Function cloneuio

freebsd/kern/subr_uio.c:400–412

}

struct uio *
cloneuio(struct uio *uiop)
{
	struct uio *uio;
	int iovlen;

	iovlen = uiop->uio_iovcnt * sizeof (struct iovec);
	uio = malloc(iovlen + sizeof *uio, M_IOV, M_WAITOK);
	*uio = *uiop;
	uio->uio_iov = (struct iovec *)(uio + 1);
	bcopy(uiop->uio_iov, uio->uio_iov, iovlen);
	return (uio);
}

/*
 * Map some anonymous memory in user space of size sz, rounded up to the page