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base repository: ilbers/isar
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head repository: venkata-pyla/isar
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  • 6 commits
  • 19 files changed
  • 1 contributor

Commits on Dec 15, 2023

  1. wic:rootfs-u-boot.py: Set timestamps for newly updated files 

    The u-boot rootfs image is not reproducible because the
`update-u-boot-script` is creating new files with build timestamps,
whereas the rootfs files timestamps are set to SOURCE_DATE_EPOCH during
do_rootfs_finalize task and so for set the timestamps for the newly
updated files.

Signed-off-by: venkata pyla <[email protected]>
    @venkata-pyla
    venkata-pyla committed Dec 15, 2023
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  2. linux-module: Use debug-prefix-map to build modules deterministically 

    The custom linux modules are built non-determinstically due to the
reason that the kernel build includes absolute paths in the debug
information which is not necessary and can be trimmed using
`debug-prefix-map` option.

Signed-off-by: venkata pyla <[email protected]>
    @venkata-pyla
    venkata-pyla committed Dec 15, 2023
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  3. wic: Set file system uuid to ext4 partitions 

    Adding pre configured UUID's to the file systems will helps to build
reproducible images.

Signed-off-by: venkata pyla <[email protected]>
    @venkata-pyla
    venkata-pyla committed Dec 15, 2023
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  4. wic: use E2FSPROGS_FAKE_TIME and hash_seed to generate reproducible ext4 

    images

E2FSPROGS_FAKE_TIME: sets fixed times for the inodes in the file system.
hash_seed: creates reproducible directory indexes in the file system.

Reference commit in e2fsprogs: e1f7100643a46456be107b33098f6034b0835e6d

Signed-off-by: venkata pyla <[email protected]>
    @venkata-pyla
    venkata-pyla committed Dec 15, 2023
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  5. wic: honor the SOURCE_DATE_EPOCH in case of updated fstab 

    In case user requested to build a binary repeatable package,
it's required to honor the SOURCE_DATE_EPOCH environment
variable. So forcefully set mtime inside all the routines
which modify fstab in case it is updated.

Taken from openembedded-core: 99719a3712a88dce8450994d995803e126e49115

Signed-off-by: venkata pyla <[email protected]>
    @venkata-pyla
    venkata-pyla committed Dec 15, 2023
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  6. wic: make ext2/3/4 images reproducible 

    Ext2/3/4 FS contains not only mtime, but also ctime, atime and crtime.
Currently, all the files are being added into the rootfs image using
mkfs -d functionality which affects all the timestamps excluding mtime.
This patch ensures these timestamps inside the FS image equal to
the SOURCE_DATE_EPOCH if it is set.

taken from openembedded-core: 75d2dd0ea7790db2e8ee921784ca373abff2df65

Signed-off-by: venkata pyla <[email protected]>
    @venkata-pyla
    venkata-pyla committed Dec 15, 2023
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