serial port link in driver

NTDEV
1

Hi all,

I want to ask one question: if I will add a peace of code to AddDevice function,

UNICODE_STRING strDevice, strCOMx;

RtlInitUnicodeString(&strCOMx, L\??\COMx);
RtlInitUnicodeString(&strDevice, L\Device\MySerialPort0\COMx);
IoCreateSymbolicLink(&strCOMx, &strDevice);

will I be able to use CreateFile function in user application to get access to COMx?

Thank you,
Andrey

2

Yes, but you don’t need the COMx at the end of your device name unless
you are exposing multiple COM port names, see
http://blogs.msdn.com/doronh/archive/2006/08/23/715612.aspx … heh,
looking at the post and your code below, it looks like you copied it
pretty much verbatim :wink:

d

From: xxxxx@lists.osr.com
[mailto:xxxxx@lists.osr.com] On Behalf Of Andrey
Kamchatnikov
Sent: Monday, June 11, 2007 8:40 AM
To: Windows System Software Devs Interest List
Subject: [ntdev] serial port link in driver

Hi all,

I want to ask one question: if I will add a peace of code to AddDevice
function,

UNICODE_STRING strDevice, strCOMx;

RtlInitUnicodeString(&strCOMx, L\??\COMx <file:> );
RtlInitUnicodeString(&strDevice, L\Device\MySerialPort0\COMx
<file:> );
IoCreateSymbolicLink(&strCOMx, &strDevice);

will I be able to use CreateFile function in user application to get
access to COMx?

Thank you,

Andrey

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