Hi Ken,
Welcome to the mailing list!

You can refer to the illumos book "Writing Device Drivers":

https://illumos.org/books/wdd/preface.html

Specifically:

https://illumos.org/books/wdd/character-21002.html#character-21002

https://illumos.org/books/wdd/block-34861.html#block-34861

Kind regards,

Aurélien

On Fri, Jun 1, 2018 at 5:04 PM, <ken....@abelia.ocn.ne.jp> wrote:

> Hi,
>
> I am application engineer, but I want  to write device driver
> that run in user process.
>
> Character and Block device I want to write,
> But I do not know where am I start.
>
> chardev? very easy way , look /dev/null you lough,
> but I do not know where it place.
>
> and I do not know the magic number
> that how can I decide dev_no,
> more, the rule of /devices/.....
>
> I order my new machine, the sandbox
> please tell me how to write drivers.
>
>
> Best regards,
> ken.
>
> _______________________________________________
> openindiana-discuss mailing list
> openindiana-discuss@openindiana.org
> https://openindiana.org/mailman/listinfo/openindiana-discuss
>



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