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erofs-freebsd-out-tree/tests/TC147-flat-inline-block-bounds.md
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2026-08-13 10:44:59 +02:00

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# Test Case: FLAT_INLINE Metadata-Block Bounds
**Test ID**: TC147-flat-inline-block-bounds
## Objective
Verify a valid inline payload reads exactly and a checksum-valid inline range
crossing its inode metadata block fails repeatedly with `EINTEGRITY`.
## Fixture
Use `images/inline.erofs`, `images/inline-cross-block.erofs`, and
`source/inline/inline.txt`. Evidence records the NID/inode offset, patched
`i_xattr_icount`, inline start at block offset 4068, 31-byte size, valid CRC,
and both image/source hashes.
## Procedure
Mount `inline.erofs` on a fresh md unit:
```sh
stat -f 'size=%z blocks=%b' "$mnt/inline.txt"
cmp /tmp/repo22-g1/source/inline/inline.txt "$mnt/inline.txt"
sha256 /tmp/repo22-g1/source/inline/inline.txt "$mnt/inline.txt"
```
Clean it up, then mount `inline-cross-block.erofs` without listing the root:
```sh
./read_probe expect-error "$mnt/inline.txt" 97
./read_probe expect-error "$mnt/inline.txt" 97
set +e
truss -o /tmp/tc147.truss stat "$mnt/inline.txt"
rc=$?
set -e
printf 'stat_rc=%d\n' "$rc"
tail -20 /tmp/tc147.truss
```
Record dmesg delta and clean the second mount/provider.
## Expected Results
- Positive data matches source and reports 8 sectors.
- Every corrupt lookup/open returns errno 97, never `ENOENT` or stale-vnode
errors; no next-block read, panic, dmesg error, or cleanup residue occurs.