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 | ||
6151a90f | 75 | ret = rsock->sock.ops->sendmsg(&rsock->sock, buf, buf_size, flags); |
00e2e675 | 76 | if (ret < 0) { |
8994307f | 77 | ret = -errno; |
00e2e675 DG |
78 | goto error; |
79 | } | |
80 | ||
633d0084 | 81 | DBG3("Relayd sending command %d of size %" PRIu64, cmd, buf_size); |
00e2e675 DG |
82 | |
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 | ||
a4baae1b JD |
323 | /* |
324 | * Inform the relay that all the streams for the current channel has been sent. | |
325 | * | |
326 | * On success return 0 else return ret_code negative value. | |
327 | */ | |
328 | int relayd_streams_sent(struct lttcomm_relayd_sock *rsock) | |
329 | { | |
330 | int ret; | |
331 | struct lttcomm_relayd_generic_reply reply; | |
332 | ||
333 | /* Code flow error. Safety net. */ | |
334 | assert(rsock); | |
335 | ||
336 | DBG("Relayd sending streams sent."); | |
337 | ||
338 | /* This feature was introduced in 2.4, ignore it for earlier versions. */ | |
339 | if (rsock->minor < 4) { | |
340 | ret = 0; | |
341 | goto end; | |
342 | } | |
343 | ||
344 | /* Send command */ | |
345 | ret = send_command(rsock, RELAYD_STREAMS_SENT, NULL, 0, 0); | |
346 | if (ret < 0) { | |
347 | goto error; | |
348 | } | |
349 | ||
350 | /* Waiting for reply */ | |
351 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); | |
352 | if (ret < 0) { | |
353 | goto error; | |
354 | } | |
355 | ||
356 | /* Back to host bytes order. */ | |
357 | reply.ret_code = be32toh(reply.ret_code); | |
358 | ||
359 | /* Return session id or negative ret code. */ | |
360 | if (reply.ret_code != LTTNG_OK) { | |
361 | ret = -1; | |
362 | ERR("Relayd streams sent replied error %d", reply.ret_code); | |
363 | goto error; | |
364 | } else { | |
365 | /* Success */ | |
366 | ret = 0; | |
367 | } | |
368 | ||
369 | DBG("Relayd streams sent success"); | |
370 | ||
371 | error: | |
372 | end: | |
373 | return ret; | |
374 | } | |
375 | ||
00e2e675 DG |
376 | /* |
377 | * Check version numbers on the relayd. | |
d4519fa3 JD |
378 | * If major versions are compatible, we assign minor_to_use to the |
379 | * minor version of the procotol we are going to use for this session. | |
00e2e675 DG |
380 | * |
381 | * Return 0 if compatible else negative value. | |
382 | */ | |
6151a90f | 383 | int relayd_version_check(struct lttcomm_relayd_sock *rsock) |
00e2e675 DG |
384 | { |
385 | int ret; | |
092b6259 | 386 | struct lttcomm_relayd_version msg; |
00e2e675 DG |
387 | |
388 | /* Code flow error. Safety net. */ | |
6151a90f | 389 | assert(rsock); |
00e2e675 | 390 | |
6151a90f JD |
391 | DBG("Relayd version check for major.minor %u.%u", rsock->major, |
392 | rsock->minor); | |
00e2e675 | 393 | |
53efb85a | 394 | memset(&msg, 0, sizeof(msg)); |
092b6259 | 395 | /* Prepare network byte order before transmission. */ |
6151a90f JD |
396 | msg.major = htobe32(rsock->major); |
397 | msg.minor = htobe32(rsock->minor); | |
092b6259 | 398 | |
00e2e675 | 399 | /* Send command */ |
6151a90f | 400 | ret = send_command(rsock, RELAYD_VERSION, (void *) &msg, sizeof(msg), 0); |
00e2e675 DG |
401 | if (ret < 0) { |
402 | goto error; | |
403 | } | |
404 | ||
20275fe8 | 405 | /* Receive response */ |
6151a90f | 406 | ret = recv_reply(rsock, (void *) &msg, sizeof(msg)); |
00e2e675 DG |
407 | if (ret < 0) { |
408 | goto error; | |
409 | } | |
410 | ||
411 | /* Set back to host bytes order */ | |
092b6259 DG |
412 | msg.major = be32toh(msg.major); |
413 | msg.minor = be32toh(msg.minor); | |
414 | ||
415 | /* | |
416 | * Only validate the major version. If the other side is higher, | |
417 | * communication is not possible. Only major version equal can talk to each | |
418 | * other. If the minor version differs, the lowest version is used by both | |
419 | * sides. | |
092b6259 | 420 | */ |
6151a90f | 421 | if (msg.major != rsock->major) { |
d4519fa3 JD |
422 | /* Not compatible */ |
423 | ret = -1; | |
424 | DBG2("Relayd version is NOT compatible. Relayd version %u != %u (us)", | |
6151a90f | 425 | msg.major, rsock->major); |
092b6259 | 426 | goto error; |
00e2e675 DG |
427 | } |
428 | ||
092b6259 | 429 | /* |
6151a90f JD |
430 | * If the relayd's minor version is higher, it will adapt to our version so |
431 | * we can continue to use the latest relayd communication data structure. | |
432 | * If the received minor version is higher, the relayd should adapt to us. | |
092b6259 | 433 | */ |
6151a90f JD |
434 | if (rsock->minor > msg.minor) { |
435 | rsock->minor = msg.minor; | |
d4519fa3 | 436 | } |
092b6259 | 437 | |
d4519fa3 JD |
438 | /* Version number compatible */ |
439 | DBG2("Relayd version is compatible, using protocol version %u.%u", | |
6151a90f | 440 | rsock->major, rsock->minor); |
d4519fa3 | 441 | ret = 0; |
00e2e675 DG |
442 | |
443 | error: | |
444 | return ret; | |
445 | } | |
446 | ||
00e2e675 DG |
447 | /* |
448 | * Add stream on the relayd and assign stream handle to the stream_id argument. | |
449 | * | |
450 | * On success return 0 else return ret_code negative value. | |
451 | */ | |
6151a90f | 452 | int relayd_send_metadata(struct lttcomm_relayd_sock *rsock, size_t len) |
00e2e675 DG |
453 | { |
454 | int ret; | |
455 | ||
456 | /* Code flow error. Safety net. */ | |
6151a90f | 457 | assert(rsock); |
00e2e675 | 458 | |
77c7c900 | 459 | DBG("Relayd sending metadata of size %zu", len); |
00e2e675 DG |
460 | |
461 | /* Send command */ | |
6151a90f | 462 | ret = send_command(rsock, RELAYD_SEND_METADATA, NULL, len, 0); |
00e2e675 DG |
463 | if (ret < 0) { |
464 | goto error; | |
465 | } | |
466 | ||
467 | DBG2("Relayd metadata added successfully"); | |
468 | ||
469 | /* | |
470 | * After that call, the metadata data MUST be sent to the relayd so the | |
471 | * receive size on the other end matches the len of the metadata packet | |
633d0084 | 472 | * header. This is why we don't wait for a reply here. |
00e2e675 DG |
473 | */ |
474 | ||
475 | error: | |
476 | return ret; | |
477 | } | |
478 | ||
479 | /* | |
6151a90f | 480 | * Connect to relay daemon with an allocated lttcomm_relayd_sock. |
00e2e675 | 481 | */ |
6151a90f | 482 | int relayd_connect(struct lttcomm_relayd_sock *rsock) |
00e2e675 DG |
483 | { |
484 | /* Code flow error. Safety net. */ | |
6151a90f | 485 | assert(rsock); |
00e2e675 | 486 | |
f96e4545 MD |
487 | if (!rsock->sock.ops) { |
488 | /* | |
489 | * Attempting a connect on a non-initialized socket. | |
490 | */ | |
491 | return -ECONNRESET; | |
492 | } | |
493 | ||
00e2e675 DG |
494 | DBG3("Relayd connect ..."); |
495 | ||
6151a90f | 496 | return rsock->sock.ops->connect(&rsock->sock); |
00e2e675 DG |
497 | } |
498 | ||
499 | /* | |
6151a90f | 500 | * Close relayd socket with an allocated lttcomm_relayd_sock. |
ffe60014 DG |
501 | * |
502 | * If no socket operations are found, simply return 0 meaning that everything | |
503 | * is fine. Without operations, the socket can not possibly be opened or used. | |
504 | * This is possible if the socket was allocated but not created. However, the | |
505 | * caller could simply use it to store a valid file descriptor for instance | |
506 | * passed over a Unix socket and call this to cleanup but still without a valid | |
507 | * ops pointer. | |
508 | * | |
509 | * Return the close returned value. On error, a negative value is usually | |
510 | * returned back from close(2). | |
00e2e675 | 511 | */ |
6151a90f | 512 | int relayd_close(struct lttcomm_relayd_sock *rsock) |
00e2e675 | 513 | { |
ffe60014 DG |
514 | int ret; |
515 | ||
00e2e675 | 516 | /* Code flow error. Safety net. */ |
6151a90f | 517 | assert(rsock); |
00e2e675 | 518 | |
ffe60014 | 519 | /* An invalid fd is fine, return success. */ |
6151a90f | 520 | if (rsock->sock.fd < 0) { |
ffe60014 DG |
521 | ret = 0; |
522 | goto end; | |
523 | } | |
524 | ||
6151a90f | 525 | DBG3("Relayd closing socket %d", rsock->sock.fd); |
00e2e675 | 526 | |
6151a90f JD |
527 | if (rsock->sock.ops) { |
528 | ret = rsock->sock.ops->close(&rsock->sock); | |
ffe60014 DG |
529 | } else { |
530 | /* Default call if no specific ops found. */ | |
6151a90f | 531 | ret = close(rsock->sock.fd); |
ffe60014 DG |
532 | if (ret < 0) { |
533 | PERROR("relayd_close default close"); | |
534 | } | |
535 | } | |
f96e4545 | 536 | rsock->sock.fd = -1; |
ffe60014 DG |
537 | |
538 | end: | |
539 | return ret; | |
00e2e675 DG |
540 | } |
541 | ||
542 | /* | |
543 | * Send data header structure to the relayd. | |
544 | */ | |
6151a90f | 545 | int relayd_send_data_hdr(struct lttcomm_relayd_sock *rsock, |
00e2e675 DG |
546 | struct lttcomm_relayd_data_hdr *hdr, size_t size) |
547 | { | |
548 | int ret; | |
549 | ||
550 | /* Code flow error. Safety net. */ | |
6151a90f | 551 | assert(rsock); |
00e2e675 DG |
552 | assert(hdr); |
553 | ||
f96e4545 MD |
554 | if (rsock->sock.fd < 0) { |
555 | return -ECONNRESET; | |
556 | } | |
557 | ||
8fd623e0 | 558 | DBG3("Relayd sending data header of size %zu", size); |
00e2e675 DG |
559 | |
560 | /* Again, safety net */ | |
561 | if (size == 0) { | |
562 | size = sizeof(struct lttcomm_relayd_data_hdr); | |
563 | } | |
564 | ||
565 | /* Only send data header. */ | |
6151a90f | 566 | ret = rsock->sock.ops->sendmsg(&rsock->sock, hdr, size, 0); |
00e2e675 | 567 | if (ret < 0) { |
8994307f | 568 | ret = -errno; |
00e2e675 DG |
569 | goto error; |
570 | } | |
571 | ||
572 | /* | |
573 | * The data MUST be sent right after that command for the receive on the | |
574 | * other end to match the size in the header. | |
575 | */ | |
576 | ||
577 | error: | |
578 | return ret; | |
579 | } | |
173af62f DG |
580 | |
581 | /* | |
582 | * Send close stream command to the relayd. | |
583 | */ | |
6151a90f | 584 | int relayd_send_close_stream(struct lttcomm_relayd_sock *rsock, uint64_t stream_id, |
173af62f DG |
585 | uint64_t last_net_seq_num) |
586 | { | |
587 | int ret; | |
588 | struct lttcomm_relayd_close_stream msg; | |
589 | struct lttcomm_relayd_generic_reply reply; | |
590 | ||
591 | /* Code flow error. Safety net. */ | |
6151a90f | 592 | assert(rsock); |
173af62f | 593 | |
77c7c900 | 594 | DBG("Relayd closing stream id %" PRIu64, stream_id); |
173af62f | 595 | |
53efb85a | 596 | memset(&msg, 0, sizeof(msg)); |
173af62f DG |
597 | msg.stream_id = htobe64(stream_id); |
598 | msg.last_net_seq_num = htobe64(last_net_seq_num); | |
599 | ||
600 | /* Send command */ | |
6151a90f | 601 | ret = send_command(rsock, RELAYD_CLOSE_STREAM, (void *) &msg, sizeof(msg), 0); |
173af62f DG |
602 | if (ret < 0) { |
603 | goto error; | |
604 | } | |
605 | ||
20275fe8 | 606 | /* Receive response */ |
6151a90f | 607 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
173af62f DG |
608 | if (ret < 0) { |
609 | goto error; | |
610 | } | |
611 | ||
612 | reply.ret_code = be32toh(reply.ret_code); | |
613 | ||
614 | /* Return session id or negative ret code. */ | |
f73fabfd | 615 | if (reply.ret_code != LTTNG_OK) { |
bb63afd9 DG |
616 | ret = -1; |
617 | ERR("Relayd close stream replied error %d", reply.ret_code); | |
173af62f DG |
618 | } else { |
619 | /* Success */ | |
620 | ret = 0; | |
621 | } | |
622 | ||
77c7c900 | 623 | DBG("Relayd close stream id %" PRIu64 " successfully", stream_id); |
173af62f DG |
624 | |
625 | error: | |
626 | return ret; | |
627 | } | |
c8f59ee5 DG |
628 | |
629 | /* | |
630 | * Check for data availability for a given stream id. | |
631 | * | |
6d805429 | 632 | * Return 0 if NOT pending, 1 if so and a negative value on error. |
c8f59ee5 | 633 | */ |
6151a90f | 634 | int relayd_data_pending(struct lttcomm_relayd_sock *rsock, uint64_t stream_id, |
c8f59ee5 DG |
635 | uint64_t last_net_seq_num) |
636 | { | |
637 | int ret; | |
6d805429 | 638 | struct lttcomm_relayd_data_pending msg; |
c8f59ee5 DG |
639 | struct lttcomm_relayd_generic_reply reply; |
640 | ||
641 | /* Code flow error. Safety net. */ | |
6151a90f | 642 | assert(rsock); |
c8f59ee5 | 643 | |
6d805429 | 644 | DBG("Relayd data pending for stream id %" PRIu64, stream_id); |
c8f59ee5 | 645 | |
53efb85a | 646 | memset(&msg, 0, sizeof(msg)); |
c8f59ee5 DG |
647 | msg.stream_id = htobe64(stream_id); |
648 | msg.last_net_seq_num = htobe64(last_net_seq_num); | |
649 | ||
650 | /* Send command */ | |
6151a90f | 651 | ret = send_command(rsock, RELAYD_DATA_PENDING, (void *) &msg, |
c8f59ee5 DG |
652 | sizeof(msg), 0); |
653 | if (ret < 0) { | |
654 | goto error; | |
655 | } | |
656 | ||
20275fe8 | 657 | /* Receive response */ |
6151a90f | 658 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
c8f59ee5 DG |
659 | if (ret < 0) { |
660 | goto error; | |
661 | } | |
662 | ||
663 | reply.ret_code = be32toh(reply.ret_code); | |
664 | ||
665 | /* Return session id or negative ret code. */ | |
666 | if (reply.ret_code >= LTTNG_OK) { | |
bb63afd9 | 667 | ERR("Relayd data pending replied error %d", reply.ret_code); |
c8f59ee5 DG |
668 | } |
669 | ||
670 | /* At this point, the ret code is either 1 or 0 */ | |
671 | ret = reply.ret_code; | |
672 | ||
6d805429 | 673 | DBG("Relayd data is %s pending for stream id %" PRIu64, |
9dd26bb9 | 674 | ret == 1 ? "" : "NOT", stream_id); |
c8f59ee5 DG |
675 | |
676 | error: | |
677 | return ret; | |
678 | } | |
679 | ||
680 | /* | |
681 | * Check on the relayd side for a quiescent state on the control socket. | |
682 | */ | |
6151a90f | 683 | int relayd_quiescent_control(struct lttcomm_relayd_sock *rsock, |
ad7051c0 | 684 | uint64_t metadata_stream_id) |
c8f59ee5 DG |
685 | { |
686 | int ret; | |
ad7051c0 | 687 | struct lttcomm_relayd_quiescent_control msg; |
c8f59ee5 DG |
688 | struct lttcomm_relayd_generic_reply reply; |
689 | ||
690 | /* Code flow error. Safety net. */ | |
6151a90f | 691 | assert(rsock); |
c8f59ee5 DG |
692 | |
693 | DBG("Relayd checking quiescent control state"); | |
694 | ||
53efb85a | 695 | memset(&msg, 0, sizeof(msg)); |
ad7051c0 DG |
696 | msg.stream_id = htobe64(metadata_stream_id); |
697 | ||
c8f59ee5 | 698 | /* Send command */ |
6151a90f | 699 | ret = send_command(rsock, RELAYD_QUIESCENT_CONTROL, &msg, sizeof(msg), 0); |
c8f59ee5 DG |
700 | if (ret < 0) { |
701 | goto error; | |
702 | } | |
703 | ||
20275fe8 | 704 | /* Receive response */ |
6151a90f | 705 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
c8f59ee5 DG |
706 | if (ret < 0) { |
707 | goto error; | |
708 | } | |
709 | ||
710 | reply.ret_code = be32toh(reply.ret_code); | |
711 | ||
712 | /* Return session id or negative ret code. */ | |
713 | if (reply.ret_code != LTTNG_OK) { | |
bb63afd9 DG |
714 | ret = -1; |
715 | ERR("Relayd quiescent control replied error %d", reply.ret_code); | |
c8f59ee5 DG |
716 | goto error; |
717 | } | |
718 | ||
719 | /* Control socket is quiescent */ | |
6d805429 | 720 | return 0; |
c8f59ee5 DG |
721 | |
722 | error: | |
723 | return ret; | |
724 | } | |
f7079f67 DG |
725 | |
726 | /* | |
727 | * Begin a data pending command for a specific session id. | |
728 | */ | |
6151a90f | 729 | int relayd_begin_data_pending(struct lttcomm_relayd_sock *rsock, uint64_t id) |
f7079f67 DG |
730 | { |
731 | int ret; | |
732 | struct lttcomm_relayd_begin_data_pending msg; | |
733 | struct lttcomm_relayd_generic_reply reply; | |
734 | ||
735 | /* Code flow error. Safety net. */ | |
6151a90f | 736 | assert(rsock); |
f7079f67 DG |
737 | |
738 | DBG("Relayd begin data pending"); | |
739 | ||
53efb85a | 740 | memset(&msg, 0, sizeof(msg)); |
f7079f67 DG |
741 | msg.session_id = htobe64(id); |
742 | ||
743 | /* Send command */ | |
6151a90f | 744 | ret = send_command(rsock, RELAYD_BEGIN_DATA_PENDING, &msg, sizeof(msg), 0); |
f7079f67 DG |
745 | if (ret < 0) { |
746 | goto error; | |
747 | } | |
748 | ||
20275fe8 | 749 | /* Receive response */ |
6151a90f | 750 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
f7079f67 DG |
751 | if (ret < 0) { |
752 | goto error; | |
753 | } | |
754 | ||
755 | reply.ret_code = be32toh(reply.ret_code); | |
756 | ||
757 | /* Return session id or negative ret code. */ | |
758 | if (reply.ret_code != LTTNG_OK) { | |
bb63afd9 DG |
759 | ret = -1; |
760 | ERR("Relayd begin data pending replied error %d", reply.ret_code); | |
f7079f67 DG |
761 | goto error; |
762 | } | |
763 | ||
764 | return 0; | |
765 | ||
766 | error: | |
767 | return ret; | |
768 | } | |
769 | ||
770 | /* | |
771 | * End a data pending command for a specific session id. | |
772 | * | |
773 | * Return 0 on success and set is_data_inflight to 0 if no data is being | |
774 | * streamed or 1 if it is the case. | |
775 | */ | |
6151a90f | 776 | int relayd_end_data_pending(struct lttcomm_relayd_sock *rsock, uint64_t id, |
f7079f67 DG |
777 | unsigned int *is_data_inflight) |
778 | { | |
af6c30b5 | 779 | int ret, recv_ret; |
f7079f67 DG |
780 | struct lttcomm_relayd_end_data_pending msg; |
781 | struct lttcomm_relayd_generic_reply reply; | |
782 | ||
783 | /* Code flow error. Safety net. */ | |
6151a90f | 784 | assert(rsock); |
f7079f67 DG |
785 | |
786 | DBG("Relayd end data pending"); | |
787 | ||
53efb85a | 788 | memset(&msg, 0, sizeof(msg)); |
f7079f67 DG |
789 | msg.session_id = htobe64(id); |
790 | ||
791 | /* Send command */ | |
6151a90f | 792 | ret = send_command(rsock, RELAYD_END_DATA_PENDING, &msg, sizeof(msg), 0); |
f7079f67 DG |
793 | if (ret < 0) { |
794 | goto error; | |
795 | } | |
796 | ||
20275fe8 | 797 | /* Receive response */ |
6151a90f | 798 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
f7079f67 DG |
799 | if (ret < 0) { |
800 | goto error; | |
801 | } | |
802 | ||
af6c30b5 DG |
803 | recv_ret = be32toh(reply.ret_code); |
804 | if (recv_ret < 0) { | |
805 | ret = recv_ret; | |
f7079f67 DG |
806 | goto error; |
807 | } | |
808 | ||
af6c30b5 | 809 | *is_data_inflight = recv_ret; |
f7079f67 | 810 | |
af6c30b5 | 811 | DBG("Relayd end data pending is data inflight: %d", recv_ret); |
f7079f67 DG |
812 | |
813 | return 0; | |
814 | ||
815 | error: | |
816 | return ret; | |
817 | } | |
1c20f0e2 JD |
818 | |
819 | /* | |
820 | * Send index to the relayd. | |
821 | */ | |
822 | int relayd_send_index(struct lttcomm_relayd_sock *rsock, | |
50adc264 | 823 | struct ctf_packet_index *index, uint64_t relay_stream_id, |
1c20f0e2 JD |
824 | uint64_t net_seq_num) |
825 | { | |
826 | int ret; | |
827 | struct lttcomm_relayd_index msg; | |
828 | struct lttcomm_relayd_generic_reply reply; | |
829 | ||
830 | /* Code flow error. Safety net. */ | |
831 | assert(rsock); | |
832 | ||
833 | if (rsock->minor < 4) { | |
834 | DBG("Not sending indexes before protocol 2.4"); | |
835 | ret = 0; | |
836 | goto error; | |
837 | } | |
838 | ||
839 | DBG("Relayd sending index for stream ID %" PRIu64, relay_stream_id); | |
840 | ||
53efb85a | 841 | memset(&msg, 0, sizeof(msg)); |
1c20f0e2 JD |
842 | msg.relay_stream_id = htobe64(relay_stream_id); |
843 | msg.net_seq_num = htobe64(net_seq_num); | |
844 | ||
845 | /* The index is already in big endian. */ | |
846 | msg.packet_size = index->packet_size; | |
847 | msg.content_size = index->content_size; | |
848 | msg.timestamp_begin = index->timestamp_begin; | |
849 | msg.timestamp_end = index->timestamp_end; | |
850 | msg.events_discarded = index->events_discarded; | |
851 | msg.stream_id = index->stream_id; | |
852 | ||
234cd636 JD |
853 | if (rsock->minor >= 8) { |
854 | msg.stream_instance_id = index->stream_instance_id; | |
855 | msg.packet_seq_num = index->packet_seq_num; | |
856 | } | |
857 | ||
1c20f0e2 | 858 | /* Send command */ |
f8f3885c MD |
859 | ret = send_command(rsock, RELAYD_SEND_INDEX, &msg, |
860 | lttcomm_relayd_index_len(lttng_to_index_major(rsock->major, | |
861 | rsock->minor), | |
862 | lttng_to_index_minor(rsock->major, rsock->minor)), | |
863 | 0); | |
1c20f0e2 JD |
864 | if (ret < 0) { |
865 | goto error; | |
866 | } | |
867 | ||
868 | /* Receive response */ | |
869 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); | |
870 | if (ret < 0) { | |
871 | goto error; | |
872 | } | |
873 | ||
874 | reply.ret_code = be32toh(reply.ret_code); | |
875 | ||
876 | /* Return session id or negative ret code. */ | |
877 | if (reply.ret_code != LTTNG_OK) { | |
878 | ret = -1; | |
879 | ERR("Relayd send index replied error %d", reply.ret_code); | |
880 | } else { | |
881 | /* Success */ | |
882 | ret = 0; | |
883 | } | |
884 | ||
885 | error: | |
886 | return ret; | |
887 | } | |
93ec662e JD |
888 | |
889 | /* | |
890 | * Ask the relay to reset the metadata trace file (regeneration). | |
891 | */ | |
892 | int relayd_reset_metadata(struct lttcomm_relayd_sock *rsock, | |
893 | uint64_t stream_id, uint64_t version) | |
894 | { | |
895 | int ret; | |
896 | struct lttcomm_relayd_reset_metadata msg; | |
897 | struct lttcomm_relayd_generic_reply reply; | |
898 | ||
899 | /* Code flow error. Safety net. */ | |
900 | assert(rsock); | |
901 | ||
902 | /* Should have been prevented by the sessiond. */ | |
903 | if (rsock->minor < 8) { | |
904 | ERR("Metadata regeneration unsupported before 2.8"); | |
905 | ret = -1; | |
906 | goto error; | |
907 | } | |
908 | ||
909 | DBG("Relayd reset metadata stream id %" PRIu64, stream_id); | |
910 | ||
911 | memset(&msg, 0, sizeof(msg)); | |
912 | msg.stream_id = htobe64(stream_id); | |
913 | msg.version = htobe64(version); | |
914 | ||
915 | /* Send command */ | |
916 | ret = send_command(rsock, RELAYD_RESET_METADATA, (void *) &msg, sizeof(msg), 0); | |
917 | if (ret < 0) { | |
918 | goto error; | |
919 | } | |
920 | ||
921 | /* Receive response */ | |
922 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); | |
923 | if (ret < 0) { | |
924 | goto error; | |
925 | } | |
926 | ||
927 | reply.ret_code = be32toh(reply.ret_code); | |
928 | ||
929 | /* Return session id or negative ret code. */ | |
930 | if (reply.ret_code != LTTNG_OK) { | |
931 | ret = -1; | |
932 | ERR("Relayd reset metadata replied error %d", reply.ret_code); | |
933 | } else { | |
934 | /* Success */ | |
935 | ret = 0; | |
936 | } | |
937 | ||
938 | DBG("Relayd reset metadata stream id %" PRIu64 " successfully", stream_id); | |
939 | ||
940 | error: | |
941 | return ret; | |
942 | } |