Rather than wrapping the C _isdir function in a Python function,
just import the C _isdir function directly. Additionally, add in the
docstring which was left out.
By changing to the Windows GetFileAttributes API in nt._isdir we can figure
out if the path is a directory without opening the file via os.stat. This has
the minor benefit of speeding up os.path.isdir by at least 2x for regular
files and 10-15x improvements were seen on symbolic links (which opened the
file multiple times during os.stat). Since os.path.isdir is used in
several places on interpreter startup, we get a minor speedup in startup time.
By changing to the Windows GetFileAttributes API in nt._isdir we can figure
out if the path is a directory without opening the file via os.stat. This has
the minor benefit of speeding up os.path.isdir by at least 2x for regular
files and 10-15x improvements were seen on symbolic links (which opened the
file multiple times during os.stat). Since os.path.isdir is used in
several places on interpreter startup, we get a minor speedup in startup time.
svn+ssh://pythondev@svn.python.org/python/branches/py3k
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r88111 | antoine.pitrou | 2011-01-19 16:21:35 +0100 (mer., 19 janv. 2011) | 4 lines
Issue #10898: Allow compiling the posix module when the C library defines
a symbol named FSTAT.
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svn+ssh://pythondev@svn.python.org/python/branches/py3k
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r87802 | antoine.pitrou | 2011-01-06 19:25:55 +0100 (jeu., 06 janv. 2011) | 6 lines
Issue #7858: Raise an error properly when os.utime() fails under Windows
on an existing file.
(this does not seem to be easily testable)
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svn+ssh://pythondev@svn.python.org/python/branches/py3k
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r87666 | amaury.forgeotdarc | 2011-01-03 01:19:11 +0100 (lun., 03 janv. 2011) | 4 lines
#8278: In the Windows implementation of stat() and utime(),
use time_t instead of int. This gives support for dates after 2038,
at least when compiled with VS2003 or later, where time_t is 64bit.
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In order to create symlinks on Windows, SeCreateSymbolicLinkPrivilege
is an account privilege that is required to be held by the user. Not only
must the privilege be enabled for the account, the activated privileges for
the currently running application must be adjusted to enable the requested
privilege.
Rather than exposing an additional function to be called prior to the user's
first os.symlink call, we handle the AdjustTokenPrivileges Windows API call
internally and only expose os.symlink when the privilege escalation was
successful.
Due to the change of only exposing os.symlink when it's available, we can
go back to the original test skipping methods of checking via `hasattr`.
Amaury noticed that this was originally written in a way that would fail on
names that can't be encoded with the mbcs codec. Restructured the function
to work with wide names first then narrow names second, to fall in line
with the way other functions are written in posixmodule.c.
Additionally, the st_ino attribute of stat structures was not being filled
in. This was left out of the fix to #10027 and was noticed due to
test_tarfile failing when applying the patch for this issue. An earlier
version of the fix to #10027 included st_ino, but that attribute got lost
in the shuffle of a few review/fix cycles. All tests pass.
