Igor Pashev added the comment:
errno is 25 (#define ENOTTY 25 /* Inappropriate ioctl for device */)
It does not make sense to me to call unworkable ioctl() each time before other
methods :-)
I would consider adding a configure check for working ioctl() (but it won't
work for cross
STINNER Victor added the comment:
I propose to only call ioctl() once, and then remember (in a static
variable) that it doesn't work and then always call fcntl().
I can work on a patch.
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New submission from Igor Pashev:
I've found on illumos-based OS that under some conditions python is unable to
open any files because set_inheritable() fails. This happens even when building
python when it cannot find (open) _sysconfigdata.py.
The problem is that set_inheritable() first
Changes by Antoine Pitrou pit...@free.fr:
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nosy: +haypo
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http://bugs.python.org/issue22258
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STINNER Victor added the comment:
The patch doesn't look correct. Ioctl() reduces the overhead in term of
syscalls (1 vs 2).
What is the errno value on failure? We should remember that ioctl() doesn't
work and fallback to fcntl(). It would be more portable. Similar check is
already done for
