Daniel Streetman wrote:

> I'm assuming the 'devices' file is intended for users, not programs.

Wrong assumption 8-) The file is also intended to be machine
parseable.

That's how lsusb -t gets the topology, I suggest looking at it
(usb.in.tum.de, CVS module usbutils).

> So basically, I'm wondering how to get all the info that's in the devices
> file, but on a per-device basis (by using the device nodes/files ?).

If you really want to go that route, you need to manually issue
control messages to each device in order to retrieve config descriptors.

Tom

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