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Subject: [Bug 191218] mountd: can't change attributes for XXXXXXX: Invalid
 radix node head, rn: 0 0xXXXXXXXXXXXXXXX; can still mount path
Date: Fri, 20 Jun 2014 20:39:23 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=191218

--- Comment #3 from yaneurabeya@gmail.com ---
(In reply to yaneurabeya from comment #0)

...

> As shown above, /tmp/bar doesn't show up via showmount -e for the list of
> exports but the path is mountable and I created /tmp/hello_world, and it

This should have been "/tmp/bar/hello_world"

(In reply to Xin LI from comment #2)
> Exporting subdirectories of a mountpoint is problematic and this is a well
> known limitation of the protocol.  I don't consider this as a security issue
> because the administrator is supposed to know what they are doing.

The security concern was over the fact that mountd is clearly reporting an
error in the code, but hiding the fact that it's actually an error; unless the
administrator is looking for errors from mountd, they have absolutely _no_ idea
that the path is actually exported.

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