Re: [Xen-devel] [PATCH 2/4] Add device tree ocontext nodes to Xen policy

[Daniel De Graaf <dgdegra@xxxxxxxxxxxxx>]

On 03/12/2015 01:27 PM, Julien Grall wrote:
> Hi Daniel,
>
> On 12/03/15 17:12, Daniel De Graaf wrote:
> >                         ;
> > +dtree_context_def      : DEVICETREECON path security_context_def
> > +                       {if (define_devicetree_context()) return -1;}
> > +                       ;
> The regex for matching the device tree path is different from a path.
>
> the pathname convention is:
>
> node-name@unit-address
>
> The characters allowed for node-name/unit-name are:
>         0-9 a-z A-Z , . _ + -
>
> Although the @unit-address may be ommitted.
>
> So the regex should be something like:
> "/"({alnum}|['\._\+\-@])*
This is addressed in patch 4, where a quoted version of the path
expression is added which allows these characters (and others).

--
Daniel De Graaf
National Security Agency

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