linux-kernel - [PATCH 0/4] cifs: Add support for querying reparse points from userspace

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Message-Id: <20241222154340.24104-1-pali@kernel.org>
Date: Sun, 22 Dec 2024 16:43:36 +0100
From: Pali Rohár <pali@...nel.org>
To: Steve French <sfrench@...ba.org>,
	Paulo Alcantara <pc@...guebit.com>,
	Ronnie Sahlberg <ronniesahlberg@...il.com>
Cc: linux-cifs@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 0/4] cifs: Add support for querying reparse points from userspace

This patch series add a new xattr system.reparse for querying reparse
point buffer from userspace, fixes errnos related to reparse points and
do not attempt to use reparse points when server does not support them.

Add new reparse point or changing/deleting existing reparse point is not
implemented yet, can be done in the future via setxattr()/removexattr().

Pali Rohár (4):
  cifs: Split parse_reparse_point callback to functions: get buffer and
    parse buffer
  cifs: Add a new xattr system.reparse for querying repase point from
    SMB server
  cifs: Change translation of STATUS_NOT_A_REPARSE_POINT to -ENODATA
  cifs: Check if server supports reparse points before using them

 fs/smb/client/cifsglob.h     |  6 ++---
 fs/smb/client/cifssmb.c      |  3 +++
 fs/smb/client/inode.c        | 11 +++++----
 fs/smb/client/link.c         |  3 ++-
 fs/smb/client/netmisc.c      |  7 ++++++
 fs/smb/client/nterr.c        |  1 +
 fs/smb/client/nterr.h        |  1 +
 fs/smb/client/reparse.c      | 15 ++++--------
 fs/smb/client/reparse.h      |  5 +---
 fs/smb/client/smb1ops.c      | 17 +++++--------
 fs/smb/client/smb2inode.c    |  8 +++++++
 fs/smb/client/smb2maperror.c |  2 +-
 fs/smb/client/smb2ops.c      | 12 +++++-----
 fs/smb/client/xattr.c        | 46 ++++++++++++++++++++++++++++++++++++
 14 files changed, 96 insertions(+), 41 deletions(-)

-- 
2.20.1