mkdirat_args
{ AS(mkdirat_args), 4, (sy_call_t *)sys_mkdirat }, /* 524 = mkdirat */
sys_mkdirat(struct sysmsg *sysmsg, const struct mkdirat_args *uap)
int sys_mkdirat (struct sysmsg *sysmsg, const struct mkdirat_args *);
struct mkdirat_args mkdirat;