Having user-level credentials, whereby you talk to an already-running 'higher-level' process to give you another set of credentials reminds me of Plan 9's facto

Having user-level credentials, whereby you talk to an already-running 'higher-level' process to give you another set of credentials reminds me of Plan 9's factotum(4): * http://man.9front.org/4/factotum http://man.9front.org/4/factotum * https://en.wikipedia.org/wiki/Factotum_(software) https://en.wikipedia.org/wiki/Factotum_(software) * http://9p.io/sys/doc/auth.html http://9p.io/sys/doc/auth.html A bit Kerberos-like.