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 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, write the Free Software Foundation, Inc.,
21 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
22 *
23 */
24
25 /*
26 * AUTHOR : Cédric Hnyda
27 * DATE STARTED : 06/13/2015
28 *
29 * Calls getrandom(2), check that the return value is equal to the
30 * number of bytes required and expects success.
31 */
32
33 #include "lapi/getrandom.h"
34 #include "lapi/syscalls.h"
35 #include "tst_test.h"
36
37 #define MAX_SIZE 256
38
39 static unsigned int sizes[] = {
40 1,
41 2,
42 3,
43 7,
44 8,
45 15,
46 22,
47 64,
48 127,
49 };
50
verify_getrandom(unsigned int n)51 static void verify_getrandom(unsigned int n)
52 {
53 char buf[MAX_SIZE];
54
55 TEST(tst_syscall(__NR_getrandom, buf, sizes[n], 0));
56
57 if (TST_RET != sizes[n]) {
58 tst_res(TFAIL | TTERRNO, "getrandom returned %li, expected %u",
59 TST_RET, sizes[n]);
60 } else {
61 tst_res(TPASS, "getrandom returned %ld", TST_RET);
62 }
63 }
64
65 static struct tst_test test = {
66 .tcnt = ARRAY_SIZE(sizes),
67 .test = verify_getrandom,
68 };
69