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> |
27283937 | 29 | #include <common/compat/string.h> |
00e2e675 | 30 | #include <common/sessiond-comm/relayd.h> |
50adc264 | 31 | #include <common/index/ctf-index.h> |
d2956687 | 32 | #include <common/trace-chunk.h> |
00e2e675 DG |
33 | |
34 | #include "relayd.h" | |
35 | ||
36 | /* | |
37 | * Send command. Fill up the header and append the data. | |
38 | */ | |
6151a90f | 39 | static int send_command(struct lttcomm_relayd_sock *rsock, |
76b9afaa | 40 | enum lttcomm_relayd_command cmd, const void *data, size_t size, |
00e2e675 DG |
41 | int flags) |
42 | { | |
43 | int ret; | |
44 | struct lttcomm_relayd_hdr header; | |
45 | char *buf; | |
46 | uint64_t buf_size = sizeof(header); | |
47 | ||
f96e4545 MD |
48 | if (rsock->sock.fd < 0) { |
49 | return -ECONNRESET; | |
50 | } | |
51 | ||
00e2e675 DG |
52 | if (data) { |
53 | buf_size += size; | |
54 | } | |
55 | ||
56 | buf = zmalloc(buf_size); | |
57 | if (buf == NULL) { | |
58 | PERROR("zmalloc relayd send command buf"); | |
59 | ret = -1; | |
60 | goto alloc_error; | |
61 | } | |
62 | ||
53efb85a | 63 | memset(&header, 0, sizeof(header)); |
00e2e675 DG |
64 | header.cmd = htobe32(cmd); |
65 | header.data_size = htobe64(size); | |
66 | ||
67 | /* Zeroed for now since not used. */ | |
68 | header.cmd_version = 0; | |
69 | header.circuit_id = 0; | |
70 | ||
71 | /* Prepare buffer to send. */ | |
72 | memcpy(buf, &header, sizeof(header)); | |
73 | if (data) { | |
74 | memcpy(buf + sizeof(header), data, size); | |
75 | } | |
76 | ||
06586bbe | 77 | DBG3("Relayd sending command %d of size %" PRIu64, (int) cmd, buf_size); |
6151a90f | 78 | ret = rsock->sock.ops->sendmsg(&rsock->sock, buf, buf_size, flags); |
00e2e675 | 79 | if (ret < 0) { |
06586bbe JG |
80 | PERROR("Failed to send command %d of size %" PRIu64, |
81 | (int) cmd, buf_size); | |
8994307f | 82 | ret = -errno; |
00e2e675 DG |
83 | goto error; |
84 | } | |
00e2e675 DG |
85 | error: |
86 | free(buf); | |
87 | alloc_error: | |
88 | return ret; | |
89 | } | |
90 | ||
91 | /* | |
92 | * Receive reply data on socket. This MUST be call after send_command or else | |
93 | * could result in unexpected behavior(s). | |
94 | */ | |
6151a90f | 95 | static int recv_reply(struct lttcomm_relayd_sock *rsock, void *data, size_t size) |
00e2e675 DG |
96 | { |
97 | int ret; | |
98 | ||
f96e4545 MD |
99 | if (rsock->sock.fd < 0) { |
100 | return -ECONNRESET; | |
101 | } | |
102 | ||
8fd623e0 | 103 | DBG3("Relayd waiting for reply of size %zu", size); |
00e2e675 | 104 | |
6151a90f | 105 | ret = rsock->sock.ops->recvmsg(&rsock->sock, data, size, 0); |
20275fe8 DG |
106 | if (ret <= 0 || ret != size) { |
107 | if (ret == 0) { | |
108 | /* Orderly shutdown. */ | |
6151a90f | 109 | DBG("Socket %d has performed an orderly shutdown", rsock->sock.fd); |
20275fe8 | 110 | } else { |
8fd623e0 | 111 | DBG("Receiving reply failed on sock %d for size %zu with ret %d", |
6151a90f | 112 | rsock->sock.fd, size, ret); |
20275fe8 DG |
113 | } |
114 | /* Always return -1 here and the caller can use errno. */ | |
115 | ret = -1; | |
00e2e675 DG |
116 | goto error; |
117 | } | |
118 | ||
119 | error: | |
120 | return ret; | |
121 | } | |
122 | ||
d3e2ba59 | 123 | /* |
f86f6389 JR |
124 | * Starting from 2.11, RELAYD_CREATE_SESSION payload (session_name & hostname) |
125 | * have no length restriction on the sender side. | |
126 | * Length for both payloads is stored in the msg struct. A new dynamic size | |
127 | * payload size is introduced. | |
128 | */ | |
129 | static int relayd_create_session_2_11(struct lttcomm_relayd_sock *rsock, | |
fb9a95c4 | 130 | const char *session_name, const char *hostname, |
658f12fa | 131 | int session_live_timer, unsigned int snapshot, |
f39bd140 JG |
132 | uint64_t sessiond_session_id, const lttng_uuid sessiond_uuid, |
133 | const uint64_t *current_chunk_id) | |
f86f6389 JR |
134 | { |
135 | int ret; | |
136 | struct lttcomm_relayd_create_session_2_11 *msg = NULL; | |
137 | size_t session_name_len; | |
138 | size_t hostname_len; | |
139 | size_t msg_length; | |
140 | ||
141 | /* The two names are sent with a '\0' delimiter between them. */ | |
142 | session_name_len = strlen(session_name) + 1; | |
143 | hostname_len = strlen(hostname) + 1; | |
144 | ||
145 | msg_length = sizeof(*msg) + session_name_len + hostname_len; | |
146 | msg = zmalloc(msg_length); | |
147 | if (!msg) { | |
148 | PERROR("zmalloc create_session_2_11 command message"); | |
149 | ret = -1; | |
150 | goto error; | |
151 | } | |
152 | ||
153 | assert(session_name_len <= UINT32_MAX); | |
154 | msg->session_name_len = htobe32(session_name_len); | |
155 | ||
156 | assert(hostname_len <= UINT32_MAX); | |
157 | msg->hostname_len = htobe32(hostname_len); | |
158 | ||
159 | if (lttng_strncpy(msg->names, session_name, session_name_len)) { | |
160 | ret = -1; | |
161 | goto error; | |
162 | } | |
163 | if (lttng_strncpy(msg->names + session_name_len, hostname, hostname_len)) { | |
164 | ret = -1; | |
165 | goto error; | |
166 | } | |
167 | ||
168 | msg->live_timer = htobe32(session_live_timer); | |
169 | msg->snapshot = !!snapshot; | |
170 | ||
658f12fa JG |
171 | lttng_uuid_copy(msg->sessiond_uuid, sessiond_uuid); |
172 | msg->session_id = htobe64(sessiond_session_id); | |
173 | ||
f39bd140 JG |
174 | if (current_chunk_id) { |
175 | LTTNG_OPTIONAL_SET(&msg->current_chunk_id, | |
176 | htobe64(*current_chunk_id)); | |
177 | } | |
178 | ||
f86f6389 JR |
179 | /* Send command */ |
180 | ret = send_command(rsock, RELAYD_CREATE_SESSION, msg, msg_length, 0); | |
181 | if (ret < 0) { | |
182 | goto error; | |
183 | } | |
184 | error: | |
185 | free(msg); | |
186 | return ret; | |
187 | } | |
188 | /* | |
189 | * From 2.4 to 2.10, RELAYD_CREATE_SESSION takes additional parameters to | |
d3e2ba59 JD |
190 | * support the live reading capability. |
191 | */ | |
192 | static int relayd_create_session_2_4(struct lttcomm_relayd_sock *rsock, | |
fb9a95c4 JG |
193 | const char *session_name, const char *hostname, |
194 | int session_live_timer, unsigned int snapshot) | |
d3e2ba59 JD |
195 | { |
196 | int ret; | |
197 | struct lttcomm_relayd_create_session_2_4 msg; | |
198 | ||
3a13ffd5 MD |
199 | if (lttng_strncpy(msg.session_name, session_name, |
200 | sizeof(msg.session_name))) { | |
246777db MD |
201 | ret = -1; |
202 | goto error; | |
203 | } | |
3a13ffd5 | 204 | if (lttng_strncpy(msg.hostname, hostname, sizeof(msg.hostname))) { |
246777db MD |
205 | ret = -1; |
206 | goto error; | |
207 | } | |
d3e2ba59 | 208 | msg.live_timer = htobe32(session_live_timer); |
7d2f7452 | 209 | msg.snapshot = htobe32(snapshot); |
d3e2ba59 JD |
210 | |
211 | /* Send command */ | |
212 | ret = send_command(rsock, RELAYD_CREATE_SESSION, &msg, sizeof(msg), 0); | |
213 | if (ret < 0) { | |
214 | goto error; | |
215 | } | |
216 | ||
217 | error: | |
218 | return ret; | |
219 | } | |
220 | ||
221 | /* | |
222 | * RELAYD_CREATE_SESSION from 2.1 to 2.3. | |
223 | */ | |
42e9a27b | 224 | static int relayd_create_session_2_1(struct lttcomm_relayd_sock *rsock) |
d3e2ba59 JD |
225 | { |
226 | int ret; | |
227 | ||
228 | /* Send command */ | |
229 | ret = send_command(rsock, RELAYD_CREATE_SESSION, NULL, 0, 0); | |
230 | if (ret < 0) { | |
231 | goto error; | |
232 | } | |
233 | ||
234 | error: | |
235 | return ret; | |
236 | } | |
237 | ||
c5b6f4f0 DG |
238 | /* |
239 | * Send a RELAYD_CREATE_SESSION command to the relayd with the given socket and | |
240 | * set session_id of the relayd if we have a successful reply from the relayd. | |
241 | * | |
20275fe8 DG |
242 | * On success, return 0 else a negative value which is either an errno error or |
243 | * a lttng error code from the relayd. | |
c5b6f4f0 | 244 | */ |
fb9a95c4 JG |
245 | int relayd_create_session(struct lttcomm_relayd_sock *rsock, |
246 | uint64_t *relayd_session_id, | |
247 | const char *session_name, const char *hostname, | |
248 | int session_live_timer, | |
658f12fa | 249 | unsigned int snapshot, uint64_t sessiond_session_id, |
f39bd140 JG |
250 | const lttng_uuid sessiond_uuid, |
251 | const uint64_t *current_chunk_id) | |
c5b6f4f0 DG |
252 | { |
253 | int ret; | |
254 | struct lttcomm_relayd_status_session reply; | |
255 | ||
6151a90f | 256 | assert(rsock); |
658f12fa | 257 | assert(relayd_session_id); |
c5b6f4f0 DG |
258 | |
259 | DBG("Relayd create session"); | |
260 | ||
f86f6389 JR |
261 | if (rsock->minor < 4) { |
262 | /* From 2.1 to 2.3 */ | |
263 | ret = relayd_create_session_2_1(rsock); | |
264 | } else if (rsock->minor >= 4 && rsock->minor < 11) { | |
265 | /* From 2.4 to 2.10 */ | |
266 | ret = relayd_create_session_2_4(rsock, session_name, | |
267 | hostname, session_live_timer, snapshot); | |
268 | } else { | |
269 | /* From 2.11 to ... */ | |
270 | ret = relayd_create_session_2_11(rsock, session_name, | |
658f12fa | 271 | hostname, session_live_timer, snapshot, |
f39bd140 JG |
272 | sessiond_session_id, sessiond_uuid, |
273 | current_chunk_id); | |
d3e2ba59 JD |
274 | } |
275 | ||
c5b6f4f0 DG |
276 | if (ret < 0) { |
277 | goto error; | |
278 | } | |
279 | ||
20275fe8 | 280 | /* Receive response */ |
6151a90f | 281 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
c5b6f4f0 DG |
282 | if (ret < 0) { |
283 | goto error; | |
284 | } | |
285 | ||
286 | reply.session_id = be64toh(reply.session_id); | |
287 | reply.ret_code = be32toh(reply.ret_code); | |
288 | ||
289 | /* Return session id or negative ret code. */ | |
290 | if (reply.ret_code != LTTNG_OK) { | |
bb63afd9 DG |
291 | ret = -1; |
292 | ERR("Relayd create session replied error %d", reply.ret_code); | |
c5b6f4f0 DG |
293 | goto error; |
294 | } else { | |
295 | ret = 0; | |
658f12fa | 296 | *relayd_session_id = reply.session_id; |
c5b6f4f0 DG |
297 | } |
298 | ||
299 | DBG("Relayd session created with id %" PRIu64, reply.session_id); | |
300 | ||
301 | error: | |
302 | return ret; | |
303 | } | |
304 | ||
2f21a469 JR |
305 | static int relayd_add_stream_2_1(struct lttcomm_relayd_sock *rsock, |
306 | const char *channel_name, const char *pathname) | |
307 | { | |
308 | int ret; | |
309 | struct lttcomm_relayd_add_stream msg; | |
310 | ||
311 | memset(&msg, 0, sizeof(msg)); | |
312 | if (lttng_strncpy(msg.channel_name, channel_name, | |
313 | sizeof(msg.channel_name))) { | |
314 | ret = -1; | |
315 | goto error; | |
316 | } | |
317 | ||
318 | if (lttng_strncpy(msg.pathname, pathname, | |
319 | sizeof(msg.pathname))) { | |
320 | ret = -1; | |
321 | goto error; | |
322 | } | |
323 | ||
324 | /* Send command */ | |
325 | ret = send_command(rsock, RELAYD_ADD_STREAM, (void *) &msg, sizeof(msg), 0); | |
326 | if (ret < 0) { | |
327 | ret = -1; | |
328 | goto error; | |
329 | } | |
330 | ret = 0; | |
331 | error: | |
332 | return ret; | |
333 | } | |
334 | ||
335 | static int relayd_add_stream_2_2(struct lttcomm_relayd_sock *rsock, | |
336 | const char *channel_name, const char *pathname, | |
337 | uint64_t tracefile_size, uint64_t tracefile_count) | |
338 | { | |
339 | int ret; | |
340 | struct lttcomm_relayd_add_stream_2_2 msg; | |
341 | ||
342 | memset(&msg, 0, sizeof(msg)); | |
343 | /* Compat with relayd 2.2 to 2.10 */ | |
344 | if (lttng_strncpy(msg.channel_name, channel_name, | |
345 | sizeof(msg.channel_name))) { | |
346 | ret = -1; | |
347 | goto error; | |
348 | } | |
349 | if (lttng_strncpy(msg.pathname, pathname, | |
350 | sizeof(msg.pathname))) { | |
351 | ret = -1; | |
352 | goto error; | |
353 | } | |
354 | msg.tracefile_size = htobe64(tracefile_size); | |
355 | msg.tracefile_count = htobe64(tracefile_count); | |
356 | ||
357 | /* Send command */ | |
358 | ret = send_command(rsock, RELAYD_ADD_STREAM, (void *) &msg, sizeof(msg), 0); | |
359 | if (ret < 0) { | |
360 | goto error; | |
361 | } | |
362 | ret = 0; | |
363 | error: | |
364 | return ret; | |
365 | } | |
366 | ||
367 | static int relayd_add_stream_2_11(struct lttcomm_relayd_sock *rsock, | |
368 | const char *channel_name, const char *pathname, | |
b00e554e JG |
369 | uint64_t tracefile_size, uint64_t tracefile_count, |
370 | uint64_t trace_archive_id) | |
2f21a469 JR |
371 | { |
372 | int ret; | |
373 | struct lttcomm_relayd_add_stream_2_11 *msg = NULL; | |
374 | size_t channel_name_len; | |
375 | size_t pathname_len; | |
376 | size_t msg_length; | |
377 | ||
378 | /* The two names are sent with a '\0' delimiter between them. */ | |
379 | channel_name_len = strlen(channel_name) + 1; | |
380 | pathname_len = strlen(pathname) + 1; | |
381 | ||
382 | msg_length = sizeof(*msg) + channel_name_len + pathname_len; | |
383 | msg = zmalloc(msg_length); | |
384 | if (!msg) { | |
385 | PERROR("zmalloc add_stream_2_11 command message"); | |
386 | ret = -1; | |
387 | goto error; | |
388 | } | |
389 | ||
390 | assert(channel_name_len <= UINT32_MAX); | |
391 | msg->channel_name_len = htobe32(channel_name_len); | |
392 | ||
393 | assert(pathname_len <= UINT32_MAX); | |
394 | msg->pathname_len = htobe32(pathname_len); | |
395 | ||
396 | if (lttng_strncpy(msg->names, channel_name, channel_name_len)) { | |
397 | ret = -1; | |
398 | goto error; | |
399 | } | |
400 | if (lttng_strncpy(msg->names + channel_name_len, pathname, pathname_len)) { | |
401 | ret = -1; | |
402 | goto error; | |
403 | } | |
404 | ||
405 | msg->tracefile_size = htobe64(tracefile_size); | |
406 | msg->tracefile_count = htobe64(tracefile_count); | |
b00e554e | 407 | msg->trace_archive_id = htobe64(trace_archive_id); |
2f21a469 JR |
408 | |
409 | /* Send command */ | |
410 | ret = send_command(rsock, RELAYD_ADD_STREAM, (void *) msg, msg_length, 0); | |
411 | if (ret < 0) { | |
412 | goto error; | |
413 | } | |
414 | ret = 0; | |
415 | error: | |
416 | free(msg); | |
417 | return ret; | |
418 | } | |
419 | ||
00e2e675 DG |
420 | /* |
421 | * Add stream on the relayd and assign stream handle to the stream_id argument. | |
422 | * | |
423 | * On success return 0 else return ret_code negative value. | |
424 | */ | |
6151a90f | 425 | int relayd_add_stream(struct lttcomm_relayd_sock *rsock, const char *channel_name, |
0f907de1 | 426 | const char *pathname, uint64_t *stream_id, |
0b50e4b3 | 427 | uint64_t tracefile_size, uint64_t tracefile_count, |
d2956687 | 428 | struct lttng_trace_chunk *trace_chunk) |
00e2e675 DG |
429 | { |
430 | int ret; | |
00e2e675 DG |
431 | struct lttcomm_relayd_status_stream reply; |
432 | ||
433 | /* Code flow error. Safety net. */ | |
6151a90f | 434 | assert(rsock); |
00e2e675 DG |
435 | assert(channel_name); |
436 | assert(pathname); | |
437 | ||
438 | DBG("Relayd adding stream for channel name %s", channel_name); | |
439 | ||
0f907de1 JD |
440 | /* Compat with relayd 2.1 */ |
441 | if (rsock->minor == 1) { | |
2f21a469 | 442 | /* For 2.1 */ |
d2956687 | 443 | assert(!trace_chunk); |
2f21a469 JR |
444 | ret = relayd_add_stream_2_1(rsock, channel_name, pathname); |
445 | ||
446 | } else if (rsock->minor > 1 && rsock->minor < 11) { | |
447 | /* From 2.2 to 2.10 */ | |
d2956687 | 448 | assert(!trace_chunk); |
2f21a469 JR |
449 | ret = relayd_add_stream_2_2(rsock, channel_name, pathname, |
450 | tracefile_size, tracefile_count); | |
0f907de1 | 451 | } else { |
d2956687 JG |
452 | enum lttng_trace_chunk_status chunk_status; |
453 | uint64_t chunk_id; | |
454 | ||
455 | assert(trace_chunk); | |
456 | chunk_status = lttng_trace_chunk_get_id(trace_chunk, | |
457 | &chunk_id); | |
458 | assert(chunk_status == LTTNG_TRACE_CHUNK_STATUS_OK); | |
459 | ||
2f21a469 JR |
460 | /* From 2.11 to ...*/ |
461 | ret = relayd_add_stream_2_11(rsock, channel_name, pathname, | |
b00e554e | 462 | tracefile_size, tracefile_count, |
d2956687 | 463 | chunk_id); |
2f21a469 | 464 | } |
0f907de1 | 465 | |
2f21a469 JR |
466 | if (ret) { |
467 | ret = -1; | |
468 | goto error; | |
00e2e675 DG |
469 | } |
470 | ||
633d0084 | 471 | /* Waiting for reply */ |
6151a90f | 472 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
00e2e675 DG |
473 | if (ret < 0) { |
474 | goto error; | |
475 | } | |
476 | ||
477 | /* Back to host bytes order. */ | |
478 | reply.handle = be64toh(reply.handle); | |
479 | reply.ret_code = be32toh(reply.ret_code); | |
480 | ||
481 | /* Return session id or negative ret code. */ | |
f73fabfd | 482 | if (reply.ret_code != LTTNG_OK) { |
bb63afd9 DG |
483 | ret = -1; |
484 | ERR("Relayd add stream replied error %d", reply.ret_code); | |
00e2e675 DG |
485 | } else { |
486 | /* Success */ | |
487 | ret = 0; | |
488 | *stream_id = reply.handle; | |
489 | } | |
490 | ||
77c7c900 | 491 | DBG("Relayd stream added successfully with handle %" PRIu64, |
2f21a469 | 492 | reply.handle); |
00e2e675 DG |
493 | |
494 | error: | |
495 | return ret; | |
496 | } | |
497 | ||
a4baae1b JD |
498 | /* |
499 | * Inform the relay that all the streams for the current channel has been sent. | |
500 | * | |
501 | * On success return 0 else return ret_code negative value. | |
502 | */ | |
503 | int relayd_streams_sent(struct lttcomm_relayd_sock *rsock) | |
504 | { | |
505 | int ret; | |
506 | struct lttcomm_relayd_generic_reply reply; | |
507 | ||
508 | /* Code flow error. Safety net. */ | |
509 | assert(rsock); | |
510 | ||
511 | DBG("Relayd sending streams sent."); | |
512 | ||
513 | /* This feature was introduced in 2.4, ignore it for earlier versions. */ | |
514 | if (rsock->minor < 4) { | |
515 | ret = 0; | |
516 | goto end; | |
517 | } | |
518 | ||
519 | /* Send command */ | |
520 | ret = send_command(rsock, RELAYD_STREAMS_SENT, NULL, 0, 0); | |
521 | if (ret < 0) { | |
522 | goto error; | |
523 | } | |
524 | ||
525 | /* Waiting for reply */ | |
526 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); | |
527 | if (ret < 0) { | |
528 | goto error; | |
529 | } | |
530 | ||
531 | /* Back to host bytes order. */ | |
532 | reply.ret_code = be32toh(reply.ret_code); | |
533 | ||
534 | /* Return session id or negative ret code. */ | |
535 | if (reply.ret_code != LTTNG_OK) { | |
536 | ret = -1; | |
537 | ERR("Relayd streams sent replied error %d", reply.ret_code); | |
538 | goto error; | |
539 | } else { | |
540 | /* Success */ | |
541 | ret = 0; | |
542 | } | |
543 | ||
544 | DBG("Relayd streams sent success"); | |
545 | ||
546 | error: | |
547 | end: | |
548 | return ret; | |
549 | } | |
550 | ||
00e2e675 DG |
551 | /* |
552 | * Check version numbers on the relayd. | |
d4519fa3 JD |
553 | * If major versions are compatible, we assign minor_to_use to the |
554 | * minor version of the procotol we are going to use for this session. | |
00e2e675 | 555 | * |
67d5aa28 JD |
556 | * Return 0 if the two daemons are compatible, LTTNG_ERR_RELAYD_VERSION_FAIL |
557 | * otherwise, or a negative value on network errors. | |
00e2e675 | 558 | */ |
6151a90f | 559 | int relayd_version_check(struct lttcomm_relayd_sock *rsock) |
00e2e675 DG |
560 | { |
561 | int ret; | |
092b6259 | 562 | struct lttcomm_relayd_version msg; |
00e2e675 DG |
563 | |
564 | /* Code flow error. Safety net. */ | |
6151a90f | 565 | assert(rsock); |
00e2e675 | 566 | |
6151a90f JD |
567 | DBG("Relayd version check for major.minor %u.%u", rsock->major, |
568 | rsock->minor); | |
00e2e675 | 569 | |
53efb85a | 570 | memset(&msg, 0, sizeof(msg)); |
092b6259 | 571 | /* Prepare network byte order before transmission. */ |
6151a90f JD |
572 | msg.major = htobe32(rsock->major); |
573 | msg.minor = htobe32(rsock->minor); | |
092b6259 | 574 | |
00e2e675 | 575 | /* Send command */ |
6151a90f | 576 | ret = send_command(rsock, RELAYD_VERSION, (void *) &msg, sizeof(msg), 0); |
00e2e675 DG |
577 | if (ret < 0) { |
578 | goto error; | |
579 | } | |
580 | ||
20275fe8 | 581 | /* Receive response */ |
6151a90f | 582 | ret = recv_reply(rsock, (void *) &msg, sizeof(msg)); |
00e2e675 DG |
583 | if (ret < 0) { |
584 | goto error; | |
585 | } | |
586 | ||
587 | /* Set back to host bytes order */ | |
092b6259 DG |
588 | msg.major = be32toh(msg.major); |
589 | msg.minor = be32toh(msg.minor); | |
590 | ||
591 | /* | |
592 | * Only validate the major version. If the other side is higher, | |
593 | * communication is not possible. Only major version equal can talk to each | |
594 | * other. If the minor version differs, the lowest version is used by both | |
595 | * sides. | |
092b6259 | 596 | */ |
6151a90f | 597 | if (msg.major != rsock->major) { |
d4519fa3 | 598 | /* Not compatible */ |
67d5aa28 | 599 | ret = LTTNG_ERR_RELAYD_VERSION_FAIL; |
d4519fa3 | 600 | DBG2("Relayd version is NOT compatible. Relayd version %u != %u (us)", |
6151a90f | 601 | msg.major, rsock->major); |
092b6259 | 602 | goto error; |
00e2e675 DG |
603 | } |
604 | ||
092b6259 | 605 | /* |
6151a90f JD |
606 | * If the relayd's minor version is higher, it will adapt to our version so |
607 | * we can continue to use the latest relayd communication data structure. | |
608 | * If the received minor version is higher, the relayd should adapt to us. | |
092b6259 | 609 | */ |
6151a90f JD |
610 | if (rsock->minor > msg.minor) { |
611 | rsock->minor = msg.minor; | |
d4519fa3 | 612 | } |
092b6259 | 613 | |
d4519fa3 JD |
614 | /* Version number compatible */ |
615 | DBG2("Relayd version is compatible, using protocol version %u.%u", | |
6151a90f | 616 | rsock->major, rsock->minor); |
d4519fa3 | 617 | ret = 0; |
00e2e675 DG |
618 | |
619 | error: | |
620 | return ret; | |
621 | } | |
622 | ||
00e2e675 DG |
623 | /* |
624 | * Add stream on the relayd and assign stream handle to the stream_id argument. | |
625 | * | |
626 | * On success return 0 else return ret_code negative value. | |
627 | */ | |
6151a90f | 628 | int relayd_send_metadata(struct lttcomm_relayd_sock *rsock, size_t len) |
00e2e675 DG |
629 | { |
630 | int ret; | |
631 | ||
632 | /* Code flow error. Safety net. */ | |
6151a90f | 633 | assert(rsock); |
00e2e675 | 634 | |
77c7c900 | 635 | DBG("Relayd sending metadata of size %zu", len); |
00e2e675 DG |
636 | |
637 | /* Send command */ | |
6151a90f | 638 | ret = send_command(rsock, RELAYD_SEND_METADATA, NULL, len, 0); |
00e2e675 DG |
639 | if (ret < 0) { |
640 | goto error; | |
641 | } | |
642 | ||
643 | DBG2("Relayd metadata added successfully"); | |
644 | ||
645 | /* | |
646 | * After that call, the metadata data MUST be sent to the relayd so the | |
647 | * receive size on the other end matches the len of the metadata packet | |
633d0084 | 648 | * header. This is why we don't wait for a reply here. |
00e2e675 DG |
649 | */ |
650 | ||
651 | error: | |
652 | return ret; | |
653 | } | |
654 | ||
655 | /* | |
6151a90f | 656 | * Connect to relay daemon with an allocated lttcomm_relayd_sock. |
00e2e675 | 657 | */ |
6151a90f | 658 | int relayd_connect(struct lttcomm_relayd_sock *rsock) |
00e2e675 DG |
659 | { |
660 | /* Code flow error. Safety net. */ | |
6151a90f | 661 | assert(rsock); |
00e2e675 | 662 | |
f96e4545 MD |
663 | if (!rsock->sock.ops) { |
664 | /* | |
665 | * Attempting a connect on a non-initialized socket. | |
666 | */ | |
667 | return -ECONNRESET; | |
668 | } | |
669 | ||
00e2e675 DG |
670 | DBG3("Relayd connect ..."); |
671 | ||
6151a90f | 672 | return rsock->sock.ops->connect(&rsock->sock); |
00e2e675 DG |
673 | } |
674 | ||
675 | /* | |
6151a90f | 676 | * Close relayd socket with an allocated lttcomm_relayd_sock. |
ffe60014 DG |
677 | * |
678 | * If no socket operations are found, simply return 0 meaning that everything | |
679 | * is fine. Without operations, the socket can not possibly be opened or used. | |
680 | * This is possible if the socket was allocated but not created. However, the | |
681 | * caller could simply use it to store a valid file descriptor for instance | |
682 | * passed over a Unix socket and call this to cleanup but still without a valid | |
683 | * ops pointer. | |
684 | * | |
685 | * Return the close returned value. On error, a negative value is usually | |
686 | * returned back from close(2). | |
00e2e675 | 687 | */ |
6151a90f | 688 | int relayd_close(struct lttcomm_relayd_sock *rsock) |
00e2e675 | 689 | { |
ffe60014 DG |
690 | int ret; |
691 | ||
00e2e675 | 692 | /* Code flow error. Safety net. */ |
6151a90f | 693 | assert(rsock); |
00e2e675 | 694 | |
ffe60014 | 695 | /* An invalid fd is fine, return success. */ |
6151a90f | 696 | if (rsock->sock.fd < 0) { |
ffe60014 DG |
697 | ret = 0; |
698 | goto end; | |
699 | } | |
700 | ||
6151a90f | 701 | DBG3("Relayd closing socket %d", rsock->sock.fd); |
00e2e675 | 702 | |
6151a90f JD |
703 | if (rsock->sock.ops) { |
704 | ret = rsock->sock.ops->close(&rsock->sock); | |
ffe60014 DG |
705 | } else { |
706 | /* Default call if no specific ops found. */ | |
6151a90f | 707 | ret = close(rsock->sock.fd); |
ffe60014 DG |
708 | if (ret < 0) { |
709 | PERROR("relayd_close default close"); | |
710 | } | |
711 | } | |
f96e4545 | 712 | rsock->sock.fd = -1; |
ffe60014 DG |
713 | |
714 | end: | |
715 | return ret; | |
00e2e675 DG |
716 | } |
717 | ||
718 | /* | |
719 | * Send data header structure to the relayd. | |
720 | */ | |
6151a90f | 721 | int relayd_send_data_hdr(struct lttcomm_relayd_sock *rsock, |
00e2e675 DG |
722 | struct lttcomm_relayd_data_hdr *hdr, size_t size) |
723 | { | |
724 | int ret; | |
725 | ||
726 | /* Code flow error. Safety net. */ | |
6151a90f | 727 | assert(rsock); |
00e2e675 DG |
728 | assert(hdr); |
729 | ||
f96e4545 MD |
730 | if (rsock->sock.fd < 0) { |
731 | return -ECONNRESET; | |
732 | } | |
733 | ||
8fd623e0 | 734 | DBG3("Relayd sending data header of size %zu", size); |
00e2e675 DG |
735 | |
736 | /* Again, safety net */ | |
737 | if (size == 0) { | |
738 | size = sizeof(struct lttcomm_relayd_data_hdr); | |
739 | } | |
740 | ||
741 | /* Only send data header. */ | |
6151a90f | 742 | ret = rsock->sock.ops->sendmsg(&rsock->sock, hdr, size, 0); |
00e2e675 | 743 | if (ret < 0) { |
8994307f | 744 | ret = -errno; |
00e2e675 DG |
745 | goto error; |
746 | } | |
747 | ||
748 | /* | |
749 | * The data MUST be sent right after that command for the receive on the | |
750 | * other end to match the size in the header. | |
751 | */ | |
752 | ||
753 | error: | |
754 | return ret; | |
755 | } | |
173af62f DG |
756 | |
757 | /* | |
758 | * Send close stream command to the relayd. | |
759 | */ | |
6151a90f | 760 | int relayd_send_close_stream(struct lttcomm_relayd_sock *rsock, uint64_t stream_id, |
173af62f DG |
761 | uint64_t last_net_seq_num) |
762 | { | |
763 | int ret; | |
764 | struct lttcomm_relayd_close_stream msg; | |
765 | struct lttcomm_relayd_generic_reply reply; | |
766 | ||
767 | /* Code flow error. Safety net. */ | |
6151a90f | 768 | assert(rsock); |
173af62f | 769 | |
77c7c900 | 770 | DBG("Relayd closing stream id %" PRIu64, stream_id); |
173af62f | 771 | |
53efb85a | 772 | memset(&msg, 0, sizeof(msg)); |
173af62f DG |
773 | msg.stream_id = htobe64(stream_id); |
774 | msg.last_net_seq_num = htobe64(last_net_seq_num); | |
775 | ||
776 | /* Send command */ | |
6151a90f | 777 | ret = send_command(rsock, RELAYD_CLOSE_STREAM, (void *) &msg, sizeof(msg), 0); |
173af62f DG |
778 | if (ret < 0) { |
779 | goto error; | |
780 | } | |
781 | ||
20275fe8 | 782 | /* Receive response */ |
6151a90f | 783 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
173af62f DG |
784 | if (ret < 0) { |
785 | goto error; | |
786 | } | |
787 | ||
788 | reply.ret_code = be32toh(reply.ret_code); | |
789 | ||
790 | /* Return session id or negative ret code. */ | |
f73fabfd | 791 | if (reply.ret_code != LTTNG_OK) { |
bb63afd9 DG |
792 | ret = -1; |
793 | ERR("Relayd close stream replied error %d", reply.ret_code); | |
173af62f DG |
794 | } else { |
795 | /* Success */ | |
796 | ret = 0; | |
797 | } | |
798 | ||
77c7c900 | 799 | DBG("Relayd close stream id %" PRIu64 " successfully", stream_id); |
173af62f DG |
800 | |
801 | error: | |
802 | return ret; | |
803 | } | |
c8f59ee5 DG |
804 | |
805 | /* | |
806 | * Check for data availability for a given stream id. | |
807 | * | |
6d805429 | 808 | * Return 0 if NOT pending, 1 if so and a negative value on error. |
c8f59ee5 | 809 | */ |
6151a90f | 810 | int relayd_data_pending(struct lttcomm_relayd_sock *rsock, uint64_t stream_id, |
c8f59ee5 DG |
811 | uint64_t last_net_seq_num) |
812 | { | |
813 | int ret; | |
6d805429 | 814 | struct lttcomm_relayd_data_pending msg; |
c8f59ee5 DG |
815 | struct lttcomm_relayd_generic_reply reply; |
816 | ||
817 | /* Code flow error. Safety net. */ | |
6151a90f | 818 | assert(rsock); |
c8f59ee5 | 819 | |
6d805429 | 820 | DBG("Relayd data pending for stream id %" PRIu64, stream_id); |
c8f59ee5 | 821 | |
53efb85a | 822 | memset(&msg, 0, sizeof(msg)); |
c8f59ee5 DG |
823 | msg.stream_id = htobe64(stream_id); |
824 | msg.last_net_seq_num = htobe64(last_net_seq_num); | |
825 | ||
826 | /* Send command */ | |
6151a90f | 827 | ret = send_command(rsock, RELAYD_DATA_PENDING, (void *) &msg, |
c8f59ee5 DG |
828 | sizeof(msg), 0); |
829 | if (ret < 0) { | |
830 | goto error; | |
831 | } | |
832 | ||
20275fe8 | 833 | /* Receive response */ |
6151a90f | 834 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
c8f59ee5 DG |
835 | if (ret < 0) { |
836 | goto error; | |
837 | } | |
838 | ||
839 | reply.ret_code = be32toh(reply.ret_code); | |
840 | ||
841 | /* Return session id or negative ret code. */ | |
842 | if (reply.ret_code >= LTTNG_OK) { | |
bb63afd9 | 843 | ERR("Relayd data pending replied error %d", reply.ret_code); |
c8f59ee5 DG |
844 | } |
845 | ||
846 | /* At this point, the ret code is either 1 or 0 */ | |
847 | ret = reply.ret_code; | |
848 | ||
6d805429 | 849 | DBG("Relayd data is %s pending for stream id %" PRIu64, |
9dd26bb9 | 850 | ret == 1 ? "" : "NOT", stream_id); |
c8f59ee5 DG |
851 | |
852 | error: | |
853 | return ret; | |
854 | } | |
855 | ||
856 | /* | |
857 | * Check on the relayd side for a quiescent state on the control socket. | |
858 | */ | |
6151a90f | 859 | int relayd_quiescent_control(struct lttcomm_relayd_sock *rsock, |
ad7051c0 | 860 | uint64_t metadata_stream_id) |
c8f59ee5 DG |
861 | { |
862 | int ret; | |
ad7051c0 | 863 | struct lttcomm_relayd_quiescent_control msg; |
c8f59ee5 DG |
864 | struct lttcomm_relayd_generic_reply reply; |
865 | ||
866 | /* Code flow error. Safety net. */ | |
6151a90f | 867 | assert(rsock); |
c8f59ee5 DG |
868 | |
869 | DBG("Relayd checking quiescent control state"); | |
870 | ||
53efb85a | 871 | memset(&msg, 0, sizeof(msg)); |
ad7051c0 DG |
872 | msg.stream_id = htobe64(metadata_stream_id); |
873 | ||
c8f59ee5 | 874 | /* Send command */ |
6151a90f | 875 | ret = send_command(rsock, RELAYD_QUIESCENT_CONTROL, &msg, sizeof(msg), 0); |
c8f59ee5 DG |
876 | if (ret < 0) { |
877 | goto error; | |
878 | } | |
879 | ||
20275fe8 | 880 | /* Receive response */ |
6151a90f | 881 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
c8f59ee5 DG |
882 | if (ret < 0) { |
883 | goto error; | |
884 | } | |
885 | ||
886 | reply.ret_code = be32toh(reply.ret_code); | |
887 | ||
888 | /* Return session id or negative ret code. */ | |
889 | if (reply.ret_code != LTTNG_OK) { | |
bb63afd9 DG |
890 | ret = -1; |
891 | ERR("Relayd quiescent control replied error %d", reply.ret_code); | |
c8f59ee5 DG |
892 | goto error; |
893 | } | |
894 | ||
895 | /* Control socket is quiescent */ | |
6d805429 | 896 | return 0; |
c8f59ee5 DG |
897 | |
898 | error: | |
899 | return ret; | |
900 | } | |
f7079f67 DG |
901 | |
902 | /* | |
903 | * Begin a data pending command for a specific session id. | |
904 | */ | |
6151a90f | 905 | int relayd_begin_data_pending(struct lttcomm_relayd_sock *rsock, uint64_t id) |
f7079f67 DG |
906 | { |
907 | int ret; | |
908 | struct lttcomm_relayd_begin_data_pending msg; | |
909 | struct lttcomm_relayd_generic_reply reply; | |
910 | ||
911 | /* Code flow error. Safety net. */ | |
6151a90f | 912 | assert(rsock); |
f7079f67 DG |
913 | |
914 | DBG("Relayd begin data pending"); | |
915 | ||
53efb85a | 916 | memset(&msg, 0, sizeof(msg)); |
f7079f67 DG |
917 | msg.session_id = htobe64(id); |
918 | ||
919 | /* Send command */ | |
6151a90f | 920 | ret = send_command(rsock, RELAYD_BEGIN_DATA_PENDING, &msg, sizeof(msg), 0); |
f7079f67 DG |
921 | if (ret < 0) { |
922 | goto error; | |
923 | } | |
924 | ||
20275fe8 | 925 | /* Receive response */ |
6151a90f | 926 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
f7079f67 DG |
927 | if (ret < 0) { |
928 | goto error; | |
929 | } | |
930 | ||
931 | reply.ret_code = be32toh(reply.ret_code); | |
932 | ||
933 | /* Return session id or negative ret code. */ | |
934 | if (reply.ret_code != LTTNG_OK) { | |
bb63afd9 DG |
935 | ret = -1; |
936 | ERR("Relayd begin data pending replied error %d", reply.ret_code); | |
f7079f67 DG |
937 | goto error; |
938 | } | |
939 | ||
940 | return 0; | |
941 | ||
942 | error: | |
943 | return ret; | |
944 | } | |
945 | ||
946 | /* | |
947 | * End a data pending command for a specific session id. | |
948 | * | |
949 | * Return 0 on success and set is_data_inflight to 0 if no data is being | |
950 | * streamed or 1 if it is the case. | |
951 | */ | |
6151a90f | 952 | int relayd_end_data_pending(struct lttcomm_relayd_sock *rsock, uint64_t id, |
f7079f67 DG |
953 | unsigned int *is_data_inflight) |
954 | { | |
af6c30b5 | 955 | int ret, recv_ret; |
f7079f67 DG |
956 | struct lttcomm_relayd_end_data_pending msg; |
957 | struct lttcomm_relayd_generic_reply reply; | |
958 | ||
959 | /* Code flow error. Safety net. */ | |
6151a90f | 960 | assert(rsock); |
f7079f67 DG |
961 | |
962 | DBG("Relayd end data pending"); | |
963 | ||
53efb85a | 964 | memset(&msg, 0, sizeof(msg)); |
f7079f67 DG |
965 | msg.session_id = htobe64(id); |
966 | ||
967 | /* Send command */ | |
6151a90f | 968 | ret = send_command(rsock, RELAYD_END_DATA_PENDING, &msg, sizeof(msg), 0); |
f7079f67 DG |
969 | if (ret < 0) { |
970 | goto error; | |
971 | } | |
972 | ||
20275fe8 | 973 | /* Receive response */ |
6151a90f | 974 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
f7079f67 DG |
975 | if (ret < 0) { |
976 | goto error; | |
977 | } | |
978 | ||
af6c30b5 DG |
979 | recv_ret = be32toh(reply.ret_code); |
980 | if (recv_ret < 0) { | |
981 | ret = recv_ret; | |
f7079f67 DG |
982 | goto error; |
983 | } | |
984 | ||
af6c30b5 | 985 | *is_data_inflight = recv_ret; |
f7079f67 | 986 | |
af6c30b5 | 987 | DBG("Relayd end data pending is data inflight: %d", recv_ret); |
f7079f67 DG |
988 | |
989 | return 0; | |
990 | ||
991 | error: | |
992 | return ret; | |
993 | } | |
1c20f0e2 JD |
994 | |
995 | /* | |
996 | * Send index to the relayd. | |
997 | */ | |
998 | int relayd_send_index(struct lttcomm_relayd_sock *rsock, | |
50adc264 | 999 | struct ctf_packet_index *index, uint64_t relay_stream_id, |
1c20f0e2 JD |
1000 | uint64_t net_seq_num) |
1001 | { | |
1002 | int ret; | |
1003 | struct lttcomm_relayd_index msg; | |
1004 | struct lttcomm_relayd_generic_reply reply; | |
1005 | ||
1006 | /* Code flow error. Safety net. */ | |
1007 | assert(rsock); | |
1008 | ||
1009 | if (rsock->minor < 4) { | |
1010 | DBG("Not sending indexes before protocol 2.4"); | |
1011 | ret = 0; | |
1012 | goto error; | |
1013 | } | |
1014 | ||
1015 | DBG("Relayd sending index for stream ID %" PRIu64, relay_stream_id); | |
1016 | ||
53efb85a | 1017 | memset(&msg, 0, sizeof(msg)); |
1c20f0e2 JD |
1018 | msg.relay_stream_id = htobe64(relay_stream_id); |
1019 | msg.net_seq_num = htobe64(net_seq_num); | |
1020 | ||
1021 | /* The index is already in big endian. */ | |
1022 | msg.packet_size = index->packet_size; | |
1023 | msg.content_size = index->content_size; | |
1024 | msg.timestamp_begin = index->timestamp_begin; | |
1025 | msg.timestamp_end = index->timestamp_end; | |
1026 | msg.events_discarded = index->events_discarded; | |
1027 | msg.stream_id = index->stream_id; | |
1028 | ||
234cd636 JD |
1029 | if (rsock->minor >= 8) { |
1030 | msg.stream_instance_id = index->stream_instance_id; | |
1031 | msg.packet_seq_num = index->packet_seq_num; | |
1032 | } | |
1033 | ||
1c20f0e2 | 1034 | /* Send command */ |
f8f3885c MD |
1035 | ret = send_command(rsock, RELAYD_SEND_INDEX, &msg, |
1036 | lttcomm_relayd_index_len(lttng_to_index_major(rsock->major, | |
1037 | rsock->minor), | |
1038 | lttng_to_index_minor(rsock->major, rsock->minor)), | |
1039 | 0); | |
1c20f0e2 JD |
1040 | if (ret < 0) { |
1041 | goto error; | |
1042 | } | |
1043 | ||
1044 | /* Receive response */ | |
1045 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); | |
1046 | if (ret < 0) { | |
1047 | goto error; | |
1048 | } | |
1049 | ||
1050 | reply.ret_code = be32toh(reply.ret_code); | |
1051 | ||
1052 | /* Return session id or negative ret code. */ | |
1053 | if (reply.ret_code != LTTNG_OK) { | |
1054 | ret = -1; | |
1055 | ERR("Relayd send index replied error %d", reply.ret_code); | |
1056 | } else { | |
1057 | /* Success */ | |
1058 | ret = 0; | |
1059 | } | |
1060 | ||
1061 | error: | |
1062 | return ret; | |
1063 | } | |
93ec662e JD |
1064 | |
1065 | /* | |
1066 | * Ask the relay to reset the metadata trace file (regeneration). | |
1067 | */ | |
1068 | int relayd_reset_metadata(struct lttcomm_relayd_sock *rsock, | |
1069 | uint64_t stream_id, uint64_t version) | |
1070 | { | |
1071 | int ret; | |
1072 | struct lttcomm_relayd_reset_metadata msg; | |
1073 | struct lttcomm_relayd_generic_reply reply; | |
1074 | ||
1075 | /* Code flow error. Safety net. */ | |
1076 | assert(rsock); | |
1077 | ||
1078 | /* Should have been prevented by the sessiond. */ | |
1079 | if (rsock->minor < 8) { | |
1080 | ERR("Metadata regeneration unsupported before 2.8"); | |
1081 | ret = -1; | |
1082 | goto error; | |
1083 | } | |
1084 | ||
1085 | DBG("Relayd reset metadata stream id %" PRIu64, stream_id); | |
1086 | ||
1087 | memset(&msg, 0, sizeof(msg)); | |
1088 | msg.stream_id = htobe64(stream_id); | |
1089 | msg.version = htobe64(version); | |
1090 | ||
1091 | /* Send command */ | |
1092 | ret = send_command(rsock, RELAYD_RESET_METADATA, (void *) &msg, sizeof(msg), 0); | |
1093 | if (ret < 0) { | |
1094 | goto error; | |
1095 | } | |
1096 | ||
1097 | /* Receive response */ | |
1098 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); | |
1099 | if (ret < 0) { | |
1100 | goto error; | |
1101 | } | |
1102 | ||
1103 | reply.ret_code = be32toh(reply.ret_code); | |
1104 | ||
1105 | /* Return session id or negative ret code. */ | |
1106 | if (reply.ret_code != LTTNG_OK) { | |
1107 | ret = -1; | |
1108 | ERR("Relayd reset metadata replied error %d", reply.ret_code); | |
1109 | } else { | |
1110 | /* Success */ | |
1111 | ret = 0; | |
1112 | } | |
1113 | ||
1114 | DBG("Relayd reset metadata stream id %" PRIu64 " successfully", stream_id); | |
1115 | ||
1116 | error: | |
1117 | return ret; | |
1118 | } | |
a1ae2ea5 | 1119 | |
d73bf3d7 | 1120 | int relayd_rotate_stream(struct lttcomm_relayd_sock *rsock, uint64_t stream_id, |
d2956687 | 1121 | uint64_t new_chunk_id, uint64_t seq_num) |
d73bf3d7 JD |
1122 | { |
1123 | int ret; | |
1124 | struct lttcomm_relayd_rotate_stream *msg = NULL; | |
1125 | struct lttcomm_relayd_generic_reply reply; | |
1126 | size_t len; | |
1127 | int msg_len; | |
d2956687 JG |
1128 | /* FIXME */ |
1129 | char *new_pathname = NULL; | |
d73bf3d7 JD |
1130 | |
1131 | /* Code flow error. Safety net. */ | |
1132 | assert(rsock); | |
1133 | ||
1134 | DBG("Sending rotate stream id %" PRIu64 " command to relayd", stream_id); | |
1135 | ||
1136 | /* Account for the trailing NULL. */ | |
27283937 | 1137 | len = lttng_strnlen(new_pathname, LTTNG_PATH_MAX) + 1; |
d73bf3d7 JD |
1138 | if (len > LTTNG_PATH_MAX) { |
1139 | ERR("Path used in relayd rotate stream command exceeds the maximal allowed length"); | |
1140 | ret = -1; | |
1141 | goto error; | |
1142 | } | |
1143 | ||
1144 | msg_len = offsetof(struct lttcomm_relayd_rotate_stream, new_pathname) + len; | |
1145 | msg = zmalloc(msg_len); | |
1146 | if (!msg) { | |
1147 | PERROR("Failed to allocate relayd rotate stream command of %d bytes", | |
1148 | msg_len); | |
1149 | ret = -1; | |
1150 | goto error; | |
1151 | } | |
1152 | ||
1153 | if (lttng_strncpy(msg->new_pathname, new_pathname, len)) { | |
1154 | ret = -1; | |
1155 | ERR("Failed to copy relayd rotate stream command's new path name"); | |
1156 | goto error; | |
1157 | } | |
1158 | ||
1159 | msg->pathname_length = htobe32(len); | |
1160 | msg->stream_id = htobe64(stream_id); | |
1161 | msg->new_chunk_id = htobe64(new_chunk_id); | |
1162 | /* | |
1163 | * The seq_num is invalid for metadata streams, but it is ignored on | |
1164 | * the relay. | |
1165 | */ | |
1166 | msg->rotate_at_seq_num = htobe64(seq_num); | |
1167 | ||
1168 | /* Send command. */ | |
1169 | ret = send_command(rsock, RELAYD_ROTATE_STREAM, (void *) msg, msg_len, 0); | |
1170 | if (ret < 0) { | |
1171 | ERR("Send rotate command"); | |
1172 | goto error; | |
1173 | } | |
1174 | ||
1175 | /* Receive response. */ | |
1176 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); | |
1177 | if (ret < 0) { | |
1178 | ERR("Receive rotate reply"); | |
1179 | goto error; | |
1180 | } | |
1181 | ||
1182 | reply.ret_code = be32toh(reply.ret_code); | |
1183 | ||
1184 | /* Return session id or negative ret code. */ | |
1185 | if (reply.ret_code != LTTNG_OK) { | |
1186 | ret = -1; | |
1187 | ERR("Relayd rotate stream replied error %d", reply.ret_code); | |
1188 | } else { | |
1189 | /* Success. */ | |
1190 | ret = 0; | |
1191 | DBG("Relayd rotated stream id %" PRIu64 " successfully", stream_id); | |
1192 | } | |
1193 | ||
1194 | error: | |
1195 | free(msg); | |
1196 | return ret; | |
1197 | } |