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Re: [libvirt] [PATCH] doc: Add statment about permissions needed to do a core dump



Dňa 15.9.2011 21:32, Eric Blake wrote / napísal(a):
That sounds wrong to me. We already have the ability to relabel files and directories so that qemu can access them; why should the core file be any different than any other image file where libvirt is able to grant proper permissions?
Well, I looked through the code and it seemed to me that it's done that way. I couldn't reproduce that because my qemu runs with uid 0.

Also, the wording is misleading - you are talking about 'search' permissions on the parent directories, not 'execute' on the file itself (the x bit is double-duty, execute for files and search for directories). So we should not be mentioning execute permissions. If we can't fix the real bug (that is, that libvirt is not granting proper permissions to qemu to be able to create the core dump), then I'd favor wording more like:

Yes, search permission. I somehow still call it execute even on directories even though I am aware of the difference :/ ... I'll fix it.
Hypervisors may require the user to manually ensure proper permissions on the file named by @to.

That's elegant, thanks :).

Peter


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