/* Copyright (C) 1996, 1997, 1999, 2000, 2002 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, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ #include "nsswitch.h" /*******************************************************************\ |* Here we assume one symbol to be defined: *| |* *| |* DATABASE_NAME - name of the database the function accesses *| |* (e.g., hosts, services, ...) *| |* *| |* One additional symbol may optionally be defined: *| |* *| |* ALTERNATE_NAME - name of another service which is examined in *| |* case DATABASE_NAME is not found *| |* *| |* DEFAULT_CONFIG - string for default conf (e.g. "dns files") *| |* *| \*******************************************************************/ #define DB_LOOKUP_FCT CONCAT3_1 (__nss_, DATABASE_NAME, _lookup) #define CONCAT3_1(Pre, Name, Post) CONCAT3_2 (Pre, Name, Post) #define CONCAT3_2(Pre, Name, Post) Pre##Name##Post #define DATABASE_NAME_SYMBOL CONCAT3_1 (__nss_, DATABASE_NAME, _database) #define DATABASE_NAME_STRING STRINGIFY1 (DATABASE_NAME) #define STRINGIFY1(Name) STRINGIFY2 (Name) #define STRINGIFY2(Name) #Name #ifdef ALTERNATE_NAME #define ALTERNATE_NAME_STRING STRINGIFY1 (ALTERNATE_NAME) #else #define ALTERNATE_NAME_STRING NULL #endif #ifndef DEFAULT_CONFIG #define DEFAULT_CONFIG NULL #endif service_user *DATABASE_NAME_SYMBOL attribute_hidden; extern int DB_LOOKUP_FCT (service_user **ni, const char *fct_name, void **fctp) internal_function; libc_hidden_proto (DB_LOOKUP_FCT) int internal_function DB_LOOKUP_FCT (service_user **ni, const char *fct_name, void **fctp) { if (DATABASE_NAME_SYMBOL == NULL && __nss_database_lookup (DATABASE_NAME_STRING, ALTERNATE_NAME_STRING, DEFAULT_CONFIG, &DATABASE_NAME_SYMBOL) < 0) return -1; *ni = DATABASE_NAME_SYMBOL; return __nss_lookup (ni, fct_name, fctp); } libc_hidden_def (DB_LOOKUP_FCT)