[ostree] ostbuild: Recursively make mount points private

[Colin Walters <walters src gnome org>]

commit d32b2cb572e9f735432346686d50e2fa686e292f
Author: Colin Walters <walters verbum org>
Date:   Tue Dec 6 14:36:57 2011 -0500

    ostbuild: Recursively make mount points private
    
    This ensures we're not going to mutate any global state.

 src/ostbuild/ostbuild-user-chroot.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/ostbuild/ostbuild-user-chroot.c b/src/ostbuild/ostbuild-user-chroot.c
index ed8d616..c75654a 100644
--- a/src/ostbuild/ostbuild-user-chroot.c
+++ b/src/ostbuild/ostbuild-user-chroot.c
@@ -136,8 +136,8 @@ main (int      argc,
    * totally correct because the targets for our bind mounts may still
    * be shared, but really, Fedora's sandbox is broken.
    */
-  if (mount ("/", "/", "none", MS_PRIVATE, NULL) < 0)
-    fatal_errno ("mount(/, MS_PRIVATE)");
+  if (mount ("/", "/", "none", MS_PRIVATE | MS_REC, NULL) < 0)
+    fatal_errno ("mount(/, MS_PRIVATE | MS_REC)");
 
   /* Now let's set up our bind mounts */
   for (i = 0; i < after_bind_arg_index; i += 3)