Index: libnautilus-private/nautilus-file-operations.c
===================================================================
--- libnautilus-private/nautilus-file-operations.c	(revision 14108)
+++ libnautilus-private/nautilus-file-operations.c	(working copy)
@@ -3224,6 +3224,24 @@
 	}
 }
 
+static gboolean
+g_file_is_parent (GFile *child, GFile *root)
+{
+    GFile *f;
+    
+    f = g_file_dup (child);
+    while (f) {
+	if (g_file_equal (f, root)) {
+	    g_object_unref (f);
+	    return TRUE;
+	}
+	f = g_file_get_parent (f);
+    }
+    
+    if (f)  g_object_unref (f);
+    return FALSE;
+}
+
 /* Debuting files is non-NULL only for toplevel items */
 static void
 copy_move_file (CopyMoveJob *copy_job,
@@ -3264,6 +3282,41 @@
 		dest = get_target_file (src, dest_dir, same_fs);
 	}
 
+
+	/* Don't allow recursive move/copy into itself.  
+         * (We would get a file system error if we proceeded but it is nicer to 
+         * detect and report it at this level) */
+	if (g_file_is_parent (dest_dir, src)) {
+		if (job->skip_all_error) {
+			g_error_free (error);
+			goto out;
+		}
+		
+		/*  the run_warning() frees all strings passed in automatically  */
+		primary = copy_job->is_move ? g_strdup (_("You cannot move a folder into itself."))
+					    : g_strdup (_("You cannot copy a folder into itself."));
+		secondary = g_strdup (_("The destination folder is inside the source folder."));
+		
+		response = run_warning (job,
+					primary,
+					secondary,
+					NULL,
+					GTK_STOCK_CANCEL, SKIP_ALL, SKIP,
+					NULL);
+
+		if (response == 0 || response == GTK_RESPONSE_DELETE_EVENT) {
+			abort_job (job);
+		} else if (response == 1) { /* skip all */
+			job->skip_all_error = TRUE;
+		} else if (response == 2) { /* skip */
+			/* do nothing */
+		} else {
+			g_assert_not_reached ();
+		}
+
+		goto out;
+	}
+	
  retry:
 	
 	error = NULL;
@@ -3791,6 +3844,41 @@
 	
 	dest = get_target_file (src, dest_dir, same_fs);
 
+
+	/* Don't allow recursive move/copy into itself.  
+         * (We would get a file system error if we proceeded but it is nicer to 
+         * detect and report it at this level) */
+	if (g_file_is_parent (dest_dir, src)) {
+		if (job->skip_all_error) {
+			g_error_free (error);
+			goto out;
+		}
+		
+		/*  the run_warning() frees all strings passed in automatically  */
+		primary = move_job->is_move ? g_strdup (_("You cannot move a folder into itself."))
+					    : g_strdup (_("You cannot copy a folder into itself."));
+		secondary = g_strdup (_("The destination folder is inside the source folder."));
+		
+		response = run_warning (job,
+					primary,
+					secondary,
+					NULL,
+					GTK_STOCK_CANCEL, SKIP_ALL, SKIP,
+					NULL);
+		
+		if (response == 0 || response == GTK_RESPONSE_DELETE_EVENT) {
+			abort_job (job);
+		} else if (response == 1) { /* skip all */
+			job->skip_all_error = TRUE;
+		} else if (response == 2) { /* skip */
+			/* do nothing */
+		} else {
+			g_assert_not_reached ();
+		}
+
+		goto out;
+	}
+
  retry:
 	
 	flags = G_FILE_COPY_NOFOLLOW_SYMLINKS | G_FILE_COPY_NO_FALLBACK_FOR_MOVE;
