+/* protects global variables ni and nc_file (getnetconfig.c) */
+pthread_mutex_t nc_db_lock = PTHREAD_MUTEX_INITIALIZER;
+
+/* protects static port and startport (bindresvport.c) */
+pthread_mutex_t port_lock = PTHREAD_MUTEX_INITIALIZER;
+
+/* protects static disrupt (clnt_vc.c) */
+pthread_mutex_t disrupt_lock = PTHREAD_MUTEX_INITIALIZER;
+