sa_setup
err = sa_setup(*osp, sa_attrs, zfs_attr_table, ZPL_END,
int sa_setup(objset_t *, uint64_t, sa_attr_reg_t *, int, sa_attr_type_t **);
error = sa_setup(os, sa_obj, zfs_attr_table, ZPL_END,
error = sa_setup(os, sa_obj, zfs_attr_table, ZPL_END,
error = sa_setup(osp, sa_obj, zfs_attr_table, ZPL_END, sa_table);