feat(ddi): build OS payload as verity /usr image pinned by verity.usrhash - #153
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mrbobbytables wants to merge 2 commits into
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…hash Enforce the Flatcar-compatible /usr dm-verity contract in the DDI and installer UKI (projectbluefin#135, Phase 4 of the Flatcar base migration design): - In elements/oci/bluefin-server-ddi.bst: - Add freedesktop-sdk.bst:components/cryptsetup.bst build-depends. - Enforce the 1,065,345,024-byte hard size budget before filesystem creation, failing loudly if payload content exceeds the limit. - Pre-allocate the filesystem to the exact budget offset and format with mkfs.xfs -f -L bluefin-usr. - Format and append the dm-verity hash tree at offset 1,065,345,024 using veritysetup format (260,094 blocks of 4096 bytes). - Print the root hash to build output and save to verity.usrhash. - In elements/oci/bluefin-server-installer.bst: - Read the verity root hash from /ddi/verity.usrhash. - Add verity.usr=PARTLABEL=USR-A verity.usrhash=${USR_HASH} to the target UKI kernel command line in dracut and ukify. - In tests/unit/test_ddi_verity.py and test_installer_contract.py: - Add comprehensive contract tests validating budget checks, cryptsetup dependency, veritysetup formatting arguments, and UKI cmdline pinning. - Update docs/skills/ddi-installer.md with verity payload details. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> Signed-off-by: mrbobbytables <mrbobbytables@users.noreply.github.com>
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Summary
Builds the OS payload as a dm-verity
/usrimage pinned byverity.usrhashin the target UKI cmdline (#135, Phase 4 of the Flatcar base migration design in PR #123).Changes
elements/oci/bluefin-server-ddi.bst:freedesktop-sdk.bst:components/cryptsetup.bsttobuild-dependsforveritysetup.HASH_OFFSET=1065345024) and creates an XFS filesystem formatted withmkfs.xfs -f -L bluefin-usr.veritysetup format(260,094 blocks of 4096 bytes).verity.usrhashandbluefin-server-ddi-<version>.verityinto the install root.elements/oci/bluefin-server-installer.bst:/ddi/verity.usrhashstaged from the DDI element.dracutandukify buildto includeverity.usr=PARTLABEL=USR-A verity.usrhash=${USR_HASH}.tests/unit/test_installer_contract.pyto assertverity.usr=PARTLABEL=USR-Aandverity.usrhash=${USR_HASH}in the target UKI command line.tests/unit/test_ddi_verity.pycovering cryptsetup build dependency, budget enforcement, veritysetup formatting arguments, root hash emission, and target UKI cmdline pinning.docs/skills/ddi-installer.mdto document the appended verity hash tree andverity.usrhashpinning.Verification
pytest tests/unit: 217 passed, 1 xfailed.bats tests/unit: 62 passed.python3 .github/scripts/docs-checks.py: passed.python3 .github/scripts/check-release-version.py: passed.python3 .github/scripts/check-k0s-version.py: passed.Closes #135
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