| 1 | /* |
| 2 | * Copyright (C) 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
| 3 | * |
| 4 | * SPDX-License-Identifier: LGPL-2.1-only |
| 5 | * |
| 6 | */ |
| 7 | |
| 8 | #include <common/error.h> |
| 9 | #include <common/macros.h> |
| 10 | #include <common/mi-lttng.h> |
| 11 | #include <lttng/condition/condition-internal.h> |
| 12 | #include <lttng/condition/session-rotation-internal.h> |
| 13 | #include <lttng/location-internal.h> |
| 14 | #include <stdbool.h> |
| 15 | |
| 16 | static |
| 17 | bool lttng_condition_session_rotation_validate( |
| 18 | const struct lttng_condition *condition); |
| 19 | static |
| 20 | int lttng_condition_session_rotation_serialize( |
| 21 | const struct lttng_condition *condition, |
| 22 | struct lttng_payload *payload); |
| 23 | static |
| 24 | bool lttng_condition_session_rotation_is_equal(const struct lttng_condition *_a, |
| 25 | const struct lttng_condition *_b); |
| 26 | static |
| 27 | void lttng_condition_session_rotation_destroy( |
| 28 | struct lttng_condition *condition); |
| 29 | |
| 30 | static |
| 31 | enum lttng_error_code lttng_condition_session_rotation_mi_serialize( |
| 32 | const struct lttng_condition *condition, |
| 33 | struct mi_writer *writer); |
| 34 | |
| 35 | static const |
| 36 | struct lttng_condition rotation_condition_template = { |
| 37 | /* .type omitted; shall be set on creation. */ |
| 38 | .validate = lttng_condition_session_rotation_validate, |
| 39 | .serialize = lttng_condition_session_rotation_serialize, |
| 40 | .equal = lttng_condition_session_rotation_is_equal, |
| 41 | .destroy = lttng_condition_session_rotation_destroy, |
| 42 | .mi_serialize = lttng_condition_session_rotation_mi_serialize, |
| 43 | }; |
| 44 | |
| 45 | static |
| 46 | int lttng_evaluation_session_rotation_serialize( |
| 47 | const struct lttng_evaluation *evaluation, |
| 48 | struct lttng_payload *payload); |
| 49 | static |
| 50 | void lttng_evaluation_session_rotation_destroy( |
| 51 | struct lttng_evaluation *evaluation); |
| 52 | |
| 53 | static const |
| 54 | struct lttng_evaluation rotation_evaluation_template = { |
| 55 | /* .type omitted; shall be set on creation. */ |
| 56 | .serialize = lttng_evaluation_session_rotation_serialize, |
| 57 | .destroy = lttng_evaluation_session_rotation_destroy, |
| 58 | }; |
| 59 | |
| 60 | static |
| 61 | bool is_rotation_condition(const struct lttng_condition *condition) |
| 62 | { |
| 63 | enum lttng_condition_type type = lttng_condition_get_type(condition); |
| 64 | |
| 65 | return type == LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING || |
| 66 | type == LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED; |
| 67 | } |
| 68 | |
| 69 | static |
| 70 | bool is_rotation_evaluation(const struct lttng_evaluation *evaluation) |
| 71 | { |
| 72 | enum lttng_condition_type type = lttng_evaluation_get_type(evaluation); |
| 73 | |
| 74 | return type == LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING || |
| 75 | type == LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED; |
| 76 | } |
| 77 | |
| 78 | static |
| 79 | bool lttng_condition_session_rotation_validate( |
| 80 | const struct lttng_condition *condition) |
| 81 | { |
| 82 | bool valid = false; |
| 83 | struct lttng_condition_session_rotation *rotation; |
| 84 | |
| 85 | if (!condition) { |
| 86 | goto end; |
| 87 | } |
| 88 | |
| 89 | rotation = container_of(condition, |
| 90 | struct lttng_condition_session_rotation, parent); |
| 91 | if (!rotation->session_name) { |
| 92 | ERR("Invalid session rotation condition: a target session name must be set."); |
| 93 | goto end; |
| 94 | } |
| 95 | |
| 96 | valid = true; |
| 97 | end: |
| 98 | return valid; |
| 99 | } |
| 100 | |
| 101 | static |
| 102 | int lttng_condition_session_rotation_serialize( |
| 103 | const struct lttng_condition *condition, |
| 104 | struct lttng_payload *payload) |
| 105 | { |
| 106 | int ret; |
| 107 | size_t session_name_len; |
| 108 | struct lttng_condition_session_rotation *rotation; |
| 109 | struct lttng_condition_session_rotation_comm rotation_comm; |
| 110 | |
| 111 | if (!condition || !is_rotation_condition(condition)) { |
| 112 | ret = -1; |
| 113 | goto end; |
| 114 | } |
| 115 | |
| 116 | DBG("Serializing session rotation condition"); |
| 117 | rotation = container_of(condition, struct lttng_condition_session_rotation, |
| 118 | parent); |
| 119 | |
| 120 | session_name_len = strlen(rotation->session_name) + 1; |
| 121 | if (session_name_len > LTTNG_NAME_MAX) { |
| 122 | ret = -1; |
| 123 | goto end; |
| 124 | } |
| 125 | |
| 126 | rotation_comm.session_name_len = session_name_len; |
| 127 | ret = lttng_dynamic_buffer_append(&payload->buffer, &rotation_comm, |
| 128 | sizeof(rotation_comm)); |
| 129 | if (ret) { |
| 130 | goto end; |
| 131 | } |
| 132 | ret = lttng_dynamic_buffer_append(&payload->buffer, |
| 133 | rotation->session_name, session_name_len); |
| 134 | if (ret) { |
| 135 | goto end; |
| 136 | } |
| 137 | end: |
| 138 | return ret; |
| 139 | } |
| 140 | |
| 141 | static |
| 142 | bool lttng_condition_session_rotation_is_equal(const struct lttng_condition *_a, |
| 143 | const struct lttng_condition *_b) |
| 144 | { |
| 145 | bool is_equal = false; |
| 146 | struct lttng_condition_session_rotation *a, *b; |
| 147 | |
| 148 | a = container_of(_a, struct lttng_condition_session_rotation, parent); |
| 149 | b = container_of(_b, struct lttng_condition_session_rotation, parent); |
| 150 | |
| 151 | /* Both session names must be set or both must be unset. */ |
| 152 | if ((a->session_name && !b->session_name) || |
| 153 | (!a->session_name && b->session_name)) { |
| 154 | WARN("Comparing session rotation conditions with uninitialized session names."); |
| 155 | goto end; |
| 156 | } |
| 157 | |
| 158 | if (a->session_name && b->session_name && |
| 159 | strcmp(a->session_name, b->session_name)) { |
| 160 | goto end; |
| 161 | } |
| 162 | |
| 163 | is_equal = true; |
| 164 | end: |
| 165 | return is_equal; |
| 166 | } |
| 167 | |
| 168 | static |
| 169 | void lttng_condition_session_rotation_destroy( |
| 170 | struct lttng_condition *condition) |
| 171 | { |
| 172 | struct lttng_condition_session_rotation *rotation; |
| 173 | |
| 174 | rotation = container_of(condition, |
| 175 | struct lttng_condition_session_rotation, parent); |
| 176 | |
| 177 | free(rotation->session_name); |
| 178 | free(rotation); |
| 179 | } |
| 180 | |
| 181 | static |
| 182 | struct lttng_condition *lttng_condition_session_rotation_create( |
| 183 | enum lttng_condition_type type) |
| 184 | { |
| 185 | struct lttng_condition_session_rotation *condition; |
| 186 | |
| 187 | condition = zmalloc(sizeof(struct lttng_condition_session_rotation)); |
| 188 | if (!condition) { |
| 189 | return NULL; |
| 190 | } |
| 191 | |
| 192 | memcpy(&condition->parent, &rotation_condition_template, |
| 193 | sizeof(condition->parent)); |
| 194 | lttng_condition_init(&condition->parent, type); |
| 195 | return &condition->parent; |
| 196 | } |
| 197 | |
| 198 | struct lttng_condition *lttng_condition_session_rotation_ongoing_create(void) |
| 199 | { |
| 200 | return lttng_condition_session_rotation_create( |
| 201 | LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING); |
| 202 | } |
| 203 | |
| 204 | struct lttng_condition *lttng_condition_session_rotation_completed_create(void) |
| 205 | { |
| 206 | return lttng_condition_session_rotation_create( |
| 207 | LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED); |
| 208 | } |
| 209 | |
| 210 | static |
| 211 | ssize_t init_condition_from_payload(struct lttng_condition *condition, |
| 212 | struct lttng_payload_view *src_view) |
| 213 | { |
| 214 | ssize_t ret, condition_size; |
| 215 | enum lttng_condition_status status; |
| 216 | const char *session_name; |
| 217 | struct lttng_buffer_view name_view; |
| 218 | const struct lttng_condition_session_rotation_comm *condition_comm; |
| 219 | struct lttng_payload_view condition_comm_view = |
| 220 | lttng_payload_view_from_view( |
| 221 | src_view, 0, sizeof(*condition_comm)); |
| 222 | |
| 223 | if (!lttng_payload_view_is_valid(&condition_comm_view)) { |
| 224 | ERR("Failed to initialize from malformed condition buffer: buffer too short to contain header"); |
| 225 | ret = -1; |
| 226 | goto end; |
| 227 | } |
| 228 | |
| 229 | condition_comm = (typeof(condition_comm)) src_view->buffer.data; |
| 230 | name_view = lttng_buffer_view_from_view(&src_view->buffer, |
| 231 | sizeof(*condition_comm), condition_comm->session_name_len); |
| 232 | |
| 233 | if (!lttng_buffer_view_is_valid(&name_view)) { |
| 234 | ERR("Failed to initialize from malformed condition buffer: buffer too short to contain session name"); |
| 235 | ret = -1; |
| 236 | goto end; |
| 237 | } |
| 238 | |
| 239 | if (condition_comm->session_name_len > LTTNG_NAME_MAX) { |
| 240 | ERR("Failed to initialize from malformed condition buffer: name exceeds LTTNG_MAX_NAME"); |
| 241 | ret = -1; |
| 242 | goto end; |
| 243 | } |
| 244 | |
| 245 | session_name = name_view.data; |
| 246 | if (*(session_name + condition_comm->session_name_len - 1) != '\0') { |
| 247 | ERR("Malformed session name encountered in condition buffer"); |
| 248 | ret = -1; |
| 249 | goto end; |
| 250 | } |
| 251 | |
| 252 | status = lttng_condition_session_rotation_set_session_name(condition, |
| 253 | session_name); |
| 254 | if (status != LTTNG_CONDITION_STATUS_OK) { |
| 255 | ERR("Failed to set buffer consumed session name"); |
| 256 | ret = -1; |
| 257 | goto end; |
| 258 | } |
| 259 | |
| 260 | if (!lttng_condition_validate(condition)) { |
| 261 | ret = -1; |
| 262 | goto end; |
| 263 | } |
| 264 | |
| 265 | condition_size = sizeof(*condition_comm) + |
| 266 | (ssize_t) condition_comm->session_name_len; |
| 267 | ret = condition_size; |
| 268 | end: |
| 269 | return ret; |
| 270 | } |
| 271 | |
| 272 | static |
| 273 | ssize_t lttng_condition_session_rotation_create_from_payload( |
| 274 | struct lttng_payload_view *view, |
| 275 | struct lttng_condition **_condition, |
| 276 | enum lttng_condition_type type) |
| 277 | { |
| 278 | ssize_t ret; |
| 279 | struct lttng_condition *condition = NULL; |
| 280 | |
| 281 | switch (type) { |
| 282 | case LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING: |
| 283 | condition = lttng_condition_session_rotation_ongoing_create(); |
| 284 | break; |
| 285 | case LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED: |
| 286 | condition = lttng_condition_session_rotation_completed_create(); |
| 287 | break; |
| 288 | default: |
| 289 | ret = -1; |
| 290 | goto error; |
| 291 | } |
| 292 | |
| 293 | if (!_condition || !condition) { |
| 294 | ret = -1; |
| 295 | goto error; |
| 296 | } |
| 297 | |
| 298 | ret = init_condition_from_payload(condition, view); |
| 299 | if (ret < 0) { |
| 300 | goto error; |
| 301 | } |
| 302 | |
| 303 | *_condition = condition; |
| 304 | return ret; |
| 305 | error: |
| 306 | lttng_condition_destroy(condition); |
| 307 | return ret; |
| 308 | } |
| 309 | |
| 310 | LTTNG_HIDDEN |
| 311 | ssize_t lttng_condition_session_rotation_ongoing_create_from_payload( |
| 312 | struct lttng_payload_view *view, |
| 313 | struct lttng_condition **condition) |
| 314 | { |
| 315 | return lttng_condition_session_rotation_create_from_payload(view, |
| 316 | condition, |
| 317 | LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING); |
| 318 | } |
| 319 | |
| 320 | LTTNG_HIDDEN |
| 321 | ssize_t lttng_condition_session_rotation_completed_create_from_payload( |
| 322 | struct lttng_payload_view *view, |
| 323 | struct lttng_condition **condition) |
| 324 | { |
| 325 | return lttng_condition_session_rotation_create_from_payload(view, |
| 326 | condition, |
| 327 | LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED); |
| 328 | } |
| 329 | |
| 330 | static |
| 331 | struct lttng_evaluation *lttng_evaluation_session_rotation_create( |
| 332 | enum lttng_condition_type type, uint64_t id, |
| 333 | struct lttng_trace_archive_location *location) |
| 334 | { |
| 335 | struct lttng_evaluation_session_rotation *evaluation; |
| 336 | |
| 337 | evaluation = zmalloc(sizeof(struct lttng_evaluation_session_rotation)); |
| 338 | if (!evaluation) { |
| 339 | return NULL; |
| 340 | } |
| 341 | |
| 342 | memcpy(&evaluation->parent, &rotation_evaluation_template, |
| 343 | sizeof(evaluation->parent)); |
| 344 | lttng_evaluation_init(&evaluation->parent, type); |
| 345 | evaluation->id = id; |
| 346 | if (location) { |
| 347 | lttng_trace_archive_location_get(location); |
| 348 | } |
| 349 | evaluation->location = location; |
| 350 | return &evaluation->parent; |
| 351 | } |
| 352 | |
| 353 | static |
| 354 | ssize_t create_evaluation_from_payload( |
| 355 | enum lttng_condition_type type, |
| 356 | struct lttng_payload_view *view, |
| 357 | struct lttng_evaluation **_evaluation) |
| 358 | { |
| 359 | ssize_t ret, size; |
| 360 | struct lttng_evaluation *evaluation = NULL; |
| 361 | struct lttng_trace_archive_location *location = NULL; |
| 362 | const struct lttng_evaluation_session_rotation_comm *comm; |
| 363 | struct lttng_payload_view comm_view = lttng_payload_view_from_view( |
| 364 | view, 0, sizeof(*comm)); |
| 365 | |
| 366 | if (!lttng_payload_view_is_valid(&comm_view)) { |
| 367 | goto error; |
| 368 | } |
| 369 | |
| 370 | comm = (typeof(comm)) comm_view.buffer.data; |
| 371 | size = sizeof(*comm); |
| 372 | if (comm->has_location) { |
| 373 | const struct lttng_buffer_view location_view = |
| 374 | lttng_buffer_view_from_view( |
| 375 | &view->buffer, sizeof(*comm), -1); |
| 376 | |
| 377 | if (!lttng_buffer_view_is_valid(&location_view)) { |
| 378 | goto error; |
| 379 | } |
| 380 | |
| 381 | ret = lttng_trace_archive_location_create_from_buffer( |
| 382 | &location_view, &location); |
| 383 | if (ret < 0) { |
| 384 | goto error; |
| 385 | } |
| 386 | size += ret; |
| 387 | } |
| 388 | |
| 389 | evaluation = lttng_evaluation_session_rotation_create(type, comm->id, |
| 390 | location); |
| 391 | if (!evaluation) { |
| 392 | goto error; |
| 393 | } |
| 394 | |
| 395 | lttng_trace_archive_location_put(location); |
| 396 | ret = size; |
| 397 | *_evaluation = evaluation; |
| 398 | return ret; |
| 399 | error: |
| 400 | lttng_trace_archive_location_put(location); |
| 401 | evaluation = NULL; |
| 402 | return -1; |
| 403 | } |
| 404 | |
| 405 | static |
| 406 | ssize_t lttng_evaluation_session_rotation_create_from_payload( |
| 407 | enum lttng_condition_type type, |
| 408 | struct lttng_payload_view *view, |
| 409 | struct lttng_evaluation **_evaluation) |
| 410 | { |
| 411 | ssize_t ret; |
| 412 | struct lttng_evaluation *evaluation = NULL; |
| 413 | |
| 414 | if (!_evaluation) { |
| 415 | ret = -1; |
| 416 | goto error; |
| 417 | } |
| 418 | |
| 419 | ret = create_evaluation_from_payload(type, view, &evaluation); |
| 420 | if (ret < 0) { |
| 421 | goto error; |
| 422 | } |
| 423 | |
| 424 | *_evaluation = evaluation; |
| 425 | return ret; |
| 426 | error: |
| 427 | lttng_evaluation_destroy(evaluation); |
| 428 | return ret; |
| 429 | } |
| 430 | |
| 431 | LTTNG_HIDDEN |
| 432 | ssize_t lttng_evaluation_session_rotation_ongoing_create_from_payload( |
| 433 | struct lttng_payload_view *view, |
| 434 | struct lttng_evaluation **evaluation) |
| 435 | { |
| 436 | return lttng_evaluation_session_rotation_create_from_payload( |
| 437 | LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING, |
| 438 | view, evaluation); |
| 439 | } |
| 440 | |
| 441 | LTTNG_HIDDEN |
| 442 | ssize_t lttng_evaluation_session_rotation_completed_create_from_payload( |
| 443 | struct lttng_payload_view *view, |
| 444 | struct lttng_evaluation **evaluation) |
| 445 | { |
| 446 | return lttng_evaluation_session_rotation_create_from_payload( |
| 447 | LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED, |
| 448 | view, evaluation); |
| 449 | } |
| 450 | |
| 451 | LTTNG_HIDDEN |
| 452 | struct lttng_evaluation *lttng_evaluation_session_rotation_ongoing_create( |
| 453 | uint64_t id) |
| 454 | { |
| 455 | return lttng_evaluation_session_rotation_create( |
| 456 | LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING, id, |
| 457 | NULL); |
| 458 | } |
| 459 | |
| 460 | LTTNG_HIDDEN |
| 461 | struct lttng_evaluation *lttng_evaluation_session_rotation_completed_create( |
| 462 | uint64_t id, struct lttng_trace_archive_location *location) |
| 463 | { |
| 464 | return lttng_evaluation_session_rotation_create( |
| 465 | LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED, id, |
| 466 | location); |
| 467 | } |
| 468 | |
| 469 | enum lttng_condition_status |
| 470 | lttng_condition_session_rotation_get_session_name( |
| 471 | const struct lttng_condition *condition, |
| 472 | const char **session_name) |
| 473 | { |
| 474 | struct lttng_condition_session_rotation *rotation; |
| 475 | enum lttng_condition_status status = LTTNG_CONDITION_STATUS_OK; |
| 476 | |
| 477 | if (!condition || !is_rotation_condition(condition) || !session_name) { |
| 478 | status = LTTNG_CONDITION_STATUS_INVALID; |
| 479 | goto end; |
| 480 | } |
| 481 | |
| 482 | rotation = container_of(condition, struct lttng_condition_session_rotation, |
| 483 | parent); |
| 484 | if (!rotation->session_name) { |
| 485 | status = LTTNG_CONDITION_STATUS_UNSET; |
| 486 | goto end; |
| 487 | } |
| 488 | *session_name = rotation->session_name; |
| 489 | end: |
| 490 | return status; |
| 491 | } |
| 492 | |
| 493 | enum lttng_condition_status |
| 494 | lttng_condition_session_rotation_set_session_name( |
| 495 | struct lttng_condition *condition, const char *session_name) |
| 496 | { |
| 497 | char *session_name_copy; |
| 498 | struct lttng_condition_session_rotation *rotation; |
| 499 | enum lttng_condition_status status = LTTNG_CONDITION_STATUS_OK; |
| 500 | |
| 501 | if (!condition || !is_rotation_condition(condition) || |
| 502 | !session_name || strlen(session_name) == 0) { |
| 503 | status = LTTNG_CONDITION_STATUS_INVALID; |
| 504 | goto end; |
| 505 | } |
| 506 | |
| 507 | rotation = container_of(condition, |
| 508 | struct lttng_condition_session_rotation, parent); |
| 509 | session_name_copy = strdup(session_name); |
| 510 | if (!session_name_copy) { |
| 511 | status = LTTNG_CONDITION_STATUS_ERROR; |
| 512 | goto end; |
| 513 | } |
| 514 | |
| 515 | free(rotation->session_name); |
| 516 | rotation->session_name = session_name_copy; |
| 517 | end: |
| 518 | return status; |
| 519 | } |
| 520 | |
| 521 | static |
| 522 | int lttng_evaluation_session_rotation_serialize( |
| 523 | const struct lttng_evaluation *evaluation, |
| 524 | struct lttng_payload *payload) |
| 525 | { |
| 526 | int ret; |
| 527 | struct lttng_evaluation_session_rotation *rotation; |
| 528 | struct lttng_evaluation_session_rotation_comm comm = { 0 }; |
| 529 | |
| 530 | rotation = container_of(evaluation, |
| 531 | struct lttng_evaluation_session_rotation, parent); |
| 532 | comm.id = rotation->id; |
| 533 | comm.has_location = !!rotation->location; |
| 534 | ret = lttng_dynamic_buffer_append( |
| 535 | &payload->buffer, &comm, sizeof(comm)); |
| 536 | if (ret) { |
| 537 | goto end; |
| 538 | } |
| 539 | if (!rotation->location) { |
| 540 | goto end; |
| 541 | } |
| 542 | ret = lttng_trace_archive_location_serialize(rotation->location, |
| 543 | &payload->buffer); |
| 544 | end: |
| 545 | return ret; |
| 546 | } |
| 547 | |
| 548 | static |
| 549 | void lttng_evaluation_session_rotation_destroy( |
| 550 | struct lttng_evaluation *evaluation) |
| 551 | { |
| 552 | struct lttng_evaluation_session_rotation *rotation; |
| 553 | |
| 554 | rotation = container_of(evaluation, |
| 555 | struct lttng_evaluation_session_rotation, parent); |
| 556 | lttng_trace_archive_location_put(rotation->location); |
| 557 | free(rotation); |
| 558 | } |
| 559 | |
| 560 | enum lttng_evaluation_status |
| 561 | lttng_evaluation_session_rotation_get_id( |
| 562 | const struct lttng_evaluation *evaluation, uint64_t *id) |
| 563 | { |
| 564 | const struct lttng_evaluation_session_rotation *rotation; |
| 565 | enum lttng_evaluation_status status = LTTNG_EVALUATION_STATUS_OK; |
| 566 | |
| 567 | if (!evaluation || !id || !is_rotation_evaluation(evaluation)) { |
| 568 | status = LTTNG_EVALUATION_STATUS_INVALID; |
| 569 | goto end; |
| 570 | } |
| 571 | |
| 572 | rotation = container_of(evaluation, |
| 573 | struct lttng_evaluation_session_rotation, parent); |
| 574 | *id = rotation->id; |
| 575 | end: |
| 576 | return status; |
| 577 | } |
| 578 | |
| 579 | /* |
| 580 | * The public API assumes that trace archive locations are always provided as |
| 581 | * "constant". This means that the user of liblttng-ctl never has to destroy a |
| 582 | * trace archive location. Hence, users of liblttng-ctl have no visibility of |
| 583 | * the reference counting of archive locations. |
| 584 | */ |
| 585 | enum lttng_evaluation_status |
| 586 | lttng_evaluation_session_rotation_completed_get_location( |
| 587 | const struct lttng_evaluation *evaluation, |
| 588 | const struct lttng_trace_archive_location **location) |
| 589 | { |
| 590 | const struct lttng_evaluation_session_rotation *rotation; |
| 591 | enum lttng_evaluation_status status = LTTNG_EVALUATION_STATUS_OK; |
| 592 | |
| 593 | if (!evaluation || !location || |
| 594 | evaluation->type != LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED) { |
| 595 | status = LTTNG_EVALUATION_STATUS_INVALID; |
| 596 | goto end; |
| 597 | } |
| 598 | |
| 599 | rotation = container_of(evaluation, |
| 600 | struct lttng_evaluation_session_rotation, parent); |
| 601 | *location = rotation->location; |
| 602 | end: |
| 603 | return status; |
| 604 | } |
| 605 | |
| 606 | static |
| 607 | enum lttng_error_code lttng_condition_session_rotation_mi_serialize( |
| 608 | const struct lttng_condition *condition, |
| 609 | struct mi_writer *writer) |
| 610 | { |
| 611 | int ret; |
| 612 | enum lttng_error_code ret_code; |
| 613 | enum lttng_condition_status status; |
| 614 | const char *session_name = NULL; |
| 615 | const char *type_element_str = NULL; |
| 616 | |
| 617 | LTTNG_ASSERT(condition); |
| 618 | LTTNG_ASSERT(writer); |
| 619 | LTTNG_ASSERT(is_rotation_condition(condition)); |
| 620 | |
| 621 | switch (lttng_condition_get_type(condition)) { |
| 622 | case LTTNG_CONDITION_TYPE_SESSION_ROTATION_COMPLETED: |
| 623 | type_element_str = |
| 624 | mi_lttng_element_condition_session_rotation_completed; |
| 625 | break; |
| 626 | case LTTNG_CONDITION_TYPE_SESSION_ROTATION_ONGOING: |
| 627 | type_element_str = |
| 628 | mi_lttng_element_condition_session_rotation_ongoing; |
| 629 | break; |
| 630 | default: |
| 631 | abort(); |
| 632 | break; |
| 633 | } |
| 634 | |
| 635 | status = lttng_condition_session_rotation_get_session_name( |
| 636 | condition, &session_name); |
| 637 | LTTNG_ASSERT(status == LTTNG_CONDITION_STATUS_OK); |
| 638 | LTTNG_ASSERT(session_name); |
| 639 | |
| 640 | /* Open condition session rotation_* element. */ |
| 641 | ret = mi_lttng_writer_open_element(writer, type_element_str); |
| 642 | if (ret) { |
| 643 | goto mi_error; |
| 644 | } |
| 645 | |
| 646 | /* Session name. */ |
| 647 | ret = mi_lttng_writer_write_element_string( |
| 648 | writer, mi_lttng_element_session_name, session_name); |
| 649 | if (ret) { |
| 650 | goto mi_error; |
| 651 | } |
| 652 | |
| 653 | /* Close condition session rotation element. */ |
| 654 | ret = mi_lttng_writer_close_element(writer); |
| 655 | if (ret) { |
| 656 | goto mi_error; |
| 657 | } |
| 658 | |
| 659 | ret_code = LTTNG_OK; |
| 660 | goto end; |
| 661 | |
| 662 | mi_error: |
| 663 | ret_code = LTTNG_ERR_MI_IO_FAIL; |
| 664 | end: |
| 665 | return ret_code; |
| 666 | } |