1 files changed, 45 insertions, 0 deletions
diff --git a/support/support_format_herrno.c b/support/support_format_herrno.c
new file mode 100644
index 0000000000..42279f6b9d
--- /dev/null
+++ b/support/support_format_herrno.c
@@ -0,0 +1,45 @@
+/* Convert a h_errno error code to a string.
+   Copyright (C) 2016 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
+   <http://www.gnu.org/licenses/>.  */
+
+#include <support/format_nss.h>
+
+#include <support/support.h>
+
+char *
+support_format_herrno (int code)
+{
+  const char *errstr;
+  switch (code)
+    {
+    case HOST_NOT_FOUND:
+      errstr = "HOST_NOT_FOUND";
+      break;
+    case NO_ADDRESS:
+      errstr = "NO_ADDRESS";
+      break;
+    case NO_RECOVERY:
+      errstr = "NO_RECOVERY";
+      break;
+    case TRY_AGAIN:
+      errstr = "TRY_AGAIN";
+      break;
+    default:
+      return xasprintf ("<invalid h_errno value %d>\n", code);
+    }
+  return xstrdup (errstr);
+}