exit(2) on unsupported positional arguments on command line

Change-Id: I4f2d70d0b0f1b7bdb8604c930aba8fbb53d8bd54

src/gbproxy/gb_proxy_main.c

@@ -196,6 +196,11 @@ static void handle_options(int argc, char **argv)
 			break;
 		}
 	}
+
+	if (argc > optind) {
+		fprintf(stderr, "Unsupported positional arguments on command line\n");
+		exit(2);
+	}
 }
 
 int gbproxy_vty_is_config_node(struct vty *vty, int node)

src/gtphub/gtphub_main.c

@@ -322,6 +322,11 @@ static void handle_options(struct cmdline_cfg *ccfg, int argc, char **argv)
 			break;
 		}
 	}
+
+	if (argc > optind) {
+		fprintf(stderr, "Unsupported positional arguments on command line\n");
+		exit(2);
+	}
 }
 
 int main(int argc, char **argv)

src/sgsn/sgsn_main.c

@@ -271,6 +271,11 @@ static void handle_options(int argc, char **argv)
 			break;
 		}
 	}
+
+	if (argc > optind) {
+		fprintf(stderr, "Unsupported positional arguments on command line\n");
+		exit(2);
+	}
 }
 
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