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fix(dracut.sh): Ensure hardlink deduplication is reproducible #2703

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fix(dracut.sh): Ensure hardlink deduplication is reproducible #2703

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15 changes: 11 additions & 4 deletions dracut.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -2091,8 +2091,17 @@ for ((i = 0; i < ${#include_src[@]}; i++)); do
fi
done

clamp_mtimes() {
find "$1" -newer "$dracutbasedir/dracut-functions.sh" -print0 \
| xargs -r -0 touch -h -m -c -r "$dracutbasedir/dracut-functions.sh"
}

if [[ $do_hardlink == yes ]] && command -v hardlink > /dev/null; then
dinfo "*** Hardlinking files ***"
if [[ $DRACUT_REPRODUCIBLE ]]; then
# hardlink only de-dupes identical mtimes; clamp any dynamically-generated files.
clamp_mtimes "$initdir"
fi
hardlink "$initdir" 2>&1 | ddebug
dinfo "*** Hardlinking files done ***"
fi
Expand Down Expand Up @@ -2299,8 +2308,7 @@ if [[ $uefi == yes ]]; then
fi

if [[ $DRACUT_REPRODUCIBLE ]]; then
find "$initdir" -newer "$dracutbasedir/dracut-functions.sh" -print0 \
| xargs -r -0 touch -h -m -c -r "$dracutbasedir/dracut-functions.sh"
clamp_mtimes "$initdir"

if [[ "$(cpio --help)" == *--reproducible* ]]; then
CPIO_REPRODUCIBLE=1
Expand All @@ -2315,8 +2323,7 @@ if [[ $create_early_cpio == yes ]]; then
echo 1 > "$early_cpio_dir/d/early_cpio"

if [[ $DRACUT_REPRODUCIBLE ]]; then
find "$early_cpio_dir/d" -newer "$dracutbasedir/dracut-functions.sh" -print0 \
| xargs -r -0 touch -h -m -c -r "$dracutbasedir/dracut-functions.sh"
clamp_mtimes "$early_cpio_dir/d"
fi

# The microcode blob is _before_ the initramfs blob, not after
Expand Down