2874c5fd28
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
79 lines
1.9 KiB
C
79 lines
1.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/******************************************************************************
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*
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* Copyright © International Business Machines Corp., 2009
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*
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* DESCRIPTION
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* 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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* AUTHOR
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* Gowrishankar <gowrishankar.m@in.ibm.com>
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*
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* HISTORY
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* 2009-Nov-14: Initial version by Gowrishankar <gowrishankar.m@in.ibm.com>
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*
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*****************************************************************************/
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#include <errno.h>
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#include <getopt.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include "futextest.h"
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#include "logging.h"
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#define TEST_NAME "futex-wait-wouldblock"
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#define timeout_ns 100000
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void usage(char *prog)
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{
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printf("Usage: %s\n", prog);
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printf(" -c Use color\n");
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printf(" -h Display this help message\n");
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printf(" -v L Verbosity level: %d=QUIET %d=CRITICAL %d=INFO\n",
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VQUIET, VCRITICAL, VINFO);
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}
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int main(int argc, char *argv[])
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{
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struct timespec to = {.tv_sec = 0, .tv_nsec = timeout_ns};
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futex_t f1 = FUTEX_INITIALIZER;
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int res, ret = RET_PASS;
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int c;
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while ((c = getopt(argc, argv, "cht:v:")) != -1) {
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switch (c) {
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case 'c':
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log_color(1);
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break;
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case 'h':
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usage(basename(argv[0]));
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exit(0);
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case 'v':
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log_verbosity(atoi(optarg));
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break;
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default:
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usage(basename(argv[0]));
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exit(1);
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}
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}
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ksft_print_header();
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ksft_set_plan(1);
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ksft_print_msg("%s: Test the unexpected futex value in FUTEX_WAIT\n",
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basename(argv[0]));
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info("Calling futex_wait on f1: %u @ %p with val=%u\n", f1, &f1, f1+1);
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res = futex_wait(&f1, f1+1, &to, FUTEX_PRIVATE_FLAG);
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if (!res || errno != EWOULDBLOCK) {
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fail("futex_wait returned: %d %s\n",
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res ? errno : res, res ? strerror(errno) : "");
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ret = RET_FAIL;
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}
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print_result(TEST_NAME, ret);
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return ret;
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}
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