Re: [Xen-devel] [PATCH v3 04/24] xen: guestcopy: Provide an helper to safely copy string from guest

[Daniel De Graaf <dgdegra@xxxxxxxxxxxxx>]

On 01/13/2015 09:25 AM, Julien Grall wrote:
> Flask code already provides an helper to copy a string from guest. In a later
> patch, the new DT hypercalls will need a similar function.
>
> To avoid code duplication, copy the flask helper (flask_copying_string) to
> common code:
>      - Rename into safe_copy_string_from_guest
>      - Add comment to explain the extra +1
>      - Return directly the buffer and use the macros provided by
>      xen/err.h to return an error code if necessary.
>
> Signed-off-by: Julien Grall <julien.grall@xxxxxxxxxx>
Acked-by: Daniel De Graaf <dgdegra@xxxxxxxxxxxxx>

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