glibc/stdlib/tst-getrandom-errno.c

38 lines
1.2 KiB
C

/* Test errno handling in getrandom (bug 32440).
Copyright (C) 2024-2025 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <errno.h>
#include <stdlib.h>
#include <support/check.h>
#include <sys/random.h>
static
int do_test (void)
{
errno = -1181968554; /* Just a random value. */
char buf[4];
int ret = getrandom (buf, sizeof (buf), -1); /* All flags set. */
if (errno != ENOSYS)
TEST_COMPARE (errno, EINVAL);
TEST_COMPARE (ret, -1);
return 0;
}
#include <support/test-driver.c>