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, |
76b9afaa | 38 | enum lttcomm_relayd_command cmd, const 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 | ||
06586bbe | 75 | DBG3("Relayd sending command %d of size %" PRIu64, (int) cmd, buf_size); |
6151a90f | 76 | ret = rsock->sock.ops->sendmsg(&rsock->sock, buf, buf_size, flags); |
00e2e675 | 77 | if (ret < 0) { |
06586bbe JG |
78 | PERROR("Failed to send command %d of size %" PRIu64, |
79 | (int) cmd, buf_size); | |
8994307f | 80 | ret = -errno; |
00e2e675 DG |
81 | goto error; |
82 | } | |
00e2e675 DG |
83 | error: |
84 | free(buf); | |
85 | alloc_error: | |
86 | return ret; | |
87 | } | |
88 | ||
89 | /* | |
90 | * Receive reply data on socket. This MUST be call after send_command or else | |
91 | * could result in unexpected behavior(s). | |
92 | */ | |
6151a90f | 93 | static int recv_reply(struct lttcomm_relayd_sock *rsock, void *data, size_t size) |
00e2e675 DG |
94 | { |
95 | int ret; | |
96 | ||
f96e4545 MD |
97 | if (rsock->sock.fd < 0) { |
98 | return -ECONNRESET; | |
99 | } | |
100 | ||
8fd623e0 | 101 | DBG3("Relayd waiting for reply of size %zu", size); |
00e2e675 | 102 | |
6151a90f | 103 | ret = rsock->sock.ops->recvmsg(&rsock->sock, data, size, 0); |
20275fe8 DG |
104 | if (ret <= 0 || ret != size) { |
105 | if (ret == 0) { | |
106 | /* Orderly shutdown. */ | |
6151a90f | 107 | DBG("Socket %d has performed an orderly shutdown", rsock->sock.fd); |
20275fe8 | 108 | } else { |
8fd623e0 | 109 | DBG("Receiving reply failed on sock %d for size %zu with ret %d", |
6151a90f | 110 | rsock->sock.fd, size, ret); |
20275fe8 DG |
111 | } |
112 | /* Always return -1 here and the caller can use errno. */ | |
113 | ret = -1; | |
00e2e675 DG |
114 | goto error; |
115 | } | |
116 | ||
117 | error: | |
118 | return ret; | |
119 | } | |
120 | ||
d3e2ba59 | 121 | /* |
f86f6389 JR |
122 | * Starting from 2.11, RELAYD_CREATE_SESSION payload (session_name & hostname) |
123 | * have no length restriction on the sender side. | |
124 | * Length for both payloads is stored in the msg struct. A new dynamic size | |
125 | * payload size is introduced. | |
126 | */ | |
127 | static int relayd_create_session_2_11(struct lttcomm_relayd_sock *rsock, | |
128 | char *session_name, char *hostname, | |
129 | int session_live_timer, unsigned int snapshot) | |
130 | { | |
131 | int ret; | |
132 | struct lttcomm_relayd_create_session_2_11 *msg = NULL; | |
133 | size_t session_name_len; | |
134 | size_t hostname_len; | |
135 | size_t msg_length; | |
136 | ||
137 | /* The two names are sent with a '\0' delimiter between them. */ | |
138 | session_name_len = strlen(session_name) + 1; | |
139 | hostname_len = strlen(hostname) + 1; | |
140 | ||
141 | msg_length = sizeof(*msg) + session_name_len + hostname_len; | |
142 | msg = zmalloc(msg_length); | |
143 | if (!msg) { | |
144 | PERROR("zmalloc create_session_2_11 command message"); | |
145 | ret = -1; | |
146 | goto error; | |
147 | } | |
148 | ||
149 | assert(session_name_len <= UINT32_MAX); | |
150 | msg->session_name_len = htobe32(session_name_len); | |
151 | ||
152 | assert(hostname_len <= UINT32_MAX); | |
153 | msg->hostname_len = htobe32(hostname_len); | |
154 | ||
155 | if (lttng_strncpy(msg->names, session_name, session_name_len)) { | |
156 | ret = -1; | |
157 | goto error; | |
158 | } | |
159 | if (lttng_strncpy(msg->names + session_name_len, hostname, hostname_len)) { | |
160 | ret = -1; | |
161 | goto error; | |
162 | } | |
163 | ||
164 | msg->live_timer = htobe32(session_live_timer); | |
165 | msg->snapshot = !!snapshot; | |
166 | ||
167 | /* Send command */ | |
168 | ret = send_command(rsock, RELAYD_CREATE_SESSION, msg, msg_length, 0); | |
169 | if (ret < 0) { | |
170 | goto error; | |
171 | } | |
172 | error: | |
173 | free(msg); | |
174 | return ret; | |
175 | } | |
176 | /* | |
177 | * From 2.4 to 2.10, RELAYD_CREATE_SESSION takes additional parameters to | |
d3e2ba59 JD |
178 | * support the live reading capability. |
179 | */ | |
180 | static int relayd_create_session_2_4(struct lttcomm_relayd_sock *rsock, | |
42e9a27b JR |
181 | char *session_name, char *hostname, int session_live_timer, |
182 | unsigned int snapshot) | |
d3e2ba59 JD |
183 | { |
184 | int ret; | |
185 | struct lttcomm_relayd_create_session_2_4 msg; | |
186 | ||
3a13ffd5 MD |
187 | if (lttng_strncpy(msg.session_name, session_name, |
188 | sizeof(msg.session_name))) { | |
246777db MD |
189 | ret = -1; |
190 | goto error; | |
191 | } | |
3a13ffd5 | 192 | if (lttng_strncpy(msg.hostname, hostname, sizeof(msg.hostname))) { |
246777db MD |
193 | ret = -1; |
194 | goto error; | |
195 | } | |
d3e2ba59 | 196 | msg.live_timer = htobe32(session_live_timer); |
7d2f7452 | 197 | msg.snapshot = htobe32(snapshot); |
d3e2ba59 JD |
198 | |
199 | /* Send command */ | |
200 | ret = send_command(rsock, RELAYD_CREATE_SESSION, &msg, sizeof(msg), 0); | |
201 | if (ret < 0) { | |
202 | goto error; | |
203 | } | |
204 | ||
205 | error: | |
206 | return ret; | |
207 | } | |
208 | ||
209 | /* | |
210 | * RELAYD_CREATE_SESSION from 2.1 to 2.3. | |
211 | */ | |
42e9a27b | 212 | static int relayd_create_session_2_1(struct lttcomm_relayd_sock *rsock) |
d3e2ba59 JD |
213 | { |
214 | int ret; | |
215 | ||
216 | /* Send command */ | |
217 | ret = send_command(rsock, RELAYD_CREATE_SESSION, NULL, 0, 0); | |
218 | if (ret < 0) { | |
219 | goto error; | |
220 | } | |
221 | ||
222 | error: | |
223 | return ret; | |
224 | } | |
225 | ||
c5b6f4f0 DG |
226 | /* |
227 | * Send a RELAYD_CREATE_SESSION command to the relayd with the given socket and | |
228 | * set session_id of the relayd if we have a successful reply from the relayd. | |
229 | * | |
20275fe8 DG |
230 | * On success, return 0 else a negative value which is either an errno error or |
231 | * a lttng error code from the relayd. | |
c5b6f4f0 | 232 | */ |
d3e2ba59 | 233 | int relayd_create_session(struct lttcomm_relayd_sock *rsock, uint64_t *session_id, |
7d2f7452 DG |
234 | char *session_name, char *hostname, int session_live_timer, |
235 | unsigned int snapshot) | |
c5b6f4f0 DG |
236 | { |
237 | int ret; | |
238 | struct lttcomm_relayd_status_session reply; | |
239 | ||
6151a90f | 240 | assert(rsock); |
c5b6f4f0 DG |
241 | assert(session_id); |
242 | ||
243 | DBG("Relayd create session"); | |
244 | ||
f86f6389 JR |
245 | if (rsock->minor < 4) { |
246 | /* From 2.1 to 2.3 */ | |
247 | ret = relayd_create_session_2_1(rsock); | |
248 | } else if (rsock->minor >= 4 && rsock->minor < 11) { | |
249 | /* From 2.4 to 2.10 */ | |
250 | ret = relayd_create_session_2_4(rsock, session_name, | |
251 | hostname, session_live_timer, snapshot); | |
252 | } else { | |
253 | /* From 2.11 to ... */ | |
254 | ret = relayd_create_session_2_11(rsock, session_name, | |
255 | hostname, session_live_timer, snapshot); | |
d3e2ba59 JD |
256 | } |
257 | ||
c5b6f4f0 DG |
258 | if (ret < 0) { |
259 | goto error; | |
260 | } | |
261 | ||
20275fe8 | 262 | /* Receive response */ |
6151a90f | 263 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
c5b6f4f0 DG |
264 | if (ret < 0) { |
265 | goto error; | |
266 | } | |
267 | ||
268 | reply.session_id = be64toh(reply.session_id); | |
269 | reply.ret_code = be32toh(reply.ret_code); | |
270 | ||
271 | /* Return session id or negative ret code. */ | |
272 | if (reply.ret_code != LTTNG_OK) { | |
bb63afd9 DG |
273 | ret = -1; |
274 | ERR("Relayd create session replied error %d", reply.ret_code); | |
c5b6f4f0 DG |
275 | goto error; |
276 | } else { | |
277 | ret = 0; | |
278 | *session_id = reply.session_id; | |
279 | } | |
280 | ||
281 | DBG("Relayd session created with id %" PRIu64, reply.session_id); | |
282 | ||
283 | error: | |
284 | return ret; | |
285 | } | |
286 | ||
2f21a469 JR |
287 | static int relayd_add_stream_2_1(struct lttcomm_relayd_sock *rsock, |
288 | const char *channel_name, const char *pathname) | |
289 | { | |
290 | int ret; | |
291 | struct lttcomm_relayd_add_stream msg; | |
292 | ||
293 | memset(&msg, 0, sizeof(msg)); | |
294 | if (lttng_strncpy(msg.channel_name, channel_name, | |
295 | sizeof(msg.channel_name))) { | |
296 | ret = -1; | |
297 | goto error; | |
298 | } | |
299 | ||
300 | if (lttng_strncpy(msg.pathname, pathname, | |
301 | sizeof(msg.pathname))) { | |
302 | ret = -1; | |
303 | goto error; | |
304 | } | |
305 | ||
306 | /* Send command */ | |
307 | ret = send_command(rsock, RELAYD_ADD_STREAM, (void *) &msg, sizeof(msg), 0); | |
308 | if (ret < 0) { | |
309 | ret = -1; | |
310 | goto error; | |
311 | } | |
312 | ret = 0; | |
313 | error: | |
314 | return ret; | |
315 | } | |
316 | ||
317 | static int relayd_add_stream_2_2(struct lttcomm_relayd_sock *rsock, | |
318 | const char *channel_name, const char *pathname, | |
319 | uint64_t tracefile_size, uint64_t tracefile_count) | |
320 | { | |
321 | int ret; | |
322 | struct lttcomm_relayd_add_stream_2_2 msg; | |
323 | ||
324 | memset(&msg, 0, sizeof(msg)); | |
325 | /* Compat with relayd 2.2 to 2.10 */ | |
326 | if (lttng_strncpy(msg.channel_name, channel_name, | |
327 | sizeof(msg.channel_name))) { | |
328 | ret = -1; | |
329 | goto error; | |
330 | } | |
331 | if (lttng_strncpy(msg.pathname, pathname, | |
332 | sizeof(msg.pathname))) { | |
333 | ret = -1; | |
334 | goto error; | |
335 | } | |
336 | msg.tracefile_size = htobe64(tracefile_size); | |
337 | msg.tracefile_count = htobe64(tracefile_count); | |
338 | ||
339 | /* Send command */ | |
340 | ret = send_command(rsock, RELAYD_ADD_STREAM, (void *) &msg, sizeof(msg), 0); | |
341 | if (ret < 0) { | |
342 | goto error; | |
343 | } | |
344 | ret = 0; | |
345 | error: | |
346 | return ret; | |
347 | } | |
348 | ||
349 | static int relayd_add_stream_2_11(struct lttcomm_relayd_sock *rsock, | |
350 | const char *channel_name, const char *pathname, | |
351 | uint64_t tracefile_size, uint64_t tracefile_count) | |
352 | { | |
353 | int ret; | |
354 | struct lttcomm_relayd_add_stream_2_11 *msg = NULL; | |
355 | size_t channel_name_len; | |
356 | size_t pathname_len; | |
357 | size_t msg_length; | |
358 | ||
359 | /* The two names are sent with a '\0' delimiter between them. */ | |
360 | channel_name_len = strlen(channel_name) + 1; | |
361 | pathname_len = strlen(pathname) + 1; | |
362 | ||
363 | msg_length = sizeof(*msg) + channel_name_len + pathname_len; | |
364 | msg = zmalloc(msg_length); | |
365 | if (!msg) { | |
366 | PERROR("zmalloc add_stream_2_11 command message"); | |
367 | ret = -1; | |
368 | goto error; | |
369 | } | |
370 | ||
371 | assert(channel_name_len <= UINT32_MAX); | |
372 | msg->channel_name_len = htobe32(channel_name_len); | |
373 | ||
374 | assert(pathname_len <= UINT32_MAX); | |
375 | msg->pathname_len = htobe32(pathname_len); | |
376 | ||
377 | if (lttng_strncpy(msg->names, channel_name, channel_name_len)) { | |
378 | ret = -1; | |
379 | goto error; | |
380 | } | |
381 | if (lttng_strncpy(msg->names + channel_name_len, pathname, pathname_len)) { | |
382 | ret = -1; | |
383 | goto error; | |
384 | } | |
385 | ||
386 | msg->tracefile_size = htobe64(tracefile_size); | |
387 | msg->tracefile_count = htobe64(tracefile_count); | |
388 | ||
389 | /* Send command */ | |
390 | ret = send_command(rsock, RELAYD_ADD_STREAM, (void *) msg, msg_length, 0); | |
391 | if (ret < 0) { | |
392 | goto error; | |
393 | } | |
394 | ret = 0; | |
395 | error: | |
396 | free(msg); | |
397 | return ret; | |
398 | } | |
399 | ||
00e2e675 DG |
400 | /* |
401 | * Add stream on the relayd and assign stream handle to the stream_id argument. | |
402 | * | |
403 | * On success return 0 else return ret_code negative value. | |
404 | */ | |
6151a90f | 405 | int relayd_add_stream(struct lttcomm_relayd_sock *rsock, const char *channel_name, |
0f907de1 JD |
406 | const char *pathname, uint64_t *stream_id, |
407 | uint64_t tracefile_size, uint64_t tracefile_count) | |
00e2e675 DG |
408 | { |
409 | int ret; | |
00e2e675 DG |
410 | struct lttcomm_relayd_status_stream reply; |
411 | ||
412 | /* Code flow error. Safety net. */ | |
6151a90f | 413 | assert(rsock); |
00e2e675 DG |
414 | assert(channel_name); |
415 | assert(pathname); | |
416 | ||
417 | DBG("Relayd adding stream for channel name %s", channel_name); | |
418 | ||
0f907de1 JD |
419 | /* Compat with relayd 2.1 */ |
420 | if (rsock->minor == 1) { | |
2f21a469 JR |
421 | /* For 2.1 */ |
422 | ret = relayd_add_stream_2_1(rsock, channel_name, pathname); | |
423 | ||
424 | } else if (rsock->minor > 1 && rsock->minor < 11) { | |
425 | /* From 2.2 to 2.10 */ | |
426 | ret = relayd_add_stream_2_2(rsock, channel_name, pathname, | |
427 | tracefile_size, tracefile_count); | |
0f907de1 | 428 | } else { |
2f21a469 JR |
429 | /* From 2.11 to ...*/ |
430 | ret = relayd_add_stream_2_11(rsock, channel_name, pathname, | |
431 | tracefile_size, tracefile_count); | |
432 | } | |
0f907de1 | 433 | |
2f21a469 JR |
434 | if (ret) { |
435 | ret = -1; | |
436 | goto error; | |
00e2e675 DG |
437 | } |
438 | ||
633d0084 | 439 | /* Waiting for reply */ |
6151a90f | 440 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
00e2e675 DG |
441 | if (ret < 0) { |
442 | goto error; | |
443 | } | |
444 | ||
445 | /* Back to host bytes order. */ | |
446 | reply.handle = be64toh(reply.handle); | |
447 | reply.ret_code = be32toh(reply.ret_code); | |
448 | ||
449 | /* Return session id or negative ret code. */ | |
f73fabfd | 450 | if (reply.ret_code != LTTNG_OK) { |
bb63afd9 DG |
451 | ret = -1; |
452 | ERR("Relayd add stream replied error %d", reply.ret_code); | |
00e2e675 DG |
453 | } else { |
454 | /* Success */ | |
455 | ret = 0; | |
456 | *stream_id = reply.handle; | |
457 | } | |
458 | ||
77c7c900 | 459 | DBG("Relayd stream added successfully with handle %" PRIu64, |
2f21a469 | 460 | reply.handle); |
00e2e675 DG |
461 | |
462 | error: | |
463 | return ret; | |
464 | } | |
465 | ||
a4baae1b JD |
466 | /* |
467 | * Inform the relay that all the streams for the current channel has been sent. | |
468 | * | |
469 | * On success return 0 else return ret_code negative value. | |
470 | */ | |
471 | int relayd_streams_sent(struct lttcomm_relayd_sock *rsock) | |
472 | { | |
473 | int ret; | |
474 | struct lttcomm_relayd_generic_reply reply; | |
475 | ||
476 | /* Code flow error. Safety net. */ | |
477 | assert(rsock); | |
478 | ||
479 | DBG("Relayd sending streams sent."); | |
480 | ||
481 | /* This feature was introduced in 2.4, ignore it for earlier versions. */ | |
482 | if (rsock->minor < 4) { | |
483 | ret = 0; | |
484 | goto end; | |
485 | } | |
486 | ||
487 | /* Send command */ | |
488 | ret = send_command(rsock, RELAYD_STREAMS_SENT, NULL, 0, 0); | |
489 | if (ret < 0) { | |
490 | goto error; | |
491 | } | |
492 | ||
493 | /* Waiting for reply */ | |
494 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); | |
495 | if (ret < 0) { | |
496 | goto error; | |
497 | } | |
498 | ||
499 | /* Back to host bytes order. */ | |
500 | reply.ret_code = be32toh(reply.ret_code); | |
501 | ||
502 | /* Return session id or negative ret code. */ | |
503 | if (reply.ret_code != LTTNG_OK) { | |
504 | ret = -1; | |
505 | ERR("Relayd streams sent replied error %d", reply.ret_code); | |
506 | goto error; | |
507 | } else { | |
508 | /* Success */ | |
509 | ret = 0; | |
510 | } | |
511 | ||
512 | DBG("Relayd streams sent success"); | |
513 | ||
514 | error: | |
515 | end: | |
516 | return ret; | |
517 | } | |
518 | ||
00e2e675 DG |
519 | /* |
520 | * Check version numbers on the relayd. | |
d4519fa3 JD |
521 | * If major versions are compatible, we assign minor_to_use to the |
522 | * minor version of the procotol we are going to use for this session. | |
00e2e675 | 523 | * |
67d5aa28 JD |
524 | * Return 0 if the two daemons are compatible, LTTNG_ERR_RELAYD_VERSION_FAIL |
525 | * otherwise, or a negative value on network errors. | |
00e2e675 | 526 | */ |
6151a90f | 527 | int relayd_version_check(struct lttcomm_relayd_sock *rsock) |
00e2e675 DG |
528 | { |
529 | int ret; | |
092b6259 | 530 | struct lttcomm_relayd_version msg; |
00e2e675 DG |
531 | |
532 | /* Code flow error. Safety net. */ | |
6151a90f | 533 | assert(rsock); |
00e2e675 | 534 | |
6151a90f JD |
535 | DBG("Relayd version check for major.minor %u.%u", rsock->major, |
536 | rsock->minor); | |
00e2e675 | 537 | |
53efb85a | 538 | memset(&msg, 0, sizeof(msg)); |
092b6259 | 539 | /* Prepare network byte order before transmission. */ |
6151a90f JD |
540 | msg.major = htobe32(rsock->major); |
541 | msg.minor = htobe32(rsock->minor); | |
092b6259 | 542 | |
00e2e675 | 543 | /* Send command */ |
6151a90f | 544 | ret = send_command(rsock, RELAYD_VERSION, (void *) &msg, sizeof(msg), 0); |
00e2e675 DG |
545 | if (ret < 0) { |
546 | goto error; | |
547 | } | |
548 | ||
20275fe8 | 549 | /* Receive response */ |
6151a90f | 550 | ret = recv_reply(rsock, (void *) &msg, sizeof(msg)); |
00e2e675 DG |
551 | if (ret < 0) { |
552 | goto error; | |
553 | } | |
554 | ||
555 | /* Set back to host bytes order */ | |
092b6259 DG |
556 | msg.major = be32toh(msg.major); |
557 | msg.minor = be32toh(msg.minor); | |
558 | ||
559 | /* | |
560 | * Only validate the major version. If the other side is higher, | |
561 | * communication is not possible. Only major version equal can talk to each | |
562 | * other. If the minor version differs, the lowest version is used by both | |
563 | * sides. | |
092b6259 | 564 | */ |
6151a90f | 565 | if (msg.major != rsock->major) { |
d4519fa3 | 566 | /* Not compatible */ |
67d5aa28 | 567 | ret = LTTNG_ERR_RELAYD_VERSION_FAIL; |
d4519fa3 | 568 | DBG2("Relayd version is NOT compatible. Relayd version %u != %u (us)", |
6151a90f | 569 | msg.major, rsock->major); |
092b6259 | 570 | goto error; |
00e2e675 DG |
571 | } |
572 | ||
092b6259 | 573 | /* |
6151a90f JD |
574 | * If the relayd's minor version is higher, it will adapt to our version so |
575 | * we can continue to use the latest relayd communication data structure. | |
576 | * If the received minor version is higher, the relayd should adapt to us. | |
092b6259 | 577 | */ |
6151a90f JD |
578 | if (rsock->minor > msg.minor) { |
579 | rsock->minor = msg.minor; | |
d4519fa3 | 580 | } |
092b6259 | 581 | |
d4519fa3 JD |
582 | /* Version number compatible */ |
583 | DBG2("Relayd version is compatible, using protocol version %u.%u", | |
6151a90f | 584 | rsock->major, rsock->minor); |
d4519fa3 | 585 | ret = 0; |
00e2e675 DG |
586 | |
587 | error: | |
588 | return ret; | |
589 | } | |
590 | ||
00e2e675 DG |
591 | /* |
592 | * Add stream on the relayd and assign stream handle to the stream_id argument. | |
593 | * | |
594 | * On success return 0 else return ret_code negative value. | |
595 | */ | |
6151a90f | 596 | int relayd_send_metadata(struct lttcomm_relayd_sock *rsock, size_t len) |
00e2e675 DG |
597 | { |
598 | int ret; | |
599 | ||
600 | /* Code flow error. Safety net. */ | |
6151a90f | 601 | assert(rsock); |
00e2e675 | 602 | |
77c7c900 | 603 | DBG("Relayd sending metadata of size %zu", len); |
00e2e675 DG |
604 | |
605 | /* Send command */ | |
6151a90f | 606 | ret = send_command(rsock, RELAYD_SEND_METADATA, NULL, len, 0); |
00e2e675 DG |
607 | if (ret < 0) { |
608 | goto error; | |
609 | } | |
610 | ||
611 | DBG2("Relayd metadata added successfully"); | |
612 | ||
613 | /* | |
614 | * After that call, the metadata data MUST be sent to the relayd so the | |
615 | * receive size on the other end matches the len of the metadata packet | |
633d0084 | 616 | * header. This is why we don't wait for a reply here. |
00e2e675 DG |
617 | */ |
618 | ||
619 | error: | |
620 | return ret; | |
621 | } | |
622 | ||
623 | /* | |
6151a90f | 624 | * Connect to relay daemon with an allocated lttcomm_relayd_sock. |
00e2e675 | 625 | */ |
6151a90f | 626 | int relayd_connect(struct lttcomm_relayd_sock *rsock) |
00e2e675 DG |
627 | { |
628 | /* Code flow error. Safety net. */ | |
6151a90f | 629 | assert(rsock); |
00e2e675 | 630 | |
f96e4545 MD |
631 | if (!rsock->sock.ops) { |
632 | /* | |
633 | * Attempting a connect on a non-initialized socket. | |
634 | */ | |
635 | return -ECONNRESET; | |
636 | } | |
637 | ||
00e2e675 DG |
638 | DBG3("Relayd connect ..."); |
639 | ||
6151a90f | 640 | return rsock->sock.ops->connect(&rsock->sock); |
00e2e675 DG |
641 | } |
642 | ||
643 | /* | |
6151a90f | 644 | * Close relayd socket with an allocated lttcomm_relayd_sock. |
ffe60014 DG |
645 | * |
646 | * If no socket operations are found, simply return 0 meaning that everything | |
647 | * is fine. Without operations, the socket can not possibly be opened or used. | |
648 | * This is possible if the socket was allocated but not created. However, the | |
649 | * caller could simply use it to store a valid file descriptor for instance | |
650 | * passed over a Unix socket and call this to cleanup but still without a valid | |
651 | * ops pointer. | |
652 | * | |
653 | * Return the close returned value. On error, a negative value is usually | |
654 | * returned back from close(2). | |
00e2e675 | 655 | */ |
6151a90f | 656 | int relayd_close(struct lttcomm_relayd_sock *rsock) |
00e2e675 | 657 | { |
ffe60014 DG |
658 | int ret; |
659 | ||
00e2e675 | 660 | /* Code flow error. Safety net. */ |
6151a90f | 661 | assert(rsock); |
00e2e675 | 662 | |
ffe60014 | 663 | /* An invalid fd is fine, return success. */ |
6151a90f | 664 | if (rsock->sock.fd < 0) { |
ffe60014 DG |
665 | ret = 0; |
666 | goto end; | |
667 | } | |
668 | ||
6151a90f | 669 | DBG3("Relayd closing socket %d", rsock->sock.fd); |
00e2e675 | 670 | |
6151a90f JD |
671 | if (rsock->sock.ops) { |
672 | ret = rsock->sock.ops->close(&rsock->sock); | |
ffe60014 DG |
673 | } else { |
674 | /* Default call if no specific ops found. */ | |
6151a90f | 675 | ret = close(rsock->sock.fd); |
ffe60014 DG |
676 | if (ret < 0) { |
677 | PERROR("relayd_close default close"); | |
678 | } | |
679 | } | |
f96e4545 | 680 | rsock->sock.fd = -1; |
ffe60014 DG |
681 | |
682 | end: | |
683 | return ret; | |
00e2e675 DG |
684 | } |
685 | ||
686 | /* | |
687 | * Send data header structure to the relayd. | |
688 | */ | |
6151a90f | 689 | int relayd_send_data_hdr(struct lttcomm_relayd_sock *rsock, |
00e2e675 DG |
690 | struct lttcomm_relayd_data_hdr *hdr, size_t size) |
691 | { | |
692 | int ret; | |
693 | ||
694 | /* Code flow error. Safety net. */ | |
6151a90f | 695 | assert(rsock); |
00e2e675 DG |
696 | assert(hdr); |
697 | ||
f96e4545 MD |
698 | if (rsock->sock.fd < 0) { |
699 | return -ECONNRESET; | |
700 | } | |
701 | ||
8fd623e0 | 702 | DBG3("Relayd sending data header of size %zu", size); |
00e2e675 DG |
703 | |
704 | /* Again, safety net */ | |
705 | if (size == 0) { | |
706 | size = sizeof(struct lttcomm_relayd_data_hdr); | |
707 | } | |
708 | ||
709 | /* Only send data header. */ | |
6151a90f | 710 | ret = rsock->sock.ops->sendmsg(&rsock->sock, hdr, size, 0); |
00e2e675 | 711 | if (ret < 0) { |
8994307f | 712 | ret = -errno; |
00e2e675 DG |
713 | goto error; |
714 | } | |
715 | ||
716 | /* | |
717 | * The data MUST be sent right after that command for the receive on the | |
718 | * other end to match the size in the header. | |
719 | */ | |
720 | ||
721 | error: | |
722 | return ret; | |
723 | } | |
173af62f DG |
724 | |
725 | /* | |
726 | * Send close stream command to the relayd. | |
727 | */ | |
6151a90f | 728 | int relayd_send_close_stream(struct lttcomm_relayd_sock *rsock, uint64_t stream_id, |
173af62f DG |
729 | uint64_t last_net_seq_num) |
730 | { | |
731 | int ret; | |
732 | struct lttcomm_relayd_close_stream msg; | |
733 | struct lttcomm_relayd_generic_reply reply; | |
734 | ||
735 | /* Code flow error. Safety net. */ | |
6151a90f | 736 | assert(rsock); |
173af62f | 737 | |
77c7c900 | 738 | DBG("Relayd closing stream id %" PRIu64, stream_id); |
173af62f | 739 | |
53efb85a | 740 | memset(&msg, 0, sizeof(msg)); |
173af62f DG |
741 | msg.stream_id = htobe64(stream_id); |
742 | msg.last_net_seq_num = htobe64(last_net_seq_num); | |
743 | ||
744 | /* Send command */ | |
6151a90f | 745 | ret = send_command(rsock, RELAYD_CLOSE_STREAM, (void *) &msg, sizeof(msg), 0); |
173af62f DG |
746 | if (ret < 0) { |
747 | goto error; | |
748 | } | |
749 | ||
20275fe8 | 750 | /* Receive response */ |
6151a90f | 751 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
173af62f 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. */ | |
f73fabfd | 759 | if (reply.ret_code != LTTNG_OK) { |
bb63afd9 DG |
760 | ret = -1; |
761 | ERR("Relayd close stream replied error %d", reply.ret_code); | |
173af62f DG |
762 | } else { |
763 | /* Success */ | |
764 | ret = 0; | |
765 | } | |
766 | ||
77c7c900 | 767 | DBG("Relayd close stream id %" PRIu64 " successfully", stream_id); |
173af62f DG |
768 | |
769 | error: | |
770 | return ret; | |
771 | } | |
c8f59ee5 DG |
772 | |
773 | /* | |
774 | * Check for data availability for a given stream id. | |
775 | * | |
6d805429 | 776 | * Return 0 if NOT pending, 1 if so and a negative value on error. |
c8f59ee5 | 777 | */ |
6151a90f | 778 | int relayd_data_pending(struct lttcomm_relayd_sock *rsock, uint64_t stream_id, |
c8f59ee5 DG |
779 | uint64_t last_net_seq_num) |
780 | { | |
781 | int ret; | |
6d805429 | 782 | struct lttcomm_relayd_data_pending msg; |
c8f59ee5 DG |
783 | struct lttcomm_relayd_generic_reply reply; |
784 | ||
785 | /* Code flow error. Safety net. */ | |
6151a90f | 786 | assert(rsock); |
c8f59ee5 | 787 | |
6d805429 | 788 | DBG("Relayd data pending for stream id %" PRIu64, stream_id); |
c8f59ee5 | 789 | |
53efb85a | 790 | memset(&msg, 0, sizeof(msg)); |
c8f59ee5 DG |
791 | msg.stream_id = htobe64(stream_id); |
792 | msg.last_net_seq_num = htobe64(last_net_seq_num); | |
793 | ||
794 | /* Send command */ | |
6151a90f | 795 | ret = send_command(rsock, RELAYD_DATA_PENDING, (void *) &msg, |
c8f59ee5 DG |
796 | sizeof(msg), 0); |
797 | if (ret < 0) { | |
798 | goto error; | |
799 | } | |
800 | ||
20275fe8 | 801 | /* Receive response */ |
6151a90f | 802 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
c8f59ee5 DG |
803 | if (ret < 0) { |
804 | goto error; | |
805 | } | |
806 | ||
807 | reply.ret_code = be32toh(reply.ret_code); | |
808 | ||
809 | /* Return session id or negative ret code. */ | |
810 | if (reply.ret_code >= LTTNG_OK) { | |
bb63afd9 | 811 | ERR("Relayd data pending replied error %d", reply.ret_code); |
c8f59ee5 DG |
812 | } |
813 | ||
814 | /* At this point, the ret code is either 1 or 0 */ | |
815 | ret = reply.ret_code; | |
816 | ||
6d805429 | 817 | DBG("Relayd data is %s pending for stream id %" PRIu64, |
9dd26bb9 | 818 | ret == 1 ? "" : "NOT", stream_id); |
c8f59ee5 DG |
819 | |
820 | error: | |
821 | return ret; | |
822 | } | |
823 | ||
824 | /* | |
825 | * Check on the relayd side for a quiescent state on the control socket. | |
826 | */ | |
6151a90f | 827 | int relayd_quiescent_control(struct lttcomm_relayd_sock *rsock, |
ad7051c0 | 828 | uint64_t metadata_stream_id) |
c8f59ee5 DG |
829 | { |
830 | int ret; | |
ad7051c0 | 831 | struct lttcomm_relayd_quiescent_control msg; |
c8f59ee5 DG |
832 | struct lttcomm_relayd_generic_reply reply; |
833 | ||
834 | /* Code flow error. Safety net. */ | |
6151a90f | 835 | assert(rsock); |
c8f59ee5 DG |
836 | |
837 | DBG("Relayd checking quiescent control state"); | |
838 | ||
53efb85a | 839 | memset(&msg, 0, sizeof(msg)); |
ad7051c0 DG |
840 | msg.stream_id = htobe64(metadata_stream_id); |
841 | ||
c8f59ee5 | 842 | /* Send command */ |
6151a90f | 843 | ret = send_command(rsock, RELAYD_QUIESCENT_CONTROL, &msg, sizeof(msg), 0); |
c8f59ee5 DG |
844 | if (ret < 0) { |
845 | goto error; | |
846 | } | |
847 | ||
20275fe8 | 848 | /* Receive response */ |
6151a90f | 849 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
c8f59ee5 DG |
850 | if (ret < 0) { |
851 | goto error; | |
852 | } | |
853 | ||
854 | reply.ret_code = be32toh(reply.ret_code); | |
855 | ||
856 | /* Return session id or negative ret code. */ | |
857 | if (reply.ret_code != LTTNG_OK) { | |
bb63afd9 DG |
858 | ret = -1; |
859 | ERR("Relayd quiescent control replied error %d", reply.ret_code); | |
c8f59ee5 DG |
860 | goto error; |
861 | } | |
862 | ||
863 | /* Control socket is quiescent */ | |
6d805429 | 864 | return 0; |
c8f59ee5 DG |
865 | |
866 | error: | |
867 | return ret; | |
868 | } | |
f7079f67 DG |
869 | |
870 | /* | |
871 | * Begin a data pending command for a specific session id. | |
872 | */ | |
6151a90f | 873 | int relayd_begin_data_pending(struct lttcomm_relayd_sock *rsock, uint64_t id) |
f7079f67 DG |
874 | { |
875 | int ret; | |
876 | struct lttcomm_relayd_begin_data_pending msg; | |
877 | struct lttcomm_relayd_generic_reply reply; | |
878 | ||
879 | /* Code flow error. Safety net. */ | |
6151a90f | 880 | assert(rsock); |
f7079f67 DG |
881 | |
882 | DBG("Relayd begin data pending"); | |
883 | ||
53efb85a | 884 | memset(&msg, 0, sizeof(msg)); |
f7079f67 DG |
885 | msg.session_id = htobe64(id); |
886 | ||
887 | /* Send command */ | |
6151a90f | 888 | ret = send_command(rsock, RELAYD_BEGIN_DATA_PENDING, &msg, sizeof(msg), 0); |
f7079f67 DG |
889 | if (ret < 0) { |
890 | goto error; | |
891 | } | |
892 | ||
20275fe8 | 893 | /* Receive response */ |
6151a90f | 894 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
f7079f67 DG |
895 | if (ret < 0) { |
896 | goto error; | |
897 | } | |
898 | ||
899 | reply.ret_code = be32toh(reply.ret_code); | |
900 | ||
901 | /* Return session id or negative ret code. */ | |
902 | if (reply.ret_code != LTTNG_OK) { | |
bb63afd9 DG |
903 | ret = -1; |
904 | ERR("Relayd begin data pending replied error %d", reply.ret_code); | |
f7079f67 DG |
905 | goto error; |
906 | } | |
907 | ||
908 | return 0; | |
909 | ||
910 | error: | |
911 | return ret; | |
912 | } | |
913 | ||
914 | /* | |
915 | * End a data pending command for a specific session id. | |
916 | * | |
917 | * Return 0 on success and set is_data_inflight to 0 if no data is being | |
918 | * streamed or 1 if it is the case. | |
919 | */ | |
6151a90f | 920 | int relayd_end_data_pending(struct lttcomm_relayd_sock *rsock, uint64_t id, |
f7079f67 DG |
921 | unsigned int *is_data_inflight) |
922 | { | |
af6c30b5 | 923 | int ret, recv_ret; |
f7079f67 DG |
924 | struct lttcomm_relayd_end_data_pending msg; |
925 | struct lttcomm_relayd_generic_reply reply; | |
926 | ||
927 | /* Code flow error. Safety net. */ | |
6151a90f | 928 | assert(rsock); |
f7079f67 DG |
929 | |
930 | DBG("Relayd end data pending"); | |
931 | ||
53efb85a | 932 | memset(&msg, 0, sizeof(msg)); |
f7079f67 DG |
933 | msg.session_id = htobe64(id); |
934 | ||
935 | /* Send command */ | |
6151a90f | 936 | ret = send_command(rsock, RELAYD_END_DATA_PENDING, &msg, sizeof(msg), 0); |
f7079f67 DG |
937 | if (ret < 0) { |
938 | goto error; | |
939 | } | |
940 | ||
20275fe8 | 941 | /* Receive response */ |
6151a90f | 942 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
f7079f67 DG |
943 | if (ret < 0) { |
944 | goto error; | |
945 | } | |
946 | ||
af6c30b5 DG |
947 | recv_ret = be32toh(reply.ret_code); |
948 | if (recv_ret < 0) { | |
949 | ret = recv_ret; | |
f7079f67 DG |
950 | goto error; |
951 | } | |
952 | ||
af6c30b5 | 953 | *is_data_inflight = recv_ret; |
f7079f67 | 954 | |
af6c30b5 | 955 | DBG("Relayd end data pending is data inflight: %d", recv_ret); |
f7079f67 DG |
956 | |
957 | return 0; | |
958 | ||
959 | error: | |
960 | return ret; | |
961 | } | |
1c20f0e2 JD |
962 | |
963 | /* | |
964 | * Send index to the relayd. | |
965 | */ | |
966 | int relayd_send_index(struct lttcomm_relayd_sock *rsock, | |
50adc264 | 967 | struct ctf_packet_index *index, uint64_t relay_stream_id, |
1c20f0e2 JD |
968 | uint64_t net_seq_num) |
969 | { | |
970 | int ret; | |
971 | struct lttcomm_relayd_index msg; | |
972 | struct lttcomm_relayd_generic_reply reply; | |
973 | ||
974 | /* Code flow error. Safety net. */ | |
975 | assert(rsock); | |
976 | ||
977 | if (rsock->minor < 4) { | |
978 | DBG("Not sending indexes before protocol 2.4"); | |
979 | ret = 0; | |
980 | goto error; | |
981 | } | |
982 | ||
983 | DBG("Relayd sending index for stream ID %" PRIu64, relay_stream_id); | |
984 | ||
53efb85a | 985 | memset(&msg, 0, sizeof(msg)); |
1c20f0e2 JD |
986 | msg.relay_stream_id = htobe64(relay_stream_id); |
987 | msg.net_seq_num = htobe64(net_seq_num); | |
988 | ||
989 | /* The index is already in big endian. */ | |
990 | msg.packet_size = index->packet_size; | |
991 | msg.content_size = index->content_size; | |
992 | msg.timestamp_begin = index->timestamp_begin; | |
993 | msg.timestamp_end = index->timestamp_end; | |
994 | msg.events_discarded = index->events_discarded; | |
995 | msg.stream_id = index->stream_id; | |
996 | ||
234cd636 JD |
997 | if (rsock->minor >= 8) { |
998 | msg.stream_instance_id = index->stream_instance_id; | |
999 | msg.packet_seq_num = index->packet_seq_num; | |
1000 | } | |
1001 | ||
1c20f0e2 | 1002 | /* Send command */ |
f8f3885c MD |
1003 | ret = send_command(rsock, RELAYD_SEND_INDEX, &msg, |
1004 | lttcomm_relayd_index_len(lttng_to_index_major(rsock->major, | |
1005 | rsock->minor), | |
1006 | lttng_to_index_minor(rsock->major, rsock->minor)), | |
1007 | 0); | |
1c20f0e2 JD |
1008 | if (ret < 0) { |
1009 | goto error; | |
1010 | } | |
1011 | ||
1012 | /* Receive response */ | |
1013 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); | |
1014 | if (ret < 0) { | |
1015 | goto error; | |
1016 | } | |
1017 | ||
1018 | reply.ret_code = be32toh(reply.ret_code); | |
1019 | ||
1020 | /* Return session id or negative ret code. */ | |
1021 | if (reply.ret_code != LTTNG_OK) { | |
1022 | ret = -1; | |
1023 | ERR("Relayd send index replied error %d", reply.ret_code); | |
1024 | } else { | |
1025 | /* Success */ | |
1026 | ret = 0; | |
1027 | } | |
1028 | ||
1029 | error: | |
1030 | return ret; | |
1031 | } | |
93ec662e JD |
1032 | |
1033 | /* | |
1034 | * Ask the relay to reset the metadata trace file (regeneration). | |
1035 | */ | |
1036 | int relayd_reset_metadata(struct lttcomm_relayd_sock *rsock, | |
1037 | uint64_t stream_id, uint64_t version) | |
1038 | { | |
1039 | int ret; | |
1040 | struct lttcomm_relayd_reset_metadata msg; | |
1041 | struct lttcomm_relayd_generic_reply reply; | |
1042 | ||
1043 | /* Code flow error. Safety net. */ | |
1044 | assert(rsock); | |
1045 | ||
1046 | /* Should have been prevented by the sessiond. */ | |
1047 | if (rsock->minor < 8) { | |
1048 | ERR("Metadata regeneration unsupported before 2.8"); | |
1049 | ret = -1; | |
1050 | goto error; | |
1051 | } | |
1052 | ||
1053 | DBG("Relayd reset metadata stream id %" PRIu64, stream_id); | |
1054 | ||
1055 | memset(&msg, 0, sizeof(msg)); | |
1056 | msg.stream_id = htobe64(stream_id); | |
1057 | msg.version = htobe64(version); | |
1058 | ||
1059 | /* Send command */ | |
1060 | ret = send_command(rsock, RELAYD_RESET_METADATA, (void *) &msg, sizeof(msg), 0); | |
1061 | if (ret < 0) { | |
1062 | goto error; | |
1063 | } | |
1064 | ||
1065 | /* Receive response */ | |
1066 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); | |
1067 | if (ret < 0) { | |
1068 | goto error; | |
1069 | } | |
1070 | ||
1071 | reply.ret_code = be32toh(reply.ret_code); | |
1072 | ||
1073 | /* Return session id or negative ret code. */ | |
1074 | if (reply.ret_code != LTTNG_OK) { | |
1075 | ret = -1; | |
1076 | ERR("Relayd reset metadata replied error %d", reply.ret_code); | |
1077 | } else { | |
1078 | /* Success */ | |
1079 | ret = 0; | |
1080 | } | |
1081 | ||
1082 | DBG("Relayd reset metadata stream id %" PRIu64 " successfully", stream_id); | |
1083 | ||
1084 | error: | |
1085 | return ret; | |
1086 | } | |
a1ae2ea5 | 1087 | |
d73bf3d7 JD |
1088 | int relayd_rotate_stream(struct lttcomm_relayd_sock *rsock, uint64_t stream_id, |
1089 | const char *new_pathname, uint64_t new_chunk_id, | |
1090 | uint64_t seq_num) | |
1091 | { | |
1092 | int ret; | |
1093 | struct lttcomm_relayd_rotate_stream *msg = NULL; | |
1094 | struct lttcomm_relayd_generic_reply reply; | |
1095 | size_t len; | |
1096 | int msg_len; | |
1097 | ||
1098 | /* Code flow error. Safety net. */ | |
1099 | assert(rsock); | |
1100 | ||
1101 | DBG("Sending rotate stream id %" PRIu64 " command to relayd", stream_id); | |
1102 | ||
1103 | /* Account for the trailing NULL. */ | |
1104 | len = strnlen(new_pathname, LTTNG_PATH_MAX) + 1; | |
1105 | if (len > LTTNG_PATH_MAX) { | |
1106 | ERR("Path used in relayd rotate stream command exceeds the maximal allowed length"); | |
1107 | ret = -1; | |
1108 | goto error; | |
1109 | } | |
1110 | ||
1111 | msg_len = offsetof(struct lttcomm_relayd_rotate_stream, new_pathname) + len; | |
1112 | msg = zmalloc(msg_len); | |
1113 | if (!msg) { | |
1114 | PERROR("Failed to allocate relayd rotate stream command of %d bytes", | |
1115 | msg_len); | |
1116 | ret = -1; | |
1117 | goto error; | |
1118 | } | |
1119 | ||
1120 | if (lttng_strncpy(msg->new_pathname, new_pathname, len)) { | |
1121 | ret = -1; | |
1122 | ERR("Failed to copy relayd rotate stream command's new path name"); | |
1123 | goto error; | |
1124 | } | |
1125 | ||
1126 | msg->pathname_length = htobe32(len); | |
1127 | msg->stream_id = htobe64(stream_id); | |
1128 | msg->new_chunk_id = htobe64(new_chunk_id); | |
1129 | /* | |
1130 | * The seq_num is invalid for metadata streams, but it is ignored on | |
1131 | * the relay. | |
1132 | */ | |
1133 | msg->rotate_at_seq_num = htobe64(seq_num); | |
1134 | ||
1135 | /* Send command. */ | |
1136 | ret = send_command(rsock, RELAYD_ROTATE_STREAM, (void *) msg, msg_len, 0); | |
1137 | if (ret < 0) { | |
1138 | ERR("Send rotate command"); | |
1139 | goto error; | |
1140 | } | |
1141 | ||
1142 | /* Receive response. */ | |
1143 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); | |
1144 | if (ret < 0) { | |
1145 | ERR("Receive rotate reply"); | |
1146 | goto error; | |
1147 | } | |
1148 | ||
1149 | reply.ret_code = be32toh(reply.ret_code); | |
1150 | ||
1151 | /* Return session id or negative ret code. */ | |
1152 | if (reply.ret_code != LTTNG_OK) { | |
1153 | ret = -1; | |
1154 | ERR("Relayd rotate stream replied error %d", reply.ret_code); | |
1155 | } else { | |
1156 | /* Success. */ | |
1157 | ret = 0; | |
1158 | DBG("Relayd rotated stream id %" PRIu64 " successfully", stream_id); | |
1159 | } | |
1160 | ||
1161 | error: | |
1162 | free(msg); | |
1163 | return ret; | |
1164 | } | |
1165 | ||
00fb02ac JD |
1166 | int relayd_rotate_rename(struct lttcomm_relayd_sock *rsock, |
1167 | const char *old_path, const char *new_path) | |
1168 | { | |
1169 | int ret; | |
1170 | struct lttcomm_relayd_rotate_rename *msg = NULL; | |
1171 | struct lttcomm_relayd_generic_reply reply; | |
1172 | size_t old_path_length, new_path_length; | |
1173 | size_t msg_length; | |
1174 | ||
1175 | /* Code flow error. Safety net. */ | |
1176 | assert(rsock); | |
1177 | ||
1178 | DBG("Relayd rename chunk %s to %s", old_path, new_path); | |
1179 | ||
1180 | /* The two paths are sent with a '\0' delimiter between them. */ | |
1181 | old_path_length = strlen(old_path) + 1; | |
1182 | new_path_length = strlen(new_path) + 1; | |
1183 | ||
1184 | msg_length = sizeof(*msg) + old_path_length + new_path_length; | |
1185 | msg = zmalloc(msg_length); | |
1186 | if (!msg) { | |
1187 | PERROR("zmalloc rotate-rename command message"); | |
1188 | ret = -1; | |
1189 | goto error; | |
1190 | } | |
1191 | ||
1192 | assert(old_path_length <= UINT32_MAX); | |
1193 | msg->old_path_length = htobe32(old_path_length); | |
1194 | ||
1195 | assert(new_path_length <= UINT32_MAX); | |
1196 | msg->new_path_length = htobe32(new_path_length); | |
1197 | ||
1198 | strcpy(msg->paths, old_path); | |
1199 | strcpy(msg->paths + old_path_length, new_path); | |
1200 | ||
1201 | /* Send command */ | |
1202 | ret = send_command(rsock, RELAYD_ROTATE_RENAME, (const void *) msg, | |
1203 | msg_length, 0); | |
1204 | if (ret < 0) { | |
1205 | goto error; | |
1206 | } | |
1207 | ||
1208 | /* Receive response */ | |
1209 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); | |
1210 | if (ret < 0) { | |
1211 | goto error; | |
1212 | } | |
1213 | ||
1214 | reply.ret_code = be32toh(reply.ret_code); | |
1215 | ||
1216 | /* Return session id or negative ret code. */ | |
1217 | if (reply.ret_code != LTTNG_OK) { | |
1218 | ret = -1; | |
1219 | ERR("Relayd rotate rename replied error %d", reply.ret_code); | |
1220 | } else { | |
1221 | /* Success */ | |
1222 | ret = 0; | |
1223 | } | |
1224 | ||
1225 | DBG("Relayd rotate rename completed successfully"); | |
1226 | ||
1227 | error: | |
1228 | free(msg); | |
1229 | return ret; | |
1230 | } | |
1231 | ||
d88744a4 JD |
1232 | int relayd_rotate_pending(struct lttcomm_relayd_sock *rsock, uint64_t chunk_id) |
1233 | { | |
1234 | int ret; | |
1235 | struct lttcomm_relayd_rotate_pending msg; | |
1236 | struct lttcomm_relayd_rotate_pending_reply reply; | |
1237 | ||
1238 | /* Code flow error. Safety net. */ | |
1239 | assert(rsock); | |
1240 | ||
1241 | DBG("Querying relayd for rotate pending with chunk_id %" PRIu64, | |
1242 | chunk_id); | |
1243 | ||
1244 | memset(&msg, 0, sizeof(msg)); | |
1245 | msg.chunk_id = htobe64(chunk_id); | |
1246 | ||
1247 | /* Send command */ | |
1248 | ret = send_command(rsock, RELAYD_ROTATE_PENDING, (void *) &msg, | |
1249 | sizeof(msg), 0); | |
1250 | if (ret < 0) { | |
1251 | goto error; | |
1252 | } | |
1253 | ||
1254 | /* Receive response */ | |
1255 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); | |
1256 | if (ret < 0) { | |
1257 | goto error; | |
1258 | } | |
1259 | ||
1260 | reply.generic.ret_code = be32toh(reply.generic.ret_code); | |
1261 | ||
1262 | /* Return session id or negative ret code. */ | |
1263 | if (reply.generic.ret_code != LTTNG_OK) { | |
1264 | ret = -reply.generic.ret_code; | |
1265 | ERR("Relayd rotate pending replied with error %d", ret); | |
1266 | goto error; | |
1267 | } else { | |
1268 | /* No error, just rotate pending state */ | |
1269 | if (reply.is_pending == 0 || reply.is_pending == 1) { | |
1270 | ret = reply.is_pending; | |
1271 | DBG("Relayd rotate pending command completed successfully with result \"%s\"", | |
1272 | ret ? "rotation pending" : "rotation NOT pending"); | |
1273 | } else { | |
1274 | ret = -LTTNG_ERR_UNK; | |
1275 | } | |
1276 | } | |
1277 | ||
1278 | error: | |
1279 | return ret; | |
1280 | } | |
1281 | ||
a1ae2ea5 JD |
1282 | int relayd_mkdir(struct lttcomm_relayd_sock *rsock, const char *path) |
1283 | { | |
1284 | int ret; | |
1285 | struct lttcomm_relayd_mkdir *msg; | |
1286 | struct lttcomm_relayd_generic_reply reply; | |
1287 | size_t len; | |
1288 | ||
1289 | /* Code flow error. Safety net. */ | |
1290 | assert(rsock); | |
1291 | ||
1292 | DBG("Relayd mkdir path %s", path); | |
1293 | ||
1294 | len = strlen(path) + 1; | |
1295 | msg = zmalloc(sizeof(msg->length) + len); | |
1296 | if (!msg) { | |
1297 | PERROR("Alloc mkdir msg"); | |
1298 | ret = -1; | |
1299 | goto error; | |
1300 | } | |
1301 | msg->length = htobe32((uint32_t) len); | |
1302 | ||
1303 | if (lttng_strncpy(msg->path, path, len)) { | |
1304 | ret = -1; | |
1305 | goto error; | |
1306 | } | |
1307 | ||
1308 | /* Send command */ | |
1309 | ret = send_command(rsock, RELAYD_MKDIR, (void *) msg, | |
1310 | sizeof(msg->length) + len, 0); | |
1311 | if (ret < 0) { | |
1312 | goto error; | |
1313 | } | |
1314 | ||
1315 | /* Receive response */ | |
1316 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); | |
1317 | if (ret < 0) { | |
1318 | goto error; | |
1319 | } | |
1320 | ||
1321 | reply.ret_code = be32toh(reply.ret_code); | |
1322 | ||
1323 | /* Return session id or negative ret code. */ | |
1324 | if (reply.ret_code != LTTNG_OK) { | |
1325 | ret = -1; | |
1326 | ERR("Relayd mkdir replied error %d", reply.ret_code); | |
1327 | } else { | |
1328 | /* Success */ | |
1329 | ret = 0; | |
1330 | } | |
1331 | ||
1332 | DBG("Relayd mkdir completed successfully"); | |
1333 | ||
1334 | error: | |
1335 | free(msg); | |
1336 | return ret; | |
a1ae2ea5 | 1337 | } |