static int snd_seq_ioctl_set_queue_info(struct snd_seq_client *client,
					void __user *arg)
{
	struct snd_seq_queue_info info;
	struct snd_seq_queue *q;

	if (copy_from_user(&info, arg, sizeof(info)))
		return -EFAULT;

	if (info.owner != client->number)
		return -EINVAL;

	/* change owner/locked permission */
	if (snd_seq_queue_check_access(info.queue, client->number)) {
		if (snd_seq_queue_set_owner(info.queue, client->number, info.locked) < 0)
			return -EPERM;
		if (info.locked)
			snd_seq_queue_use(info.queue, client->number, 1);
	} else {
		return -EPERM;
	}	

	q = queueptr(info.queue);
	if (! q)
		return -EINVAL;
	if (q->owner != client->number) {
		queuefree(q);
		return -EPERM;
	}
	strlcpy(q->name, info.name, sizeof(q->name));
	queuefree(q);

	return 0;
}

Unknown