Function crypto_apply_buf

freebsd/opencrypto/criov.c:661–693

}

int
crypto_apply_buf(struct crypto_buffer *cb, int off, int len,
    int (*f)(void *, const void *, u_int), void *arg)
{
	int error;

	switch (cb->cb_type) {
	case CRYPTO_BUF_MBUF:
		error = m_apply(cb->cb_mbuf, off, len,
		    (int (*)(void *, void *, u_int))f, arg);
		break;
	case CRYPTO_BUF_UIO:
		error = cuio_apply(cb->cb_uio, off, len, f, arg);
		break;
#if CRYPTO_MAY_HAVE_VMPAGE
	case CRYPTO_BUF_VMPAGE:
		error = cvm_page_apply(cb->cb_vm_page,
		    off + cb->cb_vm_page_offset, len, f, arg);
		break;
#endif /* CRYPTO_MAY_HAVE_VMPAGE */
	case CRYPTO_BUF_CONTIG:
		MPASS(off + len <= cb->cb_buf_len);
		error = (*f)(arg, cb->cb_buf + off, len);
		break;
	default:
#ifdef INVARIANTS
		panic("invalid crypto buf type %d", cb->cb_type);
#endif
		error = 0;
		break;
	}
	return (error);
}

int
crypto_apply(struct cryptop *crp, int off, int len,