[EDIT: The original message was rejected because it was too large; I am re-sending w/ bzip2'd attachment]
This (rather enormous) patch adds the unzstd, zstdcat, and zstd -d applets; as well as zstd support for modprobe, etc. (Arch Linux is now using zstd format by default for its pacman packages, initramfs, and kernel modules.) When enabled, this adds around 28kb to the statically linked musl-x86 32-bit busybox. But the patch adds some ~14k lines of code and comments, mostly in the libarchive/zstd directory. The code was pulled unmodified from the current https://github.com/facebook/zstd.git repository, only the bare minimum of files needed for decompression are included. Among the files is an xxhash.[ch] implementation which might be useful to other applets in the future, but I left it in the zstd directory for now. - Jeff
0001-Add-support-for-zstd-decompression.patch.bz2
Description: BZip2 compressed data
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