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> | |
28ab034a | 20 | #include <common/uri.hpp> |
00e2e675 | 21 | |
28ab034a JG |
22 | #include <inttypes.h> |
23 | #include <stdio.h> | |
24 | #include <stdlib.h> | |
25 | #include <string.h> | |
26 | #include <sys/stat.h> | |
27 | #include <sys/types.h> | |
28 | #include <unistd.h> | |
00e2e675 | 29 | |
3b967712 MD |
30 | /* |
31 | * Return allocated full pathname of the session using the consumer trace path | |
32 | * and subdir if available. | |
33 | * | |
34 | * The caller can safely free(3) the returned value. On error, NULL is | |
35 | * returned. | |
36 | */ | |
37 | char *setup_channel_trace_path(struct consumer_output *consumer, | |
28ab034a JG |
38 | const char *session_path, |
39 | size_t *consumer_path_offset) | |
3b967712 MD |
40 | { |
41 | int ret; | |
42 | char *pathname; | |
43 | ||
a0377dfe FD |
44 | LTTNG_ASSERT(consumer); |
45 | LTTNG_ASSERT(session_path); | |
3b967712 MD |
46 | |
47 | health_code_update(); | |
48 | ||
49 | /* | |
50 | * Allocate the string ourself to make sure we never exceed | |
51 | * LTTNG_PATH_MAX. | |
52 | */ | |
64803277 | 53 | pathname = calloc<char>(LTTNG_PATH_MAX); |
3b967712 MD |
54 | if (!pathname) { |
55 | goto error; | |
56 | } | |
57 | ||
58 | /* Get correct path name destination */ | |
28ab034a JG |
59 | if (consumer->type == CONSUMER_DST_NET && consumer->relay_major_version == 2 && |
60 | consumer->relay_minor_version < 11) { | |
61 | ret = snprintf(pathname, | |
62 | LTTNG_PATH_MAX, | |
63 | "%s%s/%s/%s", | |
64 | consumer->dst.net.base_dir, | |
65 | consumer->chunk_path, | |
66 | consumer->domain_subdir, | |
67 | session_path); | |
5da88b0f | 68 | *consumer_path_offset = 0; |
3b967712 | 69 | } else { |
28ab034a JG |
70 | ret = snprintf( |
71 | pathname, LTTNG_PATH_MAX, "%s/%s", consumer->domain_subdir, session_path); | |
5da88b0f | 72 | *consumer_path_offset = strlen(consumer->domain_subdir) + 1; |
3b967712 | 73 | } |
28ab034a | 74 | DBG3("Consumer trace path relative to current trace chunk: \"%s\"", pathname); |
3b967712 MD |
75 | if (ret < 0) { |
76 | PERROR("Failed to format channel path"); | |
77 | goto error; | |
78 | } else if (ret >= LTTNG_PATH_MAX) { | |
79 | ERR("Truncation occurred while formatting channel path"); | |
3b967712 MD |
80 | goto error; |
81 | } | |
82 | ||
83 | return pathname; | |
84 | error: | |
85 | free(pathname); | |
cd9adb8b | 86 | return nullptr; |
3b967712 MD |
87 | } |
88 | ||
52898cb1 DG |
89 | /* |
90 | * Send a data payload using a given consumer socket of size len. | |
91 | * | |
92 | * The consumer socket lock MUST be acquired before calling this since this | |
93 | * function can change the fd value. | |
94 | * | |
95 | * Return 0 on success else a negative value on error. | |
96 | */ | |
28ab034a | 97 | int consumer_socket_send(struct consumer_socket *socket, const void *msg, size_t len) |
52898cb1 DG |
98 | { |
99 | int fd; | |
100 | ssize_t size; | |
101 | ||
a0377dfe FD |
102 | LTTNG_ASSERT(socket); |
103 | LTTNG_ASSERT(socket->fd_ptr); | |
104 | LTTNG_ASSERT(msg); | |
52898cb1 DG |
105 | |
106 | /* Consumer socket is invalid. Stopping. */ | |
9363801e | 107 | fd = *socket->fd_ptr; |
52898cb1 DG |
108 | if (fd < 0) { |
109 | goto error; | |
110 | } | |
111 | ||
112 | size = lttcomm_send_unix_sock(fd, msg, len); | |
113 | if (size < 0) { | |
114 | /* The above call will print a PERROR on error. */ | |
115 | DBG("Error when sending data to consumer on sock %d", fd); | |
116 | /* | |
92db7cdc DG |
117 | * At this point, the socket is not usable anymore thus closing it and |
118 | * setting the file descriptor to -1 so it is not reused. | |
52898cb1 DG |
119 | */ |
120 | ||
121 | /* This call will PERROR on error. */ | |
122 | (void) lttcomm_close_unix_sock(fd); | |
9363801e | 123 | *socket->fd_ptr = -1; |
52898cb1 DG |
124 | goto error; |
125 | } | |
126 | ||
127 | return 0; | |
128 | ||
129 | error: | |
130 | return -1; | |
131 | } | |
132 | ||
133 | /* | |
134 | * Receive a data payload using a given consumer socket of size len. | |
135 | * | |
136 | * The consumer socket lock MUST be acquired before calling this since this | |
137 | * function can change the fd value. | |
138 | * | |
139 | * Return 0 on success else a negative value on error. | |
140 | */ | |
141 | int consumer_socket_recv(struct consumer_socket *socket, void *msg, size_t len) | |
142 | { | |
143 | int fd; | |
144 | ssize_t size; | |
145 | ||
a0377dfe FD |
146 | LTTNG_ASSERT(socket); |
147 | LTTNG_ASSERT(socket->fd_ptr); | |
148 | LTTNG_ASSERT(msg); | |
52898cb1 DG |
149 | |
150 | /* Consumer socket is invalid. Stopping. */ | |
9363801e | 151 | fd = *socket->fd_ptr; |
52898cb1 DG |
152 | if (fd < 0) { |
153 | goto error; | |
154 | } | |
155 | ||
156 | size = lttcomm_recv_unix_sock(fd, msg, len); | |
157 | if (size <= 0) { | |
158 | /* The above call will print a PERROR on error. */ | |
159 | DBG("Error when receiving data from the consumer socket %d", fd); | |
160 | /* | |
92db7cdc DG |
161 | * At this point, the socket is not usable anymore thus closing it and |
162 | * setting the file descriptor to -1 so it is not reused. | |
52898cb1 DG |
163 | */ |
164 | ||
165 | /* This call will PERROR on error. */ | |
166 | (void) lttcomm_close_unix_sock(fd); | |
9363801e | 167 | *socket->fd_ptr = -1; |
52898cb1 DG |
168 | goto error; |
169 | } | |
170 | ||
171 | return 0; | |
172 | ||
173 | error: | |
174 | return -1; | |
175 | } | |
176 | ||
f50f23d9 DG |
177 | /* |
178 | * Receive a reply command status message from the consumer. Consumer socket | |
179 | * lock MUST be acquired before calling this function. | |
180 | * | |
181 | * Return 0 on success, -1 on recv error or a negative lttng error code which | |
182 | * was possibly returned by the consumer. | |
183 | */ | |
184 | int consumer_recv_status_reply(struct consumer_socket *sock) | |
185 | { | |
186 | int ret; | |
187 | struct lttcomm_consumer_status_msg reply; | |
188 | ||
a0377dfe | 189 | LTTNG_ASSERT(sock); |
f50f23d9 | 190 | |
52898cb1 DG |
191 | ret = consumer_socket_recv(sock, &reply, sizeof(reply)); |
192 | if (ret < 0) { | |
f50f23d9 DG |
193 | goto end; |
194 | } | |
195 | ||
0c759fc9 | 196 | if (reply.ret_code == LTTCOMM_CONSUMERD_SUCCESS) { |
f50f23d9 DG |
197 | /* All good. */ |
198 | ret = 0; | |
199 | } else { | |
200 | ret = -reply.ret_code; | |
ffe60014 | 201 | DBG("Consumer ret code %d", ret); |
f50f23d9 DG |
202 | } |
203 | ||
204 | end: | |
205 | return ret; | |
206 | } | |
207 | ||
ffe60014 DG |
208 | /* |
209 | * Once the ASK_CHANNEL command is sent to the consumer, the channel | |
210 | * information are sent back. This call receives that data and populates key | |
211 | * and stream_count. | |
212 | * | |
213 | * On success return 0 and both key and stream_count are set. On error, a | |
214 | * negative value is sent back and both parameters are untouched. | |
215 | */ | |
216 | int consumer_recv_status_channel(struct consumer_socket *sock, | |
28ab034a JG |
217 | uint64_t *key, |
218 | unsigned int *stream_count) | |
ffe60014 DG |
219 | { |
220 | int ret; | |
221 | struct lttcomm_consumer_status_channel reply; | |
222 | ||
a0377dfe FD |
223 | LTTNG_ASSERT(sock); |
224 | LTTNG_ASSERT(stream_count); | |
225 | LTTNG_ASSERT(key); | |
ffe60014 | 226 | |
52898cb1 DG |
227 | ret = consumer_socket_recv(sock, &reply, sizeof(reply)); |
228 | if (ret < 0) { | |
ffe60014 DG |
229 | goto end; |
230 | } | |
231 | ||
232 | /* An error is possible so don't touch the key and stream_count. */ | |
0c759fc9 | 233 | if (reply.ret_code != LTTCOMM_CONSUMERD_SUCCESS) { |
ffe60014 DG |
234 | ret = -1; |
235 | goto end; | |
236 | } | |
237 | ||
238 | *key = reply.key; | |
239 | *stream_count = reply.stream_count; | |
0c759fc9 | 240 | ret = 0; |
ffe60014 DG |
241 | |
242 | end: | |
243 | return ret; | |
244 | } | |
245 | ||
2f77fc4b DG |
246 | /* |
247 | * Send destroy relayd command to consumer. | |
248 | * | |
249 | * On success return positive value. On error, negative value. | |
250 | */ | |
28ab034a | 251 | int consumer_send_destroy_relayd(struct consumer_socket *sock, struct consumer_output *consumer) |
2f77fc4b DG |
252 | { |
253 | int ret; | |
254 | struct lttcomm_consumer_msg msg; | |
255 | ||
a0377dfe FD |
256 | LTTNG_ASSERT(consumer); |
257 | LTTNG_ASSERT(sock); | |
2f77fc4b | 258 | |
9363801e | 259 | DBG2("Sending destroy relayd command to consumer sock %d", *sock->fd_ptr); |
2f77fc4b | 260 | |
53efb85a | 261 | memset(&msg, 0, sizeof(msg)); |
2f77fc4b DG |
262 | msg.cmd_type = LTTNG_CONSUMER_DESTROY_RELAYD; |
263 | msg.u.destroy_relayd.net_seq_idx = consumer->net_seq_index; | |
264 | ||
265 | pthread_mutex_lock(sock->lock); | |
52898cb1 | 266 | ret = consumer_socket_send(sock, &msg, sizeof(msg)); |
2f77fc4b | 267 | if (ret < 0) { |
52898cb1 | 268 | goto error; |
2f77fc4b DG |
269 | } |
270 | ||
f50f23d9 DG |
271 | /* Don't check the return value. The caller will do it. */ |
272 | ret = consumer_recv_status_reply(sock); | |
273 | ||
2f77fc4b DG |
274 | DBG2("Consumer send destroy relayd command done"); |
275 | ||
276 | error: | |
52898cb1 | 277 | pthread_mutex_unlock(sock->lock); |
2f77fc4b DG |
278 | return ret; |
279 | } | |
280 | ||
281 | /* | |
282 | * For each consumer socket in the consumer output object, send a destroy | |
283 | * relayd command. | |
284 | */ | |
285 | void consumer_output_send_destroy_relayd(struct consumer_output *consumer) | |
286 | { | |
2f77fc4b DG |
287 | struct lttng_ht_iter iter; |
288 | struct consumer_socket *socket; | |
289 | ||
a0377dfe | 290 | LTTNG_ASSERT(consumer); |
2f77fc4b DG |
291 | |
292 | /* Destroy any relayd connection */ | |
6dc3064a | 293 | if (consumer->type == CONSUMER_DST_NET) { |
2f77fc4b | 294 | rcu_read_lock(); |
28ab034a | 295 | cds_lfht_for_each_entry (consumer->socks->ht, &iter.iter, socket, node.node) { |
c617c0c6 MD |
296 | int ret; |
297 | ||
2f77fc4b DG |
298 | /* Send destroy relayd command */ |
299 | ret = consumer_send_destroy_relayd(socket, consumer); | |
300 | if (ret < 0) { | |
c5c45efa | 301 | DBG("Unable to send destroy relayd command to consumer"); |
2f77fc4b DG |
302 | /* Continue since we MUST delete everything at this point. */ |
303 | } | |
304 | } | |
305 | rcu_read_unlock(); | |
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 | |
cd9adb8b | 322 | if (output == nullptr || data->cmd_sock < 0) { |
a4b92340 DG |
323 | /* |
324 | * Not an error. Possible there is simply not spawned consumer or it's | |
325 | * disabled for the tracing session asking the socket. | |
326 | */ | |
327 | goto error; | |
328 | } | |
329 | ||
330 | rcu_read_lock(); | |
331 | socket = consumer_find_socket(data->cmd_sock, output); | |
332 | rcu_read_unlock(); | |
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 DG |
341 | socket->lock = &data->lock; |
342 | rcu_read_lock(); | |
343 | consumer_add_socket(socket, output); | |
344 | rcu_read_unlock(); | |
345 | } | |
346 | ||
6dc3064a DG |
347 | socket->type = data->type; |
348 | ||
28ab034a | 349 | DBG3("Consumer socket created (fd: %d) and added to output", data->cmd_sock); |
a4b92340 DG |
350 | |
351 | error: | |
352 | return ret; | |
353 | } | |
354 | ||
7972aab2 DG |
355 | /* |
356 | * Return the consumer socket from the given consumer output with the right | |
357 | * bitness. On error, returns NULL. | |
358 | * | |
359 | * The caller MUST acquire a rcu read side lock and keep it until the socket | |
360 | * object reference is not needed anymore. | |
361 | */ | |
362 | struct consumer_socket *consumer_find_socket_by_bitness(int bits, | |
28ab034a | 363 | const struct consumer_output *consumer) |
7972aab2 DG |
364 | { |
365 | int consumer_fd; | |
cd9adb8b | 366 | struct consumer_socket *socket = nullptr; |
7972aab2 | 367 | |
48b7cdc2 FD |
368 | ASSERT_RCU_READ_LOCKED(); |
369 | ||
7972aab2 DG |
370 | switch (bits) { |
371 | case 64: | |
412d7227 | 372 | consumer_fd = uatomic_read(&the_ust_consumerd64_fd); |
7972aab2 DG |
373 | break; |
374 | case 32: | |
412d7227 | 375 | consumer_fd = uatomic_read(&the_ust_consumerd32_fd); |
7972aab2 DG |
376 | break; |
377 | default: | |
a0377dfe | 378 | abort(); |
7972aab2 DG |
379 | goto end; |
380 | } | |
381 | ||
382 | socket = consumer_find_socket(consumer_fd, consumer); | |
383 | if (!socket) { | |
28ab034a | 384 | ERR("Consumer socket fd %d not found in consumer obj %p", consumer_fd, consumer); |
7972aab2 DG |
385 | } |
386 | ||
387 | end: | |
388 | return socket; | |
389 | } | |
390 | ||
173af62f DG |
391 | /* |
392 | * Find a consumer_socket in a consumer_output hashtable. Read side lock must | |
393 | * be acquired before calling this function and across use of the | |
394 | * returned consumer_socket. | |
395 | */ | |
28ab034a | 396 | struct consumer_socket *consumer_find_socket(int key, const struct consumer_output *consumer) |
173af62f DG |
397 | { |
398 | struct lttng_ht_iter iter; | |
399 | struct lttng_ht_node_ulong *node; | |
cd9adb8b | 400 | struct consumer_socket *socket = nullptr; |
173af62f | 401 | |
48b7cdc2 FD |
402 | ASSERT_RCU_READ_LOCKED(); |
403 | ||
173af62f | 404 | /* Negative keys are lookup failures */ |
cd9adb8b JG |
405 | if (key < 0 || consumer == nullptr) { |
406 | return nullptr; | |
173af62f DG |
407 | } |
408 | ||
28ab034a | 409 | lttng_ht_lookup(consumer->socks, (void *) ((unsigned long) key), &iter); |
173af62f | 410 | node = lttng_ht_iter_get_node_ulong(&iter); |
cd9adb8b | 411 | if (node != nullptr) { |
0114db0e | 412 | socket = lttng::utils::container_of(node, &consumer_socket::node); |
173af62f DG |
413 | } |
414 | ||
415 | return socket; | |
416 | } | |
417 | ||
418 | /* | |
419 | * Allocate a new consumer_socket and return the pointer. | |
420 | */ | |
4ce514c4 | 421 | struct consumer_socket *consumer_allocate_socket(int *fd) |
173af62f | 422 | { |
cd9adb8b | 423 | struct consumer_socket *socket = nullptr; |
173af62f | 424 | |
a0377dfe | 425 | LTTNG_ASSERT(fd); |
4ce514c4 | 426 | |
64803277 | 427 | socket = zmalloc<consumer_socket>(); |
cd9adb8b | 428 | if (socket == nullptr) { |
173af62f DG |
429 | PERROR("zmalloc consumer socket"); |
430 | goto error; | |
431 | } | |
432 | ||
9363801e | 433 | socket->fd_ptr = fd; |
4ce514c4 | 434 | lttng_ht_node_init_ulong(&socket->node, *fd); |
173af62f DG |
435 | |
436 | error: | |
437 | return socket; | |
438 | } | |
439 | ||
440 | /* | |
441 | * Add consumer socket to consumer output object. Read side lock must be | |
442 | * acquired before calling this function. | |
443 | */ | |
28ab034a | 444 | void consumer_add_socket(struct consumer_socket *sock, struct consumer_output *consumer) |
173af62f | 445 | { |
a0377dfe FD |
446 | LTTNG_ASSERT(sock); |
447 | LTTNG_ASSERT(consumer); | |
48b7cdc2 | 448 | ASSERT_RCU_READ_LOCKED(); |
173af62f DG |
449 | |
450 | lttng_ht_add_unique_ulong(consumer->socks, &sock->node); | |
451 | } | |
452 | ||
453 | /* | |
348a81dc | 454 | * Delete consumer socket to consumer output object. Read side lock must be |
173af62f DG |
455 | * acquired before calling this function. |
456 | */ | |
28ab034a | 457 | void consumer_del_socket(struct consumer_socket *sock, struct consumer_output *consumer) |
173af62f DG |
458 | { |
459 | int ret; | |
460 | struct lttng_ht_iter iter; | |
461 | ||
a0377dfe FD |
462 | LTTNG_ASSERT(sock); |
463 | LTTNG_ASSERT(consumer); | |
48b7cdc2 | 464 | ASSERT_RCU_READ_LOCKED(); |
173af62f DG |
465 | |
466 | iter.iter.node = &sock->node.node; | |
467 | ret = lttng_ht_del(consumer->socks, &iter); | |
a0377dfe | 468 | LTTNG_ASSERT(!ret); |
173af62f DG |
469 | } |
470 | ||
471 | /* | |
472 | * RCU destroy call function. | |
473 | */ | |
474 | static void destroy_socket_rcu(struct rcu_head *head) | |
475 | { | |
476 | struct lttng_ht_node_ulong *node = | |
0114db0e | 477 | lttng::utils::container_of(head, <tng_ht_node_ulong::head); |
28ab034a | 478 | struct consumer_socket *socket = lttng::utils::container_of(node, &consumer_socket::node); |
173af62f DG |
479 | |
480 | free(socket); | |
481 | } | |
482 | ||
483 | /* | |
48b7cdc2 FD |
484 | * Destroy and free socket pointer in a call RCU. The call must either: |
485 | * - have acquired the read side lock before calling this function, or | |
486 | * - guarantee the validity of the `struct consumer_socket` object for the | |
487 | * duration of the call. | |
173af62f DG |
488 | */ |
489 | void consumer_destroy_socket(struct consumer_socket *sock) | |
490 | { | |
a0377dfe | 491 | LTTNG_ASSERT(sock); |
173af62f DG |
492 | |
493 | /* | |
494 | * We DO NOT close the file descriptor here since it is global to the | |
2f77fc4b DG |
495 | * session daemon and is closed only if the consumer dies or a custom |
496 | * consumer was registered, | |
173af62f | 497 | */ |
2f77fc4b | 498 | if (sock->registered) { |
9363801e DG |
499 | DBG3("Consumer socket was registered. Closing fd %d", *sock->fd_ptr); |
500 | lttcomm_close_unix_sock(*sock->fd_ptr); | |
2f77fc4b | 501 | } |
173af62f DG |
502 | |
503 | call_rcu(&sock->node.head, destroy_socket_rcu); | |
504 | } | |
505 | ||
00e2e675 DG |
506 | /* |
507 | * Allocate and assign data to a consumer_output object. | |
508 | * | |
509 | * Return pointer to structure. | |
510 | */ | |
511 | struct consumer_output *consumer_create_output(enum consumer_dst_type type) | |
512 | { | |
cd9adb8b | 513 | struct consumer_output *output = nullptr; |
00e2e675 | 514 | |
64803277 | 515 | output = zmalloc<consumer_output>(); |
cd9adb8b | 516 | if (output == nullptr) { |
00e2e675 DG |
517 | PERROR("zmalloc consumer_output"); |
518 | goto error; | |
519 | } | |
520 | ||
521 | /* By default, consumer output is enabled */ | |
522 | output->enabled = 1; | |
523 | output->type = type; | |
d88aee68 | 524 | output->net_seq_index = (uint64_t) -1ULL; |
6addfa37 | 525 | urcu_ref_init(&output->ref); |
173af62f DG |
526 | |
527 | output->socks = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG); | |
00e2e675 DG |
528 | |
529 | error: | |
530 | return output; | |
531 | } | |
532 | ||
af706bb7 DG |
533 | /* |
534 | * Iterate over the consumer output socket hash table and destroy them. The | |
535 | * socket file descriptor are only closed if the consumer output was | |
536 | * registered meaning it's an external consumer. | |
537 | */ | |
538 | void consumer_destroy_output_sockets(struct consumer_output *obj) | |
539 | { | |
540 | struct lttng_ht_iter iter; | |
541 | struct consumer_socket *socket; | |
542 | ||
543 | if (!obj->socks) { | |
544 | return; | |
545 | } | |
546 | ||
547 | rcu_read_lock(); | |
28ab034a | 548 | cds_lfht_for_each_entry (obj->socks->ht, &iter.iter, socket, node.node) { |
af706bb7 DG |
549 | consumer_del_socket(socket, obj); |
550 | consumer_destroy_socket(socket); | |
551 | } | |
552 | rcu_read_unlock(); | |
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 | |
b82c5c4d | 639 | rcu_read_lock(); |
28ab034a | 640 | cds_lfht_for_each_entry (src->socks->ht, &iter.iter, socket, node.node) { |
6dc3064a | 641 | /* Ignore socket that are already there. */ |
9363801e | 642 | copy_sock = consumer_find_socket(*socket->fd_ptr, dst); |
6dc3064a DG |
643 | if (copy_sock) { |
644 | continue; | |
645 | } | |
646 | ||
173af62f | 647 | /* Create new socket object. */ |
9363801e | 648 | copy_sock = consumer_allocate_socket(socket->fd_ptr); |
cd9adb8b | 649 | if (copy_sock == nullptr) { |
b82c5c4d | 650 | rcu_read_unlock(); |
6dc3064a DG |
651 | ret = -ENOMEM; |
652 | goto error; | |
173af62f DG |
653 | } |
654 | ||
09a90bcd | 655 | copy_sock->registered = socket->registered; |
6dc3064a DG |
656 | /* |
657 | * This is valid because this lock is shared accross all consumer | |
658 | * object being the global lock of the consumer data structure of the | |
659 | * session daemon. | |
660 | */ | |
173af62f | 661 | copy_sock->lock = socket->lock; |
6dc3064a | 662 | consumer_add_socket(copy_sock, dst); |
173af62f | 663 | } |
b82c5c4d | 664 | rcu_read_unlock(); |
173af62f | 665 | |
00e2e675 | 666 | error: |
6dc3064a | 667 | return ret; |
00e2e675 DG |
668 | } |
669 | ||
670 | /* | |
b178f53e | 671 | * Set network URI to the consumer output. |
00e2e675 | 672 | * |
ad20f474 DG |
673 | * Return 0 on success. Return 1 if the URI were equal. Else, negative value on |
674 | * error. | |
00e2e675 | 675 | */ |
b178f53e | 676 | int consumer_set_network_uri(const struct ltt_session *session, |
28ab034a JG |
677 | struct consumer_output *output, |
678 | struct lttng_uri *uri) | |
00e2e675 DG |
679 | { |
680 | int ret; | |
cd9adb8b | 681 | struct lttng_uri *dst_uri = nullptr; |
00e2e675 DG |
682 | |
683 | /* Code flow error safety net. */ | |
a0377dfe FD |
684 | LTTNG_ASSERT(output); |
685 | LTTNG_ASSERT(uri); | |
00e2e675 DG |
686 | |
687 | switch (uri->stype) { | |
688 | case LTTNG_STREAM_CONTROL: | |
b178f53e JG |
689 | dst_uri = &output->dst.net.control; |
690 | output->dst.net.control_isset = 1; | |
00e2e675 DG |
691 | if (uri->port == 0) { |
692 | /* Assign default port. */ | |
693 | uri->port = DEFAULT_NETWORK_CONTROL_PORT; | |
a74934ba | 694 | } else { |
28ab034a | 695 | if (output->dst.net.data_isset && uri->port == output->dst.net.data.port) { |
a74934ba DG |
696 | ret = -LTTNG_ERR_INVALID; |
697 | goto error; | |
698 | } | |
00e2e675 | 699 | } |
ad20f474 | 700 | DBG3("Consumer control URI set with port %d", uri->port); |
00e2e675 DG |
701 | break; |
702 | case LTTNG_STREAM_DATA: | |
b178f53e JG |
703 | dst_uri = &output->dst.net.data; |
704 | output->dst.net.data_isset = 1; | |
00e2e675 DG |
705 | if (uri->port == 0) { |
706 | /* Assign default port. */ | |
707 | uri->port = DEFAULT_NETWORK_DATA_PORT; | |
a74934ba | 708 | } else { |
28ab034a JG |
709 | if (output->dst.net.control_isset && |
710 | uri->port == output->dst.net.control.port) { | |
a74934ba DG |
711 | ret = -LTTNG_ERR_INVALID; |
712 | goto error; | |
713 | } | |
00e2e675 | 714 | } |
ad20f474 | 715 | DBG3("Consumer data URI set with port %d", uri->port); |
00e2e675 DG |
716 | break; |
717 | default: | |
718 | ERR("Set network uri type unknown %d", uri->stype); | |
a74934ba | 719 | ret = -LTTNG_ERR_INVALID; |
00e2e675 DG |
720 | goto error; |
721 | } | |
722 | ||
723 | ret = uri_compare(dst_uri, uri); | |
724 | if (!ret) { | |
725 | /* Same URI, don't touch it and return success. */ | |
726 | DBG3("URI network compare are the same"); | |
ad20f474 | 727 | goto equal; |
00e2e675 DG |
728 | } |
729 | ||
730 | /* URIs were not equal, replacing it. */ | |
00e2e675 | 731 | memcpy(dst_uri, uri, sizeof(struct lttng_uri)); |
b178f53e JG |
732 | output->type = CONSUMER_DST_NET; |
733 | if (dst_uri->stype != LTTNG_STREAM_CONTROL) { | |
734 | /* Only the control uri needs to contain the path. */ | |
735 | goto end; | |
736 | } | |
00e2e675 | 737 | |
b178f53e JG |
738 | /* |
739 | * If the user has specified a subdir as part of the control | |
740 | * URL, the session's base output directory is: | |
741 | * /RELAYD_OUTPUT_PATH/HOSTNAME/USER_SPECIFIED_DIR | |
742 | * | |
743 | * Hence, the "base_dir" from which all stream files and | |
744 | * session rotation chunks are created takes the form | |
745 | * /HOSTNAME/USER_SPECIFIED_DIR | |
746 | * | |
747 | * If the user has not specified an output directory as part of | |
748 | * the control URL, the base output directory has the form: | |
749 | * /RELAYD_OUTPUT_PATH/HOSTNAME/SESSION_NAME-CREATION_TIME | |
750 | * | |
751 | * Hence, the "base_dir" from which all stream files and | |
752 | * session rotation chunks are created takes the form | |
753 | * /HOSTNAME/SESSION_NAME-CREATION_TIME | |
754 | * | |
755 | * Note that automatically generated session names already | |
756 | * contain the session's creation time. In that case, the | |
757 | * creation time is omitted to prevent it from being duplicated | |
758 | * in the final directory hierarchy. | |
759 | */ | |
760 | if (*uri->subdir) { | |
761 | if (strstr(uri->subdir, "../")) { | |
762 | ERR("Network URI subdirs are not allowed to walk up the path hierarchy"); | |
763 | ret = -LTTNG_ERR_INVALID; | |
00e2e675 DG |
764 | goto error; |
765 | } | |
b178f53e | 766 | ret = snprintf(output->dst.net.base_dir, |
28ab034a JG |
767 | sizeof(output->dst.net.base_dir), |
768 | "/%s/%s/", | |
769 | session->hostname, | |
770 | uri->subdir); | |
b178f53e JG |
771 | } else { |
772 | if (session->has_auto_generated_name) { | |
773 | ret = snprintf(output->dst.net.base_dir, | |
28ab034a JG |
774 | sizeof(output->dst.net.base_dir), |
775 | "/%s/%s/", | |
776 | session->hostname, | |
777 | session->name); | |
b178f53e JG |
778 | } else { |
779 | char session_creation_datetime[16]; | |
780 | size_t strftime_ret; | |
781 | struct tm *timeinfo; | |
00e2e675 | 782 | |
b178f53e JG |
783 | timeinfo = localtime(&session->creation_time); |
784 | if (!timeinfo) { | |
785 | ret = -LTTNG_ERR_FATAL; | |
786 | goto error; | |
787 | } | |
788 | strftime_ret = strftime(session_creation_datetime, | |
28ab034a JG |
789 | sizeof(session_creation_datetime), |
790 | "%Y%m%d-%H%M%S", | |
791 | timeinfo); | |
b178f53e JG |
792 | if (strftime_ret == 0) { |
793 | ERR("Failed to format session creation timestamp while setting network URI"); | |
794 | ret = -LTTNG_ERR_FATAL; | |
795 | goto error; | |
796 | } | |
797 | ret = snprintf(output->dst.net.base_dir, | |
28ab034a JG |
798 | sizeof(output->dst.net.base_dir), |
799 | "/%s/%s-%s/", | |
800 | session->hostname, | |
801 | session->name, | |
802 | session_creation_datetime); | |
bfc6eff0 | 803 | } |
00e2e675 | 804 | } |
b178f53e JG |
805 | if (ret >= sizeof(output->dst.net.base_dir)) { |
806 | ret = -LTTNG_ERR_INVALID; | |
807 | ERR("Truncation occurred while setting network output base directory"); | |
808 | goto error; | |
809 | } else if (ret == -1) { | |
810 | ret = -LTTNG_ERR_INVALID; | |
811 | PERROR("Error occurred while setting network output base directory"); | |
812 | goto error; | |
813 | } | |
814 | ||
28ab034a | 815 | DBG3("Consumer set network uri base_dir path %s", output->dst.net.base_dir); |
00e2e675 | 816 | |
b178f53e | 817 | end: |
00e2e675 | 818 | return 0; |
ad20f474 DG |
819 | equal: |
820 | return 1; | |
00e2e675 | 821 | error: |
a74934ba | 822 | return ret; |
00e2e675 DG |
823 | } |
824 | ||
825 | /* | |
826 | * Send file descriptor to consumer via sock. | |
9a318688 JG |
827 | * |
828 | * The consumer socket lock must be held by the caller. | |
00e2e675 | 829 | */ |
28ab034a | 830 | int consumer_send_fds(struct consumer_socket *sock, const int *fds, size_t nb_fd) |
00e2e675 DG |
831 | { |
832 | int ret; | |
833 | ||
a0377dfe FD |
834 | LTTNG_ASSERT(fds); |
835 | LTTNG_ASSERT(sock); | |
836 | LTTNG_ASSERT(nb_fd > 0); | |
837 | LTTNG_ASSERT(pthread_mutex_trylock(sock->lock) == EBUSY); | |
00e2e675 | 838 | |
9363801e | 839 | ret = lttcomm_send_fds_unix_sock(*sock->fd_ptr, fds, nb_fd); |
00e2e675 | 840 | if (ret < 0) { |
3448e266 | 841 | /* The above call will print a PERROR on error. */ |
9363801e | 842 | DBG("Error when sending consumer fds on sock %d", *sock->fd_ptr); |
00e2e675 DG |
843 | goto error; |
844 | } | |
845 | ||
f50f23d9 | 846 | ret = consumer_recv_status_reply(sock); |
00e2e675 DG |
847 | error: |
848 | return ret; | |
849 | } | |
850 | ||
ffe60014 DG |
851 | /* |
852 | * Consumer send communication message structure to consumer. | |
9a318688 JG |
853 | * |
854 | * The consumer socket lock must be held by the caller. | |
ffe60014 | 855 | */ |
28ab034a | 856 | int consumer_send_msg(struct consumer_socket *sock, const struct lttcomm_consumer_msg *msg) |
ffe60014 DG |
857 | { |
858 | int ret; | |
859 | ||
a0377dfe FD |
860 | LTTNG_ASSERT(msg); |
861 | LTTNG_ASSERT(sock); | |
862 | LTTNG_ASSERT(pthread_mutex_trylock(sock->lock) == EBUSY); | |
ffe60014 | 863 | |
52898cb1 | 864 | ret = consumer_socket_send(sock, msg, sizeof(struct lttcomm_consumer_msg)); |
ffe60014 | 865 | if (ret < 0) { |
ffe60014 DG |
866 | goto error; |
867 | } | |
868 | ||
869 | ret = consumer_recv_status_reply(sock); | |
870 | ||
871 | error: | |
872 | return ret; | |
873 | } | |
874 | ||
00e2e675 DG |
875 | /* |
876 | * Consumer send channel communication message structure to consumer. | |
9a318688 JG |
877 | * |
878 | * The consumer socket lock must be held by the caller. | |
00e2e675 | 879 | */ |
28ab034a | 880 | int consumer_send_channel(struct consumer_socket *sock, struct lttcomm_consumer_msg *msg) |
00e2e675 DG |
881 | { |
882 | int ret; | |
883 | ||
a0377dfe FD |
884 | LTTNG_ASSERT(msg); |
885 | LTTNG_ASSERT(sock); | |
00e2e675 | 886 | |
52898cb1 | 887 | ret = consumer_send_msg(sock, msg); |
00e2e675 | 888 | if (ret < 0) { |
00e2e675 DG |
889 | goto error; |
890 | } | |
891 | ||
892 | error: | |
893 | return ret; | |
894 | } | |
895 | ||
ffe60014 DG |
896 | /* |
897 | * Populate the given consumer msg structure with the ask_channel command | |
898 | * information. | |
899 | */ | |
900 | void consumer_init_ask_channel_comm_msg(struct lttcomm_consumer_msg *msg, | |
28ab034a JG |
901 | uint64_t subbuf_size, |
902 | uint64_t num_subbuf, | |
903 | int overwrite, | |
904 | unsigned int switch_timer_interval, | |
905 | unsigned int read_timer_interval, | |
906 | unsigned int live_timer_interval, | |
907 | bool is_in_live_session, | |
908 | unsigned int monitor_timer_interval, | |
909 | int output, | |
910 | int type, | |
911 | uint64_t session_id, | |
912 | const char *pathname, | |
913 | const char *name, | |
914 | uint64_t relayd_id, | |
915 | uint64_t key, | |
916 | const lttng_uuid& uuid, | |
917 | uint32_t chan_id, | |
918 | uint64_t tracefile_size, | |
919 | uint64_t tracefile_count, | |
920 | uint64_t session_id_per_pid, | |
921 | unsigned int monitor, | |
922 | uint32_t ust_app_uid, | |
923 | int64_t blocking_timeout, | |
924 | const char *root_shm_path, | |
925 | const char *shm_path, | |
926 | struct lttng_trace_chunk *trace_chunk, | |
927 | const struct lttng_credentials *buffer_credentials) | |
ffe60014 | 928 | { |
a0377dfe | 929 | LTTNG_ASSERT(msg); |
ffe60014 | 930 | |
26c468bb | 931 | /* Zeroed structure */ |
ffe60014 | 932 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); |
d2956687 JG |
933 | msg->u.ask_channel.buffer_credentials.uid = UINT32_MAX; |
934 | msg->u.ask_channel.buffer_credentials.gid = UINT32_MAX; | |
935 | ||
26c468bb | 936 | if (trace_chunk) { |
d2956687 JG |
937 | uint64_t chunk_id; |
938 | enum lttng_trace_chunk_status chunk_status; | |
d2956687 JG |
939 | |
940 | chunk_status = lttng_trace_chunk_get_id(trace_chunk, &chunk_id); | |
a0377dfe | 941 | LTTNG_ASSERT(chunk_status == LTTNG_TRACE_CHUNK_STATUS_OK); |
d2956687 | 942 | LTTNG_OPTIONAL_SET(&msg->u.ask_channel.chunk_id, chunk_id); |
26c468bb | 943 | } |
28ab034a JG |
944 | msg->u.ask_channel.buffer_credentials.uid = lttng_credentials_get_uid(buffer_credentials); |
945 | msg->u.ask_channel.buffer_credentials.gid = lttng_credentials_get_gid(buffer_credentials); | |
ffe60014 DG |
946 | |
947 | msg->cmd_type = LTTNG_CONSUMER_ASK_CHANNEL_CREATION; | |
948 | msg->u.ask_channel.subbuf_size = subbuf_size; | |
28ab034a | 949 | msg->u.ask_channel.num_subbuf = num_subbuf; |
ffe60014 DG |
950 | msg->u.ask_channel.overwrite = overwrite; |
951 | msg->u.ask_channel.switch_timer_interval = switch_timer_interval; | |
952 | msg->u.ask_channel.read_timer_interval = read_timer_interval; | |
ecc48a90 | 953 | msg->u.ask_channel.live_timer_interval = live_timer_interval; |
a2814ea7 | 954 | msg->u.ask_channel.is_live = is_in_live_session; |
e9404c27 | 955 | msg->u.ask_channel.monitor_timer_interval = monitor_timer_interval; |
ffe60014 DG |
956 | msg->u.ask_channel.output = output; |
957 | msg->u.ask_channel.type = type; | |
958 | msg->u.ask_channel.session_id = session_id; | |
1950109e | 959 | msg->u.ask_channel.session_id_per_pid = session_id_per_pid; |
ffe60014 DG |
960 | msg->u.ask_channel.relayd_id = relayd_id; |
961 | msg->u.ask_channel.key = key; | |
7972aab2 | 962 | msg->u.ask_channel.chan_id = chan_id; |
1624d5b7 JD |
963 | msg->u.ask_channel.tracefile_size = tracefile_size; |
964 | msg->u.ask_channel.tracefile_count = tracefile_count; | |
2bba9e53 | 965 | msg->u.ask_channel.monitor = monitor; |
567eb353 | 966 | msg->u.ask_channel.ust_app_uid = ust_app_uid; |
491d1539 | 967 | msg->u.ask_channel.blocking_timeout = blocking_timeout; |
ffe60014 | 968 | |
328c2fe7 | 969 | std::copy(uuid.begin(), uuid.end(), msg->u.ask_channel.uuid); |
ffe60014 | 970 | |
10a50311 | 971 | if (pathname) { |
28ab034a JG |
972 | strncpy(msg->u.ask_channel.pathname, pathname, sizeof(msg->u.ask_channel.pathname)); |
973 | msg->u.ask_channel.pathname[sizeof(msg->u.ask_channel.pathname) - 1] = '\0'; | |
10a50311 | 974 | } |
ffe60014 DG |
975 | |
976 | strncpy(msg->u.ask_channel.name, name, sizeof(msg->u.ask_channel.name)); | |
977 | msg->u.ask_channel.name[sizeof(msg->u.ask_channel.name) - 1] = '\0'; | |
d7ba1388 | 978 | |
3d071855 | 979 | if (root_shm_path) { |
28ab034a JG |
980 | strncpy(msg->u.ask_channel.root_shm_path, |
981 | root_shm_path, | |
3d071855 | 982 | sizeof(msg->u.ask_channel.root_shm_path)); |
28ab034a JG |
983 | msg->u.ask_channel.root_shm_path[sizeof(msg->u.ask_channel.root_shm_path) - 1] = |
984 | '\0'; | |
3d071855 | 985 | } |
d7ba1388 | 986 | if (shm_path) { |
28ab034a | 987 | strncpy(msg->u.ask_channel.shm_path, shm_path, sizeof(msg->u.ask_channel.shm_path)); |
d7ba1388 MD |
988 | msg->u.ask_channel.shm_path[sizeof(msg->u.ask_channel.shm_path) - 1] = '\0'; |
989 | } | |
ffe60014 DG |
990 | } |
991 | ||
00e2e675 DG |
992 | /* |
993 | * Init channel communication message structure. | |
994 | */ | |
638e7b4e | 995 | void consumer_init_add_channel_comm_msg(struct lttcomm_consumer_msg *msg, |
28ab034a JG |
996 | uint64_t channel_key, |
997 | uint64_t session_id, | |
998 | const char *pathname, | |
999 | uint64_t relayd_id, | |
1000 | const char *name, | |
1001 | unsigned int nb_init_streams, | |
1002 | enum lttng_event_output output, | |
1003 | int type, | |
1004 | uint64_t tracefile_size, | |
1005 | uint64_t tracefile_count, | |
1006 | unsigned int monitor, | |
1007 | unsigned int live_timer_interval, | |
1008 | bool is_in_live_session, | |
1009 | unsigned int monitor_timer_interval, | |
1010 | struct lttng_trace_chunk *trace_chunk) | |
00e2e675 | 1011 | { |
a0377dfe | 1012 | LTTNG_ASSERT(msg); |
00e2e675 | 1013 | |
00e2e675 DG |
1014 | /* Zeroed structure */ |
1015 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
1016 | ||
26c468bb | 1017 | if (trace_chunk) { |
d2956687 JG |
1018 | uint64_t chunk_id; |
1019 | enum lttng_trace_chunk_status chunk_status; | |
1020 | ||
1021 | chunk_status = lttng_trace_chunk_get_id(trace_chunk, &chunk_id); | |
a0377dfe | 1022 | LTTNG_ASSERT(chunk_status == LTTNG_TRACE_CHUNK_STATUS_OK); |
d2956687 | 1023 | LTTNG_OPTIONAL_SET(&msg->u.channel.chunk_id, chunk_id); |
26c468bb | 1024 | } |
d2956687 | 1025 | |
00e2e675 | 1026 | /* Send channel */ |
638e7b4e | 1027 | msg->cmd_type = LTTNG_CONSUMER_ADD_CHANNEL; |
00e2e675 | 1028 | msg->u.channel.channel_key = channel_key; |
ffe60014 | 1029 | msg->u.channel.session_id = session_id; |
ffe60014 | 1030 | msg->u.channel.relayd_id = relayd_id; |
c30aaa51 | 1031 | msg->u.channel.nb_init_streams = nb_init_streams; |
ffe60014 DG |
1032 | msg->u.channel.output = output; |
1033 | msg->u.channel.type = type; | |
1624d5b7 JD |
1034 | msg->u.channel.tracefile_size = tracefile_size; |
1035 | msg->u.channel.tracefile_count = tracefile_count; | |
2bba9e53 | 1036 | msg->u.channel.monitor = monitor; |
ecc48a90 | 1037 | msg->u.channel.live_timer_interval = live_timer_interval; |
a2814ea7 | 1038 | msg->u.channel.is_live = is_in_live_session; |
e9404c27 | 1039 | msg->u.channel.monitor_timer_interval = monitor_timer_interval; |
ffe60014 | 1040 | |
28ab034a | 1041 | strncpy(msg->u.channel.pathname, pathname, sizeof(msg->u.channel.pathname)); |
ffe60014 DG |
1042 | msg->u.channel.pathname[sizeof(msg->u.channel.pathname) - 1] = '\0'; |
1043 | ||
1044 | strncpy(msg->u.channel.name, name, sizeof(msg->u.channel.name)); | |
1045 | msg->u.channel.name[sizeof(msg->u.channel.name) - 1] = '\0'; | |
00e2e675 DG |
1046 | } |
1047 | ||
1048 | /* | |
1049 | * Init stream communication message structure. | |
1050 | */ | |
e098433c | 1051 | void consumer_init_add_stream_comm_msg(struct lttcomm_consumer_msg *msg, |
28ab034a JG |
1052 | uint64_t channel_key, |
1053 | uint64_t stream_key, | |
1054 | int32_t cpu) | |
00e2e675 | 1055 | { |
a0377dfe | 1056 | LTTNG_ASSERT(msg); |
00e2e675 DG |
1057 | |
1058 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
1059 | ||
e098433c | 1060 | msg->cmd_type = LTTNG_CONSUMER_ADD_STREAM; |
00e2e675 DG |
1061 | msg->u.stream.channel_key = channel_key; |
1062 | msg->u.stream.stream_key = stream_key; | |
ffe60014 | 1063 | msg->u.stream.cpu = cpu; |
00e2e675 DG |
1064 | } |
1065 | ||
a4baae1b | 1066 | void consumer_init_streams_sent_comm_msg(struct lttcomm_consumer_msg *msg, |
28ab034a JG |
1067 | enum lttng_consumer_command cmd, |
1068 | uint64_t channel_key, | |
1069 | uint64_t net_seq_idx) | |
a4baae1b | 1070 | { |
a0377dfe | 1071 | LTTNG_ASSERT(msg); |
a4baae1b JD |
1072 | |
1073 | memset(msg, 0, sizeof(struct lttcomm_consumer_msg)); | |
1074 | ||
1075 | msg->cmd_type = cmd; | |
1076 | msg->u.sent_streams.channel_key = channel_key; | |
1077 | msg->u.sent_streams.net_seq_idx = net_seq_idx; | |
1078 | } | |
1079 | ||
00e2e675 DG |
1080 | /* |
1081 | * Send stream communication structure to the consumer. | |
1082 | */ | |
f50f23d9 | 1083 | int consumer_send_stream(struct consumer_socket *sock, |
28ab034a JG |
1084 | struct consumer_output *dst, |
1085 | struct lttcomm_consumer_msg *msg, | |
1086 | const int *fds, | |
1087 | size_t nb_fd) | |
00e2e675 DG |
1088 | { |
1089 | int ret; | |
1090 | ||
a0377dfe FD |
1091 | LTTNG_ASSERT(msg); |
1092 | LTTNG_ASSERT(dst); | |
1093 | LTTNG_ASSERT(sock); | |
1094 | LTTNG_ASSERT(fds); | |
00e2e675 | 1095 | |
52898cb1 | 1096 | ret = consumer_send_msg(sock, msg); |
f50f23d9 DG |
1097 | if (ret < 0) { |
1098 | goto error; | |
1099 | } | |
1100 | ||
00e2e675 DG |
1101 | ret = consumer_send_fds(sock, fds, nb_fd); |
1102 | if (ret < 0) { | |
1103 | goto error; | |
1104 | } | |
1105 | ||
1106 | error: | |
1107 | return ret; | |
1108 | } | |
37278a1e DG |
1109 | |
1110 | /* | |
1111 | * Send relayd socket to consumer associated with a session name. | |
1112 | * | |
43fade62 JG |
1113 | * The consumer socket lock must be held by the caller. |
1114 | * | |
37278a1e DG |
1115 | * On success return positive value. On error, negative value. |
1116 | */ | |
f50f23d9 | 1117 | int consumer_send_relayd_socket(struct consumer_socket *consumer_sock, |
28ab034a JG |
1118 | struct lttcomm_relayd_sock *rsock, |
1119 | struct consumer_output *consumer, | |
1120 | enum lttng_stream_type type, | |
1121 | uint64_t session_id, | |
1122 | const char *session_name, | |
1123 | const char *hostname, | |
1124 | const char *base_path, | |
1125 | int session_live_timer, | |
1126 | const uint64_t *current_chunk_id, | |
1127 | time_t session_creation_time, | |
1128 | bool session_name_contains_creation_time) | |
37278a1e DG |
1129 | { |
1130 | int ret; | |
7966af57 | 1131 | int fd; |
37278a1e DG |
1132 | struct lttcomm_consumer_msg msg; |
1133 | ||
1134 | /* Code flow error. Safety net. */ | |
a0377dfe FD |
1135 | LTTNG_ASSERT(rsock); |
1136 | LTTNG_ASSERT(consumer); | |
1137 | LTTNG_ASSERT(consumer_sock); | |
37278a1e | 1138 | |
53efb85a | 1139 | memset(&msg, 0, sizeof(msg)); |
37278a1e DG |
1140 | /* Bail out if consumer is disabled */ |
1141 | if (!consumer->enabled) { | |
f73fabfd | 1142 | ret = LTTNG_OK; |
37278a1e DG |
1143 | goto error; |
1144 | } | |
1145 | ||
d3e2ba59 | 1146 | if (type == LTTNG_STREAM_CONTROL) { |
ecd1a12f | 1147 | char output_path[LTTNG_PATH_MAX] = {}; |
07aa2e42 | 1148 | uint64_t relayd_session_id; |
ecd1a12f | 1149 | |
28ab034a JG |
1150 | ret = relayd_create_session(rsock, |
1151 | &relayd_session_id, | |
1152 | session_name, | |
1153 | hostname, | |
1154 | base_path, | |
1155 | session_live_timer, | |
1156 | consumer->snapshot, | |
1157 | session_id, | |
1158 | the_sessiond_uuid, | |
1159 | current_chunk_id, | |
1160 | session_creation_time, | |
1161 | session_name_contains_creation_time, | |
1162 | output_path); | |
d3e2ba59 JD |
1163 | if (ret < 0) { |
1164 | /* Close the control socket. */ | |
1165 | (void) relayd_close(rsock); | |
1166 | goto error; | |
1167 | } | |
07aa2e42 | 1168 | msg.u.relayd_sock.relayd_session_id = relayd_session_id; |
28ab034a | 1169 | DBG("Created session on relay, output path reply: %s", output_path); |
d3e2ba59 JD |
1170 | } |
1171 | ||
37278a1e DG |
1172 | msg.cmd_type = LTTNG_CONSUMER_ADD_RELAYD_SOCKET; |
1173 | /* | |
1174 | * Assign network consumer output index using the temporary consumer since | |
1175 | * this call should only be made from within a set_consumer_uri() function | |
1176 | * call in the session daemon. | |
1177 | */ | |
1178 | msg.u.relayd_sock.net_index = consumer->net_seq_index; | |
1179 | msg.u.relayd_sock.type = type; | |
46e6455f | 1180 | msg.u.relayd_sock.session_id = session_id; |
4222116f JR |
1181 | msg.u.relayd_sock.major = rsock->major; |
1182 | msg.u.relayd_sock.minor = rsock->minor; | |
1183 | msg.u.relayd_sock.relayd_socket_protocol = rsock->sock.proto; | |
37278a1e | 1184 | |
9363801e | 1185 | DBG3("Sending relayd sock info to consumer on %d", *consumer_sock->fd_ptr); |
52898cb1 | 1186 | ret = consumer_send_msg(consumer_sock, &msg); |
f50f23d9 DG |
1187 | if (ret < 0) { |
1188 | goto error; | |
1189 | } | |
1190 | ||
37278a1e | 1191 | DBG3("Sending relayd socket file descriptor to consumer"); |
7966af57 SM |
1192 | fd = rsock->sock.fd; |
1193 | ret = consumer_send_fds(consumer_sock, &fd, 1); | |
37278a1e DG |
1194 | if (ret < 0) { |
1195 | goto error; | |
1196 | } | |
1197 | ||
1198 | DBG2("Consumer relayd socket sent"); | |
1199 | ||
1200 | error: | |
1201 | return ret; | |
1202 | } | |
173af62f | 1203 | |
28ab034a JG |
1204 | static int |
1205 | consumer_send_pipe(struct consumer_socket *consumer_sock, enum lttng_consumer_command cmd, int pipe) | |
e9404c27 JG |
1206 | { |
1207 | int ret; | |
1208 | struct lttcomm_consumer_msg msg; | |
62c43103 JD |
1209 | const char *pipe_name; |
1210 | const char *command_name; | |
1211 | ||
1212 | switch (cmd) { | |
1213 | case LTTNG_CONSUMER_SET_CHANNEL_MONITOR_PIPE: | |
1214 | pipe_name = "channel monitor"; | |
1215 | command_name = "SET_CHANNEL_MONITOR_PIPE"; | |
1216 | break; | |
62c43103 | 1217 | default: |
28ab034a | 1218 | ERR("Unexpected command received in %s (cmd = %d)", __func__, (int) cmd); |
62c43103 JD |
1219 | abort(); |
1220 | } | |
e9404c27 JG |
1221 | |
1222 | /* Code flow error. Safety net. */ | |
1223 | ||
1224 | memset(&msg, 0, sizeof(msg)); | |
62c43103 | 1225 | msg.cmd_type = cmd; |
e9404c27 | 1226 | |
3e4dc117 | 1227 | pthread_mutex_lock(consumer_sock->lock); |
62c43103 | 1228 | DBG3("Sending %s command to consumer", command_name); |
e9404c27 JG |
1229 | ret = consumer_send_msg(consumer_sock, &msg); |
1230 | if (ret < 0) { | |
1231 | goto error; | |
1232 | } | |
1233 | ||
28ab034a | 1234 | DBG3("Sending %s pipe %d to consumer on socket %d", pipe_name, pipe, *consumer_sock->fd_ptr); |
e9404c27 JG |
1235 | ret = consumer_send_fds(consumer_sock, &pipe, 1); |
1236 | if (ret < 0) { | |
1237 | goto error; | |
1238 | } | |
1239 | ||
62c43103 | 1240 | DBG2("%s pipe successfully sent", pipe_name); |
e9404c27 | 1241 | error: |
3e4dc117 | 1242 | pthread_mutex_unlock(consumer_sock->lock); |
e9404c27 JG |
1243 | return ret; |
1244 | } | |
1245 | ||
28ab034a | 1246 | int consumer_send_channel_monitor_pipe(struct consumer_socket *consumer_sock, int pipe) |
62c43103 | 1247 | { |
28ab034a | 1248 | return consumer_send_pipe(consumer_sock, LTTNG_CONSUMER_SET_CHANNEL_MONITOR_PIPE, pipe); |
62c43103 JD |
1249 | } |
1250 | ||
806e2684 | 1251 | /* |
5e280d77 MD |
1252 | * Ask the consumer if the data is pending for the specific session id. |
1253 | * Returns 1 if data is pending, 0 otherwise, or < 0 on error. | |
806e2684 | 1254 | */ |
28ab034a | 1255 | int consumer_is_data_pending(uint64_t session_id, struct consumer_output *consumer) |
806e2684 DG |
1256 | { |
1257 | int ret; | |
28ab034a | 1258 | int32_t ret_code = 0; /* Default is that the data is NOT pending */ |
806e2684 DG |
1259 | struct consumer_socket *socket; |
1260 | struct lttng_ht_iter iter; | |
1261 | struct lttcomm_consumer_msg msg; | |
1262 | ||
a0377dfe | 1263 | LTTNG_ASSERT(consumer); |
806e2684 | 1264 | |
53efb85a | 1265 | DBG3("Consumer data pending for id %" PRIu64, session_id); |
806e2684 | 1266 | |
53efb85a MD |
1267 | memset(&msg, 0, sizeof(msg)); |
1268 | msg.cmd_type = LTTNG_CONSUMER_DATA_PENDING; | |
d88aee68 | 1269 | msg.u.data_pending.session_id = session_id; |
806e2684 | 1270 | |
c8f59ee5 | 1271 | /* Send command for each consumer */ |
b82c5c4d | 1272 | rcu_read_lock(); |
28ab034a | 1273 | cds_lfht_for_each_entry (consumer->socks->ht, &iter.iter, socket, node.node) { |
806e2684 | 1274 | pthread_mutex_lock(socket->lock); |
52898cb1 | 1275 | ret = consumer_socket_send(socket, &msg, sizeof(msg)); |
806e2684 | 1276 | if (ret < 0) { |
806e2684 | 1277 | pthread_mutex_unlock(socket->lock); |
b82c5c4d | 1278 | goto error_unlock; |
806e2684 DG |
1279 | } |
1280 | ||
f50f23d9 DG |
1281 | /* |
1282 | * No need for a recv reply status because the answer to the command is | |
1283 | * the reply status message. | |
1284 | */ | |
1285 | ||
52898cb1 DG |
1286 | ret = consumer_socket_recv(socket, &ret_code, sizeof(ret_code)); |
1287 | if (ret < 0) { | |
806e2684 | 1288 | pthread_mutex_unlock(socket->lock); |
b82c5c4d | 1289 | goto error_unlock; |
806e2684 | 1290 | } |
806e2684 DG |
1291 | pthread_mutex_unlock(socket->lock); |
1292 | ||
6d805429 | 1293 | if (ret_code == 1) { |
806e2684 DG |
1294 | break; |
1295 | } | |
1296 | } | |
b82c5c4d | 1297 | rcu_read_unlock(); |
806e2684 | 1298 | |
d88aee68 | 1299 | DBG("Consumer data is %s pending for session id %" PRIu64, |
28ab034a JG |
1300 | ret_code == 1 ? "" : "NOT", |
1301 | session_id); | |
806e2684 DG |
1302 | return ret_code; |
1303 | ||
b82c5c4d DG |
1304 | error_unlock: |
1305 | rcu_read_unlock(); | |
806e2684 DG |
1306 | return -1; |
1307 | } | |
7972aab2 DG |
1308 | |
1309 | /* | |
1310 | * Send a flush command to consumer using the given channel key. | |
1311 | * | |
1312 | * Return 0 on success else a negative value. | |
1313 | */ | |
1314 | int consumer_flush_channel(struct consumer_socket *socket, uint64_t key) | |
1315 | { | |
1316 | int ret; | |
1317 | struct lttcomm_consumer_msg msg; | |
1318 | ||
a0377dfe | 1319 | LTTNG_ASSERT(socket); |
7972aab2 DG |
1320 | |
1321 | DBG2("Consumer flush channel key %" PRIu64, key); | |
1322 | ||
53efb85a | 1323 | memset(&msg, 0, sizeof(msg)); |
7972aab2 DG |
1324 | msg.cmd_type = LTTNG_CONSUMER_FLUSH_CHANNEL; |
1325 | msg.u.flush_channel.key = key; | |
1326 | ||
1327 | pthread_mutex_lock(socket->lock); | |
1328 | health_code_update(); | |
1329 | ||
1330 | ret = consumer_send_msg(socket, &msg); | |
1331 | if (ret < 0) { | |
1332 | goto end; | |
1333 | } | |
1334 | ||
1335 | end: | |
1336 | health_code_update(); | |
1337 | pthread_mutex_unlock(socket->lock); | |
1338 | return ret; | |
1339 | } | |
1340 | ||
0dd01979 MD |
1341 | /* |
1342 | * Send a clear quiescent command to consumer using the given channel key. | |
1343 | * | |
1344 | * Return 0 on success else a negative value. | |
1345 | */ | |
1346 | int consumer_clear_quiescent_channel(struct consumer_socket *socket, uint64_t key) | |
1347 | { | |
1348 | int ret; | |
1349 | struct lttcomm_consumer_msg msg; | |
1350 | ||
a0377dfe | 1351 | LTTNG_ASSERT(socket); |
0dd01979 MD |
1352 | |
1353 | DBG2("Consumer clear quiescent channel key %" PRIu64, key); | |
1354 | ||
1355 | memset(&msg, 0, sizeof(msg)); | |
1356 | msg.cmd_type = LTTNG_CONSUMER_CLEAR_QUIESCENT_CHANNEL; | |
1357 | msg.u.clear_quiescent_channel.key = key; | |
1358 | ||
1359 | pthread_mutex_lock(socket->lock); | |
1360 | health_code_update(); | |
1361 | ||
1362 | ret = consumer_send_msg(socket, &msg); | |
1363 | if (ret < 0) { | |
1364 | goto end; | |
1365 | } | |
1366 | ||
1367 | end: | |
1368 | health_code_update(); | |
1369 | pthread_mutex_unlock(socket->lock); | |
1370 | return ret; | |
1371 | } | |
1372 | ||
7972aab2 | 1373 | /* |
dc2bbdae MD |
1374 | * Send a close metadata command to consumer using the given channel key. |
1375 | * Called with registry lock held. | |
7972aab2 DG |
1376 | * |
1377 | * Return 0 on success else a negative value. | |
1378 | */ | |
28ab034a | 1379 | int consumer_close_metadata(struct consumer_socket *socket, uint64_t metadata_key) |
7972aab2 DG |
1380 | { |
1381 | int ret; | |
1382 | struct lttcomm_consumer_msg msg; | |
1383 | ||
a0377dfe | 1384 | LTTNG_ASSERT(socket); |
7972aab2 DG |
1385 | |
1386 | DBG2("Consumer close metadata channel key %" PRIu64, metadata_key); | |
1387 | ||
53efb85a | 1388 | memset(&msg, 0, sizeof(msg)); |
7972aab2 DG |
1389 | msg.cmd_type = LTTNG_CONSUMER_CLOSE_METADATA; |
1390 | msg.u.close_metadata.key = metadata_key; | |
1391 | ||
1392 | pthread_mutex_lock(socket->lock); | |
1393 | health_code_update(); | |
1394 | ||
1395 | ret = consumer_send_msg(socket, &msg); | |
1396 | if (ret < 0) { | |
1397 | goto end; | |
1398 | } | |
1399 | ||
1400 | end: | |
1401 | health_code_update(); | |
1402 | pthread_mutex_unlock(socket->lock); | |
1403 | return ret; | |
1404 | } | |
1405 | ||
1406 | /* | |
1407 | * Send a setup metdata command to consumer using the given channel key. | |
1408 | * | |
1409 | * Return 0 on success else a negative value. | |
1410 | */ | |
28ab034a | 1411 | int consumer_setup_metadata(struct consumer_socket *socket, uint64_t metadata_key) |
7972aab2 DG |
1412 | { |
1413 | int ret; | |
1414 | struct lttcomm_consumer_msg msg; | |
1415 | ||
a0377dfe | 1416 | LTTNG_ASSERT(socket); |
7972aab2 DG |
1417 | |
1418 | DBG2("Consumer setup metadata channel key %" PRIu64, metadata_key); | |
1419 | ||
53efb85a | 1420 | memset(&msg, 0, sizeof(msg)); |
7972aab2 DG |
1421 | msg.cmd_type = LTTNG_CONSUMER_SETUP_METADATA; |
1422 | msg.u.setup_metadata.key = metadata_key; | |
1423 | ||
1424 | pthread_mutex_lock(socket->lock); | |
1425 | health_code_update(); | |
1426 | ||
1427 | ret = consumer_send_msg(socket, &msg); | |
1428 | if (ret < 0) { | |
1429 | goto end; | |
1430 | } | |
1431 | ||
1432 | end: | |
1433 | health_code_update(); | |
1434 | pthread_mutex_unlock(socket->lock); | |
1435 | return ret; | |
1436 | } | |
1437 | ||
1438 | /* | |
dc2bbdae MD |
1439 | * Send metadata string to consumer. |
1440 | * RCU read-side lock must be held to guarantee existence of socket. | |
7972aab2 DG |
1441 | * |
1442 | * Return 0 on success else a negative value. | |
1443 | */ | |
1444 | int consumer_push_metadata(struct consumer_socket *socket, | |
28ab034a JG |
1445 | uint64_t metadata_key, |
1446 | char *metadata_str, | |
1447 | size_t len, | |
1448 | size_t target_offset, | |
1449 | uint64_t version) | |
7972aab2 DG |
1450 | { |
1451 | int ret; | |
1452 | struct lttcomm_consumer_msg msg; | |
1453 | ||
a0377dfe | 1454 | LTTNG_ASSERT(socket); |
48b7cdc2 | 1455 | ASSERT_RCU_READ_LOCKED(); |
7972aab2 | 1456 | |
9363801e | 1457 | DBG2("Consumer push metadata to consumer socket %d", *socket->fd_ptr); |
7972aab2 | 1458 | |
dc2bbdae MD |
1459 | pthread_mutex_lock(socket->lock); |
1460 | ||
53efb85a | 1461 | memset(&msg, 0, sizeof(msg)); |
7972aab2 DG |
1462 | msg.cmd_type = LTTNG_CONSUMER_PUSH_METADATA; |
1463 | msg.u.push_metadata.key = metadata_key; | |
1464 | msg.u.push_metadata.target_offset = target_offset; | |
1465 | msg.u.push_metadata.len = len; | |
93ec662e | 1466 | msg.u.push_metadata.version = version; |
7972aab2 | 1467 | |
7972aab2 DG |
1468 | health_code_update(); |
1469 | ret = consumer_send_msg(socket, &msg); | |
331744e3 | 1470 | if (ret < 0 || len == 0) { |
7972aab2 DG |
1471 | goto end; |
1472 | } | |
1473 | ||
28ab034a | 1474 | DBG3("Consumer pushing metadata on sock %d of len %zu", *socket->fd_ptr, len); |
7972aab2 | 1475 | |
52898cb1 | 1476 | ret = consumer_socket_send(socket, metadata_str, len); |
7972aab2 DG |
1477 | if (ret < 0) { |
1478 | goto end; | |
1479 | } | |
1480 | ||
1481 | health_code_update(); | |
1482 | ret = consumer_recv_status_reply(socket); | |
1483 | if (ret < 0) { | |
1484 | goto end; | |
1485 | } | |
1486 | ||
1487 | end: | |
dc2bbdae | 1488 | pthread_mutex_unlock(socket->lock); |
7972aab2 | 1489 | health_code_update(); |
7972aab2 DG |
1490 | return ret; |
1491 | } | |
6dc3064a DG |
1492 | |
1493 | /* | |
1494 | * Ask the consumer to snapshot a specific channel using the key. | |
1495 | * | |
9a654598 | 1496 | * Returns LTTNG_OK on success or else an LTTng error code. |
6dc3064a | 1497 | */ |
9a654598 | 1498 | enum lttng_error_code consumer_snapshot_channel(struct consumer_socket *socket, |
28ab034a JG |
1499 | uint64_t key, |
1500 | const struct consumer_output *output, | |
1501 | int metadata, | |
1502 | const char *channel_path, | |
1503 | uint64_t nb_packets_per_stream) | |
6dc3064a DG |
1504 | { |
1505 | int ret; | |
9a654598 | 1506 | enum lttng_error_code status = LTTNG_OK; |
6dc3064a DG |
1507 | struct lttcomm_consumer_msg msg; |
1508 | ||
a0377dfe FD |
1509 | LTTNG_ASSERT(socket); |
1510 | LTTNG_ASSERT(output); | |
6dc3064a DG |
1511 | |
1512 | DBG("Consumer snapshot channel key %" PRIu64, key); | |
1513 | ||
ee91bab2 | 1514 | memset(&msg, 0, sizeof(msg)); |
6dc3064a DG |
1515 | msg.cmd_type = LTTNG_CONSUMER_SNAPSHOT_CHANNEL; |
1516 | msg.u.snapshot_channel.key = key; | |
d07ceecd | 1517 | msg.u.snapshot_channel.nb_packets_per_stream = nb_packets_per_stream; |
6dc3064a DG |
1518 | msg.u.snapshot_channel.metadata = metadata; |
1519 | ||
348a81dc | 1520 | if (output->type == CONSUMER_DST_NET) { |
28ab034a | 1521 | msg.u.snapshot_channel.relayd_id = output->net_seq_index; |
6dc3064a | 1522 | msg.u.snapshot_channel.use_relayd = 1; |
6dc3064a | 1523 | } else { |
07b86b52 | 1524 | msg.u.snapshot_channel.relayd_id = (uint64_t) -1ULL; |
d2956687 JG |
1525 | } |
1526 | ret = lttng_strncpy(msg.u.snapshot_channel.pathname, | |
28ab034a JG |
1527 | channel_path, |
1528 | sizeof(msg.u.snapshot_channel.pathname)); | |
d2956687 JG |
1529 | if (ret < 0) { |
1530 | ERR("Snapshot path exceeds the maximal allowed length of %zu bytes (%zu bytes required) with path \"%s\"", | |
28ab034a JG |
1531 | sizeof(msg.u.snapshot_channel.pathname), |
1532 | strlen(channel_path), | |
1533 | channel_path); | |
d2956687 JG |
1534 | status = LTTNG_ERR_SNAPSHOT_FAIL; |
1535 | goto error; | |
6dc3064a DG |
1536 | } |
1537 | ||
1538 | health_code_update(); | |
9d1103e6 | 1539 | pthread_mutex_lock(socket->lock); |
6dc3064a | 1540 | ret = consumer_send_msg(socket, &msg); |
9d1103e6 | 1541 | pthread_mutex_unlock(socket->lock); |
6dc3064a | 1542 | if (ret < 0) { |
9bbfb88c MD |
1543 | switch (-ret) { |
1544 | case LTTCOMM_CONSUMERD_CHAN_NOT_FOUND: | |
9a654598 | 1545 | status = LTTNG_ERR_CHAN_NOT_FOUND; |
9bbfb88c MD |
1546 | break; |
1547 | default: | |
9a654598 | 1548 | status = LTTNG_ERR_SNAPSHOT_FAIL; |
9bbfb88c MD |
1549 | break; |
1550 | } | |
6dc3064a DG |
1551 | goto error; |
1552 | } | |
1553 | ||
1554 | error: | |
1555 | health_code_update(); | |
9a654598 | 1556 | return status; |
6dc3064a | 1557 | } |
fb83fe64 JD |
1558 | |
1559 | /* | |
1560 | * Ask the consumer the number of discarded events for a channel. | |
1561 | */ | |
28ab034a JG |
1562 | int consumer_get_discarded_events(uint64_t session_id, |
1563 | uint64_t channel_key, | |
1564 | struct consumer_output *consumer, | |
1565 | uint64_t *discarded) | |
fb83fe64 JD |
1566 | { |
1567 | int ret; | |
1568 | struct consumer_socket *socket; | |
1569 | struct lttng_ht_iter iter; | |
1570 | struct lttcomm_consumer_msg msg; | |
1571 | ||
a0377dfe | 1572 | LTTNG_ASSERT(consumer); |
fb83fe64 JD |
1573 | |
1574 | DBG3("Consumer discarded events id %" PRIu64, session_id); | |
1575 | ||
1576 | memset(&msg, 0, sizeof(msg)); | |
1577 | msg.cmd_type = LTTNG_CONSUMER_DISCARDED_EVENTS; | |
1578 | msg.u.discarded_events.session_id = session_id; | |
1579 | msg.u.discarded_events.channel_key = channel_key; | |
1580 | ||
1581 | *discarded = 0; | |
1582 | ||
1583 | /* Send command for each consumer */ | |
1584 | rcu_read_lock(); | |
28ab034a | 1585 | cds_lfht_for_each_entry (consumer->socks->ht, &iter.iter, socket, node.node) { |
fb83fe64 JD |
1586 | uint64_t consumer_discarded = 0; |
1587 | pthread_mutex_lock(socket->lock); | |
1588 | ret = consumer_socket_send(socket, &msg, sizeof(msg)); | |
1589 | if (ret < 0) { | |
1590 | pthread_mutex_unlock(socket->lock); | |
1591 | goto end; | |
1592 | } | |
1593 | ||
1594 | /* | |
1595 | * No need for a recv reply status because the answer to the | |
1596 | * command is the reply status message. | |
1597 | */ | |
28ab034a | 1598 | ret = consumer_socket_recv(socket, &consumer_discarded, sizeof(consumer_discarded)); |
fb83fe64 JD |
1599 | if (ret < 0) { |
1600 | ERR("get discarded events"); | |
1601 | pthread_mutex_unlock(socket->lock); | |
1602 | goto end; | |
1603 | } | |
1604 | pthread_mutex_unlock(socket->lock); | |
1605 | *discarded += consumer_discarded; | |
1606 | } | |
1607 | ret = 0; | |
28ab034a | 1608 | DBG("Consumer discarded %" PRIu64 " events in session id %" PRIu64, *discarded, session_id); |
fb83fe64 JD |
1609 | |
1610 | end: | |
1611 | rcu_read_unlock(); | |
1612 | return ret; | |
1613 | } | |
1614 | ||
1615 | /* | |
1616 | * Ask the consumer the number of lost packets for a channel. | |
1617 | */ | |
28ab034a JG |
1618 | int consumer_get_lost_packets(uint64_t session_id, |
1619 | uint64_t channel_key, | |
1620 | struct consumer_output *consumer, | |
1621 | uint64_t *lost) | |
fb83fe64 JD |
1622 | { |
1623 | int ret; | |
1624 | struct consumer_socket *socket; | |
1625 | struct lttng_ht_iter iter; | |
1626 | struct lttcomm_consumer_msg msg; | |
1627 | ||
a0377dfe | 1628 | LTTNG_ASSERT(consumer); |
fb83fe64 JD |
1629 | |
1630 | DBG3("Consumer lost packets id %" PRIu64, session_id); | |
1631 | ||
1632 | memset(&msg, 0, sizeof(msg)); | |
1633 | msg.cmd_type = LTTNG_CONSUMER_LOST_PACKETS; | |
1634 | msg.u.lost_packets.session_id = session_id; | |
1635 | msg.u.lost_packets.channel_key = channel_key; | |
1636 | ||
1637 | *lost = 0; | |
1638 | ||
1639 | /* Send command for each consumer */ | |
1640 | rcu_read_lock(); | |
28ab034a | 1641 | cds_lfht_for_each_entry (consumer->socks->ht, &iter.iter, socket, node.node) { |
fb83fe64 JD |
1642 | uint64_t consumer_lost = 0; |
1643 | pthread_mutex_lock(socket->lock); | |
1644 | ret = consumer_socket_send(socket, &msg, sizeof(msg)); | |
1645 | if (ret < 0) { | |
1646 | pthread_mutex_unlock(socket->lock); | |
1647 | goto end; | |
1648 | } | |
1649 | ||
1650 | /* | |
1651 | * No need for a recv reply status because the answer to the | |
1652 | * command is the reply status message. | |
1653 | */ | |
28ab034a | 1654 | ret = consumer_socket_recv(socket, &consumer_lost, sizeof(consumer_lost)); |
fb83fe64 JD |
1655 | if (ret < 0) { |
1656 | ERR("get lost packets"); | |
1657 | pthread_mutex_unlock(socket->lock); | |
1658 | goto end; | |
1659 | } | |
1660 | pthread_mutex_unlock(socket->lock); | |
1661 | *lost += consumer_lost; | |
1662 | } | |
1663 | ret = 0; | |
28ab034a | 1664 | DBG("Consumer lost %" PRIu64 " packets in session id %" PRIu64, *lost, session_id); |
fb83fe64 JD |
1665 | |
1666 | end: | |
1667 | rcu_read_unlock(); | |
1668 | return ret; | |
1669 | } | |
a1ae2ea5 | 1670 | |
5c408ad8 JD |
1671 | /* |
1672 | * Ask the consumer to rotate a channel. | |
5c408ad8 JD |
1673 | * |
1674 | * The new_chunk_id is the session->rotate_count that has been incremented | |
1675 | * when the rotation started. On the relay, this allows to keep track in which | |
1676 | * chunk each stream is currently writing to (for the rotate_pending operation). | |
1677 | */ | |
28ab034a JG |
1678 | int consumer_rotate_channel(struct consumer_socket *socket, |
1679 | uint64_t key, | |
1680 | struct consumer_output *output, | |
1681 | bool is_metadata_channel) | |
5c408ad8 JD |
1682 | { |
1683 | int ret; | |
1684 | struct lttcomm_consumer_msg msg; | |
1685 | ||
a0377dfe | 1686 | LTTNG_ASSERT(socket); |
5c408ad8 JD |
1687 | |
1688 | DBG("Consumer rotate channel key %" PRIu64, key); | |
1689 | ||
1690 | pthread_mutex_lock(socket->lock); | |
1691 | memset(&msg, 0, sizeof(msg)); | |
1692 | msg.cmd_type = LTTNG_CONSUMER_ROTATE_CHANNEL; | |
1693 | msg.u.rotate_channel.key = key; | |
1694 | msg.u.rotate_channel.metadata = !!is_metadata_channel; | |
5c408ad8 JD |
1695 | |
1696 | if (output->type == CONSUMER_DST_NET) { | |
1697 | msg.u.rotate_channel.relayd_id = output->net_seq_index; | |
5c408ad8 JD |
1698 | } else { |
1699 | msg.u.rotate_channel.relayd_id = (uint64_t) -1ULL; | |
5c408ad8 JD |
1700 | } |
1701 | ||
1702 | health_code_update(); | |
1703 | ret = consumer_send_msg(socket, &msg); | |
1704 | if (ret < 0) { | |
20f37cb4 MD |
1705 | switch (-ret) { |
1706 | case LTTCOMM_CONSUMERD_CHAN_NOT_FOUND: | |
1707 | ret = -LTTNG_ERR_CHAN_NOT_FOUND; | |
1708 | break; | |
1709 | default: | |
1710 | ret = -LTTNG_ERR_ROTATION_FAIL_CONSUMER; | |
1711 | break; | |
1712 | } | |
5c408ad8 JD |
1713 | goto error; |
1714 | } | |
5c408ad8 JD |
1715 | error: |
1716 | pthread_mutex_unlock(socket->lock); | |
1717 | health_code_update(); | |
1718 | return ret; | |
1719 | } | |
1720 | ||
04ed9e10 JG |
1721 | int consumer_open_channel_packets(struct consumer_socket *socket, uint64_t key) |
1722 | { | |
1723 | int ret; | |
7966af57 | 1724 | lttcomm_consumer_msg msg = { |
04ed9e10 | 1725 | .cmd_type = LTTNG_CONSUMER_OPEN_CHANNEL_PACKETS, |
1c9a0b0e | 1726 | .u = {}, |
04ed9e10 | 1727 | }; |
7966af57 | 1728 | msg.u.open_channel_packets.key = key; |
04ed9e10 | 1729 | |
a0377dfe | 1730 | LTTNG_ASSERT(socket); |
04ed9e10 JG |
1731 | |
1732 | DBG("Consumer open channel packets: channel key = %" PRIu64, key); | |
1733 | ||
1734 | health_code_update(); | |
1735 | ||
1736 | pthread_mutex_lock(socket->lock); | |
1737 | ret = consumer_send_msg(socket, &msg); | |
1738 | pthread_mutex_unlock(socket->lock); | |
1739 | if (ret < 0) { | |
1740 | goto error_socket; | |
1741 | } | |
1742 | ||
1743 | error_socket: | |
1744 | health_code_update(); | |
1745 | return ret; | |
1746 | } | |
1747 | ||
51a4828f MD |
1748 | int consumer_clear_channel(struct consumer_socket *socket, uint64_t key) |
1749 | { | |
1750 | int ret; | |
1751 | struct lttcomm_consumer_msg msg; | |
1752 | ||
a0377dfe | 1753 | LTTNG_ASSERT(socket); |
51a4828f MD |
1754 | |
1755 | DBG("Consumer clear channel %" PRIu64, key); | |
1756 | ||
1757 | memset(&msg, 0, sizeof(msg)); | |
1758 | msg.cmd_type = LTTNG_CONSUMER_CLEAR_CHANNEL; | |
1759 | msg.u.clear_channel.key = key; | |
1760 | ||
1761 | health_code_update(); | |
1762 | ||
1763 | pthread_mutex_lock(socket->lock); | |
1764 | ret = consumer_send_msg(socket, &msg); | |
1765 | if (ret < 0) { | |
1766 | goto error_socket; | |
1767 | } | |
1768 | ||
1769 | error_socket: | |
1770 | pthread_mutex_unlock(socket->lock); | |
1771 | ||
1772 | health_code_update(); | |
1773 | return ret; | |
1774 | } | |
1775 | ||
28ab034a | 1776 | int consumer_init(struct consumer_socket *socket, const lttng_uuid& sessiond_uuid) |
00fb02ac JD |
1777 | { |
1778 | int ret; | |
d2956687 JG |
1779 | struct lttcomm_consumer_msg msg = { |
1780 | .cmd_type = LTTNG_CONSUMER_INIT, | |
1c9a0b0e | 1781 | .u = {}, |
d2956687 | 1782 | }; |
00fb02ac | 1783 | |
a0377dfe | 1784 | LTTNG_ASSERT(socket); |
00fb02ac | 1785 | |
d2956687 | 1786 | DBG("Sending consumer initialization command"); |
328c2fe7 | 1787 | std::copy(sessiond_uuid.begin(), sessiond_uuid.end(), msg.u.init.sessiond_uuid); |
00fb02ac JD |
1788 | |
1789 | health_code_update(); | |
1790 | ret = consumer_send_msg(socket, &msg); | |
1791 | if (ret < 0) { | |
1792 | goto error; | |
1793 | } | |
1794 | ||
d88744a4 JD |
1795 | error: |
1796 | health_code_update(); | |
1797 | return ret; | |
1798 | } | |
1799 | ||
1800 | /* | |
d2956687 | 1801 | * Ask the consumer to create a new chunk for a given session. |
92816cc3 | 1802 | * |
d2956687 | 1803 | * Called with the consumer socket lock held. |
92816cc3 | 1804 | */ |
d2956687 | 1805 | int consumer_create_trace_chunk(struct consumer_socket *socket, |
28ab034a JG |
1806 | uint64_t relayd_id, |
1807 | uint64_t session_id, | |
1808 | struct lttng_trace_chunk *chunk, | |
1809 | const char *domain_subdir) | |
92816cc3 JG |
1810 | { |
1811 | int ret; | |
d2956687 JG |
1812 | enum lttng_trace_chunk_status chunk_status; |
1813 | struct lttng_credentials chunk_credentials; | |
cd9adb8b JG |
1814 | const struct lttng_directory_handle *chunk_directory_handle = nullptr; |
1815 | struct lttng_directory_handle *domain_handle = nullptr; | |
5da88b0f | 1816 | int domain_dirfd; |
d2956687 | 1817 | const char *chunk_name; |
913a542b | 1818 | bool chunk_name_overridden; |
d2956687 JG |
1819 | uint64_t chunk_id; |
1820 | time_t creation_timestamp; | |
1821 | char creation_timestamp_buffer[ISO8601_STR_LEN]; | |
1822 | const char *creation_timestamp_str = "(none)"; | |
1823 | const bool chunk_has_local_output = relayd_id == -1ULL; | |
69ebf37e | 1824 | enum lttng_trace_chunk_status tc_status; |
d2956687 JG |
1825 | struct lttcomm_consumer_msg msg = { |
1826 | .cmd_type = LTTNG_CONSUMER_CREATE_TRACE_CHUNK, | |
1c9a0b0e | 1827 | .u = {}, |
d2956687 | 1828 | }; |
7966af57 | 1829 | msg.u.create_trace_chunk.session_id = session_id; |
92816cc3 | 1830 | |
a0377dfe FD |
1831 | LTTNG_ASSERT(socket); |
1832 | LTTNG_ASSERT(chunk); | |
92816cc3 | 1833 | |
d2956687 | 1834 | if (relayd_id != -1ULL) { |
28ab034a | 1835 | LTTNG_OPTIONAL_SET(&msg.u.create_trace_chunk.relayd_id, relayd_id); |
d2956687 | 1836 | } |
92816cc3 | 1837 | |
28ab034a | 1838 | chunk_status = lttng_trace_chunk_get_name(chunk, &chunk_name, &chunk_name_overridden); |
d2956687 | 1839 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK && |
28ab034a | 1840 | chunk_status != LTTNG_TRACE_CHUNK_STATUS_NONE) { |
d2956687 JG |
1841 | ERR("Failed to get name of trace chunk"); |
1842 | ret = -LTTNG_ERR_FATAL; | |
92816cc3 JG |
1843 | goto error; |
1844 | } | |
913a542b | 1845 | if (chunk_name_overridden) { |
d2956687 | 1846 | ret = lttng_strncpy(msg.u.create_trace_chunk.override_name, |
28ab034a JG |
1847 | chunk_name, |
1848 | sizeof(msg.u.create_trace_chunk.override_name)); | |
d2956687 JG |
1849 | if (ret) { |
1850 | ERR("Trace chunk name \"%s\" exceeds the maximal length allowed by the consumer protocol", | |
28ab034a | 1851 | chunk_name); |
d2956687 JG |
1852 | ret = -LTTNG_ERR_FATAL; |
1853 | goto error; | |
1854 | } | |
1855 | } | |
92816cc3 | 1856 | |
28ab034a | 1857 | chunk_status = lttng_trace_chunk_get_creation_timestamp(chunk, &creation_timestamp); |
d2956687 JG |
1858 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { |
1859 | ret = -LTTNG_ERR_FATAL; | |
92816cc3 JG |
1860 | goto error; |
1861 | } | |
28ab034a | 1862 | msg.u.create_trace_chunk.creation_timestamp = (uint64_t) creation_timestamp; |
d2956687 | 1863 | /* Only used for logging purposes. */ |
28ab034a JG |
1864 | ret = time_to_iso8601_str( |
1865 | creation_timestamp, creation_timestamp_buffer, sizeof(creation_timestamp_buffer)); | |
1866 | creation_timestamp_str = !ret ? creation_timestamp_buffer : "(formatting error)"; | |
d2956687 JG |
1867 | |
1868 | chunk_status = lttng_trace_chunk_get_id(chunk, &chunk_id); | |
1869 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
1870 | /* | |
1871 | * Anonymous trace chunks should never be transmitted | |
1872 | * to remote peers (consumerd and relayd). They are used | |
1873 | * internally for backward-compatibility purposes. | |
1874 | */ | |
1875 | ret = -LTTNG_ERR_FATAL; | |
1876 | goto error; | |
1877 | } | |
1878 | msg.u.create_trace_chunk.chunk_id = chunk_id; | |
92816cc3 | 1879 | |
d2956687 | 1880 | if (chunk_has_local_output) { |
cbf53d23 | 1881 | chunk_status = lttng_trace_chunk_borrow_chunk_directory_handle( |
28ab034a | 1882 | chunk, &chunk_directory_handle); |
d2956687 JG |
1883 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { |
1884 | ret = -LTTNG_ERR_FATAL; | |
1885 | goto error; | |
1886 | } | |
28ab034a | 1887 | chunk_status = lttng_trace_chunk_get_credentials(chunk, &chunk_credentials); |
e5add6d0 JG |
1888 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { |
1889 | /* | |
1890 | * Not associating credentials to a sessiond chunk is a | |
1891 | * fatal internal error. | |
1892 | */ | |
1893 | ret = -LTTNG_ERR_FATAL; | |
1894 | goto error; | |
1895 | } | |
28ab034a | 1896 | tc_status = lttng_trace_chunk_create_subdirectory(chunk, domain_subdir); |
69ebf37e | 1897 | if (tc_status != LTTNG_TRACE_CHUNK_STATUS_OK) { |
5da88b0f | 1898 | PERROR("Failed to create chunk domain output directory \"%s\"", |
28ab034a | 1899 | domain_subdir); |
5da88b0f MD |
1900 | ret = -LTTNG_ERR_FATAL; |
1901 | goto error; | |
1902 | } | |
28ab034a JG |
1903 | domain_handle = lttng_directory_handle_create_from_handle(domain_subdir, |
1904 | chunk_directory_handle); | |
5da88b0f MD |
1905 | if (!domain_handle) { |
1906 | ret = -LTTNG_ERR_FATAL; | |
1907 | goto error; | |
1908 | } | |
1909 | ||
1910 | /* | |
1911 | * This will only compile on platforms that support | |
1912 | * dirfd (POSIX.2008). This is fine as the session daemon | |
1913 | * is only built for such platforms. | |
1914 | * | |
1915 | * The ownership of the chunk directory handle's is maintained | |
1916 | * by the trace chunk. | |
1917 | */ | |
28ab034a | 1918 | domain_dirfd = lttng_directory_handle_get_dirfd(domain_handle); |
a0377dfe | 1919 | LTTNG_ASSERT(domain_dirfd >= 0); |
5da88b0f | 1920 | |
e5add6d0 | 1921 | msg.u.create_trace_chunk.credentials.value.uid = |
28ab034a | 1922 | lttng_credentials_get_uid(&chunk_credentials); |
e5add6d0 | 1923 | msg.u.create_trace_chunk.credentials.value.gid = |
28ab034a | 1924 | lttng_credentials_get_gid(&chunk_credentials); |
e5add6d0 | 1925 | msg.u.create_trace_chunk.credentials.is_set = 1; |
d2956687 | 1926 | } |
d88744a4 | 1927 | |
d2956687 | 1928 | DBG("Sending consumer create trace chunk command: relayd_id = %" PRId64 |
28ab034a JG |
1929 | ", session_id = %" PRIu64 ", chunk_id = %" PRIu64 ", creation_timestamp = %s", |
1930 | relayd_id, | |
1931 | session_id, | |
1932 | chunk_id, | |
1933 | creation_timestamp_str); | |
d88744a4 JD |
1934 | health_code_update(); |
1935 | ret = consumer_send_msg(socket, &msg); | |
d2956687 | 1936 | health_code_update(); |
d88744a4 | 1937 | if (ret < 0) { |
d2956687 JG |
1938 | ERR("Trace chunk creation error on consumer"); |
1939 | ret = -LTTNG_ERR_CREATE_TRACE_CHUNK_FAIL_CONSUMER; | |
d88744a4 JD |
1940 | goto error; |
1941 | } | |
1942 | ||
d2956687 | 1943 | if (chunk_has_local_output) { |
5da88b0f | 1944 | DBG("Sending trace chunk domain directory fd to consumer"); |
d2956687 | 1945 | health_code_update(); |
5da88b0f | 1946 | ret = consumer_send_fds(socket, &domain_dirfd, 1); |
d2956687 JG |
1947 | health_code_update(); |
1948 | if (ret < 0) { | |
1949 | ERR("Trace chunk creation error on consumer"); | |
1950 | ret = -LTTNG_ERR_CREATE_TRACE_CHUNK_FAIL_CONSUMER; | |
1951 | goto error; | |
1952 | } | |
d88744a4 | 1953 | } |
00fb02ac | 1954 | error: |
5da88b0f | 1955 | lttng_directory_handle_put(domain_handle); |
00fb02ac JD |
1956 | return ret; |
1957 | } | |
1958 | ||
a1ae2ea5 | 1959 | /* |
d2956687 | 1960 | * Ask the consumer to close a trace chunk for a given session. |
a1ae2ea5 JD |
1961 | * |
1962 | * Called with the consumer socket lock held. | |
1963 | */ | |
d2956687 | 1964 | int consumer_close_trace_chunk(struct consumer_socket *socket, |
28ab034a JG |
1965 | uint64_t relayd_id, |
1966 | uint64_t session_id, | |
1967 | struct lttng_trace_chunk *chunk, | |
1968 | char *closed_trace_chunk_path) | |
a1ae2ea5 JD |
1969 | { |
1970 | int ret; | |
d2956687 | 1971 | enum lttng_trace_chunk_status chunk_status; |
7966af57 SM |
1972 | lttcomm_consumer_msg msg = { |
1973 | .cmd_type = LTTNG_CONSUMER_CLOSE_TRACE_CHUNK, | |
1c9a0b0e | 1974 | .u = {}, |
d2956687 | 1975 | }; |
7966af57 SM |
1976 | msg.u.close_trace_chunk.session_id = session_id; |
1977 | ||
ecd1a12f | 1978 | struct lttcomm_consumer_close_trace_chunk_reply reply; |
d2956687 JG |
1979 | uint64_t chunk_id; |
1980 | time_t close_timestamp; | |
bbc4768c JG |
1981 | enum lttng_trace_chunk_command_type close_command; |
1982 | const char *close_command_name = "none"; | |
ecd1a12f | 1983 | struct lttng_dynamic_buffer path_reception_buffer; |
a1ae2ea5 | 1984 | |
a0377dfe | 1985 | LTTNG_ASSERT(socket); |
ecd1a12f | 1986 | lttng_dynamic_buffer_init(&path_reception_buffer); |
a1ae2ea5 | 1987 | |
d2956687 | 1988 | if (relayd_id != -1ULL) { |
28ab034a | 1989 | LTTNG_OPTIONAL_SET(&msg.u.close_trace_chunk.relayd_id, relayd_id); |
bbc4768c JG |
1990 | } |
1991 | ||
28ab034a | 1992 | chunk_status = lttng_trace_chunk_get_close_command(chunk, &close_command); |
bbc4768c JG |
1993 | switch (chunk_status) { |
1994 | case LTTNG_TRACE_CHUNK_STATUS_OK: | |
1995 | LTTNG_OPTIONAL_SET(&msg.u.close_trace_chunk.close_command, | |
28ab034a | 1996 | (uint32_t) close_command); |
bbc4768c JG |
1997 | break; |
1998 | case LTTNG_TRACE_CHUNK_STATUS_NONE: | |
1999 | break; | |
2000 | default: | |
2001 | ERR("Failed to get trace chunk close command"); | |
2002 | ret = -1; | |
2003 | goto error; | |
a1ae2ea5 JD |
2004 | } |
2005 | ||
d2956687 JG |
2006 | chunk_status = lttng_trace_chunk_get_id(chunk, &chunk_id); |
2007 | /* | |
2008 | * Anonymous trace chunks should never be transmitted to remote peers | |
2009 | * (consumerd and relayd). They are used internally for | |
2010 | * backward-compatibility purposes. | |
2011 | */ | |
a0377dfe | 2012 | LTTNG_ASSERT(chunk_status == LTTNG_TRACE_CHUNK_STATUS_OK); |
d2956687 JG |
2013 | msg.u.close_trace_chunk.chunk_id = chunk_id; |
2014 | ||
28ab034a | 2015 | chunk_status = lttng_trace_chunk_get_close_timestamp(chunk, &close_timestamp); |
d2956687 JG |
2016 | /* |
2017 | * A trace chunk should be closed locally before being closed remotely. | |
2018 | * Otherwise, the close timestamp would never be transmitted to the | |
2019 | * peers. | |
2020 | */ | |
a0377dfe | 2021 | LTTNG_ASSERT(chunk_status == LTTNG_TRACE_CHUNK_STATUS_OK); |
d2956687 JG |
2022 | msg.u.close_trace_chunk.close_timestamp = (uint64_t) close_timestamp; |
2023 | ||
bbc4768c | 2024 | if (msg.u.close_trace_chunk.close_command.is_set) { |
28ab034a | 2025 | close_command_name = lttng_trace_chunk_command_type_get_name(close_command); |
bbc4768c | 2026 | } |
d2956687 | 2027 | DBG("Sending consumer close trace chunk command: relayd_id = %" PRId64 |
28ab034a JG |
2028 | ", session_id = %" PRIu64 ", chunk_id = %" PRIu64 ", close command = \"%s\"", |
2029 | relayd_id, | |
2030 | session_id, | |
2031 | chunk_id, | |
2032 | close_command_name); | |
a1ae2ea5 JD |
2033 | |
2034 | health_code_update(); | |
ecd1a12f | 2035 | ret = consumer_socket_send(socket, &msg, sizeof(struct lttcomm_consumer_msg)); |
a1ae2ea5 | 2036 | if (ret < 0) { |
d2956687 | 2037 | ret = -LTTNG_ERR_CLOSE_TRACE_CHUNK_FAIL_CONSUMER; |
a1ae2ea5 JD |
2038 | goto error; |
2039 | } | |
ecd1a12f MD |
2040 | ret = consumer_socket_recv(socket, &reply, sizeof(reply)); |
2041 | if (ret < 0) { | |
2042 | ret = -LTTNG_ERR_CLOSE_TRACE_CHUNK_FAIL_CONSUMER; | |
2043 | goto error; | |
2044 | } | |
2045 | if (reply.path_length >= LTTNG_PATH_MAX) { | |
28ab034a JG |
2046 | ERR("Invalid path returned by relay daemon: %" PRIu32 |
2047 | "bytes exceeds maximal allowed length of %d bytes", | |
2048 | reply.path_length, | |
2049 | LTTNG_PATH_MAX); | |
ecd1a12f MD |
2050 | ret = -LTTNG_ERR_INVALID_PROTOCOL; |
2051 | goto error; | |
2052 | } | |
28ab034a | 2053 | ret = lttng_dynamic_buffer_set_size(&path_reception_buffer, reply.path_length); |
ecd1a12f MD |
2054 | if (ret) { |
2055 | ERR("Failed to allocate reception buffer of path returned by the \"close trace chunk\" command"); | |
2056 | ret = -LTTNG_ERR_NOMEM; | |
2057 | goto error; | |
2058 | } | |
28ab034a | 2059 | ret = consumer_socket_recv(socket, path_reception_buffer.data, path_reception_buffer.size); |
ecd1a12f MD |
2060 | if (ret < 0) { |
2061 | ERR("Communication error while receiving path of closed trace chunk"); | |
2062 | ret = -LTTNG_ERR_CLOSE_TRACE_CHUNK_FAIL_CONSUMER; | |
2063 | goto error; | |
2064 | } | |
2065 | if (path_reception_buffer.data[path_reception_buffer.size - 1] != '\0') { | |
2066 | ERR("Invalid path returned by relay daemon: not null-terminated"); | |
2067 | ret = -LTTNG_ERR_INVALID_PROTOCOL; | |
2068 | goto error; | |
2069 | } | |
2070 | if (closed_trace_chunk_path) { | |
2071 | /* | |
2072 | * closed_trace_chunk_path is assumed to have a length >= | |
2073 | * LTTNG_PATH_MAX | |
2074 | */ | |
28ab034a JG |
2075 | memcpy(closed_trace_chunk_path, |
2076 | path_reception_buffer.data, | |
2077 | path_reception_buffer.size); | |
ecd1a12f | 2078 | } |
a1ae2ea5 | 2079 | error: |
ecd1a12f | 2080 | lttng_dynamic_buffer_reset(&path_reception_buffer); |
a1ae2ea5 JD |
2081 | health_code_update(); |
2082 | return ret; | |
2083 | } | |
3654ed19 | 2084 | |
d2956687 JG |
2085 | /* |
2086 | * Ask the consumer if a trace chunk exists. | |
2087 | * | |
2088 | * Called with the consumer socket lock held. | |
2089 | * Returns 0 on success, or a negative value on error. | |
2090 | */ | |
2091 | int consumer_trace_chunk_exists(struct consumer_socket *socket, | |
28ab034a JG |
2092 | uint64_t relayd_id, |
2093 | uint64_t session_id, | |
2094 | struct lttng_trace_chunk *chunk, | |
2095 | enum consumer_trace_chunk_exists_status *result) | |
3654ed19 JG |
2096 | { |
2097 | int ret; | |
d2956687 | 2098 | enum lttng_trace_chunk_status chunk_status; |
7966af57 | 2099 | lttcomm_consumer_msg msg = { |
d2956687 | 2100 | .cmd_type = LTTNG_CONSUMER_TRACE_CHUNK_EXISTS, |
1c9a0b0e | 2101 | .u = {}, |
3654ed19 | 2102 | }; |
7966af57 SM |
2103 | msg.u.trace_chunk_exists.session_id = session_id; |
2104 | ||
d2956687 JG |
2105 | uint64_t chunk_id; |
2106 | const char *consumer_reply_str; | |
3654ed19 | 2107 | |
a0377dfe | 2108 | LTTNG_ASSERT(socket); |
3654ed19 | 2109 | |
d2956687 | 2110 | if (relayd_id != -1ULL) { |
28ab034a | 2111 | LTTNG_OPTIONAL_SET(&msg.u.trace_chunk_exists.relayd_id, relayd_id); |
d2956687 JG |
2112 | } |
2113 | ||
2114 | chunk_status = lttng_trace_chunk_get_id(chunk, &chunk_id); | |
2115 | if (chunk_status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
2116 | /* | |
2117 | * Anonymous trace chunks should never be transmitted | |
2118 | * to remote peers (consumerd and relayd). They are used | |
2119 | * internally for backward-compatibility purposes. | |
2120 | */ | |
2121 | ret = -LTTNG_ERR_FATAL; | |
2122 | goto error; | |
2123 | } | |
2124 | msg.u.trace_chunk_exists.chunk_id = chunk_id; | |
2125 | ||
2126 | DBG("Sending consumer trace chunk exists command: relayd_id = %" PRId64 | |
28ab034a JG |
2127 | ", session_id = %" PRIu64 ", chunk_id = %" PRIu64, |
2128 | relayd_id, | |
2129 | session_id, | |
2130 | chunk_id); | |
3654ed19 JG |
2131 | |
2132 | health_code_update(); | |
2133 | ret = consumer_send_msg(socket, &msg); | |
d2956687 JG |
2134 | switch (-ret) { |
2135 | case LTTCOMM_CONSUMERD_UNKNOWN_TRACE_CHUNK: | |
2136 | consumer_reply_str = "unknown trace chunk"; | |
2137 | *result = CONSUMER_TRACE_CHUNK_EXISTS_STATUS_UNKNOWN_CHUNK; | |
2138 | break; | |
2139 | case LTTCOMM_CONSUMERD_TRACE_CHUNK_EXISTS_LOCAL: | |
2140 | consumer_reply_str = "trace chunk exists locally"; | |
2141 | *result = CONSUMER_TRACE_CHUNK_EXISTS_STATUS_EXISTS_LOCAL; | |
2142 | break; | |
2143 | case LTTCOMM_CONSUMERD_TRACE_CHUNK_EXISTS_REMOTE: | |
2144 | consumer_reply_str = "trace chunk exists on remote peer"; | |
2145 | *result = CONSUMER_TRACE_CHUNK_EXISTS_STATUS_EXISTS_REMOTE; | |
2146 | break; | |
2147 | default: | |
2148 | ERR("Consumer returned an error from TRACE_CHUNK_EXISTS command"); | |
2149 | ret = -1; | |
3654ed19 JG |
2150 | goto error; |
2151 | } | |
28ab034a | 2152 | DBG("Consumer reply to TRACE_CHUNK_EXISTS command: %s", consumer_reply_str); |
d2956687 | 2153 | ret = 0; |
3654ed19 JG |
2154 | error: |
2155 | health_code_update(); | |
2156 | return ret; | |
2157 | } |