- dsl_dataset_t *ds = os->os_dsl_dataset;
- zap_cursor_t cursor;
- zap_attribute_t attr;
- int error;
-
- if (ds->ds_phys->ds_snapnames_zapobj == 0)
- return (ENOENT);
-
- zap_cursor_init(&cursor, ds->ds_dir->dd_pool->dp_meta_objset,
- ds->ds_phys->ds_snapnames_zapobj);
-
- error = zap_cursor_move_to_key(&cursor, snapname, MT_EXACT);
- if (error) {
- zap_cursor_fini(&cursor);
- return (error);
- }
-
- error = zap_cursor_retrieve(&cursor, &attr);
- if (error) {
- zap_cursor_fini(&cursor);
- return (error);
- }
-
- *idp = attr.za_first_integer;
- zap_cursor_fini(&cursor);
-
- return (0);