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 | ||
18 | #define _GNU_SOURCE | |
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> | |
28 | #include <common/sessiond-comm/relayd.h> | |
1c20f0e2 | 29 | #include <common/index/lttng-index.h> |
00e2e675 DG |
30 | |
31 | #include "relayd.h" | |
32 | ||
33 | /* | |
34 | * Send command. Fill up the header and append the data. | |
35 | */ | |
6151a90f | 36 | static int send_command(struct lttcomm_relayd_sock *rsock, |
7c9534d6 | 37 | enum lttcomm_relayd_command cmd, void *data, size_t size, |
00e2e675 DG |
38 | int flags) |
39 | { | |
40 | int ret; | |
41 | struct lttcomm_relayd_hdr header; | |
42 | char *buf; | |
43 | uint64_t buf_size = sizeof(header); | |
44 | ||
f96e4545 MD |
45 | if (rsock->sock.fd < 0) { |
46 | return -ECONNRESET; | |
47 | } | |
48 | ||
00e2e675 DG |
49 | if (data) { |
50 | buf_size += size; | |
51 | } | |
52 | ||
53 | buf = zmalloc(buf_size); | |
54 | if (buf == NULL) { | |
55 | PERROR("zmalloc relayd send command buf"); | |
56 | ret = -1; | |
57 | goto alloc_error; | |
58 | } | |
59 | ||
60 | header.cmd = htobe32(cmd); | |
61 | header.data_size = htobe64(size); | |
62 | ||
63 | /* Zeroed for now since not used. */ | |
64 | header.cmd_version = 0; | |
65 | header.circuit_id = 0; | |
66 | ||
67 | /* Prepare buffer to send. */ | |
68 | memcpy(buf, &header, sizeof(header)); | |
69 | if (data) { | |
70 | memcpy(buf + sizeof(header), data, size); | |
71 | } | |
72 | ||
6151a90f | 73 | ret = rsock->sock.ops->sendmsg(&rsock->sock, buf, buf_size, flags); |
00e2e675 | 74 | if (ret < 0) { |
8994307f | 75 | ret = -errno; |
00e2e675 DG |
76 | goto error; |
77 | } | |
78 | ||
633d0084 | 79 | DBG3("Relayd sending command %d of size %" PRIu64, cmd, buf_size); |
00e2e675 DG |
80 | |
81 | error: | |
82 | free(buf); | |
83 | alloc_error: | |
84 | return ret; | |
85 | } | |
86 | ||
87 | /* | |
88 | * Receive reply data on socket. This MUST be call after send_command or else | |
89 | * could result in unexpected behavior(s). | |
90 | */ | |
6151a90f | 91 | static int recv_reply(struct lttcomm_relayd_sock *rsock, void *data, size_t size) |
00e2e675 DG |
92 | { |
93 | int ret; | |
94 | ||
f96e4545 MD |
95 | if (rsock->sock.fd < 0) { |
96 | return -ECONNRESET; | |
97 | } | |
98 | ||
8fd623e0 | 99 | DBG3("Relayd waiting for reply of size %zu", size); |
00e2e675 | 100 | |
6151a90f | 101 | ret = rsock->sock.ops->recvmsg(&rsock->sock, data, size, 0); |
20275fe8 DG |
102 | if (ret <= 0 || ret != size) { |
103 | if (ret == 0) { | |
104 | /* Orderly shutdown. */ | |
6151a90f | 105 | DBG("Socket %d has performed an orderly shutdown", rsock->sock.fd); |
20275fe8 | 106 | } else { |
8fd623e0 | 107 | DBG("Receiving reply failed on sock %d for size %zu with ret %d", |
6151a90f | 108 | rsock->sock.fd, size, ret); |
20275fe8 DG |
109 | } |
110 | /* Always return -1 here and the caller can use errno. */ | |
111 | ret = -1; | |
00e2e675 DG |
112 | goto error; |
113 | } | |
114 | ||
115 | error: | |
116 | return ret; | |
117 | } | |
118 | ||
c5b6f4f0 DG |
119 | /* |
120 | * Send a RELAYD_CREATE_SESSION command to the relayd with the given socket and | |
121 | * set session_id of the relayd if we have a successful reply from the relayd. | |
122 | * | |
20275fe8 DG |
123 | * On success, return 0 else a negative value which is either an errno error or |
124 | * a lttng error code from the relayd. | |
c5b6f4f0 | 125 | */ |
6151a90f | 126 | int relayd_create_session(struct lttcomm_relayd_sock *rsock, uint64_t *session_id) |
c5b6f4f0 DG |
127 | { |
128 | int ret; | |
129 | struct lttcomm_relayd_status_session reply; | |
130 | ||
6151a90f | 131 | assert(rsock); |
c5b6f4f0 DG |
132 | assert(session_id); |
133 | ||
134 | DBG("Relayd create session"); | |
135 | ||
136 | /* Send command */ | |
6151a90f | 137 | ret = send_command(rsock, RELAYD_CREATE_SESSION, NULL, 0, 0); |
c5b6f4f0 DG |
138 | if (ret < 0) { |
139 | goto error; | |
140 | } | |
141 | ||
20275fe8 | 142 | /* Receive response */ |
6151a90f | 143 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
c5b6f4f0 DG |
144 | if (ret < 0) { |
145 | goto error; | |
146 | } | |
147 | ||
148 | reply.session_id = be64toh(reply.session_id); | |
149 | reply.ret_code = be32toh(reply.ret_code); | |
150 | ||
151 | /* Return session id or negative ret code. */ | |
152 | if (reply.ret_code != LTTNG_OK) { | |
bb63afd9 DG |
153 | ret = -1; |
154 | ERR("Relayd create session replied error %d", reply.ret_code); | |
c5b6f4f0 DG |
155 | goto error; |
156 | } else { | |
157 | ret = 0; | |
158 | *session_id = reply.session_id; | |
159 | } | |
160 | ||
161 | DBG("Relayd session created with id %" PRIu64, reply.session_id); | |
162 | ||
163 | error: | |
164 | return ret; | |
165 | } | |
166 | ||
00e2e675 DG |
167 | /* |
168 | * Add stream on the relayd and assign stream handle to the stream_id argument. | |
169 | * | |
170 | * On success return 0 else return ret_code negative value. | |
171 | */ | |
6151a90f | 172 | int relayd_add_stream(struct lttcomm_relayd_sock *rsock, const char *channel_name, |
0f907de1 JD |
173 | const char *pathname, uint64_t *stream_id, |
174 | uint64_t tracefile_size, uint64_t tracefile_count) | |
00e2e675 DG |
175 | { |
176 | int ret; | |
177 | struct lttcomm_relayd_add_stream msg; | |
0f907de1 | 178 | struct lttcomm_relayd_add_stream_2_2 msg_2_2; |
00e2e675 DG |
179 | struct lttcomm_relayd_status_stream reply; |
180 | ||
181 | /* Code flow error. Safety net. */ | |
6151a90f | 182 | assert(rsock); |
00e2e675 DG |
183 | assert(channel_name); |
184 | assert(pathname); | |
185 | ||
186 | DBG("Relayd adding stream for channel name %s", channel_name); | |
187 | ||
0f907de1 JD |
188 | /* Compat with relayd 2.1 */ |
189 | if (rsock->minor == 1) { | |
190 | strncpy(msg.channel_name, channel_name, sizeof(msg.channel_name)); | |
191 | strncpy(msg.pathname, pathname, sizeof(msg.pathname)); | |
00e2e675 | 192 | |
0f907de1 JD |
193 | /* Send command */ |
194 | ret = send_command(rsock, RELAYD_ADD_STREAM, (void *) &msg, sizeof(msg), 0); | |
195 | if (ret < 0) { | |
196 | goto error; | |
197 | } | |
198 | } else { | |
199 | /* Compat with relayd 2.2+ */ | |
200 | strncpy(msg_2_2.channel_name, channel_name, sizeof(msg_2_2.channel_name)); | |
201 | strncpy(msg_2_2.pathname, pathname, sizeof(msg_2_2.pathname)); | |
202 | msg_2_2.tracefile_size = htobe64(tracefile_size); | |
203 | msg_2_2.tracefile_count = htobe64(tracefile_count); | |
204 | ||
205 | /* Send command */ | |
206 | ret = send_command(rsock, RELAYD_ADD_STREAM, (void *) &msg_2_2, sizeof(msg_2_2), 0); | |
207 | if (ret < 0) { | |
208 | goto error; | |
209 | } | |
00e2e675 DG |
210 | } |
211 | ||
633d0084 | 212 | /* Waiting for reply */ |
6151a90f | 213 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
00e2e675 DG |
214 | if (ret < 0) { |
215 | goto error; | |
216 | } | |
217 | ||
218 | /* Back to host bytes order. */ | |
219 | reply.handle = be64toh(reply.handle); | |
220 | reply.ret_code = be32toh(reply.ret_code); | |
221 | ||
222 | /* Return session id or negative ret code. */ | |
f73fabfd | 223 | if (reply.ret_code != LTTNG_OK) { |
bb63afd9 DG |
224 | ret = -1; |
225 | ERR("Relayd add stream replied error %d", reply.ret_code); | |
00e2e675 DG |
226 | } else { |
227 | /* Success */ | |
228 | ret = 0; | |
229 | *stream_id = reply.handle; | |
230 | } | |
231 | ||
77c7c900 MD |
232 | DBG("Relayd stream added successfully with handle %" PRIu64, |
233 | reply.handle); | |
00e2e675 DG |
234 | |
235 | error: | |
236 | return ret; | |
237 | } | |
238 | ||
239 | /* | |
240 | * Check version numbers on the relayd. | |
d4519fa3 JD |
241 | * If major versions are compatible, we assign minor_to_use to the |
242 | * minor version of the procotol we are going to use for this session. | |
00e2e675 DG |
243 | * |
244 | * Return 0 if compatible else negative value. | |
245 | */ | |
6151a90f | 246 | int relayd_version_check(struct lttcomm_relayd_sock *rsock) |
00e2e675 DG |
247 | { |
248 | int ret; | |
092b6259 | 249 | struct lttcomm_relayd_version msg; |
00e2e675 DG |
250 | |
251 | /* Code flow error. Safety net. */ | |
6151a90f | 252 | assert(rsock); |
00e2e675 | 253 | |
6151a90f JD |
254 | DBG("Relayd version check for major.minor %u.%u", rsock->major, |
255 | rsock->minor); | |
00e2e675 | 256 | |
092b6259 | 257 | /* Prepare network byte order before transmission. */ |
6151a90f JD |
258 | msg.major = htobe32(rsock->major); |
259 | msg.minor = htobe32(rsock->minor); | |
092b6259 | 260 | |
00e2e675 | 261 | /* Send command */ |
6151a90f | 262 | ret = send_command(rsock, RELAYD_VERSION, (void *) &msg, sizeof(msg), 0); |
00e2e675 DG |
263 | if (ret < 0) { |
264 | goto error; | |
265 | } | |
266 | ||
20275fe8 | 267 | /* Receive response */ |
6151a90f | 268 | ret = recv_reply(rsock, (void *) &msg, sizeof(msg)); |
00e2e675 DG |
269 | if (ret < 0) { |
270 | goto error; | |
271 | } | |
272 | ||
273 | /* Set back to host bytes order */ | |
092b6259 DG |
274 | msg.major = be32toh(msg.major); |
275 | msg.minor = be32toh(msg.minor); | |
276 | ||
277 | /* | |
278 | * Only validate the major version. If the other side is higher, | |
279 | * communication is not possible. Only major version equal can talk to each | |
280 | * other. If the minor version differs, the lowest version is used by both | |
281 | * sides. | |
092b6259 | 282 | */ |
6151a90f | 283 | if (msg.major != rsock->major) { |
d4519fa3 JD |
284 | /* Not compatible */ |
285 | ret = -1; | |
286 | DBG2("Relayd version is NOT compatible. Relayd version %u != %u (us)", | |
6151a90f | 287 | msg.major, rsock->major); |
092b6259 | 288 | goto error; |
00e2e675 DG |
289 | } |
290 | ||
092b6259 | 291 | /* |
6151a90f JD |
292 | * If the relayd's minor version is higher, it will adapt to our version so |
293 | * we can continue to use the latest relayd communication data structure. | |
294 | * If the received minor version is higher, the relayd should adapt to us. | |
092b6259 | 295 | */ |
6151a90f JD |
296 | if (rsock->minor > msg.minor) { |
297 | rsock->minor = msg.minor; | |
d4519fa3 | 298 | } |
092b6259 | 299 | |
d4519fa3 JD |
300 | /* Version number compatible */ |
301 | DBG2("Relayd version is compatible, using protocol version %u.%u", | |
6151a90f | 302 | rsock->major, rsock->minor); |
d4519fa3 | 303 | ret = 0; |
00e2e675 DG |
304 | |
305 | error: | |
306 | return ret; | |
307 | } | |
308 | ||
00e2e675 DG |
309 | /* |
310 | * Add stream on the relayd and assign stream handle to the stream_id argument. | |
311 | * | |
312 | * On success return 0 else return ret_code negative value. | |
313 | */ | |
6151a90f | 314 | int relayd_send_metadata(struct lttcomm_relayd_sock *rsock, size_t len) |
00e2e675 DG |
315 | { |
316 | int ret; | |
317 | ||
318 | /* Code flow error. Safety net. */ | |
6151a90f | 319 | assert(rsock); |
00e2e675 | 320 | |
77c7c900 | 321 | DBG("Relayd sending metadata of size %zu", len); |
00e2e675 DG |
322 | |
323 | /* Send command */ | |
6151a90f | 324 | ret = send_command(rsock, RELAYD_SEND_METADATA, NULL, len, 0); |
00e2e675 DG |
325 | if (ret < 0) { |
326 | goto error; | |
327 | } | |
328 | ||
329 | DBG2("Relayd metadata added successfully"); | |
330 | ||
331 | /* | |
332 | * After that call, the metadata data MUST be sent to the relayd so the | |
333 | * receive size on the other end matches the len of the metadata packet | |
633d0084 | 334 | * header. This is why we don't wait for a reply here. |
00e2e675 DG |
335 | */ |
336 | ||
337 | error: | |
338 | return ret; | |
339 | } | |
340 | ||
341 | /* | |
6151a90f | 342 | * Connect to relay daemon with an allocated lttcomm_relayd_sock. |
00e2e675 | 343 | */ |
6151a90f | 344 | int relayd_connect(struct lttcomm_relayd_sock *rsock) |
00e2e675 DG |
345 | { |
346 | /* Code flow error. Safety net. */ | |
6151a90f | 347 | assert(rsock); |
00e2e675 | 348 | |
f96e4545 MD |
349 | if (!rsock->sock.ops) { |
350 | /* | |
351 | * Attempting a connect on a non-initialized socket. | |
352 | */ | |
353 | return -ECONNRESET; | |
354 | } | |
355 | ||
00e2e675 DG |
356 | DBG3("Relayd connect ..."); |
357 | ||
6151a90f | 358 | return rsock->sock.ops->connect(&rsock->sock); |
00e2e675 DG |
359 | } |
360 | ||
361 | /* | |
6151a90f | 362 | * Close relayd socket with an allocated lttcomm_relayd_sock. |
ffe60014 DG |
363 | * |
364 | * If no socket operations are found, simply return 0 meaning that everything | |
365 | * is fine. Without operations, the socket can not possibly be opened or used. | |
366 | * This is possible if the socket was allocated but not created. However, the | |
367 | * caller could simply use it to store a valid file descriptor for instance | |
368 | * passed over a Unix socket and call this to cleanup but still without a valid | |
369 | * ops pointer. | |
370 | * | |
371 | * Return the close returned value. On error, a negative value is usually | |
372 | * returned back from close(2). | |
00e2e675 | 373 | */ |
6151a90f | 374 | int relayd_close(struct lttcomm_relayd_sock *rsock) |
00e2e675 | 375 | { |
ffe60014 DG |
376 | int ret; |
377 | ||
00e2e675 | 378 | /* Code flow error. Safety net. */ |
6151a90f | 379 | assert(rsock); |
00e2e675 | 380 | |
ffe60014 | 381 | /* An invalid fd is fine, return success. */ |
6151a90f | 382 | if (rsock->sock.fd < 0) { |
ffe60014 DG |
383 | ret = 0; |
384 | goto end; | |
385 | } | |
386 | ||
6151a90f | 387 | DBG3("Relayd closing socket %d", rsock->sock.fd); |
00e2e675 | 388 | |
6151a90f JD |
389 | if (rsock->sock.ops) { |
390 | ret = rsock->sock.ops->close(&rsock->sock); | |
ffe60014 DG |
391 | } else { |
392 | /* Default call if no specific ops found. */ | |
6151a90f | 393 | ret = close(rsock->sock.fd); |
ffe60014 DG |
394 | if (ret < 0) { |
395 | PERROR("relayd_close default close"); | |
396 | } | |
397 | } | |
f96e4545 | 398 | rsock->sock.fd = -1; |
ffe60014 DG |
399 | |
400 | end: | |
401 | return ret; | |
00e2e675 DG |
402 | } |
403 | ||
404 | /* | |
405 | * Send data header structure to the relayd. | |
406 | */ | |
6151a90f | 407 | int relayd_send_data_hdr(struct lttcomm_relayd_sock *rsock, |
00e2e675 DG |
408 | struct lttcomm_relayd_data_hdr *hdr, size_t size) |
409 | { | |
410 | int ret; | |
411 | ||
412 | /* Code flow error. Safety net. */ | |
6151a90f | 413 | assert(rsock); |
00e2e675 DG |
414 | assert(hdr); |
415 | ||
f96e4545 MD |
416 | if (rsock->sock.fd < 0) { |
417 | return -ECONNRESET; | |
418 | } | |
419 | ||
8fd623e0 | 420 | DBG3("Relayd sending data header of size %zu", size); |
00e2e675 DG |
421 | |
422 | /* Again, safety net */ | |
423 | if (size == 0) { | |
424 | size = sizeof(struct lttcomm_relayd_data_hdr); | |
425 | } | |
426 | ||
427 | /* Only send data header. */ | |
6151a90f | 428 | ret = rsock->sock.ops->sendmsg(&rsock->sock, hdr, size, 0); |
00e2e675 | 429 | if (ret < 0) { |
8994307f | 430 | ret = -errno; |
00e2e675 DG |
431 | goto error; |
432 | } | |
433 | ||
434 | /* | |
435 | * The data MUST be sent right after that command for the receive on the | |
436 | * other end to match the size in the header. | |
437 | */ | |
438 | ||
439 | error: | |
440 | return ret; | |
441 | } | |
173af62f DG |
442 | |
443 | /* | |
444 | * Send close stream command to the relayd. | |
445 | */ | |
6151a90f | 446 | int relayd_send_close_stream(struct lttcomm_relayd_sock *rsock, uint64_t stream_id, |
173af62f DG |
447 | uint64_t last_net_seq_num) |
448 | { | |
449 | int ret; | |
450 | struct lttcomm_relayd_close_stream msg; | |
451 | struct lttcomm_relayd_generic_reply reply; | |
452 | ||
453 | /* Code flow error. Safety net. */ | |
6151a90f | 454 | assert(rsock); |
173af62f | 455 | |
77c7c900 | 456 | DBG("Relayd closing stream id %" PRIu64, stream_id); |
173af62f DG |
457 | |
458 | msg.stream_id = htobe64(stream_id); | |
459 | msg.last_net_seq_num = htobe64(last_net_seq_num); | |
460 | ||
461 | /* Send command */ | |
6151a90f | 462 | ret = send_command(rsock, RELAYD_CLOSE_STREAM, (void *) &msg, sizeof(msg), 0); |
173af62f DG |
463 | if (ret < 0) { |
464 | goto error; | |
465 | } | |
466 | ||
20275fe8 | 467 | /* Receive response */ |
6151a90f | 468 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
173af62f DG |
469 | if (ret < 0) { |
470 | goto error; | |
471 | } | |
472 | ||
473 | reply.ret_code = be32toh(reply.ret_code); | |
474 | ||
475 | /* Return session id or negative ret code. */ | |
f73fabfd | 476 | if (reply.ret_code != LTTNG_OK) { |
bb63afd9 DG |
477 | ret = -1; |
478 | ERR("Relayd close stream replied error %d", reply.ret_code); | |
173af62f DG |
479 | } else { |
480 | /* Success */ | |
481 | ret = 0; | |
482 | } | |
483 | ||
77c7c900 | 484 | DBG("Relayd close stream id %" PRIu64 " successfully", stream_id); |
173af62f DG |
485 | |
486 | error: | |
487 | return ret; | |
488 | } | |
c8f59ee5 DG |
489 | |
490 | /* | |
491 | * Check for data availability for a given stream id. | |
492 | * | |
6d805429 | 493 | * Return 0 if NOT pending, 1 if so and a negative value on error. |
c8f59ee5 | 494 | */ |
6151a90f | 495 | int relayd_data_pending(struct lttcomm_relayd_sock *rsock, uint64_t stream_id, |
c8f59ee5 DG |
496 | uint64_t last_net_seq_num) |
497 | { | |
498 | int ret; | |
6d805429 | 499 | struct lttcomm_relayd_data_pending msg; |
c8f59ee5 DG |
500 | struct lttcomm_relayd_generic_reply reply; |
501 | ||
502 | /* Code flow error. Safety net. */ | |
6151a90f | 503 | assert(rsock); |
c8f59ee5 | 504 | |
6d805429 | 505 | DBG("Relayd data pending for stream id %" PRIu64, stream_id); |
c8f59ee5 DG |
506 | |
507 | msg.stream_id = htobe64(stream_id); | |
508 | msg.last_net_seq_num = htobe64(last_net_seq_num); | |
509 | ||
510 | /* Send command */ | |
6151a90f | 511 | ret = send_command(rsock, RELAYD_DATA_PENDING, (void *) &msg, |
c8f59ee5 DG |
512 | sizeof(msg), 0); |
513 | if (ret < 0) { | |
514 | goto error; | |
515 | } | |
516 | ||
20275fe8 | 517 | /* Receive response */ |
6151a90f | 518 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
c8f59ee5 DG |
519 | if (ret < 0) { |
520 | goto error; | |
521 | } | |
522 | ||
523 | reply.ret_code = be32toh(reply.ret_code); | |
524 | ||
525 | /* Return session id or negative ret code. */ | |
526 | if (reply.ret_code >= LTTNG_OK) { | |
bb63afd9 | 527 | ERR("Relayd data pending replied error %d", reply.ret_code); |
c8f59ee5 DG |
528 | } |
529 | ||
530 | /* At this point, the ret code is either 1 or 0 */ | |
531 | ret = reply.ret_code; | |
532 | ||
6d805429 | 533 | DBG("Relayd data is %s pending for stream id %" PRIu64, |
9dd26bb9 | 534 | ret == 1 ? "" : "NOT", stream_id); |
c8f59ee5 DG |
535 | |
536 | error: | |
537 | return ret; | |
538 | } | |
539 | ||
540 | /* | |
541 | * Check on the relayd side for a quiescent state on the control socket. | |
542 | */ | |
6151a90f | 543 | int relayd_quiescent_control(struct lttcomm_relayd_sock *rsock, |
ad7051c0 | 544 | uint64_t metadata_stream_id) |
c8f59ee5 DG |
545 | { |
546 | int ret; | |
ad7051c0 | 547 | struct lttcomm_relayd_quiescent_control msg; |
c8f59ee5 DG |
548 | struct lttcomm_relayd_generic_reply reply; |
549 | ||
550 | /* Code flow error. Safety net. */ | |
6151a90f | 551 | assert(rsock); |
c8f59ee5 DG |
552 | |
553 | DBG("Relayd checking quiescent control state"); | |
554 | ||
ad7051c0 DG |
555 | msg.stream_id = htobe64(metadata_stream_id); |
556 | ||
c8f59ee5 | 557 | /* Send command */ |
6151a90f | 558 | ret = send_command(rsock, RELAYD_QUIESCENT_CONTROL, &msg, sizeof(msg), 0); |
c8f59ee5 DG |
559 | if (ret < 0) { |
560 | goto error; | |
561 | } | |
562 | ||
20275fe8 | 563 | /* Receive response */ |
6151a90f | 564 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
c8f59ee5 DG |
565 | if (ret < 0) { |
566 | goto error; | |
567 | } | |
568 | ||
569 | reply.ret_code = be32toh(reply.ret_code); | |
570 | ||
571 | /* Return session id or negative ret code. */ | |
572 | if (reply.ret_code != LTTNG_OK) { | |
bb63afd9 DG |
573 | ret = -1; |
574 | ERR("Relayd quiescent control replied error %d", reply.ret_code); | |
c8f59ee5 DG |
575 | goto error; |
576 | } | |
577 | ||
578 | /* Control socket is quiescent */ | |
6d805429 | 579 | return 0; |
c8f59ee5 DG |
580 | |
581 | error: | |
582 | return ret; | |
583 | } | |
f7079f67 DG |
584 | |
585 | /* | |
586 | * Begin a data pending command for a specific session id. | |
587 | */ | |
6151a90f | 588 | int relayd_begin_data_pending(struct lttcomm_relayd_sock *rsock, uint64_t id) |
f7079f67 DG |
589 | { |
590 | int ret; | |
591 | struct lttcomm_relayd_begin_data_pending msg; | |
592 | struct lttcomm_relayd_generic_reply reply; | |
593 | ||
594 | /* Code flow error. Safety net. */ | |
6151a90f | 595 | assert(rsock); |
f7079f67 DG |
596 | |
597 | DBG("Relayd begin data pending"); | |
598 | ||
599 | msg.session_id = htobe64(id); | |
600 | ||
601 | /* Send command */ | |
6151a90f | 602 | ret = send_command(rsock, RELAYD_BEGIN_DATA_PENDING, &msg, sizeof(msg), 0); |
f7079f67 DG |
603 | if (ret < 0) { |
604 | goto error; | |
605 | } | |
606 | ||
20275fe8 | 607 | /* Receive response */ |
6151a90f | 608 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
f7079f67 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. */ | |
616 | if (reply.ret_code != LTTNG_OK) { | |
bb63afd9 DG |
617 | ret = -1; |
618 | ERR("Relayd begin data pending replied error %d", reply.ret_code); | |
f7079f67 DG |
619 | goto error; |
620 | } | |
621 | ||
622 | return 0; | |
623 | ||
624 | error: | |
625 | return ret; | |
626 | } | |
627 | ||
628 | /* | |
629 | * End a data pending command for a specific session id. | |
630 | * | |
631 | * Return 0 on success and set is_data_inflight to 0 if no data is being | |
632 | * streamed or 1 if it is the case. | |
633 | */ | |
6151a90f | 634 | int relayd_end_data_pending(struct lttcomm_relayd_sock *rsock, uint64_t id, |
f7079f67 DG |
635 | unsigned int *is_data_inflight) |
636 | { | |
637 | int ret; | |
638 | struct lttcomm_relayd_end_data_pending msg; | |
639 | struct lttcomm_relayd_generic_reply reply; | |
640 | ||
641 | /* Code flow error. Safety net. */ | |
6151a90f | 642 | assert(rsock); |
f7079f67 DG |
643 | |
644 | DBG("Relayd end data pending"); | |
645 | ||
646 | msg.session_id = htobe64(id); | |
647 | ||
648 | /* Send command */ | |
6151a90f | 649 | ret = send_command(rsock, RELAYD_END_DATA_PENDING, &msg, sizeof(msg), 0); |
f7079f67 DG |
650 | if (ret < 0) { |
651 | goto error; | |
652 | } | |
653 | ||
20275fe8 | 654 | /* Receive response */ |
6151a90f | 655 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
f7079f67 DG |
656 | if (ret < 0) { |
657 | goto error; | |
658 | } | |
659 | ||
660 | reply.ret_code = be32toh(reply.ret_code); | |
661 | if (reply.ret_code < 0) { | |
662 | ret = reply.ret_code; | |
663 | goto error; | |
664 | } | |
665 | ||
666 | *is_data_inflight = reply.ret_code; | |
667 | ||
668 | DBG("Relayd end data pending is data inflight: %d", reply.ret_code); | |
669 | ||
670 | return 0; | |
671 | ||
672 | error: | |
673 | return ret; | |
674 | } | |
1c20f0e2 JD |
675 | |
676 | /* | |
677 | * Send index to the relayd. | |
678 | */ | |
679 | int relayd_send_index(struct lttcomm_relayd_sock *rsock, | |
680 | struct lttng_packet_index *index, uint64_t relay_stream_id, | |
681 | uint64_t net_seq_num) | |
682 | { | |
683 | int ret; | |
684 | struct lttcomm_relayd_index msg; | |
685 | struct lttcomm_relayd_generic_reply reply; | |
686 | ||
687 | /* Code flow error. Safety net. */ | |
688 | assert(rsock); | |
689 | ||
690 | if (rsock->minor < 4) { | |
691 | DBG("Not sending indexes before protocol 2.4"); | |
692 | ret = 0; | |
693 | goto error; | |
694 | } | |
695 | ||
696 | DBG("Relayd sending index for stream ID %" PRIu64, relay_stream_id); | |
697 | ||
698 | msg.relay_stream_id = htobe64(relay_stream_id); | |
699 | msg.net_seq_num = htobe64(net_seq_num); | |
700 | ||
701 | /* The index is already in big endian. */ | |
702 | msg.packet_size = index->packet_size; | |
703 | msg.content_size = index->content_size; | |
704 | msg.timestamp_begin = index->timestamp_begin; | |
705 | msg.timestamp_end = index->timestamp_end; | |
706 | msg.events_discarded = index->events_discarded; | |
707 | msg.stream_id = index->stream_id; | |
708 | ||
709 | /* Send command */ | |
710 | ret = send_command(rsock, RELAYD_SEND_INDEX, &msg, sizeof(msg), 0); | |
711 | if (ret < 0) { | |
712 | goto error; | |
713 | } | |
714 | ||
715 | /* Receive response */ | |
716 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); | |
717 | if (ret < 0) { | |
718 | goto error; | |
719 | } | |
720 | ||
721 | reply.ret_code = be32toh(reply.ret_code); | |
722 | ||
723 | /* Return session id or negative ret code. */ | |
724 | if (reply.ret_code != LTTNG_OK) { | |
725 | ret = -1; | |
726 | ERR("Relayd send index replied error %d", reply.ret_code); | |
727 | } else { | |
728 | /* Success */ | |
729 | ret = 0; | |
730 | } | |
731 | ||
732 | error: | |
733 | return ret; | |
734 | } |