return errnoErr(errno)
}

func bytesPointer(b []byte) unsafe.Pointer {
	return unsafe.Pointer(unsafe.SliceData(b))
}

func stringPointer(s string) unsafe.Pointer {
	return unsafe.Pointer(unsafe.StringData(s))
}

func makeIOVec(b []byte) unsafe.Pointer {
	return unsafe.Pointer(&iovec{
		buf:    uintptr32(uintptr(bytesPointer(b))),
		bufLen: size(len(b)),
	})
}