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Making an OS

I was part of a team that was tasked with developing an OS based on the x86 architecture and should, in theory, compile to an image that can be run on a bare x86 machine. The OS has to be able to run several threads and processes concurrently in kernel mode as well as in user mode, develop the virtual file system (VFS) to be able to provide interface between the kernel and various file systems and a virtual memory (VM) to enable the kernel to manage user address spaces, to run user level code and handle system calls.

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We implemented the following features as part of Weenix: 

• Procs - Threads, processes, and synchronization primitives.
• VFS(virtual file system) - Interface between the operating system(kernel) and other file systems such as S5FS, FAT32 and device drivers
• VM(virtual memory) -  Running user-level code, page frame management, address space implementation, handling system calls, and everything else needed to combine all of the previous componets into a fully functioning operating system. This includes virtual memory maps, handling page faults, memory management via anonymous objects and shadow objects, and system call support.

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View official documentation here.

view demo

access to code repo can be provided upon request

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