On Thu, 28 Jan 2010, Sergey Lapin wrote:
> Hi, all!
>
> What is usage scenario for file storage gadget? I need to achieve this goal:
>
> USB cable is out -> /dev/sdaX is mounted om /data and accessible within a device
> USB cable is inserted -> /dev/sda is unmounted and then exported with
> g_{file,mass}_storage
> USB cable is removed -> /dev/sdaX is mounted back.
>
> How could I achieve this in generic way?
Currently there is no way to achieve this. You would need to modify
all the USB device controller drivers. Make them export a file in
sysfs containing the current connection state and allow processes to
poll that file.
Alan Stern
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