1/* Copyright (C) 1999-2024 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 <https://www.gnu.org/licenses/>. */
17
18#include <unistd.h>
19#include <stdio.h>
20#include <string.h>
21
22static int
23do_test (void)
24{
25 char *login;
26 int errors = 0;
27
28 login = getlogin ();
29 if (login == NULL)
30 puts (s: "getlogin returned NULL, no further tests");
31 else
32 {
33 char name[1024];
34 int ret;
35
36 printf (format: "getlogin returned: `%s'\n", login);
37
38 ret = getlogin_r (name, sizeof (name));
39 if (ret == 0)
40 {
41 printf (format: "getlogin_r returned: `%s'\n", name);
42 if (strcmp (name, login) != 0)
43 {
44 puts (s: "Error: getlogin and getlogin_r returned different names");
45 ++errors;
46 }
47 }
48 else
49 {
50 printf (format: "Error: getlogin_r returned: %d (%s)\n",
51 ret, strerror (errnum: ret));
52 ++errors;
53 }
54 }
55
56 return errors != 0;
57}
58
59#define TEST_FUNCTION do_test ()
60#include "../test-skeleton.c"
61

source code of glibc/login/tst-getlogin.c