Messages in this thread | | | Date | Fri, 13 Feb 2004 14:18:50 -0800 | From | Greg KH <> | Subject | Re: devfs vs udev, thoughts from a devfs user |
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On Fri, Feb 13, 2004 at 02:08:36PM -0800, walt wrote: > Greg KH wrote: > > > ...sysfs exports loads of info about every device in your system, not > > only the major:minor info. It exports what device this major:minor > > is assigned to, the topology of the device... > > For the benefit of us schlubs looking in from the outside, could you tell > us what you mean by 'topology' ?
Run 'tree' from /sys/devices/ to see the topology of how all of the different devices in your system are hooked together. Notice how the usb mouse is connected to a usb controller which is connected to a pci device, and so on.
udev can use that "chain" of devices to determine how to name your device.
thanks,
greg k-h - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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