79 lines
2.1 KiB
C
79 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (C) 2015 Cyril Hrubis <chrubis@suse.cz>
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*
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* Based on futextest (futext_wait_timeout.c and futex_wait_ewouldblock.c)
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* written by Darren Hart <dvhltc@us.ibm.com>
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* Gowrishankar <gowrishankar.m@in.ibm.com>
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*
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* 1. Block on a futex and wait for timeout.
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* 2. Test if FUTEX_WAIT op returns -EWOULDBLOCK if the futex value differs
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* from the expected one.
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*/
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#include "futextest.h"
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struct testcase {
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futex_t *f_addr;
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futex_t f_val;
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int opflags;
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int exp_errno;
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};
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static futex_t futex = FUTEX_INITIALIZER;
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static struct testcase testcases[] = {
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{&futex, FUTEX_INITIALIZER, 0, ETIMEDOUT},
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{&futex, FUTEX_INITIALIZER+1, 0, EWOULDBLOCK},
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{&futex, FUTEX_INITIALIZER, FUTEX_PRIVATE_FLAG, ETIMEDOUT},
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{&futex, FUTEX_INITIALIZER+1, FUTEX_PRIVATE_FLAG, EWOULDBLOCK},
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};
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static struct futex_test_variants variants[] = {
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#if (__NR_futex != __LTP__NR_INVALID_SYSCALL)
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{ .fntype = FUTEX_FN_FUTEX, .tstype = TST_KERN_OLD_TIMESPEC, .desc = "syscall with old kernel spec"},
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#endif
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#if (__NR_futex_time64 != __LTP__NR_INVALID_SYSCALL)
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{ .fntype = FUTEX_FN_FUTEX64, .tstype = TST_KERN_TIMESPEC, .desc = "syscall time64 with kernel spec"},
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#endif
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};
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static void run(unsigned int n)
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{
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struct futex_test_variants *tv = &variants[tst_variant];
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struct testcase *tc = &testcases[n];
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struct tst_ts to = tst_ts_from_ns(tv->tstype, 10000);
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int res;
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res = futex_wait(tv->fntype, tc->f_addr, tc->f_val, &to, tc->opflags);
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if (res != -1) {
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tst_res(TFAIL, "futex_wait() succeeded unexpectedly");
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return;
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}
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if (errno != tc->exp_errno) {
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tst_res(TFAIL | TERRNO, "futex_wait() failed with incorrect error, expected errno=%s",
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tst_strerrno(tc->exp_errno));
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return;
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}
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tst_res(TPASS | TERRNO, "futex_wait() passed");
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}
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static void setup(void)
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{
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struct futex_test_variants *tv = &variants[tst_variant];
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tst_res(TINFO, "Testing variant: %s", tv->desc);
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futex_supported_by_kernel(tv->fntype);
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}
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static struct tst_test test = {
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.setup = setup,
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.test = run,
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.tcnt = ARRAY_SIZE(testcases),
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.test_variants = ARRAY_SIZE(variants),
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};
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