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fc29bfdf18
Summary: Also make it compatible with Windows by making it a no-op on Windows. Test Plan: `make local` and try from IPython: ``` In [1]: from hgext import patchrmdir In [2]: os.rmdir Out[2]: <function posix.rmdir> In [3]: patchrmdir.uisetup(None) In [4]: os.rmdir Out[4]: <functools.partial at 0x375f580> ``` Reviewers: durham, #mercurial Reviewed By: durham Subscribers: durham, fried Differential Revision: https://phabricator.intern.facebook.com/D6681125 Signature: 6681125:1515523144:e186b45978d4a82ec8a0d18a02b0a524fca1c3b3
68 lines
1.8 KiB
Cython
68 lines
1.8 KiB
Cython
# patchrmdir.py
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#
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# Copyright 2017 Facebook, Inc.
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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"""patch rmdir
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Check if a directory is empty before trying to call rmdir on it. This works
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around some kernel issues.
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Have no effect on Windows.
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"""
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IF UNAME_SYSNAME != "Windows":
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from mercurial import (
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extensions,
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pycompat,
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)
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import os
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import errno
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cdef extern from "dirent.h":
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ctypedef struct DIR
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struct dirent:
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pass
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DIR *opendir(const char *)
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dirent *readdir(DIR *)
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int closedir(DIR *)
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cdef int _countdir(const char *path):
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"""return min(3, the number of entries inside a directory).
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return -1 if the directory cannot be opened.
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"""
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cdef DIR *d = opendir(path)
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if d == NULL:
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return -1
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cdef dirent *e
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cdef int n = 0
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while True:
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e = readdir(d)
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if e == NULL:
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break
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else:
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n += 1
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if n > 2:
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break
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closedir(d)
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return n
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def _rmdir(orig, path):
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n = _countdir(path)
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if n >= 3:
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# The number 3 is because most systems have "." and "..". For systems
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# without them, we fallback to the original rmdir, the behavior should
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# still be correct.
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# Choose a slightly different error message other than "Directory not
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# empty" so the test could notice the difference.
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raise OSError(errno.ENOTEMPTY, 'Non-empty directory: %r' % path)
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else:
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return orig(path)
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def uisetup(ui):
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extensions.wrapfunction(os, 'rmdir', _rmdir)
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