+ retval = fcntl(pipefds[0], F_SETFL, O_NONBLOCK);
+ if (retval < 0) {
+ dbg("error fcntl on read pipe: %s", strerror(errno));
+ exit(1);
+ }
+ retval = fcntl(pipefds[0], F_SETFD, FD_CLOEXEC);
+ if (retval < 0) {
+ dbg("error fcntl on read pipe: %s", strerror(errno));
+ exit(1);
+ }
+
+ retval = fcntl(pipefds[1], F_SETFL, O_NONBLOCK);
+ if (retval < 0) {
+ dbg("error fcntl on write pipe: %s", strerror(errno));
+ exit(1);
+ }
+ retval = fcntl(pipefds[1], F_SETFD, FD_CLOEXEC);
+ if (retval < 0) {
+ dbg("error fcntl on write pipe: %s", strerror(errno));
+ exit(1);
+ }
+
+
+ /* set signal handlers */
+ act.sa_handler = (void (*) (int))sig_handler;
+ sigemptyset(&act.sa_mask);
+ act.sa_flags = SA_RESTART;
+ sigaction(SIGINT, &act, NULL);
+ sigaction(SIGTERM, &act, NULL);
+ sigaction(SIGALRM, &act, NULL);
+ sigaction(SIGCHLD, &act, NULL);