1 /* Test of getting user name.
2 Copyright (C) 2010-2016 Free Software Foundation, Inc.
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 3 of the License, or
7 (at your option) any later version.
9 This program 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
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
17 /* Written by Bruno Haible <bruno@clisp.org>, 2010. */
23 #include "signature.h"
24 SIGNATURE_CHECK (getlogin_r, int, (char *, size_t));
34 #include <sys/types.h>
41 /* Test with a large enough buffer. */
45 err = getlogin_r (buf, sizeof (buf));
50 /* This can happen on GNU/Linux. */
51 fprintf (stderr, "Skipping test: no entry in utmp file.\n");
55 /* getlogin_r() fails when stdin is not connected to a tty. */
57 || err == EINVAL /* seen on Linux/SPARC */
60 #if !defined __hpux /* On HP-UX 11.11 it fails anyway. */
61 ASSERT (! isatty (0));
63 fprintf (stderr, "Skipping test: stdin is not a tty.\n");
67 /* Compare against the value from the environment. */
68 #if !((defined _WIN32 || defined __WIN32__) && !defined __CYGWIN__)
76 tty = ttyname (STDIN_FILENO);
79 fprintf (stderr, "Skipping test: stdin is not a tty.\n");
83 ASSERT (stat (tty, &stat_buf) == 0);
85 pwd = getpwuid (stat_buf.st_uid);
88 fprintf (stderr, "Skipping test: no name found for uid %d\n",
93 ASSERT (strcmp (pwd->pw_name, buf) == 0);
97 #if (defined _WIN32 || defined __WIN32__) && !defined __CYGWIN__
98 /* Native Windows platform.
99 Note: This test would fail on Cygwin in an ssh session, because sshd
100 sets USERNAME=SYSTEM. */
102 const char *name = getenv ("USERNAME");
103 if (name != NULL && name[0] != '\0')
104 ASSERT (strcmp (buf, name) == 0);
108 /* Test with a small buffer. */
111 size_t n = strlen (buf);
114 for (i = 0; i <= n; i++)
116 err = getlogin_r (smallbuf, i);
118 ASSERT (err == ERANGE || err == EINVAL);
120 ASSERT (err == ERANGE);
124 /* Test with a huge buffer. */
126 static char hugebuf[70000];
128 ASSERT (getlogin_r (hugebuf, sizeof (hugebuf)) == 0);
129 ASSERT (strcmp (hugebuf, buf) == 0);