1/* Copyright (C) 1996-2016 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
18
19#include <netdb.h>
20#include <string.h>
21
22
23#define LOOKUP_TYPE struct hostent
24#define FUNCTION_NAME gethostbyaddr
25#define DATABASE_NAME hosts
26#define ADD_PARAMS const void *addr, socklen_t len, int type
27#define ADD_VARIABLES addr, len, type
28#define NEED_H_ERRNO 1
29#define NEED__RES 1
30#define NEED__RES_HCONF 1
31/* If the addr parameter is the IPv6 unspecified address no query must
32 be performed. */
33#define PREPROCESS \
34 if (len == sizeof (struct in6_addr) \
35 && __builtin_expect (memcmp (&__in6addr_any, addr, \
36 sizeof (struct in6_addr)), 1) == 0) \
37 { \
38 *h_errnop = HOST_NOT_FOUND; \
39 *result = NULL; \
40 return ENOENT; \
41 }
42#define POSTPROCESS \
43 if (status == NSS_STATUS_SUCCESS) \
44 { \
45 _res_hconf_reorder_addrs (resbuf); \
46 _res_hconf_trim_domains (resbuf); \
47 }
48
49/* Special name for the lookup function. */
50#define DB_LOOKUP_FCT __nss_hosts_lookup2
51
52#include "../nss/getXXbyYY_r.c"
53