29 lines
634 B
Bash
29 lines
634 B
Bash
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#!/bin/bash
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# This is the script that was used to create the image.gz in this directory.
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set -e -u
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mkdir -p mnt
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umount mnt &> /dev/null || true
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dd if=/dev/zero of=image bs=4096 count=128
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mke2fs -O 'verity,extents' -b 4096 -N 128 image
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mount image mnt
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# Create a verity file, but make it fragmented so that it needs at least one
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# extent tree index node, in order to cover the scan_extent_node() case.
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for i in {1..80}; do
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head -c 4096 /dev/zero > mnt/tmp_$i
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done
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for i in {1..80..2}; do
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rm mnt/tmp_$i
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done
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head -c $((40 * 4096)) /dev/zero > mnt/file
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fsverity enable mnt/file
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rm mnt/tmp_*
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umount mnt
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rmdir mnt
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gzip -9 -f image
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