Mapping

Mapping is a relationship maintained by the RPC binder service between an ordered triple (program number, version number, and network ID) and a service address on a machine serviced by the RPC binder. The current set of mappings represents the available registered RPC services on a host. The Trusted Solaris environment supports single-level mapping and multilevel mapping.

• Program number - A number assigned to identify the remote procedure.

• Version number - The version number of the remote procedure.

• Network ID - The network transport to which the network address refers.

Single-Level Mapping

A single-level mapping is a mapping the RPC binder service advertises only to clients that have the same sensitivity label as the server that created the mapping.

Multilevel Mapping

A multilevel mapping (MLM) is a mapping the RPC binder service advertises to all clients regardless of their sensitivity label. A multilevel mapping is created when a server has the net_mac_read privilege in its effective set when it makes the RPC library call to register the service with the RPC binder service.