zfs_acl_node_read
err = zfs_acl_node_read(zp, B_FALSE, &aclp, B_FALSE);
int zfs_acl_node_read(struct znode *, boolean_t, zfs_acl_t **, boolean_t);
if ((error = zfs_acl_node_read(zp, B_TRUE, &aclp, B_FALSE)) == 0)
error = zfs_acl_node_read(zp, B_TRUE, aclp, B_TRUE);
VERIFY(0 == zfs_acl_node_read(dzp, B_TRUE,
error = zfs_acl_node_read(zp, B_FALSE, &aclp, B_FALSE);
error = zfs_acl_node_read(zp, B_FALSE, &aclp, B_FALSE);