Device Drivers Which Include mkdir("/dev")

Joel Sherrill joel at
Sat Feb 20 00:25:58 UTC 2021

On Fri, Feb 19, 2021, 5:32 PM Chris Johns <chrisj at> wrote:

> On 20/2/21 7:56 am, Joel Sherrill wrote:
> > On Fri, Feb 19, 2021 at 2:51 PM Gedare Bloom <gedare at
> > <mailto:gedare at>> wrote:
> >
> >     I think the suggestion is to provide a catch-all rather than try to
> add new
> >     faults for every possible condition. This mkdir is a pretty esoteric
> fault
> >     that is unlikely to happen in properly developed code.
> >
> > Then why shouldn't this just be a debug _Assert and value not check
> deliberately?
> Will the call ever fail in production? Could a user configure RTEMS in a
> manner
> that generates the failure?
> > Isn't an assert something that should not happen in a properly designed
> BSP. In
> > this case, it would be the sysinit magic that would be utterly broken.
> I would not step out as far as utterly broken but yes I see your point.
> There
> are other places where we have taken this approach.
> If the lack of making a directory in GRLIB is handled by errors in the
> other
> dependent calls then why not add some documentation to the BSP.

Confirmation appreciated but it is making the directory to out a device
node. The device node create will fail if there isn't a directory so this
will return an error.

Which means an assert is ok

> Chris
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