1 files changed, 31 insertions, 1 deletions
diff --git a/win/wb.py b/win/wb.py
index 7c2c8b9..8e23684 100644
--- a/win/wb.py
+++ b/win/wb.py
@@ -1,7 +1,7 @@
 # Python module containing general build functions
 # for OpenVPN on Windows
 
-import os, re, shutil
+import os, re, shutil, stat
 
 autogen = "Automatically generated by OpenVPN Windows build system"
 
@@ -182,4 +182,34 @@ def cp(src, dest, dest_is_dir=True):
     print "COPY %s %s" % (src, dest)
     shutil.copyfile(src, dest)
 
+def rm_rf(path):
+    try:
+        shutil.rmtree(path, onerror=onerror)
+    except:
+        pass
+
+def onerror(func, path, exc_info):
+    """
+    Error handler for ``shutil.rmtree``.
+
+    If the error is due to an access error (read only file)
+    it attempts to add write permission and then retries.
+
+    If the error is for another reason it re-raises the error.
+
+    Usage : ``shutil.rmtree(path, onerror=onerror)``
+    """
+    if not os.access(path, os.W_OK):
+        # Is the error an access error ?
+        os.chmod(path, stat.S_IWUSR)
+        func(path)
+    else:
+        raise
+
+def mkdir_silent(dir):
+    try:
+        os.mkdir(dir)
+    except:
+        pass
+
 config = get_config()