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image_types: Fix reproducible builds for initramfs and UKI img

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I've encountered issues reproducing initramfs and UKI image builds,
which will be fixed with this patch.

1. initramfs
There's a symbolic link to /sbin/init, which is appended to the cpio archive after creation.
The links timestamp needs to be static and the cpio append command needs the '--reproducible' flag to produce deterministic outcomes.

2. Unified Kernel Image
'--preserve-dates' is required for a static 'Time/Date' entry.
I've added '--enable-deterministic-archives' although in my case this
didn't change anything.

(From OE-Core rev: 0d8890f7c1fbea5036acefa3031dcd442b316725)

Signed-off-by: Frieder Paape <frieder@konvera.io>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit fd027729bafb4e085ba0949e38e724f3a8cad102)
Signed-off-by: Steve Sakoman <steve@sakoman.com>
This commit is contained in:
Frieder Paape
2023-06-05 09:00:33 +00:00
committed by Steve Sakoman
parent 6646aadd71
commit b954f15d66
2 changed files with 5 additions and 2 deletions
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2
scripts/lib/wic/plugins/source/bootimg-efi.py
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@@ -330,6 +330,8 @@ class BootimgEFIPlugin(SourcePlugin):
# https://www.freedesktop.org/software/systemd/man/systemd-stub.html
objcopy_cmd = "%s-objcopy" % target_sys
objcopy_cmd += " --enable-deterministic-archives"
objcopy_cmd += " --preserve-dates"
objcopy_cmd += " --add-section .osrel=%s/usr/lib/os-release" % staging_dir_host
objcopy_cmd += " --change-section-vma .osrel=0x20000"
objcopy_cmd += " --add-section .cmdline=%s" % cmdline.name