Re: PATCH: handle non aligned mmaps of sections

[Alexandre Julliard]

Marcus Meissner  writes:
> The file itself is page aligned in these cases, so don't get bad
> overlaps.
>
> This is in a codepath which did not trigger before, this is just new
> with WDM handling.

I don't think it makes sense to use the normal mapping code for such
files, we should really have a separate loader for the NT kernel stuff
(which can of course re-use some lower level functions of the current
loader).

PATCH: handle non aligned mmaps of sections

[Steven Edwards]

--- Alexandre Julliard  wrote:
> I don't think it makes sense to use the normal mapping code for such
> files, we should really have a separate loader for the NT kernel
> stuff
> (which can of course re-use some lower level functions of the current
> loader).

Do we also create a stub implementation of ntoskrnl for the driver
support? SecDev.sys is reported to load under ReactOS and I would like
to help get it to load under WINE.

Thanks
Steven

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PATCH: handle non aligned mmaps of sections

[Uwe Bonnes]

> > > > > "Steven" == Steven Edwards  writes:

Steven> --- Alexandre Julliard  wrote:
    >> I don't think it makes sense to use the normal mapping code for such
    >> files, we should really have a separate loader for the NT kernel
    >> stuff (which can of course re-use some lower level functions of the
    >> current loader).

Steven> Do we also create a stub implementation of ntoskrnl for the
    Steven> driver support? SecDev.sys is reported to load under ReactOS and
    Steven> I would like to help get it to load under WINE.

More question:

How does a user program call into SecDev.sys? Via DeviceIOControl()? I
looked at some .sys files, and they don't export anything. How is
DeviceIOControl reached?

Bye

PATCH: handle non aligned mmaps of sections

[Marcus Meissner]

On Wed, Nov 12, 2003 at 05:59:31PM +0100, Uwe Bonnes wrote:
> > > > > > "Steven" == Steven Edwards  writes:
> Steven> --- Alexandre Julliard <[e-mail]> wrote:
> >> I don't think it makes sense to use the normal mapping code for such
> >> files, we should really have a separate loader for the NT kernel
> >> stuff (which can of course re-use some lower level functions of the
> >> current loader).
>
> Steven> Do we also create a stub implementation of ntoskrnl for the
> Steven> driver support? SecDev.sys is reported to load under ReactOS and
> Steven> I would like to help get it to load under WINE.
>
> More question:
>
> How does a user program call into SecDev.sys? Via DeviceIOControl()? I
> looked at some .sys files, and they don't export anything. How is
> DeviceIOControl reached?

On load, the loader calls start(DRIVER_OPEN *do, PUNICODE_STRING *name);

The DRIVER_OPEN struct is filled out by the called function, including lots
of function pointers. One of them is called from DeviceIoControl().

Ciao, Marcus

PATCH: handle non aligned mmaps of sections

[Marcus Meissner]

On Wed, Nov 12, 2003 at 08:38:03AM -0800, Steven Edwards wrote:
> --- Alexandre Julliard  wrote:
> > I don't think it makes sense to use the normal mapping code for such
> > files, we should really have a separate loader for the NT kernel
> > stuff
> > (which can of course re-use some lower level functions of the current
> > loader).
>
> Do we also create a stub implementation of ntoskrnl for the driver
> support? SecDev.sys is reported to load under ReactOS and I would like
> to help get it to load under WINE.

We will need to.

I have a very small stub implementation on my laptop, but before
fixing the loader it will not make sense to submit it ;)

Ciao, Marcus