zpool_find_config
error = zpool_find_config(NULL, target_pool, &cfg, &args,
error = zpool_find_config(NULL, target, &config, &g_importargs,
error = zpool_find_config(NULL, name, &cfg, &args,
extern int zpool_find_config(void *, const char *, nvlist_t **, importargs_t *,