static int __vsock_core_init(void)
{
int err;
vsock_init_tables();
err = misc_register(&vsock_device);
if (err) {
pr_err("Failed to register misc device\n");
return -ENOENT;
}
err = proto_register(&vsock_proto, 1); /* we want our slab */
if (err) {
pr_err("Cannot register vsock protocol\n");
goto err_misc_deregister;
}
err = sock_register(&vsock_family_ops);
if (err) {
pr_err("could not register af_vsock (%d) address family: %d\n",
AF_VSOCK, err);
goto err_unregister_proto;
}
return 0;
err_unregister_proto:
proto_unregister(&vsock_proto);
err_misc_deregister:
misc_deregister(&vsock_device);
return err;
}
int __vsock_core_init(const struct vsock_transport *t, struct module *owner)
{
int err = mutex_lock_interruptible(&vsock_register_mutex);
if (err)
return err;
if (transport) {
err = -EBUSY;
goto err_busy;
}
/* Transport must be the owner of the protocol so that it can't
* unload while there are open sockets.
*/
vsock_proto.owner = owner;
transport = t;
vsock_init_tables();
vsock_device.minor = MISC_DYNAMIC_MINOR;
err = misc_register(&vsock_device);
if (err) {
pr_err("Failed to register misc device\n");
goto err_reset_transport;
}
err = proto_register(&vsock_proto, 1); /* we want our slab */
if (err) {
pr_err("Cannot register vsock protocol\n");
goto err_deregister_misc;
}
err = sock_register(&vsock_family_ops);
if (err) {
pr_err("could not register af_vsock (%d) address family: %d\n",
AF_VSOCK, err);
goto err_unregister_proto;
}
mutex_unlock(&vsock_register_mutex);
return 0;
err_unregister_proto:
proto_unregister(&vsock_proto);
err_deregister_misc:
misc_deregister(&vsock_device);
err_reset_transport:
transport = NULL;
err_busy:
mutex_unlock(&vsock_register_mutex);
return err;
}
