119 lines
2.7 KiB
C
119 lines
2.7 KiB
C
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// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (C) 2021 SUSE LLC Andrea Cervesato <andrea.cervesato@suse.com>
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*/
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/*\
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* [Description]
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*
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* This test verifies futex_waitv syscall using shared data.
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*/
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#define _GNU_SOURCE
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#include <unistd.h>
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#include <time.h>
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#include <sys/shm.h>
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#include "tst_test.h"
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#include "lapi/futex.h"
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#include "lapi/syscalls.h"
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#include "futex2test.h"
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#include "futex_utils.h"
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#include "tst_safe_pthread.h"
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#include "tst_safe_clocks.h"
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#include "tst_safe_sysv_ipc.h"
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static char *str_numfutex;
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static int numfutex = 30;
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static struct futex_waitv *waitv;
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static unsigned int waitv_allocated;
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static int *shmids;
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static void setup(void)
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{
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struct futex_test_variants tv = futex_variant();
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int i;
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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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if (tst_parse_int(str_numfutex, &numfutex, 1, FUTEX_WAITV_MAX))
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tst_brk(TBROK, "Invalid number of futexes '%s'", str_numfutex);
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waitv = tst_alloc(sizeof(struct futex_waitv) * numfutex);
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memset(waitv, 0, sizeof(struct futex_waitv) * numfutex);
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shmids = tst_alloc(sizeof(int*) * numfutex);
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memset(shmids, 0, sizeof(int*) * numfutex);
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for (i = 0; i < numfutex; i++) {
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shmids[i] = SAFE_SHMGET(IPC_PRIVATE, 4096, IPC_CREAT | 0666);
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waitv[i].uaddr = (uintptr_t)SAFE_SHMAT(shmids[i], NULL, 0);
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waitv[i].flags = FUTEX_32;
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waitv[i].val = 0;
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}
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waitv_allocated = tst_variant + 1;
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}
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static void cleanup(void)
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{
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int i;
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if (waitv_allocated != (tst_variant + 1))
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return;
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for (i = 0; i < numfutex; i++) {
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if (!waitv[i].uaddr)
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continue;
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SAFE_SHMDT((void *)(uintptr_t)waitv[i].uaddr);
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SAFE_SHMCTL(shmids[i], IPC_RMID, NULL);
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}
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}
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static void *threaded(LTP_ATTRIBUTE_UNUSED void *arg)
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{
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struct futex_test_variants tv = futex_variant();
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TST_RETRY_FUNC(futex_wake(tv.fntype,
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(void *)(uintptr_t)waitv[numfutex - 1].uaddr,
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1, 0), futex_waked_someone);
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return NULL;
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}
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static void run(void)
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{
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struct timespec to;
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pthread_t t;
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SAFE_PTHREAD_CREATE(&t, NULL, threaded, NULL);
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/* setting absolute timeout for futex2 */
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SAFE_CLOCK_GETTIME(CLOCK_MONOTONIC, &to);
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to.tv_sec += 5;
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TEST(futex_waitv(waitv, numfutex, 0, &to, CLOCK_MONOTONIC));
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if (TST_RET < 0) {
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tst_brk(TBROK | TTERRNO, "futex_waitv returned: %ld", TST_RET);
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} else if (TST_RET != numfutex - 1) {
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tst_res(TFAIL, "futex_waitv returned: %ld, expecting %d",
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TST_RET, numfutex - 1);
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}
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SAFE_PTHREAD_JOIN(t, NULL);
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tst_res(TPASS, "futex_waitv returned correctly");
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}
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static struct tst_test test = {
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.test_all = run,
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.setup = setup,
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.cleanup = cleanup,
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.min_kver = "5.16",
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.test_variants = FUTEX_VARIANTS,
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.options =
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(struct tst_option[]){
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{ "n:", &str_numfutex, "Number of futex (default 30)" },
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{},
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},
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};
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