1/* Copyright (C) 1996-2018 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <http://www.gnu.org/licenses/>. */
17
18/* Define interface to NSS. This is meant for the interface functions
19 and for implementors of new services. */
20
21#ifndef _NSS_H
22#define _NSS_H 1
23
24#include <features.h>
25#include <stdint.h>
26
27
28__BEGIN_DECLS
29
30/* Possible results of lookup using a nss_* function. */
31enum nss_status
32{
33 NSS_STATUS_TRYAGAIN = -2,
34 NSS_STATUS_UNAVAIL,
35 NSS_STATUS_NOTFOUND,
36 NSS_STATUS_SUCCESS,
37 NSS_STATUS_RETURN
38};
39
40
41/* Data structure used for the 'gethostbyname4_r' function. */
42struct gaih_addrtuple
43 {
44 struct gaih_addrtuple *next;
45 char *name;
46 int family;
47 uint32_t addr[4];
48 uint32_t scopeid;
49 };
50
51
52/* Overwrite service selection for database DBNAME using specification
53 in STRING.
54 This function should only be used by system programs which have to
55 work around non-existing services (e.e., while booting).
56 Attention: Using this function repeatedly will slowly eat up the
57 whole memory since previous selection data cannot be freed. */
58extern int __nss_configure_lookup (const char *__dbname,
59 const char *__string) __THROW;
60
61__END_DECLS
62
63#endif /* nss.h */
64