1 files changed, 84 insertions, 0 deletions
diff --git a/REORG.TODO/inet/ether_ntoh.c b/REORG.TODO/inet/ether_ntoh.c
new file mode 100644
index 0000000000..b2f7422ace
--- /dev/null
+++ b/REORG.TODO/inet/ether_ntoh.c
@@ -0,0 +1,84 @@
+/* Copyright (C) 1996-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
+
+   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 <errno.h>
+#include <netinet/ether.h>
+#include <netinet/if_ether.h>
+#include <string.h>
+
+#include <nss/nsswitch.h>
+
+
+/* Type of the lookup function we need here.  */
+typedef int (*lookup_function) (const struct ether_addr *, struct etherent *,
+				char *, size_t, int *);
+
+/* The lookup function for the first entry of this service.  */
+extern int __nss_ethers_lookup (service_user **nip, const char *name,
+				void **fctp) internal_function;
+
+
+int
+ether_ntohost (char *hostname, const struct ether_addr *addr)
+{
+  static service_user *startp;
+  static lookup_function start_fct;
+  service_user *nip;
+  union
+  {
+    lookup_function f;
+    void *ptr;
+  } fct;
+  int no_more;
+  enum nss_status status = NSS_STATUS_UNAVAIL;
+  struct etherent etherent;
+
+  if (startp == NULL)
+    {
+      no_more = __nss_ethers_lookup (&nip, "getntohost_r", &fct.ptr);
+      if (no_more)
+	startp = (service_user *) -1;
+      else
+	{
+	  startp = nip;
+	  start_fct = fct.f;
+	}
+    }
+  else
+    {
+      fct.f = start_fct;
+      no_more = (nip = startp) == (service_user *) -1;
+    }
+
+  while (no_more == 0)
+    {
+      char buffer[1024];
+
+      status = (*fct.f) (addr, &etherent, buffer, sizeof buffer, &errno);
+
+      no_more = __nss_next2 (&nip, "getntohost_r", NULL, &fct.ptr, status, 0);
+    }
+
+  if (status == NSS_STATUS_SUCCESS)
+    /* XXX This is a potential cause of trouble because the size of
+       the HOSTNAME buffer is not known but the interface does not
+       provide this information.  */
+    strcpy (hostname, etherent.e_name);
+
+  return status == NSS_STATUS_SUCCESS ? 0 : -1;
+}