[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]

[libvirt] PATCH [0/2]: Deprecate conn, dom, net virterror fields

This is a pair of patches which deprecate the conn, dom and net fields
in the virterror structure.

Programs which use these fields will get a warning (if compiled under
gcc anyway):

  foo.c:123: warning: 'dom' is deprecated (declared at /usr/include/libvirt/virterror.h:81)

The fields themselves are still present and still set, so the ABI
isn't changed.

Now the patch is quite a lot more involved than you might think for
such a simple change.  Part of the problem is that we want to allow
libvirt itself to modify these fields without generating a warning.

Therefore the first part of the patch has to refactor all code within
libvirt which includes "libvirt.h" or "virterror.h" (the public
headers) so that instead this code just includes "internal.h".
"internal.h" already includes the public headers.  This allows
"internal.h" to undefine the deprecation macro.

Of course nothing is quite so simple.  We have two "internal.h" files,
so I renamed the one in the qemud directory to "qemud.h".

I also added something in the HACKING file, stating how *.c files
within libvirt should include header files.

The second part of the patch actually adds the deprecation to the
fields in virterror, and hence is small and simple.


Richard Jones, Emerging Technologies, Red Hat  http://et.redhat.com/~rjones
virt-p2v converts physical machines to virtual machines.  Boot with a
live CD or over the network (PXE) and turn machines into Xen guests.

[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]