#include <linux/workqueue.h>
#include <linux/rcupdate.h>
#include <linux/file.h>
+#include <linux/slab.h>
#include <linux/net.h>
#include <linux/if_packet.h>
int r;
switch (ioctl) {
case VHOST_NET_SET_BACKEND:
- r = copy_from_user(&backend, argp, sizeof backend);
- if (r < 0)
- return r;
+ if (copy_from_user(&backend, argp, sizeof backend))
+ return -EFAULT;
return vhost_net_set_backend(n, backend.index, backend.fd);
case VHOST_GET_FEATURES:
features = VHOST_FEATURES;
- return copy_to_user(featurep, &features, sizeof features);
+ if (copy_to_user(featurep, &features, sizeof features))
+ return -EFAULT;
+ return 0;
case VHOST_SET_FEATURES:
- r = copy_from_user(&features, featurep, sizeof features);
- if (r < 0)
- return r;
+ if (copy_from_user(&features, featurep, sizeof features))
+ return -EFAULT;
if (features & ~VHOST_FEATURES)
return -EOPNOTSUPP;
return vhost_net_set_features(n, features);
};
static struct miscdevice vhost_net_misc = {
- VHOST_NET_MINOR,
+ MISC_DYNAMIC_MINOR,
"vhost-net",
&vhost_net_fops,
};