Driver help

Mon Aug 18 07:47:00 GMT 2003

The ioperm package was very helpful. Thanks for that.
U was now able to compile a sample driver into a .sys file.
I used the SCOpenManager and CreateProcess to get it loaded.
So in effeect, when a write an application program 
││hPort = CreateFile(
│ "\\DosDevices\\mydevice",
│ 0,
│ 0, 
│ NULL, 
│ 0, 
│ 0, 
│ NULL);
│
│if (hPort == (HANDLE)-1)
│ {
│ printf("Open failed :%lx\n",hCommPort);
│ return -1;
│ }
I thought it would succeed. But CreateFile failed!
What may be the reason? A snippet of the CYGWIN code for win driver is as follows:
 RtlInitUnicodeString( &DeviceName, L"\\Device\\mydevice" );
 RtlInitUnicodeString( &SymbolicLinkName, L"\\DosDevices\\mydevice" );
 IoCreateDevice( DriverObject, 0, &DeviceName, ...
 IoCreateSymbolicLink( &SymbolicLinkName, &DeviceName...
Thanks
 Kiran

-----Original Message-----
From: Kiran Bacche 
Sent: Wednesday, August 13, 2003 5:57 PM
To: 'Marcel Telka'
Cc: cygwin@cygwin.com
Subject: RE: Driver help
>From where can I download/see the "ioperm" package ?

Thanks
 Kiran
-----Original Message-----
From: Marcel Telka [mailto:marcel@telka.sk] 
Sent: Wednesday, August 13, 2003 5:58 PM
To: Kiran Bacche
Cc: cygwin@cygwin.com
Subject: Re: Driver help
On Wed, Aug 13, 2003 at 05:53:16PM +0530, Kiran Bacche wrote:
> Wow that's geat.
> I have an isr.c file (actually a device driver)
> I could successfully compile it to generate a ".o" file.
> But how can I convert it to a ".sys" file in CYGWIN environment.

Please read the ioperm sources...
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| Marcel Telka e-mail: marcel@telka.sk |
| homepage: http://telka.sk/ |
| jabber: marcel@jabber.sk |
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