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dd34889d43
Summary: With this change `hg rm` works even with extensions enabled. Since this is a Cython extension, I did not bother adding type annotations since IIUC Pyre cannot type check Cython files. Reviewed By: quark-zju Differential Revision: D19652178 fbshipit-source-id: 2e03a0f241f80732bdae3f472a1e0576684b1911
69 lines
1.8 KiB
Cython
69 lines
1.8 KiB
Cython
# Copyright (c) Facebook, Inc. and its affiliates.
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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.
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# cython: language_level=3str
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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 edenscm.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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path = pycompat.encodeutf8(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, b'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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