Polyinstantiation
From Wikipedia, the free encyclopedia
Polyinstantiation in computer science is the concept of type (class, database row or otherwise) being instantiated into multiple independent instances (objects, copies). It may also indicate, such as in the case of database polyinstantiation, that two different instances have the same name (identifier, primary key).
In Operating system security, polyinstantiation is the concept of creating a user or process specific view of a shared resource. I.e. Process A cannot affect process B by writing malicious code to a shared resource, such as UNIX directory /tmp.[1][2]
Polyinstantiation of shared resources have similar goals as process isolation, an application of virtual memory, where processes are assigned their own isolated virtual address space to prevent process A writing into the memory space of process B.
