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xen-devel
Re: [Xen-devel] [PATCH] libxl: remove console 0 backend directory from x
On Tue, 5 Oct 2010, Ian Campbell wrote:
> # HG changeset patch
> # User Ian Campbell <ian.campbell@xxxxxxxxxx>
> # Date 1286288339 -3600
> # Node ID 0788bb897f692681036e33c0047e8cbb63565c35
> # Parent a2c40fa3bc6c8471e1988e445f449975cf6f3822
> libxl: remove console 0 backend directory from xenstore on devices destroy
>
> The first PV console device has an unusual frontend path for
> historical reasons (/local/domain/<domid>/console rather than
> /local/domain/<domid>/device/console/0).
>
> Therefore we need to check this additional frontend path as well as
> those under /local/domain/<domid>/device when tearing down all
> backends or else we miss the backend for the console.
>
> As part of this we need to ensure that the frontend directory has a
> valid link to the backend, currently this link does not exist.
>
> Fix this by adding libxl__device_frontend_path to return the correct
> frontend path, accounting for the special case, and use it from
> libxl__device_add_generic. Also add libxl__device_backend_path for
> consistency.
>
> This also allows console 0 setup to follow essentially the same code
> path as other consoles within libxl_device_console_add, reducing the
> special casing required there.
>
> This also fixes the link from backend to frontend which until now gave
> a dangling link to the normal device path instead of the exceptional
> one.
>
applied, thanks
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