obj: add set and namespace object callbacks

obj/namespace.c

@@ -1,17 +1,42 @@
 #include <socks/object.h>
 #include <socks/printk.h>
 
+static object_namespace_t *global_ns;
+
 struct object_namespace {
 	/* root directory set object */
 	object_t *ns_root;
 };
 
+static kern_status_t ns_query_name(object_t *obj, char out[OBJECT_NAME_MAX])
+{
+	out[0] = '/';
+	out[1] = 0;
+	return KERN_OK;
+}
+
+static kern_status_t ns_get_child_at(object_t *obj, size_t at, object_t **out)
+{
+	object_namespace_t *ns = object_data(obj);
+	return object_get_child_at(ns->ns_root, at, out);
+}
+
+static kern_status_t ns_get_child_named(object_t *obj, const char *name, object_t **out)
+{
+	object_namespace_t *ns = object_data(obj);
+	return object_get_child_named(ns->ns_root, name, out);
+}
+
 static object_type_t ns_type = {
 	.ob_name = "namespace",
 	.ob_size = sizeof(object_namespace_t),
+	.ob_ops = {
+		.query_name = ns_query_name,
+		.get_named = ns_get_child_named,
+		.get_at = ns_get_child_at,
+	},
 };
 
-static object_namespace_t *global_ns;
 
 void init_global_namespace(void)
 {
@@ -100,21 +125,30 @@ kern_status_t object_publish(object_namespace_t *ns, const char *path, object_t
 
 	unsigned long flags;
 	while (tok) {
-		set_lock(cur, &flags);
+		object_lock(cur, &flags);
 
-		object_t *next = object_get_child_named(cur, tok);
-		if (!next) {
+		object_t *next;
+		kern_status_t status = object_get_child_named(cur, tok, &next);
+		if (status == KERN_NO_ENTRY) {
 			next = set_create(tok);
 			if (!next) {
+				object_unlock(cur, flags);
 				kfree(rpath);
 				return KERN_NO_MEMORY;
 			}
 			
-			set_add_object(cur, next);
+			status = set_add_object(cur, next);
 		}
 
-		set_unlock(cur, flags);
+		if (status != KERN_OK) {
+			object_unlock(cur, flags);
+			kfree(rpath);
+			return status;
+		}
+
+		object_unlock(cur, flags);
 		cur = next;
+		tok = strtok_r(NULL, "/", &sp);
 	}
 
 	kfree(rpath);