#!/bin/sh
# DF-2653 build: forge the misaligned-key poison image.
set -e
cd "$(dirname "$0")"
[ -f base2651.img ] || (cp ../DF-2651/base2651.img.gz . && gunzip -kf base2651.img.gz)
python3 forge_2653.py base2651.img forge2653.img
# The poison bref must NOT be CHECK_NONE (0x00) or the write takes the
# overwrite-in-place path and never reallocates.  Use iscsi32 (0x30).
python3 - <<'EOF'
import struct, sys
sys.path.insert(0, '.')
from h2common import recompute_volhdr_crcs
img = bytearray(open('forge2653.img','rb').read())
o = 0x2004000 + 4*128                       # poison slot 4 in f2653 indirect
assert struct.unpack_from('<Q', img, o+8)[0] == 0x7c000
img[o+1] = 0x30                             # methods: CHECK_ISCSI32
recompute_volhdr_crcs(img)
open('forge2653b.img','wb').write(img)
print("forge2653b.img: poison methods=0x30 (forces COW realloc)")
EOF
echo "built forge2653.img forge2653b.img"