udf_allocate_space
error = udf_allocate_space(ump, udf_node, udf_c_type,
error = udf_allocate_space(ump, NULL, UDF_C_NODE,
error = udf_allocate_space(ump, NULL, UDF_C_NODE,
int udf_allocate_space(struct udf_mount *ump, struct udf_node *udf_node, int udf_c_type, uint16_t vpart_num, uint32_t num_lb, uint64_t *lmapping);