netbsd: xattr support

[ThomasWaldmann]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 8.33333% with 11 lines in your changes missing coverage. Please review.
✅ Project coverage is 80.98%. Comparing base (1589489) to head (52df4ad).
⚠️ Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
src/borg/platform/__init__.py	9.09%	10 Missing ⚠️
src/borg/xattr.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #9169      +/-   ##
==========================================
- Coverage   81.03%   80.98%   -0.05%     
==========================================
  Files          77       77              
  Lines       13627    13637      +10     
  Branches     2039     2040       +1     
==========================================
+ Hits        11042    11044       +2     
- Misses       1912     1920       +8     
  Partials      673      673              

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[ThomasWaldmann]

Strange: /home/runner/work/borg/borg/src/borg/archiver: extended stat (xattrs): [Errno 45] Operation not supported: '<FD 15>'

get_all should catch that.