On October 31 2008, the Linux Unified Kernel project released the version 0.2.2 of LUK. The new version provides some operations like token-opening which are in the range of security mechanism and fix a number of bugs affected the stability and compatibility. To simplify the installing of Linux Unified Kernel, a GUI installing program is added.
Linux Unified Kernel(LUK) is a computer operating system kernel intended to be binary-compatible with application software and device drivers made for Microsoft Windows and Linux.
The Linux Unified Kernel project adds all Windows kernel mechanisms into the Linux kernel, including Process/thread management, Object management, virtual memory management, Synchronization, System calls, Windows Registry mechanism, WDM device driver framework, Windows DPC mechanism, etc to form a new kernel. This means that both Linux and Windows applications and device drivers can run directly on the new kernel.
But LUK is not simply an accumulation of the two kernels. In order to prevent LUK from becoming bloated, if a function has been achieved in the ReactOS kernel, and also can be achieved using the Linux kernel , then LUK prefers to use the last one.
LUK has two sets of syscalls and their corresponding syscall tables: a Windows syscall set and a Linux syscall set. Windows applications call the syscall table via software interrupt "int 0x2e" to make a system call. Linux applications call syscall table via "int 0x80".
The LUK project does not develop the Windows and the Linux userland libraries. Those libraries are offered by the Wine (or Windows/ReactOS) project and the Linux project.
LUK is primarily written in the C programming language, and is licensed under the terms of the GNU General Public License. Although the project is in the alpha development stage as of 2008, many Windows programs already work well.