CurrentRelease returns the current kernel release ensuring that ubuntu and debian release numbers are accurate.

CurrentVersion returns the current kernel version in LINUX_VERSION_CODE format (see VersionFromRelease()).

Version implements KERNEL_VERSION equivalent macro #define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + ((c) > 255 ? 255 : (c))).

VersionFromRelease converts a release string with format 4.4.2[-1] to a kernel version number in LINUX_VERSION_CODE format.