1/* getpwent failure when dlopen clobbers errno (bug 28953).
2 Copyright (C) 2022 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 <nss.h>
20#include <support/check.h>
21#include <stdlib.h>
22#include <errno.h>
23#include <stdbool.h>
24#include <pwd.h>
25#include <string.h>
26
27static int
28do_test (void)
29{
30 __nss_configure_lookup (dbname: "passwd", string: "files test_errno");
31
32 errno = 0;
33 setpwent ();
34 TEST_COMPARE (errno, 0);
35
36 bool root_seen = false;
37 while (true)
38 {
39 errno = 0;
40 struct passwd *e = getpwent ();
41 if (e == NULL)
42 break;
43 if (strcmp (e->pw_name, "root"))
44 root_seen = true;
45 }
46
47 TEST_COMPARE (errno, 0);
48 TEST_VERIFY (root_seen);
49
50 errno = 0;
51 endpwent ();
52 TEST_COMPARE (errno, 0);
53
54 TEST_COMPARE_STRING (getenv ("_nss_test_errno_setpwent"), "yes");
55 TEST_COMPARE_STRING (getenv ("_nss_test_errno_getpwent_r"), "yes");
56 TEST_COMPARE_STRING (getenv ("_nss_test_errno_endpwent"), "yes");
57
58 return 0;
59}
60
61#include <support/test-driver.c>
62

source code of glibc/nss/tst-nss-test_errno.c