Single-File Singularity Containers for Rootless, Verifiable Execution
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Solution Overview
Problem
Conventional computer container systems require root permissions to run and cannot store the container file system in a single file, limiting their functionality and flexibility.
Innovation Solution
A Singularity Image Format (SIF) file system that stores all data related to a container in a single file, allowing independent data regions and enabling cryptographic verification and runtime access without transformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional container systems use a directory of files as root file system, then the container can be executed, but root permissions are required and the container file system cannot be stored in a single file
Solution Approach 1:
The patent merges the container image, file system, and execution environment into a single self-contained file. The container image file includes both the file system binary image and the shell execution string within the same file structure, eliminating the need for separate directory configurations and root permission requirements.
Solution Approach 2:
The single container image file serves multiple functions simultaneously: it acts as the file system, the execution environment, and the configuration repository. The file can be executed directly on the command line like a program, eliminating the need for separate permission management mechanisms.
2Device complexity
If conventional container image files hold only a single data region, then the file structure is simple, but all container data cannot be stored in a single file
Solution Approach 1:
The container image file is segmented into distinct data regions including a file system binary image region and a shell execution string region. Each region serves a specific function while being contained within the single file, allowing both simplicity and comprehensive data storage.
Solution Approach 2:
The shell execution string is nested within the container image file structure, which itself contains the file system binary image. This nested organization allows multiple layers of data to be stored hierarchically within a single file while maintaining clear structural boundaries.
Data Source
AI summary
Systems and apparatus for implementation and management of a singularity image format file in a computer system and methods for making and using the same. In various embodiment, these technologies are used to facilitate storage of all data related to a container in a single file among other things.