Add posix.fdlistdir

[rosslagerwall]

BPO	10755
Nosy	@loewis, @pitrou, @tiran, @benjaminp, @durban, @anacrolix
Files	i_fdlistdir.patch: Patch to add posix.fdlistdir i10755.patch: Updated patch

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = <Date 2011-02-25.23:41:43.489>
created_at = <Date 2010-12-22.07:26:12.190>
labels = ['extension-modules', 'type-feature']
title = 'Add posix.fdlistdir'
updated_at = <Date 2011-02-25.23:41:43.487>
user = 'https://bugs.python.org/rosslagerwall'

bugs.python.org fields:

activity = <Date 2011-02-25.23:41:43.487>
actor = 'pitrou'
assignee = 'none'
closed = True
closed_date = <Date 2011-02-25.23:41:43.489>
closer = 'pitrou'
components = ['Extension Modules']
creation = <Date 2010-12-22.07:26:12.190>
creator = 'rosslagerwall'
dependencies = []
files = ['20136', '20145']
hgrepos = []
issue_num = 10755
keywords = ['patch']
message_count = 5.0
messages = ['124489', '124491', '124493', '124538', '129471']
nosy_count = 8.0
nosy_names = ['loewis', 'pitrou', 'christian.heimes', 'benjamin.peterson', 'daniel.urban', 'anacrolix', 'Chris.Gerhard', 'rosslagerwall']
pr_nums = []
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue10755'
versions = ['Python 3.3']

[rosslagerwall]

Along with bpo-4761, the *at wrappers, it would be nice to have a patch adding the use of fdopendir.

This patch adds a function fdlistdir, a unittest and documentation.

[loewis]

What's the use case for this function?

[rosslagerwall]

When maintaining an fd to implement a per thread current directory, you can use it to get a list of files in the directory.

For security reasons, instead of a named path, you can keep an fd to a directory so that if the path is changed externally while performing an operation, the open fd still points to the original directory. This function then allows you to list the contents of that fd. I think this is needed for bpo-4489.

[rosslagerwall]

Hi,

Attached is a slightly updated patch that improves doc and changes fdlistdir to always return strings, not bytes.

[pitrou]

Committed in r88625. Thank you!