From: Gregory P. Smith <greg@krypto.org>
Date: Sun, 27 Apr 2025 20:28:23 +0000 (-0700)
Subject: [tests] fix test_fcntl issue when run in a ChromeOS linux runtime (GH-133053)
X-Git-Tag: v3.14.0b1~258
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=355ee1a429e68602696d5a4a9966c1448af1c8d1;p=thirdparty%2FPython%2Fcpython.git

[tests] fix test_fcntl issue when run in a ChromeOS linux runtime (GH-133053)

* [tests] test_fcntl fails when run in a ChromeOS linux runtime container.

It doesn't appear to support F_NOTIFY? Detect the lack of that and skip the test.
---

diff --git a/Lib/test/test_fcntl.py b/Lib/test/test_fcntl.py
index bb784cbe2ce0..b84c98ef3a29 100644
--- a/Lib/test/test_fcntl.py
+++ b/Lib/test/test_fcntl.py
@@ -1,5 +1,6 @@
 """Test program for the fcntl C module.
 """
+import errno
 import multiprocessing
 import platform
 import os
@@ -135,16 +136,21 @@ class TestFcntl(unittest.TestCase):
         or platform.system() == "Android",
         "this platform returns EINVAL for F_NOTIFY DN_MULTISHOT")
     def test_fcntl_64_bit(self):
-        # Issue #1309352: fcntl shouldn't fail when the third arg fits in a
+        # Issue GH-42434: fcntl shouldn't fail when the third arg fits in a
         # C 'long' but not in a C 'int'.
         try:
             cmd = fcntl.F_NOTIFY
-            # This flag is larger than 2**31 in 64-bit builds
+            # DN_MULTISHOT is >= 2**31 in 64-bit builds
             flags = fcntl.DN_MULTISHOT
         except AttributeError:
             self.skipTest("F_NOTIFY or DN_MULTISHOT unavailable")
         fd = os.open(os.path.dirname(os.path.abspath(TESTFN)), os.O_RDONLY)
         try:
+            try:
+                fcntl.fcntl(fd, cmd, fcntl.DN_DELETE)
+            except OSError as exc:
+                if exc.errno == errno.EINVAL:
+                    self.skipTest("F_NOTIFY not available by this environment")
             fcntl.fcntl(fd, cmd, flags)
         finally:
             os.close(fd)