Do not call chmod/chown on files for which nothing would be changed.

1 files changed, 7 insertions, 0 deletions

diff --git a/perm_offset.py b/perm_offset.py
index 20305ad..189728c 100755
--- a/perm_offset.py
+++ b/perm_offset.py
@@ -9,12 +9,19 @@ import sys
 def remap_file(fpath, src, dst, count, dry_run):
     stat = os.lstat(fpath)
 
+    do_remap = False
+
     uid = stat.st_uid
     if uid >= src and uid < src + count:
         uid += dst - src
+        do_remap = True
     gid = stat.st_gid
     if gid >= src and gid < src + count:
         gid += dst - src
+        do_remap = True
+
+    if not do_remap:
+        return
 
     mode = S_IMODE(stat.st_mode)