[RFC PATCH 0/8] staging: apfs: init APFS module

[Ethan Carter Edwards <ethan@ethancedwards.com>]

Hello everyone,

This is a follow up patchset to the driver I sent an email about a few
weeks ago [0]. I understand this patchset will probably get rejected, 
but I wanted to report on what I have done thus far. I have got the 
upstream module imported and building, and it passes some basic tests 
so far (I have not tried getting XFS/FStests running yet). 

Like mentioned earlier, some of the files have been moved to folios, but
a large majority of them still use bufferheads. I would like to have
them completely removed before moved from staging/ into fs/.

I have split everything up into separate commits as best as I could.
Most of the C files rely in functions from other C files, so I included
them all in one patch/commit.

I am curious to hear everyone's thoughts on this and to start getting
the ball rolling for the code-review process. Please feel free to
include/CC anyone who may be interested in this driver/the review
process. I have included a few people, but have certainly missed others.

[0]: https://lore.kernel.org/lkml/20250307165054.GA9774@eaf/

Signed-off-by: Ethan Carter Edwards <ethan@ethancedwards.com>
---
Ethan Carter Edwards (8):
      staging: apfs: init lzfse compression library for APFS
      staging: apfs: init unicode.{c,h}
      staging: apfs: init apfs_raw.h to handle on-disk structures
      staging: apfs: init libzbitmap.{c,h} for decompression
      staging: apfs: init APFS
      staging: apfs: init build support for APFS
      staging: apfs: init TODO and README.rst
      MAINTAINERS: apfs: add entry and relevant information

 MAINTAINERS                                      |    6 +
 drivers/staging/Kconfig                          |    2 +
 drivers/staging/apfs/Kconfig                     |   13 +
 drivers/staging/apfs/Makefile                    |   10 +
 drivers/staging/apfs/README.rst                  |   87 +
 drivers/staging/apfs/TODO                        |    7 +
 drivers/staging/apfs/apfs.h                      | 1193 ++++++++
 drivers/staging/apfs/apfs_raw.h                  | 1567 +++++++++++
 drivers/staging/apfs/btree.c                     | 1174 ++++++++
 drivers/staging/apfs/compress.c                  |  442 +++
 drivers/staging/apfs/dir.c                       | 1440 ++++++++++
 drivers/staging/apfs/extents.c                   | 2371 ++++++++++++++++
 drivers/staging/apfs/file.c                      |  164 ++
 drivers/staging/apfs/inode.c                     | 2235 +++++++++++++++
 drivers/staging/apfs/key.c                       |  337 +++
 drivers/staging/apfs/libzbitmap.c                |  442 +++
 drivers/staging/apfs/libzbitmap.h                |   31 +
 drivers/staging/apfs/lzfse/lzfse.h               |  136 +
 drivers/staging/apfs/lzfse/lzfse_decode.c        |   74 +
 drivers/staging/apfs/lzfse/lzfse_decode_base.c   |  652 +++++
 drivers/staging/apfs/lzfse/lzfse_encode.c        |  163 ++
 drivers/staging/apfs/lzfse/lzfse_encode_base.c   |  826 ++++++
 drivers/staging/apfs/lzfse/lzfse_encode_tables.h |  218 ++
 drivers/staging/apfs/lzfse/lzfse_fse.c           |  217 ++
 drivers/staging/apfs/lzfse/lzfse_fse.h           |  606 +++++
 drivers/staging/apfs/lzfse/lzfse_internal.h      |  612 +++++
 drivers/staging/apfs/lzfse/lzfse_main.c          |  336 +++
 drivers/staging/apfs/lzfse/lzfse_tunables.h      |   60 +
 drivers/staging/apfs/lzfse/lzvn_decode_base.c    |  721 +++++
 drivers/staging/apfs/lzfse/lzvn_decode_base.h    |   68 +
 drivers/staging/apfs/lzfse/lzvn_encode_base.c    |  593 ++++
 drivers/staging/apfs/lzfse/lzvn_encode_base.h    |  116 +
 drivers/staging/apfs/message.c                   |   29 +
 drivers/staging/apfs/namei.c                     |  133 +
 drivers/staging/apfs/node.c                      | 2069 ++++++++++++++
 drivers/staging/apfs/object.c                    |  315 +++
 drivers/staging/apfs/snapshot.c                  |  684 +++++
 drivers/staging/apfs/spaceman.c                  | 1433 ++++++++++
 drivers/staging/apfs/super.c                     | 2099 ++++++++++++++
 drivers/staging/apfs/symlink.c                   |   78 +
 drivers/staging/apfs/transaction.c               |  959 +++++++
 drivers/staging/apfs/unicode.c                   | 3156 ++++++++++++++++++++++
 drivers/staging/apfs/unicode.h                   |   27 +
 drivers/staging/apfs/xattr.c                     |  912 +++++++
 drivers/staging/apfs/xfield.c                    |  171 ++
 45 files changed, 28984 insertions(+)
---
base-commit: 695caca9345a160ecd9645abab8e70cfe849e9ff
change-id: 20250210-apfs-9d4478785f80

Best regards,
-- 
Ethan Carter Edwards <ethan@ethancedwards.com>