+ do {
+ current_child = fork();
+
+ signal(SIGTERM, graceful_shutdown);
+
+ if (current_child < 0) {
+ perror("fork");
+ exit(errno);
+ }
+
+ else if (current_child == 0) {
+ return; /* continue starting citadel. */
+ }
+
+ else {
+ waitpid(current_child, &status, 0);
+ }
+
+ do_restart = 0;
+
+ /* Did the main process exit with an actual exit code? */
+ if (WIFEXITED(status)) {
+
+ /* Exit code 0 means the watcher should exit */
+ if (WEXITSTATUS(status) == 0) {
+ do_restart = 0;
+ }
+
+ /* Exit code 101-109 means the watcher should exit */
+ else if ( (WEXITSTATUS(status) >= 101) && (WEXITSTATUS(status) <= 109) ) {
+ do_restart = 0;
+ }
+
+ /* Any other exit code means we should restart. */
+ else {
+ do_restart = 1;
+ }
+ }
+
+ /* Any other type of termination (signals, etc.) should also restart. */
+ else {
+ do_restart = 1;
+ }
+
+ } while (do_restart);
+
+ unlink(pid_file);
+ exit(WEXITSTATUS(status));