Exemple #1
0
static int ioctl_private_call(struct net_device *dev, struct iwreq *iwr,
			      unsigned int cmd, struct iw_request_info *info,
			      iw_handler handler)
{
	int extra_size = 0, ret = -EINVAL;
	const struct iw_priv_args *descr;

	extra_size = get_priv_descr_and_size(dev, cmd, &descr);

	/* Check if we have a pointer to user space data or not. */
	if (extra_size == 0) {
		/* No extra arguments. Trivial to handle */
		ret = handler(dev, info, &(iwr->u), (char *) &(iwr->u));
	} else {
		ret = ioctl_private_iw_point(&iwr->u.data, cmd, descr,
					     handler, dev, info, extra_size);
	}

	/* Call commit handler if needed and defined */
	if (ret == -EIWCOMMIT)
		ret = call_commit_handler(dev);

	return ret;
}
int compat_private_call(struct net_device *dev, struct iwreq *iwr,
			unsigned int cmd, struct iw_request_info *info,
			iw_handler handler)
{
	const struct iw_priv_args *descr;
	int ret, extra_size;

	extra_size = get_priv_descr_and_size(dev, cmd, &descr);

	/* Check if we have a pointer to user space data or not. */
	if (extra_size == 0) {
		/* No extra arguments. Trivial to handle */
		ret = handler(dev, info, &(iwr->u), (char *) &(iwr->u));
	} else {
		struct compat_iw_point *iwp_compat;
		struct iw_point iwp;

		iwp_compat = (struct compat_iw_point *) &iwr->u.data;
		iwp.pointer = compat_ptr(iwp_compat->pointer);
		iwp.length = iwp_compat->length;
		iwp.flags = iwp_compat->flags;

		ret = ioctl_private_iw_point(&iwp, cmd, descr,
					     handler, dev, info, extra_size);

		iwp_compat->pointer = ptr_to_compat(iwp.pointer);
		iwp_compat->length = iwp.length;
		iwp_compat->flags = iwp.flags;
	}

	/* Call commit handler if needed and defined */
	if (ret == -EIWCOMMIT)
		ret = call_commit_handler(dev);

	return ret;
}