[issue47027] subprocess.run(), subprocess.Popen() should accept file descriptor as cwd parameter

[Gregory P. Smith]

Gregory P. Smith <greg at krypto.org> added the comment:

Basically you want it to call fchdir() instead of chdir() when passed a fd (integer) instead of a string/Path-like.  That makes sense and should be a reasonably straight forward set of changes to _posixsubprocess.c.

(A way to convert a fd into a Path-like object would _not_ work as that'd reintroduce the TOCTOU on the directory - that'd be a pathlib feature request anyways, not a subprocess one)

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stage:  -> needs patch
versions: +Python 3.11 -Python 3.10, Python 3.9

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