[issue21515] Use Linux O_TMPFILE flag in tempfile.TemporaryFile?

[WGH]

WGH <wgh at torlan.ru> added the comment:

> My patch uses O_EXCL. It makes possible to use linkat() to create a path for the temporary file (I didn't try it, but I read that it's possible). I don't know if using O_EXCL should be the default.

I think it is the other way around. From the manual: "If O_EXCL is not specified, then linkat(2) can ..."

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nosy: +WGH

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