Notifications from Kernel Drivers
A general solution to the problem of accessing arbitrary file system items from a kernel driver is to implement a user space daemon process that acts as a helper process on behalf of the kernel driver. This process will handle requests from the driver, perform the specified operation, and then pass the result of the operation back to the driver. This approach can be extended beyond requests such as reading and writing files, and can be used to perform operations that are not possible within the kernel, such as displaying a dialog to the user. A good example of user interaction that originates from the kernel is the standard USB family, which presents a warning dialog if a device is connected that requires more ...
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