An advanced, high-performance, completely dependency-free Virtual Filesystem (VFS) and Cryptographic Storage Engine written from scratch in pure C++20.
The entire ecosystem compiles directly down to bare metal using only core C++ standard library headers (<fstream>, <vector>, <memory>, <cstring>), rendering it completely immune to third-party dependency breakage, licensing shifts, or hidden security vulnerabilities.
- Sovereign File Container Allocation: Encapsulates an entire virtual disk mapping state within a single native, packed
.purityfilesystem block image. - Linked-List Cluster Chaining: Dynamically splits large data arrays across non-contiguous 4096-byte hardware sectors, using an in-memory Block Allocation Table (BAT) pointer chain.
- Symmetric Bit-Wise Scrambling: Hardens file bytes on-the-fly before hard disk sector writes using a custom, lightweight XOR bit mask matrix with zero computational overhead.
- Inter-Op Host Data Bridges: Built-in streaming pipelines to smoothly
importraw binary data from host operating system tracks andexportthem back onto physical local drive paths. - Path-Aware Console Interpreter Shell: An isolated terminal environment loop featuring dynamic path prefix filters to handle nested folder structures (
mkdirandcd).
git clone https://github.com
cd Purity-FSmake clean
make./purity-fsformat <disk_name.purity> <clusters>- Partitions a clean static block memory array file.mount <disk_name.purity>- Loads the custom system superblock signature into active memory tracking cache vectors.mkdir <directory_name>- Allocates an isolated nested directory record inside the inode metadata tree.cd <directory_name_or_..>- Traverses current working directory context paths dynamically.ls- Lists all files and sub-folders matching the active directory path prefix.write <filename> <string_payload>- Encrypts and writes a string across chained sector blocks.read <filename>- Slices, decrypts, and outputs virtual file contents to the screen.import <host_path> <vfs_name>- Imports a physical file straight from the host OS partition into VFS sectors.export <vfs_name> <host_path>- Decrypts and exports a virtual file back onto your local computer disk.exit / quit- Safely flushes volatile tables to disk bytes and terminates the shell.
Purity-FS is fully open-source and free to distribute under the terms of the official MIT License contract structure.