--- lockf.c     Thu May  3 09:09:42 2007	
+++ lockf.c     Thu May  3 09:09:42 2007	
@@ -120,6 +120,11 @@ 
        signal(SIGINT, SIG_IGN);
        signal(SIGQUIT, SIG_IGN);
        signal(SIGTERM, killed);
+       fclose(stdin);
+       if (silent) {
+               fclose(stdout);
+               fclose(stderr);
+       }
        if (waitpid(child, &status, 0) == -1)
                err(EX_OSERR, "waitpid failed");
        return (WIFEXITED(status) ? WEXITSTATUS(status) : 1);