Merge branch 'main' into fix-issue-81340

python · zooba · Feb 3, 2025 · May 23, 2022 · May 23, 2022 · May 24, 2022
commit 184689516b8895b966aa1c9b798cbe19f3b454e4
@@ -47,7 +47,8 @@
 COPY_BUFSIZE = 1024 * 1024 if _WINDOWS else 64 * 1024
 # This should never be removed, see rationale in:
 # https://bugs.python.org/issue43743#msg393429
-_USE_CP_SENDFILE = hasattr(os, "sendfile") and sys.platform.startswith("linux")
+_USE_CP_SENDFILE = (hasattr(os, "sendfile")
+                    and sys.platform.startswith(("linux", "android")))
 _USE_CP_COPY_FILE_RANGE = hasattr(os, "copy_file_range")
 _HAS_FCOPYFILE = posix and hasattr(posix, "_fcopyfile")  # macOS
 
@@ -497,6 +498,29 @@ def copy2(src, dst, *, follow_symlinks=True, allow_reflink=True):
     """
     if os.path.isdir(dst):
         dst = os.path.join(dst, os.path.basename(src))
+
+    if hasattr(_winapi, "CopyFile2"):
+        src_ = os.fsdecode(src)
+        dst_ = os.fsdecode(dst)
+        flags = _winapi.COPY_FILE_ALLOW_DECRYPTED_DESTINATION # for compat
+        if not follow_symlinks:
+            flags |= _winapi.COPY_FILE_COPY_SYMLINK
+        try:
+            _winapi.CopyFile2(src_, dst_, flags)
+            return dst
+        except OSError as exc:
+            if (exc.winerror == _winapi.ERROR_PRIVILEGE_NOT_HELD
+                and not follow_symlinks):
+                # Likely encountered a symlink we aren't allowed to create.
+                # Fall back on the old code
+                pass
+            elif exc.winerror == _winapi.ERROR_ACCESS_DENIED:
+                # Possibly encountered a hidden or readonly file we can't
+                # overwrite. Fall back on old code
+                pass
+            else:
+                raise
+
     copyfile(src, dst, follow_symlinks=follow_symlinks, allow_reflink=allow_reflink)
     copystat(src, dst, follow_symlinks=follow_symlinks)
     return dst