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53 lines
1.9 KiB
C
53 lines
1.9 KiB
C
/* Copyright (C) 1996-2014 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <netdb.h>
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#include <string.h>
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#define LOOKUP_TYPE struct hostent
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#define FUNCTION_NAME gethostbyaddr
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#define DATABASE_NAME hosts
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#define ADD_PARAMS const void *addr, socklen_t len, int type
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#define ADD_VARIABLES addr, len, type
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#define NEED_H_ERRNO 1
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#define NEED__RES 1
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#define NEED__RES_HCONF 1
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/* If the addr parameter is the IPv6 unspecified address no query must
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be performed. */
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#define PREPROCESS \
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if (len == sizeof (struct in6_addr) \
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&& __builtin_expect (memcmp (&in6addr_any, addr, \
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sizeof (struct in6_addr)), 1) == 0) \
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{ \
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*h_errnop = HOST_NOT_FOUND; \
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*result = NULL; \
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return ENOENT; \
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}
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#define POSTPROCESS \
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if (status == NSS_STATUS_SUCCESS) \
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{ \
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_res_hconf_reorder_addrs (resbuf); \
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_res_hconf_trim_domains (resbuf); \
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}
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/* Special name for the lookup function. */
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#define DB_LOOKUP_FCT __nss_hosts_lookup2
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#include "../nss/getXXbyYY_r.c"
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