| 1 | /* |
| 2 | * Copyright (C) 2013 - Julien Desfossez <jdesfossez@efficios.com> |
| 3 | * Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
| 4 | * |
| 5 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 6 | * of this software and associated documentation files (the "Software"), to deal |
| 7 | * in the Software without restriction, including without limitation the rights |
| 8 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 9 | * copies of the Software, and to permit persons to whom the Software is |
| 10 | * furnished to do so, subject to the following conditions: |
| 11 | * |
| 12 | * The above copyright notice and this permission notice shall be included in |
| 13 | * all copies or substantial portions of the Software. |
| 14 | * |
| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 18 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 20 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 21 | * SOFTWARE. |
| 22 | */ |
| 23 | |
| 24 | #include <sys/socket.h> |
| 25 | #include <sys/types.h> |
| 26 | #include <netinet/in.h> |
| 27 | #include <netdb.h> |
| 28 | #include <stdio.h> |
| 29 | #include <string.h> |
| 30 | #include <stdlib.h> |
| 31 | #include <unistd.h> |
| 32 | #include <errno.h> |
| 33 | #include <inttypes.h> |
| 34 | #include <fcntl.h> |
| 35 | #include <sys/mman.h> |
| 36 | |
| 37 | #include "lttng-viewer.h" |
| 38 | #include "ctf-index.h" |
| 39 | #include "network-live.h" |
| 40 | |
| 41 | #include <babeltrace/babeltrace.h> |
| 42 | #include <babeltrace/ctf/events.h> |
| 43 | #include <babeltrace/ctf/callbacks.h> |
| 44 | #include <babeltrace/ctf/iterator.h> |
| 45 | |
| 46 | /* for packet_index */ |
| 47 | #include <babeltrace/ctf/types.h> |
| 48 | |
| 49 | #include <babeltrace/ctf/metadata.h> |
| 50 | #include <babeltrace/ctf-text/types.h> |
| 51 | #include <babeltrace/ctf/events-internal.h> |
| 52 | |
| 53 | /* |
| 54 | * Memory allocation zeroed |
| 55 | */ |
| 56 | #define zmalloc(x) calloc(1, x) |
| 57 | /* FIXME : completely arbitrary */ |
| 58 | #define mmap_size 524288 |
| 59 | |
| 60 | static int control_sock; |
| 61 | struct live_session *session; |
| 62 | |
| 63 | struct viewer_stream { |
| 64 | uint64_t id; |
| 65 | uint64_t ctf_trace_id; |
| 66 | void *mmap_base; |
| 67 | int fd; |
| 68 | int metadata_flag; |
| 69 | int first_read; |
| 70 | char path[PATH_MAX]; |
| 71 | }; |
| 72 | |
| 73 | struct live_session { |
| 74 | struct viewer_stream *streams; |
| 75 | uint64_t live_timer_interval; |
| 76 | uint64_t stream_count; |
| 77 | }; |
| 78 | |
| 79 | static |
| 80 | int connect_viewer(char *hostname) |
| 81 | { |
| 82 | struct hostent *host; |
| 83 | struct sockaddr_in server_addr; |
| 84 | int ret; |
| 85 | |
| 86 | host = gethostbyname(hostname); |
| 87 | if (!host) { |
| 88 | ret = -1; |
| 89 | goto end; |
| 90 | } |
| 91 | |
| 92 | if ((control_sock = socket(AF_INET, SOCK_STREAM, 0)) == -1) { |
| 93 | perror("Socket"); |
| 94 | ret = -1; |
| 95 | goto end; |
| 96 | } |
| 97 | |
| 98 | server_addr.sin_family = AF_INET; |
| 99 | server_addr.sin_port = htons(5344); |
| 100 | server_addr.sin_addr = *((struct in_addr *) host->h_addr); |
| 101 | bzero(&(server_addr.sin_zero), 8); |
| 102 | |
| 103 | if (connect(control_sock, (struct sockaddr *) &server_addr, |
| 104 | sizeof(struct sockaddr)) == -1) { |
| 105 | perror("Connect"); |
| 106 | ret = -1; |
| 107 | goto end; |
| 108 | } |
| 109 | |
| 110 | server_addr.sin_family = AF_INET; |
| 111 | server_addr.sin_port = htons(5345); |
| 112 | server_addr.sin_addr = *((struct in_addr *) host->h_addr); |
| 113 | bzero(&(server_addr.sin_zero), 8); |
| 114 | |
| 115 | ret = 0; |
| 116 | |
| 117 | end: |
| 118 | return ret; |
| 119 | } |
| 120 | |
| 121 | static |
| 122 | int establish_connection(void) |
| 123 | { |
| 124 | struct lttng_viewer_cmd cmd; |
| 125 | struct lttng_viewer_connect connect; |
| 126 | int ret; |
| 127 | |
| 128 | cmd.cmd = htobe32(VIEWER_CONNECT); |
| 129 | cmd.data_size = sizeof(connect); |
| 130 | cmd.cmd_version = 0; |
| 131 | |
| 132 | connect.major = htobe32(2); |
| 133 | connect.minor = htobe32(4); |
| 134 | connect.type = htobe32(VIEWER_CLIENT_COMMAND); |
| 135 | |
| 136 | do { |
| 137 | ret = send(control_sock, &cmd, sizeof(cmd), 0); |
| 138 | } while (ret < 0 && errno == EINTR); |
| 139 | if (ret < 0) { |
| 140 | fprintf(stderr, "Error sending cmd\n"); |
| 141 | goto error; |
| 142 | } |
| 143 | do { |
| 144 | ret = send(control_sock, &connect, sizeof(connect), 0); |
| 145 | } while (ret < 0 && errno == EINTR); |
| 146 | if (ret < 0) { |
| 147 | fprintf(stderr, "Error sending version\n"); |
| 148 | goto error; |
| 149 | } |
| 150 | |
| 151 | do { |
| 152 | ret = recv(control_sock, &connect, sizeof(connect), 0); |
| 153 | } while (ret < 0 && errno == EINTR); |
| 154 | if (ret < 0) { |
| 155 | fprintf(stderr, "Error receiving version\n"); |
| 156 | goto error; |
| 157 | } |
| 158 | fprintf(stderr, " - Received viewer session ID : %" PRIu64 "\n", |
| 159 | be64toh(connect.viewer_session_id)); |
| 160 | fprintf(stderr, " - Received version : %u.%u\n", be32toh(connect.major), |
| 161 | be32toh(connect.minor)); |
| 162 | |
| 163 | ret = 0; |
| 164 | |
| 165 | error: |
| 166 | return ret; |
| 167 | } |
| 168 | |
| 169 | int list_sessions(void) |
| 170 | { |
| 171 | struct lttng_viewer_cmd cmd; |
| 172 | struct lttng_viewer_list_sessions list; |
| 173 | struct lttng_viewer_session lsession; |
| 174 | int i, ret; |
| 175 | int first_session = 0; |
| 176 | |
| 177 | cmd.cmd = htobe32(VIEWER_LIST_SESSIONS); |
| 178 | cmd.data_size = 0; |
| 179 | cmd.cmd_version = 0; |
| 180 | |
| 181 | do { |
| 182 | ret = send(control_sock, &cmd, sizeof(cmd), 0); |
| 183 | } while (ret < 0 && errno == EINTR); |
| 184 | if (ret < 0) { |
| 185 | fprintf(stderr, "Error sending cmd\n"); |
| 186 | goto error; |
| 187 | } |
| 188 | |
| 189 | do { |
| 190 | ret = recv(control_sock, &list, sizeof(list), 0); |
| 191 | } while (ret < 0 && errno == EINTR); |
| 192 | if (ret < 0) { |
| 193 | fprintf(stderr, "Error receiving session list\n"); |
| 194 | goto error; |
| 195 | } |
| 196 | |
| 197 | fprintf(stderr, " - %u active session(s)\n", be32toh(list.sessions_count)); |
| 198 | for (i = 0; i < be32toh(list.sessions_count); i++) { |
| 199 | do { |
| 200 | ret = recv(control_sock, &lsession, sizeof(lsession), 0); |
| 201 | } while (ret < 0 && errno == EINTR); |
| 202 | if (ret < 0) { |
| 203 | fprintf(stderr, "Error receiving session\n"); |
| 204 | goto error; |
| 205 | } |
| 206 | fprintf(stderr, " - %" PRIu64 " : %s on host %s (timer = %u, " |
| 207 | "%u client(s) connected)\n", |
| 208 | be64toh(lsession.id), lsession.session_name, |
| 209 | lsession.hostname, be32toh(lsession.live_timer), |
| 210 | be32toh(lsession.clients)); |
| 211 | if (first_session <= 0) { |
| 212 | first_session = be64toh(lsession.id); |
| 213 | } |
| 214 | } |
| 215 | |
| 216 | /* I know, type mismatch */ |
| 217 | ret = (int) first_session; |
| 218 | |
| 219 | error: |
| 220 | return ret; |
| 221 | } |
| 222 | |
| 223 | static |
| 224 | int attach_session(int id, int begin) |
| 225 | { |
| 226 | struct lttng_viewer_cmd cmd; |
| 227 | struct lttng_viewer_attach_session_request rq; |
| 228 | struct lttng_viewer_attach_session_response rp; |
| 229 | struct lttng_viewer_stream stream; |
| 230 | int ret, i; |
| 231 | |
| 232 | cmd.cmd = htobe32(VIEWER_ATTACH_SESSION); |
| 233 | cmd.data_size = sizeof(rq); |
| 234 | cmd.cmd_version = 0; |
| 235 | |
| 236 | rq.session_id = htobe64(id); |
| 237 | if (begin) { |
| 238 | rq.seek = htobe32(VIEWER_SEEK_BEGINNING); |
| 239 | } else { |
| 240 | rq.seek = htobe32(VIEWER_SEEK_LAST); |
| 241 | } |
| 242 | |
| 243 | do { |
| 244 | ret = send(control_sock, &cmd, sizeof(cmd), 0); |
| 245 | } while (ret < 0 && errno == EINTR); |
| 246 | if (ret < 0) { |
| 247 | fprintf(stderr, "Error sending cmd\n"); |
| 248 | goto error; |
| 249 | } |
| 250 | do { |
| 251 | ret = send(control_sock, &rq, sizeof(rq), 0); |
| 252 | } while (ret < 0 && errno == EINTR); |
| 253 | if (ret < 0) { |
| 254 | fprintf(stderr, "Error sending attach request\n"); |
| 255 | goto error; |
| 256 | } |
| 257 | |
| 258 | do { |
| 259 | ret = recv(control_sock, &rp, sizeof(rp), 0); |
| 260 | } while (ret < 0 && errno == EINTR); |
| 261 | if (ret < 0) { |
| 262 | fprintf(stderr, "Error receiving attach response\n"); |
| 263 | goto error; |
| 264 | } |
| 265 | fprintf(stderr, " - session attach response : %u\n", be32toh(rp.status)); |
| 266 | if (be32toh(rp.status) != VIEWER_ATTACH_OK) { |
| 267 | ret = 1; |
| 268 | goto end; |
| 269 | } |
| 270 | |
| 271 | session->stream_count = be32toh(rp.streams_count); |
| 272 | fprintf(stderr, " - Waiting for %" PRIu64 " streams\n", session->stream_count); |
| 273 | session->streams = zmalloc(session->stream_count * |
| 274 | sizeof(struct viewer_stream)); |
| 275 | if (!session->streams) { |
| 276 | ret = -1; |
| 277 | goto error; |
| 278 | } |
| 279 | |
| 280 | for (i = 0; i < be32toh(rp.streams_count); i++) { |
| 281 | do { |
| 282 | ret = recv(control_sock, &stream, sizeof(stream), 0); |
| 283 | } while (ret < 0 && errno == EINTR); |
| 284 | if (ret < 0) { |
| 285 | fprintf(stderr, "Error receiving stream\n"); |
| 286 | goto error; |
| 287 | } |
| 288 | fprintf(stderr, " - stream %" PRIu64 " : %s/%s\n", |
| 289 | be64toh(stream.id), stream.path_name, |
| 290 | stream.channel_name); |
| 291 | session->streams[i].id = be64toh(stream.id); |
| 292 | |
| 293 | session->streams[i].ctf_trace_id = be64toh(stream.ctf_trace_id); |
| 294 | session->streams[i].first_read = 1; |
| 295 | session->streams[i].mmap_base = mmap(NULL, mmap_size, PROT_READ | PROT_WRITE, |
| 296 | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); |
| 297 | if (session->streams[i].mmap_base == MAP_FAILED) { |
| 298 | fprintf(stderr, "mmap error\n"); |
| 299 | ret = -1; |
| 300 | goto error; |
| 301 | } |
| 302 | |
| 303 | if (be32toh(stream.metadata_flag)) { |
| 304 | session->streams[i].metadata_flag = 1; |
| 305 | unlink("testlivetrace"); |
| 306 | mkdir("testlivetrace", S_IRWXU | S_IRWXG); |
| 307 | snprintf(session->streams[i].path, |
| 308 | sizeof(session->streams[i].path), |
| 309 | "testlivetrace/%s", |
| 310 | stream.channel_name); |
| 311 | ret = open(session->streams[i].path, |
| 312 | O_WRONLY | O_CREAT | O_TRUNC, |
| 313 | S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP); |
| 314 | if (ret < 0) { |
| 315 | goto error; |
| 316 | } |
| 317 | session->streams[i].fd = ret; |
| 318 | } |
| 319 | } |
| 320 | ret = 0; |
| 321 | |
| 322 | end: |
| 323 | error: |
| 324 | return ret; |
| 325 | } |
| 326 | |
| 327 | #if 0 |
| 328 | /* useful debug */ |
| 329 | static |
| 330 | void dump_packet_index(struct lttng_packet_index *index) |
| 331 | { |
| 332 | printf(" - index : %lu, %lu, %lu, %lu, %lu, %lu, %lu\n", |
| 333 | be64toh(index->offset), |
| 334 | be64toh(index->packet_size), |
| 335 | be64toh(index->content_size), |
| 336 | be64toh(index->timestamp_begin), |
| 337 | be64toh(index->timestamp_end), |
| 338 | be64toh(index->events_discarded), |
| 339 | be64toh(index->stream_id)); |
| 340 | } |
| 341 | #endif |
| 342 | |
| 343 | static |
| 344 | int get_data_packet(int id, uint64_t offset, |
| 345 | uint64_t len) |
| 346 | { |
| 347 | struct lttng_viewer_cmd cmd; |
| 348 | struct lttng_viewer_get_packet rq; |
| 349 | struct lttng_viewer_trace_packet rp; |
| 350 | int ret; |
| 351 | |
| 352 | cmd.cmd = htobe32(VIEWER_GET_PACKET); |
| 353 | cmd.data_size = sizeof(rq); |
| 354 | cmd.cmd_version = 0; |
| 355 | |
| 356 | rq.stream_id = htobe64(session->streams[id].id); |
| 357 | /* Already in big endian. */ |
| 358 | rq.offset = offset; |
| 359 | rq.len = htobe32(len); |
| 360 | fprintf(stderr, " - get_packet "); |
| 361 | |
| 362 | do { |
| 363 | ret = send(control_sock, &cmd, sizeof(cmd), 0); |
| 364 | } while (ret < 0 && errno == EINTR); |
| 365 | if (ret < 0) { |
| 366 | fprintf(stderr, "Error sending cmd\n"); |
| 367 | goto error; |
| 368 | } |
| 369 | do { |
| 370 | ret = send(control_sock, &rq, sizeof(rq), 0); |
| 371 | } while (ret < 0 && errno == EINTR); |
| 372 | if (ret < 0) { |
| 373 | fprintf(stderr, "Error sending get_data_packet request\n"); |
| 374 | goto error; |
| 375 | } |
| 376 | do { |
| 377 | ret = recv(control_sock, &rp, sizeof(rp), 0); |
| 378 | } while (ret < 0 && errno == EINTR); |
| 379 | if (ret < 0) { |
| 380 | fprintf(stderr, "Error receiving data response\n"); |
| 381 | goto error; |
| 382 | } |
| 383 | rp.flags = be32toh(rp.flags); |
| 384 | |
| 385 | switch (be32toh(rp.status)) { |
| 386 | case VIEWER_GET_PACKET_OK: |
| 387 | fprintf(stderr, "OK\n"); |
| 388 | break; |
| 389 | case VIEWER_GET_PACKET_RETRY: |
| 390 | fprintf(stderr, "RETRY\n"); |
| 391 | ret = -1; |
| 392 | goto end; |
| 393 | case VIEWER_GET_PACKET_ERR: |
| 394 | if (rp.flags & LTTNG_VIEWER_FLAG_NEW_METADATA) { |
| 395 | fprintf(stderr, "NEW_METADATA\n"); |
| 396 | ret = 0; |
| 397 | goto end; |
| 398 | } |
| 399 | fprintf(stderr, "ERR\n"); |
| 400 | ret = -1; |
| 401 | goto end; |
| 402 | default: |
| 403 | fprintf(stderr, "UNKNOWN\n"); |
| 404 | ret = -1; |
| 405 | goto end; |
| 406 | } |
| 407 | |
| 408 | len = be32toh(rp.len); |
| 409 | fprintf(stderr, " - writing %" PRIu64" bytes to tracefile\n", len); |
| 410 | if (len <= 0) { |
| 411 | goto end; |
| 412 | } |
| 413 | |
| 414 | if (len > mmap_size) { |
| 415 | fprintf(stderr, "mmap_size not big enough\n"); |
| 416 | ret = -1; |
| 417 | goto error; |
| 418 | } |
| 419 | |
| 420 | do { |
| 421 | ret = recv(control_sock, session->streams[id].mmap_base, len, MSG_WAITALL); |
| 422 | } while (ret < 0 && errno == EINTR); |
| 423 | if (ret < 0) { |
| 424 | fprintf(stderr, "Error receiving trace packet\n"); |
| 425 | goto error; |
| 426 | } |
| 427 | |
| 428 | end: |
| 429 | error: |
| 430 | return ret; |
| 431 | } |
| 432 | |
| 433 | /* |
| 434 | * Return number of metadata bytes written or a negative value on error. |
| 435 | */ |
| 436 | static |
| 437 | int get_new_metadata(int id) |
| 438 | { |
| 439 | struct lttng_viewer_cmd cmd; |
| 440 | struct lttng_viewer_get_metadata rq; |
| 441 | struct lttng_viewer_metadata_packet rp; |
| 442 | int ret; |
| 443 | uint64_t i; |
| 444 | char *data = NULL; |
| 445 | uint64_t len = 0; |
| 446 | int metadata_stream_id = -1; |
| 447 | |
| 448 | cmd.cmd = htobe32(VIEWER_GET_METADATA); |
| 449 | cmd.data_size = sizeof(rq); |
| 450 | cmd.cmd_version = 0; |
| 451 | |
| 452 | /* find the metadata stream for this ctf_trace */ |
| 453 | for (i = 0; i < session->stream_count; i++) { |
| 454 | if (session->streams[i].metadata_flag && |
| 455 | session->streams[i].ctf_trace_id == |
| 456 | session->streams[id].ctf_trace_id) { |
| 457 | metadata_stream_id = i; |
| 458 | break; |
| 459 | } |
| 460 | } |
| 461 | if (metadata_stream_id < 0) { |
| 462 | fprintf(stderr, "No metadata stream found\n"); |
| 463 | ret = -1; |
| 464 | goto error; |
| 465 | } |
| 466 | |
| 467 | rq.stream_id = htobe64(session->streams[metadata_stream_id].id); |
| 468 | fprintf(stderr, " - get_metadata "); |
| 469 | |
| 470 | do { |
| 471 | ret = send(control_sock, &cmd, sizeof(cmd), 0); |
| 472 | } while (ret < 0 && errno == EINTR); |
| 473 | if (ret < 0) { |
| 474 | fprintf(stderr, "Error sending cmd\n"); |
| 475 | goto error; |
| 476 | } |
| 477 | do { |
| 478 | ret = send(control_sock, &rq, sizeof(rq), 0); |
| 479 | } while (ret < 0 && errno == EINTR); |
| 480 | if (ret < 0) { |
| 481 | fprintf(stderr, "Error sending get_metadata request\n"); |
| 482 | goto error; |
| 483 | } |
| 484 | do { |
| 485 | ret = recv(control_sock, &rp, sizeof(rp), 0); |
| 486 | } while (ret < 0 && errno == EINTR); |
| 487 | if (ret < 0) { |
| 488 | fprintf(stderr, "Error receiving metadata response\n"); |
| 489 | goto error; |
| 490 | } |
| 491 | switch (be32toh(rp.status)) { |
| 492 | case VIEWER_METADATA_OK: |
| 493 | fprintf(stderr, "OK\n"); |
| 494 | break; |
| 495 | case VIEWER_NO_NEW_METADATA: |
| 496 | fprintf(stderr, "NO NEW\n"); |
| 497 | ret = -1; |
| 498 | goto end; |
| 499 | case VIEWER_METADATA_ERR: |
| 500 | fprintf(stderr, "ERR\n"); |
| 501 | ret = -1; |
| 502 | goto end; |
| 503 | default: |
| 504 | fprintf(stderr, "UNKNOWN\n"); |
| 505 | ret = -1; |
| 506 | goto end; |
| 507 | } |
| 508 | |
| 509 | len = be64toh(rp.len); |
| 510 | fprintf(stderr, " - writing %" PRIu64" bytes to metadata\n", len); |
| 511 | if (len <= 0) { |
| 512 | goto end; |
| 513 | } |
| 514 | |
| 515 | data = zmalloc(len); |
| 516 | if (!data) { |
| 517 | perror("relay data zmalloc"); |
| 518 | goto error; |
| 519 | } |
| 520 | do { |
| 521 | ret = recv(control_sock, data, len, MSG_WAITALL); |
| 522 | } while (ret < 0 && errno == EINTR); |
| 523 | if (ret < 0) { |
| 524 | fprintf(stderr, "Error receiving trace packet\n"); |
| 525 | free(data); |
| 526 | goto error; |
| 527 | } |
| 528 | do { |
| 529 | ret = write(session->streams[metadata_stream_id].fd, data, len); |
| 530 | } while (ret < 0 && errno == EINTR); |
| 531 | if (ret < 0) { |
| 532 | free(data); |
| 533 | goto error; |
| 534 | } |
| 535 | free(data); |
| 536 | |
| 537 | /* FIXME : bad */ |
| 538 | ret = (int) len; |
| 539 | end: |
| 540 | error: |
| 541 | return ret; |
| 542 | } |
| 543 | |
| 544 | /* |
| 545 | * Get one index for a stream. |
| 546 | */ |
| 547 | int get_next_index(int id, struct packet_index *index) |
| 548 | { |
| 549 | struct lttng_viewer_cmd cmd; |
| 550 | struct lttng_viewer_get_next_index rq; |
| 551 | struct lttng_viewer_index rp; |
| 552 | int ret; |
| 553 | |
| 554 | cmd.cmd = htobe32(VIEWER_GET_NEXT_INDEX); |
| 555 | cmd.data_size = sizeof(rq); |
| 556 | cmd.cmd_version = 0; |
| 557 | |
| 558 | fprintf(stderr, " - get next index for stream %" PRIu64 "\n", |
| 559 | session->streams[id].id); |
| 560 | rq.stream_id = htobe64(session->streams[id].id); |
| 561 | |
| 562 | retry: |
| 563 | do { |
| 564 | ret = send(control_sock, &cmd, sizeof(cmd), 0); |
| 565 | } while (ret < 0 && errno == EINTR); |
| 566 | if (ret < 0) { |
| 567 | fprintf(stderr, "Error sending cmd\n"); |
| 568 | goto error; |
| 569 | } |
| 570 | do { |
| 571 | ret = send(control_sock, &rq, sizeof(rq), 0); |
| 572 | } while (ret < 0 && errno == EINTR); |
| 573 | if (ret < 0) { |
| 574 | fprintf(stderr, "Error sending get_next_index request\n"); |
| 575 | goto error; |
| 576 | } |
| 577 | do { |
| 578 | ret = recv(control_sock, &rp, sizeof(rp), 0); |
| 579 | } while (ret < 0 && errno == EINTR); |
| 580 | if (ret < 0) { |
| 581 | fprintf(stderr, "Error receiving index response\n"); |
| 582 | goto error; |
| 583 | } |
| 584 | fprintf(stderr, " - reply : %u ", be32toh(rp.status)); |
| 585 | |
| 586 | rp.flags = be32toh(rp.flags); |
| 587 | |
| 588 | switch (be32toh(rp.status)) { |
| 589 | case VIEWER_INDEX_INACTIVE: |
| 590 | fprintf(stderr, "(INACTIVE)\n"); |
| 591 | memset(index, 0, sizeof(struct packet_index)); |
| 592 | index->timestamp_end = be64toh(rp.timestamp_end); |
| 593 | break; |
| 594 | case VIEWER_INDEX_OK: |
| 595 | fprintf(stderr, "(OK), need metadata update : %u\n", |
| 596 | rp.flags & LTTNG_VIEWER_FLAG_NEW_METADATA); |
| 597 | index->offset = be64toh(rp.offset); |
| 598 | index->packet_size = be64toh(rp.packet_size); |
| 599 | index->content_size = be64toh(rp.content_size); |
| 600 | index->timestamp_begin = be64toh(rp.timestamp_begin); |
| 601 | index->timestamp_end = be64toh(rp.timestamp_end); |
| 602 | index->events_discarded = be64toh(rp.events_discarded); |
| 603 | |
| 604 | if (rp.flags & LTTNG_VIEWER_FLAG_NEW_METADATA) { |
| 605 | fprintf(stderr, "NEW METADATA NEEDED\n"); |
| 606 | ret = get_new_metadata(id); |
| 607 | if (ret < 0) { |
| 608 | goto error; |
| 609 | } |
| 610 | } |
| 611 | break; |
| 612 | case VIEWER_INDEX_RETRY: |
| 613 | fprintf(stderr, "(RETRY)\n"); |
| 614 | sleep(1); |
| 615 | goto retry; |
| 616 | case VIEWER_INDEX_HUP: |
| 617 | fprintf(stderr, "(HUP)\n"); |
| 618 | session->streams[id].id = -1ULL; |
| 619 | session->streams[id].fd = -1; |
| 620 | break; |
| 621 | case VIEWER_INDEX_ERR: |
| 622 | fprintf(stderr, "(ERR)\n"); |
| 623 | ret = -1; |
| 624 | goto error; |
| 625 | default: |
| 626 | fprintf(stderr, "SHOULD NOT HAPPEN\n"); |
| 627 | ret = -1; |
| 628 | goto error; |
| 629 | } |
| 630 | |
| 631 | error: |
| 632 | return ret; |
| 633 | } |
| 634 | |
| 635 | void ctf_live_packet_seek(struct bt_stream_pos *stream_pos, size_t index, |
| 636 | int whence) |
| 637 | { |
| 638 | struct ctf_stream_pos *pos; |
| 639 | struct ctf_file_stream *file_stream; |
| 640 | struct packet_index packet_index; |
| 641 | int ret; |
| 642 | |
| 643 | pos = ctf_pos(stream_pos); |
| 644 | file_stream = container_of(pos, struct ctf_file_stream, pos); |
| 645 | |
| 646 | fprintf(stderr, "BT GET_NEXT_INDEX %d\n", pos->fd); |
| 647 | ret = get_next_index(pos->fd, &packet_index); |
| 648 | if (ret < 0) { |
| 649 | fprintf(stderr, "get_next_index failed\n"); |
| 650 | return; |
| 651 | } |
| 652 | |
| 653 | pos->packet_size = packet_index.packet_size; |
| 654 | pos->content_size = packet_index.content_size; |
| 655 | pos->mmap_base_offset = 0; |
| 656 | pos->offset = 0; |
| 657 | if (packet_index.offset == EOF) { |
| 658 | pos->offset = EOF; |
| 659 | } else { |
| 660 | pos->offset = 0; |
| 661 | } |
| 662 | |
| 663 | file_stream->parent.cycles_timestamp = packet_index.timestamp_end; |
| 664 | file_stream->parent.real_timestamp = ctf_get_real_timestamp( |
| 665 | &file_stream->parent, packet_index.timestamp_end); |
| 666 | |
| 667 | if (pos->packet_size == 0) { |
| 668 | goto end; |
| 669 | } |
| 670 | |
| 671 | fprintf(stderr, "BT GET_DATA_PACKET\n"); |
| 672 | ret = get_data_packet(pos->fd, be64toh(packet_index.offset), |
| 673 | packet_index.packet_size / CHAR_BIT); |
| 674 | if (ret < 0) { |
| 675 | fprintf(stderr, "get_data_packet failed"); |
| 676 | return; |
| 677 | } |
| 678 | |
| 679 | fprintf(stderr, "BT MMAP %d\n", pos->fd); |
| 680 | fprintf(stderr, "packet_size : %lu, offset %lu, content_size %lu, timestamp_end : %lu, real : %lu\n", |
| 681 | packet_index.packet_size, |
| 682 | packet_index.offset, |
| 683 | packet_index.content_size, |
| 684 | packet_index.timestamp_end, |
| 685 | ctf_get_real_timestamp( |
| 686 | &file_stream->parent, packet_index.timestamp_end)); |
| 687 | if (!pos->base_mma) { |
| 688 | pos->base_mma = zmalloc(sizeof(*pos->base_mma)); |
| 689 | if (!pos->base_mma) { |
| 690 | fprintf(stderr, "alloc pos->base_mma\n"); |
| 691 | return; |
| 692 | } |
| 693 | } |
| 694 | |
| 695 | mmap_align_set_addr(pos->base_mma, session->streams[pos->fd].mmap_base); |
| 696 | if (pos->base_mma == MAP_FAILED) { |
| 697 | perror("Error mmaping"); |
| 698 | return; |
| 699 | } |
| 700 | |
| 701 | /* update trace_packet_header and stream_packet_context */ |
| 702 | if (pos->prot != PROT_WRITE && file_stream->parent.trace_packet_header) { |
| 703 | /* Read packet header */ |
| 704 | ret = generic_rw(&pos->parent, &file_stream->parent.trace_packet_header->p); |
| 705 | assert(!ret); |
| 706 | } |
| 707 | if (pos->prot != PROT_WRITE && file_stream->parent.stream_packet_context) { |
| 708 | /* Read packet context */ |
| 709 | ret = generic_rw(&pos->parent, &file_stream->parent.stream_packet_context->p); |
| 710 | assert(!ret); |
| 711 | } |
| 712 | |
| 713 | end: |
| 714 | return; |
| 715 | } |
| 716 | |
| 717 | int open_trace(struct bt_context **bt_ctx) |
| 718 | { |
| 719 | struct bt_mmap_stream *new_mmap_stream; |
| 720 | struct bt_mmap_stream_list mmap_list; |
| 721 | FILE *metadata_fp = NULL; |
| 722 | int i; |
| 723 | int ret = 0; |
| 724 | |
| 725 | *bt_ctx = bt_context_create(); |
| 726 | BT_INIT_LIST_HEAD(&mmap_list.head); |
| 727 | |
| 728 | for (i = 0; i < session->stream_count; i++) { |
| 729 | int total_metadata = 0; |
| 730 | |
| 731 | if (!session->streams[i].metadata_flag) { |
| 732 | new_mmap_stream = zmalloc(sizeof(struct bt_mmap_stream)); |
| 733 | /* |
| 734 | * The FD is unused when we handle manually the |
| 735 | * packet seek, so we store here the ID of the |
| 736 | * stream in our stream list to be able to use it |
| 737 | * later. |
| 738 | */ |
| 739 | new_mmap_stream->fd = i; |
| 740 | bt_list_add(&new_mmap_stream->list, &mmap_list.head); |
| 741 | } else { |
| 742 | /* Get all possible metadata before starting */ |
| 743 | do { |
| 744 | ret = get_new_metadata(i); |
| 745 | if (ret > 0) { |
| 746 | total_metadata += ret; |
| 747 | } |
| 748 | } while (ret > 0 || total_metadata == 0); |
| 749 | metadata_fp = fopen(session->streams[i].path, "r"); |
| 750 | } |
| 751 | } |
| 752 | |
| 753 | if (!metadata_fp) { |
| 754 | fprintf(stderr, "No metadata stream opened\n"); |
| 755 | goto end; |
| 756 | } |
| 757 | |
| 758 | ret = bt_context_add_trace(*bt_ctx, NULL, "ctf", |
| 759 | ctf_live_packet_seek, &mmap_list, metadata_fp); |
| 760 | if (ret < 0) { |
| 761 | fprintf(stderr, "Error adding trace\n"); |
| 762 | goto end; |
| 763 | } |
| 764 | |
| 765 | /* |
| 766 | begin_pos.type = BT_SEEK_BEGIN; |
| 767 | iter = bt_ctf_iter_create(bt_ctx, &begin_pos, NULL); |
| 768 | while ((event = bt_ctf_iter_read_event(iter)) != NULL) { |
| 769 | if (!skip) { |
| 770 | ret = sout->parent.event_cb(&sout->parent, event->parent->stream); |
| 771 | if (ret) { |
| 772 | fprintf(stderr, "[error] Writing event failed.\n"); |
| 773 | goto end; |
| 774 | } |
| 775 | } |
| 776 | |
| 777 | ret = bt_iter_next(bt_ctf_get_iter(iter)); |
| 778 | if (ret < 0) { |
| 779 | goto end; |
| 780 | } else if (ret == EAGAIN) { |
| 781 | skip = 1; |
| 782 | continue; |
| 783 | } |
| 784 | skip = 0; |
| 785 | } |
| 786 | */ |
| 787 | |
| 788 | end: |
| 789 | return ret; |
| 790 | } |
| 791 | |
| 792 | int setup_network_live(char *hostname, int begin) |
| 793 | { |
| 794 | int ret; |
| 795 | int session_id; |
| 796 | |
| 797 | session = zmalloc(sizeof(struct live_session)); |
| 798 | if (!session) { |
| 799 | goto error; |
| 800 | } |
| 801 | |
| 802 | ret = connect_viewer(hostname); |
| 803 | if (ret < 0) { |
| 804 | goto error; |
| 805 | } |
| 806 | fprintf(stderr, "* Connected\n"); |
| 807 | |
| 808 | fprintf(stderr, "* Establish connection and version check\n"); |
| 809 | ret = establish_connection(); |
| 810 | if (ret < 0) { |
| 811 | goto error; |
| 812 | } |
| 813 | |
| 814 | fprintf(stderr, "* List sessions\n"); |
| 815 | ret = list_sessions(); |
| 816 | if (ret < 0) { |
| 817 | fprintf(stderr, "* List error\n"); |
| 818 | goto error; |
| 819 | } else if (ret == 0) { |
| 820 | fprintf(stderr, "* No session to attach to, exiting\n"); |
| 821 | ret = 0; |
| 822 | goto end; |
| 823 | } |
| 824 | session_id = ret; |
| 825 | |
| 826 | do { |
| 827 | fprintf(stderr, "* Attach session %d\n", ret); |
| 828 | ret = attach_session(session_id, begin); |
| 829 | if (ret < 0) { |
| 830 | goto error; |
| 831 | } |
| 832 | } while (session->stream_count == 0); |
| 833 | |
| 834 | end: |
| 835 | return 0; |
| 836 | |
| 837 | error: |
| 838 | free(session->streams); |
| 839 | fprintf(stderr, "* Exiting %d\n", ret); |
| 840 | return ret; |
| 841 | } |