Reading a serial id for a usb device
in [Win32 API]
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From: cold80 on 6 Dec 2006 11:39 I'm wondering how I can read the serial id (if any) and other device dipendent data (such as capacity, number of blocks, etc) of a usb device (actually, just memories sticks). I would like to attach to these informations some security I want to implement in my application. I read a lot of stuff about the subject, and the most interesting one is about using DeviceIoControl. The problem is that I can't get any information with it. I use it with the parameter IOCTL_CHANGER_GET_PRODUCT_DATA and I always receive errors like "Incorrect function" or "The request is not supported", even for normal IDE hard disks. Instead, using GetVolumeInformation I can get some information, even a kind of serial that I don't know if it's really device dependent. Can you help me in some way? Cheers Sebastiano
From: Uwe Sieber on 7 Dec 2006 03:08 cold80 wrote: > I'm wondering how I can read the serial id (if any) and other device > dipendent data (such as capacity, number of blocks, etc) of a usb > device (actually, just memories sticks). I would like to attach to > these informations some security I want to implement in my application. > I read a lot of stuff about the subject, and the most interesting one > is about using DeviceIoControl. The problem is that I can't get any > information with it. I use it with the parameter > IOCTL_CHANGER_GET_PRODUCT_DATA and I always receive errors like > "Incorrect function" or "The request is not supported", even for normal > IDE hard disks. Instead, using GetVolumeInformation I can get some > information, even a kind of serial that I don't know if it's really > device dependent. Can you help me in some way? As the name implies IOCTL_CHANGER_GET_PRODUCT_DATA can be used with changer devices only. There is no relation to USB devices. It can be done thru a SetupDi enumeration. I've shown this in a sample: http://www.codeproject.com/system/RemoveDriveByLetter.asp Download the demo project. It includes some comment lines about the USB serial number. Uwe
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