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[Xen-devel] Re: [RFC] [PATCH] sysfs support for Xen attributes

On Thu, 2006-01-12 at 12:53 -0600, Anthony Liguori wrote:
> We wish to make management hypercalls as the root user in userspace 
> which means we have to go through the kernel.  Currently, we do this
> by 
> having /proc/xen/privcmd accept an ioctl() that takes a structure
> that 
> describe the register arguments.  The kernel interface allows us to 
> control who in userspace can execute hypercalls.

ioctls on proc is evil though (so is ioctl-on-sysfs). It's a device not
a proc file!

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