Function ng_generic_msg

freebsd/netgraph/ng_base.c:2508–2946

* Implement the 'generic' control messages ***********************************************************************/

 * Implement the 'generic' control messages
 ***********************************************************************/
static int
ng_generic_msg(node_p here, item_p item, hook_p lasthook)
{
	int error = 0;
	struct ng_mesg *msg;
	struct ng_mesg *resp = NULL;

	NGI_GET_MSG(item, msg);
	if (msg->header.typecookie != NGM_GENERIC_COOKIE) {
		TRAP_ERROR();
		error = EINVAL;
		goto out;
	}
	switch (msg->header.cmd) {
	case NGM_SHUTDOWN:
		ng_rmnode(here, NULL, NULL, 0);
		break;
	case NGM_MKPEER:
	    {
		struct ngm_mkpeer *const mkp = (struct ngm_mkpeer *) msg->data;

		if (msg->header.arglen != sizeof(*mkp)) {
			TRAP_ERROR();
			error = EINVAL;
			break;
		}
		mkp->type[sizeof(mkp->type) - 1] = '\0';
		mkp->ourhook[sizeof(mkp->ourhook) - 1] = '\0';
		mkp->peerhook[sizeof(mkp->peerhook) - 1] = '\0';
		error = ng_mkpeer(here, mkp->ourhook, mkp->peerhook, mkp->type);
		break;
	    }
	case NGM_CONNECT:
	    {
		struct ngm_connect *const con =
			(struct ngm_connect *) msg->data;
		node_p node2;

		if (msg->header.arglen != sizeof(*con)) {
			TRAP_ERROR();
			error = EINVAL;
			break;
		}
		con->path[sizeof(con->path) - 1] = '\0';
		con->ourhook[sizeof(con->ourhook) - 1] = '\0';
		con->peerhook[sizeof(con->peerhook) - 1] = '\0';
		/* Don't forget we get a reference.. */
		error = ng_path2noderef(here, con->path, &node2, NULL);
		if (error)
			break;
		error = ng_con_nodes(item, here, con->ourhook,
		    node2, con->peerhook);
		NG_NODE_UNREF(node2);
		break;
	    }
	case NGM_NAME:
	    {
		struct ngm_name *const nam = (struct ngm_name *) msg->data;