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04277e02 | 1 | /* Copyright (C) 1996-2019 Free Software Foundation, Inc. |
68dbb3a6 UD |
2 | This file is part of the GNU C Library. |
3 | Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996. | |
5f0e6fc7 | 4 | |
68dbb3a6 | 5 | The GNU C Library is free software; you can redistribute it and/or |
41bdb6e2 AJ |
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. | |
5f0e6fc7 | 9 | |
68dbb3a6 UD |
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 | |
41bdb6e2 | 13 | Lesser General Public License for more details. |
5f0e6fc7 | 14 | |
41bdb6e2 | 15 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 | 16 | License along with the GNU C Library; if not, see |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
5f0e6fc7 RM |
18 | |
19 | #include "nsswitch.h" | |
20 | ||
21 | /*******************************************************************\ | |
22 | |* Here we assume one symbol to be defined: *| | |
23 | |* *| | |
24 | |* DATABASE_NAME - name of the database the function accesses *| | |
6d52618b | 25 | |* (e.g., hosts, services, ...) *| |
5f0e6fc7 | 26 | |* *| |
bba7bb78 RM |
27 | |* One additional symbol may optionally be defined: *| |
28 | |* *| | |
5a97622d UD |
29 | |* ALTERNATE_NAME - name of another service which is examined in *| |
30 | |* case DATABASE_NAME is not found *| | |
31 | |* *| | |
bba7bb78 RM |
32 | |* DEFAULT_CONFIG - string for default conf (e.g. "dns files") *| |
33 | |* *| | |
5f0e6fc7 RM |
34 | \*******************************************************************/ |
35 | ||
384ca551 | 36 | #define DB_LOOKUP_FCT CONCAT3_1 (__nss_, DATABASE_NAME, _lookup2) |
5f0e6fc7 RM |
37 | #define CONCAT3_1(Pre, Name, Post) CONCAT3_2 (Pre, Name, Post) |
38 | #define CONCAT3_2(Pre, Name, Post) Pre##Name##Post | |
39 | ||
a8874ead | 40 | #define DATABASE_NAME_SYMBOL CONCAT3_1 (__nss_, DATABASE_NAME, _database) |
5f0e6fc7 RM |
41 | #define DATABASE_NAME_STRING STRINGIFY1 (DATABASE_NAME) |
42 | #define STRINGIFY1(Name) STRINGIFY2 (Name) | |
43 | #define STRINGIFY2(Name) #Name | |
44 | ||
68dbb3a6 UD |
45 | #ifdef ALTERNATE_NAME |
46 | #define ALTERNATE_NAME_STRING STRINGIFY1 (ALTERNATE_NAME) | |
47 | #else | |
48 | #define ALTERNATE_NAME_STRING NULL | |
49 | #endif | |
50 | ||
bba7bb78 | 51 | #ifndef DEFAULT_CONFIG |
a8874ead | 52 | #define DEFAULT_CONFIG NULL |
bba7bb78 | 53 | #endif |
5f0e6fc7 | 54 | |
5f0e6fc7 | 55 | int |
384ca551 UD |
56 | DB_LOOKUP_FCT (service_user **ni, const char *fct_name, const char *fct2_name, |
57 | void **fctp) | |
5f0e6fc7 | 58 | { |
a8874ead | 59 | if (DATABASE_NAME_SYMBOL == NULL |
a9368c34 FW |
60 | && __nss_database_lookup2 (DATABASE_NAME_STRING, ALTERNATE_NAME_STRING, |
61 | DEFAULT_CONFIG, &DATABASE_NAME_SYMBOL) < 0) | |
5f0e6fc7 RM |
62 | return -1; |
63 | ||
a8874ead | 64 | *ni = DATABASE_NAME_SYMBOL; |
5f0e6fc7 | 65 | |
384ca551 | 66 | return __nss_lookup (ni, fct_name, fct2_name, fctp); |
5f0e6fc7 | 67 | } |
37ba7d66 | 68 | libc_hidden_def (DB_LOOKUP_FCT) |