Common use of Space protection Clause in Contracts

Space protection. Spaces in StoRM will be protected via ACLs. ACLs are based at the moment on user DN and FQANs. Wildcards on DN or FQAN are also supported. ACLs apply at the moment to space token descriptions only (and not to space tokens). However, in StoRM there is a one-to-one mapping between space tokens and space token descriptions. Therefore, setting ACLs on space token descriptions is equivalent to setting ACLs on space tokens. This is an advantage for site administrators that do not have to deal with the internal representation of the space tokens. It is in the short term plans to make the ACLs compliant with the ones defined in this document. Service administrators can manage space protection via StoRM configuration files.