1*49cdfc7eSAndroid Build Coastguard Worker // SPDX-License-Identifier: GPL-2.0-or-later
2*49cdfc7eSAndroid Build Coastguard Worker /*
3*49cdfc7eSAndroid Build Coastguard Worker * Copyright (C) 2015 Cedric Hnyda <[email protected]>
4*49cdfc7eSAndroid Build Coastguard Worker *
5*49cdfc7eSAndroid Build Coastguard Worker * Calls getrandom(2), check that the return value is equal to the
6*49cdfc7eSAndroid Build Coastguard Worker * number of bytes required and expects success.
7*49cdfc7eSAndroid Build Coastguard Worker */
8*49cdfc7eSAndroid Build Coastguard Worker
9*49cdfc7eSAndroid Build Coastguard Worker #include "tst_test.h"
10*49cdfc7eSAndroid Build Coastguard Worker #include "lapi/getrandom.h"
11*49cdfc7eSAndroid Build Coastguard Worker #include "lapi/syscalls.h"
12*49cdfc7eSAndroid Build Coastguard Worker
13*49cdfc7eSAndroid Build Coastguard Worker #define MAX_SIZE 256
14*49cdfc7eSAndroid Build Coastguard Worker
15*49cdfc7eSAndroid Build Coastguard Worker static unsigned int sizes[] = {
16*49cdfc7eSAndroid Build Coastguard Worker 1,
17*49cdfc7eSAndroid Build Coastguard Worker 2,
18*49cdfc7eSAndroid Build Coastguard Worker 3,
19*49cdfc7eSAndroid Build Coastguard Worker 7,
20*49cdfc7eSAndroid Build Coastguard Worker 8,
21*49cdfc7eSAndroid Build Coastguard Worker 15,
22*49cdfc7eSAndroid Build Coastguard Worker 22,
23*49cdfc7eSAndroid Build Coastguard Worker 64,
24*49cdfc7eSAndroid Build Coastguard Worker 127,
25*49cdfc7eSAndroid Build Coastguard Worker };
26*49cdfc7eSAndroid Build Coastguard Worker
verify_getrandom(unsigned int n)27*49cdfc7eSAndroid Build Coastguard Worker static void verify_getrandom(unsigned int n)
28*49cdfc7eSAndroid Build Coastguard Worker {
29*49cdfc7eSAndroid Build Coastguard Worker char buf[MAX_SIZE];
30*49cdfc7eSAndroid Build Coastguard Worker
31*49cdfc7eSAndroid Build Coastguard Worker TEST(tst_syscall(__NR_getrandom, buf, sizes[n], 0));
32*49cdfc7eSAndroid Build Coastguard Worker
33*49cdfc7eSAndroid Build Coastguard Worker if (TST_RET != sizes[n]) {
34*49cdfc7eSAndroid Build Coastguard Worker tst_res(TFAIL | TTERRNO, "getrandom returned %li, expected %u",
35*49cdfc7eSAndroid Build Coastguard Worker TST_RET, sizes[n]);
36*49cdfc7eSAndroid Build Coastguard Worker } else {
37*49cdfc7eSAndroid Build Coastguard Worker tst_res(TPASS, "getrandom returned %ld", TST_RET);
38*49cdfc7eSAndroid Build Coastguard Worker }
39*49cdfc7eSAndroid Build Coastguard Worker }
40*49cdfc7eSAndroid Build Coastguard Worker
41*49cdfc7eSAndroid Build Coastguard Worker static struct tst_test test = {
42*49cdfc7eSAndroid Build Coastguard Worker .tcnt = ARRAY_SIZE(sizes),
43*49cdfc7eSAndroid Build Coastguard Worker .test = verify_getrandom,
44*49cdfc7eSAndroid Build Coastguard Worker };
45