[RFC PATCH v4 0/8] ext4: tests for the dirdata feature (encryption+casefold, LUFID)

These tests cover the ext4 "dirdata" feature (storing extra metadata
in directory entries beyond the file name), sent separately from the
kernel and e2fsprogs dirdata patch series for reference and review.

The companion kernel series is:
  [PATCH v6 00/11] Data in direntry (dirdata) feature

ext4/064 and ext4/065 verify that encryption and case-insensitive
(casefold) directories continue to work both without and with
dirdata enabled. ext4/066 and ext4/067 exercise the LUFID (Locally
Unique File ID) use of dirdata via a new EXT4_IOC_SET_LUFID ioctl,
using a small set_lufid helper utility added in this series.
ext4/068 verifies that LUFID is correctly carried through overwrite
rename and RENAME_EXCHANGE. ext4/069 covers LUFID in inline_data
directories.

Changes in v4:
- Added ext4/068: two-part rename test (overwrite rename and
  RENAME_EXCHANGE) that verifies the destination directory slot
  carries the source inode's LUFID after the rename, not the stale
  LUFID of the replaced inode.  Tests the fix in ext4_setent() that
  copies the LUFID dirdata payload through rename.
- Added ext4/069: inline_data directory regression test.  Verifies
  that a LUFID set via EXT4_IOC_SET_LUFID on an entry in an
  inline_data directory survives to disk.  Catches the bug where
  ext4_add_dirent_to_inline() was passing NULL instead of dfid,
  silently losing the LUFID.
- Expanded _dump_dir_structure() in common/ext4 to match directory
  entries by inode number instead of filename when the directory is
  encrypted (ciphertext names on disk do not match the plaintext
  filenames visible through the VFS).
- Minor updates to ext4/065 to use the improved helper and add
  verification of the fid= field in the encrypted+dirdata case.

Artem Blagodarenko (7):
  ext4: add common helper to check whether dirdata is applied
  ext4/064 encryption + casefold feature combination WITHOUT dirdata
  ext4/065 encryption + casefold + dirdata feature combination
  ext4: add set_lufid utility
  ext4/066: verify LUFID dirdata operations
  ext4/067: LUFID and encryption+casefold+dirdata
  ext4/068: test LUFID is carried through overwrite rename and
    RENAME_EXCHANGE

Lustre Development (1):
  ext4/069: test LUFID in inline_data directory entries

 common/config      |   1 +
 common/ext4        |  63 ++++++++++++
 src/Makefile       |   2 +-
 src/set_lufid.c    | 196 +++++++++++++++++++++++++++++++++++
 tests/ext4/064     | 153 +++++++++++++++++++++++++++
 tests/ext4/064.out |  17 +++
 tests/ext4/065     | 252 +++++++++++++++++++++++++++++++++++++++++++++
 tests/ext4/065.out |  26 +++++
 tests/ext4/066     | 159 ++++++++++++++++++++++++++++
 tests/ext4/066.out |   4 +
 tests/ext4/067     | 137 ++++++++++++++++++++++++
 tests/ext4/067.out |   4 +
 tests/ext4/068     | 202 ++++++++++++++++++++++++++++++++++++
 tests/ext4/068.out |   5 +
 tests/ext4/069     | 164 +++++++++++++++++++++++++++++
 tests/ext4/069.out |   7 ++
 16 files changed, 1391 insertions(+), 1 deletion(-)
 create mode 100644 src/set_lufid.c
 create mode 100755 tests/ext4/064
 create mode 100644 tests/ext4/064.out
 create mode 100755 tests/ext4/065
 create mode 100644 tests/ext4/065.out
 create mode 100755 tests/ext4/066
 create mode 100644 tests/ext4/066.out
 create mode 100755 tests/ext4/067
 create mode 100644 tests/ext4/067.out
 create mode 100755 tests/ext4/068
 create mode 100644 tests/ext4/068.out
 create mode 100755 tests/ext4/069
 create mode 100644 tests/ext4/069.out

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2.43.7