cp: Avoid other error at cp stream /dev/full (#10139)

Co-authored-by: oech3 <>

Author: sylvestre

src/uu/cp/src/platform/linux.rs

@@ -251,7 +251,7 @@ where
     }
 
     let num_bytes_copied = buf_copy::copy_stream(&mut src_file, &mut dst_file)
-        .map_err(|_| std::io::Error::from(std::io::ErrorKind::Other))?;
+        .map_err(|e| std::io::Error::other(format!("{e}")))?;
 
     Ok(num_bytes_copied)
 }

tests/by-util/test_cp.rs

@@ -88,6 +88,16 @@ macro_rules! assert_metadata_eq {
     }};
 }
 
+#[test]
+#[cfg(target_os = "linux")]
+fn test_cp_stream_to_full() {
+    let (_, mut ucmd) = at_and_ucmd!();
+    ucmd.arg("/dev/zero")
+        .arg("/dev/full")
+        .fails()
+        .stderr_contains("No space");
+}
+
 #[test]
 fn test_cp_cp() {
     let (at, mut ucmd) = at_and_ucmd!();