1 files changed, 31 insertions, 0 deletions
diff --git a/support/support_stat_nanoseconds.c b/support/support_stat_nanoseconds.c
new file mode 100644
index 0000000000..c0d5b2c3a9
--- /dev/null
+++ b/support/support_stat_nanoseconds.c
@@ -0,0 +1,31 @@
+/* Check if stat supports nanosecond resolution.
+   Copyright (C) 2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <stdbool.h>
+
+bool
+support_stat_nanoseconds (void)
+{
+  /* s390 stat64 compat symbol does not support nanoseconds resolution
+     and it used on non-LFS [f,l]stat[at] implementations.  */
+#if defined __linux__ && !defined __s390x__ && defined __s390__
+  return false;
+#else
+  return true;
+#endif
+}