cp: Add test for recursively copying a source directory with an inval…

…id UTF-8 path.

src/uu/cp/src/copydir.rs

@@ -122,17 +122,18 @@ impl<'a> Context<'a> {
         let current_dir = env::current_dir()?;
         let root_path = current_dir.join(root);
         let target_is_file = target.is_file();
-        let root_parent = if target.exists() && !root.as_os_str().as_encoded_bytes().ends_with(b"/.") {
-            root_path.parent().map(ToOwned::to_owned)
-        } else if root == Path::new(".") && target.is_dir() {
-            // Special case: when copying current directory (.) to an existing directory,
-            // we don't want to use the parent path as root_parent because we want to
-            // copy the contents of the current directory directly into the target directory,
-            // not create a subdirectory with the current directory's name.
-            None
-        } else {
-            Some(root_path)
-        };
+        let root_parent =
+            if target.exists() && !root.as_os_str().as_encoded_bytes().ends_with(b"/.") {
+                root_path.parent().map(ToOwned::to_owned)
+            } else if root == Path::new(".") && target.is_dir() {
+                // Special case: when copying current directory (.) to an existing directory,
+                // we don't want to use the parent path as root_parent because we want to
+                // copy the contents of the current directory directly into the target directory,
+                // not create a subdirectory with the current directory's name.
+                None
+            } else {
+                Some(root_path)
+            };
         Ok(Self {
             current_dir,
             root_parent,

tests/by-util/test_cp.rs

@@ -7708,3 +7708,22 @@ fn test_cp_preserve_context_with_z_fails() {
         .fails()
         .stderr_contains("cannot combine");
 }
+
+#[test]
+#[cfg(all(unix, not(target_os = "macos")))]
+fn test_cp_recursive_non_utf8_source() {
+    use std::{ffi::OsStr, os::unix::ffi::OsStrExt};
+    let (at, mut ucmd) = at_and_ucmd!();
+
+    at.mkdir(OsStr::from_bytes(b"dir\x80"));
+    at.mkdir("dir2");
+    at.touch(OsStr::from_bytes(b"dir\x80/a"));
+
+    ucmd.arg("-r")
+        .arg(OsStr::from_bytes(b"dir\x80/."))
+        .arg("dir2")
+        .succeeds()
+        .no_output();
+
+    assert!(at.plus("dir2").join("a").exists());
+}