+ /* Set fds to dev/null */
+ fd = open( "/dev/null", O_RDWR );
+ if ( fd < 0 ) {
+ dbg("error opening /dev/null %s", strerror(errno));
+ goto exit;
+ }
+ dup2(fd, 0);
+ dup2(fd, 1);
+ dup2(fd, 2);
+ if (fd > 2)
+ close(fd);
+
+ /* become session leader */
+ setsid();
+
+ /* setup signal handler pipe */
+ retval = pipe(pipefds);
+ if (retval < 0) {
+ dbg("error getting pipes: %s", strerror(errno));
+ goto exit;
+ }
+
+ retval = fcntl(pipefds[0], F_SETFL, O_NONBLOCK);
+ if (retval < 0) {
+ dbg("error fcntl on read pipe: %s", strerror(errno));
+ goto exit;
+ }
+ retval = fcntl(pipefds[0], F_SETFD, FD_CLOEXEC);
+ if (retval < 0) {
+ dbg("error fcntl on read pipe: %s", strerror(errno));
+ goto exit;
+ }
+
+ retval = fcntl(pipefds[1], F_SETFL, O_NONBLOCK);
+ if (retval < 0) {
+ dbg("error fcntl on write pipe: %s", strerror(errno));
+ goto exit;
+ }
+ retval = fcntl(pipefds[1], F_SETFD, FD_CLOEXEC);
+ if (retval < 0) {
+ dbg("error fcntl on write pipe: %s", strerror(errno));
+ goto exit;
+ }
+
+ /* 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);