4  * Authors :	Jean Tourrilhes - HPL - <[email protected]>
5  * Copyright (c) 1997-2007 Jean Tourrilhes, All Rights Reserved.
22 	if ((dev->wireless_handlers->num_private_args == 0) ||  in iw_handler_get_private()
23 	   (dev->wireless_handlers->private_args == NULL))  in iw_handler_get_private()
24 		return -EOPNOTSUPP;  in iw_handler_get_private()
27 	if (wrqu->data.length < dev->wireless_handlers->num_private_args) {  in iw_handler_get_private()
28 		/* User space can't know in advance how large the buffer  in iw_handler_get_private()
31 		wrqu->data.length = dev->wireless_handlers->num_private_args;  in iw_handler_get_private()
32 		return -E2BIG;  in iw_handler_get_private()
36 	wrqu->data.length = dev->wireless_handlers->num_private_args;  in iw_handler_get_private()
39 	memcpy(extra, dev->wireless_handlers->private_args,  in iw_handler_get_private()
40 	       sizeof(struct iw_priv_args) * wrqu->data.length);  in iw_handler_get_private()
67 	int	num = iwp->length;  in adjust_priv_size()
81  * user space and kernel space.
100 	for (i = 0; i < dev->wireless_handlers->num_private_args; i++) {  in get_priv_descr_and_size()
101 		if (cmd == dev->wireless_handlers->private_args[i].cmd) {  in get_priv_descr_and_size()
102 			descr = &dev->wireless_handlers->private_args[i];  in get_priv_descr_and_size()
110 			int	offset = 0;	/* For sub-ioctls */  in get_priv_descr_and_size()
111 			/* Check for sub-ioctl handler */  in get_priv_descr_and_size()
112 			if (descr->name[0] == '\0')  in get_priv_descr_and_size()
113 				/* Reserve one int for sub-ioctl index */  in get_priv_descr_and_size()
117 			extra_size = get_priv_size(descr->set_args);  in get_priv_descr_and_size()
120 			if ((descr->set_args & IW_PRIV_SIZE_FIXED) &&  in get_priv_descr_and_size()
125 			extra_size = get_priv_size(descr->get_args);  in get_priv_descr_and_size()
128 			if ((descr->get_args & IW_PRIV_SIZE_FIXED) &&  in get_priv_descr_and_size()
145 	/* Check what user space is giving us */  in ioctl_private_iw_point()
147 		if (!iwp->pointer && iwp->length != 0)  in ioctl_private_iw_point()
148 			return -EFAULT;  in ioctl_private_iw_point()
150 		if (iwp->length > (descr->set_args & IW_PRIV_SIZE_MASK))  in ioctl_private_iw_point()
151 			return -E2BIG;  in ioctl_private_iw_point()
152 	} else if (!iwp->pointer)  in ioctl_private_iw_point()
153 		return -EFAULT;  in ioctl_private_iw_point()
157 		return -ENOMEM;  in ioctl_private_iw_point()
160 	if (IW_IS_SET(cmd) && (iwp->length != 0)) {  in ioctl_private_iw_point()
161 		if (copy_from_user(extra, iwp->pointer, extra_size)) {  in ioctl_private_iw_point()
162 			err = -EFAULT;  in ioctl_private_iw_point()
175 		if (!(descr->get_args & IW_PRIV_SIZE_FIXED))  in ioctl_private_iw_point()
176 			extra_size = adjust_priv_size(descr->get_args, iwp);  in ioctl_private_iw_point()
178 		if (copy_to_user(iwp->pointer, extra, extra_size))  in ioctl_private_iw_point()
179 			err =  -EFAULT;  in ioctl_private_iw_point()
191 	int extra_size = 0, ret = -EINVAL;  in ioctl_private_call()
196 	/* Check if we have a pointer to user space data or not. */  in ioctl_private_call()
199 		ret = handler(dev, info, &(iwr->u), (char *) &(iwr->u));  in ioctl_private_call()
201 		ret = ioctl_private_iw_point(&iwr->u.data, cmd, descr,  in ioctl_private_call()
206 	if (ret == -EIWCOMMIT)  in ioctl_private_call()
222 	/* Check if we have a pointer to user space data or not. */  in compat_private_call()
225 		ret = handler(dev, info, &(iwr->u), (char *) &(iwr->u));  in compat_private_call()
230 		iwp_compat = (struct compat_iw_point *) &iwr->u.data;  in compat_private_call()
231 		iwp.pointer = compat_ptr(iwp_compat->pointer);  in compat_private_call()
232 		iwp.length = iwp_compat->length;  in compat_private_call()
233 		iwp.flags = iwp_compat->flags;  in compat_private_call()
238 		iwp_compat->pointer = ptr_to_compat(iwp.pointer);  in compat_private_call()
239 		iwp_compat->length = iwp.length;  in compat_private_call()
240 		iwp_compat->flags = iwp.flags;  in compat_private_call()
244 	if (ret == -EIWCOMMIT)  in compat_private_call()