1/* Compatibility stubs of accidentally exported __nss_*_lookup functions.
2 Copyright (C) 2017-2023 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
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, see
17 <https://www.gnu.org/licenses/>. */
18
19#include <nsswitch.h>
20
21#include <shlib-compat.h>
22#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_27)
23
24# include <errno.h>
25
26/* On i386, the function calling convention changed from the standard
27 ABI calling convention to three register parameters in glibc 2.8.
28 The following error-returning stub happens to be compatible with
29 glibc 2.7 and earlier and glibc 2.8 and later, even on i386. */
30int
31attribute_compat_text_section
32__nss_passwd_lookup (nss_action_list *ni, const char *fct_name, void **fctp)
33{
34 __set_errno (ENOSYS);
35 return -1;
36}
37compat_symbol (libc, __nss_passwd_lookup, __nss_passwd_lookup, GLIBC_2_0);
38strong_alias (__nss_passwd_lookup, __nss_group_lookup)
39compat_symbol (libc, __nss_group_lookup, __nss_group_lookup, GLIBC_2_0);
40strong_alias (__nss_passwd_lookup, __nss_hosts_lookup)
41compat_symbol (libc, __nss_hosts_lookup, __nss_hosts_lookup, GLIBC_2_0);
42
43#endif /* SHLIB_COMPAT */
44
45#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_30)
46
47/* These functions were exported under a non-GLIBC_PRIVATE version,
48 even though it is not usable externally due to the service_user
49 (now nss_action_list) type dependency. */
50
51int
52attribute_compat_text_section
53__nss_next (nss_action_list *ni, const char *fct_name, void **fctp, int status,
54 int all_values)
55{
56 return -1;
57}
58compat_symbol (libc, __nss_next, __nss_next, GLIBC_2_0);
59
60int
61attribute_compat_text_section
62__nss_database_lookup (const char *database, const char *alternate_name,
63 const char *defconfig, nss_action_list *ni)
64{
65 *ni = NULL;
66 return -1;
67}
68compat_symbol (libc, __nss_database_lookup, __nss_database_lookup, GLIBC_2_0);
69
70#endif /* SHLIB_COMPAT */
71