| 1 | /* |
| 2 | * fs.c |
| 3 | * |
| 4 | * Babeltrace CTF file system Reader Component |
| 5 | * |
| 6 | * Copyright 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
| 7 | * |
| 8 | * Author: Jérémie Galarneau <jeremie.galarneau@efficios.com> |
| 9 | * |
| 10 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 11 | * of this software and associated documentation files (the "Software"), to deal |
| 12 | * in the Software without restriction, including without limitation the rights |
| 13 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 14 | * copies of the Software, and to permit persons to whom the Software is |
| 15 | * furnished to do so, subject to the following conditions: |
| 16 | * |
| 17 | * The above copyright notice and this permission notice shall be included in |
| 18 | * all copies or substantial portions of the Software. |
| 19 | * |
| 20 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 21 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 22 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 23 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 24 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 25 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 26 | * SOFTWARE. |
| 27 | */ |
| 28 | |
| 29 | #include <babeltrace/plugin/plugin-system.h> |
| 30 | #include <babeltrace/ctf-ir/packet.h> |
| 31 | #include <babeltrace/plugin/notification/iterator.h> |
| 32 | #include <babeltrace/plugin/notification/stream.h> |
| 33 | #include <babeltrace/plugin/notification/event.h> |
| 34 | #include <babeltrace/plugin/notification/packet.h> |
| 35 | #include <babeltrace/plugin/notification/heap.h> |
| 36 | #include <glib.h> |
| 37 | #include <assert.h> |
| 38 | #include <unistd.h> |
| 39 | #include "fs.h" |
| 40 | #include "metadata.h" |
| 41 | #include "data-stream.h" |
| 42 | #include "file.h" |
| 43 | |
| 44 | #define PRINT_ERR_STREAM ctf_fs->error_fp |
| 45 | #define PRINT_PREFIX "ctf-fs" |
| 46 | #include "print.h" |
| 47 | |
| 48 | static bool ctf_fs_debug; |
| 49 | |
| 50 | static |
| 51 | struct bt_notification *ctf_fs_iterator_get( |
| 52 | struct bt_notification_iterator *iterator) |
| 53 | { |
| 54 | struct ctf_fs_iterator *ctf_it = |
| 55 | bt_notification_iterator_get_private_data(iterator); |
| 56 | |
| 57 | return bt_get(ctf_it->current_notification); |
| 58 | } |
| 59 | |
| 60 | static |
| 61 | enum bt_notification_iterator_status ctf_fs_iterator_get_next_notification( |
| 62 | struct ctf_fs_iterator *it, |
| 63 | struct ctf_fs_stream *stream, |
| 64 | struct bt_notification **notification) |
| 65 | { |
| 66 | enum bt_ctf_notif_iter_status status; |
| 67 | enum bt_notification_iterator_status ret; |
| 68 | |
| 69 | if (stream->end_reached) { |
| 70 | status = BT_CTF_NOTIF_ITER_STATUS_EOF; |
| 71 | goto end; |
| 72 | } |
| 73 | |
| 74 | status = bt_ctf_notif_iter_get_next_notification(stream->notif_iter, |
| 75 | notification); |
| 76 | if (status != BT_CTF_NOTIF_ITER_STATUS_OK && |
| 77 | status != BT_CTF_NOTIF_ITER_STATUS_EOF) { |
| 78 | goto end; |
| 79 | } |
| 80 | |
| 81 | /* Should be handled in bt_ctf_notif_iter_get_next_notification. */ |
| 82 | if (status == BT_CTF_NOTIF_ITER_STATUS_EOF) { |
| 83 | *notification = bt_notification_stream_end_create( |
| 84 | stream->stream); |
| 85 | if (!*notification) { |
| 86 | status = BT_CTF_NOTIF_ITER_STATUS_ERROR; |
| 87 | } |
| 88 | status = BT_CTF_NOTIF_ITER_STATUS_OK; |
| 89 | stream->end_reached = true; |
| 90 | } |
| 91 | end: |
| 92 | switch (status) { |
| 93 | case BT_CTF_NOTIF_ITER_STATUS_EOF: |
| 94 | ret = BT_NOTIFICATION_ITERATOR_STATUS_END; |
| 95 | break; |
| 96 | case BT_CTF_NOTIF_ITER_STATUS_OK: |
| 97 | ret = BT_NOTIFICATION_ITERATOR_STATUS_OK; |
| 98 | break; |
| 99 | case BT_CTF_NOTIF_ITER_STATUS_AGAIN: |
| 100 | /* |
| 101 | * Should not make it this far as this is medium-specific; |
| 102 | * there is nothing for the user to do and it should have been |
| 103 | * handled upstream. |
| 104 | */ |
| 105 | assert(0); |
| 106 | case BT_CTF_NOTIF_ITER_STATUS_INVAL: |
| 107 | /* No argument provided by the user, so don't return INVAL. */ |
| 108 | case BT_CTF_NOTIF_ITER_STATUS_ERROR: |
| 109 | default: |
| 110 | ret = BT_NOTIFICATION_ITERATOR_STATUS_ERROR; |
| 111 | break; |
| 112 | } |
| 113 | return ret; |
| 114 | } |
| 115 | |
| 116 | /* |
| 117 | * Remove me. This is a temporary work-around due to our inhability to use |
| 118 | * libbabeltrace-ctf from libbabeltrace-plugin. |
| 119 | */ |
| 120 | static |
| 121 | struct bt_ctf_stream *internal_bt_notification_get_stream( |
| 122 | struct bt_notification *notification) |
| 123 | { |
| 124 | struct bt_ctf_stream *stream = NULL; |
| 125 | |
| 126 | assert(notification); |
| 127 | switch (bt_notification_get_type(notification)) { |
| 128 | case BT_NOTIFICATION_TYPE_EVENT: |
| 129 | { |
| 130 | struct bt_ctf_event *event; |
| 131 | |
| 132 | event = bt_notification_event_get_event(notification); |
| 133 | stream = bt_ctf_event_get_stream(event); |
| 134 | bt_put(event); |
| 135 | break; |
| 136 | } |
| 137 | case BT_NOTIFICATION_TYPE_PACKET_START: |
| 138 | { |
| 139 | struct bt_ctf_packet *packet; |
| 140 | |
| 141 | packet = bt_notification_packet_start_get_packet(notification); |
| 142 | stream = bt_ctf_packet_get_stream(packet); |
| 143 | bt_put(packet); |
| 144 | break; |
| 145 | } |
| 146 | case BT_NOTIFICATION_TYPE_PACKET_END: |
| 147 | { |
| 148 | struct bt_ctf_packet *packet; |
| 149 | |
| 150 | packet = bt_notification_packet_end_get_packet(notification); |
| 151 | stream = bt_ctf_packet_get_stream(packet); |
| 152 | bt_put(packet); |
| 153 | break; |
| 154 | } |
| 155 | case BT_NOTIFICATION_TYPE_STREAM_END: |
| 156 | stream = bt_notification_stream_end_get_stream(notification); |
| 157 | break; |
| 158 | default: |
| 159 | goto end; |
| 160 | } |
| 161 | end: |
| 162 | return stream; |
| 163 | } |
| 164 | |
| 165 | static |
| 166 | enum bt_notification_iterator_status populate_heap(struct ctf_fs_iterator *it) |
| 167 | { |
| 168 | size_t i, pending_streams_count = it->pending_streams->len; |
| 169 | enum bt_notification_iterator_status ret = |
| 170 | BT_NOTIFICATION_ITERATOR_STATUS_OK; |
| 171 | |
| 172 | /* Insert one stream-associated notification for each stream. */ |
| 173 | for (i = 0; i < pending_streams_count; i++) { |
| 174 | struct bt_notification *notification; |
| 175 | struct ctf_fs_stream *fs_stream; |
| 176 | struct bt_ctf_stream *stream; |
| 177 | size_t pending_stream_index = pending_streams_count - 1 - i; |
| 178 | |
| 179 | fs_stream = g_ptr_array_index(it->pending_streams, |
| 180 | pending_stream_index); |
| 181 | |
| 182 | do { |
| 183 | int heap_ret; |
| 184 | |
| 185 | ret = ctf_fs_iterator_get_next_notification( |
| 186 | it, fs_stream, ¬ification); |
| 187 | if (ret && ret != BT_NOTIFICATION_ITERATOR_STATUS_END) { |
| 188 | printf_debug("Failed to populate heap at stream %zu\n", |
| 189 | pending_stream_index); |
| 190 | goto end; |
| 191 | } |
| 192 | |
| 193 | stream = internal_bt_notification_get_stream( |
| 194 | notification); |
| 195 | if (stream) { |
| 196 | gboolean inserted; |
| 197 | |
| 198 | /* |
| 199 | * Associate pending ctf_fs_stream to |
| 200 | * bt_ctf_stream. Ownership of stream |
| 201 | * is passed to the stream ht. |
| 202 | */ |
| 203 | inserted = g_hash_table_insert(it->stream_ht, |
| 204 | stream, fs_stream); |
| 205 | if (!inserted) { |
| 206 | ret = BT_NOTIFICATION_ITERATOR_STATUS_NOMEM; |
| 207 | printf_debug("Failed to associate fs stream to ctf stream\n"); |
| 208 | goto end; |
| 209 | } |
| 210 | } |
| 211 | |
| 212 | heap_ret = bt_notification_heap_insert( |
| 213 | it->pending_notifications, |
| 214 | notification); |
| 215 | bt_put(notification); |
| 216 | if (heap_ret) { |
| 217 | ret = BT_NOTIFICATION_ITERATOR_STATUS_NOMEM; |
| 218 | printf_debug("Failed to insert notification in heap\n"); |
| 219 | goto end; |
| 220 | } |
| 221 | } while (!stream && ret != BT_NOTIFICATION_ITERATOR_STATUS_END); |
| 222 | /* |
| 223 | * Set NULL so the destruction callback registered with the |
| 224 | * array is not invoked on the stream (its ownership was |
| 225 | * transferred to the streams hashtable). |
| 226 | */ |
| 227 | g_ptr_array_index(it->pending_streams, |
| 228 | pending_stream_index) = NULL; |
| 229 | g_ptr_array_remove_index(it->pending_streams, |
| 230 | pending_stream_index); |
| 231 | } |
| 232 | |
| 233 | g_ptr_array_free(it->pending_streams, TRUE); |
| 234 | it->pending_streams = NULL; |
| 235 | end: |
| 236 | return ret; |
| 237 | } |
| 238 | |
| 239 | static |
| 240 | enum bt_notification_iterator_status ctf_fs_iterator_next( |
| 241 | struct bt_notification_iterator *iterator) |
| 242 | { |
| 243 | int heap_ret; |
| 244 | struct bt_ctf_stream *stream = NULL; |
| 245 | struct ctf_fs_stream *fs_stream; |
| 246 | struct bt_notification *notification; |
| 247 | struct bt_notification *next_stream_notification; |
| 248 | enum bt_notification_iterator_status ret = |
| 249 | BT_NOTIFICATION_ITERATOR_STATUS_OK; |
| 250 | struct ctf_fs_iterator *ctf_it = |
| 251 | bt_notification_iterator_get_private_data(iterator); |
| 252 | |
| 253 | notification = bt_notification_heap_pop(ctf_it->pending_notifications); |
| 254 | if (!notification && !ctf_it->pending_streams) { |
| 255 | ret = BT_NOTIFICATION_ITERATOR_STATUS_END; |
| 256 | goto end; |
| 257 | } |
| 258 | |
| 259 | if (!notification && ctf_it->pending_streams) { |
| 260 | /* |
| 261 | * Insert at one notification per stream in the heap and pop |
| 262 | * one. |
| 263 | */ |
| 264 | ret = populate_heap(ctf_it); |
| 265 | if (ret) { |
| 266 | goto end; |
| 267 | } |
| 268 | |
| 269 | notification = bt_notification_heap_pop( |
| 270 | ctf_it->pending_notifications); |
| 271 | if (!notification) { |
| 272 | ret = BT_NOTIFICATION_ITERATOR_STATUS_END; |
| 273 | goto end; |
| 274 | } |
| 275 | } |
| 276 | |
| 277 | /* notification is set from here. */ |
| 278 | |
| 279 | stream = internal_bt_notification_get_stream(notification); |
| 280 | if (!stream) { |
| 281 | /* |
| 282 | * The current notification is not associated to a particular |
| 283 | * stream, there is no need to insert a new notification from |
| 284 | * a stream in the heap. |
| 285 | */ |
| 286 | goto end; |
| 287 | } |
| 288 | |
| 289 | fs_stream = g_hash_table_lookup(ctf_it->stream_ht, stream); |
| 290 | if (!fs_stream) { |
| 291 | /* We have reached this stream's end. */ |
| 292 | goto end; |
| 293 | } |
| 294 | |
| 295 | ret = ctf_fs_iterator_get_next_notification(ctf_it, fs_stream, |
| 296 | &next_stream_notification); |
| 297 | if ((ret && ret != BT_NOTIFICATION_ITERATOR_STATUS_END)) { |
| 298 | heap_ret = bt_notification_heap_insert( |
| 299 | ctf_it->pending_notifications, notification); |
| 300 | |
| 301 | assert(!next_stream_notification); |
| 302 | if (heap_ret) { |
| 303 | /* |
| 304 | * We're dropping the most recent notification, but at |
| 305 | * this point, something is seriously wrong... |
| 306 | */ |
| 307 | ret = BT_NOTIFICATION_ITERATOR_STATUS_NOMEM; |
| 308 | } |
| 309 | BT_PUT(notification); |
| 310 | goto end; |
| 311 | } |
| 312 | |
| 313 | if (ret == BT_NOTIFICATION_ITERATOR_STATUS_END) { |
| 314 | gboolean success; |
| 315 | |
| 316 | /* Remove stream. */ |
| 317 | success = g_hash_table_remove(ctf_it->stream_ht, stream); |
| 318 | assert(success); |
| 319 | ret = BT_NOTIFICATION_ITERATOR_STATUS_OK; |
| 320 | } else { |
| 321 | heap_ret = bt_notification_heap_insert(ctf_it->pending_notifications, |
| 322 | next_stream_notification); |
| 323 | BT_PUT(next_stream_notification); |
| 324 | if (heap_ret) { |
| 325 | /* |
| 326 | * We're dropping the most recent notification... |
| 327 | */ |
| 328 | ret = BT_NOTIFICATION_ITERATOR_STATUS_NOMEM; |
| 329 | } |
| 330 | } |
| 331 | |
| 332 | /* |
| 333 | * Ensure that the stream is removed from both pending_streams and |
| 334 | * the streams hashtable on reception of the "end of stream" |
| 335 | * notification. |
| 336 | */ |
| 337 | end: |
| 338 | BT_MOVE(ctf_it->current_notification, notification); |
| 339 | bt_put(stream); |
| 340 | return ret; |
| 341 | } |
| 342 | |
| 343 | static |
| 344 | void ctf_fs_iterator_destroy_data(struct ctf_fs_iterator *ctf_it) |
| 345 | { |
| 346 | bt_put(ctf_it->current_notification); |
| 347 | bt_put(ctf_it->pending_notifications); |
| 348 | if (ctf_it->pending_streams) { |
| 349 | g_ptr_array_free(ctf_it->pending_streams, TRUE); |
| 350 | } |
| 351 | if (ctf_it->stream_ht) { |
| 352 | g_hash_table_destroy(ctf_it->stream_ht); |
| 353 | } |
| 354 | g_free(ctf_it); |
| 355 | } |
| 356 | |
| 357 | static |
| 358 | void ctf_fs_iterator_destroy(struct bt_notification_iterator *it) |
| 359 | { |
| 360 | void *data = bt_notification_iterator_get_private_data(it); |
| 361 | |
| 362 | ctf_fs_iterator_destroy_data(data); |
| 363 | } |
| 364 | |
| 365 | static |
| 366 | bool compare_notifications(struct bt_notification *a, struct bt_notification *b, |
| 367 | void *unused) |
| 368 | { |
| 369 | return a < b; |
| 370 | } |
| 371 | |
| 372 | static |
| 373 | void stream_destroy(void *stream) |
| 374 | { |
| 375 | ctf_fs_stream_destroy((struct ctf_fs_stream *) stream); |
| 376 | } |
| 377 | |
| 378 | static |
| 379 | int open_trace_streams(struct ctf_fs_component *ctf_fs, |
| 380 | struct ctf_fs_iterator *ctf_it) |
| 381 | { |
| 382 | int ret = 0; |
| 383 | const char *name; |
| 384 | GError *error = NULL; |
| 385 | GDir *dir = g_dir_open(ctf_fs->trace_path->str, 0, &error); |
| 386 | |
| 387 | if (!dir) { |
| 388 | PERR("Cannot open directory \"%s\": %s (code %d)\n", |
| 389 | ctf_fs->trace_path->str, error->message, |
| 390 | error->code); |
| 391 | goto error; |
| 392 | } |
| 393 | |
| 394 | while ((name = g_dir_read_name(dir))) { |
| 395 | struct ctf_fs_file *file = NULL; |
| 396 | struct ctf_fs_stream *stream = NULL; |
| 397 | |
| 398 | if (!strcmp(name, CTF_FS_METADATA_FILENAME)) { |
| 399 | /* Ignore the metadata stream. */ |
| 400 | PDBG("Ignoring metadata file \"%s\"\n", |
| 401 | name); |
| 402 | continue; |
| 403 | } |
| 404 | |
| 405 | if (name[0] == '.') { |
| 406 | PDBG("Ignoring hidden file \"%s\"\n", |
| 407 | name); |
| 408 | continue; |
| 409 | } |
| 410 | |
| 411 | /* Create the file. */ |
| 412 | file = ctf_fs_file_create(ctf_fs); |
| 413 | if (!file) { |
| 414 | PERR("Cannot create stream file object\n"); |
| 415 | goto error; |
| 416 | } |
| 417 | |
| 418 | /* Create full path string. */ |
| 419 | g_string_append_printf(file->path, "%s/%s", |
| 420 | ctf_fs->trace_path->str, name); |
| 421 | if (!g_file_test(file->path->str, G_FILE_TEST_IS_REGULAR)) { |
| 422 | PDBG("Ignoring non-regular file \"%s\"\n", name); |
| 423 | ctf_fs_file_destroy(file); |
| 424 | continue; |
| 425 | } |
| 426 | |
| 427 | /* Open the file. */ |
| 428 | if (ctf_fs_file_open(ctf_fs, file, "rb")) { |
| 429 | ctf_fs_file_destroy(file); |
| 430 | goto error; |
| 431 | } |
| 432 | |
| 433 | /* Create a private stream; file ownership is passed to it. */ |
| 434 | stream = ctf_fs_stream_create(ctf_fs, file); |
| 435 | if (!stream) { |
| 436 | ctf_fs_file_destroy(file); |
| 437 | goto error; |
| 438 | } |
| 439 | |
| 440 | g_ptr_array_add(ctf_it->pending_streams, stream); |
| 441 | } |
| 442 | |
| 443 | goto end; |
| 444 | error: |
| 445 | ret = -1; |
| 446 | end: |
| 447 | if (dir) { |
| 448 | g_dir_close(dir); |
| 449 | dir = NULL; |
| 450 | } |
| 451 | if (error) { |
| 452 | g_error_free(error); |
| 453 | } |
| 454 | return ret; |
| 455 | } |
| 456 | |
| 457 | static |
| 458 | enum bt_component_status ctf_fs_iterator_init(struct bt_component *source, |
| 459 | struct bt_notification_iterator *it) |
| 460 | { |
| 461 | struct ctf_fs_iterator *ctf_it; |
| 462 | struct ctf_fs_component *ctf_fs; |
| 463 | enum bt_component_status ret = BT_COMPONENT_STATUS_OK; |
| 464 | |
| 465 | assert(source && it); |
| 466 | |
| 467 | ctf_fs = bt_component_get_private_data(source); |
| 468 | if (!ctf_fs) { |
| 469 | ret = BT_COMPONENT_STATUS_INVALID; |
| 470 | goto end; |
| 471 | } |
| 472 | |
| 473 | ctf_it = g_new0(struct ctf_fs_iterator, 1); |
| 474 | if (!ctf_it) { |
| 475 | ret = BT_COMPONENT_STATUS_NOMEM; |
| 476 | goto end; |
| 477 | } |
| 478 | |
| 479 | ctf_it->stream_ht = g_hash_table_new_full(g_direct_hash, |
| 480 | g_direct_equal, bt_put, stream_destroy); |
| 481 | if (!ctf_it->stream_ht) { |
| 482 | goto error; |
| 483 | } |
| 484 | ctf_it->pending_streams = g_ptr_array_new_with_free_func( |
| 485 | stream_destroy); |
| 486 | if (!ctf_it->pending_streams) { |
| 487 | goto error; |
| 488 | } |
| 489 | ctf_it->pending_notifications = bt_notification_heap_create( |
| 490 | compare_notifications, NULL); |
| 491 | if (!ctf_it->pending_notifications) { |
| 492 | goto error; |
| 493 | } |
| 494 | |
| 495 | ret = open_trace_streams(ctf_fs, ctf_it); |
| 496 | if (ret) { |
| 497 | goto error; |
| 498 | } |
| 499 | |
| 500 | ret = bt_notification_iterator_set_get_cb(it, ctf_fs_iterator_get); |
| 501 | if (ret) { |
| 502 | goto error; |
| 503 | } |
| 504 | |
| 505 | ret = bt_notification_iterator_set_next_cb(it, ctf_fs_iterator_next); |
| 506 | if (ret) { |
| 507 | goto error; |
| 508 | } |
| 509 | |
| 510 | ret = bt_notification_iterator_set_destroy_cb(it, |
| 511 | ctf_fs_iterator_destroy); |
| 512 | if (ret) { |
| 513 | goto error; |
| 514 | } |
| 515 | |
| 516 | ret = bt_notification_iterator_set_private_data(it, ctf_it); |
| 517 | if (ret) { |
| 518 | goto error; |
| 519 | } |
| 520 | end: |
| 521 | return ret; |
| 522 | error: |
| 523 | (void) bt_notification_iterator_set_private_data(it, NULL); |
| 524 | ctf_fs_iterator_destroy_data(ctf_it); |
| 525 | goto end; |
| 526 | } |
| 527 | |
| 528 | static |
| 529 | void ctf_fs_destroy_data(struct ctf_fs_component *ctf_fs) |
| 530 | { |
| 531 | if (ctf_fs->trace_path) { |
| 532 | g_string_free(ctf_fs->trace_path, TRUE); |
| 533 | } |
| 534 | if (ctf_fs->metadata) { |
| 535 | ctf_fs_metadata_fini(ctf_fs->metadata); |
| 536 | g_free(ctf_fs->metadata); |
| 537 | } |
| 538 | g_free(ctf_fs); |
| 539 | } |
| 540 | |
| 541 | static |
| 542 | void ctf_fs_destroy(struct bt_component *component) |
| 543 | { |
| 544 | void *data = bt_component_get_private_data(component); |
| 545 | |
| 546 | ctf_fs_destroy_data(data); |
| 547 | } |
| 548 | |
| 549 | static |
| 550 | struct ctf_fs_component *ctf_fs_create(struct bt_value *params) |
| 551 | { |
| 552 | struct ctf_fs_component *ctf_fs; |
| 553 | struct bt_value *value = NULL; |
| 554 | const char *path; |
| 555 | enum bt_value_status ret; |
| 556 | |
| 557 | ctf_fs = g_new0(struct ctf_fs_component, 1); |
| 558 | if (!ctf_fs) { |
| 559 | goto end; |
| 560 | } |
| 561 | |
| 562 | /* FIXME: should probably look for a source URI */ |
| 563 | value = bt_value_map_get(params, "path"); |
| 564 | if (!value || bt_value_is_null(value) || !bt_value_is_string(value)) { |
| 565 | goto error; |
| 566 | } |
| 567 | |
| 568 | ret = bt_value_string_get(value, &path); |
| 569 | if (ret != BT_VALUE_STATUS_OK) { |
| 570 | goto error; |
| 571 | } |
| 572 | |
| 573 | ctf_fs->trace_path = g_string_new(path); |
| 574 | if (!ctf_fs->trace_path) { |
| 575 | goto error; |
| 576 | } |
| 577 | ctf_fs->error_fp = stderr; |
| 578 | ctf_fs->page_size = (size_t) getpagesize(); |
| 579 | |
| 580 | // FIXME: check error. |
| 581 | ctf_fs->metadata = g_new0(struct ctf_fs_metadata, 1); |
| 582 | if (!ctf_fs->metadata) { |
| 583 | goto error; |
| 584 | } |
| 585 | ctf_fs_metadata_set_trace(ctf_fs); |
| 586 | goto end; |
| 587 | |
| 588 | error: |
| 589 | ctf_fs_destroy_data(ctf_fs); |
| 590 | ctf_fs = NULL; |
| 591 | end: |
| 592 | BT_PUT(value); |
| 593 | return ctf_fs; |
| 594 | } |
| 595 | |
| 596 | BT_HIDDEN |
| 597 | enum bt_component_status ctf_fs_init(struct bt_component *source, |
| 598 | struct bt_value *params) |
| 599 | { |
| 600 | struct ctf_fs_component *ctf_fs; |
| 601 | enum bt_component_status ret = BT_COMPONENT_STATUS_OK; |
| 602 | |
| 603 | assert(source); |
| 604 | ctf_fs_debug = g_strcmp0(getenv("CTF_FS_DEBUG"), "1") == 0; |
| 605 | ctf_fs = ctf_fs_create(params); |
| 606 | if (!ctf_fs) { |
| 607 | ret = BT_COMPONENT_STATUS_NOMEM; |
| 608 | goto end; |
| 609 | } |
| 610 | |
| 611 | ret = bt_component_set_destroy_cb(source, ctf_fs_destroy); |
| 612 | if (ret != BT_COMPONENT_STATUS_OK) { |
| 613 | goto error; |
| 614 | } |
| 615 | |
| 616 | ret = bt_component_set_private_data(source, ctf_fs); |
| 617 | if (ret != BT_COMPONENT_STATUS_OK) { |
| 618 | goto error; |
| 619 | } |
| 620 | |
| 621 | ret = bt_component_source_set_iterator_init_cb(source, |
| 622 | ctf_fs_iterator_init); |
| 623 | if (ret != BT_COMPONENT_STATUS_OK) { |
| 624 | goto error; |
| 625 | } |
| 626 | end: |
| 627 | return ret; |
| 628 | error: |
| 629 | (void) bt_component_set_private_data(source, NULL); |
| 630 | ctf_fs_destroy_data(ctf_fs); |
| 631 | return ret; |
| 632 | } |