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 |
a0a4f314 | 10 | #include "consumer-output.hpp" |
28ab034a JG |
11 | #include "consumer.hpp" |
12 | #include "health-sessiond.hpp" | |
13 | #include "lttng-sessiond.hpp" | |
14 | #include "ust-app.hpp" | |
15 | #include "utils.hpp" | |
00e2e675 | 16 | |
c9e313bc SM |
17 | #include <common/common.hpp> |
18 | #include <common/defaults.hpp> | |
c9e313bc SM |
19 | #include <common/relayd/relayd.hpp> |
20 | #include <common/string-utils/format.hpp> | |
56047f5a | 21 | #include <common/urcu.hpp> |
28ab034a | 22 | #include <common/uri.hpp> |
00e2e675 | 23 | |
28ab034a JG |
24 | #include <inttypes.h> |
25 | #include <stdio.h> | |
26 | #include <stdlib.h> | |
27 | #include <string.h> | |
28 | #include <sys/stat.h> | |
29 | #include <sys/types.h> | |
30 | #include <unistd.h> | |
00e2e675 | 31 | |
3b967712 MD |
32 | /* |
33 | * Return allocated full pathname of the session using the consumer trace path | |
34 | * and subdir if available. | |
35 | * | |
36 | * The caller can safely free(3) the returned value. On error, NULL is | |
37 | * returned. | |
38 | */ | |
39 | char *setup_channel_trace_path(struct consumer_output *consumer, | |
28ab034a JG |
40 | const char *session_path, |
41 | size_t *consumer_path_offset) | |
3b967712 MD |
42 | { |
43 | int ret; | |
44 | char *pathname; | |
45 | ||
a0377dfe FD |
46 | LTTNG_ASSERT(consumer); |
47 | LTTNG_ASSERT(session_path); | |
3b967712 MD |
48 | |
49 | health_code_update(); | |
50 | ||
51 | /* | |
52 | * Allocate the string ourself to make sure we never exceed | |
53 | * LTTNG_PATH_MAX. | |
54 | */ | |
64803277 | 55 | pathname = calloc<char>(LTTNG_PATH_MAX); |
3b967712 MD |
56 | if (!pathname) { |
57 | goto error; | |
58 | } | |
59 | ||
60 | /* Get correct path name destination */ | |
28ab034a JG |
61 | if (consumer->type == CONSUMER_DST_NET && consumer->relay_major_version == 2 && |
62 | consumer->relay_minor_version < 11) { | |
63 | ret = snprintf(pathname, | |
64 | LTTNG_PATH_MAX, | |
65 | "%s%s/%s/%s", | |
66 | consumer->dst.net.base_dir, | |
67 | consumer->chunk_path, | |
68 | consumer->domain_subdir, | |
69 | session_path); | |
5da88b0f | 70 | *consumer_path_offset = 0; |
3b967712 | 71 | } else { |
28ab034a JG |
72 | ret = snprintf( |
73 | pathname, LTTNG_PATH_MAX, "%s/%s", consumer->domain_subdir, session_path); | |
5da88b0f | 74 | *consumer_path_offset = strlen(consumer->domain_subdir) + 1; |
3b967712 | 75 | } |
28ab034a | 76 | DBG3("Consumer trace path relative to current trace chunk: \"%s\"", pathname); |
3b967712 MD |
77 | if (ret < 0) { |
78 | PERROR("Failed to format channel path"); | |
79 | goto error; | |
80 | } else if (ret >= LTTNG_PATH_MAX) { | |
81 | ERR("Truncation occurred while formatting channel path"); | |
3b967712 MD |
82 | goto error; |
83 | } | |
84 | ||
85 | return pathname; | |
86 | error: | |
87 | free(pathname); | |
cd9adb8b | 88 | return nullptr; |
3b967712 MD |
89 | } |
90 | ||
52898cb1 DG |
91 | /* |
92 | * Send a data payload using a given consumer socket of size len. | |
93 | * | |
94 | * The consumer socket lock MUST be acquired before calling this since this | |
95 | * function can change the fd value. | |
96 | * | |
97 | * Return 0 on success else a negative value on error. | |
98 | */ | |
28ab034a | 99 | int consumer_socket_send(struct consumer_socket *socket, const void *msg, size_t len) |
52898cb1 DG |
100 | { |
101 | int fd; | |
102 | ssize_t size; | |
103 | ||
a0377dfe FD |
104 | LTTNG_ASSERT(socket); |
105 | LTTNG_ASSERT(socket->fd_ptr); | |
106 | LTTNG_ASSERT(msg); | |
52898cb1 DG |
107 | |
108 | /* Consumer socket is invalid. Stopping. */ | |
9363801e | 109 | fd = *socket->fd_ptr; |
52898cb1 DG |
110 | if (fd < 0) { |
111 | goto error; | |
112 | } | |
113 | ||
114 | size = lttcomm_send_unix_sock(fd, msg, len); | |
115 | if (size < 0) { | |
116 | /* The above call will print a PERROR on error. */ | |
117 | DBG("Error when sending data to consumer on sock %d", fd); | |
118 | /* | |
92db7cdc DG |
119 | * At this point, the socket is not usable anymore thus closing it and |
120 | * setting the file descriptor to -1 so it is not reused. | |
52898cb1 DG |
121 | */ |
122 | ||
123 | /* This call will PERROR on error. */ | |
124 | (void) lttcomm_close_unix_sock(fd); | |
9363801e | 125 | *socket->fd_ptr = -1; |
52898cb1 DG |
126 | goto error; |
127 | } | |
128 | ||
129 | return 0; | |
130 | ||
131 | error: | |
132 | return -1; | |
133 | } | |
134 | ||
135 | /* | |
136 | * Receive a data payload using a given consumer socket of size len. | |
137 | * | |
138 | * The consumer socket lock MUST be acquired before calling this since this | |
139 | * function can change the fd value. | |
140 | * | |
141 | * Return 0 on success else a negative value on error. | |
142 | */ | |
143 | int consumer_socket_recv(struct consumer_socket *socket, void *msg, size_t len) | |
144 | { | |
145 | int fd; | |
146 | ssize_t size; | |
147 | ||
a0377dfe FD |
148 | LTTNG_ASSERT(socket); |
149 | LTTNG_ASSERT(socket->fd_ptr); | |
150 | LTTNG_ASSERT(msg); | |
52898cb1 DG |
151 | |
152 | /* Consumer socket is invalid. Stopping. */ | |
9363801e | 153 | fd = *socket->fd_ptr; |
52898cb1 DG |
154 | if (fd < 0) { |
155 | goto error; | |
156 | } | |
157 | ||
158 | size = lttcomm_recv_unix_sock(fd, msg, len); | |
159 | if (size <= 0) { | |
160 | /* The above call will print a PERROR on error. */ | |
161 | DBG("Error when receiving data from the consumer socket %d", fd); | |
162 | /* | |
92db7cdc DG |
163 | * At this point, the socket is not usable anymore thus closing it and |
164 | * setting the file descriptor to -1 so it is not reused. | |
52898cb1 DG |
165 | */ |
166 | ||
167 | /* This call will PERROR on error. */ | |
168 | (void) lttcomm_close_unix_sock(fd); | |
9363801e | 169 | *socket->fd_ptr = -1; |
52898cb1 DG |
170 | goto error; |
171 | } | |
172 | ||
173 | return 0; | |
174 | ||
175 | error: | |
176 | return -1; | |
177 | } | |
178 | ||
f50f23d9 DG |
179 | /* |
180 | * Receive a reply command status message from the consumer. Consumer socket | |
181 | * lock MUST be acquired before calling this function. | |
182 | * | |
183 | * Return 0 on success, -1 on recv error or a negative lttng error code which | |
184 | * was possibly returned by the consumer. | |
185 | */ | |
186 | int consumer_recv_status_reply(struct consumer_socket *sock) | |
187 | { | |
188 | int ret; | |
189 | struct lttcomm_consumer_status_msg reply; | |
190 | ||
a0377dfe | 191 | LTTNG_ASSERT(sock); |
f50f23d9 | 192 | |
52898cb1 DG |
193 | ret = consumer_socket_recv(sock, &reply, sizeof(reply)); |
194 | if (ret < 0) { | |
f50f23d9 DG |
195 | goto end; |
196 | } | |
197 | ||
0c759fc9 | 198 | if (reply.ret_code == LTTCOMM_CONSUMERD_SUCCESS) { |
f50f23d9 DG |
199 | /* All good. */ |
200 | ret = 0; | |
201 | } else { | |
202 | ret = -reply.ret_code; | |
ffe60014 | 203 | DBG("Consumer ret code %d", ret); |
f50f23d9 DG |
204 | } |
205 | ||
206 | end: | |
207 | return ret; | |
208 | } | |
209 | ||
ffe60014 DG |
210 | /* |
211 | * Once the ASK_CHANNEL command is sent to the consumer, the channel | |
212 | * information are sent back. This call receives that data and populates key | |
213 | * and stream_count. | |
214 | * | |
215 | * On success return 0 and both key and stream_count are set. On error, a | |
216 | * negative value is sent back and both parameters are untouched. | |
217 | */ | |
218 | int consumer_recv_status_channel(struct consumer_socket *sock, | |
28ab034a JG |
219 | uint64_t *key, |
220 | unsigned int *stream_count) | |
ffe60014 DG |
221 | { |
222 | int ret; | |
223 | struct lttcomm_consumer_status_channel reply; | |
224 | ||
a0377dfe FD |
225 | LTTNG_ASSERT(sock); |
226 | LTTNG_ASSERT(stream_count); | |
227 | LTTNG_ASSERT(key); | |
ffe60014 | 228 | |
52898cb1 DG |
229 | ret = consumer_socket_recv(sock, &reply, sizeof(reply)); |
230 | if (ret < 0) { | |
ffe60014 DG |
231 | goto end; |
232 | } | |
233 | ||
234 | /* An error is possible so don't touch the key and stream_count. */ | |
0c759fc9 | 235 | if (reply.ret_code != LTTCOMM_CONSUMERD_SUCCESS) { |
ffe60014 DG |
236 | ret = -1; |
237 | goto end; | |
238 | } | |
239 | ||
240 | *key = reply.key; | |
241 | *stream_count = reply.stream_count; | |
0c759fc9 | 242 | ret = 0; |
ffe60014 DG |
243 | |
244 | end: | |
245 | return ret; | |
246 | } | |
247 | ||
2f77fc4b DG |
248 | /* |
249 | * Send destroy relayd command to consumer. | |
250 | * | |
251 | * On success return positive value. On error, negative value. | |
252 | */ | |
28ab034a | 253 | int consumer_send_destroy_relayd(struct consumer_socket *sock, struct consumer_output *consumer) |
2f77fc4b DG |
254 | { |
255 | int ret; | |
256 | struct lttcomm_consumer_msg msg; | |
257 | ||
a0377dfe FD |
258 | LTTNG_ASSERT(consumer); |
259 | LTTNG_ASSERT(sock); | |
2f77fc4b | 260 | |
9363801e | 261 | DBG2("Sending destroy relayd command to consumer sock %d", *sock->fd_ptr); |
2f77fc4b | 262 | |
53efb85a | 263 | memset(&msg, 0, sizeof(msg)); |
2f77fc4b DG |
264 | msg.cmd_type = LTTNG_CONSUMER_DESTROY_RELAYD; |
265 | msg.u.destroy_relayd.net_seq_idx = consumer->net_seq_index; | |
266 | ||
267 | pthread_mutex_lock(sock->lock); | |
52898cb1 | 268 | ret = consumer_socket_send(sock, &msg, sizeof(msg)); |
2f77fc4b | 269 | if (ret < 0) { |
52898cb1 | 270 | goto error; |
2f77fc4b DG |
271 | } |
272 | ||
f50f23d9 DG |
273 | /* Don't check the return value. The caller will do it. */ |
274 | ret = consumer_recv_status_reply(sock); | |
275 | ||
2f77fc4b DG |
276 | DBG2("Consumer send destroy relayd command done"); |
277 | ||
278 | error: | |
52898cb1 | 279 | pthread_mutex_unlock(sock->lock); |
2f77fc4b DG |
280 | return ret; |
281 | } | |
282 | ||
283 | /* | |
284 | * For each consumer socket in the consumer output object, send a destroy | |
285 | * relayd command. | |
286 | */ | |
287 | void consumer_output_send_destroy_relayd(struct consumer_output *consumer) | |
288 | { | |
2f77fc4b DG |
289 | struct lttng_ht_iter iter; |
290 | struct consumer_socket *socket; | |
291 | ||
a0377dfe | 292 | LTTNG_ASSERT(consumer); |
2f77fc4b DG |
293 | |
294 | /* Destroy any relayd connection */ | |
6dc3064a | 295 | if (consumer->type == CONSUMER_DST_NET) { |
07c4863f | 296 | const lttng::urcu::read_lock_guard read_lock; |
56047f5a | 297 | |
28ab034a | 298 | cds_lfht_for_each_entry (consumer->socks->ht, &iter.iter, socket, node.node) { |
56047f5a JG |
299 | /* Send destroy relayd command. */ |
300 | const int ret = consumer_send_destroy_relayd(socket, consumer); | |
c617c0c6 | 301 | |
2f77fc4b | 302 | if (ret < 0) { |
c5c45efa | 303 | DBG("Unable to send destroy relayd command to consumer"); |
2f77fc4b DG |
304 | /* Continue since we MUST delete everything at this point. */ |
305 | } | |
306 | } | |
2f77fc4b DG |
307 | } |
308 | } | |
309 | ||
a4b92340 DG |
310 | /* |
311 | * From a consumer_data structure, allocate and add a consumer socket to the | |
312 | * consumer output. | |
313 | * | |
314 | * Return 0 on success, else negative value on error | |
315 | */ | |
28ab034a | 316 | int consumer_create_socket(struct consumer_data *data, struct consumer_output *output) |
a4b92340 DG |
317 | { |
318 | int ret = 0; | |
319 | struct consumer_socket *socket; | |
320 | ||
a0377dfe | 321 | LTTNG_ASSERT(data); |
a4b92340 | 322 | |
07c4863f | 323 | const lttng::urcu::read_lock_guard read_lock; |
56047f5a | 324 | |
cd9adb8b | 325 | if (output == nullptr || data->cmd_sock < 0) { |
a4b92340 DG |
326 | /* |
327 | * Not an error. Possible there is simply not spawned consumer or it's | |
328 | * disabled for the tracing session asking the socket. | |
329 | */ | |
330 | goto error; | |
331 | } | |
332 | ||
a4b92340 | 333 | socket = consumer_find_socket(data->cmd_sock, output); |
cd9adb8b | 334 | if (socket == nullptr) { |
4ce514c4 | 335 | socket = consumer_allocate_socket(&data->cmd_sock); |
cd9adb8b | 336 | if (socket == nullptr) { |
a4b92340 DG |
337 | ret = -1; |
338 | goto error; | |
339 | } | |
340 | ||
2f77fc4b | 341 | socket->registered = 0; |
a4b92340 | 342 | socket->lock = &data->lock; |
a4b92340 | 343 | consumer_add_socket(socket, output); |
a4b92340 DG |
344 | } |
345 | ||
6dc3064a DG |
346 | socket->type = data->type; |
347 | ||
28ab034a | 348 | DBG3("Consumer socket created (fd: %d) and added to output", data->cmd_sock); |
a4b92340 DG |
349 | |
350 | error: | |
351 | return ret; | |
352 | } | |
353 | ||
7972aab2 DG |
354 | /* |
355 | * Return the consumer socket from the given consumer output with the right | |
356 | * bitness. On error, returns NULL. | |
357 | * | |
358 | * The caller MUST acquire a rcu read side lock and keep it until the socket | |
359 | * object reference is not needed anymore. | |
360 | */ | |
361 | struct consumer_socket *consumer_find_socket_by_bitness(int bits, | |
28ab034a | 362 | const struct consumer_output *consumer) |
7972aab2 DG |
363 | { |
364 | int consumer_fd; | |
cd9adb8b | 365 | struct consumer_socket *socket = nullptr; |
7972aab2 | 366 | |
48b7cdc2 FD |
367 | ASSERT_RCU_READ_LOCKED(); |
368 | ||
7972aab2 DG |
369 | switch (bits) { |
370 | case 64: | |
412d7227 | 371 | consumer_fd = uatomic_read(&the_ust_consumerd64_fd); |
7972aab2 DG |
372 | break; |
373 | case 32: | |
412d7227 | 374 | consumer_fd = uatomic_read(&the_ust_consumerd32_fd); |
7972aab2 DG |
375 | break; |
376 | default: | |
a0377dfe | 377 | abort(); |
7972aab2 DG |
378 | goto end; |
379 | } | |
380 | ||
381 | socket = consumer_find_socket(consumer_fd, consumer); | |
382 | if (!socket) { | |
28ab034a | 383 | ERR("Consumer socket fd %d not found in consumer obj %p", consumer_fd, consumer); |
7972aab2 DG |
384 | } |
385 | ||
386 | end: | |
387 | return socket; | |
388 | } | |
389 | ||
173af62f DG |
390 | /* |
391 | * Find a consumer_socket in a consumer_output hashtable. Read side lock must | |
392 | * be acquired before calling this function and across use of the | |
393 | * returned consumer_socket. | |
394 | */ | |
28ab034a | 395 | struct consumer_socket *consumer_find_socket(int key, const struct consumer_output *consumer) |
173af62f DG |
396 | { |
397 | struct lttng_ht_iter iter; | |
398 | struct lttng_ht_node_ulong *node; | |
cd9adb8b | 399 | struct consumer_socket *socket = nullptr; |
173af62f | 400 | |
48b7cdc2 FD |
401 | ASSERT_RCU_READ_LOCKED(); |
402 | ||
173af62f | 403 | /* Negative keys are lookup failures */ |
cd9adb8b JG |
404 | if (key < 0 || consumer == nullptr) { |
405 | return nullptr; | |
173af62f DG |
406 | } |
407 | ||
28ab034a | 408 | lttng_ht_lookup(consumer->socks, (void *) ((unsigned long) key), &iter); |
00d7d903 | 409 | node = lttng_ht_iter_get_node<lttng_ht_node_ulong>(&iter); |
cd9adb8b | 410 | if (node != nullptr) { |
0114db0e | 411 | socket = lttng::utils::container_of(node, &consumer_socket::node); |
173af62f DG |
412 | } |
413 | ||
414 | return socket; | |
415 | } | |
416 | ||
417 | /* | |
418 | * Allocate a new consumer_socket and return the pointer. | |
419 | */ | |
4ce514c4 | 420 | struct consumer_socket *consumer_allocate_socket(int *fd) |
173af62f | 421 | { |
cd9adb8b | 422 | struct consumer_socket *socket = nullptr; |
173af62f | 423 | |
a0377dfe | 424 | LTTNG_ASSERT(fd); |
4ce514c4 | 425 | |
64803277 | 426 | socket = zmalloc<consumer_socket>(); |
cd9adb8b | 427 | if (socket == nullptr) { |
173af62f DG |
428 | PERROR("zmalloc consumer socket"); |
429 | goto error; | |
430 | } | |
431 | ||
9363801e | 432 | socket->fd_ptr = fd; |
4ce514c4 | 433 | lttng_ht_node_init_ulong(&socket->node, *fd); |
173af62f DG |
434 | |
435 | error: | |
436 | return socket; | |
437 | } | |
438 | ||
439 | /* | |
440 | * Add consumer socket to consumer output object. Read side lock must be | |
441 | * acquired before calling this function. | |
442 | */ | |
28ab034a | 443 | void consumer_add_socket(struct consumer_socket *sock, struct consumer_output *consumer) |
173af62f | 444 | { |
a0377dfe FD |
445 | LTTNG_ASSERT(sock); |
446 | LTTNG_ASSERT(consumer); | |
48b7cdc2 | 447 | ASSERT_RCU_READ_LOCKED(); |
173af62f DG |
448 | |
449 | lttng_ht_add_unique_ulong(consumer->socks, &sock->node); | |
450 | } | |
451 | ||
452 | /* | |
348a81dc | 453 | * Delete consumer socket to consumer output object. Read side lock must be |
173af62f DG |
454 | * acquired before calling this function. |
455 | */ | |
28ab034a | 456 | void consumer_del_socket(struct consumer_socket *sock, struct consumer_output *consumer) |
173af62f DG |
457 | { |
458 | int ret; | |
459 | struct lttng_ht_iter iter; | |
460 | ||
a0377dfe FD |
461 | LTTNG_ASSERT(sock); |
462 | LTTNG_ASSERT(consumer); | |
48b7cdc2 | 463 | ASSERT_RCU_READ_LOCKED(); |
173af62f DG |
464 | |
465 | iter.iter.node = &sock->node.node; | |
466 | ret = lttng_ht_del(consumer->socks, &iter); | |
a0377dfe | 467 | LTTNG_ASSERT(!ret); |
173af62f DG |
468 | } |
469 | ||
470 | /* | |
471 | * RCU destroy call function. | |
472 | */ | |
473 | static void destroy_socket_rcu(struct rcu_head *head) | |
474 | { | |
475 | struct lttng_ht_node_ulong *node = | |
0114db0e | 476 | lttng::utils::container_of(head, <tng_ht_node_ulong::head); |
28ab034a | 477 | struct consumer_socket *socket = lttng::utils::container_of(node, &consumer_socket::node); |
173af62f DG |
478 | |
479 | free(socket); | |
480 | } | |
481 | ||
482 | /* | |
48b7cdc2 FD |
483 | * Destroy and free socket pointer in a call RCU. The call must either: |
484 | * - have acquired the read side lock before calling this function, or | |
485 | * - guarantee the validity of the `struct consumer_socket` object for the | |
486 | * duration of the call. | |
173af62f DG |
487 | */ |
488 | void consumer_destroy_socket(struct consumer_socket *sock) | |
489 | { | |
a0377dfe | 490 | LTTNG_ASSERT(sock); |
173af62f DG |
491 | |
492 | /* | |
493 | * We DO NOT close the file descriptor here since it is global to the | |
2f77fc4b DG |
494 | * session daemon and is closed only if the consumer dies or a custom |
495 | * consumer was registered, | |
173af62f | 496 | */ |
2f77fc4b | 497 | if (sock->registered) { |
9363801e DG |
498 | DBG3("Consumer socket was registered. Closing fd %d", *sock->fd_ptr); |
499 | lttcomm_close_unix_sock(*sock->fd_ptr); | |
2f77fc4b | 500 | } |
173af62f DG |
501 | |
502 | call_rcu(&sock->node.head, destroy_socket_rcu); | |
503 | } | |
504 | ||
00e2e675 DG |
505 | /* |
506 | * Allocate and assign data to a consumer_output object. | |
507 | * | |
508 | * Return pointer to structure. | |
509 | */ | |
510 | struct consumer_output *consumer_create_output(enum consumer_dst_type type) | |
511 | { | |
cd9adb8b | 512 | struct consumer_output *output = nullptr; |
00e2e675 | 513 | |
64803277 | 514 | output = zmalloc<consumer_output>(); |
cd9adb8b | 515 | if (output == nullptr) { |
00e2e675 DG |
516 | PERROR("zmalloc consumer_output"); |
517 | goto error; | |
518 | } | |
519 | ||
520 | /* By default, consumer output is enabled */ | |
66cefebd | 521 | output->enabled = true; |
00e2e675 | 522 | output->type = type; |
d88aee68 | 523 | output->net_seq_index = (uint64_t) -1ULL; |
6addfa37 | 524 | urcu_ref_init(&output->ref); |
173af62f DG |
525 | |
526 | output->socks = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG); | |
00e2e675 DG |
527 | |
528 | error: | |
529 | return output; | |
530 | } | |
531 | ||
af706bb7 DG |
532 | /* |
533 | * Iterate over the consumer output socket hash table and destroy them. The | |
534 | * socket file descriptor are only closed if the consumer output was | |
535 | * registered meaning it's an external consumer. | |
536 | */ | |
537 | void consumer_destroy_output_sockets(struct consumer_output *obj) | |
538 | { | |
539 | struct lttng_ht_iter iter; | |
540 | struct consumer_socket *socket; | |
541 | ||
542 | if (!obj->socks) { | |
543 | return; | |
544 | } | |
545 | ||
56047f5a | 546 | { |
07c4863f | 547 | const lttng::urcu::read_lock_guard read_lock; |
56047f5a JG |
548 | |
549 | cds_lfht_for_each_entry (obj->socks->ht, &iter.iter, socket, node.node) { | |
550 | consumer_del_socket(socket, obj); | |
551 | consumer_destroy_socket(socket); | |
552 | } | |
af706bb7 | 553 | } |
af706bb7 DG |
554 | } |
555 | ||
00e2e675 DG |
556 | /* |
557 | * Delete the consumer_output object from the list and free the ptr. | |
558 | */ | |
6addfa37 | 559 | static void consumer_release_output(struct urcu_ref *ref) |
00e2e675 | 560 | { |
28ab034a | 561 | struct consumer_output *obj = lttng::utils::container_of(ref, &consumer_output::ref); |
00e2e675 | 562 | |
af706bb7 | 563 | consumer_destroy_output_sockets(obj); |
2f77fc4b | 564 | |
af706bb7 | 565 | if (obj->socks) { |
2f77fc4b | 566 | /* Finally destroy HT */ |
3c339053 | 567 | lttng_ht_destroy(obj->socks); |
00e2e675 | 568 | } |
173af62f | 569 | |
00e2e675 DG |
570 | free(obj); |
571 | } | |
572 | ||
6addfa37 MD |
573 | /* |
574 | * Get the consumer_output object. | |
575 | */ | |
576 | void consumer_output_get(struct consumer_output *obj) | |
577 | { | |
578 | urcu_ref_get(&obj->ref); | |
579 | } | |
580 | ||
581 | /* | |
582 | * Put the consumer_output object. | |
6addfa37 MD |
583 | */ |
584 | void consumer_output_put(struct consumer_output *obj) | |
585 | { | |
586 | if (!obj) { | |
587 | return; | |
588 | } | |
589 | urcu_ref_put(&obj->ref, consumer_release_output); | |
590 | } | |
591 | ||
00e2e675 DG |
592 | /* |
593 | * Copy consumer output and returned the newly allocated copy. | |
594 | */ | |
b178f53e | 595 | struct consumer_output *consumer_copy_output(struct consumer_output *src) |
00e2e675 | 596 | { |
6dc3064a | 597 | int ret; |
00e2e675 DG |
598 | struct consumer_output *output; |
599 | ||
a0377dfe | 600 | LTTNG_ASSERT(src); |
00e2e675 | 601 | |
b178f53e | 602 | output = consumer_create_output(src->type); |
cd9adb8b | 603 | if (output == nullptr) { |
6addfa37 | 604 | goto end; |
00e2e675 | 605 | } |
b178f53e JG |
606 | output->enabled = src->enabled; |
607 | output->net_seq_index = src->net_seq_index; | |
28ab034a | 608 | memcpy(output->domain_subdir, src->domain_subdir, sizeof(output->domain_subdir)); |
b178f53e JG |
609 | output->snapshot = src->snapshot; |
610 | output->relay_major_version = src->relay_major_version; | |
611 | output->relay_minor_version = src->relay_minor_version; | |
eacb7b6f | 612 | output->relay_allows_clear = src->relay_allows_clear; |
b178f53e JG |
613 | memcpy(&output->dst, &src->dst, sizeof(output->dst)); |
614 | ret = consumer_copy_sockets(output, src); | |
6dc3064a | 615 | if (ret < 0) { |
6addfa37 | 616 | goto error_put; |
6dc3064a | 617 | } |
6addfa37 | 618 | end: |
6dc3064a DG |
619 | return output; |
620 | ||
6addfa37 MD |
621 | error_put: |
622 | consumer_output_put(output); | |
cd9adb8b | 623 | return nullptr; |
6dc3064a DG |
624 | } |
625 | ||
626 | /* | |
627 | * Copy consumer sockets from src to dst. | |
628 | * | |
629 | * Return 0 on success or else a negative value. | |
630 | */ | |
28ab034a | 631 | int consumer_copy_sockets(struct consumer_output *dst, struct consumer_output *src) |
6dc3064a DG |
632 | { |
633 | int ret = 0; | |
634 | struct lttng_ht_iter iter; | |
635 | struct consumer_socket *socket, *copy_sock; | |
636 | ||
a0377dfe FD |
637 | LTTNG_ASSERT(dst); |
638 | LTTNG_ASSERT(src); | |
6dc3064a | 639 | |
56047f5a | 640 | { |
07c4863f | 641 | const lttng::urcu::read_lock_guard read_lock; |
6dc3064a | 642 | |
56047f5a JG |
643 | cds_lfht_for_each_entry (src->socks->ht, &iter.iter, socket, node.node) { |
644 | /* Ignore socket that are already there. */ | |
645 | copy_sock = consumer_find_socket(*socket->fd_ptr, dst); | |
646 | if (copy_sock) { | |
647 | continue; | |
648 | } | |
173af62f | 649 | |
56047f5a JG |
650 | /* Create new socket object. */ |
651 | copy_sock = consumer_allocate_socket(socket->fd_ptr); | |
652 | if (copy_sock == nullptr) { | |
653 | ret = -ENOMEM; | |
654 | goto error; | |
655 | } | |
656 | ||
657 | copy_sock->registered = socket->registered; | |
658 | /* | |
659 | * This is valid because this lock is shared accross all consumer | |
660 | * object being the global lock of the consumer data structure of the | |
661 | * session daemon. | |
662 | */ | |
663 | copy_sock->lock = socket->lock; | |
664 | consumer_add_socket(copy_sock, dst); | |
665 | } | |
173af62f DG |
666 | } |
667 | ||
00e2e675 | 668 | error: |
6dc3064a | 669 | return ret; |
00e2e675 DG |
670 | } |
671 | ||
672 | /* | |
b178f53e | 673 | * Set network URI to the consumer output. |
00e2e675 | 674 | * |
ad20f474 DG |
675 | * Return 0 on success. Return 1 if the URI were equal. Else, negative value on |
676 | * error. | |
00e2e675 | 677 | */ |
a0a4f314 | 678 | int consumer_set_network_uri(const ltt_session::locked_ref& session, |
28ab034a JG |
679 | struct consumer_output *output, |
680 | struct lttng_uri *uri) | |
00e2e675 DG |
681 | { |
682 | int ret; | |
cd9adb8b | 683 | struct lttng_uri *dst_uri = nullptr; |
00e2e675 DG |
684 | |
685 | /* Code flow error safety net. */ | |
a0377dfe FD |
686 | LTTNG_ASSERT(output); |
687 | LTTNG_ASSERT(uri); | |
00e2e675 DG |
688 | |
689 | switch (uri->stype) { | |
690 | case LTTNG_STREAM_CONTROL: | |
b178f53e JG |
691 | dst_uri = &output->dst.net.control; |
692 | output->dst.net.control_isset = 1; | |
00e2e675 DG |
693 | if (uri->port == 0) { |
694 | /* Assign default port. */ | |
695 | uri->port = DEFAULT_NETWORK_CONTROL_PORT; | |
a74934ba | 696 | } else { |
28ab034a | 697 | if (output->dst.net.data_isset && uri->port == output->dst.net.data.port) { |
a74934ba DG |
698 | ret = -LTTNG_ERR_INVALID; |
699 | goto error; | |
700 | } | |
00e2e675 | 701 | } |
ad20f474 | 702 | DBG3("Consumer control URI set with port %d", uri->port); |
00e2e675 DG |
703 | break; |
704 | case LTTNG_STREAM_DATA: | |
b178f53e JG |
705 | dst_uri = &output->dst.net.data; |
706 | output->dst.net.data_isset = 1; | |
00e2e675 DG |
707 | if (uri->port == 0) { |
708 | /* Assign default port. */ | |
709 | uri->port = DEFAULT_NETWORK_DATA_PORT; | |
a74934ba | 710 | } else { |
28ab034a JG |
711 | if (output->dst.net.control_isset && |
712 | uri->port == output->dst.net.control.port) { | |
a74934ba DG |
713 | ret = -LTTNG_ERR_INVALID; |
714 | goto error; | |
715 | } | |
00e2e675 | 716 | } |
ad20f474 | 717 | DBG3("Consumer data URI set with port %d", uri->port); |
00e2e675 DG |
718 | break; |
719 | default: | |
720 | ERR("Set network uri type unknown %d", uri->stype); | |
a74934ba | 721 | ret = -LTTNG_ERR_INVALID; |
00e2e675 DG |
722 | goto error; |
723 | } | |
724 | ||
725 | ret = uri_compare(dst_uri, uri); | |
726 | if (!ret) { | |
727 | /* Same URI, don't touch it and return success. */ | |
728 | DBG3("URI network compare are the same"); | |
ad20f474 | 729 | goto equal; |
00e2e675 DG |
730 | } |
731 | ||
732 | /* URIs were not equal, replacing it. */ | |
00e2e675 | 733 | memcpy(dst_uri, uri, sizeof(struct lttng_uri)); |
b178f53e JG |
734 | output->type = CONSUMER_DST_NET; |
735 | if (dst_uri->stype != LTTNG_STREAM_CONTROL) { | |
736 | /* Only the control uri needs to contain the path. */ | |
737 | goto end; | |
738 | } | |
00e2e675 | 739 | |
b178f53e JG |
740 | /* |
741 | * If the user has specified a subdir as part of the control | |
742 | * URL, the session's base output directory is: | |
743 | * /RELAYD_OUTPUT_PATH/HOSTNAME/USER_SPECIFIED_DIR | |
744 | * | |
745 | * Hence, the "base_dir" from which all stream files and | |
746 | * session rotation chunks are created takes the form | |
747 | * /HOSTNAME/USER_SPECIFIED_DIR | |
748 | * | |
749 | * If the user has not specified an output directory as part of | |
750 | * the control URL, the base output directory has the form: | |
751 | * /RELAYD_OUTPUT_PATH/HOSTNAME/SESSION_NAME-CREATION_TIME | |
752 | * | |
753 | * Hence, the "base_dir" from which all stream files and | |
754 | * session rotation chunks are created takes the form | |
755 | * /HOSTNAME/SESSION_NAME-CREATION_TIME | |
756 | * | |
757 | * Note that automatically generated session names already | |
758 | * contain the session's creation time. In that case, the | |
759 | * creation time is omitted to prevent it from being duplicated | |
760 | * in the final directory hierarchy. | |
761 | */ | |
762 | if (*uri->subdir) { | |
763 | if (strstr(uri->subdir, "../")) { | |
764 | ERR("Network URI subdirs are not allowed to walk up the path hierarchy"); | |
765 | ret = -LTTNG_ERR_INVALID; | |
00e2e675 DG |
766 | goto error; |
767 | } | |
b178f53e | 768 | ret = snprintf(output->dst.net.base_dir, |
28ab034a JG |
769 | sizeof(output->dst.net.base_dir), |
770 | "/%s/%s/", | |
771 | session->hostname, | |
772 | uri->subdir); | |
b178f53e JG |
773 | } else { |
774 | if (session->has_auto_generated_name) { | |
775 | ret = snprintf(output->dst.net.base_dir, | |
28ab034a JG |
776 | sizeof(output->dst.net.base_dir), |
777 | "/%s/%s/", | |
778 | session->hostname, | |
779 | session->name); | |
b178f53e JG |
780 | } else { |
781 | char session_creation_datetime[16]; | |
782 | size_t strftime_ret; | |
783 | struct tm *timeinfo; | |
00e2e675 | 784 | |
b178f53e JG |
785 | timeinfo = localtime(&session->creation_time); |
786 | if (!timeinfo) { | |
787 | ret = -LTTNG_ERR_FATAL; | |
788 | goto error; | |
789 | } | |
790 | strftime_ret = strftime(session_creation_datetime, | |
28ab034a JG |
791 | sizeof(session_creation_datetime), |
792 | "%Y%m%d-%H%M%S", | |
793 | timeinfo); | |
b178f53e JG |
794 | if (strftime_ret == 0) { |
795 | ERR("Failed to format session creation timestamp while setting network URI"); | |
796 | ret = -LTTNG_ERR_FATAL; | |
797 | goto error; | |
798 | } | |
799 | ret = snprintf(output->dst.net.base_dir, | |
28ab034a JG |
800 | sizeof(output->dst.net.base_dir), |
801 | "/%s/%s-%s/", | |
802 | session->hostname, | |
803 | session->name, | |
804 | session_creation_datetime); | |
bfc6eff0 | 805 | } |
00e2e675 | 806 | } |
b178f53e JG |
807 | if (ret >= sizeof(output->dst.net.base_dir)) { |
808 | ret = -LTTNG_ERR_INVALID; | |
809 | ERR("Truncation occurred while setting network output base directory"); | |
810 | goto error; | |
811 | } else if (ret == -1) { | |
812 | ret = -LTTNG_ERR_INVALID; | |
813 | PERROR("Error occurred while setting network output base directory"); | |
814 | goto error; | |
815 | } | |
816 | ||
28ab034a | 817 | DBG3("Consumer set network uri base_dir path %s", output->dst.net.base_dir); |
00e2e675 | 818 | |
b178f53e | 819 | end: |
00e2e675 | 820 | return 0; |
ad20f474 DG |
821 | equal: |
822 | return 1; | |
00e2e675 | 823 | error: |
a74934ba | 824 | return ret; |
00e2e675 DG |
825 | } |
826 | ||
827 | /* | |
828 | * Send file descriptor to consumer via sock. | |
9a318688 JG |
829 | * |
830 | * The consumer socket lock must be held by the caller. | |
00e2e675 | 831 | */ |
28ab034a | 832 | int consumer_send_fds(struct consumer_socket *sock, const int *fds, size_t nb_fd) |
00e2e675 DG |
833 | { |
834 | int ret; | |
835 | ||
a0377dfe FD |
836 | LTTNG_ASSERT(fds); |
837 | LTTNG_ASSERT(sock); | |
838 | LTTNG_ASSERT(nb_fd > 0); | |
839 | LTTNG_ASSERT(pthread_mutex_trylock(sock->lock) == EBUSY); | |
00e2e675 | 840 | |
9363801e | 841 | ret = lttcomm_send_fds_unix_sock(*sock->fd_ptr, fds, nb_fd); |
00e2e675 | 842 | if (ret < 0) { |
3448e266 | 843 | /* The above call will print a PERROR on error. */ |
9363801e | 844 | DBG("Error when sending consumer fds on sock %d", *sock->fd_ptr); |
00e2e675 DG |
845 | goto error; |
846 | } | |
847 | ||
f50f23d9 | 848 | ret = consumer_recv_status_reply(sock); |
00e2e675 DG |
849 | error: |
850 | return ret; | |
851 | } | |
852 | ||
ffe60014 DG |
853 | /* |
854 | * Consumer send communication message structure to consumer. | |
9a318688 JG |
855 | * |
856 | * The consumer socket lock must be held by the caller. | |
ffe60014 | 857 | */ |
28ab034a | 858 | int consumer_send_msg(struct consumer_socket *sock, const struct lttcomm_consumer_msg *msg) |
ffe60014 DG |
859 | { |
860 | int ret; | |
861 | ||
a0377dfe FD |
862 | LTTNG_ASSERT(msg); |
863 | LTTNG_ASSERT(sock); | |
864 | LTTNG_ASSERT(pthread_mutex_trylock(sock->lock) == EBUSY); | |
ffe60014 | 865 | |
52898cb1 | 866 | ret = consumer_socket_send(sock, msg, sizeof(struct lttcomm_consumer_msg)); |
ffe60014 | 867 | if (ret < 0) { |
ffe60014 DG |
868 | goto error; |
869 | } | |
870 | ||
871 | ret = consumer_recv_status_reply(sock); | |
872 | ||
873 | error: | |
874 | return ret; | |
875 | } | |
876 | ||
00e2e675 DG |
877 | /* |
878 | * Consumer send channel communication message structure to consumer. | |
9a318688 JG |
879 | * |
880 | * The consumer socket lock must be held by the caller. | |
00e2e675 | 881 | */ |
28ab034a | 882 | int consumer_send_channel(struct consumer_socket *sock, struct lttcomm_consumer_msg *msg) |
00e2e675 DG |
883 | { |
884 | int ret; | |
885 | ||
a0377dfe FD |
886 | LTTNG_ASSERT(msg); |
887 | LTTNG_ASSERT(sock); | |
00e2e675 | 888 | |
52898cb1 | 889 | ret = consumer_send_msg(sock, msg); |
00e2e675 | 890 | if (ret < 0) { |
00e2e675 DG |
891 | goto error; |
892 | } | |
893 | ||
894 | error: | |
895 | return ret; | |
896 | } | |
897 | ||
ffe60014 DG |
898 | /* |
899 | * Populate the given consumer msg structure with the ask_channel command | |
900 | * information. | |
901 | */ | |
902 | void consumer_init_ask_channel_comm_msg(struct lttcomm_consumer_msg *msg, | |
28ab034a JG |
903 | uint64_t subbuf_size, |
904 | uint64_t num_subbuf, | |
905 | int overwrite, | |
906 | unsigned int switch_timer_interval, | |
907 | unsigned int read_timer_interval, | |
908 | unsigned int live_timer_interval, | |
909 | bool is_in_live_session, | |
910 | unsigned int monitor_timer_interval, | |
911 | int output, | |
912 | int type, | |
913 | uint64_t session_id, | |
914 | const char *pathname, | |
915 | const char *name, | |
916 | uint64_t relayd_id, | |
917 | uint64_t key, | |
918 | const lttng_uuid& uuid, | |
919 | uint32_t chan_id, | |
920 | uint64_t tracefile_size, | |
921 | uint64_t tracefile_count, | |
922 | uint64_t session_id_per_pid, | |
923 | unsigned int monitor, | |
924 | uint32_t ust_app_uid, | |
925 | int64_t blocking_timeout, | |
926 | const char *root_shm_path, | |
927 | const char *shm_path, | |
928 | struct lttng_trace_chunk *trace_chunk, | |
929 | const struct lttng_credentials *buffer_credentials) | |
ffe60014 | 930 | { |
a0377dfe | 931 | LTTNG_ASSERT(msg); |
ffe60014 | 932 | |
26c468bb | 933 | /* Zeroed structure */ |
ffe60014 | 934 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); |
d2956687 JG |
935 | msg->u.ask_channel.buffer_credentials.uid = UINT32_MAX; |
936 | msg->u.ask_channel.buffer_credentials.gid = UINT32_MAX; | |
937 | ||
26c468bb | 938 | if (trace_chunk) { |
d2956687 JG |
939 | uint64_t chunk_id; |
940 | enum lttng_trace_chunk_status chunk_status; | |
d2956687 JG |
941 | |
942 | chunk_status = lttng_trace_chunk_get_id(trace_chunk, &chunk_id); | |
a0377dfe | 943 | LTTNG_ASSERT(chunk_status == LTTNG_TRACE_CHUNK_STATUS_OK); |
d2956687 | 944 | LTTNG_OPTIONAL_SET(&msg->u.ask_channel.chunk_id, chunk_id); |
26c468bb | 945 | } |
28ab034a JG |
946 | msg->u.ask_channel.buffer_credentials.uid = lttng_credentials_get_uid(buffer_credentials); |
947 | msg->u.ask_channel.buffer_credentials.gid = lttng_credentials_get_gid(buffer_credentials); | |
ffe60014 DG |
948 | |
949 | msg->cmd_type = LTTNG_CONSUMER_ASK_CHANNEL_CREATION; | |
950 | msg->u.ask_channel.subbuf_size = subbuf_size; | |
28ab034a | 951 | msg->u.ask_channel.num_subbuf = num_subbuf; |
ffe60014 DG |
952 | msg->u.ask_channel.overwrite = overwrite; |
953 | msg->u.ask_channel.switch_timer_interval = switch_timer_interval; | |
954 | msg->u.ask_channel.read_timer_interval = read_timer_interval; | |
ecc48a90 | 955 | msg->u.ask_channel.live_timer_interval = live_timer_interval; |
a2814ea7 | 956 | msg->u.ask_channel.is_live = is_in_live_session; |
e9404c27 | 957 | msg->u.ask_channel.monitor_timer_interval = monitor_timer_interval; |
ffe60014 DG |
958 | msg->u.ask_channel.output = output; |
959 | msg->u.ask_channel.type = type; | |
960 | msg->u.ask_channel.session_id = session_id; | |
1950109e | 961 | msg->u.ask_channel.session_id_per_pid = session_id_per_pid; |
ffe60014 DG |
962 | msg->u.ask_channel.relayd_id = relayd_id; |
963 | msg->u.ask_channel.key = key; | |
7972aab2 | 964 | msg->u.ask_channel.chan_id = chan_id; |
1624d5b7 JD |
965 | msg->u.ask_channel.tracefile_size = tracefile_size; |
966 | msg->u.ask_channel.tracefile_count = tracefile_count; | |
2bba9e53 | 967 | msg->u.ask_channel.monitor = monitor; |
567eb353 | 968 | msg->u.ask_channel.ust_app_uid = ust_app_uid; |
491d1539 | 969 | msg->u.ask_channel.blocking_timeout = blocking_timeout; |
ffe60014 | 970 | |
328c2fe7 | 971 | std::copy(uuid.begin(), uuid.end(), msg->u.ask_channel.uuid); |
ffe60014 | 972 | |
10a50311 | 973 | if (pathname) { |
28ab034a JG |
974 | strncpy(msg->u.ask_channel.pathname, pathname, sizeof(msg->u.ask_channel.pathname)); |
975 | msg->u.ask_channel.pathname[sizeof(msg->u.ask_channel.pathname) - 1] = '\0'; | |
10a50311 | 976 | } |
ffe60014 DG |
977 | |
978 | strncpy(msg->u.ask_channel.name, name, sizeof(msg->u.ask_channel.name)); | |
979 | msg->u.ask_channel.name[sizeof(msg->u.ask_channel.name) - 1] = '\0'; | |
d7ba1388 | 980 | |
3d071855 | 981 | if (root_shm_path) { |
28ab034a JG |
982 | strncpy(msg->u.ask_channel.root_shm_path, |
983 | root_shm_path, | |
3d071855 | 984 | sizeof(msg->u.ask_channel.root_shm_path)); |
28ab034a JG |
985 | msg->u.ask_channel.root_shm_path[sizeof(msg->u.ask_channel.root_shm_path) - 1] = |
986 | '\0'; | |
3d071855 | 987 | } |
d7ba1388 | 988 | if (shm_path) { |
28ab034a | 989 | strncpy(msg->u.ask_channel.shm_path, shm_path, sizeof(msg->u.ask_channel.shm_path)); |
d7ba1388 MD |
990 | msg->u.ask_channel.shm_path[sizeof(msg->u.ask_channel.shm_path) - 1] = '\0'; |
991 | } | |
ffe60014 DG |
992 | } |
993 | ||
00e2e675 DG |
994 | /* |
995 | * Init channel communication message structure. | |
996 | */ | |
638e7b4e | 997 | void consumer_init_add_channel_comm_msg(struct lttcomm_consumer_msg *msg, |
28ab034a JG |
998 | uint64_t channel_key, |
999 | uint64_t session_id, | |
1000 | const char *pathname, | |
1001 | uint64_t relayd_id, | |
1002 | const char *name, | |
1003 | unsigned int nb_init_streams, | |
1004 | enum lttng_event_output output, | |
1005 | int type, | |
1006 | uint64_t tracefile_size, | |
1007 | uint64_t tracefile_count, | |
1008 | unsigned int monitor, | |
1009 | unsigned int live_timer_interval, | |
1010 | bool is_in_live_session, | |
1011 | unsigned int monitor_timer_interval, | |
1012 | struct lttng_trace_chunk *trace_chunk) | |
00e2e675 | 1013 | { |
a0377dfe | 1014 | LTTNG_ASSERT(msg); |
00e2e675 | 1015 | |
00e2e675 DG |
1016 | /* Zeroed structure */ |
1017 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
1018 | ||
26c468bb | 1019 | if (trace_chunk) { |
d2956687 JG |
1020 | uint64_t chunk_id; |
1021 | enum lttng_trace_chunk_status chunk_status; | |
1022 | ||
1023 | chunk_status = lttng_trace_chunk_get_id(trace_chunk, &chunk_id); | |
a0377dfe | 1024 | LTTNG_ASSERT(chunk_status == LTTNG_TRACE_CHUNK_STATUS_OK); |
d2956687 | 1025 | LTTNG_OPTIONAL_SET(&msg->u.channel.chunk_id, chunk_id); |
26c468bb | 1026 | } |
d2956687 | 1027 | |
00e2e675 | 1028 | /* Send channel */ |
638e7b4e | 1029 | msg->cmd_type = LTTNG_CONSUMER_ADD_CHANNEL; |
00e2e675 | 1030 | msg->u.channel.channel_key = channel_key; |
ffe60014 | 1031 | msg->u.channel.session_id = session_id; |
ffe60014 | 1032 | msg->u.channel.relayd_id = relayd_id; |
c30aaa51 | 1033 | msg->u.channel.nb_init_streams = nb_init_streams; |
ffe60014 DG |
1034 | msg->u.channel.output = output; |
1035 | msg->u.channel.type = type; | |
1624d5b7 JD |
1036 | msg->u.channel.tracefile_size = tracefile_size; |
1037 | msg->u.channel.tracefile_count = tracefile_count; | |
2bba9e53 | 1038 | msg->u.channel.monitor = monitor; |
ecc48a90 | 1039 | msg->u.channel.live_timer_interval = live_timer_interval; |
a2814ea7 | 1040 | msg->u.channel.is_live = is_in_live_session; |
e9404c27 | 1041 | msg->u.channel.monitor_timer_interval = monitor_timer_interval; |
ffe60014 | 1042 | |
28ab034a | 1043 | strncpy(msg->u.channel.pathname, pathname, sizeof(msg->u.channel.pathname)); |
ffe60014 DG |
1044 | msg->u.channel.pathname[sizeof(msg->u.channel.pathname) - 1] = '\0'; |
1045 | ||
1046 | strncpy(msg->u.channel.name, name, sizeof(msg->u.channel.name)); | |
1047 | msg->u.channel.name[sizeof(msg->u.channel.name) - 1] = '\0'; | |
00e2e675 DG |
1048 | } |
1049 | ||
1050 | /* | |
1051 | * Init stream communication message structure. | |
1052 | */ | |
e098433c | 1053 | void consumer_init_add_stream_comm_msg(struct lttcomm_consumer_msg *msg, |
28ab034a JG |
1054 | uint64_t channel_key, |
1055 | uint64_t stream_key, | |
1056 | int32_t cpu) | |
00e2e675 | 1057 | { |
a0377dfe | 1058 | LTTNG_ASSERT(msg); |
00e2e675 DG |
1059 | |
1060 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
1061 | ||
e098433c | 1062 | msg->cmd_type = LTTNG_CONSUMER_ADD_STREAM; |
00e2e675 DG |
1063 | msg->u.stream.channel_key = channel_key; |
1064 | msg->u.stream.stream_key = stream_key; | |
ffe60014 | 1065 | msg->u.stream.cpu = cpu; |
00e2e675 DG |
1066 | } |
1067 | ||
a4baae1b | 1068 | void consumer_init_streams_sent_comm_msg(struct lttcomm_consumer_msg *msg, |
28ab034a JG |
1069 | enum lttng_consumer_command cmd, |
1070 | uint64_t channel_key, | |
1071 | uint64_t net_seq_idx) | |
a4baae1b | 1072 | { |
a0377dfe | 1073 | LTTNG_ASSERT(msg); |
a4baae1b JD |
1074 | |
1075 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
1076 | ||
1077 | msg->cmd_type = cmd; | |
1078 | msg->u.sent_streams.channel_key = channel_key; | |
1079 | msg->u.sent_streams.net_seq_idx = net_seq_idx; | |
1080 | } | |
1081 | ||
00e2e675 DG |
1082 | /* |
1083 | * Send stream communication structure to the consumer. | |
1084 | */ | |
f50f23d9 | 1085 | int consumer_send_stream(struct consumer_socket *sock, |
28ab034a JG |
1086 | struct consumer_output *dst, |
1087 | struct lttcomm_consumer_msg *msg, | |
1088 | const int *fds, | |
1089 | size_t nb_fd) | |
00e2e675 DG |
1090 | { |
1091 | int ret; | |
1092 | ||
a0377dfe FD |
1093 | LTTNG_ASSERT(msg); |
1094 | LTTNG_ASSERT(dst); | |
1095 | LTTNG_ASSERT(sock); | |
1096 | LTTNG_ASSERT(fds); | |
00e2e675 | 1097 | |
52898cb1 | 1098 | ret = consumer_send_msg(sock, msg); |
f50f23d9 DG |
1099 | if (ret < 0) { |
1100 | goto error; | |
1101 | } | |
1102 | ||
00e2e675 DG |
1103 | ret = consumer_send_fds(sock, fds, nb_fd); |
1104 | if (ret < 0) { | |
1105 | goto error; | |
1106 | } | |
1107 | ||
1108 | error: | |
1109 | return ret; | |
1110 | } | |
37278a1e DG |
1111 | |
1112 | /* | |
1113 | * Send relayd socket to consumer associated with a session name. | |
1114 | * | |
43fade62 JG |
1115 | * The consumer socket lock must be held by the caller. |
1116 | * | |
37278a1e DG |
1117 | * On success return positive value. On error, negative value. |
1118 | */ | |
f50f23d9 | 1119 | int consumer_send_relayd_socket(struct consumer_socket *consumer_sock, |
28ab034a JG |
1120 | struct lttcomm_relayd_sock *rsock, |
1121 | struct consumer_output *consumer, | |
1122 | enum lttng_stream_type type, | |
1123 | uint64_t session_id, | |
1124 | const char *session_name, | |
1125 | const char *hostname, | |
1126 | const char *base_path, | |
1127 | int session_live_timer, | |
1128 | const uint64_t *current_chunk_id, | |
1129 | time_t session_creation_time, | |
1130 | bool session_name_contains_creation_time) | |
37278a1e DG |
1131 | { |
1132 | int ret; | |
7966af57 | 1133 | int fd; |
37278a1e DG |
1134 | struct lttcomm_consumer_msg msg; |
1135 | ||
1136 | /* Code flow error. Safety net. */ | |
a0377dfe FD |
1137 | LTTNG_ASSERT(rsock); |
1138 | LTTNG_ASSERT(consumer); | |
1139 | LTTNG_ASSERT(consumer_sock); | |
37278a1e | 1140 | |
53efb85a | 1141 | memset(&msg, 0, sizeof(msg)); |
37278a1e DG |
1142 | /* Bail out if consumer is disabled */ |
1143 | if (!consumer->enabled) { | |
f73fabfd | 1144 | ret = LTTNG_OK; |
37278a1e DG |
1145 | goto error; |
1146 | } | |
1147 | ||
d3e2ba59 | 1148 | if (type == LTTNG_STREAM_CONTROL) { |
ecd1a12f | 1149 | char output_path[LTTNG_PATH_MAX] = {}; |
07aa2e42 | 1150 | uint64_t relayd_session_id; |
ecd1a12f | 1151 | |
28ab034a JG |
1152 | ret = relayd_create_session(rsock, |
1153 | &relayd_session_id, | |
1154 | session_name, | |
1155 | hostname, | |
1156 | base_path, | |
1157 | session_live_timer, | |
1158 | consumer->snapshot, | |
1159 | session_id, | |
1160 | the_sessiond_uuid, | |
1161 | current_chunk_id, | |
1162 | session_creation_time, | |
1163 | session_name_contains_creation_time, | |
1164 | output_path); | |
d3e2ba59 JD |
1165 | if (ret < 0) { |
1166 | /* Close the control socket. */ | |
1167 | (void) relayd_close(rsock); | |
1168 | goto error; | |
1169 | } | |
07aa2e42 | 1170 | msg.u.relayd_sock.relayd_session_id = relayd_session_id; |
28ab034a | 1171 | DBG("Created session on relay, output path reply: %s", output_path); |
d3e2ba59 JD |
1172 | } |
1173 | ||
37278a1e DG |
1174 | msg.cmd_type = LTTNG_CONSUMER_ADD_RELAYD_SOCKET; |
1175 | /* | |
1176 | * Assign network consumer output index using the temporary consumer since | |
1177 | * this call should only be made from within a set_consumer_uri() function | |
1178 | * call in the session daemon. | |
1179 | */ | |
1180 | msg.u.relayd_sock.net_index = consumer->net_seq_index; | |
1181 | msg.u.relayd_sock.type = type; | |
46e6455f | 1182 | msg.u.relayd_sock.session_id = session_id; |
4222116f JR |
1183 | msg.u.relayd_sock.major = rsock->major; |
1184 | msg.u.relayd_sock.minor = rsock->minor; | |
1185 | msg.u.relayd_sock.relayd_socket_protocol = rsock->sock.proto; | |
37278a1e | 1186 | |
9363801e | 1187 | DBG3("Sending relayd sock info to consumer on %d", *consumer_sock->fd_ptr); |
52898cb1 | 1188 | ret = consumer_send_msg(consumer_sock, &msg); |
f50f23d9 DG |
1189 | if (ret < 0) { |
1190 | goto error; | |
1191 | } | |
1192 | ||
37278a1e | 1193 | DBG3("Sending relayd socket file descriptor to consumer"); |
7966af57 SM |
1194 | fd = rsock->sock.fd; |
1195 | ret = consumer_send_fds(consumer_sock, &fd, 1); | |
37278a1e DG |
1196 | if (ret < 0) { |
1197 | goto error; | |
1198 | } | |
1199 | ||
1200 | DBG2("Consumer relayd socket sent"); | |
1201 | ||
1202 | error: | |
1203 | return ret; | |
1204 | } | |
173af62f | 1205 | |
28ab034a JG |
1206 | static int |
1207 | consumer_send_pipe(struct consumer_socket *consumer_sock, enum lttng_consumer_command cmd, int pipe) | |
e9404c27 JG |
1208 | { |
1209 | int ret; | |
1210 | struct lttcomm_consumer_msg msg; | |
62c43103 JD |
1211 | const char *pipe_name; |
1212 | const char *command_name; | |
1213 | ||
1214 | switch (cmd) { | |
1215 | case LTTNG_CONSUMER_SET_CHANNEL_MONITOR_PIPE: | |
1216 | pipe_name = "channel monitor"; | |
1217 | command_name = "SET_CHANNEL_MONITOR_PIPE"; | |
1218 | break; | |
62c43103 | 1219 | default: |
28ab034a | 1220 | ERR("Unexpected command received in %s (cmd = %d)", __func__, (int) cmd); |
62c43103 JD |
1221 | abort(); |
1222 | } | |
e9404c27 JG |
1223 | |
1224 | /* Code flow error. Safety net. */ | |
1225 | ||
1226 | memset(&msg, 0, sizeof(msg)); | |
62c43103 | 1227 | msg.cmd_type = cmd; |
e9404c27 | 1228 | |
3e4dc117 | 1229 | pthread_mutex_lock(consumer_sock->lock); |
62c43103 | 1230 | DBG3("Sending %s command to consumer", command_name); |
e9404c27 JG |
1231 | ret = consumer_send_msg(consumer_sock, &msg); |
1232 | if (ret < 0) { | |
1233 | goto error; | |
1234 | } | |
1235 | ||
28ab034a | 1236 | DBG3("Sending %s pipe %d to consumer on socket %d", pipe_name, pipe, *consumer_sock->fd_ptr); |
e9404c27 JG |
1237 | ret = consumer_send_fds(consumer_sock, &pipe, 1); |
1238 | if (ret < 0) { | |
1239 | goto error; | |
1240 | } | |
1241 | ||
62c43103 | 1242 | DBG2("%s pipe successfully sent", pipe_name); |
e9404c27 | 1243 | error: |
3e4dc117 | 1244 | pthread_mutex_unlock(consumer_sock->lock); |
e9404c27 JG |
1245 | return ret; |
1246 | } | |
1247 | ||
28ab034a | 1248 | int consumer_send_channel_monitor_pipe(struct consumer_socket *consumer_sock, int pipe) |
62c43103 | 1249 | { |
28ab034a | 1250 | return consumer_send_pipe(consumer_sock, LTTNG_CONSUMER_SET_CHANNEL_MONITOR_PIPE, pipe); |
62c43103 JD |
1251 | } |
1252 | ||
806e2684 | 1253 | /* |
5e280d77 MD |
1254 | * Ask the consumer if the data is pending for the specific session id. |
1255 | * Returns 1 if data is pending, 0 otherwise, or < 0 on error. | |
806e2684 | 1256 | */ |
28ab034a | 1257 | int consumer_is_data_pending(uint64_t session_id, struct consumer_output *consumer) |
806e2684 DG |
1258 | { |
1259 | int ret; | |
28ab034a | 1260 | int32_t ret_code = 0; /* Default is that the data is NOT pending */ |
806e2684 DG |
1261 | struct consumer_socket *socket; |
1262 | struct lttng_ht_iter iter; | |
1263 | struct lttcomm_consumer_msg msg; | |
1264 | ||
a0377dfe | 1265 | LTTNG_ASSERT(consumer); |
806e2684 | 1266 | |
53efb85a | 1267 | DBG3("Consumer data pending for id %" PRIu64, session_id); |
806e2684 | 1268 | |
53efb85a MD |
1269 | memset(&msg, 0, sizeof(msg)); |
1270 | msg.cmd_type = LTTNG_CONSUMER_DATA_PENDING; | |
d88aee68 | 1271 | msg.u.data_pending.session_id = session_id; |
806e2684 | 1272 | |
56047f5a JG |
1273 | { |
1274 | /* Send command for each consumer. */ | |
07c4863f | 1275 | const lttng::urcu::read_lock_guard read_lock; |
806e2684 | 1276 | |
56047f5a JG |
1277 | cds_lfht_for_each_entry (consumer->socks->ht, &iter.iter, socket, node.node) { |
1278 | pthread_mutex_lock(socket->lock); | |
1279 | ret = consumer_socket_send(socket, &msg, sizeof(msg)); | |
1280 | if (ret < 0) { | |
1281 | pthread_mutex_unlock(socket->lock); | |
1282 | goto error_unlock; | |
1283 | } | |
1284 | ||
1285 | /* | |
1286 | * No need for a recv reply status because the answer to the command is | |
1287 | * the reply status message. | |
1288 | */ | |
1289 | ret = consumer_socket_recv(socket, &ret_code, sizeof(ret_code)); | |
1290 | if (ret < 0) { | |
1291 | pthread_mutex_unlock(socket->lock); | |
1292 | goto error_unlock; | |
1293 | } | |
f50f23d9 | 1294 | |
806e2684 | 1295 | pthread_mutex_unlock(socket->lock); |
806e2684 | 1296 | |
56047f5a JG |
1297 | if (ret_code == 1) { |
1298 | break; | |
1299 | } | |
806e2684 DG |
1300 | } |
1301 | } | |
1302 | ||
d88aee68 | 1303 | DBG("Consumer data is %s pending for session id %" PRIu64, |
28ab034a JG |
1304 | ret_code == 1 ? "" : "NOT", |
1305 | session_id); | |
806e2684 DG |
1306 | return ret_code; |
1307 | ||
b82c5c4d | 1308 | error_unlock: |
806e2684 DG |
1309 | return -1; |
1310 | } | |
7972aab2 DG |
1311 | |
1312 | /* | |
1313 | * Send a flush command to consumer using the given channel key. | |
1314 | * | |
1315 | * Return 0 on success else a negative value. | |
1316 | */ | |
1317 | int consumer_flush_channel(struct consumer_socket *socket, uint64_t key) | |
1318 | { | |
1319 | int ret; | |
1320 | struct lttcomm_consumer_msg msg; | |
1321 | ||
a0377dfe | 1322 | LTTNG_ASSERT(socket); |
7972aab2 DG |
1323 | |
1324 | DBG2("Consumer flush channel key %" PRIu64, key); | |
1325 | ||
53efb85a | 1326 | memset(&msg, 0, sizeof(msg)); |
7972aab2 DG |
1327 | msg.cmd_type = LTTNG_CONSUMER_FLUSH_CHANNEL; |
1328 | msg.u.flush_channel.key = key; | |
1329 | ||
1330 | pthread_mutex_lock(socket->lock); | |
1331 | health_code_update(); | |
1332 | ||
1333 | ret = consumer_send_msg(socket, &msg); | |
1334 | if (ret < 0) { | |
1335 | goto end; | |
1336 | } | |
1337 | ||
1338 | end: | |
1339 | health_code_update(); | |
1340 | pthread_mutex_unlock(socket->lock); | |
1341 | return ret; | |
1342 | } | |
1343 | ||
0dd01979 MD |
1344 | /* |
1345 | * Send a clear quiescent command to consumer using the given channel key. | |
1346 | * | |
1347 | * Return 0 on success else a negative value. | |
1348 | */ | |
1349 | int consumer_clear_quiescent_channel(struct consumer_socket *socket, uint64_t key) | |
1350 | { | |
1351 | int ret; | |
1352 | struct lttcomm_consumer_msg msg; | |
1353 | ||
a0377dfe | 1354 | LTTNG_ASSERT(socket); |
0dd01979 MD |
1355 | |
1356 | DBG2("Consumer clear quiescent channel key %" PRIu64, key); | |
1357 | ||
1358 | memset(&msg, 0, sizeof(msg)); | |
1359 | msg.cmd_type = LTTNG_CONSUMER_CLEAR_QUIESCENT_CHANNEL; | |
1360 | msg.u.clear_quiescent_channel.key = key; | |
1361 | ||
1362 | pthread_mutex_lock(socket->lock); | |
1363 | health_code_update(); | |
1364 | ||
1365 | ret = consumer_send_msg(socket, &msg); | |
1366 | if (ret < 0) { | |
1367 | goto end; | |
1368 | } | |
1369 | ||
1370 | end: | |
1371 | health_code_update(); | |
1372 | pthread_mutex_unlock(socket->lock); | |
1373 | return ret; | |
1374 | } | |
1375 | ||
7972aab2 | 1376 | /* |
dc2bbdae MD |
1377 | * Send a close metadata command to consumer using the given channel key. |
1378 | * Called with registry lock held. | |
7972aab2 DG |
1379 | * |
1380 | * Return 0 on success else a negative value. | |
1381 | */ | |
28ab034a | 1382 | int consumer_close_metadata(struct consumer_socket *socket, uint64_t metadata_key) |
7972aab2 DG |
1383 | { |
1384 | int ret; | |
1385 | struct lttcomm_consumer_msg msg; | |
1386 | ||
a0377dfe | 1387 | LTTNG_ASSERT(socket); |
7972aab2 DG |
1388 | |
1389 | DBG2("Consumer close metadata channel key %" PRIu64, metadata_key); | |
1390 | ||
53efb85a | 1391 | memset(&msg, 0, sizeof(msg)); |
7972aab2 DG |
1392 | msg.cmd_type = LTTNG_CONSUMER_CLOSE_METADATA; |
1393 | msg.u.close_metadata.key = metadata_key; | |
1394 | ||
1395 | pthread_mutex_lock(socket->lock); | |
1396 | health_code_update(); | |
1397 | ||
1398 | ret = consumer_send_msg(socket, &msg); | |
1399 | if (ret < 0) { | |
1400 | goto end; | |
1401 | } | |
1402 | ||
1403 | end: | |
1404 | health_code_update(); | |
1405 | pthread_mutex_unlock(socket->lock); | |
1406 | return ret; | |
1407 | } | |
1408 | ||
1409 | /* | |
1410 | * Send a setup metdata command to consumer using the given channel key. | |
1411 | * | |
1412 | * Return 0 on success else a negative value. | |
1413 | */ | |
28ab034a | 1414 | int consumer_setup_metadata(struct consumer_socket *socket, uint64_t metadata_key) |
7972aab2 DG |
1415 | { |
1416 | int ret; | |
1417 | struct lttcomm_consumer_msg msg; | |
1418 | ||
a0377dfe | 1419 | LTTNG_ASSERT(socket); |
7972aab2 DG |
1420 | |
1421 | DBG2("Consumer setup metadata channel key %" PRIu64, metadata_key); | |
1422 | ||
53efb85a | 1423 | memset(&msg, 0, sizeof(msg)); |
7972aab2 DG |
1424 | msg.cmd_type = LTTNG_CONSUMER_SETUP_METADATA; |
1425 | msg.u.setup_metadata.key = metadata_key; | |
1426 | ||
1427 | pthread_mutex_lock(socket->lock); | |
1428 | health_code_update(); | |
1429 | ||
1430 | ret = consumer_send_msg(socket, &msg); | |
1431 | if (ret < 0) { | |
1432 | goto end; | |
1433 | } | |
1434 | ||
1435 | end: | |
1436 | health_code_update(); | |
1437 | pthread_mutex_unlock(socket->lock); | |
1438 | return ret; | |
1439 | } | |
1440 | ||
1441 | /* | |
dc2bbdae MD |
1442 | * Send metadata string to consumer. |
1443 | * RCU read-side lock must be held to guarantee existence of socket. | |
7972aab2 DG |
1444 | * |
1445 | * Return 0 on success else a negative value. | |
1446 | */ | |
1447 | int consumer_push_metadata(struct consumer_socket *socket, | |
28ab034a JG |
1448 | uint64_t metadata_key, |
1449 | char *metadata_str, | |
1450 | size_t len, | |
1451 | size_t target_offset, | |
1452 | uint64_t version) | |
7972aab2 DG |
1453 | { |
1454 | int ret; | |
1455 | struct lttcomm_consumer_msg msg; | |
1456 | ||
a0377dfe | 1457 | LTTNG_ASSERT(socket); |
48b7cdc2 | 1458 | ASSERT_RCU_READ_LOCKED(); |
7972aab2 | 1459 | |
9363801e | 1460 | DBG2("Consumer push metadata to consumer socket %d", *socket->fd_ptr); |
7972aab2 | 1461 | |
dc2bbdae MD |
1462 | pthread_mutex_lock(socket->lock); |
1463 | ||
53efb85a | 1464 | memset(&msg, 0, sizeof(msg)); |
7972aab2 DG |
1465 | msg.cmd_type = LTTNG_CONSUMER_PUSH_METADATA; |
1466 | msg.u.push_metadata.key = metadata_key; | |
1467 | msg.u.push_metadata.target_offset = target_offset; | |
1468 | msg.u.push_metadata.len = len; | |
93ec662e | 1469 | msg.u.push_metadata.version = version; |
7972aab2 | 1470 | |
7972aab2 DG |
1471 | health_code_update(); |
1472 | ret = consumer_send_msg(socket, &msg); | |
331744e3 | 1473 | if (ret < 0 || len == 0) { |
7972aab2 DG |
1474 | goto end; |
1475 | } | |
1476 | ||
28ab034a | 1477 | DBG3("Consumer pushing metadata on sock %d of len %zu", *socket->fd_ptr, len); |
7972aab2 | 1478 | |
52898cb1 | 1479 | ret = consumer_socket_send(socket, metadata_str, len); |
7972aab2 DG |
1480 | if (ret < 0) { |
1481 | goto end; | |
1482 | } | |
1483 | ||
1484 | health_code_update(); | |
1485 | ret = consumer_recv_status_reply(socket); | |
1486 | if (ret < 0) { | |
1487 | goto end; | |
1488 | } | |
1489 | ||
1490 | end: | |
dc2bbdae | 1491 | pthread_mutex_unlock(socket->lock); |
7972aab2 | 1492 | health_code_update(); |
7972aab2 DG |
1493 | return ret; |
1494 | } | |
6dc3064a DG |
1495 | |
1496 | /* | |
1497 | * Ask the consumer to snapshot a specific channel using the key. | |
1498 | * | |
9a654598 | 1499 | * Returns LTTNG_OK on success or else an LTTng error code. |
6dc3064a | 1500 | */ |
9a654598 | 1501 | enum lttng_error_code consumer_snapshot_channel(struct consumer_socket *socket, |
28ab034a JG |
1502 | uint64_t key, |
1503 | const struct consumer_output *output, | |
1504 | int metadata, | |
1505 | const char *channel_path, | |
1506 | uint64_t nb_packets_per_stream) | |
6dc3064a DG |
1507 | { |
1508 | int ret; | |
9a654598 | 1509 | enum lttng_error_code status = LTTNG_OK; |
6dc3064a DG |
1510 | struct lttcomm_consumer_msg msg; |
1511 | ||
a0377dfe FD |
1512 | LTTNG_ASSERT(socket); |
1513 | LTTNG_ASSERT(output); | |
6dc3064a DG |
1514 | |
1515 | DBG("Consumer snapshot channel key %" PRIu64, key); | |
1516 | ||
ee91bab2 | 1517 | memset(&msg, 0, sizeof(msg)); |
6dc3064a DG |
1518 | msg.cmd_type = LTTNG_CONSUMER_SNAPSHOT_CHANNEL; |
1519 | msg.u.snapshot_channel.key = key; | |
d07ceecd | 1520 | msg.u.snapshot_channel.nb_packets_per_stream = nb_packets_per_stream; |
6dc3064a DG |
1521 | msg.u.snapshot_channel.metadata = metadata; |
1522 | ||
348a81dc | 1523 | if (output->type == CONSUMER_DST_NET) { |
28ab034a | 1524 | msg.u.snapshot_channel.relayd_id = output->net_seq_index; |
6dc3064a | 1525 | msg.u.snapshot_channel.use_relayd = 1; |
6dc3064a | 1526 | } else { |
07b86b52 | 1527 | msg.u.snapshot_channel.relayd_id = (uint64_t) -1ULL; |
d2956687 JG |
1528 | } |
1529 | ret = lttng_strncpy(msg.u.snapshot_channel.pathname, | |
28ab034a JG |
1530 | channel_path, |
1531 | sizeof(msg.u.snapshot_channel.pathname)); | |
d2956687 JG |
1532 | if (ret < 0) { |
1533 | ERR("Snapshot path exceeds the maximal allowed length of %zu bytes (%zu bytes required) with path \"%s\"", | |
28ab034a JG |
1534 | sizeof(msg.u.snapshot_channel.pathname), |
1535 | strlen(channel_path), | |
1536 | channel_path); | |
d2956687 JG |
1537 | status = LTTNG_ERR_SNAPSHOT_FAIL; |
1538 | goto error; | |
6dc3064a DG |
1539 | } |
1540 | ||
1541 | health_code_update(); | |
9d1103e6 | 1542 | pthread_mutex_lock(socket->lock); |
6dc3064a | 1543 | ret = consumer_send_msg(socket, &msg); |
9d1103e6 | 1544 | pthread_mutex_unlock(socket->lock); |
6dc3064a | 1545 | if (ret < 0) { |
9bbfb88c MD |
1546 | switch (-ret) { |
1547 | case LTTCOMM_CONSUMERD_CHAN_NOT_FOUND: | |
9a654598 | 1548 | status = LTTNG_ERR_CHAN_NOT_FOUND; |
9bbfb88c MD |
1549 | break; |
1550 | default: | |
9a654598 | 1551 | status = LTTNG_ERR_SNAPSHOT_FAIL; |
9bbfb88c MD |
1552 | break; |
1553 | } | |
6dc3064a DG |
1554 | goto error; |
1555 | } | |
1556 | ||
1557 | error: | |
1558 | health_code_update(); | |
9a654598 | 1559 | return status; |
6dc3064a | 1560 | } |
fb83fe64 JD |
1561 | |
1562 | /* | |
1563 | * Ask the consumer the number of discarded events for a channel. | |
1564 | */ | |
28ab034a JG |
1565 | int consumer_get_discarded_events(uint64_t session_id, |
1566 | uint64_t channel_key, | |
1567 | struct consumer_output *consumer, | |
1568 | uint64_t *discarded) | |
fb83fe64 JD |
1569 | { |
1570 | int ret; | |
1571 | struct consumer_socket *socket; | |
1572 | struct lttng_ht_iter iter; | |
1573 | struct lttcomm_consumer_msg msg; | |
1574 | ||
a0377dfe | 1575 | LTTNG_ASSERT(consumer); |
fb83fe64 JD |
1576 | |
1577 | DBG3("Consumer discarded events id %" PRIu64, session_id); | |
1578 | ||
1579 | memset(&msg, 0, sizeof(msg)); | |
1580 | msg.cmd_type = LTTNG_CONSUMER_DISCARDED_EVENTS; | |
1581 | msg.u.discarded_events.session_id = session_id; | |
1582 | msg.u.discarded_events.channel_key = channel_key; | |
1583 | ||
1584 | *discarded = 0; | |
1585 | ||
56047f5a JG |
1586 | /* Send command for each consumer. */ |
1587 | { | |
07c4863f | 1588 | const lttng::urcu::read_lock_guard read_lock; |
56047f5a JG |
1589 | |
1590 | cds_lfht_for_each_entry (consumer->socks->ht, &iter.iter, socket, node.node) { | |
1591 | uint64_t consumer_discarded = 0; | |
1592 | ||
1593 | pthread_mutex_lock(socket->lock); | |
1594 | ret = consumer_socket_send(socket, &msg, sizeof(msg)); | |
1595 | if (ret < 0) { | |
1596 | pthread_mutex_unlock(socket->lock); | |
1597 | goto end; | |
1598 | } | |
1599 | ||
1600 | /* | |
1601 | * No need for a recv reply status because the answer to the | |
1602 | * command is the reply status message. | |
1603 | */ | |
1604 | ret = consumer_socket_recv( | |
1605 | socket, &consumer_discarded, sizeof(consumer_discarded)); | |
1606 | if (ret < 0) { | |
1607 | ERR("get discarded events"); | |
1608 | pthread_mutex_unlock(socket->lock); | |
1609 | goto end; | |
1610 | } | |
fb83fe64 | 1611 | |
fb83fe64 | 1612 | pthread_mutex_unlock(socket->lock); |
56047f5a | 1613 | *discarded += consumer_discarded; |
fb83fe64 | 1614 | } |
fb83fe64 | 1615 | } |
56047f5a | 1616 | |
fb83fe64 | 1617 | ret = 0; |
28ab034a | 1618 | DBG("Consumer discarded %" PRIu64 " events in session id %" PRIu64, *discarded, session_id); |
fb83fe64 JD |
1619 | |
1620 | end: | |
fb83fe64 JD |
1621 | return ret; |
1622 | } | |
1623 | ||
1624 | /* | |
1625 | * Ask the consumer the number of lost packets for a channel. | |
1626 | */ | |
28ab034a JG |
1627 | int consumer_get_lost_packets(uint64_t session_id, |
1628 | uint64_t channel_key, | |
1629 | struct consumer_output *consumer, | |
1630 | uint64_t *lost) | |
fb83fe64 JD |
1631 | { |
1632 | int ret; | |
1633 | struct consumer_socket *socket; | |
1634 | struct lttng_ht_iter iter; | |
1635 | struct lttcomm_consumer_msg msg; | |
1636 | ||
a0377dfe | 1637 | LTTNG_ASSERT(consumer); |
fb83fe64 JD |
1638 | |
1639 | DBG3("Consumer lost packets id %" PRIu64, session_id); | |
1640 | ||
1641 | memset(&msg, 0, sizeof(msg)); | |
1642 | msg.cmd_type = LTTNG_CONSUMER_LOST_PACKETS; | |
1643 | msg.u.lost_packets.session_id = session_id; | |
1644 | msg.u.lost_packets.channel_key = channel_key; | |
1645 | ||
1646 | *lost = 0; | |
1647 | ||
56047f5a JG |
1648 | /* Send command for each consumer. */ |
1649 | { | |
07c4863f | 1650 | const lttng::urcu::read_lock_guard read_lock; |
fb83fe64 | 1651 | |
56047f5a JG |
1652 | cds_lfht_for_each_entry (consumer->socks->ht, &iter.iter, socket, node.node) { |
1653 | uint64_t consumer_lost = 0; | |
1654 | pthread_mutex_lock(socket->lock); | |
1655 | ret = consumer_socket_send(socket, &msg, sizeof(msg)); | |
1656 | if (ret < 0) { | |
1657 | pthread_mutex_unlock(socket->lock); | |
1658 | goto end; | |
1659 | } | |
1660 | ||
1661 | /* | |
1662 | * No need for a recv reply status because the answer to the | |
1663 | * command is the reply status message. | |
1664 | */ | |
1665 | ret = consumer_socket_recv(socket, &consumer_lost, sizeof(consumer_lost)); | |
1666 | if (ret < 0) { | |
1667 | ERR("get lost packets"); | |
1668 | pthread_mutex_unlock(socket->lock); | |
1669 | goto end; | |
1670 | } | |
fb83fe64 | 1671 | pthread_mutex_unlock(socket->lock); |
56047f5a | 1672 | *lost += consumer_lost; |
fb83fe64 | 1673 | } |
fb83fe64 | 1674 | } |
56047f5a | 1675 | |
fb83fe64 | 1676 | ret = 0; |
28ab034a | 1677 | DBG("Consumer lost %" PRIu64 " packets in session id %" PRIu64, *lost, session_id); |
fb83fe64 JD |
1678 | |
1679 | end: | |
fb83fe64 JD |
1680 | return ret; |
1681 | } | |
a1ae2ea5 | 1682 | |
5c408ad8 JD |
1683 | /* |
1684 | * Ask the consumer to rotate a channel. | |
5c408ad8 JD |
1685 | * |
1686 | * The new_chunk_id is the session->rotate_count that has been incremented | |
1687 | * when the rotation started. On the relay, this allows to keep track in which | |
1688 | * chunk each stream is currently writing to (for the rotate_pending operation). | |
1689 | */ | |
28ab034a JG |
1690 | int consumer_rotate_channel(struct consumer_socket *socket, |
1691 | uint64_t key, | |
1692 | struct consumer_output *output, | |
1693 | bool is_metadata_channel) | |
5c408ad8 JD |
1694 | { |
1695 | int ret; | |
1696 | struct lttcomm_consumer_msg msg; | |
1697 | ||
a0377dfe | 1698 | LTTNG_ASSERT(socket); |
5c408ad8 JD |
1699 | |
1700 | DBG("Consumer rotate channel key %" PRIu64, key); | |
1701 | ||
1702 | pthread_mutex_lock(socket->lock); | |
1703 | memset(&msg, 0, sizeof(msg)); | |
1704 | msg.cmd_type = LTTNG_CONSUMER_ROTATE_CHANNEL; | |
1705 | msg.u.rotate_channel.key = key; | |
1706 | msg.u.rotate_channel.metadata = !!is_metadata_channel; | |
5c408ad8 JD |
1707 | |
1708 | if (output->type == CONSUMER_DST_NET) { | |
1709 | msg.u.rotate_channel.relayd_id = output->net_seq_index; | |
5c408ad8 JD |
1710 | } else { |
1711 | msg.u.rotate_channel.relayd_id = (uint64_t) -1ULL; | |
5c408ad8 JD |
1712 | } |
1713 | ||
1714 | health_code_update(); | |
1715 | ret = consumer_send_msg(socket, &msg); | |
1716 | if (ret < 0) { | |
20f37cb4 MD |
1717 | switch (-ret) { |
1718 | case LTTCOMM_CONSUMERD_CHAN_NOT_FOUND: | |
1719 | ret = -LTTNG_ERR_CHAN_NOT_FOUND; | |
1720 | break; | |
1721 | default: | |
1722 | ret = -LTTNG_ERR_ROTATION_FAIL_CONSUMER; | |
1723 | break; | |
1724 | } | |
5c408ad8 JD |
1725 | goto error; |
1726 | } | |
5c408ad8 JD |
1727 | error: |
1728 | pthread_mutex_unlock(socket->lock); | |
1729 | health_code_update(); | |
1730 | return ret; | |
1731 | } | |
1732 | ||
04ed9e10 JG |
1733 | int consumer_open_channel_packets(struct consumer_socket *socket, uint64_t key) |
1734 | { | |
1735 | int ret; | |
7966af57 | 1736 | lttcomm_consumer_msg msg = { |
04ed9e10 | 1737 | .cmd_type = LTTNG_CONSUMER_OPEN_CHANNEL_PACKETS, |
1c9a0b0e | 1738 | .u = {}, |
04ed9e10 | 1739 | }; |
7966af57 | 1740 | msg.u.open_channel_packets.key = key; |
04ed9e10 | 1741 | |
a0377dfe | 1742 | LTTNG_ASSERT(socket); |
04ed9e10 JG |
1743 | |
1744 | DBG("Consumer open channel packets: channel key = %" PRIu64, key); | |
1745 | ||
1746 | health_code_update(); | |
1747 | ||
1748 | pthread_mutex_lock(socket->lock); | |
1749 | ret = consumer_send_msg(socket, &msg); | |
1750 | pthread_mutex_unlock(socket->lock); | |
1751 | if (ret < 0) { | |
1752 | goto error_socket; | |
1753 | } | |
1754 | ||
1755 | error_socket: | |
1756 | health_code_update(); | |
1757 | return ret; | |
1758 | } | |
1759 | ||
51a4828f MD |
1760 | int consumer_clear_channel(struct consumer_socket *socket, uint64_t key) |
1761 | { | |
1762 | int ret; | |
1763 | struct lttcomm_consumer_msg msg; | |
1764 | ||
a0377dfe | 1765 | LTTNG_ASSERT(socket); |
51a4828f MD |
1766 | |
1767 | DBG("Consumer clear channel %" PRIu64, key); | |
1768 | ||
1769 | memset(&msg, 0, sizeof(msg)); | |
1770 | msg.cmd_type = LTTNG_CONSUMER_CLEAR_CHANNEL; | |
1771 | msg.u.clear_channel.key = key; | |
1772 | ||
1773 | health_code_update(); | |
1774 | ||
1775 | pthread_mutex_lock(socket->lock); | |
1776 | ret = consumer_send_msg(socket, &msg); | |
1777 | if (ret < 0) { | |
1778 | goto error_socket; | |
1779 | } | |
1780 | ||
1781 | error_socket: | |
1782 | pthread_mutex_unlock(socket->lock); | |
1783 | ||
1784 | health_code_update(); | |
1785 | return ret; | |
1786 | } | |
1787 | ||
28ab034a | 1788 | int consumer_init(struct consumer_socket *socket, const lttng_uuid& sessiond_uuid) |
00fb02ac JD |
1789 | { |
1790 | int ret; | |
d2956687 JG |
1791 | struct lttcomm_consumer_msg msg = { |
1792 | .cmd_type = LTTNG_CONSUMER_INIT, | |
1c9a0b0e | 1793 | .u = {}, |
d2956687 | 1794 | }; |
00fb02ac | 1795 | |
a0377dfe | 1796 | LTTNG_ASSERT(socket); |
00fb02ac | 1797 | |
d2956687 | 1798 | DBG("Sending consumer initialization command"); |
328c2fe7 | 1799 | std::copy(sessiond_uuid.begin(), sessiond_uuid.end(), msg.u.init.sessiond_uuid); |
00fb02ac JD |
1800 | |
1801 | health_code_update(); | |
1802 | ret = consumer_send_msg(socket, &msg); | |
1803 | if (ret < 0) { | |
1804 | goto error; | |
1805 | } | |
1806 | ||
d88744a4 JD |
1807 | error: |
1808 | health_code_update(); | |
1809 | return ret; | |
1810 | } | |
1811 | ||
1812 | /* | |
d2956687 | 1813 | * Ask the consumer to create a new chunk for a given session. |
92816cc3 | 1814 | * |
d2956687 | 1815 | * Called with the consumer socket lock held. |
92816cc3 | 1816 | */ |
d2956687 | 1817 | int consumer_create_trace_chunk(struct consumer_socket *socket, |
28ab034a JG |
1818 | uint64_t relayd_id, |
1819 | uint64_t session_id, | |
1820 | struct lttng_trace_chunk *chunk, | |
1821 | const char *domain_subdir) | |
92816cc3 JG |
1822 | { |
1823 | int ret; | |
d2956687 JG |
1824 | enum lttng_trace_chunk_status chunk_status; |
1825 | struct lttng_credentials chunk_credentials; | |
cd9adb8b JG |
1826 | const struct lttng_directory_handle *chunk_directory_handle = nullptr; |
1827 | struct lttng_directory_handle *domain_handle = nullptr; | |
5da88b0f | 1828 | int domain_dirfd; |
d2956687 | 1829 | const char *chunk_name; |
913a542b | 1830 | bool chunk_name_overridden; |
d2956687 JG |
1831 | uint64_t chunk_id; |
1832 | time_t creation_timestamp; | |
1833 | char creation_timestamp_buffer[ISO8601_STR_LEN]; | |
1834 | const char *creation_timestamp_str = "(none)"; | |
1835 | const bool chunk_has_local_output = relayd_id == -1ULL; | |
69ebf37e | 1836 | enum lttng_trace_chunk_status tc_status; |
d2956687 JG |
1837 | struct lttcomm_consumer_msg msg = { |
1838 | .cmd_type = LTTNG_CONSUMER_CREATE_TRACE_CHUNK, | |
1c9a0b0e | 1839 | .u = {}, |
d2956687 | 1840 | }; |
7966af57 | 1841 | msg.u.create_trace_chunk.session_id = session_id; |
92816cc3 | 1842 | |
a0377dfe FD |
1843 | LTTNG_ASSERT(socket); |
1844 | LTTNG_ASSERT(chunk); | |
92816cc3 | 1845 | |
d2956687 | 1846 | if (relayd_id != -1ULL) { |
28ab034a | 1847 | LTTNG_OPTIONAL_SET(&msg.u.create_trace_chunk.relayd_id, relayd_id); |
d2956687 | 1848 | } |
92816cc3 | 1849 | |
28ab034a | 1850 | chunk_status = lttng_trace_chunk_get_name(chunk, &chunk_name, &chunk_name_overridden); |
d2956687 | 1851 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK && |
28ab034a | 1852 | chunk_status != LTTNG_TRACE_CHUNK_STATUS_NONE) { |
d2956687 JG |
1853 | ERR("Failed to get name of trace chunk"); |
1854 | ret = -LTTNG_ERR_FATAL; | |
92816cc3 JG |
1855 | goto error; |
1856 | } | |
913a542b | 1857 | if (chunk_name_overridden) { |
d2956687 | 1858 | ret = lttng_strncpy(msg.u.create_trace_chunk.override_name, |
28ab034a JG |
1859 | chunk_name, |
1860 | sizeof(msg.u.create_trace_chunk.override_name)); | |
d2956687 JG |
1861 | if (ret) { |
1862 | ERR("Trace chunk name \"%s\" exceeds the maximal length allowed by the consumer protocol", | |
28ab034a | 1863 | chunk_name); |
d2956687 JG |
1864 | ret = -LTTNG_ERR_FATAL; |
1865 | goto error; | |
1866 | } | |
1867 | } | |
92816cc3 | 1868 | |
28ab034a | 1869 | chunk_status = lttng_trace_chunk_get_creation_timestamp(chunk, &creation_timestamp); |
d2956687 JG |
1870 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { |
1871 | ret = -LTTNG_ERR_FATAL; | |
92816cc3 JG |
1872 | goto error; |
1873 | } | |
28ab034a | 1874 | msg.u.create_trace_chunk.creation_timestamp = (uint64_t) creation_timestamp; |
d2956687 | 1875 | /* Only used for logging purposes. */ |
28ab034a JG |
1876 | ret = time_to_iso8601_str( |
1877 | creation_timestamp, creation_timestamp_buffer, sizeof(creation_timestamp_buffer)); | |
1878 | creation_timestamp_str = !ret ? creation_timestamp_buffer : "(formatting error)"; | |
d2956687 JG |
1879 | |
1880 | chunk_status = lttng_trace_chunk_get_id(chunk, &chunk_id); | |
1881 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
1882 | /* | |
1883 | * Anonymous trace chunks should never be transmitted | |
1884 | * to remote peers (consumerd and relayd). They are used | |
1885 | * internally for backward-compatibility purposes. | |
1886 | */ | |
1887 | ret = -LTTNG_ERR_FATAL; | |
1888 | goto error; | |
1889 | } | |
1890 | msg.u.create_trace_chunk.chunk_id = chunk_id; | |
92816cc3 | 1891 | |
d2956687 | 1892 | if (chunk_has_local_output) { |
cbf53d23 | 1893 | chunk_status = lttng_trace_chunk_borrow_chunk_directory_handle( |
28ab034a | 1894 | chunk, &chunk_directory_handle); |
d2956687 JG |
1895 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { |
1896 | ret = -LTTNG_ERR_FATAL; | |
1897 | goto error; | |
1898 | } | |
28ab034a | 1899 | chunk_status = lttng_trace_chunk_get_credentials(chunk, &chunk_credentials); |
e5add6d0 JG |
1900 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { |
1901 | /* | |
1902 | * Not associating credentials to a sessiond chunk is a | |
1903 | * fatal internal error. | |
1904 | */ | |
1905 | ret = -LTTNG_ERR_FATAL; | |
1906 | goto error; | |
1907 | } | |
28ab034a | 1908 | tc_status = lttng_trace_chunk_create_subdirectory(chunk, domain_subdir); |
69ebf37e | 1909 | if (tc_status != LTTNG_TRACE_CHUNK_STATUS_OK) { |
5da88b0f | 1910 | PERROR("Failed to create chunk domain output directory \"%s\"", |
28ab034a | 1911 | domain_subdir); |
5da88b0f MD |
1912 | ret = -LTTNG_ERR_FATAL; |
1913 | goto error; | |
1914 | } | |
28ab034a JG |
1915 | domain_handle = lttng_directory_handle_create_from_handle(domain_subdir, |
1916 | chunk_directory_handle); | |
5da88b0f MD |
1917 | if (!domain_handle) { |
1918 | ret = -LTTNG_ERR_FATAL; | |
1919 | goto error; | |
1920 | } | |
1921 | ||
1922 | /* | |
1923 | * This will only compile on platforms that support | |
1924 | * dirfd (POSIX.2008). This is fine as the session daemon | |
1925 | * is only built for such platforms. | |
1926 | * | |
1927 | * The ownership of the chunk directory handle's is maintained | |
1928 | * by the trace chunk. | |
1929 | */ | |
28ab034a | 1930 | domain_dirfd = lttng_directory_handle_get_dirfd(domain_handle); |
a0377dfe | 1931 | LTTNG_ASSERT(domain_dirfd >= 0); |
5da88b0f | 1932 | |
e5add6d0 | 1933 | msg.u.create_trace_chunk.credentials.value.uid = |
28ab034a | 1934 | lttng_credentials_get_uid(&chunk_credentials); |
e5add6d0 | 1935 | msg.u.create_trace_chunk.credentials.value.gid = |
28ab034a | 1936 | lttng_credentials_get_gid(&chunk_credentials); |
e5add6d0 | 1937 | msg.u.create_trace_chunk.credentials.is_set = 1; |
d2956687 | 1938 | } |
d88744a4 | 1939 | |
d2956687 | 1940 | DBG("Sending consumer create trace chunk command: relayd_id = %" PRId64 |
28ab034a JG |
1941 | ", session_id = %" PRIu64 ", chunk_id = %" PRIu64 ", creation_timestamp = %s", |
1942 | relayd_id, | |
1943 | session_id, | |
1944 | chunk_id, | |
1945 | creation_timestamp_str); | |
d88744a4 JD |
1946 | health_code_update(); |
1947 | ret = consumer_send_msg(socket, &msg); | |
d2956687 | 1948 | health_code_update(); |
d88744a4 | 1949 | if (ret < 0) { |
d2956687 JG |
1950 | ERR("Trace chunk creation error on consumer"); |
1951 | ret = -LTTNG_ERR_CREATE_TRACE_CHUNK_FAIL_CONSUMER; | |
d88744a4 JD |
1952 | goto error; |
1953 | } | |
1954 | ||
d2956687 | 1955 | if (chunk_has_local_output) { |
5da88b0f | 1956 | DBG("Sending trace chunk domain directory fd to consumer"); |
d2956687 | 1957 | health_code_update(); |
5da88b0f | 1958 | ret = consumer_send_fds(socket, &domain_dirfd, 1); |
d2956687 JG |
1959 | health_code_update(); |
1960 | if (ret < 0) { | |
1961 | ERR("Trace chunk creation error on consumer"); | |
1962 | ret = -LTTNG_ERR_CREATE_TRACE_CHUNK_FAIL_CONSUMER; | |
1963 | goto error; | |
1964 | } | |
d88744a4 | 1965 | } |
00fb02ac | 1966 | error: |
5da88b0f | 1967 | lttng_directory_handle_put(domain_handle); |
00fb02ac JD |
1968 | return ret; |
1969 | } | |
1970 | ||
a1ae2ea5 | 1971 | /* |
d2956687 | 1972 | * Ask the consumer to close a trace chunk for a given session. |
a1ae2ea5 JD |
1973 | * |
1974 | * Called with the consumer socket lock held. | |
1975 | */ | |
d2956687 | 1976 | int consumer_close_trace_chunk(struct consumer_socket *socket, |
28ab034a JG |
1977 | uint64_t relayd_id, |
1978 | uint64_t session_id, | |
1979 | struct lttng_trace_chunk *chunk, | |
1980 | char *closed_trace_chunk_path) | |
a1ae2ea5 JD |
1981 | { |
1982 | int ret; | |
d2956687 | 1983 | enum lttng_trace_chunk_status chunk_status; |
7966af57 SM |
1984 | lttcomm_consumer_msg msg = { |
1985 | .cmd_type = LTTNG_CONSUMER_CLOSE_TRACE_CHUNK, | |
1c9a0b0e | 1986 | .u = {}, |
d2956687 | 1987 | }; |
7966af57 SM |
1988 | msg.u.close_trace_chunk.session_id = session_id; |
1989 | ||
ecd1a12f | 1990 | struct lttcomm_consumer_close_trace_chunk_reply reply; |
d2956687 JG |
1991 | uint64_t chunk_id; |
1992 | time_t close_timestamp; | |
bbc4768c JG |
1993 | enum lttng_trace_chunk_command_type close_command; |
1994 | const char *close_command_name = "none"; | |
ecd1a12f | 1995 | struct lttng_dynamic_buffer path_reception_buffer; |
a1ae2ea5 | 1996 | |
a0377dfe | 1997 | LTTNG_ASSERT(socket); |
ecd1a12f | 1998 | lttng_dynamic_buffer_init(&path_reception_buffer); |
a1ae2ea5 | 1999 | |
d2956687 | 2000 | if (relayd_id != -1ULL) { |
28ab034a | 2001 | LTTNG_OPTIONAL_SET(&msg.u.close_trace_chunk.relayd_id, relayd_id); |
bbc4768c JG |
2002 | } |
2003 | ||
28ab034a | 2004 | chunk_status = lttng_trace_chunk_get_close_command(chunk, &close_command); |
bbc4768c JG |
2005 | switch (chunk_status) { |
2006 | case LTTNG_TRACE_CHUNK_STATUS_OK: | |
2007 | LTTNG_OPTIONAL_SET(&msg.u.close_trace_chunk.close_command, | |
28ab034a | 2008 | (uint32_t) close_command); |
bbc4768c JG |
2009 | break; |
2010 | case LTTNG_TRACE_CHUNK_STATUS_NONE: | |
2011 | break; | |
2012 | default: | |
2013 | ERR("Failed to get trace chunk close command"); | |
2014 | ret = -1; | |
2015 | goto error; | |
a1ae2ea5 JD |
2016 | } |
2017 | ||
d2956687 JG |
2018 | chunk_status = lttng_trace_chunk_get_id(chunk, &chunk_id); |
2019 | /* | |
2020 | * Anonymous trace chunks should never be transmitted to remote peers | |
2021 | * (consumerd and relayd). They are used internally for | |
2022 | * backward-compatibility purposes. | |
2023 | */ | |
a0377dfe | 2024 | LTTNG_ASSERT(chunk_status == LTTNG_TRACE_CHUNK_STATUS_OK); |
d2956687 JG |
2025 | msg.u.close_trace_chunk.chunk_id = chunk_id; |
2026 | ||
28ab034a | 2027 | chunk_status = lttng_trace_chunk_get_close_timestamp(chunk, &close_timestamp); |
d2956687 JG |
2028 | /* |
2029 | * A trace chunk should be closed locally before being closed remotely. | |
2030 | * Otherwise, the close timestamp would never be transmitted to the | |
2031 | * peers. | |
2032 | */ | |
a0377dfe | 2033 | LTTNG_ASSERT(chunk_status == LTTNG_TRACE_CHUNK_STATUS_OK); |
d2956687 JG |
2034 | msg.u.close_trace_chunk.close_timestamp = (uint64_t) close_timestamp; |
2035 | ||
bbc4768c | 2036 | if (msg.u.close_trace_chunk.close_command.is_set) { |
28ab034a | 2037 | close_command_name = lttng_trace_chunk_command_type_get_name(close_command); |
bbc4768c | 2038 | } |
d2956687 | 2039 | DBG("Sending consumer close trace chunk command: relayd_id = %" PRId64 |
28ab034a JG |
2040 | ", session_id = %" PRIu64 ", chunk_id = %" PRIu64 ", close command = \"%s\"", |
2041 | relayd_id, | |
2042 | session_id, | |
2043 | chunk_id, | |
2044 | close_command_name); | |
a1ae2ea5 JD |
2045 | |
2046 | health_code_update(); | |
ecd1a12f | 2047 | ret = consumer_socket_send(socket, &msg, sizeof(struct lttcomm_consumer_msg)); |
a1ae2ea5 | 2048 | if (ret < 0) { |
d2956687 | 2049 | ret = -LTTNG_ERR_CLOSE_TRACE_CHUNK_FAIL_CONSUMER; |
a1ae2ea5 JD |
2050 | goto error; |
2051 | } | |
ecd1a12f MD |
2052 | ret = consumer_socket_recv(socket, &reply, sizeof(reply)); |
2053 | if (ret < 0) { | |
2054 | ret = -LTTNG_ERR_CLOSE_TRACE_CHUNK_FAIL_CONSUMER; | |
2055 | goto error; | |
2056 | } | |
2057 | if (reply.path_length >= LTTNG_PATH_MAX) { | |
28ab034a JG |
2058 | ERR("Invalid path returned by relay daemon: %" PRIu32 |
2059 | "bytes exceeds maximal allowed length of %d bytes", | |
2060 | reply.path_length, | |
2061 | LTTNG_PATH_MAX); | |
ecd1a12f MD |
2062 | ret = -LTTNG_ERR_INVALID_PROTOCOL; |
2063 | goto error; | |
2064 | } | |
28ab034a | 2065 | ret = lttng_dynamic_buffer_set_size(&path_reception_buffer, reply.path_length); |
ecd1a12f MD |
2066 | if (ret) { |
2067 | ERR("Failed to allocate reception buffer of path returned by the \"close trace chunk\" command"); | |
2068 | ret = -LTTNG_ERR_NOMEM; | |
2069 | goto error; | |
2070 | } | |
28ab034a | 2071 | ret = consumer_socket_recv(socket, path_reception_buffer.data, path_reception_buffer.size); |
ecd1a12f MD |
2072 | if (ret < 0) { |
2073 | ERR("Communication error while receiving path of closed trace chunk"); | |
2074 | ret = -LTTNG_ERR_CLOSE_TRACE_CHUNK_FAIL_CONSUMER; | |
2075 | goto error; | |
2076 | } | |
2077 | if (path_reception_buffer.data[path_reception_buffer.size - 1] != '\0') { | |
2078 | ERR("Invalid path returned by relay daemon: not null-terminated"); | |
2079 | ret = -LTTNG_ERR_INVALID_PROTOCOL; | |
2080 | goto error; | |
2081 | } | |
2082 | if (closed_trace_chunk_path) { | |
2083 | /* | |
2084 | * closed_trace_chunk_path is assumed to have a length >= | |
2085 | * LTTNG_PATH_MAX | |
2086 | */ | |
28ab034a JG |
2087 | memcpy(closed_trace_chunk_path, |
2088 | path_reception_buffer.data, | |
2089 | path_reception_buffer.size); | |
ecd1a12f | 2090 | } |
a1ae2ea5 | 2091 | error: |
ecd1a12f | 2092 | lttng_dynamic_buffer_reset(&path_reception_buffer); |
a1ae2ea5 JD |
2093 | health_code_update(); |
2094 | return ret; | |
2095 | } | |
3654ed19 | 2096 | |
d2956687 JG |
2097 | /* |
2098 | * Ask the consumer if a trace chunk exists. | |
2099 | * | |
2100 | * Called with the consumer socket lock held. | |
2101 | * Returns 0 on success, or a negative value on error. | |
2102 | */ | |
2103 | int consumer_trace_chunk_exists(struct consumer_socket *socket, | |
28ab034a JG |
2104 | uint64_t relayd_id, |
2105 | uint64_t session_id, | |
2106 | struct lttng_trace_chunk *chunk, | |
2107 | enum consumer_trace_chunk_exists_status *result) | |
3654ed19 JG |
2108 | { |
2109 | int ret; | |
d2956687 | 2110 | enum lttng_trace_chunk_status chunk_status; |
7966af57 | 2111 | lttcomm_consumer_msg msg = { |
d2956687 | 2112 | .cmd_type = LTTNG_CONSUMER_TRACE_CHUNK_EXISTS, |
1c9a0b0e | 2113 | .u = {}, |
3654ed19 | 2114 | }; |
7966af57 SM |
2115 | msg.u.trace_chunk_exists.session_id = session_id; |
2116 | ||
d2956687 JG |
2117 | uint64_t chunk_id; |
2118 | const char *consumer_reply_str; | |
3654ed19 | 2119 | |
a0377dfe | 2120 | LTTNG_ASSERT(socket); |
3654ed19 | 2121 | |
d2956687 | 2122 | if (relayd_id != -1ULL) { |
28ab034a | 2123 | LTTNG_OPTIONAL_SET(&msg.u.trace_chunk_exists.relayd_id, relayd_id); |
d2956687 JG |
2124 | } |
2125 | ||
2126 | chunk_status = lttng_trace_chunk_get_id(chunk, &chunk_id); | |
2127 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
2128 | /* | |
2129 | * Anonymous trace chunks should never be transmitted | |
2130 | * to remote peers (consumerd and relayd). They are used | |
2131 | * internally for backward-compatibility purposes. | |
2132 | */ | |
2133 | ret = -LTTNG_ERR_FATAL; | |
2134 | goto error; | |
2135 | } | |
2136 | msg.u.trace_chunk_exists.chunk_id = chunk_id; | |
2137 | ||
2138 | DBG("Sending consumer trace chunk exists command: relayd_id = %" PRId64 | |
28ab034a JG |
2139 | ", session_id = %" PRIu64 ", chunk_id = %" PRIu64, |
2140 | relayd_id, | |
2141 | session_id, | |
2142 | chunk_id); | |
3654ed19 JG |
2143 | |
2144 | health_code_update(); | |
2145 | ret = consumer_send_msg(socket, &msg); | |
d2956687 JG |
2146 | switch (-ret) { |
2147 | case LTTCOMM_CONSUMERD_UNKNOWN_TRACE_CHUNK: | |
2148 | consumer_reply_str = "unknown trace chunk"; | |
2149 | *result = CONSUMER_TRACE_CHUNK_EXISTS_STATUS_UNKNOWN_CHUNK; | |
2150 | break; | |
2151 | case LTTCOMM_CONSUMERD_TRACE_CHUNK_EXISTS_LOCAL: | |
2152 | consumer_reply_str = "trace chunk exists locally"; | |
2153 | *result = CONSUMER_TRACE_CHUNK_EXISTS_STATUS_EXISTS_LOCAL; | |
2154 | break; | |
2155 | case LTTCOMM_CONSUMERD_TRACE_CHUNK_EXISTS_REMOTE: | |
2156 | consumer_reply_str = "trace chunk exists on remote peer"; | |
2157 | *result = CONSUMER_TRACE_CHUNK_EXISTS_STATUS_EXISTS_REMOTE; | |
2158 | break; | |
2159 | default: | |
2160 | ERR("Consumer returned an error from TRACE_CHUNK_EXISTS command"); | |
2161 | ret = -1; | |
3654ed19 JG |
2162 | goto error; |
2163 | } | |
28ab034a | 2164 | DBG("Consumer reply to TRACE_CHUNK_EXISTS command: %s", consumer_reply_str); |
d2956687 | 2165 | ret = 0; |
3654ed19 JG |
2166 | error: |
2167 | health_code_update(); | |
2168 | return ret; | |
2169 | } |