1 files changed, 59 insertions, 0 deletions
diff --git a/REORG.TODO/resolv/resolv-internal.h b/REORG.TODO/resolv/resolv-internal.h
new file mode 100644
index 0000000000..0d69ce10d3
--- /dev/null
+++ b/REORG.TODO/resolv/resolv-internal.h
@@ -0,0 +1,59 @@
+/* libresolv interfaces for internal use across glibc.
+   Copyright (C) 2016-2017 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/>.  */
+
+#ifndef _RESOLV_INTERNAL_H
+#define _RESOLV_INTERNAL_H 1
+
+#include <resolv.h>
+#include <stdbool.h>
+
+/* Resolver flags.  Used for _flags in struct __res_state.  */
+#define RES_F_VC        0x00000001 /* Socket is TCP.  */
+#define RES_F_CONN      0x00000002 /* Socket is connected.  */
+#define RES_F_EDNS0ERR  0x00000004 /* EDNS0 caused errors.  */
+
+
+/* Internal version of RES_USE_INET6 which does not trigger a
+   deprecation warning.  */
+#define DEPRECATED_RES_USE_INET6 0x00002000
+
+static inline bool
+res_use_inet6 (void)
+{
+  return _res.options & DEPRECATED_RES_USE_INET6;
+}
+
+enum
+  {
+    /* The advertized EDNS buffer size.  The value 1200 is derived
+       from the IPv6 minimum MTU (1280 bytes) minus some arbitrary
+       space for tunneling overhead.  If the DNS server does not react
+       to ICMP Fragmentation Needed But DF Set messages, this should
+       avoid all UDP fragments on current networks.  Avoiding UDP
+       fragments is desirable because it prevents fragmentation-based
+       spoofing attacks because the randomness in a DNS packet is
+       concentrated in the first fragment (with the headers) and does
+       not protect subsequent fragments.  */
+    RESOLV_EDNS_BUFFER_SIZE = 1200,
+  };
+
+/* Add an OPT record to a DNS query.  */
+int __res_nopt (res_state, int n0, unsigned char *buf, int buflen,
+                int anslen) attribute_hidden;
+
+#endif  /* _RESOLV_INTERNAL_H */