Re: [PATCH v25 03/12] LRNG - /proc interface

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Am Dienstag, 19. November 2019, 11:06:02 CET schrieb Andy Lutomirski:

Hi Andy,

> On Sun, Nov 17, 2019 at 4:16 AM Stephan Müller <smueller@xxxxxxxxxx> wrote:
> > Am Samstag, 16. November 2019, 17:39:40 CET schrieb Andy Lutomirski:
> > 
> > Hi Andy,
> > 
> > > > On Nov 16, 2019, at 1:40 AM, Stephan Müller <smueller@xxxxxxxxxx>
> > > > wrote:
> > > > 
> > > > The LRNG /proc interface provides the same files as the legacy
> > > > /dev/random. These files behave identically. Yet, all files are
> > > > documented at [1].
> > > 
> > > Why?
> > 
> > I am not sure here: are you referring to the documentation? Or the one
> > additional file?
> > 
> > If it is the documentation, do you want me to add it to the patch
> > description? I initially did not add it as these files were present and
> > seemingly known what they provide. But I would add that documentation to
> > the patch description if this is desired.
> 
> Sorry, I should have been a lot more explicit.  Why do you want to add
> a new interface to read the RNG?  What's wrong with the old one?

There is nothing wrong at all. I actually want to be 100% API and ABI 
compliant with the existing random.c. Thus, the list of the sysctls are 
identical to the existing random.c with the same behavior (hence I skipped the 
documentation of these files).

Yet, the wiring up of the interfaces to internal data structures and handlers 
is different than for the existing random.c.

Also, the reason why I created a separate lrng_proc.c (and lrng_interface.c) 
is to allow a possible merger of this similar code with the existing random.c. 
The only question that needs to be solved is to find a common way to invoke 
the random.c internal logic and the LRNG internal logic with these interfaces.
> 
> I think your patch description should explain the purpose of the patch.

Ok, I can surely add a description for each file to the patch description.

Ciao
Stephan






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