US 7,689,566 B1Granted

Method for defining non-native operating environments

AssigneeSun Microsystems, Inc.

InventorsNils A. Nieuwejaar, Eric N. Schrock, William J. Kucharski, Russell A. Blaine, Edward K. Pilatowicz, Adam H. Leventhal

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Abstract

Methods and systems for defining the partitioning between operating system environments are provided. In this method, network resources, devices, and pseudo-filesystems, etc. can be partitioned. This method provides the capability to support services from native and foreign operating environments without colliding on fixed resources. This method simplifies the task of supporting multiple different operating environments. By assigning each operating environment to its own zone, multiple instances of a single operating environment or multiple different operating environments can be simultaneously supported on a single operating system kernel.

Claims5

Dependent claims

A method for handling system calls to multiple different operating systems, the method comprising:

receiving a system call in a kernel associated with a native operating system;
determining whether the system call is received from a native process or a foreign process running within the native operating system memory space, wherein the native process is written for the native operating system and the foreign process is written for an operating system that is different from the native operating system;
invoking an emulation library to transform the system call into a system call recognized by the kernel and executing the transformed system call within the native operating system when the system call is from the foreign process;
and
executing the system call within the native operating system when the system call is from the native process.

2 more elements

Dependencies are inferred from the claim text.