filedisk XML configuration language tweak

[palacios.git] / palacios / src / devices / vnet_nic.c

diff --git a/palacios/src/devices/vnet_nic.c b/palacios/src/devices/vnet_nic.c
index d66384d..375a974 100644 (file)
--- a/palacios/src/devices/vnet_nic.c
+++ b/palacios/src/devices/vnet_nic.c
@@ -111,7 +111,18 @@ static int vnet_nic_init(struct v3_vm_info * vm, v3_cfg_tree_t * cfg) {
 
     v3_cfg_tree_t * frontend_cfg = v3_cfg_subtree(cfg, "frontend");
 
+    if (!frontend_cfg || !(v3_cfg_val(frontend_cfg, "tag"))) { 
+       PrintError("No frontend config specified, or frontend has no tag\n");
+       return -1;
+    }
+
     vnetnic = (struct vnet_nic_state *)V3_Malloc(sizeof(struct vnet_nic_state));
+
+    if (!vnetnic) {
+       PrintError("Cannot allocate in init\n");
+       return -1;
+    }
+
     memset(vnetnic, 0, sizeof(struct vnet_nic_state));
 
     struct vm_device * dev = v3_add_device(vm, dev_id, &dev_ops, vnetnic);