| /* Copyright (C) 1996-2018 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 <netdb.h> |
| #include <string.h> |
| #include <resolv/res_hconf.h> |
| |
| #define LOOKUP_TYPE struct hostent |
| #define FUNCTION_NAME gethostbyaddr |
| #define DATABASE_NAME hosts |
| #define ADD_PARAMS const void *addr, socklen_t len, int type |
| #define ADD_VARIABLES addr, len, type |
| #define NEED_H_ERRNO 1 |
| #define NEED__RES 1 |
| /* If the addr parameter is the IPv6 unspecified address no query must |
| be performed. */ |
| #define PREPROCESS \ |
| if (len == sizeof (struct in6_addr) \ |
| && __builtin_expect (memcmp (&__in6addr_any, addr, \ |
| sizeof (struct in6_addr)), 1) == 0) \ |
| { \ |
| *h_errnop = HOST_NOT_FOUND; \ |
| *result = NULL; \ |
| return ENOENT; \ |
| } |
| #define POSTPROCESS \ |
| if (status == NSS_STATUS_SUCCESS) \ |
| { \ |
| _res_hconf_reorder_addrs (resbuf); \ |
| _res_hconf_trim_domains (resbuf); \ |
| } |
| |
| /* Special name for the lookup function. */ |
| #define DB_LOOKUP_FCT __nss_hosts_lookup2 |
| |
| #include "../nss/getXXbyYY_r.c" |
