--- contrib/python/psutil/py3/psutil/_pslinux.py	(index)
+++ contrib/python/psutil/py3/psutil/_pslinux.py	(working tree)
@@ -322,7 +322,10 @@ try:
 except ImportError:
     import ctypes
 
-    libc = ctypes.CDLL(None, use_errno=True)
+    try:
+        libc = ctypes.CDLL(None, use_errno=True)
+    except:
+        libc = None
 
     if hasattr(libc, "prlimit"):
 
--- contrib/python/psutil/py3/psutil/arch/windows/disk.c	(index)
+++ contrib/python/psutil/py3/psutil/arch/windows/disk.c	(working tree)
@@ -7,6 +7,7 @@
 #include <Python.h>
 #include <windows.h>
 #include <tchar.h>
+#include <winioctl.h>
 
 #include "../../_psutil_common.h"