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 | |