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/* Test of getting user name.
Copyright (C) 2010-2023 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Bruno Haible and Paul Eggert. */
#include <config.h>
#include <unistd.h>
#include "signature.h"
SIGNATURE_CHECK (getlogin_r, int, (char *, size_t));
#include "test-getlogin.h"
int
main (void)
{
/* Test value. */
/* Test with a large enough buffer. */
char buf[1024];
int err = getlogin_r (buf, sizeof buf);
#if defined __sun
if (err == EINVAL)
{
/* This can happen on Solaris 11 OpenIndiana in the MATE desktop. */
fprintf (stderr, "Skipping test: no entry in /var/adm/utmpx.\n");
exit (77);
}
#endif
test_getlogin_result (buf, err);
/* Test with a small buffer. */
{
char smallbuf[1024];
size_t n = strlen (buf);
size_t i;
for (i = 0; i <= n; i++)
{
err = getlogin_r (smallbuf, i);
if (i == 0)
ASSERT (err == ERANGE || err == EINVAL);
else
ASSERT (err == ERANGE);
}
}
/* Test with a huge buffer. */
{
static char hugebuf[70000];
ASSERT (getlogin_r (hugebuf, sizeof (hugebuf)) == 0);
ASSERT (strcmp (hugebuf, buf) == 0);
}
return 0;
}
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