36 lines
827 B
C
36 lines
827 B
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (C) 2015 Cedric Hnyda <ced.hnyda@gmail.com>
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*
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* Calls getrandom(2) after having limited the number of available file
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* descriptors to 3 and expects success.
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*/
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#include <sys/resource.h>
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#include "lapi/getrandom.h"
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#include "lapi/syscalls.h"
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#include "tst_test.h"
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static void verify_getrandom(void)
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{
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char buf[128];
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struct rlimit lold, lnew;
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SAFE_GETRLIMIT(RLIMIT_NOFILE, &lold);
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lnew.rlim_max = lold.rlim_max;
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lnew.rlim_cur = 3;
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SAFE_SETRLIMIT(RLIMIT_NOFILE, &lnew);
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TEST(tst_syscall(__NR_getrandom, buf, 100, 0));
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if (TST_RET == -1)
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tst_res(TFAIL | TTERRNO, "getrandom failed");
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else
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tst_res(TPASS, "getrandom returned %ld", TST_RET);
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SAFE_SETRLIMIT(RLIMIT_NOFILE, &lold);
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}
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static struct tst_test test = {
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.test_all = verify_getrandom,
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};
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