FlexRAN control delegation: write/remove depending if payload present

openair2/ENB_APP/flexran_agent_common.c

@@ -434,10 +434,11 @@ int flexran_agent_control_delegation(mid_t mod_id, const void *params, Protocol_
                      RC.flexran[mod_id]->cache_name,
                      control_delegation_msg->name);
   if (len >= sizeof(target)) {
-    LOG_E(FLEXRAN_AGENT, "target has been truncated, cannot write file\n");
+    LOG_E(FLEXRAN_AGENT, "target has been truncated, cannot write file name\n");
     return 0;
   }
 
+  if (control_delegation_msg->has_payload) {
     /* use low-level API: check whether exists while creating so we can abort if
      * it exists to not overwrite anything */
     int fd = open(target, O_CREAT | O_WRONLY | O_EXCL, S_IRUSR | S_IWUSR);
@@ -469,6 +470,12 @@ int flexran_agent_control_delegation(mid_t mod_id, const void *params, Protocol_
         return 0;
       }
     }
+  } else {
+    LOG_W(FLEXRAN_AGENT, "remove file %s\n", target);
+    int rc = remove(target);
+    if (rc < 0)
+      LOG_E(FLEXRAN_AGENT, "cannot remove file %s: %s\n", target, strerror(errno));
+  }
 
   return 0;
 }