network: use single helper to delete networks

src/lxc/network.c

@@ -2299,10 +2299,6 @@ bool lxc_delete_network_unpriv(struct lxc_handler *handler)
 	 * \0
 	 */
 	char netns_path[6 + LXC_NUMSTRLEN64 + 4 + LXC_NUMSTRLEN64 + 1];
-	bool deleted_all = true;
-
-	if (handler->am_root)
-		return true;
 
 	*netns_path = '\0';
 
@@ -2362,7 +2358,6 @@ bool lxc_delete_network_unpriv(struct lxc_handler *handler)
 						     handler->name, netdev,
 						     netns_path);
 		if (ret < 0) {
-			deleted_all = false;
 			WARN("Failed to remove port \"%s\" from openvswitch "
 			     "bridge \"%s\"", hostveth, netdev->link);
 			continue;
@@ -2371,7 +2366,7 @@ bool lxc_delete_network_unpriv(struct lxc_handler *handler)
 		     netdev->link);
 	}
 
-	return deleted_all;
+	return true;
 }
 
 int lxc_create_network_priv(struct lxc_handler *handler)
@@ -2479,10 +2474,6 @@ bool lxc_delete_network_priv(struct lxc_handler *handler)
 	int ret;
 	struct lxc_list *iterator;
 	struct lxc_list *network = &handler->conf->network;
-	bool deleted_all = true;
-
-	if (!handler->am_root)
-		return true;
 
 	lxc_list_for_each(iterator, network) {
 		char *hostveth = NULL;
@@ -2524,7 +2515,6 @@ bool lxc_delete_network_priv(struct lxc_handler *handler)
 					netdev->name[0] != '\0' ? netdev->name : "(null)",
 					netdev->ifindex);
 		} else if (ret < 0) {
-			deleted_all = false;
 			WARN("Failed to remove interface \"%s\" with "
 					"index %d: %s",
 					netdev->name[0] != '\0' ? netdev->name : "(null)",
@@ -2550,7 +2540,6 @@ bool lxc_delete_network_priv(struct lxc_handler *handler)
 
 		ret = lxc_netdev_delete_by_name(hostveth);
 		if (ret < 0) {
-			deleted_all = false;
 			WARN("Failed to remove interface \"%s\" from \"%s\": %s",
 			     hostveth, netdev->link, strerror(-ret));
 			continue;
@@ -2574,7 +2563,7 @@ bool lxc_delete_network_priv(struct lxc_handler *handler)
 		netdev->priv.veth_attr.veth1[0] = '\0';
 	}
 
-	return deleted_all;
+	return true;
 }
 
 int lxc_requests_empty_network(struct lxc_handler *handler)
@@ -3094,3 +3083,17 @@ int lxc_network_recv_name_and_ifindex_from_child(struct lxc_handler *handler)
 
 	return 0;
 }
+
+void lxc_delete_network(struct lxc_handler *handler)
+{
+	bool bret;
+
+	if (handler->am_root)
+		bret = lxc_delete_network_priv(handler);
+	else
+		bret = lxc_delete_network_unpriv(handler);
+	if (!bret)
+		DEBUG("Failed to delete network devices");
+	else
+		DEBUG("Deleted network devices");
+}

src/lxc/network.h

@@ -266,8 +266,7 @@ extern int lxc_network_move_created_netdev_priv(const char *lxcpath,
 						char *lxcname,
 						struct lxc_list *network,
 						pid_t pid);
-extern bool lxc_delete_network_priv(struct lxc_handler *handler);
-extern bool lxc_delete_network_unpriv(struct lxc_handler *handler);
+extern void lxc_delete_network(struct lxc_handler *handler);
 extern int lxc_find_gateway_addresses(struct lxc_handler *handler);
 extern int lxc_create_network_unpriv(const char *lxcpath, char *lxcname,
 				     struct lxc_list *network, pid_t pid);

src/lxc/start.c

@@ -1395,14 +1395,8 @@ out_delete_net:
 	if (cgroups_connected)
 		cgroup_disconnect();
 
-	if (handler->clone_flags & CLONE_NEWNET) {
-		DEBUG("Tearing down network devices");
-		if (!lxc_delete_network_priv(handler))
-			DEBUG("Failed tearing down network devices");
-
-		if (!lxc_delete_network_unpriv(handler))
-			DEBUG("Failed tearing down network devices");
-	}
+	if (handler->clone_flags & CLONE_NEWNET)
+		lxc_delete_network(handler);
 
 out_abort:
 	lxc_abort(name, handler);
@@ -1513,17 +1507,7 @@ int __lxc_start(const char *name, struct lxc_handler *handler,
 	err =  lxc_error_set_and_log(handler->pid, status);
 
 out_fini:
-	DEBUG("Tearing down network devices");
-	if (!lxc_delete_network_priv(handler))
-		DEBUG("Failed tearing down network devices");
-
-	if (!lxc_delete_network_unpriv(handler))
-		DEBUG("Failed tearing down network devices");
-
-	if (handler->netnsfd >= 0) {
-		close(handler->netnsfd);
-		handler->netnsfd = -1;
-	}
+	lxc_delete_network(handler);
 
 out_detach_blockdev:
 	detach_block_device(handler->conf);