1: /* Copyright (C) 1996,1997,1998,1999,2000,2002 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, write to the Free
   17:    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   18:    02111-1307 USA.  */
   19: 
   20: #include <netdb.h>
   21: #include <string.h>
   22: 
   23: 
   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;                                                          \
   42:     }
   43: #define POSTPROCESS \
   44:   if (status == NSS_STATUS_SUCCESS)                                           \
   45:     {                                                                         \
   46:       _res_hconf_reorder_addrs (resbuf);                                      \
   47:       _res_hconf_trim_domains (resbuf);                                       \
   48:     }
   49: 
   50: /* Special name for the lookup function.  */
   51: #define DB_LOOKUP_FCT __nss_hosts_lookup
   52: 
   53: #include "../nss/getXXbyYY_r.c"