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> |
e5148e25 | 32 | #include <common/trace-chunk.h> |
84a93c08 | 33 | #include <common/string-utils/format.h> |
00e2e675 DG |
34 | |
35 | #include "relayd.h" | |
36 | ||
37 | /* | |
38 | * Send command. Fill up the header and append the data. | |
39 | */ | |
6151a90f | 40 | static int send_command(struct lttcomm_relayd_sock *rsock, |
76b9afaa | 41 | enum lttcomm_relayd_command cmd, const void *data, size_t size, |
00e2e675 DG |
42 | int flags) |
43 | { | |
44 | int ret; | |
45 | struct lttcomm_relayd_hdr header; | |
46 | char *buf; | |
47 | uint64_t buf_size = sizeof(header); | |
48 | ||
f96e4545 MD |
49 | if (rsock->sock.fd < 0) { |
50 | return -ECONNRESET; | |
51 | } | |
52 | ||
00e2e675 DG |
53 | if (data) { |
54 | buf_size += size; | |
55 | } | |
56 | ||
57 | buf = zmalloc(buf_size); | |
58 | if (buf == NULL) { | |
59 | PERROR("zmalloc relayd send command buf"); | |
60 | ret = -1; | |
61 | goto alloc_error; | |
62 | } | |
63 | ||
53efb85a | 64 | memset(&header, 0, sizeof(header)); |
00e2e675 DG |
65 | header.cmd = htobe32(cmd); |
66 | header.data_size = htobe64(size); | |
67 | ||
68 | /* Zeroed for now since not used. */ | |
69 | header.cmd_version = 0; | |
70 | header.circuit_id = 0; | |
71 | ||
72 | /* Prepare buffer to send. */ | |
73 | memcpy(buf, &header, sizeof(header)); | |
74 | if (data) { | |
75 | memcpy(buf + sizeof(header), data, size); | |
76 | } | |
77 | ||
06586bbe | 78 | DBG3("Relayd sending command %d of size %" PRIu64, (int) cmd, buf_size); |
6151a90f | 79 | ret = rsock->sock.ops->sendmsg(&rsock->sock, buf, buf_size, flags); |
00e2e675 | 80 | if (ret < 0) { |
06586bbe JG |
81 | PERROR("Failed to send command %d of size %" PRIu64, |
82 | (int) cmd, buf_size); | |
8994307f | 83 | ret = -errno; |
00e2e675 DG |
84 | goto error; |
85 | } | |
00e2e675 DG |
86 | error: |
87 | free(buf); | |
88 | alloc_error: | |
89 | return ret; | |
90 | } | |
91 | ||
92 | /* | |
93 | * Receive reply data on socket. This MUST be call after send_command or else | |
94 | * could result in unexpected behavior(s). | |
95 | */ | |
6151a90f | 96 | static int recv_reply(struct lttcomm_relayd_sock *rsock, void *data, size_t size) |
00e2e675 DG |
97 | { |
98 | int ret; | |
99 | ||
f96e4545 MD |
100 | if (rsock->sock.fd < 0) { |
101 | return -ECONNRESET; | |
102 | } | |
103 | ||
8fd623e0 | 104 | DBG3("Relayd waiting for reply of size %zu", size); |
00e2e675 | 105 | |
6151a90f | 106 | ret = rsock->sock.ops->recvmsg(&rsock->sock, data, size, 0); |
20275fe8 DG |
107 | if (ret <= 0 || ret != size) { |
108 | if (ret == 0) { | |
109 | /* Orderly shutdown. */ | |
6151a90f | 110 | DBG("Socket %d has performed an orderly shutdown", rsock->sock.fd); |
20275fe8 | 111 | } else { |
8fd623e0 | 112 | DBG("Receiving reply failed on sock %d for size %zu with ret %d", |
6151a90f | 113 | rsock->sock.fd, size, ret); |
20275fe8 DG |
114 | } |
115 | /* Always return -1 here and the caller can use errno. */ | |
116 | ret = -1; | |
00e2e675 DG |
117 | goto error; |
118 | } | |
119 | ||
120 | error: | |
121 | return ret; | |
122 | } | |
123 | ||
d3e2ba59 | 124 | /* |
6ef36453 MD |
125 | * Starting from 2.11, RELAYD_CREATE_SESSION payload (session_name, |
126 | * hostname, and base_path) have no length restriction on the sender side. | |
f86f6389 JR |
127 | * Length for both payloads is stored in the msg struct. A new dynamic size |
128 | * payload size is introduced. | |
129 | */ | |
130 | static int relayd_create_session_2_11(struct lttcomm_relayd_sock *rsock, | |
65ff8ea3 | 131 | const char *session_name, const char *hostname, |
6ef36453 MD |
132 | const char *base_path, int session_live_timer, |
133 | unsigned int snapshot, uint64_t sessiond_session_id, | |
134 | const lttng_uuid sessiond_uuid, const uint64_t *current_chunk_id, | |
0fb564b1 | 135 | time_t creation_time) |
f86f6389 JR |
136 | { |
137 | int ret; | |
138 | struct lttcomm_relayd_create_session_2_11 *msg = NULL; | |
139 | size_t session_name_len; | |
140 | size_t hostname_len; | |
6ef36453 | 141 | size_t base_path_len; |
f86f6389 | 142 | size_t msg_length; |
6ef36453 | 143 | char *dst; |
f86f6389 JR |
144 | |
145 | /* The two names are sent with a '\0' delimiter between them. */ | |
146 | session_name_len = strlen(session_name) + 1; | |
147 | hostname_len = strlen(hostname) + 1; | |
6ef36453 | 148 | base_path_len = base_path ? strlen(base_path) + 1 : 0; |
f86f6389 | 149 | |
6ef36453 | 150 | msg_length = sizeof(*msg) + session_name_len + hostname_len + base_path_len; |
f86f6389 JR |
151 | msg = zmalloc(msg_length); |
152 | if (!msg) { | |
153 | PERROR("zmalloc create_session_2_11 command message"); | |
154 | ret = -1; | |
155 | goto error; | |
156 | } | |
157 | ||
158 | assert(session_name_len <= UINT32_MAX); | |
159 | msg->session_name_len = htobe32(session_name_len); | |
160 | ||
161 | assert(hostname_len <= UINT32_MAX); | |
162 | msg->hostname_len = htobe32(hostname_len); | |
163 | ||
6ef36453 MD |
164 | assert(base_path_len <= UINT32_MAX); |
165 | msg->base_path_len = htobe32(base_path_len); | |
166 | ||
167 | dst = msg->names; | |
168 | if (lttng_strncpy(dst, session_name, session_name_len)) { | |
169 | ret = -1; | |
170 | goto error; | |
171 | } | |
172 | dst += session_name_len; | |
173 | if (lttng_strncpy(dst, hostname, hostname_len)) { | |
f86f6389 JR |
174 | ret = -1; |
175 | goto error; | |
176 | } | |
6ef36453 MD |
177 | dst += hostname_len; |
178 | if (base_path && lttng_strncpy(dst, base_path, base_path_len)) { | |
f86f6389 JR |
179 | ret = -1; |
180 | goto error; | |
181 | } | |
182 | ||
183 | msg->live_timer = htobe32(session_live_timer); | |
184 | msg->snapshot = !!snapshot; | |
185 | ||
fdc04e4b JG |
186 | lttng_uuid_copy(msg->sessiond_uuid, sessiond_uuid); |
187 | msg->session_id = htobe64(sessiond_session_id); | |
188 | ||
165a2054 JG |
189 | if (current_chunk_id) { |
190 | LTTNG_OPTIONAL_SET(&msg->current_chunk_id, | |
191 | htobe64(*current_chunk_id)); | |
192 | } | |
193 | ||
0fb564b1 JG |
194 | msg->creation_time = htobe64((uint64_t) creation_time); |
195 | ||
f86f6389 JR |
196 | /* Send command */ |
197 | ret = send_command(rsock, RELAYD_CREATE_SESSION, msg, msg_length, 0); | |
198 | if (ret < 0) { | |
199 | goto error; | |
200 | } | |
201 | error: | |
202 | free(msg); | |
203 | return ret; | |
204 | } | |
205 | /* | |
206 | * From 2.4 to 2.10, RELAYD_CREATE_SESSION takes additional parameters to | |
d3e2ba59 JD |
207 | * support the live reading capability. |
208 | */ | |
209 | static int relayd_create_session_2_4(struct lttcomm_relayd_sock *rsock, | |
65ff8ea3 JG |
210 | const char *session_name, const char *hostname, |
211 | int session_live_timer, unsigned int snapshot) | |
d3e2ba59 JD |
212 | { |
213 | int ret; | |
214 | struct lttcomm_relayd_create_session_2_4 msg; | |
215 | ||
3a13ffd5 MD |
216 | if (lttng_strncpy(msg.session_name, session_name, |
217 | sizeof(msg.session_name))) { | |
246777db MD |
218 | ret = -1; |
219 | goto error; | |
220 | } | |
3a13ffd5 | 221 | if (lttng_strncpy(msg.hostname, hostname, sizeof(msg.hostname))) { |
246777db MD |
222 | ret = -1; |
223 | goto error; | |
224 | } | |
d3e2ba59 | 225 | msg.live_timer = htobe32(session_live_timer); |
7d2f7452 | 226 | msg.snapshot = htobe32(snapshot); |
d3e2ba59 JD |
227 | |
228 | /* Send command */ | |
229 | ret = send_command(rsock, RELAYD_CREATE_SESSION, &msg, sizeof(msg), 0); | |
230 | if (ret < 0) { | |
231 | goto error; | |
232 | } | |
233 | ||
234 | error: | |
235 | return ret; | |
236 | } | |
237 | ||
238 | /* | |
239 | * RELAYD_CREATE_SESSION from 2.1 to 2.3. | |
240 | */ | |
42e9a27b | 241 | static int relayd_create_session_2_1(struct lttcomm_relayd_sock *rsock) |
d3e2ba59 JD |
242 | { |
243 | int ret; | |
244 | ||
245 | /* Send command */ | |
246 | ret = send_command(rsock, RELAYD_CREATE_SESSION, NULL, 0, 0); | |
247 | if (ret < 0) { | |
248 | goto error; | |
249 | } | |
250 | ||
251 | error: | |
252 | return ret; | |
253 | } | |
254 | ||
c5b6f4f0 DG |
255 | /* |
256 | * Send a RELAYD_CREATE_SESSION command to the relayd with the given socket and | |
257 | * set session_id of the relayd if we have a successful reply from the relayd. | |
258 | * | |
20275fe8 DG |
259 | * On success, return 0 else a negative value which is either an errno error or |
260 | * a lttng error code from the relayd. | |
c5b6f4f0 | 261 | */ |
65ff8ea3 JG |
262 | int relayd_create_session(struct lttcomm_relayd_sock *rsock, |
263 | uint64_t *relayd_session_id, | |
264 | const char *session_name, const char *hostname, | |
6ef36453 | 265 | const char *base_path, int session_live_timer, |
fdc04e4b | 266 | unsigned int snapshot, uint64_t sessiond_session_id, |
165a2054 | 267 | const lttng_uuid sessiond_uuid, |
0fb564b1 JG |
268 | const uint64_t *current_chunk_id, |
269 | time_t creation_time) | |
c5b6f4f0 DG |
270 | { |
271 | int ret; | |
272 | struct lttcomm_relayd_status_session reply; | |
273 | ||
6151a90f | 274 | assert(rsock); |
fdc04e4b | 275 | assert(relayd_session_id); |
c5b6f4f0 DG |
276 | |
277 | DBG("Relayd create session"); | |
278 | ||
f86f6389 JR |
279 | if (rsock->minor < 4) { |
280 | /* From 2.1 to 2.3 */ | |
281 | ret = relayd_create_session_2_1(rsock); | |
282 | } else if (rsock->minor >= 4 && rsock->minor < 11) { | |
283 | /* From 2.4 to 2.10 */ | |
284 | ret = relayd_create_session_2_4(rsock, session_name, | |
285 | hostname, session_live_timer, snapshot); | |
286 | } else { | |
287 | /* From 2.11 to ... */ | |
288 | ret = relayd_create_session_2_11(rsock, session_name, | |
6ef36453 | 289 | hostname, base_path, session_live_timer, snapshot, |
165a2054 | 290 | sessiond_session_id, sessiond_uuid, |
0fb564b1 | 291 | current_chunk_id, creation_time); |
d3e2ba59 JD |
292 | } |
293 | ||
c5b6f4f0 DG |
294 | if (ret < 0) { |
295 | goto error; | |
296 | } | |
297 | ||
20275fe8 | 298 | /* Receive response */ |
6151a90f | 299 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
c5b6f4f0 DG |
300 | if (ret < 0) { |
301 | goto error; | |
302 | } | |
303 | ||
304 | reply.session_id = be64toh(reply.session_id); | |
305 | reply.ret_code = be32toh(reply.ret_code); | |
306 | ||
307 | /* Return session id or negative ret code. */ | |
308 | if (reply.ret_code != LTTNG_OK) { | |
bb63afd9 DG |
309 | ret = -1; |
310 | ERR("Relayd create session replied error %d", reply.ret_code); | |
c5b6f4f0 DG |
311 | goto error; |
312 | } else { | |
313 | ret = 0; | |
fdc04e4b | 314 | *relayd_session_id = reply.session_id; |
c5b6f4f0 DG |
315 | } |
316 | ||
317 | DBG("Relayd session created with id %" PRIu64, reply.session_id); | |
318 | ||
319 | error: | |
320 | return ret; | |
321 | } | |
322 | ||
2f21a469 JR |
323 | static int relayd_add_stream_2_1(struct lttcomm_relayd_sock *rsock, |
324 | const char *channel_name, const char *pathname) | |
325 | { | |
326 | int ret; | |
327 | struct lttcomm_relayd_add_stream msg; | |
328 | ||
329 | memset(&msg, 0, sizeof(msg)); | |
330 | if (lttng_strncpy(msg.channel_name, channel_name, | |
331 | sizeof(msg.channel_name))) { | |
332 | ret = -1; | |
333 | goto error; | |
334 | } | |
335 | ||
336 | if (lttng_strncpy(msg.pathname, pathname, | |
337 | sizeof(msg.pathname))) { | |
338 | ret = -1; | |
339 | goto error; | |
340 | } | |
341 | ||
342 | /* Send command */ | |
343 | ret = send_command(rsock, RELAYD_ADD_STREAM, (void *) &msg, sizeof(msg), 0); | |
344 | if (ret < 0) { | |
345 | ret = -1; | |
346 | goto error; | |
347 | } | |
348 | ret = 0; | |
349 | error: | |
350 | return ret; | |
351 | } | |
352 | ||
353 | static int relayd_add_stream_2_2(struct lttcomm_relayd_sock *rsock, | |
354 | const char *channel_name, const char *pathname, | |
355 | uint64_t tracefile_size, uint64_t tracefile_count) | |
356 | { | |
357 | int ret; | |
358 | struct lttcomm_relayd_add_stream_2_2 msg; | |
359 | ||
360 | memset(&msg, 0, sizeof(msg)); | |
361 | /* Compat with relayd 2.2 to 2.10 */ | |
362 | if (lttng_strncpy(msg.channel_name, channel_name, | |
363 | sizeof(msg.channel_name))) { | |
364 | ret = -1; | |
365 | goto error; | |
366 | } | |
367 | if (lttng_strncpy(msg.pathname, pathname, | |
368 | sizeof(msg.pathname))) { | |
369 | ret = -1; | |
370 | goto error; | |
371 | } | |
372 | msg.tracefile_size = htobe64(tracefile_size); | |
373 | msg.tracefile_count = htobe64(tracefile_count); | |
374 | ||
375 | /* Send command */ | |
376 | ret = send_command(rsock, RELAYD_ADD_STREAM, (void *) &msg, sizeof(msg), 0); | |
377 | if (ret < 0) { | |
378 | goto error; | |
379 | } | |
380 | ret = 0; | |
381 | error: | |
382 | return ret; | |
383 | } | |
384 | ||
385 | static int relayd_add_stream_2_11(struct lttcomm_relayd_sock *rsock, | |
386 | const char *channel_name, const char *pathname, | |
6f768002 JG |
387 | uint64_t tracefile_size, uint64_t tracefile_count, |
388 | uint64_t trace_archive_id) | |
2f21a469 JR |
389 | { |
390 | int ret; | |
391 | struct lttcomm_relayd_add_stream_2_11 *msg = NULL; | |
392 | size_t channel_name_len; | |
393 | size_t pathname_len; | |
394 | size_t msg_length; | |
395 | ||
396 | /* The two names are sent with a '\0' delimiter between them. */ | |
397 | channel_name_len = strlen(channel_name) + 1; | |
398 | pathname_len = strlen(pathname) + 1; | |
399 | ||
400 | msg_length = sizeof(*msg) + channel_name_len + pathname_len; | |
401 | msg = zmalloc(msg_length); | |
402 | if (!msg) { | |
403 | PERROR("zmalloc add_stream_2_11 command message"); | |
404 | ret = -1; | |
405 | goto error; | |
406 | } | |
407 | ||
408 | assert(channel_name_len <= UINT32_MAX); | |
409 | msg->channel_name_len = htobe32(channel_name_len); | |
410 | ||
411 | assert(pathname_len <= UINT32_MAX); | |
412 | msg->pathname_len = htobe32(pathname_len); | |
413 | ||
414 | if (lttng_strncpy(msg->names, channel_name, channel_name_len)) { | |
415 | ret = -1; | |
416 | goto error; | |
417 | } | |
418 | if (lttng_strncpy(msg->names + channel_name_len, pathname, pathname_len)) { | |
419 | ret = -1; | |
420 | goto error; | |
421 | } | |
422 | ||
423 | msg->tracefile_size = htobe64(tracefile_size); | |
424 | msg->tracefile_count = htobe64(tracefile_count); | |
61ace1d3 | 425 | msg->trace_chunk_id = htobe64(trace_archive_id); |
2f21a469 JR |
426 | |
427 | /* Send command */ | |
428 | ret = send_command(rsock, RELAYD_ADD_STREAM, (void *) msg, msg_length, 0); | |
429 | if (ret < 0) { | |
430 | goto error; | |
431 | } | |
432 | ret = 0; | |
433 | error: | |
434 | free(msg); | |
435 | return ret; | |
436 | } | |
437 | ||
00e2e675 DG |
438 | /* |
439 | * Add stream on the relayd and assign stream handle to the stream_id argument. | |
440 | * | |
441 | * On success return 0 else return ret_code negative value. | |
442 | */ | |
6151a90f | 443 | int relayd_add_stream(struct lttcomm_relayd_sock *rsock, const char *channel_name, |
0f907de1 | 444 | const char *pathname, uint64_t *stream_id, |
0b50e4b3 | 445 | uint64_t tracefile_size, uint64_t tracefile_count, |
e5148e25 | 446 | struct lttng_trace_chunk *trace_chunk) |
00e2e675 DG |
447 | { |
448 | int ret; | |
00e2e675 DG |
449 | struct lttcomm_relayd_status_stream reply; |
450 | ||
451 | /* Code flow error. Safety net. */ | |
6151a90f | 452 | assert(rsock); |
00e2e675 DG |
453 | assert(channel_name); |
454 | assert(pathname); | |
455 | ||
456 | DBG("Relayd adding stream for channel name %s", channel_name); | |
457 | ||
0f907de1 JD |
458 | /* Compat with relayd 2.1 */ |
459 | if (rsock->minor == 1) { | |
2f21a469 | 460 | /* For 2.1 */ |
e5148e25 | 461 | assert(!trace_chunk); |
2f21a469 JR |
462 | ret = relayd_add_stream_2_1(rsock, channel_name, pathname); |
463 | ||
464 | } else if (rsock->minor > 1 && rsock->minor < 11) { | |
465 | /* From 2.2 to 2.10 */ | |
e5148e25 | 466 | assert(!trace_chunk); |
2f21a469 JR |
467 | ret = relayd_add_stream_2_2(rsock, channel_name, pathname, |
468 | tracefile_size, tracefile_count); | |
0f907de1 | 469 | } else { |
e5148e25 JG |
470 | enum lttng_trace_chunk_status chunk_status; |
471 | uint64_t chunk_id; | |
472 | ||
473 | assert(trace_chunk); | |
474 | chunk_status = lttng_trace_chunk_get_id(trace_chunk, | |
475 | &chunk_id); | |
476 | assert(chunk_status == LTTNG_TRACE_CHUNK_STATUS_OK); | |
477 | ||
2f21a469 JR |
478 | /* From 2.11 to ...*/ |
479 | ret = relayd_add_stream_2_11(rsock, channel_name, pathname, | |
6f768002 | 480 | tracefile_size, tracefile_count, |
e5148e25 | 481 | chunk_id); |
2f21a469 | 482 | } |
0f907de1 | 483 | |
2f21a469 JR |
484 | if (ret) { |
485 | ret = -1; | |
486 | goto error; | |
00e2e675 DG |
487 | } |
488 | ||
633d0084 | 489 | /* Waiting for reply */ |
6151a90f | 490 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
00e2e675 DG |
491 | if (ret < 0) { |
492 | goto error; | |
493 | } | |
494 | ||
495 | /* Back to host bytes order. */ | |
496 | reply.handle = be64toh(reply.handle); | |
497 | reply.ret_code = be32toh(reply.ret_code); | |
498 | ||
499 | /* Return session id or negative ret code. */ | |
f73fabfd | 500 | if (reply.ret_code != LTTNG_OK) { |
bb63afd9 DG |
501 | ret = -1; |
502 | ERR("Relayd add stream replied error %d", reply.ret_code); | |
00e2e675 DG |
503 | } else { |
504 | /* Success */ | |
505 | ret = 0; | |
506 | *stream_id = reply.handle; | |
507 | } | |
508 | ||
77c7c900 | 509 | DBG("Relayd stream added successfully with handle %" PRIu64, |
2f21a469 | 510 | reply.handle); |
00e2e675 DG |
511 | |
512 | error: | |
513 | return ret; | |
514 | } | |
515 | ||
a4baae1b JD |
516 | /* |
517 | * Inform the relay that all the streams for the current channel has been sent. | |
518 | * | |
519 | * On success return 0 else return ret_code negative value. | |
520 | */ | |
521 | int relayd_streams_sent(struct lttcomm_relayd_sock *rsock) | |
522 | { | |
523 | int ret; | |
524 | struct lttcomm_relayd_generic_reply reply; | |
525 | ||
526 | /* Code flow error. Safety net. */ | |
527 | assert(rsock); | |
528 | ||
529 | DBG("Relayd sending streams sent."); | |
530 | ||
531 | /* This feature was introduced in 2.4, ignore it for earlier versions. */ | |
532 | if (rsock->minor < 4) { | |
533 | ret = 0; | |
534 | goto end; | |
535 | } | |
536 | ||
537 | /* Send command */ | |
538 | ret = send_command(rsock, RELAYD_STREAMS_SENT, NULL, 0, 0); | |
539 | if (ret < 0) { | |
540 | goto error; | |
541 | } | |
542 | ||
543 | /* Waiting for reply */ | |
544 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); | |
545 | if (ret < 0) { | |
546 | goto error; | |
547 | } | |
548 | ||
549 | /* Back to host bytes order. */ | |
550 | reply.ret_code = be32toh(reply.ret_code); | |
551 | ||
552 | /* Return session id or negative ret code. */ | |
553 | if (reply.ret_code != LTTNG_OK) { | |
554 | ret = -1; | |
555 | ERR("Relayd streams sent replied error %d", reply.ret_code); | |
556 | goto error; | |
557 | } else { | |
558 | /* Success */ | |
559 | ret = 0; | |
560 | } | |
561 | ||
562 | DBG("Relayd streams sent success"); | |
563 | ||
564 | error: | |
565 | end: | |
566 | return ret; | |
567 | } | |
568 | ||
00e2e675 DG |
569 | /* |
570 | * Check version numbers on the relayd. | |
d4519fa3 JD |
571 | * If major versions are compatible, we assign minor_to_use to the |
572 | * minor version of the procotol we are going to use for this session. | |
00e2e675 | 573 | * |
67d5aa28 JD |
574 | * Return 0 if the two daemons are compatible, LTTNG_ERR_RELAYD_VERSION_FAIL |
575 | * otherwise, or a negative value on network errors. | |
00e2e675 | 576 | */ |
6151a90f | 577 | int relayd_version_check(struct lttcomm_relayd_sock *rsock) |
00e2e675 DG |
578 | { |
579 | int ret; | |
092b6259 | 580 | struct lttcomm_relayd_version msg; |
00e2e675 DG |
581 | |
582 | /* Code flow error. Safety net. */ | |
6151a90f | 583 | assert(rsock); |
00e2e675 | 584 | |
6151a90f JD |
585 | DBG("Relayd version check for major.minor %u.%u", rsock->major, |
586 | rsock->minor); | |
00e2e675 | 587 | |
53efb85a | 588 | memset(&msg, 0, sizeof(msg)); |
092b6259 | 589 | /* Prepare network byte order before transmission. */ |
6151a90f JD |
590 | msg.major = htobe32(rsock->major); |
591 | msg.minor = htobe32(rsock->minor); | |
092b6259 | 592 | |
00e2e675 | 593 | /* Send command */ |
6151a90f | 594 | ret = send_command(rsock, RELAYD_VERSION, (void *) &msg, sizeof(msg), 0); |
00e2e675 DG |
595 | if (ret < 0) { |
596 | goto error; | |
597 | } | |
598 | ||
20275fe8 | 599 | /* Receive response */ |
6151a90f | 600 | ret = recv_reply(rsock, (void *) &msg, sizeof(msg)); |
00e2e675 DG |
601 | if (ret < 0) { |
602 | goto error; | |
603 | } | |
604 | ||
605 | /* Set back to host bytes order */ | |
092b6259 DG |
606 | msg.major = be32toh(msg.major); |
607 | msg.minor = be32toh(msg.minor); | |
608 | ||
609 | /* | |
610 | * Only validate the major version. If the other side is higher, | |
611 | * communication is not possible. Only major version equal can talk to each | |
612 | * other. If the minor version differs, the lowest version is used by both | |
613 | * sides. | |
092b6259 | 614 | */ |
6151a90f | 615 | if (msg.major != rsock->major) { |
d4519fa3 | 616 | /* Not compatible */ |
67d5aa28 | 617 | ret = LTTNG_ERR_RELAYD_VERSION_FAIL; |
d4519fa3 | 618 | DBG2("Relayd version is NOT compatible. Relayd version %u != %u (us)", |
6151a90f | 619 | msg.major, rsock->major); |
092b6259 | 620 | goto error; |
00e2e675 DG |
621 | } |
622 | ||
092b6259 | 623 | /* |
6151a90f JD |
624 | * If the relayd's minor version is higher, it will adapt to our version so |
625 | * we can continue to use the latest relayd communication data structure. | |
626 | * If the received minor version is higher, the relayd should adapt to us. | |
092b6259 | 627 | */ |
6151a90f JD |
628 | if (rsock->minor > msg.minor) { |
629 | rsock->minor = msg.minor; | |
d4519fa3 | 630 | } |
092b6259 | 631 | |
d4519fa3 JD |
632 | /* Version number compatible */ |
633 | DBG2("Relayd version is compatible, using protocol version %u.%u", | |
6151a90f | 634 | rsock->major, rsock->minor); |
d4519fa3 | 635 | ret = 0; |
00e2e675 DG |
636 | |
637 | error: | |
638 | return ret; | |
639 | } | |
640 | ||
00e2e675 DG |
641 | /* |
642 | * Add stream on the relayd and assign stream handle to the stream_id argument. | |
643 | * | |
644 | * On success return 0 else return ret_code negative value. | |
645 | */ | |
6151a90f | 646 | int relayd_send_metadata(struct lttcomm_relayd_sock *rsock, size_t len) |
00e2e675 DG |
647 | { |
648 | int ret; | |
649 | ||
650 | /* Code flow error. Safety net. */ | |
6151a90f | 651 | assert(rsock); |
00e2e675 | 652 | |
77c7c900 | 653 | DBG("Relayd sending metadata of size %zu", len); |
00e2e675 DG |
654 | |
655 | /* Send command */ | |
6151a90f | 656 | ret = send_command(rsock, RELAYD_SEND_METADATA, NULL, len, 0); |
00e2e675 DG |
657 | if (ret < 0) { |
658 | goto error; | |
659 | } | |
660 | ||
661 | DBG2("Relayd metadata added successfully"); | |
662 | ||
663 | /* | |
664 | * After that call, the metadata data MUST be sent to the relayd so the | |
665 | * receive size on the other end matches the len of the metadata packet | |
633d0084 | 666 | * header. This is why we don't wait for a reply here. |
00e2e675 DG |
667 | */ |
668 | ||
669 | error: | |
670 | return ret; | |
671 | } | |
672 | ||
673 | /* | |
6151a90f | 674 | * Connect to relay daemon with an allocated lttcomm_relayd_sock. |
00e2e675 | 675 | */ |
6151a90f | 676 | int relayd_connect(struct lttcomm_relayd_sock *rsock) |
00e2e675 DG |
677 | { |
678 | /* Code flow error. Safety net. */ | |
6151a90f | 679 | assert(rsock); |
00e2e675 | 680 | |
f96e4545 MD |
681 | if (!rsock->sock.ops) { |
682 | /* | |
683 | * Attempting a connect on a non-initialized socket. | |
684 | */ | |
685 | return -ECONNRESET; | |
686 | } | |
687 | ||
00e2e675 DG |
688 | DBG3("Relayd connect ..."); |
689 | ||
6151a90f | 690 | return rsock->sock.ops->connect(&rsock->sock); |
00e2e675 DG |
691 | } |
692 | ||
693 | /* | |
6151a90f | 694 | * Close relayd socket with an allocated lttcomm_relayd_sock. |
ffe60014 DG |
695 | * |
696 | * If no socket operations are found, simply return 0 meaning that everything | |
697 | * is fine. Without operations, the socket can not possibly be opened or used. | |
698 | * This is possible if the socket was allocated but not created. However, the | |
699 | * caller could simply use it to store a valid file descriptor for instance | |
700 | * passed over a Unix socket and call this to cleanup but still without a valid | |
701 | * ops pointer. | |
702 | * | |
703 | * Return the close returned value. On error, a negative value is usually | |
704 | * returned back from close(2). | |
00e2e675 | 705 | */ |
6151a90f | 706 | int relayd_close(struct lttcomm_relayd_sock *rsock) |
00e2e675 | 707 | { |
ffe60014 DG |
708 | int ret; |
709 | ||
00e2e675 | 710 | /* Code flow error. Safety net. */ |
6151a90f | 711 | assert(rsock); |
00e2e675 | 712 | |
ffe60014 | 713 | /* An invalid fd is fine, return success. */ |
6151a90f | 714 | if (rsock->sock.fd < 0) { |
ffe60014 DG |
715 | ret = 0; |
716 | goto end; | |
717 | } | |
718 | ||
6151a90f | 719 | DBG3("Relayd closing socket %d", rsock->sock.fd); |
00e2e675 | 720 | |
6151a90f JD |
721 | if (rsock->sock.ops) { |
722 | ret = rsock->sock.ops->close(&rsock->sock); | |
ffe60014 DG |
723 | } else { |
724 | /* Default call if no specific ops found. */ | |
6151a90f | 725 | ret = close(rsock->sock.fd); |
ffe60014 DG |
726 | if (ret < 0) { |
727 | PERROR("relayd_close default close"); | |
728 | } | |
729 | } | |
f96e4545 | 730 | rsock->sock.fd = -1; |
ffe60014 DG |
731 | |
732 | end: | |
733 | return ret; | |
00e2e675 DG |
734 | } |
735 | ||
736 | /* | |
737 | * Send data header structure to the relayd. | |
738 | */ | |
6151a90f | 739 | int relayd_send_data_hdr(struct lttcomm_relayd_sock *rsock, |
00e2e675 DG |
740 | struct lttcomm_relayd_data_hdr *hdr, size_t size) |
741 | { | |
742 | int ret; | |
743 | ||
744 | /* Code flow error. Safety net. */ | |
6151a90f | 745 | assert(rsock); |
00e2e675 DG |
746 | assert(hdr); |
747 | ||
f96e4545 MD |
748 | if (rsock->sock.fd < 0) { |
749 | return -ECONNRESET; | |
750 | } | |
751 | ||
8fd623e0 | 752 | DBG3("Relayd sending data header of size %zu", size); |
00e2e675 DG |
753 | |
754 | /* Again, safety net */ | |
755 | if (size == 0) { | |
756 | size = sizeof(struct lttcomm_relayd_data_hdr); | |
757 | } | |
758 | ||
759 | /* Only send data header. */ | |
6151a90f | 760 | ret = rsock->sock.ops->sendmsg(&rsock->sock, hdr, size, 0); |
00e2e675 | 761 | if (ret < 0) { |
8994307f | 762 | ret = -errno; |
00e2e675 DG |
763 | goto error; |
764 | } | |
765 | ||
766 | /* | |
767 | * The data MUST be sent right after that command for the receive on the | |
768 | * other end to match the size in the header. | |
769 | */ | |
770 | ||
771 | error: | |
772 | return ret; | |
773 | } | |
173af62f DG |
774 | |
775 | /* | |
776 | * Send close stream command to the relayd. | |
777 | */ | |
6151a90f | 778 | int relayd_send_close_stream(struct lttcomm_relayd_sock *rsock, uint64_t stream_id, |
173af62f DG |
779 | uint64_t last_net_seq_num) |
780 | { | |
781 | int ret; | |
782 | struct lttcomm_relayd_close_stream msg; | |
783 | struct lttcomm_relayd_generic_reply reply; | |
784 | ||
785 | /* Code flow error. Safety net. */ | |
6151a90f | 786 | assert(rsock); |
173af62f | 787 | |
77c7c900 | 788 | DBG("Relayd closing stream id %" PRIu64, stream_id); |
173af62f | 789 | |
53efb85a | 790 | memset(&msg, 0, sizeof(msg)); |
173af62f 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_CLOSE_STREAM, (void *) &msg, sizeof(msg), 0); |
173af62f DG |
796 | if (ret < 0) { |
797 | goto error; | |
798 | } | |
799 | ||
20275fe8 | 800 | /* Receive response */ |
6151a90f | 801 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
173af62f DG |
802 | if (ret < 0) { |
803 | goto error; | |
804 | } | |
805 | ||
806 | reply.ret_code = be32toh(reply.ret_code); | |
807 | ||
808 | /* Return session id or negative ret code. */ | |
f73fabfd | 809 | if (reply.ret_code != LTTNG_OK) { |
bb63afd9 DG |
810 | ret = -1; |
811 | ERR("Relayd close stream replied error %d", reply.ret_code); | |
173af62f DG |
812 | } else { |
813 | /* Success */ | |
814 | ret = 0; | |
815 | } | |
816 | ||
77c7c900 | 817 | DBG("Relayd close stream id %" PRIu64 " successfully", stream_id); |
173af62f DG |
818 | |
819 | error: | |
820 | return ret; | |
821 | } | |
c8f59ee5 DG |
822 | |
823 | /* | |
824 | * Check for data availability for a given stream id. | |
825 | * | |
6d805429 | 826 | * Return 0 if NOT pending, 1 if so and a negative value on error. |
c8f59ee5 | 827 | */ |
6151a90f | 828 | int relayd_data_pending(struct lttcomm_relayd_sock *rsock, uint64_t stream_id, |
c8f59ee5 DG |
829 | uint64_t last_net_seq_num) |
830 | { | |
831 | int ret; | |
6d805429 | 832 | struct lttcomm_relayd_data_pending msg; |
c8f59ee5 DG |
833 | struct lttcomm_relayd_generic_reply reply; |
834 | ||
835 | /* Code flow error. Safety net. */ | |
6151a90f | 836 | assert(rsock); |
c8f59ee5 | 837 | |
6d805429 | 838 | DBG("Relayd data pending for stream id %" PRIu64, stream_id); |
c8f59ee5 | 839 | |
53efb85a | 840 | memset(&msg, 0, sizeof(msg)); |
c8f59ee5 DG |
841 | msg.stream_id = htobe64(stream_id); |
842 | msg.last_net_seq_num = htobe64(last_net_seq_num); | |
843 | ||
844 | /* Send command */ | |
6151a90f | 845 | ret = send_command(rsock, RELAYD_DATA_PENDING, (void *) &msg, |
c8f59ee5 DG |
846 | sizeof(msg), 0); |
847 | if (ret < 0) { | |
848 | goto error; | |
849 | } | |
850 | ||
20275fe8 | 851 | /* Receive response */ |
6151a90f | 852 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
c8f59ee5 DG |
853 | if (ret < 0) { |
854 | goto error; | |
855 | } | |
856 | ||
857 | reply.ret_code = be32toh(reply.ret_code); | |
858 | ||
859 | /* Return session id or negative ret code. */ | |
860 | if (reply.ret_code >= LTTNG_OK) { | |
bb63afd9 | 861 | ERR("Relayd data pending replied error %d", reply.ret_code); |
c8f59ee5 DG |
862 | } |
863 | ||
864 | /* At this point, the ret code is either 1 or 0 */ | |
865 | ret = reply.ret_code; | |
866 | ||
6d805429 | 867 | DBG("Relayd data is %s pending for stream id %" PRIu64, |
9dd26bb9 | 868 | ret == 1 ? "" : "NOT", stream_id); |
c8f59ee5 DG |
869 | |
870 | error: | |
871 | return ret; | |
872 | } | |
873 | ||
874 | /* | |
875 | * Check on the relayd side for a quiescent state on the control socket. | |
876 | */ | |
6151a90f | 877 | int relayd_quiescent_control(struct lttcomm_relayd_sock *rsock, |
ad7051c0 | 878 | uint64_t metadata_stream_id) |
c8f59ee5 DG |
879 | { |
880 | int ret; | |
ad7051c0 | 881 | struct lttcomm_relayd_quiescent_control msg; |
c8f59ee5 DG |
882 | struct lttcomm_relayd_generic_reply reply; |
883 | ||
884 | /* Code flow error. Safety net. */ | |
6151a90f | 885 | assert(rsock); |
c8f59ee5 DG |
886 | |
887 | DBG("Relayd checking quiescent control state"); | |
888 | ||
53efb85a | 889 | memset(&msg, 0, sizeof(msg)); |
ad7051c0 DG |
890 | msg.stream_id = htobe64(metadata_stream_id); |
891 | ||
c8f59ee5 | 892 | /* Send command */ |
6151a90f | 893 | ret = send_command(rsock, RELAYD_QUIESCENT_CONTROL, &msg, sizeof(msg), 0); |
c8f59ee5 DG |
894 | if (ret < 0) { |
895 | goto error; | |
896 | } | |
897 | ||
20275fe8 | 898 | /* Receive response */ |
6151a90f | 899 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
c8f59ee5 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 quiescent control replied error %d", reply.ret_code); | |
c8f59ee5 DG |
910 | goto error; |
911 | } | |
912 | ||
913 | /* Control socket is quiescent */ | |
6d805429 | 914 | return 0; |
c8f59ee5 DG |
915 | |
916 | error: | |
917 | return ret; | |
918 | } | |
f7079f67 DG |
919 | |
920 | /* | |
921 | * Begin a data pending command for a specific session id. | |
922 | */ | |
6151a90f | 923 | int relayd_begin_data_pending(struct lttcomm_relayd_sock *rsock, uint64_t id) |
f7079f67 DG |
924 | { |
925 | int ret; | |
926 | struct lttcomm_relayd_begin_data_pending msg; | |
927 | struct lttcomm_relayd_generic_reply reply; | |
928 | ||
929 | /* Code flow error. Safety net. */ | |
6151a90f | 930 | assert(rsock); |
f7079f67 DG |
931 | |
932 | DBG("Relayd begin data pending"); | |
933 | ||
53efb85a | 934 | memset(&msg, 0, sizeof(msg)); |
f7079f67 DG |
935 | msg.session_id = htobe64(id); |
936 | ||
937 | /* Send command */ | |
6151a90f | 938 | ret = send_command(rsock, RELAYD_BEGIN_DATA_PENDING, &msg, sizeof(msg), 0); |
f7079f67 DG |
939 | if (ret < 0) { |
940 | goto error; | |
941 | } | |
942 | ||
20275fe8 | 943 | /* Receive response */ |
6151a90f | 944 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
f7079f67 DG |
945 | if (ret < 0) { |
946 | goto error; | |
947 | } | |
948 | ||
949 | reply.ret_code = be32toh(reply.ret_code); | |
950 | ||
951 | /* Return session id or negative ret code. */ | |
952 | if (reply.ret_code != LTTNG_OK) { | |
bb63afd9 DG |
953 | ret = -1; |
954 | ERR("Relayd begin data pending replied error %d", reply.ret_code); | |
f7079f67 DG |
955 | goto error; |
956 | } | |
957 | ||
958 | return 0; | |
959 | ||
960 | error: | |
961 | return ret; | |
962 | } | |
963 | ||
964 | /* | |
965 | * End a data pending command for a specific session id. | |
966 | * | |
967 | * Return 0 on success and set is_data_inflight to 0 if no data is being | |
968 | * streamed or 1 if it is the case. | |
969 | */ | |
6151a90f | 970 | int relayd_end_data_pending(struct lttcomm_relayd_sock *rsock, uint64_t id, |
f7079f67 DG |
971 | unsigned int *is_data_inflight) |
972 | { | |
af6c30b5 | 973 | int ret, recv_ret; |
f7079f67 DG |
974 | struct lttcomm_relayd_end_data_pending msg; |
975 | struct lttcomm_relayd_generic_reply reply; | |
976 | ||
977 | /* Code flow error. Safety net. */ | |
6151a90f | 978 | assert(rsock); |
f7079f67 DG |
979 | |
980 | DBG("Relayd end data pending"); | |
981 | ||
53efb85a | 982 | memset(&msg, 0, sizeof(msg)); |
f7079f67 DG |
983 | msg.session_id = htobe64(id); |
984 | ||
985 | /* Send command */ | |
6151a90f | 986 | ret = send_command(rsock, RELAYD_END_DATA_PENDING, &msg, sizeof(msg), 0); |
f7079f67 DG |
987 | if (ret < 0) { |
988 | goto error; | |
989 | } | |
990 | ||
20275fe8 | 991 | /* Receive response */ |
6151a90f | 992 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
f7079f67 DG |
993 | if (ret < 0) { |
994 | goto error; | |
995 | } | |
996 | ||
af6c30b5 DG |
997 | recv_ret = be32toh(reply.ret_code); |
998 | if (recv_ret < 0) { | |
999 | ret = recv_ret; | |
f7079f67 DG |
1000 | goto error; |
1001 | } | |
1002 | ||
af6c30b5 | 1003 | *is_data_inflight = recv_ret; |
f7079f67 | 1004 | |
af6c30b5 | 1005 | DBG("Relayd end data pending is data inflight: %d", recv_ret); |
f7079f67 DG |
1006 | |
1007 | return 0; | |
1008 | ||
1009 | error: | |
1010 | return ret; | |
1011 | } | |
1c20f0e2 JD |
1012 | |
1013 | /* | |
1014 | * Send index to the relayd. | |
1015 | */ | |
1016 | int relayd_send_index(struct lttcomm_relayd_sock *rsock, | |
50adc264 | 1017 | struct ctf_packet_index *index, uint64_t relay_stream_id, |
1c20f0e2 JD |
1018 | uint64_t net_seq_num) |
1019 | { | |
1020 | int ret; | |
1021 | struct lttcomm_relayd_index msg; | |
1022 | struct lttcomm_relayd_generic_reply reply; | |
1023 | ||
1024 | /* Code flow error. Safety net. */ | |
1025 | assert(rsock); | |
1026 | ||
1027 | if (rsock->minor < 4) { | |
1028 | DBG("Not sending indexes before protocol 2.4"); | |
1029 | ret = 0; | |
1030 | goto error; | |
1031 | } | |
1032 | ||
1033 | DBG("Relayd sending index for stream ID %" PRIu64, relay_stream_id); | |
1034 | ||
53efb85a | 1035 | memset(&msg, 0, sizeof(msg)); |
1c20f0e2 JD |
1036 | msg.relay_stream_id = htobe64(relay_stream_id); |
1037 | msg.net_seq_num = htobe64(net_seq_num); | |
1038 | ||
1039 | /* The index is already in big endian. */ | |
1040 | msg.packet_size = index->packet_size; | |
1041 | msg.content_size = index->content_size; | |
1042 | msg.timestamp_begin = index->timestamp_begin; | |
1043 | msg.timestamp_end = index->timestamp_end; | |
1044 | msg.events_discarded = index->events_discarded; | |
1045 | msg.stream_id = index->stream_id; | |
1046 | ||
234cd636 JD |
1047 | if (rsock->minor >= 8) { |
1048 | msg.stream_instance_id = index->stream_instance_id; | |
1049 | msg.packet_seq_num = index->packet_seq_num; | |
1050 | } | |
1051 | ||
1c20f0e2 | 1052 | /* Send command */ |
f8f3885c MD |
1053 | ret = send_command(rsock, RELAYD_SEND_INDEX, &msg, |
1054 | lttcomm_relayd_index_len(lttng_to_index_major(rsock->major, | |
1055 | rsock->minor), | |
1056 | lttng_to_index_minor(rsock->major, rsock->minor)), | |
1057 | 0); | |
1c20f0e2 JD |
1058 | if (ret < 0) { |
1059 | goto error; | |
1060 | } | |
1061 | ||
1062 | /* Receive response */ | |
1063 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); | |
1064 | if (ret < 0) { | |
1065 | goto error; | |
1066 | } | |
1067 | ||
1068 | reply.ret_code = be32toh(reply.ret_code); | |
1069 | ||
1070 | /* Return session id or negative ret code. */ | |
1071 | if (reply.ret_code != LTTNG_OK) { | |
1072 | ret = -1; | |
1073 | ERR("Relayd send index replied error %d", reply.ret_code); | |
1074 | } else { | |
1075 | /* Success */ | |
1076 | ret = 0; | |
1077 | } | |
1078 | ||
1079 | error: | |
1080 | return ret; | |
1081 | } | |
93ec662e JD |
1082 | |
1083 | /* | |
1084 | * Ask the relay to reset the metadata trace file (regeneration). | |
1085 | */ | |
1086 | int relayd_reset_metadata(struct lttcomm_relayd_sock *rsock, | |
1087 | uint64_t stream_id, uint64_t version) | |
1088 | { | |
1089 | int ret; | |
1090 | struct lttcomm_relayd_reset_metadata msg; | |
1091 | struct lttcomm_relayd_generic_reply reply; | |
1092 | ||
1093 | /* Code flow error. Safety net. */ | |
1094 | assert(rsock); | |
1095 | ||
1096 | /* Should have been prevented by the sessiond. */ | |
1097 | if (rsock->minor < 8) { | |
1098 | ERR("Metadata regeneration unsupported before 2.8"); | |
1099 | ret = -1; | |
1100 | goto error; | |
1101 | } | |
1102 | ||
1103 | DBG("Relayd reset metadata stream id %" PRIu64, stream_id); | |
1104 | ||
1105 | memset(&msg, 0, sizeof(msg)); | |
1106 | msg.stream_id = htobe64(stream_id); | |
1107 | msg.version = htobe64(version); | |
1108 | ||
1109 | /* Send command */ | |
1110 | ret = send_command(rsock, RELAYD_RESET_METADATA, (void *) &msg, sizeof(msg), 0); | |
1111 | if (ret < 0) { | |
1112 | goto error; | |
1113 | } | |
1114 | ||
1115 | /* Receive response */ | |
1116 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); | |
1117 | if (ret < 0) { | |
1118 | goto error; | |
1119 | } | |
1120 | ||
1121 | reply.ret_code = be32toh(reply.ret_code); | |
1122 | ||
1123 | /* Return session id or negative ret code. */ | |
1124 | if (reply.ret_code != LTTNG_OK) { | |
1125 | ret = -1; | |
1126 | ERR("Relayd reset metadata replied error %d", reply.ret_code); | |
1127 | } else { | |
1128 | /* Success */ | |
1129 | ret = 0; | |
1130 | } | |
1131 | ||
1132 | DBG("Relayd reset metadata stream id %" PRIu64 " successfully", stream_id); | |
1133 | ||
1134 | error: | |
1135 | return ret; | |
1136 | } | |
a1ae2ea5 | 1137 | |
84a93c08 | 1138 | int relayd_rotate_streams(struct lttcomm_relayd_sock *sock, |
1bfb0c63 | 1139 | unsigned int stream_count, const uint64_t *new_chunk_id, |
84a93c08 | 1140 | const struct relayd_stream_rotation_position *positions) |
d73bf3d7 JD |
1141 | { |
1142 | int ret; | |
84a93c08 JG |
1143 | unsigned int i; |
1144 | struct lttng_dynamic_buffer payload; | |
1145 | struct lttcomm_relayd_generic_reply reply = {}; | |
1146 | const struct lttcomm_relayd_rotate_streams msg = { | |
1147 | .stream_count = htobe32((uint32_t) stream_count), | |
1148 | .new_chunk_id = (typeof(msg.new_chunk_id)) { | |
1149 | .is_set = !!new_chunk_id, | |
1150 | .value = htobe64(new_chunk_id ? *new_chunk_id : 0), | |
1151 | }, | |
1152 | }; | |
1153 | char new_chunk_id_buf[MAX_INT_DEC_LEN(*new_chunk_id)] = {}; | |
1154 | const char *new_chunk_id_str; | |
d73bf3d7 | 1155 | |
84a93c08 | 1156 | lttng_dynamic_buffer_init(&payload); |
d73bf3d7 | 1157 | |
84a93c08 JG |
1158 | /* Code flow error. Safety net. */ |
1159 | assert(sock); | |
d73bf3d7 | 1160 | |
84a93c08 JG |
1161 | if (new_chunk_id) { |
1162 | ret = snprintf(new_chunk_id_buf, sizeof(new_chunk_id_buf), | |
1163 | "%" PRIu64, *new_chunk_id); | |
1164 | if (ret == -1 || ret >= sizeof(new_chunk_id_buf)) { | |
1165 | new_chunk_id_str = "formatting error"; | |
1166 | } else { | |
1167 | new_chunk_id_str = new_chunk_id_buf; | |
1168 | } | |
1169 | } else { | |
1170 | new_chunk_id_str = "none"; | |
d73bf3d7 JD |
1171 | } |
1172 | ||
84a93c08 JG |
1173 | DBG("Preparing \"rotate streams\" command payload: new_chunk_id = %s, stream_count = %u", |
1174 | new_chunk_id_str, stream_count); | |
d73bf3d7 | 1175 | |
84a93c08 JG |
1176 | ret = lttng_dynamic_buffer_append(&payload, &msg, sizeof(msg)); |
1177 | if (ret) { | |
1178 | ERR("Failed to allocate \"rotate streams\" command payload"); | |
d73bf3d7 JD |
1179 | goto error; |
1180 | } | |
1181 | ||
84a93c08 JG |
1182 | for (i = 0; i < stream_count; i++) { |
1183 | const struct relayd_stream_rotation_position *position = | |
1184 | &positions[i]; | |
1185 | const struct lttcomm_relayd_stream_rotation_position comm_position = { | |
1186 | .stream_id = htobe64(position->stream_id), | |
1187 | .rotate_at_seq_num = htobe64( | |
1188 | position->rotate_at_seq_num), | |
1189 | }; | |
1190 | ||
1191 | DBG("Rotate stream %" PRIu64 "at sequence number %" PRIu64, | |
1192 | position->stream_id, | |
1193 | position->rotate_at_seq_num); | |
1194 | ret = lttng_dynamic_buffer_append(&payload, &comm_position, | |
1195 | sizeof(comm_position)); | |
1196 | if (ret) { | |
1197 | ERR("Failed to allocate \"rotate streams\" command payload"); | |
1198 | goto error; | |
1199 | } | |
1200 | } | |
d73bf3d7 JD |
1201 | |
1202 | /* Send command. */ | |
84a93c08 JG |
1203 | ret = send_command(sock, RELAYD_ROTATE_STREAMS, payload.data, |
1204 | payload.size, 0); | |
d73bf3d7 | 1205 | if (ret < 0) { |
84a93c08 | 1206 | ERR("Failed to send \"rotate stream\" command"); |
d73bf3d7 JD |
1207 | goto error; |
1208 | } | |
1209 | ||
1210 | /* Receive response. */ | |
84a93c08 | 1211 | ret = recv_reply(sock, &reply, sizeof(reply)); |
d73bf3d7 | 1212 | if (ret < 0) { |
84a93c08 | 1213 | ERR("Failed to receive \"rotate streams\" command reply"); |
d73bf3d7 JD |
1214 | goto error; |
1215 | } | |
1216 | ||
1217 | reply.ret_code = be32toh(reply.ret_code); | |
d73bf3d7 JD |
1218 | if (reply.ret_code != LTTNG_OK) { |
1219 | ret = -1; | |
84a93c08 | 1220 | ERR("Relayd rotate streams replied error %d", reply.ret_code); |
d73bf3d7 JD |
1221 | } else { |
1222 | /* Success. */ | |
1223 | ret = 0; | |
84a93c08 | 1224 | DBG("Relayd rotated streams successfully"); |
d73bf3d7 JD |
1225 | } |
1226 | ||
1227 | error: | |
84a93c08 | 1228 | lttng_dynamic_buffer_reset(&payload); |
d73bf3d7 JD |
1229 | return ret; |
1230 | } | |
0ebdafe0 JG |
1231 | |
1232 | int relayd_create_trace_chunk(struct lttcomm_relayd_sock *sock, | |
1233 | struct lttng_trace_chunk *chunk) | |
1234 | { | |
1235 | int ret = 0; | |
1236 | enum lttng_trace_chunk_status status; | |
1237 | struct lttcomm_relayd_create_trace_chunk msg = {}; | |
1238 | struct lttcomm_relayd_generic_reply reply = {}; | |
1239 | struct lttng_dynamic_buffer payload; | |
1240 | uint64_t chunk_id; | |
1241 | time_t creation_timestamp; | |
1242 | const char *chunk_name; | |
1243 | size_t chunk_name_length; | |
d83dccf5 | 1244 | bool overridden_name; |
0ebdafe0 JG |
1245 | |
1246 | lttng_dynamic_buffer_init(&payload); | |
1247 | ||
1248 | status = lttng_trace_chunk_get_id(chunk, &chunk_id); | |
1249 | if (status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
1250 | ret = -1; | |
1251 | goto end; | |
1252 | } | |
1253 | ||
1254 | status = lttng_trace_chunk_get_creation_timestamp( | |
1255 | chunk, &creation_timestamp); | |
1256 | if (status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
1257 | ret = -1; | |
1258 | goto end; | |
1259 | } | |
1260 | ||
1261 | status = lttng_trace_chunk_get_name( | |
d83dccf5 | 1262 | chunk, &chunk_name, &overridden_name); |
0ebdafe0 JG |
1263 | if (status != LTTNG_TRACE_CHUNK_STATUS_OK && |
1264 | status != LTTNG_TRACE_CHUNK_STATUS_NONE) { | |
1265 | ret = -1; | |
1266 | goto end; | |
1267 | } | |
1268 | ||
d83dccf5 | 1269 | chunk_name_length = overridden_name ? (strlen(chunk_name) + 1) : 0; |
0ebdafe0 JG |
1270 | msg = (typeof(msg)){ |
1271 | .chunk_id = htobe64(chunk_id), | |
1272 | .creation_timestamp = htobe64((uint64_t) creation_timestamp), | |
1273 | .override_name_length = htobe32((uint32_t) chunk_name_length), | |
1274 | }; | |
1275 | ||
1276 | ret = lttng_dynamic_buffer_append(&payload, &msg, sizeof(msg)); | |
1277 | if (ret) { | |
1278 | goto end; | |
1279 | } | |
1280 | if (chunk_name_length) { | |
1281 | ret = lttng_dynamic_buffer_append( | |
1282 | &payload, chunk_name, chunk_name_length); | |
1283 | if (ret) { | |
1284 | goto end; | |
1285 | } | |
1286 | } | |
1287 | ||
6bbcff33 JG |
1288 | ret = send_command(sock, RELAYD_CREATE_TRACE_CHUNK, payload.data, |
1289 | payload.size, 0); | |
0ebdafe0 JG |
1290 | if (ret < 0) { |
1291 | ERR("Failed to send trace chunk creation command to relay daemon"); | |
1292 | goto end; | |
1293 | } | |
1294 | ||
1295 | ret = recv_reply(sock, &reply, sizeof(reply)); | |
1296 | if (ret < 0) { | |
1297 | ERR("Failed to receive relay daemon trace chunk creation command reply"); | |
1298 | goto end; | |
1299 | } | |
1300 | ||
1301 | reply.ret_code = be32toh(reply.ret_code); | |
1302 | if (reply.ret_code != LTTNG_OK) { | |
1303 | ret = -1; | |
1304 | ERR("Relayd trace chunk create replied error %d", | |
1305 | reply.ret_code); | |
1306 | } else { | |
1307 | ret = 0; | |
1308 | DBG("Relayd successfully created trace chunk: chunk_id = %" PRIu64, | |
1309 | chunk_id); | |
1310 | } | |
1311 | ||
1312 | end: | |
1313 | lttng_dynamic_buffer_reset(&payload); | |
1314 | return ret; | |
1315 | } | |
6bbcff33 JG |
1316 | |
1317 | int relayd_close_trace_chunk(struct lttcomm_relayd_sock *sock, | |
1318 | struct lttng_trace_chunk *chunk) | |
1319 | { | |
1320 | int ret = 0; | |
1321 | enum lttng_trace_chunk_status status; | |
1322 | struct lttcomm_relayd_close_trace_chunk msg = {}; | |
1323 | struct lttcomm_relayd_generic_reply reply = {}; | |
1324 | uint64_t chunk_id; | |
1325 | time_t close_timestamp; | |
1326 | LTTNG_OPTIONAL(enum lttng_trace_chunk_command_type) close_command = {}; | |
1327 | ||
1328 | status = lttng_trace_chunk_get_id(chunk, &chunk_id); | |
1329 | if (status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
1330 | ERR("Failed to get trace chunk id"); | |
1331 | ret = -1; | |
1332 | goto end; | |
1333 | } | |
1334 | ||
1335 | status = lttng_trace_chunk_get_close_timestamp(chunk, &close_timestamp); | |
1336 | if (status != LTTNG_TRACE_CHUNK_STATUS_OK) { | |
1337 | ERR("Failed to get trace chunk close timestamp"); | |
1338 | ret = -1; | |
1339 | goto end; | |
1340 | } | |
1341 | ||
1342 | status = lttng_trace_chunk_get_close_command(chunk, | |
1343 | &close_command.value); | |
1344 | switch (status) { | |
1345 | case LTTNG_TRACE_CHUNK_STATUS_OK: | |
1346 | close_command.is_set = 1; | |
1347 | break; | |
1348 | case LTTNG_TRACE_CHUNK_STATUS_NONE: | |
1349 | break; | |
1350 | default: | |
1351 | ERR("Failed to get trace chunk close command"); | |
1352 | ret = -1; | |
1353 | goto end; | |
1354 | } | |
1355 | ||
1356 | msg = (typeof(msg)){ | |
1357 | .chunk_id = htobe64(chunk_id), | |
1358 | .close_timestamp = htobe64((uint64_t) close_timestamp), | |
1359 | .close_command = { | |
1360 | .value = htobe32((uint32_t) close_command.value), | |
1361 | .is_set = close_command.is_set, | |
1362 | }, | |
1363 | }; | |
1364 | ||
1365 | ret = send_command(sock, RELAYD_CLOSE_TRACE_CHUNK, &msg, sizeof(msg), | |
1366 | 0); | |
1367 | if (ret < 0) { | |
1368 | ERR("Failed to send trace chunk close command to relay daemon"); | |
1369 | goto end; | |
1370 | } | |
1371 | ||
1372 | ret = recv_reply(sock, &reply, sizeof(reply)); | |
1373 | if (ret < 0) { | |
1374 | ERR("Failed to receive relay daemon trace chunk close command reply"); | |
1375 | goto end; | |
1376 | } | |
1377 | ||
1378 | reply.ret_code = be32toh(reply.ret_code); | |
1379 | if (reply.ret_code != LTTNG_OK) { | |
1380 | ret = -1; | |
1381 | ERR("Relayd trace chunk close replied error %d", | |
1382 | reply.ret_code); | |
1383 | } else { | |
1384 | ret = 0; | |
1385 | DBG("Relayd successfully closed trace chunk: chunk_id = %" PRIu64, | |
1386 | chunk_id); | |
1387 | } | |
1388 | end: | |
1389 | return ret; | |
1390 | } | |
84a93c08 JG |
1391 | |
1392 | int relayd_trace_chunk_exists(struct lttcomm_relayd_sock *sock, | |
1393 | uint64_t chunk_id, bool *chunk_exists) | |
1394 | { | |
1395 | int ret = 0; | |
1396 | struct lttcomm_relayd_trace_chunk_exists msg = {}; | |
1397 | struct lttcomm_relayd_trace_chunk_exists_reply reply = {}; | |
1398 | ||
1399 | msg = (typeof(msg)){ | |
1400 | .chunk_id = htobe64(chunk_id), | |
1401 | }; | |
1402 | ||
1403 | ret = send_command(sock, RELAYD_TRACE_CHUNK_EXISTS, &msg, sizeof(msg), | |
1404 | 0); | |
1405 | if (ret < 0) { | |
1406 | ERR("Failed to send trace chunk exists command to relay daemon"); | |
1407 | goto end; | |
1408 | } | |
1409 | ||
1410 | ret = recv_reply(sock, &reply, sizeof(reply)); | |
1411 | if (ret < 0) { | |
1412 | ERR("Failed to receive relay daemon trace chunk close command reply"); | |
1413 | goto end; | |
1414 | } | |
1415 | ||
1416 | reply.generic.ret_code = be32toh(reply.generic.ret_code); | |
1417 | if (reply.generic.ret_code != LTTNG_OK) { | |
1418 | ret = -1; | |
1419 | ERR("Relayd trace chunk close replied error %d", | |
1420 | reply.generic.ret_code); | |
1421 | } else { | |
1422 | ret = 0; | |
1423 | DBG("Relayd successfully checked trace chunk existence: chunk_id = %" PRIu64 | |
1424 | ", exists = %s", chunk_id, | |
1425 | reply.trace_chunk_exists ? "true" : "false"); | |
1426 | *chunk_exists = !!reply.trace_chunk_exists; | |
1427 | } | |
1428 | end: | |
1429 | return ret; | |
1430 | } |