old_mask          620 lib/services/services_linux.c     sigset_t old_mask;
old_mask          622 lib/services/services_linux.c     if (sigismember(&old_mask, SIGCHLD) == 0) {                               \
old_mask          683 lib/services/services_linux.c         sigemptyset(&old_mask);
old_mask          685 lib/services/services_linux.c         if (sigprocmask(SIG_BLOCK, &mask, &old_mask) < 0) {