Re: [PATCH v7 3/3] SMAF: add fake secure module

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Hi Benjamin,

On 9 May 2016 at 16:07, Benjamin Gaignard <benjamin.gaignard@xxxxxxxxxx> wrote:
> This module is allow testing secure calls of SMAF.
>
"Add fake secure module" does sound like something not (m)any people
want to hear ;-)
Have you considered calling it 'dummy', 'test' or similar ?


> --- /dev/null
> +++ b/drivers/smaf/smaf-fakesecure.c
> @@ -0,0 +1,85 @@
> +/*
> + * smaf-fakesecure.c
> + *
> + * Copyright (C) Linaro SA 2015
> + * Author: Benjamin Gaignard <benjamin.gaignard@xxxxxxxxxx> for Linaro.
> + * License terms:  GNU General Public License (GPL), version 2
> + */
> +#include <linux/module.h>
> +#include <linux/slab.h>
> +#include <linux/smaf-secure.h>
> +
> +#define MAGIC 0xDEADBEEF
> +
> +struct fake_private {
> +       int magic;
> +};
> +
> +static void *smaf_fakesecure_create(void)
> +{
> +       struct fake_private *priv;
> +
> +       priv = kzalloc(sizeof(*priv), GFP_KERNEL);
Missing ENOMEM handling ?

> +       priv->magic = MAGIC;
> +
> +       return priv;
> +}
> +
> +static int smaf_fakesecure_destroy(void *ctx)
> +{
> +       struct fake_private *priv = (struct fake_private *)ctx;
You might want to flesh this cast into a (inline) helper and use it throughout ?


... and that is all. Hope these were useful, or at the very least not
utterly wrong, suggestions :-)


Regards,
Emil

P.S. From a quick look userspace has some subtle bugs/odd practises.
Let me know if you're interested in my input.
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