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Re: [libvirt] [PATCHv4 12/15] qemu: use common API for reading difficult files

On 03/10/2011 05:14 AM, Daniel P. Berrange wrote:
> On Wed, Mar 09, 2011 at 07:18:30PM -0700, Eric Blake wrote:
>> Direct access to an open file is so much simpler than passing
>> everything through a pipe!
> Did you test with SELinux in enforcing mode - there's a very
> slight chance this could impact things, though I think we
> do label all FDs correctly these days.

Yes, I did, and things still worked to a local disk (where I'm assuming
SELinux enforcing would have stopped me).  In fact, when passing the fd
via SCM_RIGHTS, things still worked even without relabeling the file
(although I have no idea if that's a hole in SELinux enforcing).  I'm
still in the middle of testing saving to a root-squash NFS location,
then I will repost this series for one last review.

>> * src/qemu/qemu_driver.c (qemudOpenAsUID)
>> (qemudDomainSaveImageClose): Delete.
>> (qemudDomainSaveImageOpen): Rename...
>> (qemuDomainSaveImageOpen): ...and drop read_pid argument.  Use
>> virFileOpenAs instead of qemudOpenAsUID.

Eric Blake   eblake redhat com    +1-801-349-2682
Libvirt virtualization library http://libvirt.org

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