# Test Case: Compact Special Inodes and Linux dev_t Decode

**Test ID**: TC022-compact-inode-special

## Objective

Verify compact char/block/FIFO inodes and Linux `new_decode_dev` conversion to
FreeBSD `dev_t`.

## Fixture

Use `images/compact.erofs`. Source metadata records real nodes
`char-large=2748:344865`, `block-large=2748:344865`, and `fifo`; structured
evidence asserts compact inodes and raw on-disk `i_u.rdev=0x543abc21` for both
devices. Compile `tests/stat_special.c` natively in FreeBSD.

## Procedure

```sh
./stat_special char  "$mnt/char-large"  2748 344865
./stat_special block "$mnt/block-large" 2748 344865
./stat_special fifo  "$mnt/fifo"
stat -f '%N mode=%p rdev=%r' "$mnt/char-large" "$mnt/block-large" "$mnt/fifo"
```

## Expected Results

- Char and block helpers report major 2748, minor 344865, and raw FreeBSD
  `st_rdev=0xa430005bc21`.
- FIFO type is correct and `st_rdev=NODEV`.
- A raw little-endian cast would differ; all helper checks and cleanup pass.