On Feb 18 21:15, Andrew Dyer wrote:
> I am having problems using ioperm() to try and access a parallel printer port
> on
> a PCI card in my system running WinXP. The port is mapped to I/O port address
> 0xDCD8. I cannot access the port because the ioperm() driver has a check to
> limit I/O port accesses to < 0x400.
>
> from /usr/src/ioperm-0.4/driver/ioperm.c, lines 95-100
>
> /* test input buffer size and parameters */
> if ((io_stack->Parameters.DeviceIoControl.InputBufferLength <
> sizeof (struct
> ioperm_data))
> || (!ioperm_data) || (ioperm_data->from +
> ioperm_data->num > 0x400))
> {
> Irp->IoStatus.Status = STATUS_INVALID_PARAMETER;
> } else {
> [...]
> I can't rebuild the driver as I don't have access to the DDK. Can someone
The necessary ddk files are part of the w32api package in the Cygwin
distro. You don't have to install the Microsoft DDK package.
> rebuild it with the check modified so I could test it?
The ioperm package has no maintainer anymore since 2006. If anybody
feels that maintaining ioperm would be something they could consider as
a fun side job, just read http://cygwin.com/setup.html and follow the
instructions.
Corinna
--
Corinna Vinschen Please, send mails regarding Cygwin to
Cygwin Project Co-Leader cygwin AT cygwin DOT com
Red Hat
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