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[glibc.git] / inet / gethstbyad_r.c
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1 /* Copyright (C) 1996, 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Library General Public License as
7 published by the Free Software Foundation; either version 2 of the
8 License, or (at your option) any later version.
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 Library General Public License for more details.
15 You should have received a copy of the GNU Library General Public
16 License along with the GNU C Library; see the file COPYING.LIB. If not,
17 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA. */
20 #include <netdb.h>
21 #include <string.h>
24 #define LOOKUP_TYPE struct hostent
25 #define FUNCTION_NAME gethostbyaddr
26 #define DATABASE_NAME hosts
27 #define ADD_PARAMS const void *addr, socklen_t len, int type
28 #define ADD_VARIABLES addr, len, type
29 #define NEED_H_ERRNO 1
30 #define NEED__RES 1
31 #define NEED__RES_HCONF 1
32 /* If the addr parameter is the IPv6 unspecified address no query must
33 be performed. */
34 #define PREPROCESS \
35 if (len == sizeof (struct in6_addr) \
36 && __builtin_expect (memcmp (&in6addr_any, addr, \
37 sizeof (struct in6_addr)), 1) == 0) \
38 { \
39 *h_errnop = HOST_NOT_FOUND; \
40 *result = NULL; \
41 return ENOENT; \
43 #define POSTPROCESS \
44 if (status == NSS_STATUS_SUCCESS) \
45 { \
46 _res_hconf_reorder_addrs (resbuf); \
47 _res_hconf_trim_domains (resbuf); \
50 #include "../nss/getXXbyYY_r.c"