Doubts about File Systems on FIASCO on ARM (Cortex-A15)

[Maria Soler]

Thanks, Jorge Ventura. Yes, you are right. I am sorry, I meant L4re. I am
used to discuss about the whole system calling it FIASCO (just as most
people do with Linux and its different distributions). So I will rephrase
my question a bit more precisely:

I need to create persistent files that are written in disk from
applications running on L4re. I would also need to load (these or other)
files from disk at run time. I have already created an application that
reads and writes from files saved both in rom and in a tmpfs, but I don't
know how to make persistent files.


On Thu, Jun 19, 2014 at 4:12 PM, Jorge Ventura <
jorge.araujo.ventura at gmail.com> wrote:

> Hi Maria,
> I think that if you watch this presentation http://youtu.be/SyOcmVamsmI
> you will find answers to many of your questions. Specially in the slide
> "Kernel vs. Operating System" it's explain that Fiasco.OC is just the
> kernel that contains two device drivers, UART for basic console and timer
> to be used by scheduler, any other device driver has to be implemented to
> run outside the kernel level.
>
> Ventura
>
>
> On Thu, Jun 19, 2014 at 7:44 AM, Maria Soler <
> m.soler at virtualopensystems.com> wrote:
>
>> Hello,
>>
>> I would need to use file system facilities, but I am not sure how this is
>> done. I can already use rom/ and also tmpfs, but neither is exactly what I
>> need. I need to create persistent files that are written in disk from
>> applications running on FIASCO (directly, not using L4Linux as an
>> intermediary). I would also need to load (these or other) files from disk
>> in run time (loading all files as modules in rom may not be the best
>> solution, specially since we need to create new files "on the go" and be
>> able to load them from other applications.
>>
>> Is there any module/library/whatever in FIASCO that offers this? If there
>> is one, how can we use it/where can we find information about it? In case
>> this is relevant, our applications are in C and we are to run FIASCO in
>> TrustZone Crotex-A15 (in secure mode).
>>
>> Best regards,
>> María.
>>
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>>
>
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