Comment 16 for bug 256216

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Scott James Remnant (Canonical) (canonical-scott) wrote : Re: [Bug 256216] Re: Ubuntu is missing /dev/infiniband/rdma_cm group ownership udev rule

On Wed, 2008-11-19 at 16:22 +0000, Roland Dreier wrote:

> D-Bus/PolicyKit seems very much overengineered and too complex for this
> issue, and it doesn't fit the model of RDMA very well anyway, since the
> whole point of RDMA is that unprivileged userspace applications use RDMA
> hardware directly without the overhead of a system call into the kernel,
> let alone a D-Bus method call to another process.
>
I don't agree.

Adding a PolicyKit authorization to use RDMA devices is not practically
any harder than adding a group; in fact, maintenance-wise it's
substantially easier.

HAL may then be used to apply an ACL to the devices automatically if you
want raw library aaccess.

Scott
--
Scott James Remnant
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