Merge tag 'improve-attr-validation-6.10_2024-04-23' of https://git.kernel.org/pub...

xfs: improve extended attribute validation

Prior to introducing parent pointer extended attributes, let's spend
some time cleaning up the attr code and strengthening the validation
that it performs on attrs coming in from the disk.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Chandan Babu R <chandanbabu@kernel.org>
* tag 'improve-attr-validation-6.10_2024-04-23' of https://git.kernel.org/pub/scm/linux/kernel/git/djwong/xfs-linux:
  xfs: enforce one namespace per attribute
  xfs: refactor name/value iovec validation in xlog_recover_attri_commit_pass2
  xfs: refactor name/length checks in xfs_attri_validate
  xfs: use local variables for name and value length in _attri_commit_pass2
  xfs: always set args->value in xfs_attri_item_recover
  xfs: validate recovered name buffers when recovering xattr items
  xfs: use helpers to extract xattr op from opflags
  xfs: restructure xfs_attr_complete_op a bit
  xfs: check shortform attr entry flags specifically
  xfs: fix missing check for invalid attr flags
  xfs: check opcode and iovec count match in xlog_recover_attri_commit_pass2
  xfs: use an XFS_OPSTATE_ flag for detecting if logged xattrs are available
  xfs: require XFS_SB_FEAT_INCOMPAT_LOG_XATTRS for attr log intent item recovery
  xfs: attr fork iext must be loaded before calling xfs_attr_is_leaf