Something Solaris (and its derivates) has had for a rather long time.. (as of 2005, Solaris 10 release: https://www.oracle.com/technical-resources/articles/cust

Something Solaris (and its derivates) has had for a rather long time.. (as of 2005, Solaris 10 release: https://www.oracle.com/technical-resources/articles/custom-roles-rbac-jsp.html https://www.oracle.com/technical-resources/articles/custom-r... ), and further refined in current versions.