Function ztest_lookup

freebsd/contrib/openzfs/cmd/ztest/ztest.c:2386–2426

* Lookup a bunch of objects. Returns the number of objects not found. */

 * Lookup a bunch of objects.  Returns the number of objects not found.
 */
static int
ztest_lookup(ztest_ds_t *zd, ztest_od_t *od, int count)
{
	int missing = 0;
	int error;
	int i;

	ASSERT(MUTEX_HELD(&zd->zd_dirobj_lock));

	for (i = 0; i < count; i++, od++) {
		od->od_object = 0;
		error = zap_lookup(zd->zd_os, od->od_dir, od->od_name,
		    sizeof (uint64_t), 1, &od->od_object);
		if (error) {
			ASSERT(error == ENOENT);
			ASSERT(od->od_object == 0);
			missing++;
		} else {
			dmu_buf_t *db;
			ztest_block_tag_t *bbt;
			dmu_object_info_t doi;

			ASSERT(od->od_object != 0);
			ASSERT(missing == 0);	/* there should be no gaps */

			ztest_object_lock(zd, od->od_object, RL_READER);
			VERIFY3U(0, ==, dmu_bonus_hold(zd->zd_os,
			    od->od_object, FTAG, &db));
			dmu_object_info_from_db(db, &doi);
			bbt = ztest_bt_bonus(db);
			ASSERT3U(bbt->bt_magic, ==, BT_MAGIC);
			od->od_type = doi.doi_type;
			od->od_blocksize = doi.doi_data_block_size;
			od->od_gen = bbt->bt_gen;
			dmu_buf_rele(db, FTAG);
			ztest_object_unlock(zd, od->od_object);
		}
	}

	return (missing);
}

static int
ztest_create(ztest_ds_t *zd, ztest_od_t *od, int count)