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gh-133562: Skip security descriptors on unsupported Windows API partitions (GH-133563)

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Max Bachmann 2025-05-14 13:34:41 +02:00 • committed by GitHub
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Misc/NEWS.d/next/Windows/2025-05-07-09-02-19.gh-issue-133562.lqqNW1.rst Normal file
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@ -0,0 +1 @@
Disable handling of security descriptors by :func:`os.mkdir` with mode ``0o700`` on WinAPI partitions that do not support it. This only affects custom builds for specialized targets.

4
Modules/posixmodule.c
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@ -5736,6 +5736,9 @@ os_mkdir_impl(PyObject *module, path_t *path, int mode, int dir_fd)
#ifdef MS_WINDOWS
Py_BEGIN_ALLOW_THREADS
// For API sets that don't support these APIs, we have no choice
// but to silently create a directory with default ACL.
#if defined(MS_WINDOWS_APP) || defined(MS_WINDOWS_SYSTEM)
if (mode == 0700 /* 0o700 */) {
ULONG sdSize;
pSecAttr = &secAttr;
@ -5751,6 +5754,7 @@ os_mkdir_impl(PyObject *module, path_t *path, int mode, int dir_fd)
error = GetLastError();
}
}
#endif
if (!error) {
result = CreateDirectoryW(path->wide, pSecAttr);
if (secAttr.lpSecurityDescriptor &&