Issue #9993: When the source and destination are on different filesystems,
and the source is a symlink, shutil.move() now recreates a symlink on the
destination instead of copying the file contents.
Patch by Jonathan Niehof and Hynek Schlawack.
diff --git a/Lib/shutil.py b/Lib/shutil.py
index 95bebb8..5f69fb7 100644
--- a/Lib/shutil.py
+++ b/Lib/shutil.py
@@ -356,7 +356,10 @@
overwritten depending on os.rename() semantics.
If the destination is on our current filesystem, then rename() is used.
- Otherwise, src is copied to the destination and then removed.
+ Otherwise, src is copied to the destination and then removed. Symlinks are
+ recreated under the new name if os.rename() fails because of cross
+ filesystem renames.
+
A lot more could be done here... A look at a mv.c shows a lot of
the issues this implementation glosses over.
@@ -375,7 +378,11 @@
try:
os.rename(src, real_dst)
except OSError:
- if os.path.isdir(src):
+ if os.path.islink(src):
+ linkto = os.readlink(src)
+ os.symlink(linkto, real_dst)
+ os.unlink(src)
+ elif os.path.isdir(src):
if _destinsrc(src, dst):
raise Error("Cannot move a directory '%s' into itself '%s'." % (src, dst))
copytree(src, real_dst, symlinks=True)