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[v7,0/7] Add SBOM generation with debsbom

Message ID 20260121150719.2719579-1-felix.moessbauer@siemens.com
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Series Add SBOM generation with debsbom | expand

Message

MOESSBAUER, Felix Jan. 21, 2026, 3:07 p.m. UTC 
This patchset adds proper SBOM generation in the two standard formats
SPDX and CycloneDX during the rootfs generation process.

The generation is itself is handled by a SBOM generator  `debsbom` [1]
which is developed as an open source project at Siemens. It is still
early in development, but it has enough features for what we require
in isar. The required dependencies which are not yet available as
Debian packages were minimally packaged directly in isar too.

This is a followup of the previous RFC [2]. Since then the series has
changed a lot. The SBOM generation was moved from a simple OE lib to
`debsbom`. This also meant the introduction of a separate chroot was
necessary. The SBOM generation process was also moved from the image
step to the rootfs step, along with a lot of minor changes and
improvements.

[1] https://github.com/siemens/debsbom
[2] https://groups.google.com/g/isar-users/c/8L-CF4BJY0I/m/p0N3o_zfAAAJ

Changes since v6:

- fixed imager bom failure on transitive image types (detected in isar-cip,
  wic -> squashfs).
- updated debsbom to 0.6.0+git
- add support for license information
- rebased onto next

Note: I'm still not able to run the full testsuite. The related patches
to cleanup the testsuite are pending on the list for quite some time. I
did some extensive local testing with isar-cip core and product layers,
but any additional testing is highly welcome.

Changes since v5:

- fix isar-image-ci on qemuamd64-bullseye (set IMAGER_BOM according to
  machine changes made in image file)
- rebased onto next

Changes since v4:

- rebased onto next
- fix race condition on creation of ${DEPLOY_DIR_SBOM} (aka ${DEPLOY_DIR_IMAGE})

Changes since v3:

- fix issue on external bullseye initramfs (we now disable sbom generation
  on all unsupported distros rootfs instances)
- update debsbom to v0.4.0
- rebased onto next

Changes since v2:

- fix issues when HOST_ARCH != DISTRO_ARCH on derived distributions
- update debsbom to v0.3.0, which fixes the Origin: bug reported in v2
- generate SBOM for imager as well and create merged sbom of .wic image
- resend imager manifest + wic manifest patches to reduce conflicts

Note, that the patches p1-p5 are most important as they add basic SBOM
support. The remaining patches address the imager + .wic bom part,
which also can be merged later on.

Changes since v1:

- remove tarball
- refactor packaging (auto-derive python dependencies)
- only build missing packages (varies on bookworm, trixie, noble)
- add ubuntu support
- only generate sboms for supported distributions (bookworm/jammy and
  onwards)
- update debsbom (includes bug fixes and more information for source
  packages)


Felix Moessbauer (7):
  debsbom: update to version 0.6.0
  feat: add license information to SBOM as well
  add support to add imager dependencies to BOM
  wic: create uniform manifest describing all image components
  qemuamd64: add IMAGER_BOM entries
  imager: create SBOM of IMAGER_BOM packages
  wic: create uniform SBOM describing all image components

 doc/user_manual.md                            |  1 +
 meta-isar/conf/machine/qemuamd64.conf         |  1 +
 .../recipes-core/images/isar-image-ci.bb      |  1 +
 .../image-tools-extension.bbclass             | 29 ++++++++++++++++++
 meta/classes-recipe/image.bbclass             |  9 ++++++
 meta/classes-recipe/imagetypes_wic.bbclass    | 30 +++++++++++++++++++
 meta/classes/sbom.bbclass                     |  3 +-
 ..._0.5.1.bb => python3-debsbom_0.6.0+git.bb} |  3 +-
 8 files changed, 75 insertions(+), 2 deletions(-)
 rename meta/recipes-support/python3-debsbom/{python3-debsbom_0.5.1.bb => python3-debsbom_0.6.0+git.bb} (91%)