[libvirt] [PATCH v2 6/8] virFDStream: Add option for delete file after it's opening
Daniel P. Berrange
berrange at redhat.com
Wed Apr 6 08:59:21 UTC 2011
On Tue, Apr 05, 2011 at 10:55:40AM -0600, Eric Blake wrote:
> On 04/05/2011 10:12 AM, Michal Privoznik wrote:
> > This is needed if we want to transfer a temporary file. If the
> > transfer is done with iohelper, we might run into a race condition,
> > where we unlink() file before iohelper is executed.
> >
> > * src/fdstream.c, src/fdstream.h,
> > src/util/iohelper.c: Add new option
> > * src/lxc/lxc_driver.c, src/qemu/qemu_driver.c,
> > src/storage/storage_driver.c, src/uml/uml_driver.c,
> > src/xen/xen_driver.c: Expand existing function calls
>
> I'm not convinced about this commit. We should instead be fixing
> iohelper to receive its file by fd inheritance, so that it doesn't have
> to open() in the first place. Then you don't need iohelper to worry
> about unlink().
My intention was that iohelper could also do uid/gid changes
in the future to cope with opening files on root squashing
NFS. For that we'd want it to be doing the open, not libvirtd
Regards,
Daniel
--
|: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :|
|: http://libvirt.org -o- http://virt-manager.org :|
|: http://autobuild.org -o- http://search.cpan.org/~danberr/ :|
|: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|
More information about the libvir-list
mailing list