On Fri, Jul 09, 2021 at 11:43:38AM +0000, Wei Liu wrote:
> +static long
> +mshv_partition_ioctl_create_device(struct mshv_partition *partition,
> + void __user *user_args)
> +{
[...]
> + mshv_partition_get(partition);
> + r = anon_inode_getfd(ops->name, &mshv_device_fops, dev, O_RDWR | O_CLOEXEC);
> + if (r < 0) {
> + mshv_partition_put_no_destroy(partition);
> + list_del(&dev->partition_node);
> + ops->destroy(dev);
> + goto out;
> + }
> +
> + cd->fd = r;
> + r = 0;
Why return the fd in memory instead of returning the fd as the return
value from the ioctl?
> + if (copy_to_user(user_args, &tmp, sizeof(tmp))) {
> + r = -EFAULT;
> + goto out;
> + }
... this could then disappear.
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