2009 09/14/2009 06/12/2009 41 Showing in detail the flow of actions from the kernel up into the end user applications and back. Major changes happened recently to the entire device handling stack. Abstractions of abstractions which didn't work out got removed from the system. HAL is no longer part of the game and replaced by the kernel, udev, DeviceKit and ConsoleKit. The basic idea stays the same, but the cake is cut into different pieces, and this is what will be explained here. 06/12/2009