NFSv4-patched ACL lib dependencies

[Paarvai Naai]

Hi all,

I'm returning to the issue of NFSv4 in the process of upgrading my
company's servers.  I noticed on the following page

http://www.citi.umich.edu/projects/nfsv4/linux/

it states that "... the patches make fundamental utilities such as cp
and ls depend on ldap and krb5 libraries (among others) ...."  This is
basically the same issue that I had a while ago (cf. "Problem with ACL
lib dependencies" from Nov 21, 2006).

I have one possible suggestion.  Specifically, it looks like the
dependencies primarily originate from the use of
/usr/lib/libnfsidmap.so.  Rather than dynamically linking to
/usr/lib/libnfsidmap.so, one could use dlopen to dynamically open
/usr/lib/libnfsidmap.so during run-time and populate function pointers
to the functions needed by the patched libacl.so.  If
/usr/lib/libnfsidmap.so is not available, then nfsv4 support can
simply be bypassed at runtime.  In this way, it is possible to have a
patched version of libacl (normally found in /lib) that is not by
default dependent on libraries in /usr/lib.  This type of fix can also
help facilitate propagating the patches for libacl upstream so they
are available in common Linux distributions by default.

Thoughts?

Best regards,
Paarvai