | ERR("Trace chunk creation error on consumer"); |
1950 | ret = -LTTNG_ERR_CREATE_TRACE_CHUNK_FAIL_CONSUMER; | |
d88744a4 JD |
1951 | goto error; |
1952 | } | |
1953 | ||
d2956687 | 1954 | if (chunk_has_local_output) { |
5da88b0f | 1955 | DBG("Sending trace chunk domain directory fd to consumer"); |
d2956687 | 1956 | health_code_update(); |
5da88b0f | 1957 | ret = consumer_send_fds(socket, &domain_dirfd, 1); |
d2956687 JG |
1958 | health_code_update(); |
1959 | if (ret < 0) { | |
1960 | ERR("Trace chunk creation error on consumer"); | |
1961 | ret = -LTTNG_ERR_CREATE_TRACE_CHUNK_FAIL_CONSUMER; | |
1962 | goto error; | |
1963 | } | |
d88744a4 | 1964 | } |
00fb02ac | 1965 | error: |
5da88b0f | 1966 | lttng_directory_handle_put(domain_handle); |
00fb02ac JD |
1967 | return ret; |
1968 | } | |
1969 | ||
a1ae2ea5 | 1970 | /* |
d2956687 | 1971 | * Ask the consumer to close a trace chunk for a given session. |
a1ae2ea5 JD |
1972 | * |
1973 | * Called with the consumer socket lock held. | |
1974 | */ | |
d2956687 | 1975 | int consumer_close_trace_chunk(struct consumer_socket *socket, |
28ab034a JG |
1976 | uint64_t relayd_id, |
1977 | uint64_t session_id, | |
1978 | struct lttng_trace_chunk *chunk, | |
1979 | char *closed_trace_chunk_path) | |
a1ae2ea5 JD |
1980 | { |
1981 | int ret; | |
d2956687 | 1982 | enum lttng_trace_chunk_status chunk_status; |
7966af57 SM |
1983 | lttcomm_consumer_msg msg = { |
1984 | .cmd_type = LTTNG_CONSUMER_CLOSE_TRACE_CHUNK, | |
1c9a0b0e | 1985 | .u = {}, |
d2956687 | 1986 | }; |
7966af57 SM |
1987 | msg.u.close_trace_chunk.session_id = session_id; |
1988 | ||
ecd1a12f | 1989 | struct lttcomm_consumer_close_trace_chunk_reply reply; |
d2956687 JG |
1990 | uint64_t chunk_id; |
1991 | time_t close_timestamp; | |
bbc4768c JG |
1992 | enum lttng_trace_chunk_command_type close_command; |
1993 | const char *close_command_name = "none"; | |
ecd1a12f | 1994 | struct lttng_dynamic_buffer path_reception_buffer; |
a1ae2ea5 | 1995 | |
a0377dfe | 1996 | LTTNG_ASSERT(socket); |
ecd1a12f | 1997 | lttng_dynamic_buffer_init(&path_reception_buffer); |
a1ae2ea5 | 1998 | |
d2956687 | 1999 | if (relayd_id != -1ULL) { |
28ab034a | 2000 | LTTNG_OPTIONAL_SET(&msg.u.close_trace_chunk.relayd_id, relayd_id); |
bbc4768c JG |
2001 | } |
2002 | ||
28ab034a | 2003 | chunk_status = lttng_trace_chunk_get_close_command(chunk, &close_command); |
bbc4768c JG |
2004 | switch (chunk_status) { |
2005 | case LTTNG_TRACE_CHUNK_STATUS_OK: | |
2006 | LTTNG_OPTIONAL_SET(&msg.u.close_trace_chunk.close_command, | |
28ab034a | 2007 | (uint32_t) close_command); |
bbc4768c JG |
2008 | break; |
2009 | case LTTNG_TRACE_CHUNK_STATUS_NONE: | |
2010 | break; | |
2011 | default: | |
2012 | ERR("Failed to get trace chunk close command"); | |
2013 | ret = -1; | |
2014 | goto error; | |
a1ae2ea5 JD |
2015 | } |
2016 | ||
d2956687 JG |
2017 | chunk_status = lttng_trace_chunk_get_id(chunk, &chunk_id); |
2018 | /* | |
2019 | * Anonymous trace chunks should never be transmitted to remote peers | |
2020 | * (consumerd and relayd). They are used internally for | |
2021 | * backward-compatibility purposes. | |
2022 | */ | |
a0377dfe | 2023 | LTTNG_ASSERT(chunk_status == LTTNG_TRACE_CHUNK_STATUS_OK); |
d2956687 JG |
2024 | msg.u.close_trace_chunk.chunk_id = chunk_id; |
2025 | ||
28ab034a | 2026 | chunk_status = lttng_trace_chunk_get_close_timestamp(chunk, &close_timestamp); |
d2956687 JG |
2027 | /* |
2028 | * A trace chunk should be closed locally before being closed remotely. | |
2029 | * Otherwise, the close timestamp would never be transmitted to the | |
2030 | * peers. | |
2031 | */ | |
a0377dfe | 2032 | LTTNG_ASSERT(chunk_status == LTTNG_TRACE_CHUNK_STATUS_OK); |
d2956687 JG |
2033 | msg.u.close_trace_chunk.close_timestamp = (uint64_t) close_timestamp; |
2034 | ||
bbc4768c | 2035 | if (msg.u.close_trace_chunk.close_command.is_set) { |
28ab034a | 2036 | close_command_name = lttng_trace_chunk_command_type_get_name(close_command); |
bbc4768c | 2037 | } |
d2956687 | 2038 | DBG("Sending consumer close trace chunk command: relayd_id = %" PRId64 |
28ab034a JG |
2039 | ", session_id = %" PRIu64 ", chunk_id = %" PRIu64 ", close command = \"%s\"", |
2040 | relayd_id, | |
2041 | session_id, | |
2042 | chunk_id, | |
2043 | close_command_name); | |
a1ae2ea5 JD |
2044 | |
2045 | health_code_update(); | |
ecd1a12f | 2046 | ret = consumer_socket_send(socket, &msg, sizeof(struct lttcomm_consumer_msg)); |
a1ae2ea5 | 2047 | if (ret < 0) { |
d2956687 | 2048 | ret = -LTTNG_ERR_CLOSE_TRACE_CHUNK_FAIL_CONSUMER; |
a1ae2ea5 JD |
2049 | goto error; |
2050 | } | |
ecd1a12f MD |
2051 | ret = consumer_socket_recv(socket, &reply, sizeof(reply)); |
2052 | if (ret < 0) { | |
2053 | ret = -LTTNG_ERR_CLOSE_TRACE_CHUNK_FAIL_CONSUMER; | |
2054 | goto error; | |
2055 | } | |
2056 | if (reply.path_length >= LTTNG_PATH_MAX) { | |
28ab034a JG |
2057 | ERR("Invalid path returned by relay daemon: %" PRIu32 |
2058 | "bytes exceeds maximal allowed length of %d bytes", | |
2059 | reply.path_length, | |
2060 | LTTNG_PATH_MAX); | |
ecd1a12f MD |
2061 | ret = -LTTNG_ERR_INVALID_PROTOCOL; |
2062 | goto error; | |
2063 | } | |
28ab034a | 2064 | ret = lttng_dynamic_buffer_set_size(&path_reception_buffer, reply.path_length); |
ecd1a12f MD |
2065 | if (ret) { |
2066 | ERR("Failed to allocate reception buffer of path returned by the \"close trace chunk\" command"); | |
2067 | ret = -LTTNG_ERR_NOMEM; | |
2068 | goto error; | |
2069 | } | |
28ab034a | 2070 | ret = consumer_socket_recv(socket, path_reception_buffer.data, path_reception_buffer.size); |
ecd1a12f MD |
2071 | if (ret < 0) { |
2072 | ERR("Communication error while receiving path of closed trace chunk"); | |
2073 | ret = -LTTNG_ERR_CLOSE_TRACE_CHUNK_FAIL_CONSUMER; | |
2074 | goto error; | |
2075 | } | |
2076 | if (path_reception_buffer.data[path_reception_buffer.size - 1] != '\0') { | |
2077 | ERR("Invalid path returned by relay daemon: not null-terminated"); | |
2078 | ret = -LTTNG_ERR_INVALID_PROTOCOL; | |
2079 | goto error; | |
2080 | } | |
2081 | if (closed_trace_chunk_path) { | |
2082 | /* | |
2083 | * closed_trace_chunk_path is assumed to have a length >= | |
2084 | * LTTNG_PATH_MAX | |
2085 | */ | |
28ab034a JG |
2086 | memcpy(closed_trace_chunk_path, |
2087 | path_reception_buffer.data, | |
2088 | path_reception_buffer.size); | |
ecd1a12f | 2089 | } |
a1ae2ea5 | 2090 | error: |
ecd1a12f | 2091 | lttng_dynamic_buffer_reset(&path_reception_buffer); |
a1ae2ea5 JD |
2092 | health_code_update(); |
2093 | return ret; | |
2094 | } | |
3654ed19 | 2095 | |
d2956687 JG |
2096 | /* |
2097 | * Ask the consumer if a trace chunk exists. | |
2098 | * | |
2099 | * Called with the consumer socket lock held. | |
2100 | * Returns 0 on success, or a negative value on error. | |
2101 | */ | |
2102 | int consumer_trace_chunk_exists(struct consumer_socket *socket, | |
28ab034a JG |
2103 | uint64_t relayd_id, |
2104 | uint64_t session_id, | |
2105 | struct lttng_trace_chunk *chunk, | |
2106 | enum consumer_trace_chunk_exists_status *result) | |
3654ed19 JG |
2107 | { |
2108 | int ret; | |
d2956687 | 2109 | enum lttng_trace_chunk_status chunk_status; |
7966af57 | 2110 | lttcomm_consumer_msg msg = { |
d2956687 | 2111 | .cmd_type = LTTNG_CONSUMER_TRACE_CHUNK_EXISTS, |
1c9a0b0e | 2112 | .u = {}, |
3654ed19 | 2113 | }; |
7966af57 SM |
2114 | msg.u.trace_chunk_exists.session_id = session_id; |
2115 | ||
d2956687 JG |
2116 | uint64_t chunk_id; |
2117 | const char *consumer_reply_str; | |
3654ed19 | 2118 | |
a0377dfe | 2119 | LTTNG_ASSERT(socket); |
3654ed19 | 2120 | |
d2956687 | 2121 | if (relayd_id != -1ULL) { |
28ab034a | 2122 | LTTNG_OPTIONAL_SET(&msg.u.trace_chunk_exists.relayd_id, relayd_id); |
d2956687 JG |
2123 | } |
2124 | ||
2125 | chunk_status = lttng_trace_chunk_get_id(chunk, &chunk_id); | |
2126 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
2127 | /* | |
2128 | * Anonymous trace chunks should never be transmitted | |
2129 | * to remote peers (consumerd and relayd). They are used | |
2130 | * internally for backward-compatibility purposes. | |
2131 | */ | |
2132 | ret = -LTTNG_ERR_FATAL; | |
2133 | goto error; | |
2134 | } | |
2135 | msg.u.trace_chunk_exists.chunk_id = chunk_id; | |
2136 | ||
2137 | DBG("Sending consumer trace chunk exists command: relayd_id = %" PRId64 | |
28ab034a JG |
2138 | ", session_id = %" PRIu64 ", chunk_id = %" PRIu64, |
2139 | relayd_id, | |
2140 | session_id, | |
2141 | chunk_id); | |
3654ed19 JG |
2142 | |
2143 | health_code_update(); | |
2144 | ret = consumer_send_msg(socket, &msg); | |
d2956687 JG |
2145 | switch (-ret) { |
2146 | case LTTCOMM_CONSUMERD_UNKNOWN_TRACE_CHUNK: | |
2147 | consumer_reply_str = "unknown trace chunk"; | |
2148 | *result = CONSUMER_TRACE_CHUNK_EXISTS_STATUS_UNKNOWN_CHUNK; | |
2149 | break; | |
2150 | case LTTCOMM_CONSUMERD_TRACE_CHUNK_EXISTS_LOCAL: | |
2151 | consumer_reply_str = "trace chunk exists locally"; | |
2152 | *result = CONSUMER_TRACE_CHUNK_EXISTS_STATUS_EXISTS_LOCAL; | |
2153 | break; | |
2154 | case LTTCOMM_CONSUMERD_TRACE_CHUNK_EXISTS_REMOTE: | |
2155 | consumer_reply_str = "trace chunk exists on remote peer"; | |
2156 | *result = CONSUMER_TRACE_CHUNK_EXISTS_STATUS_EXISTS_REMOTE; | |
2157 | break; | |
2158 | default: | |
2159 | ERR("Consumer returned an error from TRACE_CHUNK_EXISTS command"); | |
2160 | ret = -1; | |
3654ed19 JG |
2161 | goto error; |
2162 | } | |
28ab034a | 2163 | DBG("Consumer reply to TRACE_CHUNK_EXISTS command: %s", consumer_reply_str); |
d2956687 | 2164 | ret = 0; |
3654ed19 JG |
2165 | error: |
2166 | health_code_update(); | |
2167 | return ret; | |
2168 | } |