From b22d2470ac3291614b7ab8a337e371bbb6a3b38b Mon Sep 17 00:00:00 2001
From: Niyaz Nigmatullin <niyaz.nigmatullin@gmail.com>
Date: Wed, 22 Jun 2022 19:55:26 +0300
Subject: [PATCH] uu_install: check for permission change on -C option

---
 src/uu/install/src/install.rs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/uu/install/src/install.rs b/src/uu/install/src/install.rs
index bd853e26c..a9b03eb34 100644
--- a/src/uu/install/src/install.rs
+++ b/src/uu/install/src/install.rs
@@ -757,6 +757,8 @@ fn need_copy(from: &Path, to: &Path, b: &Behavior) -> UResult<bool> {
 
     // setuid || setgid || sticky
     let extra_mode: u32 = 0o7000;
+    // setuid || setgid || sticky || permissions
+    let all_modes: u32 = 0o7777;
 
     if b.specified_mode.unwrap_or(0) & extra_mode != 0
         || from_meta.mode() & extra_mode != 0
@@ -764,6 +766,9 @@ fn need_copy(from: &Path, to: &Path, b: &Behavior) -> UResult<bool> {
     {
         return Ok(true);
     }
+    if b.mode() != to_meta.mode() & all_modes {
+        return Ok(true);
+    }
 
     if !from_meta.is_file() || !to_meta.is_file() {
         return Ok(true);