moss-kernel/libkernel

libkernel

Architecture-independent kernel building blocks for operating systems.

libkernel provides the core abstractions that a kernel needs to manage memory, processes, filesystems, and synchronisation, agnostic of the an underlying CPU architecture. It is designed to run in a no_std environment and uses feature gates to keep the dependency footprint minimal.

Feature gates

Feature	Enables	Implies
sync	Synchronisation primitives (spinlock, mutex, rwlock…)	—
alloc	Memory allocators (buddy, slab) and collection types	sync
paging	Page tables, PTE helpers	alloc
proc	Process identity types (UID/GID, capabilities)	—
fs	VFS traits, path manipulation, block I/O	proc, sync
proc_vm	Process virtual-memory management (mmap, brk, CoW)	paging, fs
kbuf	Async-aware circular kernel buffers	sync
all	Everything above	all of the above

Quick start

Add libkernel to your Cargo.toml with only the features you need:

[dependencies]
libkernel = { version = "0.1", features = ["sync", "proc"] }

The CpuOps trait

Most synchronisation and memory primitives are generic over a CpuOps implementation. This trait abstracts the handful of arch-specific operations (core ID, interrupt masking, halt) that the portable code depends on.

License

Licensed under the MIT license. See LICENSE for details.