[PATCH v1 0/7] Add NFSv4.2 POSIX ACL support to the client

[rick.macklem@gmail.com]

From: Rick Macklem <rmacklem@uoguelph.ca>

The Internet draft "POSIX Draft ACL support for
Network File System Version 4, Minor Version2"
https://datatracker.ietf.org/doc/draft-ietf-nfsv4-posix-acls/
describes an extension to NFSv4.2 so that POSIX
draft ACLs can get acquired and set directly,
without using the loosey NFSv4->POSIX draft mapping
algorith.  It extends the protocol with four new
attributes.

This patch series implements the client side of
this extension for the nfs client.  It is analogous
to the NFSACL protocol used as a sideband protocol
for NFSv3 and allows the ACLs to be acquired/set
be getfacl(1)/setfacl(1).

The current implementation may not handle the
"per file" scope, where individual file objects
store/use either an NFSv4 ACL or a POSIX draft ACL.
The only known file system that implements this
is IBM's GPFS, and only if the "all" option is
set for ACLs on it.  Until a server implements
this case, it will be difficult to implement
correct client semantics for this case.

The last patch is rather large, but I would
get either build failures or build warnings
when I broke it up into smaller chunks.

This patch series requires patch 0001 from
the server series to be applied first.

Rick Macklem (7):
  Add entries to the predefined client operations enum
  Add new entries for handling POSIX draft ACLs
  Make posix_acl_from_nfsacl() global
  Make three functions global and move them to acl.c
  Make nfs4_server_supports_acls() global
  Set SB_POSIXACL if the server supports the extension
  Add support for the NFSv4.2 POSIX draft ACL attributes

 fs/nfs/Makefile         |   2 +-
 fs/nfs/nfs.h            |   3 +
 fs/nfs/nfs34acl.c       |  40 +++
 fs/nfs/nfs3acl.c        |  44 +--
 fs/nfs/nfs42proc.c      | 304 +++++++++++++++++++
 fs/nfs/nfs42xdr.c       | 642 ++++++++++++++++++++++++++++++++++++++++
 fs/nfs/nfs4_fs.h        |   9 +
 fs/nfs/nfs4proc.c       |  18 +-
 fs/nfs/nfs4xdr.c        |   2 +
 fs/nfs/super.c          |   5 +
 fs/nfs_common/nfsacl.c  |   3 +-
 include/linux/nfs4.h    |   2 +
 include/linux/nfs_xdr.h |  51 ++++
 include/linux/nfsacl.h  |   2 +
 14 files changed, 1085 insertions(+), 42 deletions(-)
 create mode 100644 fs/nfs/nfs34acl.c

-- 
2.49.0