[OpenAFS-port-darwin] openafs Mac OS 10.1 port

[Brian Biswas]

I needed to make a couple of code changes to get openafs to compile
for Mac OS 10.1:

In directory sys/afs/DARWIN, I changed source files "osi_vm.c" and 
"osi_vnodeops.c":

Changed a structure member named "ui_holdcnt" to "ui_refcount"
There is no structure member named "ui_holdcnt". This is in the ubc_info
structure which is defined in /usr/include/sys/ubc.h.

In source file "osi_vm.c", I changed two function calls of the type:

                        ubc_getobject(vp);

to

                        ubc_getobject(vp, UBC_FLAGS_NONE);

Compiler complained otherwise.

At this point openafs would build.

When loading src/libafs/MODLOAD/libafs.nonfs.o (which gets installed as:
/usr/vice/etc/afs.kext/Contents/MacOS/afs), the following undefined symbol 
errors occur:

%kextload /usr/vice/etc/afs.kext
kmodload: kld(): kmodload: Undefined symbols:kmodload:
kmodload: __ubc_getobject
kmodload: _ubc_info_free
kmodload: kld_load() failed.Error loading module: kmod load error.

These symbols are both defined in /mach, ubc_getobject is
defined globally, but ubc_info_free is local:

%nm mach | grep ubc_getobject
00199408 A _ubc_getobject

%nm mach | grep ubc_info_free
00198df0 a _ubc_info_free

The function prototype for ubc_getobject is in /usr/include/sys/ubc.h:
   memory_object_control_t ubc_getobject __P((struct vnode *, int));

There isn't one for ubc_info_free. However there is one for
the similiarly sounding ubc_info_deallocate:
   void    ubc_info_deallocate  __P((struct ubc_info *));

Should ubc_info_free in src/afs/DARWIN/osi_vm.c be ubc_info_deallocate?

If I change it to that, rebuild and try to load the module into the kernel,
I still get the error message about ubc_getobject:


%kextload /usr/vice/etc/afs.kext
kmodload: kld(): kmodload: Undefined symbols:kmodload:
kmodload: __ubc_getobject
kmodload: kld_load() failed.Error loading module: kmod load error.

I don't see why one gets this error message since it is defined in the 
kernel.

Ideas???