| 365 | } |
| 366 | |
| 367 | static int |
| 368 | load_zfeature(objset_t *mos, dsl_dataset_t *ds, spa_feature_t f) |
| 369 | { |
| 370 | int err = 0; |
| 371 | switch (spa_feature_table[f].fi_type) { |
| 372 | case ZFEATURE_TYPE_BOOLEAN: |
| 373 | err = zap_contains(mos, ds->ds_object, |
| 374 | spa_feature_table[f].fi_guid); |
| 375 | if (err == 0) { |
| 376 | ds->ds_feature[f] = (void *)B_TRUE; |
| 377 | } else { |
| 378 | ASSERT3U(err, ==, ENOENT); |
| 379 | err = 0; |
| 380 | } |
| 381 | break; |
| 382 | case ZFEATURE_TYPE_UINT64_ARRAY: |
| 383 | { |
| 384 | uint64_t int_size, num_int; |
| 385 | uint64_t *data; |
| 386 | err = zap_length(mos, ds->ds_object, |
| 387 | spa_feature_table[f].fi_guid, &int_size, &num_int); |
| 388 | if (err != 0) { |
| 389 | ASSERT3U(err, ==, ENOENT); |
| 390 | err = 0; |
| 391 | break; |
| 392 | } |
| 393 | ASSERT3U(int_size, ==, sizeof (uint64_t)); |
| 394 | data = kmem_alloc(int_size * num_int, KM_SLEEP); |
| 395 | VERIFY0(zap_lookup(mos, ds->ds_object, |
| 396 | spa_feature_table[f].fi_guid, int_size, num_int, data)); |
| 397 | struct feature_type_uint64_array_arg *ftuaa = |
| 398 | kmem_alloc(sizeof (*ftuaa), KM_SLEEP); |
| 399 | ftuaa->length = num_int; |
| 400 | ftuaa->array = data; |
| 401 | ds->ds_feature[f] = ftuaa; |
| 402 | break; |
| 403 | } |
| 404 | default: |
| 405 | panic("Invalid zfeature type %d", spa_feature_table[f].fi_type); |
| 406 | } |
| 407 | return (err); |
| 408 | } |
| 409 | |
| 410 | /* |
| 411 | * We have to release the fsid synchronously or we risk that a subsequent |
no test coverage detected