| 1 | /* |
| 2 | * Copyright (C) 2012 - David Goulet <dgoulet@efficios.com> |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify it |
| 5 | * under the terms of the GNU General Public License, version 2 only, as |
| 6 | * published by the Free Software Foundation. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, but WITHOUT |
| 9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 11 | * more details. |
| 12 | * |
| 13 | * You should have received a copy of the GNU General Public License along with |
| 14 | * this program; if not, write to the Free Software Foundation, Inc., 51 |
| 15 | * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 16 | */ |
| 17 | |
| 18 | #define _LGPL_SOURCE |
| 19 | #include <assert.h> |
| 20 | #include <stdio.h> |
| 21 | #include <stdlib.h> |
| 22 | #include <string.h> |
| 23 | #include <sys/stat.h> |
| 24 | #include <inttypes.h> |
| 25 | |
| 26 | #include <common/common.h> |
| 27 | #include <common/defaults.h> |
| 28 | #include <common/compat/endian.h> |
| 29 | #include <common/compat/string.h> |
| 30 | #include <common/sessiond-comm/relayd.h> |
| 31 | #include <common/index/ctf-index.h> |
| 32 | |
| 33 | #include "relayd.h" |
| 34 | |
| 35 | /* |
| 36 | * Send command. Fill up the header and append the data. |
| 37 | */ |
| 38 | static int send_command(struct lttcomm_relayd_sock *rsock, |
| 39 | enum lttcomm_relayd_command cmd, const void *data, size_t size, |
| 40 | int flags) |
| 41 | { |
| 42 | int ret; |
| 43 | struct lttcomm_relayd_hdr header; |
| 44 | char *buf; |
| 45 | uint64_t buf_size = sizeof(header); |
| 46 | |
| 47 | if (rsock->sock.fd < 0) { |
| 48 | return -ECONNRESET; |
| 49 | } |
| 50 | |
| 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 | |
| 62 | memset(&header, 0, sizeof(header)); |
| 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 | |
| 76 | DBG3("Relayd sending command %d of size %" PRIu64, (int) cmd, buf_size); |
| 77 | ret = rsock->sock.ops->sendmsg(&rsock->sock, buf, buf_size, flags); |
| 78 | if (ret < 0) { |
| 79 | PERROR("Failed to send command %d of size %" PRIu64, |
| 80 | (int) cmd, buf_size); |
| 81 | ret = -errno; |
| 82 | goto error; |
| 83 | } |
| 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 | */ |
| 94 | static int recv_reply(struct lttcomm_relayd_sock *rsock, void *data, size_t size) |
| 95 | { |
| 96 | int ret; |
| 97 | |
| 98 | if (rsock->sock.fd < 0) { |
| 99 | return -ECONNRESET; |
| 100 | } |
| 101 | |
| 102 | DBG3("Relayd waiting for reply of size %zu", size); |
| 103 | |
| 104 | ret = rsock->sock.ops->recvmsg(&rsock->sock, data, size, 0); |
| 105 | if (ret <= 0 || ret != size) { |
| 106 | if (ret == 0) { |
| 107 | /* Orderly shutdown. */ |
| 108 | DBG("Socket %d has performed an orderly shutdown", rsock->sock.fd); |
| 109 | } else { |
| 110 | DBG("Receiving reply failed on sock %d for size %zu with ret %d", |
| 111 | rsock->sock.fd, size, ret); |
| 112 | } |
| 113 | /* Always return -1 here and the caller can use errno. */ |
| 114 | ret = -1; |
| 115 | goto error; |
| 116 | } |
| 117 | |
| 118 | error: |
| 119 | return ret; |
| 120 | } |
| 121 | |
| 122 | /* |
| 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 | const char *session_name, const char *hostname, |
| 130 | int session_live_timer, unsigned int snapshot, |
| 131 | uint64_t sessiond_session_id, const lttng_uuid sessiond_uuid) |
| 132 | { |
| 133 | int ret; |
| 134 | struct lttcomm_relayd_create_session_2_11 *msg = NULL; |
| 135 | size_t session_name_len; |
| 136 | size_t hostname_len; |
| 137 | size_t msg_length; |
| 138 | |
| 139 | /* The two names are sent with a '\0' delimiter between them. */ |
| 140 | session_name_len = strlen(session_name) + 1; |
| 141 | hostname_len = strlen(hostname) + 1; |
| 142 | |
| 143 | msg_length = sizeof(*msg) + session_name_len + hostname_len; |
| 144 | msg = zmalloc(msg_length); |
| 145 | if (!msg) { |
| 146 | PERROR("zmalloc create_session_2_11 command message"); |
| 147 | ret = -1; |
| 148 | goto error; |
| 149 | } |
| 150 | |
| 151 | assert(session_name_len <= UINT32_MAX); |
| 152 | msg->session_name_len = htobe32(session_name_len); |
| 153 | |
| 154 | assert(hostname_len <= UINT32_MAX); |
| 155 | msg->hostname_len = htobe32(hostname_len); |
| 156 | |
| 157 | if (lttng_strncpy(msg->names, session_name, session_name_len)) { |
| 158 | ret = -1; |
| 159 | goto error; |
| 160 | } |
| 161 | if (lttng_strncpy(msg->names + session_name_len, hostname, hostname_len)) { |
| 162 | ret = -1; |
| 163 | goto error; |
| 164 | } |
| 165 | |
| 166 | msg->live_timer = htobe32(session_live_timer); |
| 167 | msg->snapshot = !!snapshot; |
| 168 | |
| 169 | lttng_uuid_copy(msg->sessiond_uuid, sessiond_uuid); |
| 170 | msg->session_id = htobe64(sessiond_session_id); |
| 171 | |
| 172 | /* Send command */ |
| 173 | ret = send_command(rsock, RELAYD_CREATE_SESSION, msg, msg_length, 0); |
| 174 | if (ret < 0) { |
| 175 | goto error; |
| 176 | } |
| 177 | error: |
| 178 | free(msg); |
| 179 | return ret; |
| 180 | } |
| 181 | /* |
| 182 | * From 2.4 to 2.10, RELAYD_CREATE_SESSION takes additional parameters to |
| 183 | * support the live reading capability. |
| 184 | */ |
| 185 | static int relayd_create_session_2_4(struct lttcomm_relayd_sock *rsock, |
| 186 | const char *session_name, const char *hostname, |
| 187 | int session_live_timer, unsigned int snapshot) |
| 188 | { |
| 189 | int ret; |
| 190 | struct lttcomm_relayd_create_session_2_4 msg; |
| 191 | |
| 192 | if (lttng_strncpy(msg.session_name, session_name, |
| 193 | sizeof(msg.session_name))) { |
| 194 | ret = -1; |
| 195 | goto error; |
| 196 | } |
| 197 | if (lttng_strncpy(msg.hostname, hostname, sizeof(msg.hostname))) { |
| 198 | ret = -1; |
| 199 | goto error; |
| 200 | } |
| 201 | msg.live_timer = htobe32(session_live_timer); |
| 202 | msg.snapshot = htobe32(snapshot); |
| 203 | |
| 204 | /* Send command */ |
| 205 | ret = send_command(rsock, RELAYD_CREATE_SESSION, &msg, sizeof(msg), 0); |
| 206 | if (ret < 0) { |
| 207 | goto error; |
| 208 | } |
| 209 | |
| 210 | error: |
| 211 | return ret; |
| 212 | } |
| 213 | |
| 214 | /* |
| 215 | * RELAYD_CREATE_SESSION from 2.1 to 2.3. |
| 216 | */ |
| 217 | static int relayd_create_session_2_1(struct lttcomm_relayd_sock *rsock) |
| 218 | { |
| 219 | int ret; |
| 220 | |
| 221 | /* Send command */ |
| 222 | ret = send_command(rsock, RELAYD_CREATE_SESSION, NULL, 0, 0); |
| 223 | if (ret < 0) { |
| 224 | goto error; |
| 225 | } |
| 226 | |
| 227 | error: |
| 228 | return ret; |
| 229 | } |
| 230 | |
| 231 | /* |
| 232 | * Send a RELAYD_CREATE_SESSION command to the relayd with the given socket and |
| 233 | * set session_id of the relayd if we have a successful reply from the relayd. |
| 234 | * |
| 235 | * On success, return 0 else a negative value which is either an errno error or |
| 236 | * a lttng error code from the relayd. |
| 237 | */ |
| 238 | int relayd_create_session(struct lttcomm_relayd_sock *rsock, |
| 239 | uint64_t *relayd_session_id, |
| 240 | const char *session_name, const char *hostname, |
| 241 | int session_live_timer, |
| 242 | unsigned int snapshot, uint64_t sessiond_session_id, |
| 243 | const lttng_uuid sessiond_uuid) |
| 244 | { |
| 245 | int ret; |
| 246 | struct lttcomm_relayd_status_session reply; |
| 247 | |
| 248 | assert(rsock); |
| 249 | assert(relayd_session_id); |
| 250 | |
| 251 | DBG("Relayd create session"); |
| 252 | |
| 253 | if (rsock->minor < 4) { |
| 254 | /* From 2.1 to 2.3 */ |
| 255 | ret = relayd_create_session_2_1(rsock); |
| 256 | } else if (rsock->minor >= 4 && rsock->minor < 11) { |
| 257 | /* From 2.4 to 2.10 */ |
| 258 | ret = relayd_create_session_2_4(rsock, session_name, |
| 259 | hostname, session_live_timer, snapshot); |
| 260 | } else { |
| 261 | /* From 2.11 to ... */ |
| 262 | ret = relayd_create_session_2_11(rsock, session_name, |
| 263 | hostname, session_live_timer, snapshot, |
| 264 | sessiond_session_id, sessiond_uuid); |
| 265 | } |
| 266 | |
| 267 | if (ret < 0) { |
| 268 | goto error; |
| 269 | } |
| 270 | |
| 271 | /* Receive response */ |
| 272 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
| 273 | if (ret < 0) { |
| 274 | goto error; |
| 275 | } |
| 276 | |
| 277 | reply.session_id = be64toh(reply.session_id); |
| 278 | reply.ret_code = be32toh(reply.ret_code); |
| 279 | |
| 280 | /* Return session id or negative ret code. */ |
| 281 | if (reply.ret_code != LTTNG_OK) { |
| 282 | ret = -1; |
| 283 | ERR("Relayd create session replied error %d", reply.ret_code); |
| 284 | goto error; |
| 285 | } else { |
| 286 | ret = 0; |
| 287 | *relayd_session_id = reply.session_id; |
| 288 | } |
| 289 | |
| 290 | DBG("Relayd session created with id %" PRIu64, reply.session_id); |
| 291 | |
| 292 | error: |
| 293 | return ret; |
| 294 | } |
| 295 | |
| 296 | static int relayd_add_stream_2_1(struct lttcomm_relayd_sock *rsock, |
| 297 | const char *channel_name, const char *pathname) |
| 298 | { |
| 299 | int ret; |
| 300 | struct lttcomm_relayd_add_stream msg; |
| 301 | |
| 302 | memset(&msg, 0, sizeof(msg)); |
| 303 | if (lttng_strncpy(msg.channel_name, channel_name, |
| 304 | sizeof(msg.channel_name))) { |
| 305 | ret = -1; |
| 306 | goto error; |
| 307 | } |
| 308 | |
| 309 | if (lttng_strncpy(msg.pathname, pathname, |
| 310 | sizeof(msg.pathname))) { |
| 311 | ret = -1; |
| 312 | goto error; |
| 313 | } |
| 314 | |
| 315 | /* Send command */ |
| 316 | ret = send_command(rsock, RELAYD_ADD_STREAM, (void *) &msg, sizeof(msg), 0); |
| 317 | if (ret < 0) { |
| 318 | ret = -1; |
| 319 | goto error; |
| 320 | } |
| 321 | ret = 0; |
| 322 | error: |
| 323 | return ret; |
| 324 | } |
| 325 | |
| 326 | static int relayd_add_stream_2_2(struct lttcomm_relayd_sock *rsock, |
| 327 | const char *channel_name, const char *pathname, |
| 328 | uint64_t tracefile_size, uint64_t tracefile_count) |
| 329 | { |
| 330 | int ret; |
| 331 | struct lttcomm_relayd_add_stream_2_2 msg; |
| 332 | |
| 333 | memset(&msg, 0, sizeof(msg)); |
| 334 | /* Compat with relayd 2.2 to 2.10 */ |
| 335 | if (lttng_strncpy(msg.channel_name, channel_name, |
| 336 | sizeof(msg.channel_name))) { |
| 337 | ret = -1; |
| 338 | goto error; |
| 339 | } |
| 340 | if (lttng_strncpy(msg.pathname, pathname, |
| 341 | sizeof(msg.pathname))) { |
| 342 | ret = -1; |
| 343 | goto error; |
| 344 | } |
| 345 | msg.tracefile_size = htobe64(tracefile_size); |
| 346 | msg.tracefile_count = htobe64(tracefile_count); |
| 347 | |
| 348 | /* Send command */ |
| 349 | ret = send_command(rsock, RELAYD_ADD_STREAM, (void *) &msg, sizeof(msg), 0); |
| 350 | if (ret < 0) { |
| 351 | goto error; |
| 352 | } |
| 353 | ret = 0; |
| 354 | error: |
| 355 | return ret; |
| 356 | } |
| 357 | |
| 358 | static int relayd_add_stream_2_11(struct lttcomm_relayd_sock *rsock, |
| 359 | const char *channel_name, const char *pathname, |
| 360 | uint64_t tracefile_size, uint64_t tracefile_count, |
| 361 | uint64_t trace_archive_id) |
| 362 | { |
| 363 | int ret; |
| 364 | struct lttcomm_relayd_add_stream_2_11 *msg = NULL; |
| 365 | size_t channel_name_len; |
| 366 | size_t pathname_len; |
| 367 | size_t msg_length; |
| 368 | |
| 369 | /* The two names are sent with a '\0' delimiter between them. */ |
| 370 | channel_name_len = strlen(channel_name) + 1; |
| 371 | pathname_len = strlen(pathname) + 1; |
| 372 | |
| 373 | msg_length = sizeof(*msg) + channel_name_len + pathname_len; |
| 374 | msg = zmalloc(msg_length); |
| 375 | if (!msg) { |
| 376 | PERROR("zmalloc add_stream_2_11 command message"); |
| 377 | ret = -1; |
| 378 | goto error; |
| 379 | } |
| 380 | |
| 381 | assert(channel_name_len <= UINT32_MAX); |
| 382 | msg->channel_name_len = htobe32(channel_name_len); |
| 383 | |
| 384 | assert(pathname_len <= UINT32_MAX); |
| 385 | msg->pathname_len = htobe32(pathname_len); |
| 386 | |
| 387 | if (lttng_strncpy(msg->names, channel_name, channel_name_len)) { |
| 388 | ret = -1; |
| 389 | goto error; |
| 390 | } |
| 391 | if (lttng_strncpy(msg->names + channel_name_len, pathname, pathname_len)) { |
| 392 | ret = -1; |
| 393 | goto error; |
| 394 | } |
| 395 | |
| 396 | msg->tracefile_size = htobe64(tracefile_size); |
| 397 | msg->tracefile_count = htobe64(tracefile_count); |
| 398 | msg->trace_archive_id = htobe64(trace_archive_id); |
| 399 | |
| 400 | /* Send command */ |
| 401 | ret = send_command(rsock, RELAYD_ADD_STREAM, (void *) msg, msg_length, 0); |
| 402 | if (ret < 0) { |
| 403 | goto error; |
| 404 | } |
| 405 | ret = 0; |
| 406 | error: |
| 407 | free(msg); |
| 408 | return ret; |
| 409 | } |
| 410 | |
| 411 | /* |
| 412 | * Add stream on the relayd and assign stream handle to the stream_id argument. |
| 413 | * |
| 414 | * On success return 0 else return ret_code negative value. |
| 415 | */ |
| 416 | int relayd_add_stream(struct lttcomm_relayd_sock *rsock, const char *channel_name, |
| 417 | const char *pathname, uint64_t *stream_id, |
| 418 | uint64_t tracefile_size, uint64_t tracefile_count, |
| 419 | uint64_t trace_archive_id) |
| 420 | { |
| 421 | int ret; |
| 422 | struct lttcomm_relayd_status_stream reply; |
| 423 | |
| 424 | /* Code flow error. Safety net. */ |
| 425 | assert(rsock); |
| 426 | assert(channel_name); |
| 427 | assert(pathname); |
| 428 | |
| 429 | DBG("Relayd adding stream for channel name %s", channel_name); |
| 430 | |
| 431 | /* Compat with relayd 2.1 */ |
| 432 | if (rsock->minor == 1) { |
| 433 | /* For 2.1 */ |
| 434 | ret = relayd_add_stream_2_1(rsock, channel_name, pathname); |
| 435 | |
| 436 | } else if (rsock->minor > 1 && rsock->minor < 11) { |
| 437 | /* From 2.2 to 2.10 */ |
| 438 | ret = relayd_add_stream_2_2(rsock, channel_name, pathname, |
| 439 | tracefile_size, tracefile_count); |
| 440 | } else { |
| 441 | /* From 2.11 to ...*/ |
| 442 | ret = relayd_add_stream_2_11(rsock, channel_name, pathname, |
| 443 | tracefile_size, tracefile_count, |
| 444 | trace_archive_id); |
| 445 | } |
| 446 | |
| 447 | if (ret) { |
| 448 | ret = -1; |
| 449 | goto error; |
| 450 | } |
| 451 | |
| 452 | /* Waiting for reply */ |
| 453 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
| 454 | if (ret < 0) { |
| 455 | goto error; |
| 456 | } |
| 457 | |
| 458 | /* Back to host bytes order. */ |
| 459 | reply.handle = be64toh(reply.handle); |
| 460 | reply.ret_code = be32toh(reply.ret_code); |
| 461 | |
| 462 | /* Return session id or negative ret code. */ |
| 463 | if (reply.ret_code != LTTNG_OK) { |
| 464 | ret = -1; |
| 465 | ERR("Relayd add stream replied error %d", reply.ret_code); |
| 466 | } else { |
| 467 | /* Success */ |
| 468 | ret = 0; |
| 469 | *stream_id = reply.handle; |
| 470 | } |
| 471 | |
| 472 | DBG("Relayd stream added successfully with handle %" PRIu64, |
| 473 | reply.handle); |
| 474 | |
| 475 | error: |
| 476 | return ret; |
| 477 | } |
| 478 | |
| 479 | /* |
| 480 | * Inform the relay that all the streams for the current channel has been sent. |
| 481 | * |
| 482 | * On success return 0 else return ret_code negative value. |
| 483 | */ |
| 484 | int relayd_streams_sent(struct lttcomm_relayd_sock *rsock) |
| 485 | { |
| 486 | int ret; |
| 487 | struct lttcomm_relayd_generic_reply reply; |
| 488 | |
| 489 | /* Code flow error. Safety net. */ |
| 490 | assert(rsock); |
| 491 | |
| 492 | DBG("Relayd sending streams sent."); |
| 493 | |
| 494 | /* This feature was introduced in 2.4, ignore it for earlier versions. */ |
| 495 | if (rsock->minor < 4) { |
| 496 | ret = 0; |
| 497 | goto end; |
| 498 | } |
| 499 | |
| 500 | /* Send command */ |
| 501 | ret = send_command(rsock, RELAYD_STREAMS_SENT, NULL, 0, 0); |
| 502 | if (ret < 0) { |
| 503 | goto error; |
| 504 | } |
| 505 | |
| 506 | /* Waiting for reply */ |
| 507 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
| 508 | if (ret < 0) { |
| 509 | goto error; |
| 510 | } |
| 511 | |
| 512 | /* Back to host bytes order. */ |
| 513 | reply.ret_code = be32toh(reply.ret_code); |
| 514 | |
| 515 | /* Return session id or negative ret code. */ |
| 516 | if (reply.ret_code != LTTNG_OK) { |
| 517 | ret = -1; |
| 518 | ERR("Relayd streams sent replied error %d", reply.ret_code); |
| 519 | goto error; |
| 520 | } else { |
| 521 | /* Success */ |
| 522 | ret = 0; |
| 523 | } |
| 524 | |
| 525 | DBG("Relayd streams sent success"); |
| 526 | |
| 527 | error: |
| 528 | end: |
| 529 | return ret; |
| 530 | } |
| 531 | |
| 532 | /* |
| 533 | * Check version numbers on the relayd. |
| 534 | * If major versions are compatible, we assign minor_to_use to the |
| 535 | * minor version of the procotol we are going to use for this session. |
| 536 | * |
| 537 | * Return 0 if the two daemons are compatible, LTTNG_ERR_RELAYD_VERSION_FAIL |
| 538 | * otherwise, or a negative value on network errors. |
| 539 | */ |
| 540 | int relayd_version_check(struct lttcomm_relayd_sock *rsock) |
| 541 | { |
| 542 | int ret; |
| 543 | struct lttcomm_relayd_version msg; |
| 544 | |
| 545 | /* Code flow error. Safety net. */ |
| 546 | assert(rsock); |
| 547 | |
| 548 | DBG("Relayd version check for major.minor %u.%u", rsock->major, |
| 549 | rsock->minor); |
| 550 | |
| 551 | memset(&msg, 0, sizeof(msg)); |
| 552 | /* Prepare network byte order before transmission. */ |
| 553 | msg.major = htobe32(rsock->major); |
| 554 | msg.minor = htobe32(rsock->minor); |
| 555 | |
| 556 | /* Send command */ |
| 557 | ret = send_command(rsock, RELAYD_VERSION, (void *) &msg, sizeof(msg), 0); |
| 558 | if (ret < 0) { |
| 559 | goto error; |
| 560 | } |
| 561 | |
| 562 | /* Receive response */ |
| 563 | ret = recv_reply(rsock, (void *) &msg, sizeof(msg)); |
| 564 | if (ret < 0) { |
| 565 | goto error; |
| 566 | } |
| 567 | |
| 568 | /* Set back to host bytes order */ |
| 569 | msg.major = be32toh(msg.major); |
| 570 | msg.minor = be32toh(msg.minor); |
| 571 | |
| 572 | /* |
| 573 | * Only validate the major version. If the other side is higher, |
| 574 | * communication is not possible. Only major version equal can talk to each |
| 575 | * other. If the minor version differs, the lowest version is used by both |
| 576 | * sides. |
| 577 | */ |
| 578 | if (msg.major != rsock->major) { |
| 579 | /* Not compatible */ |
| 580 | ret = LTTNG_ERR_RELAYD_VERSION_FAIL; |
| 581 | DBG2("Relayd version is NOT compatible. Relayd version %u != %u (us)", |
| 582 | msg.major, rsock->major); |
| 583 | goto error; |
| 584 | } |
| 585 | |
| 586 | /* |
| 587 | * If the relayd's minor version is higher, it will adapt to our version so |
| 588 | * we can continue to use the latest relayd communication data structure. |
| 589 | * If the received minor version is higher, the relayd should adapt to us. |
| 590 | */ |
| 591 | if (rsock->minor > msg.minor) { |
| 592 | rsock->minor = msg.minor; |
| 593 | } |
| 594 | |
| 595 | /* Version number compatible */ |
| 596 | DBG2("Relayd version is compatible, using protocol version %u.%u", |
| 597 | rsock->major, rsock->minor); |
| 598 | ret = 0; |
| 599 | |
| 600 | error: |
| 601 | return ret; |
| 602 | } |
| 603 | |
| 604 | /* |
| 605 | * Add stream on the relayd and assign stream handle to the stream_id argument. |
| 606 | * |
| 607 | * On success return 0 else return ret_code negative value. |
| 608 | */ |
| 609 | int relayd_send_metadata(struct lttcomm_relayd_sock *rsock, size_t len) |
| 610 | { |
| 611 | int ret; |
| 612 | |
| 613 | /* Code flow error. Safety net. */ |
| 614 | assert(rsock); |
| 615 | |
| 616 | DBG("Relayd sending metadata of size %zu", len); |
| 617 | |
| 618 | /* Send command */ |
| 619 | ret = send_command(rsock, RELAYD_SEND_METADATA, NULL, len, 0); |
| 620 | if (ret < 0) { |
| 621 | goto error; |
| 622 | } |
| 623 | |
| 624 | DBG2("Relayd metadata added successfully"); |
| 625 | |
| 626 | /* |
| 627 | * After that call, the metadata data MUST be sent to the relayd so the |
| 628 | * receive size on the other end matches the len of the metadata packet |
| 629 | * header. This is why we don't wait for a reply here. |
| 630 | */ |
| 631 | |
| 632 | error: |
| 633 | return ret; |
| 634 | } |
| 635 | |
| 636 | /* |
| 637 | * Connect to relay daemon with an allocated lttcomm_relayd_sock. |
| 638 | */ |
| 639 | int relayd_connect(struct lttcomm_relayd_sock *rsock) |
| 640 | { |
| 641 | /* Code flow error. Safety net. */ |
| 642 | assert(rsock); |
| 643 | |
| 644 | if (!rsock->sock.ops) { |
| 645 | /* |
| 646 | * Attempting a connect on a non-initialized socket. |
| 647 | */ |
| 648 | return -ECONNRESET; |
| 649 | } |
| 650 | |
| 651 | DBG3("Relayd connect ..."); |
| 652 | |
| 653 | return rsock->sock.ops->connect(&rsock->sock); |
| 654 | } |
| 655 | |
| 656 | /* |
| 657 | * Close relayd socket with an allocated lttcomm_relayd_sock. |
| 658 | * |
| 659 | * If no socket operations are found, simply return 0 meaning that everything |
| 660 | * is fine. Without operations, the socket can not possibly be opened or used. |
| 661 | * This is possible if the socket was allocated but not created. However, the |
| 662 | * caller could simply use it to store a valid file descriptor for instance |
| 663 | * passed over a Unix socket and call this to cleanup but still without a valid |
| 664 | * ops pointer. |
| 665 | * |
| 666 | * Return the close returned value. On error, a negative value is usually |
| 667 | * returned back from close(2). |
| 668 | */ |
| 669 | int relayd_close(struct lttcomm_relayd_sock *rsock) |
| 670 | { |
| 671 | int ret; |
| 672 | |
| 673 | /* Code flow error. Safety net. */ |
| 674 | assert(rsock); |
| 675 | |
| 676 | /* An invalid fd is fine, return success. */ |
| 677 | if (rsock->sock.fd < 0) { |
| 678 | ret = 0; |
| 679 | goto end; |
| 680 | } |
| 681 | |
| 682 | DBG3("Relayd closing socket %d", rsock->sock.fd); |
| 683 | |
| 684 | if (rsock->sock.ops) { |
| 685 | ret = rsock->sock.ops->close(&rsock->sock); |
| 686 | } else { |
| 687 | /* Default call if no specific ops found. */ |
| 688 | ret = close(rsock->sock.fd); |
| 689 | if (ret < 0) { |
| 690 | PERROR("relayd_close default close"); |
| 691 | } |
| 692 | } |
| 693 | rsock->sock.fd = -1; |
| 694 | |
| 695 | end: |
| 696 | return ret; |
| 697 | } |
| 698 | |
| 699 | /* |
| 700 | * Send data header structure to the relayd. |
| 701 | */ |
| 702 | int relayd_send_data_hdr(struct lttcomm_relayd_sock *rsock, |
| 703 | struct lttcomm_relayd_data_hdr *hdr, size_t size) |
| 704 | { |
| 705 | int ret; |
| 706 | |
| 707 | /* Code flow error. Safety net. */ |
| 708 | assert(rsock); |
| 709 | assert(hdr); |
| 710 | |
| 711 | if (rsock->sock.fd < 0) { |
| 712 | return -ECONNRESET; |
| 713 | } |
| 714 | |
| 715 | DBG3("Relayd sending data header of size %zu", size); |
| 716 | |
| 717 | /* Again, safety net */ |
| 718 | if (size == 0) { |
| 719 | size = sizeof(struct lttcomm_relayd_data_hdr); |
| 720 | } |
| 721 | |
| 722 | /* Only send data header. */ |
| 723 | ret = rsock->sock.ops->sendmsg(&rsock->sock, hdr, size, 0); |
| 724 | if (ret < 0) { |
| 725 | ret = -errno; |
| 726 | goto error; |
| 727 | } |
| 728 | |
| 729 | /* |
| 730 | * The data MUST be sent right after that command for the receive on the |
| 731 | * other end to match the size in the header. |
| 732 | */ |
| 733 | |
| 734 | error: |
| 735 | return ret; |
| 736 | } |
| 737 | |
| 738 | /* |
| 739 | * Send close stream command to the relayd. |
| 740 | */ |
| 741 | int relayd_send_close_stream(struct lttcomm_relayd_sock *rsock, uint64_t stream_id, |
| 742 | uint64_t last_net_seq_num) |
| 743 | { |
| 744 | int ret; |
| 745 | struct lttcomm_relayd_close_stream msg; |
| 746 | struct lttcomm_relayd_generic_reply reply; |
| 747 | |
| 748 | /* Code flow error. Safety net. */ |
| 749 | assert(rsock); |
| 750 | |
| 751 | DBG("Relayd closing stream id %" PRIu64, stream_id); |
| 752 | |
| 753 | memset(&msg, 0, sizeof(msg)); |
| 754 | msg.stream_id = htobe64(stream_id); |
| 755 | msg.last_net_seq_num = htobe64(last_net_seq_num); |
| 756 | |
| 757 | /* Send command */ |
| 758 | ret = send_command(rsock, RELAYD_CLOSE_STREAM, (void *) &msg, sizeof(msg), 0); |
| 759 | if (ret < 0) { |
| 760 | goto error; |
| 761 | } |
| 762 | |
| 763 | /* Receive response */ |
| 764 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
| 765 | if (ret < 0) { |
| 766 | goto error; |
| 767 | } |
| 768 | |
| 769 | reply.ret_code = be32toh(reply.ret_code); |
| 770 | |
| 771 | /* Return session id or negative ret code. */ |
| 772 | if (reply.ret_code != LTTNG_OK) { |
| 773 | ret = -1; |
| 774 | ERR("Relayd close stream replied error %d", reply.ret_code); |
| 775 | } else { |
| 776 | /* Success */ |
| 777 | ret = 0; |
| 778 | } |
| 779 | |
| 780 | DBG("Relayd close stream id %" PRIu64 " successfully", stream_id); |
| 781 | |
| 782 | error: |
| 783 | return ret; |
| 784 | } |
| 785 | |
| 786 | /* |
| 787 | * Check for data availability for a given stream id. |
| 788 | * |
| 789 | * Return 0 if NOT pending, 1 if so and a negative value on error. |
| 790 | */ |
| 791 | int relayd_data_pending(struct lttcomm_relayd_sock *rsock, uint64_t stream_id, |
| 792 | uint64_t last_net_seq_num) |
| 793 | { |
| 794 | int ret; |
| 795 | struct lttcomm_relayd_data_pending msg; |
| 796 | struct lttcomm_relayd_generic_reply reply; |
| 797 | |
| 798 | /* Code flow error. Safety net. */ |
| 799 | assert(rsock); |
| 800 | |
| 801 | DBG("Relayd data pending for stream id %" PRIu64, stream_id); |
| 802 | |
| 803 | memset(&msg, 0, sizeof(msg)); |
| 804 | msg.stream_id = htobe64(stream_id); |
| 805 | msg.last_net_seq_num = htobe64(last_net_seq_num); |
| 806 | |
| 807 | /* Send command */ |
| 808 | ret = send_command(rsock, RELAYD_DATA_PENDING, (void *) &msg, |
| 809 | sizeof(msg), 0); |
| 810 | if (ret < 0) { |
| 811 | goto error; |
| 812 | } |
| 813 | |
| 814 | /* Receive response */ |
| 815 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
| 816 | if (ret < 0) { |
| 817 | goto error; |
| 818 | } |
| 819 | |
| 820 | reply.ret_code = be32toh(reply.ret_code); |
| 821 | |
| 822 | /* Return session id or negative ret code. */ |
| 823 | if (reply.ret_code >= LTTNG_OK) { |
| 824 | ERR("Relayd data pending replied error %d", reply.ret_code); |
| 825 | } |
| 826 | |
| 827 | /* At this point, the ret code is either 1 or 0 */ |
| 828 | ret = reply.ret_code; |
| 829 | |
| 830 | DBG("Relayd data is %s pending for stream id %" PRIu64, |
| 831 | ret == 1 ? "" : "NOT", stream_id); |
| 832 | |
| 833 | error: |
| 834 | return ret; |
| 835 | } |
| 836 | |
| 837 | /* |
| 838 | * Check on the relayd side for a quiescent state on the control socket. |
| 839 | */ |
| 840 | int relayd_quiescent_control(struct lttcomm_relayd_sock *rsock, |
| 841 | uint64_t metadata_stream_id) |
| 842 | { |
| 843 | int ret; |
| 844 | struct lttcomm_relayd_quiescent_control msg; |
| 845 | struct lttcomm_relayd_generic_reply reply; |
| 846 | |
| 847 | /* Code flow error. Safety net. */ |
| 848 | assert(rsock); |
| 849 | |
| 850 | DBG("Relayd checking quiescent control state"); |
| 851 | |
| 852 | memset(&msg, 0, sizeof(msg)); |
| 853 | msg.stream_id = htobe64(metadata_stream_id); |
| 854 | |
| 855 | /* Send command */ |
| 856 | ret = send_command(rsock, RELAYD_QUIESCENT_CONTROL, &msg, sizeof(msg), 0); |
| 857 | if (ret < 0) { |
| 858 | goto error; |
| 859 | } |
| 860 | |
| 861 | /* Receive response */ |
| 862 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
| 863 | if (ret < 0) { |
| 864 | goto error; |
| 865 | } |
| 866 | |
| 867 | reply.ret_code = be32toh(reply.ret_code); |
| 868 | |
| 869 | /* Return session id or negative ret code. */ |
| 870 | if (reply.ret_code != LTTNG_OK) { |
| 871 | ret = -1; |
| 872 | ERR("Relayd quiescent control replied error %d", reply.ret_code); |
| 873 | goto error; |
| 874 | } |
| 875 | |
| 876 | /* Control socket is quiescent */ |
| 877 | return 0; |
| 878 | |
| 879 | error: |
| 880 | return ret; |
| 881 | } |
| 882 | |
| 883 | /* |
| 884 | * Begin a data pending command for a specific session id. |
| 885 | */ |
| 886 | int relayd_begin_data_pending(struct lttcomm_relayd_sock *rsock, uint64_t id) |
| 887 | { |
| 888 | int ret; |
| 889 | struct lttcomm_relayd_begin_data_pending msg; |
| 890 | struct lttcomm_relayd_generic_reply reply; |
| 891 | |
| 892 | /* Code flow error. Safety net. */ |
| 893 | assert(rsock); |
| 894 | |
| 895 | DBG("Relayd begin data pending"); |
| 896 | |
| 897 | memset(&msg, 0, sizeof(msg)); |
| 898 | msg.session_id = htobe64(id); |
| 899 | |
| 900 | /* Send command */ |
| 901 | ret = send_command(rsock, RELAYD_BEGIN_DATA_PENDING, &msg, sizeof(msg), 0); |
| 902 | if (ret < 0) { |
| 903 | goto error; |
| 904 | } |
| 905 | |
| 906 | /* Receive response */ |
| 907 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
| 908 | if (ret < 0) { |
| 909 | goto error; |
| 910 | } |
| 911 | |
| 912 | reply.ret_code = be32toh(reply.ret_code); |
| 913 | |
| 914 | /* Return session id or negative ret code. */ |
| 915 | if (reply.ret_code != LTTNG_OK) { |
| 916 | ret = -1; |
| 917 | ERR("Relayd begin data pending replied error %d", reply.ret_code); |
| 918 | goto error; |
| 919 | } |
| 920 | |
| 921 | return 0; |
| 922 | |
| 923 | error: |
| 924 | return ret; |
| 925 | } |
| 926 | |
| 927 | /* |
| 928 | * End a data pending command for a specific session id. |
| 929 | * |
| 930 | * Return 0 on success and set is_data_inflight to 0 if no data is being |
| 931 | * streamed or 1 if it is the case. |
| 932 | */ |
| 933 | int relayd_end_data_pending(struct lttcomm_relayd_sock *rsock, uint64_t id, |
| 934 | unsigned int *is_data_inflight) |
| 935 | { |
| 936 | int ret, recv_ret; |
| 937 | struct lttcomm_relayd_end_data_pending msg; |
| 938 | struct lttcomm_relayd_generic_reply reply; |
| 939 | |
| 940 | /* Code flow error. Safety net. */ |
| 941 | assert(rsock); |
| 942 | |
| 943 | DBG("Relayd end data pending"); |
| 944 | |
| 945 | memset(&msg, 0, sizeof(msg)); |
| 946 | msg.session_id = htobe64(id); |
| 947 | |
| 948 | /* Send command */ |
| 949 | ret = send_command(rsock, RELAYD_END_DATA_PENDING, &msg, sizeof(msg), 0); |
| 950 | if (ret < 0) { |
| 951 | goto error; |
| 952 | } |
| 953 | |
| 954 | /* Receive response */ |
| 955 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
| 956 | if (ret < 0) { |
| 957 | goto error; |
| 958 | } |
| 959 | |
| 960 | recv_ret = be32toh(reply.ret_code); |
| 961 | if (recv_ret < 0) { |
| 962 | ret = recv_ret; |
| 963 | goto error; |
| 964 | } |
| 965 | |
| 966 | *is_data_inflight = recv_ret; |
| 967 | |
| 968 | DBG("Relayd end data pending is data inflight: %d", recv_ret); |
| 969 | |
| 970 | return 0; |
| 971 | |
| 972 | error: |
| 973 | return ret; |
| 974 | } |
| 975 | |
| 976 | /* |
| 977 | * Send index to the relayd. |
| 978 | */ |
| 979 | int relayd_send_index(struct lttcomm_relayd_sock *rsock, |
| 980 | struct ctf_packet_index *index, uint64_t relay_stream_id, |
| 981 | uint64_t net_seq_num) |
| 982 | { |
| 983 | int ret; |
| 984 | struct lttcomm_relayd_index msg; |
| 985 | struct lttcomm_relayd_generic_reply reply; |
| 986 | |
| 987 | /* Code flow error. Safety net. */ |
| 988 | assert(rsock); |
| 989 | |
| 990 | if (rsock->minor < 4) { |
| 991 | DBG("Not sending indexes before protocol 2.4"); |
| 992 | ret = 0; |
| 993 | goto error; |
| 994 | } |
| 995 | |
| 996 | DBG("Relayd sending index for stream ID %" PRIu64, relay_stream_id); |
| 997 | |
| 998 | memset(&msg, 0, sizeof(msg)); |
| 999 | msg.relay_stream_id = htobe64(relay_stream_id); |
| 1000 | msg.net_seq_num = htobe64(net_seq_num); |
| 1001 | |
| 1002 | /* The index is already in big endian. */ |
| 1003 | msg.packet_size = index->packet_size; |
| 1004 | msg.content_size = index->content_size; |
| 1005 | msg.timestamp_begin = index->timestamp_begin; |
| 1006 | msg.timestamp_end = index->timestamp_end; |
| 1007 | msg.events_discarded = index->events_discarded; |
| 1008 | msg.stream_id = index->stream_id; |
| 1009 | |
| 1010 | if (rsock->minor >= 8) { |
| 1011 | msg.stream_instance_id = index->stream_instance_id; |
| 1012 | msg.packet_seq_num = index->packet_seq_num; |
| 1013 | } |
| 1014 | |
| 1015 | /* Send command */ |
| 1016 | ret = send_command(rsock, RELAYD_SEND_INDEX, &msg, |
| 1017 | lttcomm_relayd_index_len(lttng_to_index_major(rsock->major, |
| 1018 | rsock->minor), |
| 1019 | lttng_to_index_minor(rsock->major, rsock->minor)), |
| 1020 | 0); |
| 1021 | if (ret < 0) { |
| 1022 | goto error; |
| 1023 | } |
| 1024 | |
| 1025 | /* Receive response */ |
| 1026 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
| 1027 | if (ret < 0) { |
| 1028 | goto error; |
| 1029 | } |
| 1030 | |
| 1031 | reply.ret_code = be32toh(reply.ret_code); |
| 1032 | |
| 1033 | /* Return session id or negative ret code. */ |
| 1034 | if (reply.ret_code != LTTNG_OK) { |
| 1035 | ret = -1; |
| 1036 | ERR("Relayd send index replied error %d", reply.ret_code); |
| 1037 | } else { |
| 1038 | /* Success */ |
| 1039 | ret = 0; |
| 1040 | } |
| 1041 | |
| 1042 | error: |
| 1043 | return ret; |
| 1044 | } |
| 1045 | |
| 1046 | /* |
| 1047 | * Ask the relay to reset the metadata trace file (regeneration). |
| 1048 | */ |
| 1049 | int relayd_reset_metadata(struct lttcomm_relayd_sock *rsock, |
| 1050 | uint64_t stream_id, uint64_t version) |
| 1051 | { |
| 1052 | int ret; |
| 1053 | struct lttcomm_relayd_reset_metadata msg; |
| 1054 | struct lttcomm_relayd_generic_reply reply; |
| 1055 | |
| 1056 | /* Code flow error. Safety net. */ |
| 1057 | assert(rsock); |
| 1058 | |
| 1059 | /* Should have been prevented by the sessiond. */ |
| 1060 | if (rsock->minor < 8) { |
| 1061 | ERR("Metadata regeneration unsupported before 2.8"); |
| 1062 | ret = -1; |
| 1063 | goto error; |
| 1064 | } |
| 1065 | |
| 1066 | DBG("Relayd reset metadata stream id %" PRIu64, stream_id); |
| 1067 | |
| 1068 | memset(&msg, 0, sizeof(msg)); |
| 1069 | msg.stream_id = htobe64(stream_id); |
| 1070 | msg.version = htobe64(version); |
| 1071 | |
| 1072 | /* Send command */ |
| 1073 | ret = send_command(rsock, RELAYD_RESET_METADATA, (void *) &msg, sizeof(msg), 0); |
| 1074 | if (ret < 0) { |
| 1075 | goto error; |
| 1076 | } |
| 1077 | |
| 1078 | /* Receive response */ |
| 1079 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
| 1080 | if (ret < 0) { |
| 1081 | goto error; |
| 1082 | } |
| 1083 | |
| 1084 | reply.ret_code = be32toh(reply.ret_code); |
| 1085 | |
| 1086 | /* Return session id or negative ret code. */ |
| 1087 | if (reply.ret_code != LTTNG_OK) { |
| 1088 | ret = -1; |
| 1089 | ERR("Relayd reset metadata replied error %d", reply.ret_code); |
| 1090 | } else { |
| 1091 | /* Success */ |
| 1092 | ret = 0; |
| 1093 | } |
| 1094 | |
| 1095 | DBG("Relayd reset metadata stream id %" PRIu64 " successfully", stream_id); |
| 1096 | |
| 1097 | error: |
| 1098 | return ret; |
| 1099 | } |
| 1100 | |
| 1101 | int relayd_rotate_stream(struct lttcomm_relayd_sock *rsock, uint64_t stream_id, |
| 1102 | const char *new_pathname, uint64_t new_chunk_id, |
| 1103 | uint64_t seq_num) |
| 1104 | { |
| 1105 | int ret; |
| 1106 | struct lttcomm_relayd_rotate_stream *msg = NULL; |
| 1107 | struct lttcomm_relayd_generic_reply reply; |
| 1108 | size_t len; |
| 1109 | int msg_len; |
| 1110 | |
| 1111 | /* Code flow error. Safety net. */ |
| 1112 | assert(rsock); |
| 1113 | |
| 1114 | DBG("Sending rotate stream id %" PRIu64 " command to relayd", stream_id); |
| 1115 | |
| 1116 | /* Account for the trailing NULL. */ |
| 1117 | len = lttng_strnlen(new_pathname, LTTNG_PATH_MAX) + 1; |
| 1118 | if (len > LTTNG_PATH_MAX) { |
| 1119 | ERR("Path used in relayd rotate stream command exceeds the maximal allowed length"); |
| 1120 | ret = -1; |
| 1121 | goto error; |
| 1122 | } |
| 1123 | |
| 1124 | msg_len = offsetof(struct lttcomm_relayd_rotate_stream, new_pathname) + len; |
| 1125 | msg = zmalloc(msg_len); |
| 1126 | if (!msg) { |
| 1127 | PERROR("Failed to allocate relayd rotate stream command of %d bytes", |
| 1128 | msg_len); |
| 1129 | ret = -1; |
| 1130 | goto error; |
| 1131 | } |
| 1132 | |
| 1133 | if (lttng_strncpy(msg->new_pathname, new_pathname, len)) { |
| 1134 | ret = -1; |
| 1135 | ERR("Failed to copy relayd rotate stream command's new path name"); |
| 1136 | goto error; |
| 1137 | } |
| 1138 | |
| 1139 | msg->pathname_length = htobe32(len); |
| 1140 | msg->stream_id = htobe64(stream_id); |
| 1141 | msg->new_chunk_id = htobe64(new_chunk_id); |
| 1142 | /* |
| 1143 | * The seq_num is invalid for metadata streams, but it is ignored on |
| 1144 | * the relay. |
| 1145 | */ |
| 1146 | msg->rotate_at_seq_num = htobe64(seq_num); |
| 1147 | |
| 1148 | /* Send command. */ |
| 1149 | ret = send_command(rsock, RELAYD_ROTATE_STREAM, (void *) msg, msg_len, 0); |
| 1150 | if (ret < 0) { |
| 1151 | ERR("Send rotate command"); |
| 1152 | goto error; |
| 1153 | } |
| 1154 | |
| 1155 | /* Receive response. */ |
| 1156 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
| 1157 | if (ret < 0) { |
| 1158 | ERR("Receive rotate reply"); |
| 1159 | goto error; |
| 1160 | } |
| 1161 | |
| 1162 | reply.ret_code = be32toh(reply.ret_code); |
| 1163 | |
| 1164 | /* Return session id or negative ret code. */ |
| 1165 | if (reply.ret_code != LTTNG_OK) { |
| 1166 | ret = -1; |
| 1167 | ERR("Relayd rotate stream replied error %d", reply.ret_code); |
| 1168 | } else { |
| 1169 | /* Success. */ |
| 1170 | ret = 0; |
| 1171 | DBG("Relayd rotated stream id %" PRIu64 " successfully", stream_id); |
| 1172 | } |
| 1173 | |
| 1174 | error: |
| 1175 | free(msg); |
| 1176 | return ret; |
| 1177 | } |
| 1178 | |
| 1179 | int relayd_rotate_rename(struct lttcomm_relayd_sock *rsock, |
| 1180 | const char *old_path, const char *new_path) |
| 1181 | { |
| 1182 | int ret; |
| 1183 | struct lttcomm_relayd_rotate_rename *msg = NULL; |
| 1184 | struct lttcomm_relayd_generic_reply reply; |
| 1185 | size_t old_path_length, new_path_length; |
| 1186 | size_t msg_length; |
| 1187 | |
| 1188 | /* Code flow error. Safety net. */ |
| 1189 | assert(rsock); |
| 1190 | |
| 1191 | DBG("Relayd rename chunk %s to %s", old_path, new_path); |
| 1192 | |
| 1193 | /* The two paths are sent with a '\0' delimiter between them. */ |
| 1194 | old_path_length = strlen(old_path) + 1; |
| 1195 | new_path_length = strlen(new_path) + 1; |
| 1196 | |
| 1197 | msg_length = sizeof(*msg) + old_path_length + new_path_length; |
| 1198 | msg = zmalloc(msg_length); |
| 1199 | if (!msg) { |
| 1200 | PERROR("zmalloc rotate-rename command message"); |
| 1201 | ret = -1; |
| 1202 | goto error; |
| 1203 | } |
| 1204 | |
| 1205 | assert(old_path_length <= UINT32_MAX); |
| 1206 | msg->old_path_length = htobe32(old_path_length); |
| 1207 | |
| 1208 | assert(new_path_length <= UINT32_MAX); |
| 1209 | msg->new_path_length = htobe32(new_path_length); |
| 1210 | |
| 1211 | strcpy(msg->paths, old_path); |
| 1212 | strcpy(msg->paths + old_path_length, new_path); |
| 1213 | |
| 1214 | /* Send command */ |
| 1215 | ret = send_command(rsock, RELAYD_ROTATE_RENAME, (const void *) msg, |
| 1216 | msg_length, 0); |
| 1217 | if (ret < 0) { |
| 1218 | goto error; |
| 1219 | } |
| 1220 | |
| 1221 | /* Receive response */ |
| 1222 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
| 1223 | if (ret < 0) { |
| 1224 | goto error; |
| 1225 | } |
| 1226 | |
| 1227 | reply.ret_code = be32toh(reply.ret_code); |
| 1228 | |
| 1229 | /* Return session id or negative ret code. */ |
| 1230 | if (reply.ret_code != LTTNG_OK) { |
| 1231 | ret = -1; |
| 1232 | ERR("Relayd rotate rename replied error %d", reply.ret_code); |
| 1233 | } else { |
| 1234 | /* Success */ |
| 1235 | ret = 0; |
| 1236 | } |
| 1237 | |
| 1238 | DBG("Relayd rotate rename completed successfully"); |
| 1239 | |
| 1240 | error: |
| 1241 | free(msg); |
| 1242 | return ret; |
| 1243 | } |
| 1244 | |
| 1245 | int relayd_rotate_pending(struct lttcomm_relayd_sock *rsock, uint64_t chunk_id) |
| 1246 | { |
| 1247 | int ret; |
| 1248 | struct lttcomm_relayd_rotate_pending msg; |
| 1249 | struct lttcomm_relayd_rotate_pending_reply reply; |
| 1250 | |
| 1251 | /* Code flow error. Safety net. */ |
| 1252 | assert(rsock); |
| 1253 | |
| 1254 | DBG("Querying relayd for rotate pending with chunk_id %" PRIu64, |
| 1255 | chunk_id); |
| 1256 | |
| 1257 | memset(&msg, 0, sizeof(msg)); |
| 1258 | msg.chunk_id = htobe64(chunk_id); |
| 1259 | |
| 1260 | /* Send command */ |
| 1261 | ret = send_command(rsock, RELAYD_ROTATE_PENDING, (void *) &msg, |
| 1262 | sizeof(msg), 0); |
| 1263 | if (ret < 0) { |
| 1264 | goto error; |
| 1265 | } |
| 1266 | |
| 1267 | /* Receive response */ |
| 1268 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
| 1269 | if (ret < 0) { |
| 1270 | goto error; |
| 1271 | } |
| 1272 | |
| 1273 | reply.generic.ret_code = be32toh(reply.generic.ret_code); |
| 1274 | |
| 1275 | /* Return session id or negative ret code. */ |
| 1276 | if (reply.generic.ret_code != LTTNG_OK) { |
| 1277 | ret = -reply.generic.ret_code; |
| 1278 | ERR("Relayd rotate pending replied with error %d", ret); |
| 1279 | goto error; |
| 1280 | } else { |
| 1281 | /* No error, just rotate pending state */ |
| 1282 | if (reply.is_pending == 0 || reply.is_pending == 1) { |
| 1283 | ret = reply.is_pending; |
| 1284 | DBG("Relayd rotate pending command completed successfully with result \"%s\"", |
| 1285 | ret ? "rotation pending" : "rotation NOT pending"); |
| 1286 | } else { |
| 1287 | ret = -LTTNG_ERR_UNK; |
| 1288 | } |
| 1289 | } |
| 1290 | |
| 1291 | error: |
| 1292 | return ret; |
| 1293 | } |
| 1294 | |
| 1295 | int relayd_mkdir(struct lttcomm_relayd_sock *rsock, const char *path) |
| 1296 | { |
| 1297 | int ret; |
| 1298 | struct lttcomm_relayd_mkdir *msg; |
| 1299 | struct lttcomm_relayd_generic_reply reply; |
| 1300 | size_t len; |
| 1301 | |
| 1302 | /* Code flow error. Safety net. */ |
| 1303 | assert(rsock); |
| 1304 | |
| 1305 | DBG("Relayd mkdir path %s", path); |
| 1306 | |
| 1307 | len = strlen(path) + 1; |
| 1308 | msg = zmalloc(sizeof(msg->length) + len); |
| 1309 | if (!msg) { |
| 1310 | PERROR("Alloc mkdir msg"); |
| 1311 | ret = -1; |
| 1312 | goto error; |
| 1313 | } |
| 1314 | msg->length = htobe32((uint32_t) len); |
| 1315 | |
| 1316 | if (lttng_strncpy(msg->path, path, len)) { |
| 1317 | ret = -1; |
| 1318 | goto error; |
| 1319 | } |
| 1320 | |
| 1321 | /* Send command */ |
| 1322 | ret = send_command(rsock, RELAYD_MKDIR, (void *) msg, |
| 1323 | sizeof(msg->length) + len, 0); |
| 1324 | if (ret < 0) { |
| 1325 | goto error; |
| 1326 | } |
| 1327 | |
| 1328 | /* Receive response */ |
| 1329 | ret = recv_reply(rsock, (void *) &reply, sizeof(reply)); |
| 1330 | if (ret < 0) { |
| 1331 | goto error; |
| 1332 | } |
| 1333 | |
| 1334 | reply.ret_code = be32toh(reply.ret_code); |
| 1335 | |
| 1336 | /* Return session id or negative ret code. */ |
| 1337 | if (reply.ret_code != LTTNG_OK) { |
| 1338 | ret = -1; |
| 1339 | ERR("Relayd mkdir replied error %d", reply.ret_code); |
| 1340 | } else { |
| 1341 | /* Success */ |
| 1342 | ret = 0; |
| 1343 | } |
| 1344 | |
| 1345 | DBG("Relayd mkdir completed successfully"); |
| 1346 | |
| 1347 | error: |
| 1348 | free(msg); |
| 1349 | return ret; |
| 1350 | } |