Hybrid file systems

A computer system, comprising:

• a processor;
• a memory;
• and
• a program comprising a plurality of instructions stored in the memory that are executed by the processor to:
• provide, by a computer system to a virtual system, first access control data associated with a regular computer file that corresponds to a resource on the computer system, the first access control data required for the virtual system to permit access to the regular computer file;
• receive, at the computer system, a direct read from or direct write to one or more sectors of the resource represented by the regular computer file from the virtual system;
• hide, at the computer system, a hidden computer file from the virtual system;
• and
• route, at the computer system, the direct read from or direct write to the hidden computer file on the computer system.

A computer program product for providing a virtual system with direct access to one or more sectors of a resource of a computer system, the computer program product comprising:

• at least one computer readable storage medium having computer readable program instructions embodied therewith, the computer readable program instructions, when read by a processor, being configured to:
• provide, by a computer system to a virtual system, first access control data associated with a regular computer file that corresponds to a resource on the computer system, the first access control data required for the virtual system to permit access to the regular computer file;
• receive, at the computer system, a direct read from or direct write to one or more sectors of the resource represented by the regular computer file from the virtual system;
• hide, at the computer system, a hidden computer file from the virtual system;
• and
• route, at the computer system, the direct read from or direct write to the hidden computer file on the computer system.