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 | ||
246777db MD |
132 | if (strlen(session_name) >= sizeof(msg.session_name)) { |
133 | ret = -1; | |
134 | goto error; | |
135 | } | |
d3e2ba59 | 136 | strncpy(msg.session_name, session_name, sizeof(msg.session_name)); |
246777db MD |
137 | if (strlen(hostname) >= sizeof(msg.hostname)) { |
138 | ret = -1; | |
139 | goto error; | |
140 | } | |
d3e2ba59 JD |
141 | strncpy(msg.hostname, hostname, sizeof(msg.hostname)); |
142 | msg.live_timer = htobe32(session_live_timer); | |
7d2f7452 | 143 | msg.snapshot = htobe32(snapshot); |
d3e2ba59 JD |
144 | |
145 | /* Send command */ | |
146 | ret = send_command(rsock, RELAYD_CREATE_SESSION, &msg, sizeof(msg), 0); | |
147 | if (ret < 0) { | |
148 | goto error; | |
149 | } | |
150 | ||
151 | error: | |
152 | return ret; | |
153 | } | |
154 | ||
155 | /* | |
156 | * RELAYD_CREATE_SESSION from 2.1 to 2.3. | |
157 | */ | |
158 | static int relayd_create_session_2_1(struct lttcomm_relayd_sock *rsock, | |
159 | uint64_t *session_id) | |
160 | { | |
161 | int ret; | |
162 | ||
163 | /* Send command */ | |
164 | ret = send_command(rsock, RELAYD_CREATE_SESSION, NULL, 0, 0); | |
165 | if (ret < 0) { | |
166 | goto error; | |
167 | } | |
168 | ||
169 | error: | |
170 | return ret; | |
171 | } | |
172 | ||
c5b6f4f0 DG |
173 | /* |
174 | * Send a RELAYD_CREATE_SESSION command to the relayd with the given socket and | |
175 | * set session_id of the relayd if we have a successful reply from the relayd. | |
176 | * | |
20275fe8 DG |
177 | * On success, return 0 else a negative value which is either an errno error or |
178 | * a lttng error code from the relayd. | |
c5b6f4f0 | 179 | */ |
d3e2ba59 | 180 | int relayd_create_session(struct lttcomm_relayd_sock *rsock, uint64_t *session_id, |
7d2f7452 DG |
181 | char *session_name, char *hostname, int session_live_timer, |
182 | unsigned int snapshot) | |
c5b6f4f0 DG |
183 | { |
184 | int ret; | |
185 | struct lttcomm_relayd_status_session reply; | |
186 | ||
6151a90f | 187 | assert(rsock); |
c5b6f4f0 DG |
188 | assert(session_id); |
189 | ||
190 | DBG("Relayd create session"); | |
191 | ||
d3e2ba59 JD |
192 | switch(rsock->minor) { |
193 | case 1: | |
194 | case 2: | |
195 | case 3: | |
196 | ret = relayd_create_session_2_1(rsock, session_id); | |
31d74dc3 | 197 | break; |
d3e2ba59 JD |
198 | case 4: |
199 | default: | |
7d2f7452 DG |
200 | ret = relayd_create_session_2_4(rsock, session_id, session_name, |
201 | hostname, session_live_timer, snapshot); | |
31d74dc3 | 202 | break; |
d3e2ba59 JD |
203 | } |
204 | ||
c5b6f4f0 DG |
205 | if (ret < 0) { |
206 | goto error; | |
207 | } | |
208 | ||
20275fe8 | 209 | /* Receive response */ |
6151a90f | 210 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
c5b6f4f0 DG |
211 | if (ret < 0) { |
212 | goto error; | |
213 | } | |
214 | ||
215 | reply.session_id = be64toh(reply.session_id); | |
216 | reply.ret_code = be32toh(reply.ret_code); | |
217 | ||
218 | /* Return session id or negative ret code. */ | |
219 | if (reply.ret_code != LTTNG_OK) { | |
bb63afd9 DG |
220 | ret = -1; |
221 | ERR("Relayd create session replied error %d", reply.ret_code); | |
c5b6f4f0 DG |
222 | goto error; |
223 | } else { | |
224 | ret = 0; | |
225 | *session_id = reply.session_id; | |
226 | } | |
227 | ||
228 | DBG("Relayd session created with id %" PRIu64, reply.session_id); | |
229 | ||
230 | error: | |
231 | return ret; | |
232 | } | |
233 | ||
00e2e675 DG |
234 | /* |
235 | * Add stream on the relayd and assign stream handle to the stream_id argument. | |
236 | * | |
237 | * On success return 0 else return ret_code negative value. | |
238 | */ | |
6151a90f | 239 | int relayd_add_stream(struct lttcomm_relayd_sock *rsock, const char *channel_name, |
0f907de1 JD |
240 | const char *pathname, uint64_t *stream_id, |
241 | uint64_t tracefile_size, uint64_t tracefile_count) | |
00e2e675 DG |
242 | { |
243 | int ret; | |
244 | struct lttcomm_relayd_add_stream msg; | |
0f907de1 | 245 | struct lttcomm_relayd_add_stream_2_2 msg_2_2; |
00e2e675 DG |
246 | struct lttcomm_relayd_status_stream reply; |
247 | ||
248 | /* Code flow error. Safety net. */ | |
6151a90f | 249 | assert(rsock); |
00e2e675 DG |
250 | assert(channel_name); |
251 | assert(pathname); | |
252 | ||
253 | DBG("Relayd adding stream for channel name %s", channel_name); | |
254 | ||
0f907de1 JD |
255 | /* Compat with relayd 2.1 */ |
256 | if (rsock->minor == 1) { | |
53efb85a | 257 | memset(&msg, 0, sizeof(msg)); |
246777db MD |
258 | if (strlen(channel_name) >= sizeof(msg.channel_name)) { |
259 | ret = -1; | |
260 | goto error; | |
261 | } | |
0f907de1 | 262 | strncpy(msg.channel_name, channel_name, sizeof(msg.channel_name)); |
246777db MD |
263 | if (strlen(pathname) >= sizeof(msg.pathname)) { |
264 | ret = -1; | |
265 | goto error; | |
266 | } | |
0f907de1 | 267 | strncpy(msg.pathname, pathname, sizeof(msg.pathname)); |
00e2e675 | 268 | |
0f907de1 JD |
269 | /* Send command */ |
270 | ret = send_command(rsock, RELAYD_ADD_STREAM, (void *) &msg, sizeof(msg), 0); | |
271 | if (ret < 0) { | |
272 | goto error; | |
273 | } | |
274 | } else { | |
53efb85a | 275 | memset(&msg_2_2, 0, sizeof(msg_2_2)); |
0f907de1 | 276 | /* Compat with relayd 2.2+ */ |
246777db MD |
277 | if (strlen(channel_name) >= sizeof(msg_2_2.channel_name)) { |
278 | ret = -1; | |
279 | goto error; | |
280 | } | |
0f907de1 | 281 | strncpy(msg_2_2.channel_name, channel_name, sizeof(msg_2_2.channel_name)); |
246777db MD |
282 | if (strlen(pathname) >= sizeof(msg_2_2.pathname)) { |
283 | ret = -1; | |
284 | goto error; | |
285 | } | |
0f907de1 JD |
286 | strncpy(msg_2_2.pathname, pathname, sizeof(msg_2_2.pathname)); |
287 | msg_2_2.tracefile_size = htobe64(tracefile_size); | |
288 | msg_2_2.tracefile_count = htobe64(tracefile_count); | |
289 | ||
290 | /* Send command */ | |
291 | ret = send_command(rsock, RELAYD_ADD_STREAM, (void *) &msg_2_2, sizeof(msg_2_2), 0); | |
292 | if (ret < 0) { | |
293 | goto error; | |
294 | } | |
00e2e675 DG |
295 | } |
296 | ||
633d0084 | 297 | /* Waiting for reply */ |
6151a90f | 298 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
00e2e675 DG |
299 | if (ret < 0) { |
300 | goto error; | |
301 | } | |
302 | ||
303 | /* Back to host bytes order. */ | |
304 | reply.handle = be64toh(reply.handle); | |
305 | reply.ret_code = be32toh(reply.ret_code); | |
306 | ||
307 | /* Return session id or negative ret code. */ | |
f73fabfd | 308 | if (reply.ret_code != LTTNG_OK) { |
bb63afd9 DG |
309 | ret = -1; |
310 | ERR("Relayd add stream replied error %d", reply.ret_code); | |
00e2e675 DG |
311 | } else { |
312 | /* Success */ | |
313 | ret = 0; | |
314 | *stream_id = reply.handle; | |
315 | } | |
316 | ||
77c7c900 MD |
317 | DBG("Relayd stream added successfully with handle %" PRIu64, |
318 | reply.handle); | |
00e2e675 DG |
319 | |
320 | error: | |
321 | return ret; | |
322 | } | |
323 | ||
a4baae1b JD |
324 | /* |
325 | * Inform the relay that all the streams for the current channel has been sent. | |
326 | * | |
327 | * On success return 0 else return ret_code negative value. | |
328 | */ | |
329 | int relayd_streams_sent(struct lttcomm_relayd_sock *rsock) | |
330 | { | |
331 | int ret; | |
332 | struct lttcomm_relayd_generic_reply reply; | |
333 | ||
334 | /* Code flow error. Safety net. */ | |
335 | assert(rsock); | |
336 | ||
337 | DBG("Relayd sending streams sent."); | |
338 | ||
339 | /* This feature was introduced in 2.4, ignore it for earlier versions. */ | |
340 | if (rsock->minor < 4) { | |
341 | ret = 0; | |
342 | goto end; | |
343 | } | |
344 | ||
345 | /* Send command */ | |
346 | ret = send_command(rsock, RELAYD_STREAMS_SENT, NULL, 0, 0); | |
347 | if (ret < 0) { | |
348 | goto error; | |
349 | } | |
350 | ||
351 | /* Waiting for reply */ | |
352 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); | |
353 | if (ret < 0) { | |
354 | goto error; | |
355 | } | |
356 | ||
357 | /* Back to host bytes order. */ | |
358 | reply.ret_code = be32toh(reply.ret_code); | |
359 | ||
360 | /* Return session id or negative ret code. */ | |
361 | if (reply.ret_code != LTTNG_OK) { | |
362 | ret = -1; | |
363 | ERR("Relayd streams sent replied error %d", reply.ret_code); | |
364 | goto error; | |
365 | } else { | |
366 | /* Success */ | |
367 | ret = 0; | |
368 | } | |
369 | ||
370 | DBG("Relayd streams sent success"); | |
371 | ||
372 | error: | |
373 | end: | |
374 | return ret; | |
375 | } | |
376 | ||
00e2e675 DG |
377 | /* |
378 | * Check version numbers on the relayd. | |
d4519fa3 JD |
379 | * If major versions are compatible, we assign minor_to_use to the |
380 | * minor version of the procotol we are going to use for this session. | |
00e2e675 DG |
381 | * |
382 | * Return 0 if compatible else negative value. | |
383 | */ | |
6151a90f | 384 | int relayd_version_check(struct lttcomm_relayd_sock *rsock) |
00e2e675 DG |
385 | { |
386 | int ret; | |
092b6259 | 387 | struct lttcomm_relayd_version msg; |
00e2e675 DG |
388 | |
389 | /* Code flow error. Safety net. */ | |
6151a90f | 390 | assert(rsock); |
00e2e675 | 391 | |
6151a90f JD |
392 | DBG("Relayd version check for major.minor %u.%u", rsock->major, |
393 | rsock->minor); | |
00e2e675 | 394 | |
53efb85a | 395 | memset(&msg, 0, sizeof(msg)); |
092b6259 | 396 | /* Prepare network byte order before transmission. */ |
6151a90f JD |
397 | msg.major = htobe32(rsock->major); |
398 | msg.minor = htobe32(rsock->minor); | |
092b6259 | 399 | |
00e2e675 | 400 | /* Send command */ |
6151a90f | 401 | ret = send_command(rsock, RELAYD_VERSION, (void *) &msg, sizeof(msg), 0); |
00e2e675 DG |
402 | if (ret < 0) { |
403 | goto error; | |
404 | } | |
405 | ||
20275fe8 | 406 | /* Receive response */ |
6151a90f | 407 | ret = recv_reply(rsock, (void *) &msg, sizeof(msg)); |
00e2e675 DG |
408 | if (ret < 0) { |
409 | goto error; | |
410 | } | |
411 | ||
412 | /* Set back to host bytes order */ | |
092b6259 DG |
413 | msg.major = be32toh(msg.major); |
414 | msg.minor = be32toh(msg.minor); | |
415 | ||
416 | /* | |
417 | * Only validate the major version. If the other side is higher, | |
418 | * communication is not possible. Only major version equal can talk to each | |
419 | * other. If the minor version differs, the lowest version is used by both | |
420 | * sides. | |
092b6259 | 421 | */ |
6151a90f | 422 | if (msg.major != rsock->major) { |
d4519fa3 JD |
423 | /* Not compatible */ |
424 | ret = -1; | |
425 | DBG2("Relayd version is NOT compatible. Relayd version %u != %u (us)", | |
6151a90f | 426 | msg.major, rsock->major); |
092b6259 | 427 | goto error; |
00e2e675 DG |
428 | } |
429 | ||
092b6259 | 430 | /* |
6151a90f JD |
431 | * If the relayd's minor version is higher, it will adapt to our version so |
432 | * we can continue to use the latest relayd communication data structure. | |
433 | * If the received minor version is higher, the relayd should adapt to us. | |
092b6259 | 434 | */ |
6151a90f JD |
435 | if (rsock->minor > msg.minor) { |
436 | rsock->minor = msg.minor; | |
d4519fa3 | 437 | } |
092b6259 | 438 | |
d4519fa3 JD |
439 | /* Version number compatible */ |
440 | DBG2("Relayd version is compatible, using protocol version %u.%u", | |
6151a90f | 441 | rsock->major, rsock->minor); |
d4519fa3 | 442 | ret = 0; |
00e2e675 DG |
443 | |
444 | error: | |
445 | return ret; | |
446 | } | |
447 | ||
00e2e675 DG |
448 | /* |
449 | * Add stream on the relayd and assign stream handle to the stream_id argument. | |
450 | * | |
451 | * On success return 0 else return ret_code negative value. | |
452 | */ | |
6151a90f | 453 | int relayd_send_metadata(struct lttcomm_relayd_sock *rsock, size_t len) |
00e2e675 DG |
454 | { |
455 | int ret; | |
456 | ||
457 | /* Code flow error. Safety net. */ | |
6151a90f | 458 | assert(rsock); |
00e2e675 | 459 | |
77c7c900 | 460 | DBG("Relayd sending metadata of size %zu", len); |
00e2e675 DG |
461 | |
462 | /* Send command */ | |
6151a90f | 463 | ret = send_command(rsock, RELAYD_SEND_METADATA, NULL, len, 0); |
00e2e675 DG |
464 | if (ret < 0) { |
465 | goto error; | |
466 | } | |
467 | ||
468 | DBG2("Relayd metadata added successfully"); | |
469 | ||
470 | /* | |
471 | * After that call, the metadata data MUST be sent to the relayd so the | |
472 | * receive size on the other end matches the len of the metadata packet | |
633d0084 | 473 | * header. This is why we don't wait for a reply here. |
00e2e675 DG |
474 | */ |
475 | ||
476 | error: | |
477 | return ret; | |
478 | } | |
479 | ||
480 | /* | |
6151a90f | 481 | * Connect to relay daemon with an allocated lttcomm_relayd_sock. |
00e2e675 | 482 | */ |
6151a90f | 483 | int relayd_connect(struct lttcomm_relayd_sock *rsock) |
00e2e675 DG |
484 | { |
485 | /* Code flow error. Safety net. */ | |
6151a90f | 486 | assert(rsock); |
00e2e675 | 487 | |
f96e4545 MD |
488 | if (!rsock->sock.ops) { |
489 | /* | |
490 | * Attempting a connect on a non-initialized socket. | |
491 | */ | |
492 | return -ECONNRESET; | |
493 | } | |
494 | ||
00e2e675 DG |
495 | DBG3("Relayd connect ..."); |
496 | ||
6151a90f | 497 | return rsock->sock.ops->connect(&rsock->sock); |
00e2e675 DG |
498 | } |
499 | ||
500 | /* | |
6151a90f | 501 | * Close relayd socket with an allocated lttcomm_relayd_sock. |
ffe60014 DG |
502 | * |
503 | * If no socket operations are found, simply return 0 meaning that everything | |
504 | * is fine. Without operations, the socket can not possibly be opened or used. | |
505 | * This is possible if the socket was allocated but not created. However, the | |
506 | * caller could simply use it to store a valid file descriptor for instance | |
507 | * passed over a Unix socket and call this to cleanup but still without a valid | |
508 | * ops pointer. | |
509 | * | |
510 | * Return the close returned value. On error, a negative value is usually | |
511 | * returned back from close(2). | |
00e2e675 | 512 | */ |
6151a90f | 513 | int relayd_close(struct lttcomm_relayd_sock *rsock) |
00e2e675 | 514 | { |
ffe60014 DG |
515 | int ret; |
516 | ||
00e2e675 | 517 | /* Code flow error. Safety net. */ |
6151a90f | 518 | assert(rsock); |
00e2e675 | 519 | |
ffe60014 | 520 | /* An invalid fd is fine, return success. */ |
6151a90f | 521 | if (rsock->sock.fd < 0) { |
ffe60014 DG |
522 | ret = 0; |
523 | goto end; | |
524 | } | |
525 | ||
6151a90f | 526 | DBG3("Relayd closing socket %d", rsock->sock.fd); |
00e2e675 | 527 | |
6151a90f JD |
528 | if (rsock->sock.ops) { |
529 | ret = rsock->sock.ops->close(&rsock->sock); | |
ffe60014 DG |
530 | } else { |
531 | /* Default call if no specific ops found. */ | |
6151a90f | 532 | ret = close(rsock->sock.fd); |
ffe60014 DG |
533 | if (ret < 0) { |
534 | PERROR("relayd_close default close"); | |
535 | } | |
536 | } | |
f96e4545 | 537 | rsock->sock.fd = -1; |
ffe60014 DG |
538 | |
539 | end: | |
540 | return ret; | |
00e2e675 DG |
541 | } |
542 | ||
543 | /* | |
544 | * Send data header structure to the relayd. | |
545 | */ | |
6151a90f | 546 | int relayd_send_data_hdr(struct lttcomm_relayd_sock *rsock, |
00e2e675 DG |
547 | struct lttcomm_relayd_data_hdr *hdr, size_t size) |
548 | { | |
549 | int ret; | |
550 | ||
551 | /* Code flow error. Safety net. */ | |
6151a90f | 552 | assert(rsock); |
00e2e675 DG |
553 | assert(hdr); |
554 | ||
f96e4545 MD |
555 | if (rsock->sock.fd < 0) { |
556 | return -ECONNRESET; | |
557 | } | |
558 | ||
8fd623e0 | 559 | DBG3("Relayd sending data header of size %zu", size); |
00e2e675 DG |
560 | |
561 | /* Again, safety net */ | |
562 | if (size == 0) { | |
563 | size = sizeof(struct lttcomm_relayd_data_hdr); | |
564 | } | |
565 | ||
566 | /* Only send data header. */ | |
6151a90f | 567 | ret = rsock->sock.ops->sendmsg(&rsock->sock, hdr, size, 0); |
00e2e675 | 568 | if (ret < 0) { |
8994307f | 569 | ret = -errno; |
00e2e675 DG |
570 | goto error; |
571 | } | |
572 | ||
573 | /* | |
574 | * The data MUST be sent right after that command for the receive on the | |
575 | * other end to match the size in the header. | |
576 | */ | |
577 | ||
578 | error: | |
579 | return ret; | |
580 | } | |
173af62f DG |
581 | |
582 | /* | |
583 | * Send close stream command to the relayd. | |
584 | */ | |
6151a90f | 585 | int relayd_send_close_stream(struct lttcomm_relayd_sock *rsock, uint64_t stream_id, |
173af62f DG |
586 | uint64_t last_net_seq_num) |
587 | { | |
588 | int ret; | |
589 | struct lttcomm_relayd_close_stream msg; | |
590 | struct lttcomm_relayd_generic_reply reply; | |
591 | ||
592 | /* Code flow error. Safety net. */ | |
6151a90f | 593 | assert(rsock); |
173af62f | 594 | |
77c7c900 | 595 | DBG("Relayd closing stream id %" PRIu64, stream_id); |
173af62f | 596 | |
53efb85a | 597 | memset(&msg, 0, sizeof(msg)); |
173af62f DG |
598 | msg.stream_id = htobe64(stream_id); |
599 | msg.last_net_seq_num = htobe64(last_net_seq_num); | |
600 | ||
601 | /* Send command */ | |
6151a90f | 602 | ret = send_command(rsock, RELAYD_CLOSE_STREAM, (void *) &msg, sizeof(msg), 0); |
173af62f DG |
603 | if (ret < 0) { |
604 | goto error; | |
605 | } | |
606 | ||
20275fe8 | 607 | /* Receive response */ |
6151a90f | 608 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
173af62f DG |
609 | if (ret < 0) { |
610 | goto error; | |
611 | } | |
612 | ||
613 | reply.ret_code = be32toh(reply.ret_code); | |
614 | ||
615 | /* Return session id or negative ret code. */ | |
f73fabfd | 616 | if (reply.ret_code != LTTNG_OK) { |
bb63afd9 DG |
617 | ret = -1; |
618 | ERR("Relayd close stream replied error %d", reply.ret_code); | |
173af62f DG |
619 | } else { |
620 | /* Success */ | |
621 | ret = 0; | |
622 | } | |
623 | ||
77c7c900 | 624 | DBG("Relayd close stream id %" PRIu64 " successfully", stream_id); |
173af62f DG |
625 | |
626 | error: | |
627 | return ret; | |
628 | } | |
c8f59ee5 DG |
629 | |
630 | /* | |
631 | * Check for data availability for a given stream id. | |
632 | * | |
6d805429 | 633 | * Return 0 if NOT pending, 1 if so and a negative value on error. |
c8f59ee5 | 634 | */ |
6151a90f | 635 | int relayd_data_pending(struct lttcomm_relayd_sock *rsock, uint64_t stream_id, |
c8f59ee5 DG |
636 | uint64_t last_net_seq_num) |
637 | { | |
638 | int ret; | |
6d805429 | 639 | struct lttcomm_relayd_data_pending msg; |
c8f59ee5 DG |
640 | struct lttcomm_relayd_generic_reply reply; |
641 | ||
642 | /* Code flow error. Safety net. */ | |
6151a90f | 643 | assert(rsock); |
c8f59ee5 | 644 | |
6d805429 | 645 | DBG("Relayd data pending for stream id %" PRIu64, stream_id); |
c8f59ee5 | 646 | |
53efb85a | 647 | memset(&msg, 0, sizeof(msg)); |
c8f59ee5 DG |
648 | msg.stream_id = htobe64(stream_id); |
649 | msg.last_net_seq_num = htobe64(last_net_seq_num); | |
650 | ||
651 | /* Send command */ | |
6151a90f | 652 | ret = send_command(rsock, RELAYD_DATA_PENDING, (void *) &msg, |
c8f59ee5 DG |
653 | sizeof(msg), 0); |
654 | if (ret < 0) { | |
655 | goto error; | |
656 | } | |
657 | ||
20275fe8 | 658 | /* Receive response */ |
6151a90f | 659 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
c8f59ee5 DG |
660 | if (ret < 0) { |
661 | goto error; | |
662 | } | |
663 | ||
664 | reply.ret_code = be32toh(reply.ret_code); | |
665 | ||
666 | /* Return session id or negative ret code. */ | |
667 | if (reply.ret_code >= LTTNG_OK) { | |
bb63afd9 | 668 | ERR("Relayd data pending replied error %d", reply.ret_code); |
c8f59ee5 DG |
669 | } |
670 | ||
671 | /* At this point, the ret code is either 1 or 0 */ | |
672 | ret = reply.ret_code; | |
673 | ||
6d805429 | 674 | DBG("Relayd data is %s pending for stream id %" PRIu64, |
9dd26bb9 | 675 | ret == 1 ? "" : "NOT", stream_id); |
c8f59ee5 DG |
676 | |
677 | error: | |
678 | return ret; | |
679 | } | |
680 | ||
681 | /* | |
682 | * Check on the relayd side for a quiescent state on the control socket. | |
683 | */ | |
6151a90f | 684 | int relayd_quiescent_control(struct lttcomm_relayd_sock *rsock, |
ad7051c0 | 685 | uint64_t metadata_stream_id) |
c8f59ee5 DG |
686 | { |
687 | int ret; | |
ad7051c0 | 688 | struct lttcomm_relayd_quiescent_control msg; |
c8f59ee5 DG |
689 | struct lttcomm_relayd_generic_reply reply; |
690 | ||
691 | /* Code flow error. Safety net. */ | |
6151a90f | 692 | assert(rsock); |
c8f59ee5 DG |
693 | |
694 | DBG("Relayd checking quiescent control state"); | |
695 | ||
53efb85a | 696 | memset(&msg, 0, sizeof(msg)); |
ad7051c0 DG |
697 | msg.stream_id = htobe64(metadata_stream_id); |
698 | ||
c8f59ee5 | 699 | /* Send command */ |
6151a90f | 700 | ret = send_command(rsock, RELAYD_QUIESCENT_CONTROL, &msg, sizeof(msg), 0); |
c8f59ee5 DG |
701 | if (ret < 0) { |
702 | goto error; | |
703 | } | |
704 | ||
20275fe8 | 705 | /* Receive response */ |
6151a90f | 706 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
c8f59ee5 DG |
707 | if (ret < 0) { |
708 | goto error; | |
709 | } | |
710 | ||
711 | reply.ret_code = be32toh(reply.ret_code); | |
712 | ||
713 | /* Return session id or negative ret code. */ | |
714 | if (reply.ret_code != LTTNG_OK) { | |
bb63afd9 DG |
715 | ret = -1; |
716 | ERR("Relayd quiescent control replied error %d", reply.ret_code); | |
c8f59ee5 DG |
717 | goto error; |
718 | } | |
719 | ||
720 | /* Control socket is quiescent */ | |
6d805429 | 721 | return 0; |
c8f59ee5 DG |
722 | |
723 | error: | |
724 | return ret; | |
725 | } | |
f7079f67 DG |
726 | |
727 | /* | |
728 | * Begin a data pending command for a specific session id. | |
729 | */ | |
6151a90f | 730 | int relayd_begin_data_pending(struct lttcomm_relayd_sock *rsock, uint64_t id) |
f7079f67 DG |
731 | { |
732 | int ret; | |
733 | struct lttcomm_relayd_begin_data_pending msg; | |
734 | struct lttcomm_relayd_generic_reply reply; | |
735 | ||
736 | /* Code flow error. Safety net. */ | |
6151a90f | 737 | assert(rsock); |
f7079f67 DG |
738 | |
739 | DBG("Relayd begin data pending"); | |
740 | ||
53efb85a | 741 | memset(&msg, 0, sizeof(msg)); |
f7079f67 DG |
742 | msg.session_id = htobe64(id); |
743 | ||
744 | /* Send command */ | |
6151a90f | 745 | ret = send_command(rsock, RELAYD_BEGIN_DATA_PENDING, &msg, sizeof(msg), 0); |
f7079f67 DG |
746 | if (ret < 0) { |
747 | goto error; | |
748 | } | |
749 | ||
20275fe8 | 750 | /* Receive response */ |
6151a90f | 751 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
f7079f67 DG |
752 | if (ret < 0) { |
753 | goto error; | |
754 | } | |
755 | ||
756 | reply.ret_code = be32toh(reply.ret_code); | |
757 | ||
758 | /* Return session id or negative ret code. */ | |
759 | if (reply.ret_code != LTTNG_OK) { | |
bb63afd9 DG |
760 | ret = -1; |
761 | ERR("Relayd begin data pending replied error %d", reply.ret_code); | |
f7079f67 DG |
762 | goto error; |
763 | } | |
764 | ||
765 | return 0; | |
766 | ||
767 | error: | |
768 | return ret; | |
769 | } | |
770 | ||
771 | /* | |
772 | * End a data pending command for a specific session id. | |
773 | * | |
774 | * Return 0 on success and set is_data_inflight to 0 if no data is being | |
775 | * streamed or 1 if it is the case. | |
776 | */ | |
6151a90f | 777 | int relayd_end_data_pending(struct lttcomm_relayd_sock *rsock, uint64_t id, |
f7079f67 DG |
778 | unsigned int *is_data_inflight) |
779 | { | |
af6c30b5 | 780 | int ret, recv_ret; |
f7079f67 DG |
781 | struct lttcomm_relayd_end_data_pending msg; |
782 | struct lttcomm_relayd_generic_reply reply; | |
783 | ||
784 | /* Code flow error. Safety net. */ | |
6151a90f | 785 | assert(rsock); |
f7079f67 DG |
786 | |
787 | DBG("Relayd end data pending"); | |
788 | ||
53efb85a | 789 | memset(&msg, 0, sizeof(msg)); |
f7079f67 DG |
790 | msg.session_id = htobe64(id); |
791 | ||
792 | /* Send command */ | |
6151a90f | 793 | ret = send_command(rsock, RELAYD_END_DATA_PENDING, &msg, sizeof(msg), 0); |
f7079f67 DG |
794 | if (ret < 0) { |
795 | goto error; | |
796 | } | |
797 | ||
20275fe8 | 798 | /* Receive response */ |
6151a90f | 799 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
f7079f67 DG |
800 | if (ret < 0) { |
801 | goto error; | |
802 | } | |
803 | ||
af6c30b5 DG |
804 | recv_ret = be32toh(reply.ret_code); |
805 | if (recv_ret < 0) { | |
806 | ret = recv_ret; | |
f7079f67 DG |
807 | goto error; |
808 | } | |
809 | ||
af6c30b5 | 810 | *is_data_inflight = recv_ret; |
f7079f67 | 811 | |
af6c30b5 | 812 | DBG("Relayd end data pending is data inflight: %d", recv_ret); |
f7079f67 DG |
813 | |
814 | return 0; | |
815 | ||
816 | error: | |
817 | return ret; | |
818 | } | |
1c20f0e2 JD |
819 | |
820 | /* | |
821 | * Send index to the relayd. | |
822 | */ | |
823 | int relayd_send_index(struct lttcomm_relayd_sock *rsock, | |
50adc264 | 824 | struct ctf_packet_index *index, uint64_t relay_stream_id, |
1c20f0e2 JD |
825 | uint64_t net_seq_num) |
826 | { | |
827 | int ret; | |
828 | struct lttcomm_relayd_index msg; | |
829 | struct lttcomm_relayd_generic_reply reply; | |
830 | ||
831 | /* Code flow error. Safety net. */ | |
832 | assert(rsock); | |
833 | ||
834 | if (rsock->minor < 4) { | |
835 | DBG("Not sending indexes before protocol 2.4"); | |
836 | ret = 0; | |
837 | goto error; | |
838 | } | |
839 | ||
840 | DBG("Relayd sending index for stream ID %" PRIu64, relay_stream_id); | |
841 | ||
53efb85a | 842 | memset(&msg, 0, sizeof(msg)); |
1c20f0e2 JD |
843 | msg.relay_stream_id = htobe64(relay_stream_id); |
844 | msg.net_seq_num = htobe64(net_seq_num); | |
845 | ||
846 | /* The index is already in big endian. */ | |
847 | msg.packet_size = index->packet_size; | |
848 | msg.content_size = index->content_size; | |
849 | msg.timestamp_begin = index->timestamp_begin; | |
850 | msg.timestamp_end = index->timestamp_end; | |
851 | msg.events_discarded = index->events_discarded; | |
852 | msg.stream_id = index->stream_id; | |
853 | ||
234cd636 JD |
854 | if (rsock->minor >= 8) { |
855 | msg.stream_instance_id = index->stream_instance_id; | |
856 | msg.packet_seq_num = index->packet_seq_num; | |
857 | } | |
858 | ||
1c20f0e2 JD |
859 | /* Send command */ |
860 | ret = send_command(rsock, RELAYD_SEND_INDEX, &msg, sizeof(msg), 0); | |
861 | if (ret < 0) { | |
862 | goto error; | |
863 | } | |
864 | ||
865 | /* Receive response */ | |
866 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); | |
867 | if (ret < 0) { | |
868 | goto error; | |
869 | } | |
870 | ||
871 | reply.ret_code = be32toh(reply.ret_code); | |
872 | ||
873 | /* Return session id or negative ret code. */ | |
874 | if (reply.ret_code != LTTNG_OK) { | |
875 | ret = -1; | |
876 | ERR("Relayd send index replied error %d", reply.ret_code); | |
877 | } else { | |
878 | /* Success */ | |
879 | ret = 0; | |
880 | } | |
881 | ||
882 | error: | |
883 | return ret; | |
884 | } |