--- src/flyisofs/main.c.orig	Wed Apr 27 19:20:22 2016
+++ src/flyisofs/main.c	Wed Apr 27 19:23:33 2016
@@ -879,6 +879,10 @@ write_padding(void)
 
 int main(int argc, char* argv[])
 {
+    if (pledge("stdio", NULL) == -1) {
+	perror("pledge");
+	exit(2);
+    }
     int rv = 0;
     unsigned long int i = 0;
     unsigned long int max_files_needed = 0;