gh-99547: Add isjunction methods for checking if a path is a junction (GH-99548)

1 files changed, 6 insertions, 19 deletions

diff --git a/Lib/shutil.py b/Lib/shutil.py
index f5687e3..f372406 100644
--- a/Lib/shutil.py
+++ b/Lib/shutil.py
@@ -565,18 +565,6 @@ def copytree(src, dst, symlinks=False, ignore=None, copy_function=copy2,
                      dirs_exist_ok=dirs_exist_ok)
 
 if hasattr(os.stat_result, 'st_file_attributes'):
-    # Special handling for directory junctions to make them behave like
-    # symlinks for shutil.rmtree, since in general they do not appear as
-    # regular links.
-    def _rmtree_isdir(entry):
-        try:
-            st = entry.stat(follow_symlinks=False)
-            return (stat.S_ISDIR(st.st_mode) and not
-                (st.st_file_attributes & stat.FILE_ATTRIBUTE_REPARSE_POINT
-                 and st.st_reparse_tag == stat.IO_REPARSE_TAG_MOUNT_POINT))
-        except OSError:
-            return False
-
     def _rmtree_islink(path):
         try:
             st = os.lstat(path)
@@ -586,12 +574,6 @@ if hasattr(os.stat_result, 'st_file_attributes'):
         except OSError:
             return False
 else:
-    def _rmtree_isdir(entry):
-        try:
-            return entry.is_dir(follow_symlinks=False)
-        except OSError:
-            return False
-
     def _rmtree_islink(path):
         return os.path.islink(path)
 
@@ -605,7 +587,12 @@ def _rmtree_unsafe(path, onerror):
         entries = []
     for entry in entries:
         fullname = entry.path
-        if _rmtree_isdir(entry):
+        try:
+            is_dir = entry.is_dir(follow_symlinks=False)
+        except OSError:
+            is_dir = False
+
+        if is_dir and not entry.is_junction():
             try:
                 if entry.is_symlink():
                     # This can only happen if someone replaces