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> |
00e2e675 DG |
32 | |
33 | #include "relayd.h" | |
34 | ||
35 | /* | |
36 | * Send command. Fill up the header and append the data. | |
37 | */ | |
6151a90f | 38 | static int send_command(struct lttcomm_relayd_sock *rsock, |
76b9afaa | 39 | enum lttcomm_relayd_command cmd, const void *data, size_t size, |
00e2e675 DG |
40 | int flags) |
41 | { | |
42 | int ret; | |
43 | struct lttcomm_relayd_hdr header; | |
44 | char *buf; | |
45 | uint64_t buf_size = sizeof(header); | |
46 | ||
f96e4545 MD |
47 | if (rsock->sock.fd < 0) { |
48 | return -ECONNRESET; | |
49 | } | |
50 | ||
00e2e675 DG |
51 | if (data) { |
52 | buf_size += size; | |
53 | } | |
54 | ||
55 | buf = zmalloc(buf_size); | |
56 | if (buf == NULL) { | |
57 | PERROR("zmalloc relayd send command buf"); | |
58 | ret = -1; | |
59 | goto alloc_error; | |
60 | } | |
61 | ||
53efb85a | 62 | memset(&header, 0, sizeof(header)); |
00e2e675 DG |
63 | header.cmd = htobe32(cmd); |
64 | header.data_size = htobe64(size); | |
65 | ||
66 | /* Zeroed for now since not used. */ | |
67 | header.cmd_version = 0; | |
68 | header.circuit_id = 0; | |
69 | ||
70 | /* Prepare buffer to send. */ | |
71 | memcpy(buf, &header, sizeof(header)); | |
72 | if (data) { | |
73 | memcpy(buf + sizeof(header), data, size); | |
74 | } | |
75 | ||
06586bbe | 76 | DBG3("Relayd sending command %d of size %" PRIu64, (int) cmd, buf_size); |
6151a90f | 77 | ret = rsock->sock.ops->sendmsg(&rsock->sock, buf, buf_size, flags); |
00e2e675 | 78 | if (ret < 0) { |
06586bbe JG |
79 | PERROR("Failed to send command %d of size %" PRIu64, |
80 | (int) cmd, buf_size); | |
8994307f | 81 | ret = -errno; |
00e2e675 DG |
82 | goto error; |
83 | } | |
00e2e675 DG |
84 | error: |
85 | free(buf); | |
86 | alloc_error: | |
87 | return ret; | |
88 | } | |
89 | ||
90 | /* | |
91 | * Receive reply data on socket. This MUST be call after send_command or else | |
92 | * could result in unexpected behavior(s). | |
93 | */ | |
6151a90f | 94 | static int recv_reply(struct lttcomm_relayd_sock *rsock, void *data, size_t size) |
00e2e675 DG |
95 | { |
96 | int ret; | |
97 | ||
f96e4545 MD |
98 | if (rsock->sock.fd < 0) { |
99 | return -ECONNRESET; | |
100 | } | |
101 | ||
8fd623e0 | 102 | DBG3("Relayd waiting for reply of size %zu", size); |
00e2e675 | 103 | |
6151a90f | 104 | ret = rsock->sock.ops->recvmsg(&rsock->sock, data, size, 0); |
20275fe8 DG |
105 | if (ret <= 0 || ret != size) { |
106 | if (ret == 0) { | |
107 | /* Orderly shutdown. */ | |
6151a90f | 108 | DBG("Socket %d has performed an orderly shutdown", rsock->sock.fd); |
20275fe8 | 109 | } else { |
8fd623e0 | 110 | DBG("Receiving reply failed on sock %d for size %zu with ret %d", |
6151a90f | 111 | rsock->sock.fd, size, ret); |
20275fe8 DG |
112 | } |
113 | /* Always return -1 here and the caller can use errno. */ | |
114 | ret = -1; | |
00e2e675 DG |
115 | goto error; |
116 | } | |
117 | ||
118 | error: | |
119 | return ret; | |
120 | } | |
121 | ||
d3e2ba59 | 122 | /* |
f86f6389 JR |
123 | * Starting from 2.11, RELAYD_CREATE_SESSION payload (session_name & hostname) |
124 | * have no length restriction on the sender side. | |
125 | * Length for both payloads is stored in the msg struct. A new dynamic size | |
126 | * payload size is introduced. | |
127 | */ | |
128 | static int relayd_create_session_2_11(struct lttcomm_relayd_sock *rsock, | |
129 | char *session_name, char *hostname, | |
130 | int session_live_timer, unsigned int snapshot) | |
131 | { | |
132 | int ret; | |
133 | struct lttcomm_relayd_create_session_2_11 *msg = NULL; | |
134 | size_t session_name_len; | |
135 | size_t hostname_len; | |
136 | size_t msg_length; | |
137 | ||
138 | /* The two names are sent with a '\0' delimiter between them. */ | |
139 | session_name_len = strlen(session_name) + 1; | |
140 | hostname_len = strlen(hostname) + 1; | |
141 | ||
142 | msg_length = sizeof(*msg) + session_name_len + hostname_len; | |
143 | msg = zmalloc(msg_length); | |
144 | if (!msg) { | |
145 | PERROR("zmalloc create_session_2_11 command message"); | |
146 | ret = -1; | |
147 | goto error; | |
148 | } | |
149 | ||
150 | assert(session_name_len <= UINT32_MAX); | |
151 | msg->session_name_len = htobe32(session_name_len); | |
152 | ||
153 | assert(hostname_len <= UINT32_MAX); | |
154 | msg->hostname_len = htobe32(hostname_len); | |
155 | ||
156 | if (lttng_strncpy(msg->names, session_name, session_name_len)) { | |
157 | ret = -1; | |
158 | goto error; | |
159 | } | |
160 | if (lttng_strncpy(msg->names + session_name_len, hostname, hostname_len)) { | |
161 | ret = -1; | |
162 | goto error; | |
163 | } | |
164 | ||
165 | msg->live_timer = htobe32(session_live_timer); | |
166 | msg->snapshot = !!snapshot; | |
167 | ||
168 | /* Send command */ | |
169 | ret = send_command(rsock, RELAYD_CREATE_SESSION, msg, msg_length, 0); | |
170 | if (ret < 0) { | |
171 | goto error; | |
172 | } | |
173 | error: | |
174 | free(msg); | |
175 | return ret; | |
176 | } | |
177 | /* | |
178 | * From 2.4 to 2.10, RELAYD_CREATE_SESSION takes additional parameters to | |
d3e2ba59 JD |
179 | * support the live reading capability. |
180 | */ | |
181 | static int relayd_create_session_2_4(struct lttcomm_relayd_sock *rsock, | |
42e9a27b JR |
182 | char *session_name, char *hostname, int session_live_timer, |
183 | unsigned int snapshot) | |
d3e2ba59 JD |
184 | { |
185 | int ret; | |
186 | struct lttcomm_relayd_create_session_2_4 msg; | |
187 | ||
3a13ffd5 MD |
188 | if (lttng_strncpy(msg.session_name, session_name, |
189 | sizeof(msg.session_name))) { | |
246777db MD |
190 | ret = -1; |
191 | goto error; | |
192 | } | |
3a13ffd5 | 193 | if (lttng_strncpy(msg.hostname, hostname, sizeof(msg.hostname))) { |
246777db MD |
194 | ret = -1; |
195 | goto error; | |
196 | } | |
d3e2ba59 | 197 | msg.live_timer = htobe32(session_live_timer); |
7d2f7452 | 198 | msg.snapshot = htobe32(snapshot); |
d3e2ba59 JD |
199 | |
200 | /* Send command */ | |
201 | ret = send_command(rsock, RELAYD_CREATE_SESSION, &msg, sizeof(msg), 0); | |
202 | if (ret < 0) { | |
203 | goto error; | |
204 | } | |
205 | ||
206 | error: | |
207 | return ret; | |
208 | } | |
209 | ||
210 | /* | |
211 | * RELAYD_CREATE_SESSION from 2.1 to 2.3. | |
212 | */ | |
42e9a27b | 213 | static int relayd_create_session_2_1(struct lttcomm_relayd_sock *rsock) |
d3e2ba59 JD |
214 | { |
215 | int ret; | |
216 | ||
217 | /* Send command */ | |
218 | ret = send_command(rsock, RELAYD_CREATE_SESSION, NULL, 0, 0); | |
219 | if (ret < 0) { | |
220 | goto error; | |
221 | } | |
222 | ||
223 | error: | |
224 | return ret; | |
225 | } | |
226 | ||
c5b6f4f0 DG |
227 | /* |
228 | * Send a RELAYD_CREATE_SESSION command to the relayd with the given socket and | |
229 | * set session_id of the relayd if we have a successful reply from the relayd. | |
230 | * | |
20275fe8 DG |
231 | * On success, return 0 else a negative value which is either an errno error or |
232 | * a lttng error code from the relayd. | |
c5b6f4f0 | 233 | */ |
d3e2ba59 | 234 | int relayd_create_session(struct lttcomm_relayd_sock *rsock, uint64_t *session_id, |
7d2f7452 DG |
235 | char *session_name, char *hostname, int session_live_timer, |
236 | unsigned int snapshot) | |
c5b6f4f0 DG |
237 | { |
238 | int ret; | |
239 | struct lttcomm_relayd_status_session reply; | |
240 | ||
6151a90f | 241 | assert(rsock); |
c5b6f4f0 DG |
242 | assert(session_id); |
243 | ||
244 | DBG("Relayd create session"); | |
245 | ||
f86f6389 JR |
246 | if (rsock->minor < 4) { |
247 | /* From 2.1 to 2.3 */ | |
248 | ret = relayd_create_session_2_1(rsock); | |
249 | } else if (rsock->minor >= 4 && rsock->minor < 11) { | |
250 | /* From 2.4 to 2.10 */ | |
251 | ret = relayd_create_session_2_4(rsock, session_name, | |
252 | hostname, session_live_timer, snapshot); | |
253 | } else { | |
254 | /* From 2.11 to ... */ | |
255 | ret = relayd_create_session_2_11(rsock, session_name, | |
256 | hostname, session_live_timer, snapshot); | |
d3e2ba59 JD |
257 | } |
258 | ||
c5b6f4f0 DG |
259 | if (ret < 0) { |
260 | goto error; | |
261 | } | |
262 | ||
20275fe8 | 263 | /* Receive response */ |
6151a90f | 264 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
c5b6f4f0 DG |
265 | if (ret < 0) { |
266 | goto error; | |
267 | } | |
268 | ||
269 | reply.session_id = be64toh(reply.session_id); | |
270 | reply.ret_code = be32toh(reply.ret_code); | |
271 | ||
272 | /* Return session id or negative ret code. */ | |
273 | if (reply.ret_code != LTTNG_OK) { | |
bb63afd9 DG |
274 | ret = -1; |
275 | ERR("Relayd create session replied error %d", reply.ret_code); | |
c5b6f4f0 DG |
276 | goto error; |
277 | } else { | |
278 | ret = 0; | |
279 | *session_id = reply.session_id; | |
280 | } | |
281 | ||
282 | DBG("Relayd session created with id %" PRIu64, reply.session_id); | |
283 | ||
284 | error: | |
285 | return ret; | |
286 | } | |
287 | ||
2f21a469 JR |
288 | static int relayd_add_stream_2_1(struct lttcomm_relayd_sock *rsock, |
289 | const char *channel_name, const char *pathname) | |
290 | { | |
291 | int ret; | |
292 | struct lttcomm_relayd_add_stream msg; | |
293 | ||
294 | memset(&msg, 0, sizeof(msg)); | |
295 | if (lttng_strncpy(msg.channel_name, channel_name, | |
296 | sizeof(msg.channel_name))) { | |
297 | ret = -1; | |
298 | goto error; | |
299 | } | |
300 | ||
301 | if (lttng_strncpy(msg.pathname, pathname, | |
302 | sizeof(msg.pathname))) { | |
303 | ret = -1; | |
304 | goto error; | |
305 | } | |
306 | ||
307 | /* Send command */ | |
308 | ret = send_command(rsock, RELAYD_ADD_STREAM, (void *) &msg, sizeof(msg), 0); | |
309 | if (ret < 0) { | |
310 | ret = -1; | |
311 | goto error; | |
312 | } | |
313 | ret = 0; | |
314 | error: | |
315 | return ret; | |
316 | } | |
317 | ||
318 | static int relayd_add_stream_2_2(struct lttcomm_relayd_sock *rsock, | |
319 | const char *channel_name, const char *pathname, | |
320 | uint64_t tracefile_size, uint64_t tracefile_count) | |
321 | { | |
322 | int ret; | |
323 | struct lttcomm_relayd_add_stream_2_2 msg; | |
324 | ||
325 | memset(&msg, 0, sizeof(msg)); | |
326 | /* Compat with relayd 2.2 to 2.10 */ | |
327 | if (lttng_strncpy(msg.channel_name, channel_name, | |
328 | sizeof(msg.channel_name))) { | |
329 | ret = -1; | |
330 | goto error; | |
331 | } | |
332 | if (lttng_strncpy(msg.pathname, pathname, | |
333 | sizeof(msg.pathname))) { | |
334 | ret = -1; | |
335 | goto error; | |
336 | } | |
337 | msg.tracefile_size = htobe64(tracefile_size); | |
338 | msg.tracefile_count = htobe64(tracefile_count); | |
339 | ||
340 | /* Send command */ | |
341 | ret = send_command(rsock, RELAYD_ADD_STREAM, (void *) &msg, sizeof(msg), 0); | |
342 | if (ret < 0) { | |
343 | goto error; | |
344 | } | |
345 | ret = 0; | |
346 | error: | |
347 | return ret; | |
348 | } | |
349 | ||
350 | static int relayd_add_stream_2_11(struct lttcomm_relayd_sock *rsock, | |
351 | const char *channel_name, const char *pathname, | |
b00e554e JG |
352 | uint64_t tracefile_size, uint64_t tracefile_count, |
353 | uint64_t trace_archive_id) | |
2f21a469 JR |
354 | { |
355 | int ret; | |
356 | struct lttcomm_relayd_add_stream_2_11 *msg = NULL; | |
357 | size_t channel_name_len; | |
358 | size_t pathname_len; | |
359 | size_t msg_length; | |
360 | ||
361 | /* The two names are sent with a '\0' delimiter between them. */ | |
362 | channel_name_len = strlen(channel_name) + 1; | |
363 | pathname_len = strlen(pathname) + 1; | |
364 | ||
365 | msg_length = sizeof(*msg) + channel_name_len + pathname_len; | |
366 | msg = zmalloc(msg_length); | |
367 | if (!msg) { | |
368 | PERROR("zmalloc add_stream_2_11 command message"); | |
369 | ret = -1; | |
370 | goto error; | |
371 | } | |
372 | ||
373 | assert(channel_name_len <= UINT32_MAX); | |
374 | msg->channel_name_len = htobe32(channel_name_len); | |
375 | ||
376 | assert(pathname_len <= UINT32_MAX); | |
377 | msg->pathname_len = htobe32(pathname_len); | |
378 | ||
379 | if (lttng_strncpy(msg->names, channel_name, channel_name_len)) { | |
380 | ret = -1; | |
381 | goto error; | |
382 | } | |
383 | if (lttng_strncpy(msg->names + channel_name_len, pathname, pathname_len)) { | |
384 | ret = -1; | |
385 | goto error; | |
386 | } | |
387 | ||
388 | msg->tracefile_size = htobe64(tracefile_size); | |
389 | msg->tracefile_count = htobe64(tracefile_count); | |
b00e554e | 390 | msg->trace_archive_id = htobe64(trace_archive_id); |
2f21a469 JR |
391 | |
392 | /* Send command */ | |
393 | ret = send_command(rsock, RELAYD_ADD_STREAM, (void *) msg, msg_length, 0); | |
394 | if (ret < 0) { | |
395 | goto error; | |
396 | } | |
397 | ret = 0; | |
398 | error: | |
399 | free(msg); | |
400 | return ret; | |
401 | } | |
402 | ||
00e2e675 DG |
403 | /* |
404 | * Add stream on the relayd and assign stream handle to the stream_id argument. | |
405 | * | |
406 | * On success return 0 else return ret_code negative value. | |
407 | */ | |
6151a90f | 408 | int relayd_add_stream(struct lttcomm_relayd_sock *rsock, const char *channel_name, |
0f907de1 | 409 | const char *pathname, uint64_t *stream_id, |
0b50e4b3 JG |
410 | uint64_t tracefile_size, uint64_t tracefile_count, |
411 | uint64_t trace_archive_id) | |
00e2e675 DG |
412 | { |
413 | int ret; | |
00e2e675 DG |
414 | struct lttcomm_relayd_status_stream reply; |
415 | ||
416 | /* Code flow error. Safety net. */ | |
6151a90f | 417 | assert(rsock); |
00e2e675 DG |
418 | assert(channel_name); |
419 | assert(pathname); | |
420 | ||
421 | DBG("Relayd adding stream for channel name %s", channel_name); | |
422 | ||
0f907de1 JD |
423 | /* Compat with relayd 2.1 */ |
424 | if (rsock->minor == 1) { | |
2f21a469 JR |
425 | /* For 2.1 */ |
426 | ret = relayd_add_stream_2_1(rsock, channel_name, pathname); | |
427 | ||
428 | } else if (rsock->minor > 1 && rsock->minor < 11) { | |
429 | /* From 2.2 to 2.10 */ | |
430 | ret = relayd_add_stream_2_2(rsock, channel_name, pathname, | |
431 | tracefile_size, tracefile_count); | |
0f907de1 | 432 | } else { |
2f21a469 JR |
433 | /* From 2.11 to ...*/ |
434 | ret = relayd_add_stream_2_11(rsock, channel_name, pathname, | |
b00e554e JG |
435 | tracefile_size, tracefile_count, |
436 | trace_archive_id); | |
2f21a469 | 437 | } |
0f907de1 | 438 | |
2f21a469 JR |
439 | if (ret) { |
440 | ret = -1; | |
441 | goto error; | |
00e2e675 DG |
442 | } |
443 | ||
633d0084 | 444 | /* Waiting for reply */ |
6151a90f | 445 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
00e2e675 DG |
446 | if (ret < 0) { |
447 | goto error; | |
448 | } | |
449 | ||
450 | /* Back to host bytes order. */ | |
451 | reply.handle = be64toh(reply.handle); | |
452 | reply.ret_code = be32toh(reply.ret_code); | |
453 | ||
454 | /* Return session id or negative ret code. */ | |
f73fabfd | 455 | if (reply.ret_code != LTTNG_OK) { |
bb63afd9 DG |
456 | ret = -1; |
457 | ERR("Relayd add stream replied error %d", reply.ret_code); | |
00e2e675 DG |
458 | } else { |
459 | /* Success */ | |
460 | ret = 0; | |
461 | *stream_id = reply.handle; | |
462 | } | |
463 | ||
77c7c900 | 464 | DBG("Relayd stream added successfully with handle %" PRIu64, |
2f21a469 | 465 | reply.handle); |
00e2e675 DG |
466 | |
467 | error: | |
468 | return ret; | |
469 | } | |
470 | ||
a4baae1b JD |
471 | /* |
472 | * Inform the relay that all the streams for the current channel has been sent. | |
473 | * | |
474 | * On success return 0 else return ret_code negative value. | |
475 | */ | |
476 | int relayd_streams_sent(struct lttcomm_relayd_sock *rsock) | |
477 | { | |
478 | int ret; | |
479 | struct lttcomm_relayd_generic_reply reply; | |
480 | ||
481 | /* Code flow error. Safety net. */ | |
482 | assert(rsock); | |
483 | ||
484 | DBG("Relayd sending streams sent."); | |
485 | ||
486 | /* This feature was introduced in 2.4, ignore it for earlier versions. */ | |
487 | if (rsock->minor < 4) { | |
488 | ret = 0; | |
489 | goto end; | |
490 | } | |
491 | ||
492 | /* Send command */ | |
493 | ret = send_command(rsock, RELAYD_STREAMS_SENT, NULL, 0, 0); | |
494 | if (ret < 0) { | |
495 | goto error; | |
496 | } | |
497 | ||
498 | /* Waiting for reply */ | |
499 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); | |
500 | if (ret < 0) { | |
501 | goto error; | |
502 | } | |
503 | ||
504 | /* Back to host bytes order. */ | |
505 | reply.ret_code = be32toh(reply.ret_code); | |
506 | ||
507 | /* Return session id or negative ret code. */ | |
508 | if (reply.ret_code != LTTNG_OK) { | |
509 | ret = -1; | |
510 | ERR("Relayd streams sent replied error %d", reply.ret_code); | |
511 | goto error; | |
512 | } else { | |
513 | /* Success */ | |
514 | ret = 0; | |
515 | } | |
516 | ||
517 | DBG("Relayd streams sent success"); | |
518 | ||
519 | error: | |
520 | end: | |
521 | return ret; | |
522 | } | |
523 | ||
00e2e675 DG |
524 | /* |
525 | * Check version numbers on the relayd. | |
d4519fa3 JD |
526 | * If major versions are compatible, we assign minor_to_use to the |
527 | * minor version of the procotol we are going to use for this session. | |
00e2e675 | 528 | * |
67d5aa28 JD |
529 | * Return 0 if the two daemons are compatible, LTTNG_ERR_RELAYD_VERSION_FAIL |
530 | * otherwise, or a negative value on network errors. | |
00e2e675 | 531 | */ |
6151a90f | 532 | int relayd_version_check(struct lttcomm_relayd_sock *rsock) |
00e2e675 DG |
533 | { |
534 | int ret; | |
092b6259 | 535 | struct lttcomm_relayd_version msg; |
00e2e675 DG |
536 | |
537 | /* Code flow error. Safety net. */ | |
6151a90f | 538 | assert(rsock); |
00e2e675 | 539 | |
6151a90f JD |
540 | DBG("Relayd version check for major.minor %u.%u", rsock->major, |
541 | rsock->minor); | |
00e2e675 | 542 | |
53efb85a | 543 | memset(&msg, 0, sizeof(msg)); |
092b6259 | 544 | /* Prepare network byte order before transmission. */ |
6151a90f JD |
545 | msg.major = htobe32(rsock->major); |
546 | msg.minor = htobe32(rsock->minor); | |
092b6259 | 547 | |
00e2e675 | 548 | /* Send command */ |
6151a90f | 549 | ret = send_command(rsock, RELAYD_VERSION, (void *) &msg, sizeof(msg), 0); |
00e2e675 DG |
550 | if (ret < 0) { |
551 | goto error; | |
552 | } | |
553 | ||
20275fe8 | 554 | /* Receive response */ |
6151a90f | 555 | ret = recv_reply(rsock, (void *) &msg, sizeof(msg)); |
00e2e675 DG |
556 | if (ret < 0) { |
557 | goto error; | |
558 | } | |
559 | ||
560 | /* Set back to host bytes order */ | |
092b6259 DG |
561 | msg.major = be32toh(msg.major); |
562 | msg.minor = be32toh(msg.minor); | |
563 | ||
564 | /* | |
565 | * Only validate the major version. If the other side is higher, | |
566 | * communication is not possible. Only major version equal can talk to each | |
567 | * other. If the minor version differs, the lowest version is used by both | |
568 | * sides. | |
092b6259 | 569 | */ |
6151a90f | 570 | if (msg.major != rsock->major) { |
d4519fa3 | 571 | /* Not compatible */ |
67d5aa28 | 572 | ret = LTTNG_ERR_RELAYD_VERSION_FAIL; |
d4519fa3 | 573 | DBG2("Relayd version is NOT compatible. Relayd version %u != %u (us)", |
6151a90f | 574 | msg.major, rsock->major); |
092b6259 | 575 | goto error; |
00e2e675 DG |
576 | } |
577 | ||
092b6259 | 578 | /* |
6151a90f JD |
579 | * If the relayd's minor version is higher, it will adapt to our version so |
580 | * we can continue to use the latest relayd communication data structure. | |
581 | * If the received minor version is higher, the relayd should adapt to us. | |
092b6259 | 582 | */ |
6151a90f JD |
583 | if (rsock->minor > msg.minor) { |
584 | rsock->minor = msg.minor; | |
d4519fa3 | 585 | } |
092b6259 | 586 | |
d4519fa3 JD |
587 | /* Version number compatible */ |
588 | DBG2("Relayd version is compatible, using protocol version %u.%u", | |
6151a90f | 589 | rsock->major, rsock->minor); |
d4519fa3 | 590 | ret = 0; |
00e2e675 DG |
591 | |
592 | error: | |
593 | return ret; | |
594 | } | |
595 | ||
00e2e675 DG |
596 | /* |
597 | * Add stream on the relayd and assign stream handle to the stream_id argument. | |
598 | * | |
599 | * On success return 0 else return ret_code negative value. | |
600 | */ | |
6151a90f | 601 | int relayd_send_metadata(struct lttcomm_relayd_sock *rsock, size_t len) |
00e2e675 DG |
602 | { |
603 | int ret; | |
604 | ||
605 | /* Code flow error. Safety net. */ | |
6151a90f | 606 | assert(rsock); |
00e2e675 | 607 | |
77c7c900 | 608 | DBG("Relayd sending metadata of size %zu", len); |
00e2e675 DG |
609 | |
610 | /* Send command */ | |
6151a90f | 611 | ret = send_command(rsock, RELAYD_SEND_METADATA, NULL, len, 0); |
00e2e675 DG |
612 | if (ret < 0) { |
613 | goto error; | |
614 | } | |
615 | ||
616 | DBG2("Relayd metadata added successfully"); | |
617 | ||
618 | /* | |
619 | * After that call, the metadata data MUST be sent to the relayd so the | |
620 | * receive size on the other end matches the len of the metadata packet | |
633d0084 | 621 | * header. This is why we don't wait for a reply here. |
00e2e675 DG |
622 | */ |
623 | ||
624 | error: | |
625 | return ret; | |
626 | } | |
627 | ||
628 | /* | |
6151a90f | 629 | * Connect to relay daemon with an allocated lttcomm_relayd_sock. |
00e2e675 | 630 | */ |
6151a90f | 631 | int relayd_connect(struct lttcomm_relayd_sock *rsock) |
00e2e675 DG |
632 | { |
633 | /* Code flow error. Safety net. */ | |
6151a90f | 634 | assert(rsock); |
00e2e675 | 635 | |
f96e4545 MD |
636 | if (!rsock->sock.ops) { |
637 | /* | |
638 | * Attempting a connect on a non-initialized socket. | |
639 | */ | |
640 | return -ECONNRESET; | |
641 | } | |
642 | ||
00e2e675 DG |
643 | DBG3("Relayd connect ..."); |
644 | ||
6151a90f | 645 | return rsock->sock.ops->connect(&rsock->sock); |
00e2e675 DG |
646 | } |
647 | ||
648 | /* | |
6151a90f | 649 | * Close relayd socket with an allocated lttcomm_relayd_sock. |
ffe60014 DG |
650 | * |
651 | * If no socket operations are found, simply return 0 meaning that everything | |
652 | * is fine. Without operations, the socket can not possibly be opened or used. | |
653 | * This is possible if the socket was allocated but not created. However, the | |
654 | * caller could simply use it to store a valid file descriptor for instance | |
655 | * passed over a Unix socket and call this to cleanup but still without a valid | |
656 | * ops pointer. | |
657 | * | |
658 | * Return the close returned value. On error, a negative value is usually | |
659 | * returned back from close(2). | |
00e2e675 | 660 | */ |
6151a90f | 661 | int relayd_close(struct lttcomm_relayd_sock *rsock) |
00e2e675 | 662 | { |
ffe60014 DG |
663 | int ret; |
664 | ||
00e2e675 | 665 | /* Code flow error. Safety net. */ |
6151a90f | 666 | assert(rsock); |
00e2e675 | 667 | |
ffe60014 | 668 | /* An invalid fd is fine, return success. */ |
6151a90f | 669 | if (rsock->sock.fd < 0) { |
ffe60014 DG |
670 | ret = 0; |
671 | goto end; | |
672 | } | |
673 | ||
6151a90f | 674 | DBG3("Relayd closing socket %d", rsock->sock.fd); |
00e2e675 | 675 | |
6151a90f JD |
676 | if (rsock->sock.ops) { |
677 | ret = rsock->sock.ops->close(&rsock->sock); | |
ffe60014 DG |
678 | } else { |
679 | /* Default call if no specific ops found. */ | |
6151a90f | 680 | ret = close(rsock->sock.fd); |
ffe60014 DG |
681 | if (ret < 0) { |
682 | PERROR("relayd_close default close"); | |
683 | } | |
684 | } | |
f96e4545 | 685 | rsock->sock.fd = -1; |
ffe60014 DG |
686 | |
687 | end: | |
688 | return ret; | |
00e2e675 DG |
689 | } |
690 | ||
691 | /* | |
692 | * Send data header structure to the relayd. | |
693 | */ | |
6151a90f | 694 | int relayd_send_data_hdr(struct lttcomm_relayd_sock *rsock, |
00e2e675 DG |
695 | struct lttcomm_relayd_data_hdr *hdr, size_t size) |
696 | { | |
697 | int ret; | |
698 | ||
699 | /* Code flow error. Safety net. */ | |
6151a90f | 700 | assert(rsock); |
00e2e675 DG |
701 | assert(hdr); |
702 | ||
f96e4545 MD |
703 | if (rsock->sock.fd < 0) { |
704 | return -ECONNRESET; | |
705 | } | |
706 | ||
8fd623e0 | 707 | DBG3("Relayd sending data header of size %zu", size); |
00e2e675 DG |
708 | |
709 | /* Again, safety net */ | |
710 | if (size == 0) { | |
711 | size = sizeof(struct lttcomm_relayd_data_hdr); | |
712 | } | |
713 | ||
714 | /* Only send data header. */ | |
6151a90f | 715 | ret = rsock->sock.ops->sendmsg(&rsock->sock, hdr, size, 0); |
00e2e675 | 716 | if (ret < 0) { |
8994307f | 717 | ret = -errno; |
00e2e675 DG |
718 | goto error; |
719 | } | |
720 | ||
721 | /* | |
722 | * The data MUST be sent right after that command for the receive on the | |
723 | * other end to match the size in the header. | |
724 | */ | |
725 | ||
726 | error: | |
727 | return ret; | |
728 | } | |
173af62f DG |
729 | |
730 | /* | |
731 | * Send close stream command to the relayd. | |
732 | */ | |
6151a90f | 733 | int relayd_send_close_stream(struct lttcomm_relayd_sock *rsock, uint64_t stream_id, |
173af62f DG |
734 | uint64_t last_net_seq_num) |
735 | { | |
736 | int ret; | |
737 | struct lttcomm_relayd_close_stream msg; | |
738 | struct lttcomm_relayd_generic_reply reply; | |
739 | ||
740 | /* Code flow error. Safety net. */ | |
6151a90f | 741 | assert(rsock); |
173af62f | 742 | |
77c7c900 | 743 | DBG("Relayd closing stream id %" PRIu64, stream_id); |
173af62f | 744 | |
53efb85a | 745 | memset(&msg, 0, sizeof(msg)); |
173af62f DG |
746 | msg.stream_id = htobe64(stream_id); |
747 | msg.last_net_seq_num = htobe64(last_net_seq_num); | |
748 | ||
749 | /* Send command */ | |
6151a90f | 750 | ret = send_command(rsock, RELAYD_CLOSE_STREAM, (void *) &msg, sizeof(msg), 0); |
173af62f DG |
751 | if (ret < 0) { |
752 | goto error; | |
753 | } | |
754 | ||
20275fe8 | 755 | /* Receive response */ |
6151a90f | 756 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
173af62f DG |
757 | if (ret < 0) { |
758 | goto error; | |
759 | } | |
760 | ||
761 | reply.ret_code = be32toh(reply.ret_code); | |
762 | ||
763 | /* Return session id or negative ret code. */ | |
f73fabfd | 764 | if (reply.ret_code != LTTNG_OK) { |
bb63afd9 DG |
765 | ret = -1; |
766 | ERR("Relayd close stream replied error %d", reply.ret_code); | |
173af62f DG |
767 | } else { |
768 | /* Success */ | |
769 | ret = 0; | |
770 | } | |
771 | ||
77c7c900 | 772 | DBG("Relayd close stream id %" PRIu64 " successfully", stream_id); |
173af62f DG |
773 | |
774 | error: | |
775 | return ret; | |
776 | } | |
c8f59ee5 DG |
777 | |
778 | /* | |
779 | * Check for data availability for a given stream id. | |
780 | * | |
6d805429 | 781 | * Return 0 if NOT pending, 1 if so and a negative value on error. |
c8f59ee5 | 782 | */ |
6151a90f | 783 | int relayd_data_pending(struct lttcomm_relayd_sock *rsock, uint64_t stream_id, |
c8f59ee5 DG |
784 | uint64_t last_net_seq_num) |
785 | { | |
786 | int ret; | |
6d805429 | 787 | struct lttcomm_relayd_data_pending msg; |
c8f59ee5 DG |
788 | struct lttcomm_relayd_generic_reply reply; |
789 | ||
790 | /* Code flow error. Safety net. */ | |
6151a90f | 791 | assert(rsock); |
c8f59ee5 | 792 | |
6d805429 | 793 | DBG("Relayd data pending for stream id %" PRIu64, stream_id); |
c8f59ee5 | 794 | |
53efb85a | 795 | memset(&msg, 0, sizeof(msg)); |
c8f59ee5 DG |
796 | msg.stream_id = htobe64(stream_id); |
797 | msg.last_net_seq_num = htobe64(last_net_seq_num); | |
798 | ||
799 | /* Send command */ | |
6151a90f | 800 | ret = send_command(rsock, RELAYD_DATA_PENDING, (void *) &msg, |
c8f59ee5 DG |
801 | sizeof(msg), 0); |
802 | if (ret < 0) { | |
803 | goto error; | |
804 | } | |
805 | ||
20275fe8 | 806 | /* Receive response */ |
6151a90f | 807 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
c8f59ee5 DG |
808 | if (ret < 0) { |
809 | goto error; | |
810 | } | |
811 | ||
812 | reply.ret_code = be32toh(reply.ret_code); | |
813 | ||
814 | /* Return session id or negative ret code. */ | |
815 | if (reply.ret_code >= LTTNG_OK) { | |
bb63afd9 | 816 | ERR("Relayd data pending replied error %d", reply.ret_code); |
c8f59ee5 DG |
817 | } |
818 | ||
819 | /* At this point, the ret code is either 1 or 0 */ | |
820 | ret = reply.ret_code; | |
821 | ||
6d805429 | 822 | DBG("Relayd data is %s pending for stream id %" PRIu64, |
9dd26bb9 | 823 | ret == 1 ? "" : "NOT", stream_id); |
c8f59ee5 DG |
824 | |
825 | error: | |
826 | return ret; | |
827 | } | |
828 | ||
829 | /* | |
830 | * Check on the relayd side for a quiescent state on the control socket. | |
831 | */ | |
6151a90f | 832 | int relayd_quiescent_control(struct lttcomm_relayd_sock *rsock, |
ad7051c0 | 833 | uint64_t metadata_stream_id) |
c8f59ee5 DG |
834 | { |
835 | int ret; | |
ad7051c0 | 836 | struct lttcomm_relayd_quiescent_control msg; |
c8f59ee5 DG |
837 | struct lttcomm_relayd_generic_reply reply; |
838 | ||
839 | /* Code flow error. Safety net. */ | |
6151a90f | 840 | assert(rsock); |
c8f59ee5 DG |
841 | |
842 | DBG("Relayd checking quiescent control state"); | |
843 | ||
53efb85a | 844 | memset(&msg, 0, sizeof(msg)); |
ad7051c0 DG |
845 | msg.stream_id = htobe64(metadata_stream_id); |
846 | ||
c8f59ee5 | 847 | /* Send command */ |
6151a90f | 848 | ret = send_command(rsock, RELAYD_QUIESCENT_CONTROL, &msg, sizeof(msg), 0); |
c8f59ee5 DG |
849 | if (ret < 0) { |
850 | goto error; | |
851 | } | |
852 | ||
20275fe8 | 853 | /* Receive response */ |
6151a90f | 854 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
c8f59ee5 DG |
855 | if (ret < 0) { |
856 | goto error; | |
857 | } | |
858 | ||
859 | reply.ret_code = be32toh(reply.ret_code); | |
860 | ||
861 | /* Return session id or negative ret code. */ | |
862 | if (reply.ret_code != LTTNG_OK) { | |
bb63afd9 DG |
863 | ret = -1; |
864 | ERR("Relayd quiescent control replied error %d", reply.ret_code); | |
c8f59ee5 DG |
865 | goto error; |
866 | } | |
867 | ||
868 | /* Control socket is quiescent */ | |
6d805429 | 869 | return 0; |
c8f59ee5 DG |
870 | |
871 | error: | |
872 | return ret; | |
873 | } | |
f7079f67 DG |
874 | |
875 | /* | |
876 | * Begin a data pending command for a specific session id. | |
877 | */ | |
6151a90f | 878 | int relayd_begin_data_pending(struct lttcomm_relayd_sock *rsock, uint64_t id) |
f7079f67 DG |
879 | { |
880 | int ret; | |
881 | struct lttcomm_relayd_begin_data_pending msg; | |
882 | struct lttcomm_relayd_generic_reply reply; | |
883 | ||
884 | /* Code flow error. Safety net. */ | |
6151a90f | 885 | assert(rsock); |
f7079f67 DG |
886 | |
887 | DBG("Relayd begin data pending"); | |
888 | ||
53efb85a | 889 | memset(&msg, 0, sizeof(msg)); |
f7079f67 DG |
890 | msg.session_id = htobe64(id); |
891 | ||
892 | /* Send command */ | |
6151a90f | 893 | ret = send_command(rsock, RELAYD_BEGIN_DATA_PENDING, &msg, sizeof(msg), 0); |
f7079f67 DG |
894 | if (ret < 0) { |
895 | goto error; | |
896 | } | |
897 | ||
20275fe8 | 898 | /* Receive response */ |
6151a90f | 899 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
f7079f67 DG |
900 | if (ret < 0) { |
901 | goto error; | |
902 | } | |
903 | ||
904 | reply.ret_code = be32toh(reply.ret_code); | |
905 | ||
906 | /* Return session id or negative ret code. */ | |
907 | if (reply.ret_code != LTTNG_OK) { | |
bb63afd9 DG |
908 | ret = -1; |
909 | ERR("Relayd begin data pending replied error %d", reply.ret_code); | |
f7079f67 DG |
910 | goto error; |
911 | } | |
912 | ||
913 | return 0; | |
914 | ||
915 | error: | |
916 | return ret; | |
917 | } | |
918 | ||
919 | /* | |
920 | * End a data pending command for a specific session id. | |
921 | * | |
922 | * Return 0 on success and set is_data_inflight to 0 if no data is being | |
923 | * streamed or 1 if it is the case. | |
924 | */ | |
6151a90f | 925 | int relayd_end_data_pending(struct lttcomm_relayd_sock *rsock, uint64_t id, |
f7079f67 DG |
926 | unsigned int *is_data_inflight) |
927 | { | |
af6c30b5 | 928 | int ret, recv_ret; |
f7079f67 DG |
929 | struct lttcomm_relayd_end_data_pending msg; |
930 | struct lttcomm_relayd_generic_reply reply; | |
931 | ||
932 | /* Code flow error. Safety net. */ | |
6151a90f | 933 | assert(rsock); |
f7079f67 DG |
934 | |
935 | DBG("Relayd end data pending"); | |
936 | ||
53efb85a | 937 | memset(&msg, 0, sizeof(msg)); |
f7079f67 DG |
938 | msg.session_id = htobe64(id); |
939 | ||
940 | /* Send command */ | |
6151a90f | 941 | ret = send_command(rsock, RELAYD_END_DATA_PENDING, &msg, sizeof(msg), 0); |
f7079f67 DG |
942 | if (ret < 0) { |
943 | goto error; | |
944 | } | |
945 | ||
20275fe8 | 946 | /* Receive response */ |
6151a90f | 947 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
f7079f67 DG |
948 | if (ret < 0) { |
949 | goto error; | |
950 | } | |
951 | ||
af6c30b5 DG |
952 | recv_ret = be32toh(reply.ret_code); |
953 | if (recv_ret < 0) { | |
954 | ret = recv_ret; | |
f7079f67 DG |
955 | goto error; |
956 | } | |
957 | ||
af6c30b5 | 958 | *is_data_inflight = recv_ret; |
f7079f67 | 959 | |
af6c30b5 | 960 | DBG("Relayd end data pending is data inflight: %d", recv_ret); |
f7079f67 DG |
961 | |
962 | return 0; | |
963 | ||
964 | error: | |
965 | return ret; | |
966 | } | |
1c20f0e2 JD |
967 | |
968 | /* | |
969 | * Send index to the relayd. | |
970 | */ | |
971 | int relayd_send_index(struct lttcomm_relayd_sock *rsock, | |
50adc264 | 972 | struct ctf_packet_index *index, uint64_t relay_stream_id, |
1c20f0e2 JD |
973 | uint64_t net_seq_num) |
974 | { | |
975 | int ret; | |
976 | struct lttcomm_relayd_index msg; | |
977 | struct lttcomm_relayd_generic_reply reply; | |
978 | ||
979 | /* Code flow error. Safety net. */ | |
980 | assert(rsock); | |
981 | ||
982 | if (rsock->minor < 4) { | |
983 | DBG("Not sending indexes before protocol 2.4"); | |
984 | ret = 0; | |
985 | goto error; | |
986 | } | |
987 | ||
988 | DBG("Relayd sending index for stream ID %" PRIu64, relay_stream_id); | |
989 | ||
53efb85a | 990 | memset(&msg, 0, sizeof(msg)); |
1c20f0e2 JD |
991 | msg.relay_stream_id = htobe64(relay_stream_id); |
992 | msg.net_seq_num = htobe64(net_seq_num); | |
993 | ||
994 | /* The index is already in big endian. */ | |
995 | msg.packet_size = index->packet_size; | |
996 | msg.content_size = index->content_size; | |
997 | msg.timestamp_begin = index->timestamp_begin; | |
998 | msg.timestamp_end = index->timestamp_end; | |
999 | msg.events_discarded = index->events_discarded; | |
1000 | msg.stream_id = index->stream_id; | |
1001 | ||
234cd636 JD |
1002 | if (rsock->minor >= 8) { |
1003 | msg.stream_instance_id = index->stream_instance_id; | |
1004 | msg.packet_seq_num = index->packet_seq_num; | |
1005 | } | |
1006 | ||
1c20f0e2 | 1007 | /* Send command */ |
f8f3885c MD |
1008 | ret = send_command(rsock, RELAYD_SEND_INDEX, &msg, |
1009 | lttcomm_relayd_index_len(lttng_to_index_major(rsock->major, | |
1010 | rsock->minor), | |
1011 | lttng_to_index_minor(rsock->major, rsock->minor)), | |
1012 | 0); | |
1c20f0e2 JD |
1013 | if (ret < 0) { |
1014 | goto error; | |
1015 | } | |
1016 | ||
1017 | /* Receive response */ | |
1018 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); | |
1019 | if (ret < 0) { | |
1020 | goto error; | |
1021 | } | |
1022 | ||
1023 | reply.ret_code = be32toh(reply.ret_code); | |
1024 | ||
1025 | /* Return session id or negative ret code. */ | |
1026 | if (reply.ret_code != LTTNG_OK) { | |
1027 | ret = -1; | |
1028 | ERR("Relayd send index replied error %d", reply.ret_code); | |
1029 | } else { | |
1030 | /* Success */ | |
1031 | ret = 0; | |
1032 | } | |
1033 | ||
1034 | error: | |
1035 | return ret; | |
1036 | } | |
93ec662e JD |
1037 | |
1038 | /* | |
1039 | * Ask the relay to reset the metadata trace file (regeneration). | |
1040 | */ | |
1041 | int relayd_reset_metadata(struct lttcomm_relayd_sock *rsock, | |
1042 | uint64_t stream_id, uint64_t version) | |
1043 | { | |
1044 | int ret; | |
1045 | struct lttcomm_relayd_reset_metadata msg; | |
1046 | struct lttcomm_relayd_generic_reply reply; | |
1047 | ||
1048 | /* Code flow error. Safety net. */ | |
1049 | assert(rsock); | |
1050 | ||
1051 | /* Should have been prevented by the sessiond. */ | |
1052 | if (rsock->minor < 8) { | |
1053 | ERR("Metadata regeneration unsupported before 2.8"); | |
1054 | ret = -1; | |
1055 | goto error; | |
1056 | } | |
1057 | ||
1058 | DBG("Relayd reset metadata stream id %" PRIu64, stream_id); | |
1059 | ||
1060 | memset(&msg, 0, sizeof(msg)); | |
1061 | msg.stream_id = htobe64(stream_id); | |
1062 | msg.version = htobe64(version); | |
1063 | ||
1064 | /* Send command */ | |
1065 | ret = send_command(rsock, RELAYD_RESET_METADATA, (void *) &msg, sizeof(msg), 0); | |
1066 | if (ret < 0) { | |
1067 | goto error; | |
1068 | } | |
1069 | ||
1070 | /* Receive response */ | |
1071 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); | |
1072 | if (ret < 0) { | |
1073 | goto error; | |
1074 | } | |
1075 | ||
1076 | reply.ret_code = be32toh(reply.ret_code); | |
1077 | ||
1078 | /* Return session id or negative ret code. */ | |
1079 | if (reply.ret_code != LTTNG_OK) { | |
1080 | ret = -1; | |
1081 | ERR("Relayd reset metadata replied error %d", reply.ret_code); | |
1082 | } else { | |
1083 | /* Success */ | |
1084 | ret = 0; | |
1085 | } | |
1086 | ||
1087 | DBG("Relayd reset metadata stream id %" PRIu64 " successfully", stream_id); | |
1088 | ||
1089 | error: | |
1090 | return ret; | |
1091 | } | |
a1ae2ea5 | 1092 | |
d73bf3d7 JD |
1093 | int relayd_rotate_stream(struct lttcomm_relayd_sock *rsock, uint64_t stream_id, |
1094 | const char *new_pathname, uint64_t new_chunk_id, | |
1095 | uint64_t seq_num) | |
1096 | { | |
1097 | int ret; | |
1098 | struct lttcomm_relayd_rotate_stream *msg = NULL; | |
1099 | struct lttcomm_relayd_generic_reply reply; | |
1100 | size_t len; | |
1101 | int msg_len; | |
1102 | ||
1103 | /* Code flow error. Safety net. */ | |
1104 | assert(rsock); | |
1105 | ||
1106 | DBG("Sending rotate stream id %" PRIu64 " command to relayd", stream_id); | |
1107 | ||
1108 | /* Account for the trailing NULL. */ | |
27283937 | 1109 | len = lttng_strnlen(new_pathname, LTTNG_PATH_MAX) + 1; |
d73bf3d7 JD |
1110 | if (len > LTTNG_PATH_MAX) { |
1111 | ERR("Path used in relayd rotate stream command exceeds the maximal allowed length"); | |
1112 | ret = -1; | |
1113 | goto error; | |
1114 | } | |
1115 | ||
1116 | msg_len = offsetof(struct lttcomm_relayd_rotate_stream, new_pathname) + len; | |
1117 | msg = zmalloc(msg_len); | |
1118 | if (!msg) { | |
1119 | PERROR("Failed to allocate relayd rotate stream command of %d bytes", | |
1120 | msg_len); | |
1121 | ret = -1; | |
1122 | goto error; | |
1123 | } | |
1124 | ||
1125 | if (lttng_strncpy(msg->new_pathname, new_pathname, len)) { | |
1126 | ret = -1; | |
1127 | ERR("Failed to copy relayd rotate stream command's new path name"); | |
1128 | goto error; | |
1129 | } | |
1130 | ||
1131 | msg->pathname_length = htobe32(len); | |
1132 | msg->stream_id = htobe64(stream_id); | |
1133 | msg->new_chunk_id = htobe64(new_chunk_id); | |
1134 | /* | |
1135 | * The seq_num is invalid for metadata streams, but it is ignored on | |
1136 | * the relay. | |
1137 | */ | |
1138 | msg->rotate_at_seq_num = htobe64(seq_num); | |
1139 | ||
1140 | /* Send command. */ | |
1141 | ret = send_command(rsock, RELAYD_ROTATE_STREAM, (void *) msg, msg_len, 0); | |
1142 | if (ret < 0) { | |
1143 | ERR("Send rotate command"); | |
1144 | goto error; | |
1145 | } | |
1146 | ||
1147 | /* Receive response. */ | |
1148 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); | |
1149 | if (ret < 0) { | |
1150 | ERR("Receive rotate reply"); | |
1151 | goto error; | |
1152 | } | |
1153 | ||
1154 | reply.ret_code = be32toh(reply.ret_code); | |
1155 | ||
1156 | /* Return session id or negative ret code. */ | |
1157 | if (reply.ret_code != LTTNG_OK) { | |
1158 | ret = -1; | |
1159 | ERR("Relayd rotate stream replied error %d", reply.ret_code); | |
1160 | } else { | |
1161 | /* Success. */ | |
1162 | ret = 0; | |
1163 | DBG("Relayd rotated stream id %" PRIu64 " successfully", stream_id); | |
1164 | } | |
1165 | ||
1166 | error: | |
1167 | free(msg); | |
1168 | return ret; | |
1169 | } | |
1170 | ||
00fb02ac JD |
1171 | int relayd_rotate_rename(struct lttcomm_relayd_sock *rsock, |
1172 | const char *old_path, const char *new_path) | |
1173 | { | |
1174 | int ret; | |
1175 | struct lttcomm_relayd_rotate_rename *msg = NULL; | |
1176 | struct lttcomm_relayd_generic_reply reply; | |
1177 | size_t old_path_length, new_path_length; | |
1178 | size_t msg_length; | |
1179 | ||
1180 | /* Code flow error. Safety net. */ | |
1181 | assert(rsock); | |
1182 | ||
1183 | DBG("Relayd rename chunk %s to %s", old_path, new_path); | |
1184 | ||
1185 | /* The two paths are sent with a '\0' delimiter between them. */ | |
1186 | old_path_length = strlen(old_path) + 1; | |
1187 | new_path_length = strlen(new_path) + 1; | |
1188 | ||
1189 | msg_length = sizeof(*msg) + old_path_length + new_path_length; | |
1190 | msg = zmalloc(msg_length); | |
1191 | if (!msg) { | |
1192 | PERROR("zmalloc rotate-rename command message"); | |
1193 | ret = -1; | |
1194 | goto error; | |
1195 | } | |
1196 | ||
1197 | assert(old_path_length <= UINT32_MAX); | |
1198 | msg->old_path_length = htobe32(old_path_length); | |
1199 | ||
1200 | assert(new_path_length <= UINT32_MAX); | |
1201 | msg->new_path_length = htobe32(new_path_length); | |
1202 | ||
1203 | strcpy(msg->paths, old_path); | |
1204 | strcpy(msg->paths + old_path_length, new_path); | |
1205 | ||
1206 | /* Send command */ | |
1207 | ret = send_command(rsock, RELAYD_ROTATE_RENAME, (const void *) msg, | |
1208 | msg_length, 0); | |
1209 | if (ret < 0) { | |
1210 | goto error; | |
1211 | } | |
1212 | ||
1213 | /* Receive response */ | |
1214 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); | |
1215 | if (ret < 0) { | |
1216 | goto error; | |
1217 | } | |
1218 | ||
1219 | reply.ret_code = be32toh(reply.ret_code); | |
1220 | ||
1221 | /* Return session id or negative ret code. */ | |
1222 | if (reply.ret_code != LTTNG_OK) { | |
1223 | ret = -1; | |
1224 | ERR("Relayd rotate rename replied error %d", reply.ret_code); | |
1225 | } else { | |
1226 | /* Success */ | |
1227 | ret = 0; | |
1228 | } | |
1229 | ||
1230 | DBG("Relayd rotate rename completed successfully"); | |
1231 | ||
1232 | error: | |
1233 | free(msg); | |
1234 | return ret; | |
1235 | } | |
1236 | ||
d88744a4 JD |
1237 | int relayd_rotate_pending(struct lttcomm_relayd_sock *rsock, uint64_t chunk_id) |
1238 | { | |
1239 | int ret; | |
1240 | struct lttcomm_relayd_rotate_pending msg; | |
1241 | struct lttcomm_relayd_rotate_pending_reply reply; | |
1242 | ||
1243 | /* Code flow error. Safety net. */ | |
1244 | assert(rsock); | |
1245 | ||
1246 | DBG("Querying relayd for rotate pending with chunk_id %" PRIu64, | |
1247 | chunk_id); | |
1248 | ||
1249 | memset(&msg, 0, sizeof(msg)); | |
1250 | msg.chunk_id = htobe64(chunk_id); | |
1251 | ||
1252 | /* Send command */ | |
1253 | ret = send_command(rsock, RELAYD_ROTATE_PENDING, (void *) &msg, | |
1254 | sizeof(msg), 0); | |
1255 | if (ret < 0) { | |
1256 | goto error; | |
1257 | } | |
1258 | ||
1259 | /* Receive response */ | |
1260 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); | |
1261 | if (ret < 0) { | |
1262 | goto error; | |
1263 | } | |
1264 | ||
1265 | reply.generic.ret_code = be32toh(reply.generic.ret_code); | |
1266 | ||
1267 | /* Return session id or negative ret code. */ | |
1268 | if (reply.generic.ret_code != LTTNG_OK) { | |
1269 | ret = -reply.generic.ret_code; | |
1270 | ERR("Relayd rotate pending replied with error %d", ret); | |
1271 | goto error; | |
1272 | } else { | |
1273 | /* No error, just rotate pending state */ | |
1274 | if (reply.is_pending == 0 || reply.is_pending == 1) { | |
1275 | ret = reply.is_pending; | |
1276 | DBG("Relayd rotate pending command completed successfully with result \"%s\"", | |
1277 | ret ? "rotation pending" : "rotation NOT pending"); | |
1278 | } else { | |
1279 | ret = -LTTNG_ERR_UNK; | |
1280 | } | |
1281 | } | |
1282 | ||
1283 | error: | |
1284 | return ret; | |
1285 | } | |
1286 | ||
a1ae2ea5 JD |
1287 | int relayd_mkdir(struct lttcomm_relayd_sock *rsock, const char *path) |
1288 | { | |
1289 | int ret; | |
1290 | struct lttcomm_relayd_mkdir *msg; | |
1291 | struct lttcomm_relayd_generic_reply reply; | |
1292 | size_t len; | |
1293 | ||
1294 | /* Code flow error. Safety net. */ | |
1295 | assert(rsock); | |
1296 | ||
1297 | DBG("Relayd mkdir path %s", path); | |
1298 | ||
1299 | len = strlen(path) + 1; | |
1300 | msg = zmalloc(sizeof(msg->length) + len); | |
1301 | if (!msg) { | |
1302 | PERROR("Alloc mkdir msg"); | |
1303 | ret = -1; | |
1304 | goto error; | |
1305 | } | |
1306 | msg->length = htobe32((uint32_t) len); | |
1307 | ||
1308 | if (lttng_strncpy(msg->path, path, len)) { | |
1309 | ret = -1; | |
1310 | goto error; | |
1311 | } | |
1312 | ||
1313 | /* Send command */ | |
1314 | ret = send_command(rsock, RELAYD_MKDIR, (void *) msg, | |
1315 | sizeof(msg->length) + len, 0); | |
1316 | if (ret < 0) { | |
1317 | goto error; | |
1318 | } | |
1319 | ||
1320 | /* Receive response */ | |
1321 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); | |
1322 | if (ret < 0) { | |
1323 | goto error; | |
1324 | } | |
1325 | ||
1326 | reply.ret_code = be32toh(reply.ret_code); | |
1327 | ||
1328 | /* Return session id or negative ret code. */ | |
1329 | if (reply.ret_code != LTTNG_OK) { | |
1330 | ret = -1; | |
1331 | ERR("Relayd mkdir replied error %d", reply.ret_code); | |
1332 | } else { | |
1333 | /* Success */ | |
1334 | ret = 0; | |
1335 | } | |
1336 | ||
1337 | DBG("Relayd mkdir completed successfully"); | |
1338 | ||
1339 | error: | |
1340 | free(msg); | |
1341 | return ret; | |
a1ae2ea5 | 1342 | } |