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GH-118447: Fix handling of unreadable symlinks in os.path.realpath() (#118489)

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Co-authored-by: Nice Zombies <nineteendo19d0@gmail.com>
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Barney Gale 2024-05-18 23:40:51 +01:00 • committed by GitHub
parent 30b4e9f9c4
commit caf6064a1b
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3 changed files with 32 additions and 13 deletions
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17
Lib/test/test_posixpath.py
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@ -660,6 +660,23 @@ class PosixPathTest(unittest.TestCase):
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")
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)
with self.assertRaises(PermissionError):
realpath(ABSTFN, strict=True)
finally:
os.chmod(ABSTFN, 0o755, follow_symlinks=False)
os.unlink(ABSTFN)
def test_relpath(self):
(real_getcwd, os.getcwd) = (os.getcwd, lambda: r"/home/user/bar")
try: