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[Python-Dev] Strange umask(?)/st_mode issue
Nathaniel Smithnjs at vorpus.org
Fri Mar 29 20:31:18 EDT 2019
That does sound strange. How easily can you reproduce it? That majorlyeffects how I would try to debug something like this...If you're able to get an strace of a failed run then that would probablytell us a *lot*.On Fri, Mar 29, 2019, 16:28 Steve Dower <steve.dower at python.org> wrote:> Hi>> I'm trying to track down the cause of the failed Linux tests on this> build (it's also been happening on random PR builds for the last day or> two, but this is the first I've seen it happen on already merged code):>>https://dev.azure.com/Python/cpython/_build/results?buildId=40189>> One of the failed tests is this one from test_tarfile.py (and I think> this is representative of the others):>> def test_file_mode(self):> # Test for issue #8464: Create files with correct> # permissions.> if os.path.exists(tmpname):> support.unlink(tmpname)>> original_umask = os.umask(0o022)> try:> tar = tarfile.open(tmpname, self.mode)> tar.close()> mode = os.stat(tmpname).st_mode & 0o777> self.assertEqual(mode, 0o644, "wrong file permissions")> finally:> os.umask(original_umask)>> It's failing because the mode of the new TAR file is 0o666 rather than> 0o644. I'd guess that this means the umask() call is not having effect?> But honestly this is beyond me - I don't have any idea what would cause> Python to ignore that, and I don't see anything in the commit history> that could be at fault.>> I'm hoping someone can tell me that it's definitely a platform> configuration issue or it's definitely interference between two of our> tests (which run in random order, which would explain the intermittent> nature of this, but I haven't spotted any tests that seem likely either).>> To see the other failed PR builds, the full list is at>https://dev.azure.com/Python/cpython/_build?definitionId=9 and most of> the ones from today have failed because of whatever is causing it.>> Any help?>> Thanks,> Steve> _______________________________________________> Python-Dev mailing list>Python-Dev at python.org>https://mail.python.org/mailman/listinfo/python-dev> Unsubscribe:>https://mail.python.org/mailman/options/python-dev/njs%40pobox.com>-------------- next part --------------An HTML attachment was scrubbed...URL: <http://mail.python.org/pipermail/python-dev/attachments/20190329/3ad6d3a5/attachment.html>
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