NewLabel creates a Label object based on the offset given by offset with a number of labels equal to k.

NewRange describes an SELinux category range, where prefix may include the user, type, role, and level of the range, and n and k represent the highest category c0 to c(N-1) and k represents the number of labels to use.

ParseLabel converts a string value representing an SELinux label into a Label object, extracting and ordering categories.

ParseRange converts a string value representing an SELinux category range into a Range object, extracting the prefix -- which may include the user, type, and role of the range, the number of labels to use, and the maximum category to use.