[PATCH 00/11] Make rootfs build reproducible

[Felix Moessbauer <felix.moessbauer@siemens.com>]

This series finally makes the rootfs generation bit-reproducible
from debian bullseye on. Parts of it have already been sent
as individual patches. However, image reproducibility can only
be achived once all parts are reproducible itself. By that,
these patches are included in this series as well.

With this series, the following parts are now fully reproducible.
This has been tested on the isar-image-base target.

- custom initramfs (creation and updates)
- debian initramfs (only updates are relevant)
- custom kernel (debian kernel is reproducible itself)
- rootfs itself
- tar file generation (<image>.tar)
- ext4 generation (only from bookworm on, more tests needed)

Other parts that are still not reproducible are:

- WIC (should be solved in OE already)
- containers (untested yet)

Best regards,
Felix Moessbauer
Siemens AG

Felix Moessbauer (10):
  fix rebuild of rootfs_finalize task
  rootfs postprocess: clean python cache
  remove non-portable ldconfig aux-cache
  generate deterministic clear-text password hash
  update debian initramfs in deterministic mode
  create custom initramfs in deterministic mode
  make deb_add_changelog idempotent
  deb_add_changelog: set timestamp to valid epoch
  deb_add_changelog: use SOURCE_DATE_EPOCH
  make custom linux-image bit-by-bit reproducible

venkata pyla (1):
  image.bbclass: fix non-reproducible file time-stamps inside rootfs

 meta-isar/conf/local.conf.sample              | 10 +++++++++
 meta/classes/debianize.bbclass                | 22 +++++++++++++------
 meta/classes/image-account-extension.bbclass  | 10 ++++++++-
 meta/classes/image.bbclass                    | 21 ++++++++++++++++--
 meta/classes/initramfs.bbclass                |  5 +++++
 meta/classes/rootfs.bbclass                   | 13 +++++++++++
 .../linux/files/debian/isar/build.tmpl        |  1 +
 .../linux/files/debian/rules.tmpl             | 14 +++++++++++-
 meta/recipes-kernel/linux/linux-custom.inc    |  2 ++
 9 files changed, 87 insertions(+), 11 deletions(-)

-- 
2.34.1