Standard USB Identifiers

NTDEV
1

I have a disk filter, and when a usb mass storage is added, in AddDevice I can use IoGetDeviceProperty to get the associated Hardware IDs.

I want the numeric vendor and product ID, but USBSTOR has already converted them to string. How can I get the numeric values? i need Standard USB Identifiers
not Identifiers Generated by USBSTOR.SYS

Is it possible using a disk level filter at all, or should I use another method?

thanks

2

From the disk level you can’t get the usb identifiers as numbers. Either filter below usbstor or parse the hw id string at your current filtering spot

d

debt from my phone

From: xxxxx@gmail.com
Sent: 1/4/2012 3:55 AM
To: Windows System Software Devs Interest List
Subject: [ntdev] Standard USB Identifiers

I have a disk filter, and when a usb mass storage is added, in AddDevice I can use IoGetDeviceProperty to get the associated Hardware IDs.

I want the numeric vendor and product ID, but USBSTOR has already converted them to string. How can I get the numeric values? i need Standard USB Identifiers
not Identifiers Generated by USBSTOR.SYS

Is it possible using a disk level filter at all, or should I use another method?

thanks

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