From bf62039ea856dbe462966eeaf2039dbdde615e93 Mon Sep 17 00:00:00 2001
From: Anton Khirnov <anton@khirnov.net>
Date: Tue, 10 Oct 2023 11:16:49 +0200
Subject: Do not call chmod/chown on files for which nothing would be changed.

---
 perm_offset.py | 7 +++++++
 1 file changed, 7 insertions(+)

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)
 
-- 
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