David-Sarah Hopwood <david-sa...@jacaranda.org> added the comment:
Don't use win32file.GetDiskFreeSpace; the underlying Windows API only supports
drives up to 2 GB
(http://blogs.msdn.com/b/oldnewthing/archive/2007/11/01/5807020.aspx). Use
GetFreeDiskSpaceEx, as the code I linked to does.
I'm not sure it makes sense to provide an exact clone of os.statvfs, since some
of the statvfs fields don't have equivalents that are obtainable by any Windows
API as far as I know. What <em>would</em> make sense is a cross-platform way to
get total disk space, and the space free for root/Administrator and for the
current user. This would actually be somewhat easier to use on Unix as well.
Anyway, here's some code for Windows that only uses ctypes (whichdir should be
Unicode):
from ctypes import WINFUNCTYPE, windll, POINTER, byref, c_ulonglong
from ctypes.wintypes import BOOL, DWORD, LPCWSTR
# <http://msdn.microsoft.com/en-us/library/aa383742%28v=VS.85%29.aspx>
PULARGE_INTEGER = POINTER(c_ulonglong)
# <http://msdn.microsoft.com/en-us/library/aa364937%28VS.85%29.aspx>
GetDiskFreeSpaceExW = WINFUNCTYPE(BOOL, LPCWSTR, PULARGE_INTEGER,
PULARGE_INTEGER, PULARGE_INTEGER)(
("GetDiskFreeSpaceExW", windll.kernel32))
# <http://msdn.microsoft.com/en-us/library/ms679360%28v=VS.85%29.aspx>
GetLastError = WINFUNCTYPE(DWORD)(("GetLastError", windll.kernel32))
# (This might put up an error dialog unless
# SetErrorMode(SEM_FAILCRITICALERRORS | SEM_NOOPENFILEERRORBOX)
# has been called.)
n_free_for_user = c_ulonglong(0)
n_total = c_ulonglong(0)
n_free = c_ulonglong(0)
retval = GetDiskFreeSpaceExW(whichdir,
byref(n_free_for_user),
byref(n_total),
byref(n_free))
if retval == 0:
raise OSError("Windows error %d attempting to get disk statistics for
%r"
% (GetLastError(), whichdir))
free_for_user = n_free_for_user.value
total = n_total.value
free = n_free.value
----------
versions: +Python 2.7, Python 3.3 -Python 2.6
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<http://bugs.python.org/issue410547>
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