OS X and iOS Kernel Programming

The I/O Kit Framework

The user space API through which a process communicates with a kernel driver is provided by a framework known as “IOKit.framework,” which will hereafter be referred to as the “I/O Kit framework.” The I/O Kit framework allows a user space application to determine the hardware devices and kernel drivers that are present on the system, to watch for the arrival or removal of hardware that can be hot-plugged (such as USB devices), and to interact with I/O Kit drivers. The I/O Kit framework defines the data types that provide a user space representation of kernel objects and the functions that are needed to manipulate these kernel objects. Although the I/O Kit is a C++ based framework in the kernel, the user space I/O Kit framework ...