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