請解釋solaris 10上的文件掛接點 /system/contract

jobandmiss

在solairs 10 上，當(dāng)你用df -k顯示文件系統(tǒng)掛接點時，會有/system/contract條目，請大家發(fā)表自己對其的理解。\r\n\r\n/system/contract\r\n\r\nCTFS (the contract file system) is the interface for creating, controlling, and observing contracts. A contract enhances the relationship between a process and the system resources it depends on by providing richer error reporting and (optionally) a means of delaying the removal of a resource. The service management facility (SMF) uses process contracts to track the processes which compose a service, so that a failure in a part of a multi-process service can be identified as a\r\nfailure of that service.The contract file system supports all the SMF services.