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authorDaniel Golle <daniel@makrotopia.org>2022-04-11 15:25:27 +0100
committerDaniel Golle <daniel@makrotopia.org>2022-04-11 15:29:33 +0100
commitaece8f5ae8d15e5e79b8e34a176895209709afb6 (patch)
tree31d5ade6d160a291fea11bf31b3bf34bce99b7b0 /scripts
parent3aa96efa24c13c6e0aafa5ad826f3f95a3bd74f9 (diff)
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scripts/gen_image_generic.sh: generate reproducible EFI filesystem
Generate FAT filesystem for EFI boot in a reproducible way: * use '--invariant' option of mkfs.fat * set timestamps of all files to SOURCE_DATE_EPOCH * make sure files are ordered locale-independent Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Diffstat (limited to 'scripts')
-rwxr-xr-xscripts/gen_image_generic.sh5
1 files changed, 3 insertions, 2 deletions
diff --git a/scripts/gen_image_generic.sh b/scripts/gen_image_generic.sh
index 6a01c813d7..5e37224736 100755
--- a/scripts/gen_image_generic.sh
+++ b/scripts/gen_image_generic.sh
@@ -31,8 +31,9 @@ dd if="$ROOTFSIMAGE" of="$OUTPUT" bs=512 seek="$ROOTFSOFFSET" conv=notrunc
if [ -n "$GUID" ]; then
[ -n "$PADDING" ] && dd if=/dev/zero of="$OUTPUT" bs=512 seek="$((ROOTFSOFFSET + ROOTFSSIZE))" conv=notrunc count="$sect"
- mkfs.fat -n kernel -C "$OUTPUT.kernel" -S 512 "$((KERNELSIZE / 1024))"
- mcopy -s -i "$OUTPUT.kernel" "$KERNELDIR"/* ::/
+ mkfs.fat --invariant -n kernel -C "$OUTPUT.kernel" -S 512 "$((KERNELSIZE / 1024))"
+ [ "$SOURCE_DATE_EPOCH" ] && find "$KERNELDIR"/ -mindepth 1 -execdir touch -hcd "@${SOURCE_DATE_EPOCH}" "{}" +
+ LC_ALL=C mcopy -m -s -i "$OUTPUT.kernel" "$KERNELDIR"/* ::/
else
make_ext4fs -J -L kernel -l "$KERNELSIZE" ${SOURCE_DATE_EPOCH:+-T ${SOURCE_DATE_EPOCH}} "$OUTPUT.kernel" "$KERNELDIR"
fi