uiocopy
if (error = uiocopy(abuf->b_data, max_blksz,
if ((error = uiocopy((caddr_t)pollfdp, uiosize, UIO_WRITE, uiop,
if (uiocopy(slot->cs_io.ci_ibuf, len, UIO_WRITE, uiop, &cbytes) != 0) {
int uiocopy(void *, size_t, enum uio_rw, uio_t *, size_t *);