Is it possible to create an ACL to deny access to a specific user (say
jdoe) to a specific file?
I'm not interested in the trivial solution of an ACL that gives access to the file to all users except
jdoe. This solution has the disadvantage that any user created successively in the system won't have access to the file.
Creating a group of all users except
jdoe and granting group access to the file bears the same disadvantage.
setfacl -x u:jdoe /path/file won't work as it removes only created ACLs.