Commit | Line | Data |
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00e2e675 DG |
1 | /* |
2 | * Copyright (C) 2012 - David Goulet <dgoulet@efficios.com> | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms of the GNU General Public License, version 2 only, as | |
6 | * published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
11 | * more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License along with | |
14 | * this program; if not, write to the Free Software Foundation, Inc., 51 | |
15 | * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
16 | */ | |
17 | ||
6c1c0768 | 18 | #define _LGPL_SOURCE |
00e2e675 DG |
19 | #include <assert.h> |
20 | #include <stdio.h> | |
21 | #include <stdlib.h> | |
22 | #include <string.h> | |
23 | #include <sys/stat.h> | |
77c7c900 | 24 | #include <inttypes.h> |
00e2e675 DG |
25 | |
26 | #include <common/common.h> | |
27 | #include <common/defaults.h> | |
f263b7fd | 28 | #include <common/compat/endian.h> |
00e2e675 | 29 | #include <common/sessiond-comm/relayd.h> |
50adc264 | 30 | #include <common/index/ctf-index.h> |
00e2e675 DG |
31 | |
32 | #include "relayd.h" | |
33 | ||
34 | /* | |
35 | * Send command. Fill up the header and append the data. | |
36 | */ | |
6151a90f | 37 | static int send_command(struct lttcomm_relayd_sock *rsock, |
7c9534d6 | 38 | enum lttcomm_relayd_command cmd, void *data, size_t size, |
00e2e675 DG |
39 | int flags) |
40 | { | |
41 | int ret; | |
42 | struct lttcomm_relayd_hdr header; | |
43 | char *buf; | |
44 | uint64_t buf_size = sizeof(header); | |
45 | ||
f96e4545 MD |
46 | if (rsock->sock.fd < 0) { |
47 | return -ECONNRESET; | |
48 | } | |
49 | ||
00e2e675 DG |
50 | if (data) { |
51 | buf_size += size; | |
52 | } | |
53 | ||
54 | buf = zmalloc(buf_size); | |
55 | if (buf == NULL) { | |
56 | PERROR("zmalloc relayd send command buf"); | |
57 | ret = -1; | |
58 | goto alloc_error; | |
59 | } | |
60 | ||
53efb85a | 61 | memset(&header, 0, sizeof(header)); |
00e2e675 DG |
62 | header.cmd = htobe32(cmd); |
63 | header.data_size = htobe64(size); | |
64 | ||
65 | /* Zeroed for now since not used. */ | |
66 | header.cmd_version = 0; | |
67 | header.circuit_id = 0; | |
68 | ||
69 | /* Prepare buffer to send. */ | |
70 | memcpy(buf, &header, sizeof(header)); | |
71 | if (data) { | |
72 | memcpy(buf + sizeof(header), data, size); | |
73 | } | |
74 | ||
68d5b00b | 75 | DBG3("Relayd sending command %d of size %" PRIu64, (int) cmd, buf_size); |
6151a90f | 76 | ret = rsock->sock.ops->sendmsg(&rsock->sock, buf, buf_size, flags); |
00e2e675 | 77 | if (ret < 0) { |
68d5b00b JG |
78 | PERROR("Failed to send command %d of size %" PRIu64, |
79 | (int) cmd, buf_size); | |
8994307f | 80 | ret = -errno; |
00e2e675 DG |
81 | goto error; |
82 | } | |
00e2e675 DG |
83 | error: |
84 | free(buf); | |
85 | alloc_error: | |
86 | return ret; | |
87 | } | |
88 | ||
89 | /* | |
90 | * Receive reply data on socket. This MUST be call after send_command or else | |
91 | * could result in unexpected behavior(s). | |
92 | */ | |
6151a90f | 93 | static int recv_reply(struct lttcomm_relayd_sock *rsock, void *data, size_t size) |
00e2e675 DG |
94 | { |
95 | int ret; | |
96 | ||
f96e4545 MD |
97 | if (rsock->sock.fd < 0) { |
98 | return -ECONNRESET; | |
99 | } | |
100 | ||
8fd623e0 | 101 | DBG3("Relayd waiting for reply of size %zu", size); |
00e2e675 | 102 | |
6151a90f | 103 | ret = rsock->sock.ops->recvmsg(&rsock->sock, data, size, 0); |
20275fe8 DG |
104 | if (ret <= 0 || ret != size) { |
105 | if (ret == 0) { | |
106 | /* Orderly shutdown. */ | |
6151a90f | 107 | DBG("Socket %d has performed an orderly shutdown", rsock->sock.fd); |
20275fe8 | 108 | } else { |
8fd623e0 | 109 | DBG("Receiving reply failed on sock %d for size %zu with ret %d", |
6151a90f | 110 | rsock->sock.fd, size, ret); |
20275fe8 DG |
111 | } |
112 | /* Always return -1 here and the caller can use errno. */ | |
113 | ret = -1; | |
00e2e675 DG |
114 | goto error; |
115 | } | |
116 | ||
117 | error: | |
118 | return ret; | |
119 | } | |
120 | ||
d3e2ba59 JD |
121 | /* |
122 | * Starting at 2.4, RELAYD_CREATE_SESSION takes additional parameters to | |
123 | * support the live reading capability. | |
124 | */ | |
125 | static int relayd_create_session_2_4(struct lttcomm_relayd_sock *rsock, | |
126 | uint64_t *session_id, char *session_name, char *hostname, | |
7d2f7452 | 127 | int session_live_timer, unsigned int snapshot) |
d3e2ba59 JD |
128 | { |
129 | int ret; | |
130 | struct lttcomm_relayd_create_session_2_4 msg; | |
131 | ||
3a13ffd5 MD |
132 | if (lttng_strncpy(msg.session_name, session_name, |
133 | sizeof(msg.session_name))) { | |
246777db MD |
134 | ret = -1; |
135 | goto error; | |
136 | } | |
3a13ffd5 | 137 | if (lttng_strncpy(msg.hostname, hostname, sizeof(msg.hostname))) { |
246777db MD |
138 | ret = -1; |
139 | goto error; | |
140 | } | |
d3e2ba59 | 141 | msg.live_timer = htobe32(session_live_timer); |
7d2f7452 | 142 | msg.snapshot = htobe32(snapshot); |
d3e2ba59 JD |
143 | |
144 | /* Send command */ | |
145 | ret = send_command(rsock, RELAYD_CREATE_SESSION, &msg, sizeof(msg), 0); | |
146 | if (ret < 0) { | |
147 | goto error; | |
148 | } | |
149 | ||
150 | error: | |
151 | return ret; | |
152 | } | |
153 | ||
154 | /* | |
155 | * RELAYD_CREATE_SESSION from 2.1 to 2.3. | |
156 | */ | |
157 | static int relayd_create_session_2_1(struct lttcomm_relayd_sock *rsock, | |
158 | uint64_t *session_id) | |
159 | { | |
160 | int ret; | |
161 | ||
162 | /* Send command */ | |
163 | ret = send_command(rsock, RELAYD_CREATE_SESSION, NULL, 0, 0); | |
164 | if (ret < 0) { | |
165 | goto error; | |
166 | } | |
167 | ||
168 | error: | |
169 | return ret; | |
170 | } | |
171 | ||
c5b6f4f0 DG |
172 | /* |
173 | * Send a RELAYD_CREATE_SESSION command to the relayd with the given socket and | |
174 | * set session_id of the relayd if we have a successful reply from the relayd. | |
175 | * | |
20275fe8 DG |
176 | * On success, return 0 else a negative value which is either an errno error or |
177 | * a lttng error code from the relayd. | |
c5b6f4f0 | 178 | */ |
d3e2ba59 | 179 | int relayd_create_session(struct lttcomm_relayd_sock *rsock, uint64_t *session_id, |
7d2f7452 DG |
180 | char *session_name, char *hostname, int session_live_timer, |
181 | unsigned int snapshot) | |
c5b6f4f0 DG |
182 | { |
183 | int ret; | |
184 | struct lttcomm_relayd_status_session reply; | |
185 | ||
6151a90f | 186 | assert(rsock); |
c5b6f4f0 DG |
187 | assert(session_id); |
188 | ||
189 | DBG("Relayd create session"); | |
190 | ||
d3e2ba59 JD |
191 | switch(rsock->minor) { |
192 | case 1: | |
193 | case 2: | |
194 | case 3: | |
195 | ret = relayd_create_session_2_1(rsock, session_id); | |
31d74dc3 | 196 | break; |
d3e2ba59 JD |
197 | case 4: |
198 | default: | |
7d2f7452 DG |
199 | ret = relayd_create_session_2_4(rsock, session_id, session_name, |
200 | hostname, session_live_timer, snapshot); | |
31d74dc3 | 201 | break; |
d3e2ba59 JD |
202 | } |
203 | ||
c5b6f4f0 DG |
204 | if (ret < 0) { |
205 | goto error; | |
206 | } | |
207 | ||
20275fe8 | 208 | /* Receive response */ |
6151a90f | 209 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
c5b6f4f0 DG |
210 | if (ret < 0) { |
211 | goto error; | |
212 | } | |
213 | ||
214 | reply.session_id = be64toh(reply.session_id); | |
215 | reply.ret_code = be32toh(reply.ret_code); | |
216 | ||
217 | /* Return session id or negative ret code. */ | |
218 | if (reply.ret_code != LTTNG_OK) { | |
bb63afd9 DG |
219 | ret = -1; |
220 | ERR("Relayd create session replied error %d", reply.ret_code); | |
c5b6f4f0 DG |
221 | goto error; |
222 | } else { | |
223 | ret = 0; | |
224 | *session_id = reply.session_id; | |
225 | } | |
226 | ||
227 | DBG("Relayd session created with id %" PRIu64, reply.session_id); | |
228 | ||
229 | error: | |
230 | return ret; | |
231 | } | |
232 | ||
00e2e675 DG |
233 | /* |
234 | * Add stream on the relayd and assign stream handle to the stream_id argument. | |
235 | * | |
236 | * On success return 0 else return ret_code negative value. | |
237 | */ | |
6151a90f | 238 | int relayd_add_stream(struct lttcomm_relayd_sock *rsock, const char *channel_name, |
0f907de1 JD |
239 | const char *pathname, uint64_t *stream_id, |
240 | uint64_t tracefile_size, uint64_t tracefile_count) | |
00e2e675 DG |
241 | { |
242 | int ret; | |
243 | struct lttcomm_relayd_add_stream msg; | |
0f907de1 | 244 | struct lttcomm_relayd_add_stream_2_2 msg_2_2; |
00e2e675 DG |
245 | struct lttcomm_relayd_status_stream reply; |
246 | ||
247 | /* Code flow error. Safety net. */ | |
6151a90f | 248 | assert(rsock); |
00e2e675 DG |
249 | assert(channel_name); |
250 | assert(pathname); | |
251 | ||
252 | DBG("Relayd adding stream for channel name %s", channel_name); | |
253 | ||
0f907de1 JD |
254 | /* Compat with relayd 2.1 */ |
255 | if (rsock->minor == 1) { | |
53efb85a | 256 | memset(&msg, 0, sizeof(msg)); |
a7c918ad MD |
257 | if (lttng_strncpy(msg.channel_name, channel_name, |
258 | sizeof(msg.channel_name))) { | |
246777db MD |
259 | ret = -1; |
260 | goto error; | |
261 | } | |
a7c918ad MD |
262 | if (lttng_strncpy(msg.pathname, pathname, |
263 | sizeof(msg.pathname))) { | |
246777db MD |
264 | ret = -1; |
265 | goto error; | |
266 | } | |
00e2e675 | 267 | |
0f907de1 JD |
268 | /* Send command */ |
269 | ret = send_command(rsock, RELAYD_ADD_STREAM, (void *) &msg, sizeof(msg), 0); | |
270 | if (ret < 0) { | |
271 | goto error; | |
272 | } | |
273 | } else { | |
53efb85a | 274 | memset(&msg_2_2, 0, sizeof(msg_2_2)); |
0f907de1 | 275 | /* Compat with relayd 2.2+ */ |
a7c918ad MD |
276 | if (lttng_strncpy(msg_2_2.channel_name, channel_name, |
277 | sizeof(msg_2_2.channel_name))) { | |
246777db MD |
278 | ret = -1; |
279 | goto error; | |
280 | } | |
a7c918ad MD |
281 | if (lttng_strncpy(msg_2_2.pathname, pathname, |
282 | sizeof(msg_2_2.pathname))) { | |
246777db MD |
283 | ret = -1; |
284 | goto error; | |
285 | } | |
0f907de1 JD |
286 | msg_2_2.tracefile_size = htobe64(tracefile_size); |
287 | msg_2_2.tracefile_count = htobe64(tracefile_count); | |
288 | ||
289 | /* Send command */ | |
290 | ret = send_command(rsock, RELAYD_ADD_STREAM, (void *) &msg_2_2, sizeof(msg_2_2), 0); | |
291 | if (ret < 0) { | |
292 | goto error; | |
293 | } | |
00e2e675 DG |
294 | } |
295 | ||
633d0084 | 296 | /* Waiting for reply */ |
6151a90f | 297 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
00e2e675 DG |
298 | if (ret < 0) { |
299 | goto error; | |
300 | } | |
301 | ||
302 | /* Back to host bytes order. */ | |
303 | reply.handle = be64toh(reply.handle); | |
304 | reply.ret_code = be32toh(reply.ret_code); | |
305 | ||
306 | /* Return session id or negative ret code. */ | |
f73fabfd | 307 | if (reply.ret_code != LTTNG_OK) { |
bb63afd9 DG |
308 | ret = -1; |
309 | ERR("Relayd add stream replied error %d", reply.ret_code); | |
00e2e675 DG |
310 | } else { |
311 | /* Success */ | |
312 | ret = 0; | |
313 | *stream_id = reply.handle; | |
314 | } | |
315 | ||
77c7c900 MD |
316 | DBG("Relayd stream added successfully with handle %" PRIu64, |
317 | reply.handle); | |
00e2e675 DG |
318 | |
319 | error: | |
320 | return ret; | |
321 | } | |
322 | ||
0934dd7e JR |
323 | /* |
324 | * Add stream on the relayd. Send part. | |
325 | * | |
326 | * On success return 0 else return ret_code negative value. | |
327 | */ | |
328 | int relayd_add_stream_send(struct lttcomm_relayd_sock *rsock, const char *channel_name, | |
329 | const char *pathname, uint64_t tracefile_size, uint64_t tracefile_count) | |
330 | { | |
331 | int ret; | |
332 | struct lttcomm_relayd_add_stream msg; | |
333 | struct lttcomm_relayd_add_stream_2_2 msg_2_2; | |
334 | ||
335 | /* Code flow error. Safety net. */ | |
336 | assert(rsock); | |
337 | assert(channel_name); | |
338 | assert(pathname); | |
339 | ||
340 | DBG("Relayd adding stream for channel name %s. Part send", channel_name); | |
341 | ||
342 | /* Compat with relayd 2.1 */ | |
343 | if (rsock->minor == 1) { | |
344 | memset(&msg, 0, sizeof(msg)); | |
345 | if (lttng_strncpy(msg.channel_name, channel_name, | |
346 | sizeof(msg.channel_name))) { | |
347 | ret = -1; | |
348 | goto error; | |
349 | } | |
350 | if (lttng_strncpy(msg.pathname, pathname, | |
351 | sizeof(msg.pathname))) { | |
352 | ret = -1; | |
353 | goto error; | |
354 | } | |
355 | ||
356 | /* Send command */ | |
357 | ret = send_command(rsock, RELAYD_ADD_STREAM, (void *) &msg, sizeof(msg), 0); | |
358 | if (ret < 0) { | |
359 | goto error; | |
360 | } | |
361 | } else { | |
362 | memset(&msg_2_2, 0, sizeof(msg_2_2)); | |
363 | /* Compat with relayd 2.2+ */ | |
364 | if (lttng_strncpy(msg_2_2.channel_name, channel_name, | |
365 | sizeof(msg_2_2.channel_name))) { | |
366 | ret = -1; | |
367 | goto error; | |
368 | } | |
369 | if (lttng_strncpy(msg_2_2.pathname, pathname, | |
370 | sizeof(msg_2_2.pathname))) { | |
371 | ret = -1; | |
372 | goto error; | |
373 | } | |
374 | msg_2_2.tracefile_size = htobe64(tracefile_size); | |
375 | msg_2_2.tracefile_count = htobe64(tracefile_count); | |
376 | ||
377 | /* Send command */ | |
378 | ret = send_command(rsock, RELAYD_ADD_STREAM, (void *) &msg_2_2, sizeof(msg_2_2), 0); | |
379 | if (ret < 0) { | |
380 | goto error; | |
381 | } | |
382 | } | |
383 | ||
384 | DBG("Relayd add stream sent for channel name %s.", channel_name); | |
385 | ret = 0; | |
386 | ||
387 | error: | |
388 | return ret; | |
389 | } | |
390 | ||
391 | int relayd_add_stream_rcv(struct lttcomm_relayd_sock *rsock, uint64_t *_stream_id) | |
392 | { | |
393 | int ret; | |
394 | struct lttcomm_relayd_status_stream reply; | |
395 | ||
396 | /* Code flow error. Safety net. */ | |
397 | assert(rsock); | |
398 | ||
399 | /* Waiting for reply */ | |
400 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); | |
401 | if (ret < 0) { | |
402 | goto error; | |
403 | } | |
404 | ||
405 | /* Back to host bytes order. */ | |
406 | reply.handle = be64toh(reply.handle); | |
407 | reply.ret_code = be32toh(reply.ret_code); | |
408 | ||
409 | /* Return session id or negative ret code. */ | |
410 | if (reply.ret_code != LTTNG_OK) { | |
411 | ret = -1; | |
412 | ERR("Relayd add stream replied error %d", reply.ret_code); | |
413 | } else { | |
414 | /* Success */ | |
415 | ret = 0; | |
416 | *_stream_id = reply.handle; | |
417 | } | |
418 | ||
419 | DBG("Relayd stream added successfully with handle %" PRIu64, | |
420 | reply.handle); | |
421 | ||
422 | error: | |
423 | return ret; | |
424 | } | |
425 | ||
a4baae1b JD |
426 | /* |
427 | * Inform the relay that all the streams for the current channel has been sent. | |
428 | * | |
429 | * On success return 0 else return ret_code negative value. | |
430 | */ | |
431 | int relayd_streams_sent(struct lttcomm_relayd_sock *rsock) | |
432 | { | |
433 | int ret; | |
434 | struct lttcomm_relayd_generic_reply reply; | |
435 | ||
436 | /* Code flow error. Safety net. */ | |
437 | assert(rsock); | |
438 | ||
439 | DBG("Relayd sending streams sent."); | |
440 | ||
441 | /* This feature was introduced in 2.4, ignore it for earlier versions. */ | |
442 | if (rsock->minor < 4) { | |
443 | ret = 0; | |
444 | goto end; | |
445 | } | |
446 | ||
447 | /* Send command */ | |
448 | ret = send_command(rsock, RELAYD_STREAMS_SENT, NULL, 0, 0); | |
449 | if (ret < 0) { | |
450 | goto error; | |
451 | } | |
452 | ||
453 | /* Waiting for reply */ | |
454 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); | |
455 | if (ret < 0) { | |
456 | goto error; | |
457 | } | |
458 | ||
459 | /* Back to host bytes order. */ | |
460 | reply.ret_code = be32toh(reply.ret_code); | |
461 | ||
462 | /* Return session id or negative ret code. */ | |
463 | if (reply.ret_code != LTTNG_OK) { | |
464 | ret = -1; | |
465 | ERR("Relayd streams sent replied error %d", reply.ret_code); | |
466 | goto error; | |
467 | } else { | |
468 | /* Success */ | |
469 | ret = 0; | |
470 | } | |
471 | ||
472 | DBG("Relayd streams sent success"); | |
473 | ||
474 | error: | |
475 | end: | |
476 | return ret; | |
477 | } | |
478 | ||
00e2e675 DG |
479 | /* |
480 | * Check version numbers on the relayd. | |
d4519fa3 JD |
481 | * If major versions are compatible, we assign minor_to_use to the |
482 | * minor version of the procotol we are going to use for this session. | |
00e2e675 | 483 | * |
3071c8c7 JD |
484 | * Return 0 if the two daemons are compatible, LTTNG_ERR_RELAYD_VERSION_FAIL |
485 | * otherwise, or a negative value on network errors. | |
00e2e675 | 486 | */ |
6151a90f | 487 | int relayd_version_check(struct lttcomm_relayd_sock *rsock) |
00e2e675 DG |
488 | { |
489 | int ret; | |
092b6259 | 490 | struct lttcomm_relayd_version msg; |
00e2e675 DG |
491 | |
492 | /* Code flow error. Safety net. */ | |
6151a90f | 493 | assert(rsock); |
00e2e675 | 494 | |
6151a90f JD |
495 | DBG("Relayd version check for major.minor %u.%u", rsock->major, |
496 | rsock->minor); | |
00e2e675 | 497 | |
53efb85a | 498 | memset(&msg, 0, sizeof(msg)); |
092b6259 | 499 | /* Prepare network byte order before transmission. */ |
6151a90f JD |
500 | msg.major = htobe32(rsock->major); |
501 | msg.minor = htobe32(rsock->minor); | |
092b6259 | 502 | |
00e2e675 | 503 | /* Send command */ |
6151a90f | 504 | ret = send_command(rsock, RELAYD_VERSION, (void *) &msg, sizeof(msg), 0); |
00e2e675 DG |
505 | if (ret < 0) { |
506 | goto error; | |
507 | } | |
508 | ||
20275fe8 | 509 | /* Receive response */ |
6151a90f | 510 | ret = recv_reply(rsock, (void *) &msg, sizeof(msg)); |
00e2e675 DG |
511 | if (ret < 0) { |
512 | goto error; | |
513 | } | |
514 | ||
515 | /* Set back to host bytes order */ | |
092b6259 DG |
516 | msg.major = be32toh(msg.major); |
517 | msg.minor = be32toh(msg.minor); | |
518 | ||
519 | /* | |
520 | * Only validate the major version. If the other side is higher, | |
521 | * communication is not possible. Only major version equal can talk to each | |
522 | * other. If the minor version differs, the lowest version is used by both | |
523 | * sides. | |
092b6259 | 524 | */ |
6151a90f | 525 | if (msg.major != rsock->major) { |
d4519fa3 | 526 | /* Not compatible */ |
3071c8c7 | 527 | ret = LTTNG_ERR_RELAYD_VERSION_FAIL; |
d4519fa3 | 528 | DBG2("Relayd version is NOT compatible. Relayd version %u != %u (us)", |
6151a90f | 529 | msg.major, rsock->major); |
092b6259 | 530 | goto error; |
00e2e675 DG |
531 | } |
532 | ||
092b6259 | 533 | /* |
6151a90f JD |
534 | * If the relayd's minor version is higher, it will adapt to our version so |
535 | * we can continue to use the latest relayd communication data structure. | |
536 | * If the received minor version is higher, the relayd should adapt to us. | |
092b6259 | 537 | */ |
6151a90f JD |
538 | if (rsock->minor > msg.minor) { |
539 | rsock->minor = msg.minor; | |
d4519fa3 | 540 | } |
092b6259 | 541 | |
d4519fa3 JD |
542 | /* Version number compatible */ |
543 | DBG2("Relayd version is compatible, using protocol version %u.%u", | |
6151a90f | 544 | rsock->major, rsock->minor); |
d4519fa3 | 545 | ret = 0; |
00e2e675 DG |
546 | |
547 | error: | |
548 | return ret; | |
549 | } | |
550 | ||
00e2e675 DG |
551 | /* |
552 | * Add stream on the relayd and assign stream handle to the stream_id argument. | |
553 | * | |
554 | * On success return 0 else return ret_code negative value. | |
555 | */ | |
6151a90f | 556 | int relayd_send_metadata(struct lttcomm_relayd_sock *rsock, size_t len) |
00e2e675 DG |
557 | { |
558 | int ret; | |
559 | ||
560 | /* Code flow error. Safety net. */ | |
6151a90f | 561 | assert(rsock); |
00e2e675 | 562 | |
77c7c900 | 563 | DBG("Relayd sending metadata of size %zu", len); |
00e2e675 DG |
564 | |
565 | /* Send command */ | |
6151a90f | 566 | ret = send_command(rsock, RELAYD_SEND_METADATA, NULL, len, 0); |
00e2e675 DG |
567 | if (ret < 0) { |
568 | goto error; | |
569 | } | |
570 | ||
571 | DBG2("Relayd metadata added successfully"); | |
572 | ||
573 | /* | |
574 | * After that call, the metadata data MUST be sent to the relayd so the | |
575 | * receive size on the other end matches the len of the metadata packet | |
633d0084 | 576 | * header. This is why we don't wait for a reply here. |
00e2e675 DG |
577 | */ |
578 | ||
579 | error: | |
580 | return ret; | |
581 | } | |
582 | ||
583 | /* | |
6151a90f | 584 | * Connect to relay daemon with an allocated lttcomm_relayd_sock. |
00e2e675 | 585 | */ |
6151a90f | 586 | int relayd_connect(struct lttcomm_relayd_sock *rsock) |
00e2e675 DG |
587 | { |
588 | /* Code flow error. Safety net. */ | |
6151a90f | 589 | assert(rsock); |
00e2e675 | 590 | |
f96e4545 MD |
591 | if (!rsock->sock.ops) { |
592 | /* | |
593 | * Attempting a connect on a non-initialized socket. | |
594 | */ | |
595 | return -ECONNRESET; | |
596 | } | |
597 | ||
00e2e675 DG |
598 | DBG3("Relayd connect ..."); |
599 | ||
6151a90f | 600 | return rsock->sock.ops->connect(&rsock->sock); |
00e2e675 DG |
601 | } |
602 | ||
603 | /* | |
6151a90f | 604 | * Close relayd socket with an allocated lttcomm_relayd_sock. |
ffe60014 DG |
605 | * |
606 | * If no socket operations are found, simply return 0 meaning that everything | |
607 | * is fine. Without operations, the socket can not possibly be opened or used. | |
608 | * This is possible if the socket was allocated but not created. However, the | |
609 | * caller could simply use it to store a valid file descriptor for instance | |
610 | * passed over a Unix socket and call this to cleanup but still without a valid | |
611 | * ops pointer. | |
612 | * | |
613 | * Return the close returned value. On error, a negative value is usually | |
614 | * returned back from close(2). | |
00e2e675 | 615 | */ |
6151a90f | 616 | int relayd_close(struct lttcomm_relayd_sock *rsock) |
00e2e675 | 617 | { |
ffe60014 DG |
618 | int ret; |
619 | ||
00e2e675 | 620 | /* Code flow error. Safety net. */ |
6151a90f | 621 | assert(rsock); |
00e2e675 | 622 | |
ffe60014 | 623 | /* An invalid fd is fine, return success. */ |
6151a90f | 624 | if (rsock->sock.fd < 0) { |
ffe60014 DG |
625 | ret = 0; |
626 | goto end; | |
627 | } | |
628 | ||
6151a90f | 629 | DBG3("Relayd closing socket %d", rsock->sock.fd); |
00e2e675 | 630 | |
6151a90f JD |
631 | if (rsock->sock.ops) { |
632 | ret = rsock->sock.ops->close(&rsock->sock); | |
ffe60014 DG |
633 | } else { |
634 | /* Default call if no specific ops found. */ | |
6151a90f | 635 | ret = close(rsock->sock.fd); |
ffe60014 DG |
636 | if (ret < 0) { |
637 | PERROR("relayd_close default close"); | |
638 | } | |
639 | } | |
f96e4545 | 640 | rsock->sock.fd = -1; |
ffe60014 DG |
641 | |
642 | end: | |
643 | return ret; | |
00e2e675 DG |
644 | } |
645 | ||
646 | /* | |
647 | * Send data header structure to the relayd. | |
648 | */ | |
6151a90f | 649 | int relayd_send_data_hdr(struct lttcomm_relayd_sock *rsock, |
00e2e675 DG |
650 | struct lttcomm_relayd_data_hdr *hdr, size_t size) |
651 | { | |
652 | int ret; | |
653 | ||
654 | /* Code flow error. Safety net. */ | |
6151a90f | 655 | assert(rsock); |
00e2e675 DG |
656 | assert(hdr); |
657 | ||
f96e4545 MD |
658 | if (rsock->sock.fd < 0) { |
659 | return -ECONNRESET; | |
660 | } | |
661 | ||
8fd623e0 | 662 | DBG3("Relayd sending data header of size %zu", size); |
00e2e675 DG |
663 | |
664 | /* Again, safety net */ | |
665 | if (size == 0) { | |
666 | size = sizeof(struct lttcomm_relayd_data_hdr); | |
667 | } | |
668 | ||
669 | /* Only send data header. */ | |
6151a90f | 670 | ret = rsock->sock.ops->sendmsg(&rsock->sock, hdr, size, 0); |
00e2e675 | 671 | if (ret < 0) { |
8994307f | 672 | ret = -errno; |
00e2e675 DG |
673 | goto error; |
674 | } | |
675 | ||
676 | /* | |
677 | * The data MUST be sent right after that command for the receive on the | |
678 | * other end to match the size in the header. | |
679 | */ | |
680 | ||
681 | error: | |
682 | return ret; | |
683 | } | |
173af62f DG |
684 | |
685 | /* | |
686 | * Send close stream command to the relayd. | |
687 | */ | |
6151a90f | 688 | int relayd_send_close_stream(struct lttcomm_relayd_sock *rsock, uint64_t stream_id, |
173af62f DG |
689 | uint64_t last_net_seq_num) |
690 | { | |
691 | int ret; | |
692 | struct lttcomm_relayd_close_stream msg; | |
693 | struct lttcomm_relayd_generic_reply reply; | |
694 | ||
695 | /* Code flow error. Safety net. */ | |
6151a90f | 696 | assert(rsock); |
173af62f | 697 | |
77c7c900 | 698 | DBG("Relayd closing stream id %" PRIu64, stream_id); |
173af62f | 699 | |
53efb85a | 700 | memset(&msg, 0, sizeof(msg)); |
173af62f DG |
701 | msg.stream_id = htobe64(stream_id); |
702 | msg.last_net_seq_num = htobe64(last_net_seq_num); | |
703 | ||
704 | /* Send command */ | |
6151a90f | 705 | ret = send_command(rsock, RELAYD_CLOSE_STREAM, (void *) &msg, sizeof(msg), 0); |
173af62f DG |
706 | if (ret < 0) { |
707 | goto error; | |
708 | } | |
709 | ||
20275fe8 | 710 | /* Receive response */ |
6151a90f | 711 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
173af62f DG |
712 | if (ret < 0) { |
713 | goto error; | |
714 | } | |
715 | ||
716 | reply.ret_code = be32toh(reply.ret_code); | |
717 | ||
718 | /* Return session id or negative ret code. */ | |
f73fabfd | 719 | if (reply.ret_code != LTTNG_OK) { |
bb63afd9 DG |
720 | ret = -1; |
721 | ERR("Relayd close stream replied error %d", reply.ret_code); | |
173af62f DG |
722 | } else { |
723 | /* Success */ | |
724 | ret = 0; | |
725 | } | |
726 | ||
77c7c900 | 727 | DBG("Relayd close stream id %" PRIu64 " successfully", stream_id); |
173af62f DG |
728 | |
729 | error: | |
730 | return ret; | |
731 | } | |
c8f59ee5 DG |
732 | |
733 | /* | |
734 | * Check for data availability for a given stream id. | |
735 | * | |
6d805429 | 736 | * Return 0 if NOT pending, 1 if so and a negative value on error. |
c8f59ee5 | 737 | */ |
6151a90f | 738 | int relayd_data_pending(struct lttcomm_relayd_sock *rsock, uint64_t stream_id, |
c8f59ee5 DG |
739 | uint64_t last_net_seq_num) |
740 | { | |
741 | int ret; | |
6d805429 | 742 | struct lttcomm_relayd_data_pending msg; |
c8f59ee5 DG |
743 | struct lttcomm_relayd_generic_reply reply; |
744 | ||
745 | /* Code flow error. Safety net. */ | |
6151a90f | 746 | assert(rsock); |
c8f59ee5 | 747 | |
6d805429 | 748 | DBG("Relayd data pending for stream id %" PRIu64, stream_id); |
c8f59ee5 | 749 | |
53efb85a | 750 | memset(&msg, 0, sizeof(msg)); |
c8f59ee5 DG |
751 | msg.stream_id = htobe64(stream_id); |
752 | msg.last_net_seq_num = htobe64(last_net_seq_num); | |
753 | ||
754 | /* Send command */ | |
6151a90f | 755 | ret = send_command(rsock, RELAYD_DATA_PENDING, (void *) &msg, |
c8f59ee5 DG |
756 | sizeof(msg), 0); |
757 | if (ret < 0) { | |
758 | goto error; | |
759 | } | |
760 | ||
20275fe8 | 761 | /* Receive response */ |
6151a90f | 762 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
c8f59ee5 DG |
763 | if (ret < 0) { |
764 | goto error; | |
765 | } | |
766 | ||
767 | reply.ret_code = be32toh(reply.ret_code); | |
768 | ||
769 | /* Return session id or negative ret code. */ | |
770 | if (reply.ret_code >= LTTNG_OK) { | |
bb63afd9 | 771 | ERR("Relayd data pending replied error %d", reply.ret_code); |
c8f59ee5 DG |
772 | } |
773 | ||
774 | /* At this point, the ret code is either 1 or 0 */ | |
775 | ret = reply.ret_code; | |
776 | ||
6d805429 | 777 | DBG("Relayd data is %s pending for stream id %" PRIu64, |
9dd26bb9 | 778 | ret == 1 ? "" : "NOT", stream_id); |
c8f59ee5 DG |
779 | |
780 | error: | |
781 | return ret; | |
782 | } | |
783 | ||
784 | /* | |
785 | * Check on the relayd side for a quiescent state on the control socket. | |
786 | */ | |
6151a90f | 787 | int relayd_quiescent_control(struct lttcomm_relayd_sock *rsock, |
ad7051c0 | 788 | uint64_t metadata_stream_id) |
c8f59ee5 DG |
789 | { |
790 | int ret; | |
ad7051c0 | 791 | struct lttcomm_relayd_quiescent_control msg; |
c8f59ee5 DG |
792 | struct lttcomm_relayd_generic_reply reply; |
793 | ||
794 | /* Code flow error. Safety net. */ | |
6151a90f | 795 | assert(rsock); |
c8f59ee5 DG |
796 | |
797 | DBG("Relayd checking quiescent control state"); | |
798 | ||
53efb85a | 799 | memset(&msg, 0, sizeof(msg)); |
ad7051c0 DG |
800 | msg.stream_id = htobe64(metadata_stream_id); |
801 | ||
c8f59ee5 | 802 | /* Send command */ |
6151a90f | 803 | ret = send_command(rsock, RELAYD_QUIESCENT_CONTROL, &msg, sizeof(msg), 0); |
c8f59ee5 DG |
804 | if (ret < 0) { |
805 | goto error; | |
806 | } | |
807 | ||
20275fe8 | 808 | /* Receive response */ |
6151a90f | 809 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
c8f59ee5 DG |
810 | if (ret < 0) { |
811 | goto error; | |
812 | } | |
813 | ||
814 | reply.ret_code = be32toh(reply.ret_code); | |
815 | ||
816 | /* Return session id or negative ret code. */ | |
817 | if (reply.ret_code != LTTNG_OK) { | |
bb63afd9 DG |
818 | ret = -1; |
819 | ERR("Relayd quiescent control replied error %d", reply.ret_code); | |
c8f59ee5 DG |
820 | goto error; |
821 | } | |
822 | ||
823 | /* Control socket is quiescent */ | |
6d805429 | 824 | return 0; |
c8f59ee5 DG |
825 | |
826 | error: | |
827 | return ret; | |
828 | } | |
f7079f67 DG |
829 | |
830 | /* | |
831 | * Begin a data pending command for a specific session id. | |
832 | */ | |
6151a90f | 833 | int relayd_begin_data_pending(struct lttcomm_relayd_sock *rsock, uint64_t id) |
f7079f67 DG |
834 | { |
835 | int ret; | |
836 | struct lttcomm_relayd_begin_data_pending msg; | |
837 | struct lttcomm_relayd_generic_reply reply; | |
838 | ||
839 | /* Code flow error. Safety net. */ | |
6151a90f | 840 | assert(rsock); |
f7079f67 DG |
841 | |
842 | DBG("Relayd begin data pending"); | |
843 | ||
53efb85a | 844 | memset(&msg, 0, sizeof(msg)); |
f7079f67 DG |
845 | msg.session_id = htobe64(id); |
846 | ||
847 | /* Send command */ | |
6151a90f | 848 | ret = send_command(rsock, RELAYD_BEGIN_DATA_PENDING, &msg, sizeof(msg), 0); |
f7079f67 DG |
849 | if (ret < 0) { |
850 | goto error; | |
851 | } | |
852 | ||
20275fe8 | 853 | /* Receive response */ |
6151a90f | 854 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
f7079f67 DG |
855 | if (ret < 0) { |
856 | goto error; | |
857 | } | |
858 | ||
859 | reply.ret_code = be32toh(reply.ret_code); | |
860 | ||
861 | /* Return session id or negative ret code. */ | |
862 | if (reply.ret_code != LTTNG_OK) { | |
bb63afd9 DG |
863 | ret = -1; |
864 | ERR("Relayd begin data pending replied error %d", reply.ret_code); | |
f7079f67 DG |
865 | goto error; |
866 | } | |
867 | ||
868 | return 0; | |
869 | ||
870 | error: | |
871 | return ret; | |
872 | } | |
873 | ||
874 | /* | |
875 | * End a data pending command for a specific session id. | |
876 | * | |
877 | * Return 0 on success and set is_data_inflight to 0 if no data is being | |
878 | * streamed or 1 if it is the case. | |
879 | */ | |
6151a90f | 880 | int relayd_end_data_pending(struct lttcomm_relayd_sock *rsock, uint64_t id, |
f7079f67 DG |
881 | unsigned int *is_data_inflight) |
882 | { | |
af6c30b5 | 883 | int ret, recv_ret; |
f7079f67 DG |
884 | struct lttcomm_relayd_end_data_pending msg; |
885 | struct lttcomm_relayd_generic_reply reply; | |
886 | ||
887 | /* Code flow error. Safety net. */ | |
6151a90f | 888 | assert(rsock); |
f7079f67 DG |
889 | |
890 | DBG("Relayd end data pending"); | |
891 | ||
53efb85a | 892 | memset(&msg, 0, sizeof(msg)); |
f7079f67 DG |
893 | msg.session_id = htobe64(id); |
894 | ||
895 | /* Send command */ | |
6151a90f | 896 | ret = send_command(rsock, RELAYD_END_DATA_PENDING, &msg, sizeof(msg), 0); |
f7079f67 DG |
897 | if (ret < 0) { |
898 | goto error; | |
899 | } | |
900 | ||
20275fe8 | 901 | /* Receive response */ |
6151a90f | 902 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
f7079f67 DG |
903 | if (ret < 0) { |
904 | goto error; | |
905 | } | |
906 | ||
af6c30b5 DG |
907 | recv_ret = be32toh(reply.ret_code); |
908 | if (recv_ret < 0) { | |
909 | ret = recv_ret; | |
f7079f67 DG |
910 | goto error; |
911 | } | |
912 | ||
af6c30b5 | 913 | *is_data_inflight = recv_ret; |
f7079f67 | 914 | |
af6c30b5 | 915 | DBG("Relayd end data pending is data inflight: %d", recv_ret); |
f7079f67 DG |
916 | |
917 | return 0; | |
918 | ||
919 | error: | |
920 | return ret; | |
921 | } | |
1c20f0e2 JD |
922 | |
923 | /* | |
924 | * Send index to the relayd. | |
925 | */ | |
926 | int relayd_send_index(struct lttcomm_relayd_sock *rsock, | |
50adc264 | 927 | struct ctf_packet_index *index, uint64_t relay_stream_id, |
1c20f0e2 JD |
928 | uint64_t net_seq_num) |
929 | { | |
930 | int ret; | |
931 | struct lttcomm_relayd_index msg; | |
932 | struct lttcomm_relayd_generic_reply reply; | |
933 | ||
934 | /* Code flow error. Safety net. */ | |
935 | assert(rsock); | |
936 | ||
937 | if (rsock->minor < 4) { | |
938 | DBG("Not sending indexes before protocol 2.4"); | |
939 | ret = 0; | |
940 | goto error; | |
941 | } | |
942 | ||
943 | DBG("Relayd sending index for stream ID %" PRIu64, relay_stream_id); | |
944 | ||
53efb85a | 945 | memset(&msg, 0, sizeof(msg)); |
1c20f0e2 JD |
946 | msg.relay_stream_id = htobe64(relay_stream_id); |
947 | msg.net_seq_num = htobe64(net_seq_num); | |
948 | ||
949 | /* The index is already in big endian. */ | |
950 | msg.packet_size = index->packet_size; | |
951 | msg.content_size = index->content_size; | |
952 | msg.timestamp_begin = index->timestamp_begin; | |
953 | msg.timestamp_end = index->timestamp_end; | |
954 | msg.events_discarded = index->events_discarded; | |
955 | msg.stream_id = index->stream_id; | |
956 | ||
234cd636 JD |
957 | if (rsock->minor >= 8) { |
958 | msg.stream_instance_id = index->stream_instance_id; | |
959 | msg.packet_seq_num = index->packet_seq_num; | |
960 | } | |
961 | ||
1c20f0e2 | 962 | /* Send command */ |
e0547b83 MD |
963 | ret = send_command(rsock, RELAYD_SEND_INDEX, &msg, |
964 | lttcomm_relayd_index_len(lttng_to_index_major(rsock->major, | |
965 | rsock->minor), | |
966 | lttng_to_index_minor(rsock->major, rsock->minor)), | |
967 | 0); | |
1c20f0e2 JD |
968 | if (ret < 0) { |
969 | goto error; | |
970 | } | |
971 | ||
972 | /* Receive response */ | |
973 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); | |
974 | if (ret < 0) { | |
975 | goto error; | |
976 | } | |
977 | ||
978 | reply.ret_code = be32toh(reply.ret_code); | |
979 | ||
980 | /* Return session id or negative ret code. */ | |
981 | if (reply.ret_code != LTTNG_OK) { | |
982 | ret = -1; | |
983 | ERR("Relayd send index replied error %d", reply.ret_code); | |
984 | } else { | |
985 | /* Success */ | |
986 | ret = 0; | |
987 | } | |
988 | ||
989 | error: | |
990 | return ret; | |
991 | } | |
93ec662e JD |
992 | |
993 | /* | |
994 | * Ask the relay to reset the metadata trace file (regeneration). | |
995 | */ | |
996 | int relayd_reset_metadata(struct lttcomm_relayd_sock *rsock, | |
997 | uint64_t stream_id, uint64_t version) | |
998 | { | |
999 | int ret; | |
1000 | struct lttcomm_relayd_reset_metadata msg; | |
1001 | struct lttcomm_relayd_generic_reply reply; | |
1002 | ||
1003 | /* Code flow error. Safety net. */ | |
1004 | assert(rsock); | |
1005 | ||
1006 | /* Should have been prevented by the sessiond. */ | |
1007 | if (rsock->minor < 8) { | |
1008 | ERR("Metadata regeneration unsupported before 2.8"); | |
1009 | ret = -1; | |
1010 | goto error; | |
1011 | } | |
1012 | ||
1013 | DBG("Relayd reset metadata stream id %" PRIu64, stream_id); | |
1014 | ||
1015 | memset(&msg, 0, sizeof(msg)); | |
1016 | msg.stream_id = htobe64(stream_id); | |
1017 | msg.version = htobe64(version); | |
1018 | ||
1019 | /* Send command */ | |
1020 | ret = send_command(rsock, RELAYD_RESET_METADATA, (void *) &msg, sizeof(msg), 0); | |
1021 | if (ret < 0) { | |
1022 | goto error; | |
1023 | } | |
1024 | ||
1025 | /* Receive response */ | |
1026 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); | |
1027 | if (ret < 0) { | |
1028 | goto error; | |
1029 | } | |
1030 | ||
1031 | reply.ret_code = be32toh(reply.ret_code); | |
1032 | ||
1033 | /* Return session id or negative ret code. */ | |
1034 | if (reply.ret_code != LTTNG_OK) { | |
1035 | ret = -1; | |
1036 | ERR("Relayd reset metadata replied error %d", reply.ret_code); | |
1037 | } else { | |
1038 | /* Success */ | |
1039 | ret = 0; | |
1040 | } | |
1041 | ||
1042 | DBG("Relayd reset metadata stream id %" PRIu64 " successfully", stream_id); | |
1043 | ||
1044 | error: | |
1045 | return ret; | |
1046 | } |