Hey everyone,
BusyBox is practically everywhere in embedded Linux, initramfs, and rescue disks. But being a massive collection of C utilities, it carries the usual C risks (buffer handling, integer overflows, memory management bugs).
Over the last two weeks, I've been hacking on BusyBox-RS, an MIT-licensed rewrite in Rust designed specifically for embedded use cases:
Minimal binary footprint: Built with `opt-level = "z"`, fat LTO, symbol stripping, and `panic = abort`.
Compile-time feature selection: Use Cargo features or
make tinyconfig / defconfig to only compile the applets your board actually needs.Upstream verified: Tested directly against the upstream BusyBox regression test suite (100% pass rate across 46 applets so far, including `cp`, `grep`, `sort`, `printf`, `cmp`, `readlink`, and checksums).
Nix flake ready: Reproducible development environment via
nix develop.GitHub: https://github.com/rebizzz/busybox-rs
Feel free to check it out, run
make check, and share feedback!https://redd.it/1x0pkdl
@r_linux
