Use Linux' O_TMPFILE for tmpfiles #2

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1. untitaker

   added

   enhancement

   on Feb 6, 2015
2. untitaker

   changed the title [-]Use Linux' API for tmpfiles[/-] [+]Use Linux' O_TMPFILE for tmpfiles[/+] on Feb 6, 2015
3. untitaker commented on Feb 6, 2015

   

   untitaker

   on Feb 6, 2015

   OwnerAuthor

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   Unsure how to call linkat in Python.
4. AndCycle commented on Apr 28, 2016

   

   AndCycle

   on Apr 28, 2016

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   https://docs.python.org/3/library/os.html#os.O_TMPFILE
5. jwilk commented on Jul 15, 2016

   

   jwilk

   on Jul 15, 2016

   Contributor

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   Something like this seems to work since Python 3.4:

   import os
   fd = os.open('.', os.O_TMPFILE | os.O_RDWR)
   path = '/proc/self/fd/{0}'.format(fd)
   os.link(path, 'spam', src_dir_fd=0, follow_symlinks=True)
6. untitaker commented on Jul 28, 2016

   

   untitaker

   on Jul 28, 2016

   OwnerAuthor

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   @jwilk That doesn't seem particularly performant or elegant though. It seems that there is a package on PyPI that provides bindings for this call, however, that would be quite a microdependency.
7. earonesty commented on Dec 6, 2017

   

   earonesty

   on Dec 6, 2017

   Last edited by earonesty

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   AFAICT NamedTemporaryFile already sets this flag
8. jwilk commented on Dec 6, 2017

   

   jwilk

   on Dec 6, 2017

   Contributor

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   I think you meant (unnamed) TemporaryFile, which indeed tries to use O_TMPFILE since Python 3.5:
   https://bugs.python.org/issue21515