Re: [Xen-devel] bug in dom create script regarding xenstore permission?

[weiming <zephyr.zhao@xxxxxxxxx>]

Hi Vincent,

Thanks for letting me know.

Is their any way to override this default behavior?
I have a script in domU, which is supposed to post some info to xenstore after it boots up.
Yes, I can manually grant permission after I create a guest domain, but I wish I could automated it.

Thanks,
Weiming

On Tue, Jul 14, 2009 at 1:45 PM, Vincent Hanquez <vincent.hanquez@xxxxxxxxxxxxx> wrote:

weiming wrote:

Hi,

I upgraded from xen 3.2 to xen 3.4 and found that in 3.4, I can't write xenstore in domU.
Then, I found that the owner of the /local/domain/<domid> is 0.
That is:
When I used xs_get_permissions to get the permission of "/local/domain/1", I got
(0,0), (1,1)   (dom, perm)
which implies that dom0 is the owner, and dom1 has read-only perm.

in xen 3.2, it returns (1,0), which is correct.

So I guess it might be a bug in the dom create scripts, but I can't find where.

Hi weiming,

it's not a bug. the behavior that you are seeing in 3.2 was a security issue. 3.4 got the issue fixed.

Cheers,
--
Vincent

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