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) after having limited the number of available file
6*49cdfc7eSAndroid Build Coastguard Worker * descriptors to 3 and expects success.
7*49cdfc7eSAndroid Build Coastguard Worker */
8*49cdfc7eSAndroid Build Coastguard Worker
9*49cdfc7eSAndroid Build Coastguard Worker #include <sys/resource.h>
10*49cdfc7eSAndroid Build Coastguard Worker #include "tst_test.h"
11*49cdfc7eSAndroid Build Coastguard Worker #include "lapi/getrandom.h"
12*49cdfc7eSAndroid Build Coastguard Worker #include "lapi/syscalls.h"
13*49cdfc7eSAndroid Build Coastguard Worker
verify_getrandom(void)14*49cdfc7eSAndroid Build Coastguard Worker static void verify_getrandom(void)
15*49cdfc7eSAndroid Build Coastguard Worker {
16*49cdfc7eSAndroid Build Coastguard Worker char buf[128];
17*49cdfc7eSAndroid Build Coastguard Worker struct rlimit lold, lnew;
18*49cdfc7eSAndroid Build Coastguard Worker
19*49cdfc7eSAndroid Build Coastguard Worker SAFE_GETRLIMIT(RLIMIT_NOFILE, &lold);
20*49cdfc7eSAndroid Build Coastguard Worker lnew.rlim_max = lold.rlim_max;
21*49cdfc7eSAndroid Build Coastguard Worker lnew.rlim_cur = 3;
22*49cdfc7eSAndroid Build Coastguard Worker SAFE_SETRLIMIT(RLIMIT_NOFILE, &lnew);
23*49cdfc7eSAndroid Build Coastguard Worker
24*49cdfc7eSAndroid Build Coastguard Worker TEST(tst_syscall(__NR_getrandom, buf, 100, 0));
25*49cdfc7eSAndroid Build Coastguard Worker if (TST_RET == -1)
26*49cdfc7eSAndroid Build Coastguard Worker tst_res(TFAIL | TTERRNO, "getrandom failed");
27*49cdfc7eSAndroid Build Coastguard Worker else
28*49cdfc7eSAndroid Build Coastguard Worker tst_res(TPASS, "getrandom returned %ld", TST_RET);
29*49cdfc7eSAndroid Build Coastguard Worker
30*49cdfc7eSAndroid Build Coastguard Worker SAFE_SETRLIMIT(RLIMIT_NOFILE, &lold);
31*49cdfc7eSAndroid Build Coastguard Worker }
32*49cdfc7eSAndroid Build Coastguard Worker
33*49cdfc7eSAndroid Build Coastguard Worker static struct tst_test test = {
34*49cdfc7eSAndroid Build Coastguard Worker .test_all = verify_getrandom,
35*49cdfc7eSAndroid Build Coastguard Worker };
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