erofs-freebsd-out-tree/tests/TC042-dirent-large-dir.md

Test Case: Directory Entry Decoding - Multi-Block Directory

Test ID: TC042-dirent-large-dir Category: Directory Operations Priority: High

Objective

Decode a real multi-block directory without missing, duplicating, or truncating entries across directory-block boundaries.

Procedure

Mount metadata/namei-base.erofs and run:

./readdir_probe /tmp/repo22-g3/mnt/wide 128
find /tmp/repo22-g3/mnt/wide -maxdepth 1 -type f |
  sed 's#.*/##' | sort > actual-wide.txt
cmp fixtures/metadata/expected-wide.txt actual-wide.txt
stat /tmp/repo22-g3/mnt/wide/entry-000-abcdefghijklmnopqrstuvwxyz.txt
stat /tmp/repo22-g3/mnt/wide/entry-159-abcdefghijklmnopqrstuvwxyz.txt
stat /tmp/repo22-g3/mnt/wide/entry-319-abcdefghijklmnopqrstuvwxyz.txt

Expected Results

All 320 real files plus dot and dotdot are returned once. The helper reports 322 restartable kernel and libc positions and the three boundary samples stat successfully. Record the image hash and cleanup.