feat(rootfs): compile-time guest hash and versioned rootfs pipeline#269
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DorianZheng merged 3 commits intomainfrom Feb 15, 2026
Merged
feat(rootfs): compile-time guest hash and versioned rootfs pipeline#269DorianZheng merged 3 commits intomainfrom
DorianZheng merged 3 commits intomainfrom
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Introduce a two-stage guest rootfs pipeline with compile-time hash optimization and integrity verification: - ImageDiskManager: cached image-to-ext4 conversion (stage 1) - GuestRootfsManager: versioned rootfs with injected guest binary (stage 2) - Compile-time SHA256 hash of boxlite-guest embedded via build.rs - Runtime verification: refuse to proceed if actual hash mismatches - OnceLock cache eliminates redundant hash computations - GC preserves current-version entries, removes stale ones safely Reduces guest rootfs startup overhead from ~14s to 0ms (cache hit path).
Remove unnecessary `&` on `[0u8; 10]` array literal passed to `std::fs::write`, fixing `needless_borrows_for_generic_args` warning.
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Summary
ImageDiskManager(image→ext4, cached by digest) +GuestRootfsManager(ext4+guest→versioned rootfs, cached by digest+guest hash)boxlite-guestbinary at compile time viabuild.rs, eliminating ~14s of runtime hash computation on startupTest plan
cargo test -p boxlite -- guest_rootfs— 15 tests passmake dev:python— builds with embedded guest hash