[fpc-pascal] porting fpIoctl() to windows

Alain Michaud Alain.Michaud at nrc-cnrc.gc.ca
Mon May 29 23:09:37 CEST 2006


I use FpIOctl from "BaseUnix" . My platform is Linux. I do FpOpen then
FpIOCTL. It works!


The kernel 2.6 has a new naming convention for the function number. See
the file: asm/ioctl.h

This file contains many constants and the final call number is assembled
from the direction type, device number, function number, etc...

I wanted to write a unit that would simulate this file (ioctl.h), but,
this header file contains mainly macros. I do not think that it is
possible to write some Pascal code that would in fact be a macro! If
someone knows if it possible to write macros in Pascal please tell me.

In the mean time, I calculate the function number "by hand", knowing the
device number, function number, IO_RW, etc... Or if I use a precedure do
do this, then this will slow the program down.

For the Windows platform, I can not help you sorry.  

Thank you 

Alain Michaud

On Mon, 2006-05-29 at 22:47 +0200, Marc Santhoff wrote:
> Hi,
> on FreeBSD I use fpOpen, fpIoctl, etc. to drive some generic device. In
> my porting efforts to win32 I have found the more generic FileOpen, but
> no equivalent of fpIoctl or it's underlying unix system call ioctl().
> An old win32.hlp told me Windows has "DeviceIoCtl()", but I'm not really
> sure if this is what I need. At least there is ntohing about this
> funtion in the RTL sources of fps 2.0.2.
> How can I port this calls?
> TIA,
> Marc
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