selinux: adjust more error messages

src/uu/chcon/src/chcon.rs

@@ -608,7 +608,7 @@ fn process_file(
     if result.is_ok() {
         if options.verbose {
             println!(
-                "{}: Changing security context of: {}",
+                "{}: changing security context of {}",
                 uucore::util_name(),
                 file_full_name.quote()
             );

src/uu/cp/src/cp.rs

@@ -1710,7 +1710,7 @@ pub(crate) fn copy_attributes(
             if let Some(context) = context {
                 if let Err(e) = context.set_for_path(dest, false, false) {
                     return Err(Error::Error(format!(
-                        "failed to set security context for {}: {e}",
+                        "failed to set the security context of {}: {e}",
                         dest.display()
                     )));
                 }

src/uu/mkfifo/src/mkfifo.rs

@@ -74,10 +74,7 @@ pub fn uumain(args: impl uucore::Args) -> UResult<()> {
                     uucore::selinux::set_selinux_security_context(Path::new(&f), context)
                 {
                     let _ = fs::remove_file(f);
-                    return Err(USimpleError::new(
-                        1,
-                        format!("failed to set SELinux security context: {e}"),
-                    ));
+                    return Err(USimpleError::new(1, e.to_string()));
                 }
             }
         }

src/uu/mknod/src/mknod.rs

@@ -98,7 +98,7 @@ fn mknod(file_name: &str, config: Config) -> i32 {
             ) {
                 // if it fails, delete the file
                 let _ = std::fs::remove_dir(file_name);
-                eprintln!("failed to set SELinux security context: {}", e);
+                eprintln!("{}: {}", uucore::util_name(), e);
                 return 1;
             }
         }

tests/by-util/test_cp.rs

@@ -6315,7 +6315,7 @@ fn test_cp_selinux_invalid() {
             .arg(TEST_HELLO_WORLD_SOURCE)
             .arg(TEST_HELLO_WORLD_DEST)
             .fails()
-            .stderr_contains("Failed to");
+            .stderr_contains("failed to");
         if at.file_exists(TEST_HELLO_WORLD_DEST) {
             at.remove(TEST_HELLO_WORLD_DEST);
         }

tests/by-util/test_mkdir.rs

@@ -411,7 +411,7 @@ fn test_selinux_invalid() {
         .arg(at.plus_as_string(dest))
         .fails()
         .no_stdout()
-        .stderr_contains("Failed to set default file creation context to 'testtest':");
+        .stderr_contains("failed to set default file creation context to 'testtest':");
     // invalid context, so, no directory
     assert!(!at.dir_exists(dest));
 }

util/build-gnu.sh

@@ -347,3 +347,10 @@ sed -i 's/not supported/unexpected argument/' tests/mv/mv-exchange.sh
 # /nix/store/xxxxxxxxxxxx...xxxx/bin/tr
 # We just replace the references to `/usr/bin/tr` with the result of `$(which tr)`
 sed -i  's/\/usr\/bin\/tr/$(which tr)/' tests/init.sh
+
+# upstream doesn't having the program name in the error message
+# but we do. We should keep it that way.
+sed -i 's/echo "changing security context/echo "chcon: changing security context/' tests/chcon/chcon.sh
+
+# we produce a different error message
+sed -i -e "s|-e 's/ Not supported$//'|-e 's/ context_new() failed$//'|g" tests/mkdir/selinux.sh