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gh-136156: Allow using linkat() with TemporaryFile #136281

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Merged
merged 2 commits into from
Jul 8, 2025
Merged

gh-136156: Allow using linkat() with TemporaryFile #136281

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gh-136156: Allow using linkat() with TemporaryFile
vstinner Jul 4, 2025
c912963
Add test
vstinner Jul 8, 2025
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2 changes: 1 addition & 1 deletion Lib/tempfile.py
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Original file line number Diff line number Diff line change
Expand Up @@ -656,7 +656,7 @@ def TemporaryFile(mode='w+b', buffering=-1, encoding=None,
fd = None
def opener(*args):
nonlocal fd
flags2 = (flags | _os.O_TMPFILE) & ~_os.O_CREAT
flags2 = (flags | _os.O_TMPFILE) & ~_os.O_CREAT & ~_os.O_EXCL
fd = _os.open(dir, flags2, 0o600)
return fd
try:
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3 changes: 3 additions & 0 deletions Misc/NEWS.d/next/Library/2025-07-04-12-53-02.gh-issue-136156.OYlXoz.rst
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@@ -0,0 +1,3 @@
:func:`tempfile.TemporaryFile` no longer uses :data:`os.O_EXCL` with
:data:`os.O_TMPFILE`, so it's possible to use ``linkat()`` on the file
descriptor. Patch by Victor Stinner.
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