1 /*
2  * Copyright (C) 2015 Cedric Hnyda ced.hnyda@gmail.com
3  *
4  * This program is free software; you can redistribute it and/or modify it
5  * under the terms of version 2 of the GNU General Public License as
6  * published by the Free Software Foundation.
7  *
8  * This program is distributed in the hope that it would be useful, but
9  * WITHOUT ANY WARRANTY; without even the implied warranty of
10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
11  *
12  * Further, this software is distributed without any warranty that it is
13  * free of the rightful claim of any third person regarding infringement
14  * or the like.  Any license provided herein, whether implied or
15  * otherwise, applies only to this software file.  Patent licenses, if
16  * any, provided herein do not apply to combinations of this program with
17  * other software, or any other product whatsoever.
18  *
19  */
20 
21 /*
22  * AUTHOR   : Cédric Hnyda
23  * DATE STARTED : 06/13/2015
24  *
25  *  Calls getrandom(2) with a NULL buffer and expects failure.
26  *
27  */
28 
29 #include "lapi/getrandom.h"
30 #include "lapi/syscalls.h"
31 #include "tst_test.h"
32 
33 static int modes[] = {0, GRND_RANDOM, GRND_NONBLOCK,
34 		      GRND_RANDOM | GRND_NONBLOCK};
35 
36 static void verify_getrandom(unsigned int n)
37 {
38 	TEST(tst_syscall(__NR_getrandom, NULL, 100, modes[n]));
39 
40 	if (TEST_RETURN == -1) {
41 		tst_res(TPASS | TTERRNO, "getrandom returned %ld",
42 			TEST_RETURN);
43 	} else {
44 		tst_res(TFAIL | TTERRNO, "getrandom failed");
45 	}
46 }
47 
48 static struct tst_test test = {
49 	.tcnt = ARRAY_SIZE(modes),
50 	.test = verify_getrandom,
51 };
52