[libvirt] [PATCH 0/2] Some new utility functions

[Laine Stump]

I'm planning to use these to fix the problems with creating storage
volumes on root-squashing NFS servers, but since they may be of
general utility I thought I'd throw them out for comments beforehand -
it something different would make them more generally useful, better
to change it now than after I've already finished code to use them.

My plan is to use virRunWithHook() to call setuid (or possibly some
sort of capng calisthenics) prior to execing qemu-img and
qcow-create. virFileCreate and virDirCreate will be used when creating
raw volumes.

I have written test code to verify that virFileCreate works in several
different scenarios. Haven't done so with virRun yet, but it's a
fairly simple change, just exposing __virExec arguments that were
already there. (I'd previously written test code (yes, it worked ;-))
that used a virRun with uid/gid args added on, but have decided
against that approach, since this seems more flexible)