After the disk is opened, this can pledge "stdio".

ok doug

diff --git a/sbin/scan_ffs/scan_ffs.c b/sbin/scan_ffs/scan_ffs.c
index 0352246..8c8e6bf 100644 (file)
--- a/sbin/scan_ffs/scan_ffs.c
+++ b/sbin/scan_ffs/scan_ffs.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: scan_ffs.c,v 1.19 2015/01/20 18:22:21 deraadt Exp $   */
+/*     $OpenBSD: scan_ffs.c,v 1.20 2015/10/11 04:33:17 deraadt Exp $   */
 
 /*
  * Copyright (c) 1998 Niklas Hallqvist, Tobias Weingartner
@@ -173,5 +173,8 @@ main(int argc, char *argv[])
        if (fd < 0)
                err(1, "%s", argv[0]);
 
+       if (pledge("stdio", NULL) == -1)
+               err(1, "pledge");
+
        return (ufsscan(fd, beg, end, flags));
 }