USB mass storage programming

[Madison Kelly]

Hi,

   I am not much of a programmer so I hope this helps somewhat. I have 
been working on a backup program that uses external USB drives and I 
know that the devices are listed under 
/proc/scsi/{scsi|sg|usb-storage-#}/#. When I 'cat' my external chassis I 
get:

# This the actual drive data, after rescanning the scsi bus:
[madison-7pyt9le+KA8 at public.gmane.org tle-bu]$ sudo cat /proc/scsi/scsi
Attached devices:
Host: scsi0 Channel: 00 Id: 00 Lun: 00
   Vendor: IBM-DTTA Model: -371440          Rev: T71O
   Type:   Direct-Access                    ANSI SCSI revision: 02

# This is the chassis
[madison-7pyt9le+KA8 at public.gmane.org tle-bu]$ sudo cat /proc/scsi/usb-storage-0/0
    Host scsi0: usb-storage
        Vendor: In-System Design
       Product: USB Storage Adapter
Serial Number: 11100E00006792AF
      Protocol: Transparent SCSI
     Transport: Bulk
          GUID: 05ab006011100e00006792af
      Attached: Yes

   There are a lot of other interesting files in /proc/scsi* that may 
help, too.

HTH,

Madison

Stewart C. Russell wrote:
> I'm trying to port a tiny Windows utility for controlling raw mode on my 
> Nikon digital camera to Linux. It's almost trivial, but I've never done 
> any USB/SCSI interface programming before.
> 
> All I need to do is check that the device ID strings match particular 
> values, and if they do, set another device field to another string value.
> 
> I can almost understand the Windows C++ here: 
> <http://e2500.narod.ru/raw_format_e.htm#cpixraw>, but was wondering how 
> it differs under Linux.
> 
> thanks,
>  Stewart


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