, uintptr(rgid), uintptr(egid), uintptr(sgid))  if e0 != 0 {   err = errnoErr(e0)  }  return }  // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT  func Setresuid(ruid int, euid int, suid int) (err error) {  _, _, e0 := RawSyscall(SYS_SETRESUID