Function ng_con_part3

lib/ff_ng_base.c:1346–1387

Composite routines ************************************************************************/ * Connect two nodes using the specified hooks, using queued functions. */

 * Connect two nodes using the specified hooks, using queued functions.
 */
static int
ng_con_part3(node_p node, item_p item, hook_p hook)
{
    int    error = 0;

    /*
     * When we run, we know that the node 'node' is locked for us.
     * Our caller has a reference on the hook.
     * Our caller has a reference on the node.
     * (In this case our caller is ng_apply_item() ).
     * The peer hook has a reference on the hook.
     * We are all set up except for the final call to the node, and
     * the clearing of the INVALID flag.
     */
    if (NG_HOOK_NODE(hook) == &ng_deadnode) {
        /*
         * The node must have been freed again since we last visited
         * here. ng_destry_hook() has this effect but nothing else does.
         * We should just release our references and
         * free anything we can think of.
         * Since we know it's been destroyed, and it's our caller
         * that holds the references, just return.
         */
        ERROUT(ENOENT);
    }
    if (hook->hk_node->nd_type->connect) {
        if ((error = (*hook->hk_node->nd_type->connect) (hook))) {
            ng_destroy_hook(hook);    /* also zaps peer */
            printf("failed in ng_con_part3()\n");
            ERROUT(error);
        }
    }
    /*
     *  XXX this is wrong for SMP. Possibly we need
     * to separate out 'create' and 'invalid' flags.
     * should only set flags on hooks we have locked under our node.
     */
    hook->hk_flags &= ~HK_INVALID;
done:
    NG_FREE_ITEM(item);
    return (error);
}

static int
ng_con_part2(node_p node, item_p item, hook_p hook)