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[3.11] gh-135034: Normalize link targets in tarfile, add os.path.realpath(strict='allow_missing') (GH-135037) #135068

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Merged
ambv merged 8 commits into from
Jun 3, 2025
Merged

[3.11] gh-135034: Normalize link targets in tarfile, add os.path.realpath(strict='allow_missing') (GH-135037) #135068

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371b4ea
[3.11] gh-135034: Normalize link targets in tarfile, add `os.path.rea…
ambv Jun 3, 2025
698a6d4
Fix test failure in test_tarfile, remove tests that aren't suitable for
Yhg1s Jun 3, 2025
3196554
Fix a few tests, and a glaring logic error in the posixpath backport.
Yhg1s Jun 3, 2025
8ab383f
Stop using :cve:, which doesn't work in 3.11 and earlier.
Yhg1s Jun 3, 2025
6d4d4d6
Fix test_tarfile (for not exporting LinkFallbackError) and remove the
Yhg1s Jun 3, 2025
630ffa3
Fix Windows test_ntpath failures.
Yhg1s Jun 3, 2025
28d8d22
Fix merge error in backport.
Yhg1s Jun 3, 2025
92a788a
Remove backport of a test that won't pass under 3.11.
Yhg1s Jun 3, 2025
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Fix test_tarfile (for not exporting LinkFallbackError) and remove the 
non-strict test for unreadable symlinks, whch isn't supported before 3.13.
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@Yhg1s
Yhg1s committed Jun 3, 2025
commit 6d4d4d63d36646ab5791c8999ed33912ee164c9d
16 changes: 0 additions & 16 deletions Lib/test/test_posixpath.py
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Original file line number Diff line number Diff line change
Expand Up @@ -739,22 +739,6 @@ def test_realpath_resolve_first(self, kwargs):
safe_rmdir(ABSTFN + "/k")
safe_rmdir(ABSTFN)

@os_helper.skip_unless_symlink
@skip_if_ABSTFN_contains_backslash
@unittest.skipIf(os.chmod not in os.supports_follow_symlinks, "Can't set symlink permissions")
@unittest.skipIf(sys.platform != "darwin", "only macOS requires read permission to readlink()")
def test_realpath_unreadable_symlink(self):
try:
os.symlink(ABSTFN+"1", ABSTFN)
os.chmod(ABSTFN, 0o000, follow_symlinks=False)
self.assertEqual(realpath(ABSTFN), ABSTFN)
self.assertEqual(realpath(ABSTFN + '/foo'), ABSTFN + '/foo')
self.assertEqual(realpath(ABSTFN + '/../foo'), dirname(ABSTFN) + '/foo')
self.assertEqual(realpath(ABSTFN + '/foo/..'), ABSTFN)
finally:
os.chmod(ABSTFN, 0o755, follow_symlinks=False)
os_helper.unlink(ABSTFN)

@os_helper.skip_unless_symlink
@skip_if_ABSTFN_contains_backslash
@unittest.skipIf(os.chmod not in os.supports_follow_symlinks, "Can't set symlink permissions")
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2 changes: 1 addition & 1 deletion Lib/test/test_tarfile.py
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Expand Up @@ -2533,7 +2533,7 @@ def test__all__(self):
"fully_trusted_filter", "data_filter",
"tar_filter", "FilterError", "AbsoluteLinkError",
"OutsideDestinationError", "SpecialFileError", "AbsolutePathError",
"LinkOutsideDestinationError",
"LinkOutsideDestinationError", "LinkFallbackError",
}
support.check__all__(self, tarfile, not_exported=not_exported)

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