1#!/bin/sh 2 3# 4# SPDX-License-Identifier: BSD-2-Clause 5# 6# Copyright (c) 2020 Peter Holm <pho@FreeBSD.org> 7# 8# Redistribution and use in source and binary forms, with or without 9# modification, are permitted provided that the following conditions 10# are met: 11# 1. Redistributions of source code must retain the above copyright 12# notice, this list of conditions and the following disclaimer. 13# 2. Redistributions in binary form must reproduce the above copyright 14# notice, this list of conditions and the following disclaimer in the 15# documentation and/or other materials provided with the distribution. 16# 17# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27# SUCH DAMAGE. 28# 29 30# Regression test for r368486 31# https://reviews.freebsd.org/D27513 32 33# Problem not seen. 34 35. ../default.cfg 36[ `id -u` -ne 0 ] && echo "Must be root!" && exit 1 37 38dir=/tmp 39odir=`pwd` 40cd $dir 41sed '1,/^EOF/d' < $odir/$0 > $dir/fstat.c 42mycc -o fstat -Wall -Wextra -O0 -g fstat.c || exit 1 43rm -f fstat.c 44cd $odir 45 46set -e 47mount | grep "on $mntpoint " | grep -q /dev/md && umount -f $mntpoint 48[ -c /dev/md$mdstart ] && mdconfig -d -u $mdstart 49mdconfig -a -t swap -s 2g -u $mdstart 50newfs $newfs_flags md$mdstart > /dev/null 51mount /dev/md$mdstart $mntpoint 52set +e 53 54(cd ../testcases/swap; ./swap -t 10m -i 20 > /dev/null 2>&1) & 55cd $mntpoint 56$dir/fstat 57s=$? 58while pkill swap; do :; done 59wait 60[ -f fstat.core -a $s -eq 0 ] && 61 { ls -l fstat.core; mv fstat.core $dir; s=1; } 62cd $odir 63 64for i in `jot 6`; do 65 mount | grep -q "on $mntpoint " || break 66 umount $mntpoint && break || sleep 10 67 [ $i -eq 6 ] && 68 { echo FATAL; fstat -mf $mntpoint; exit 1; } 69done 70mdconfig -d -u $mdstart 71rm -rf $dir/fstat 72exit $s 73 74EOF 75#include <sys/param.h> 76#include <sys/mman.h> 77#include <sys/socket.h> 78#include <sys/stat.h> 79#include <sys/wait.h> 80 81#include <err.h> 82#include <errno.h> 83#include <fcntl.h> 84#include <stdatomic.h> 85#include <stdio.h> 86#include <stdlib.h> 87#include <time.h> 88#include <unistd.h> 89 90static _Atomic(int) *share; 91 92#define PARALLEL 5 93#define RUNTIME (2 * 60) 94#define SYNC 0 95#define DONE 1 96 97static void 98test(void) 99{ 100 pid_t pid; 101 time_t start; 102 int fd[2], i; 103 char cmd[60]; 104 105 (void)atomic_fetch_add(&share[SYNC], 1); 106 while (atomic_load(&share[SYNC]) != PARALLEL) 107 usleep(10); 108 109 start = time(NULL); 110 while (time(NULL) - start < RUNTIME) { 111 share[DONE] = 0; 112 if ((pid = fork()) == 0) { 113 (void)atomic_fetch_add(&share[DONE], 1); 114 for (i = 0; i < 1000; i++) { 115 if (socketpair(PF_UNIX, SOCK_STREAM, 0, fd) == -1) 116 err(1, "socketpair()"); 117 usleep(arc4random() % 1000); 118 close(fd[0]); 119 close(fd[1]); 120 } 121 (void)atomic_fetch_add(&share[DONE], 1); 122 _exit(0); 123 } 124 if (pid == -1) 125 err(1, "fork()"); 126 setproctitle("master"); 127 while (atomic_load(&share[DONE]) == 0) 128 usleep(10); 129 snprintf(cmd, sizeof(cmd), "fstat -p %d > /dev/null 2>&1", 130 pid); 131 while (atomic_load(&share[DONE]) == 1) 132 system(cmd); 133 system(cmd); 134 if (waitpid(pid, NULL, 0) != pid) 135 err(1, "waitpid()"); 136 } 137 138 _exit(0); 139} 140 141int 142main(void) 143{ 144 pid_t pids[PARALLEL]; 145 size_t len; 146 time_t start; 147 int e, i, status; 148 149 e = 0; 150 len = PAGE_SIZE; 151 if ((share = mmap(NULL, len, PROT_READ | PROT_WRITE, 152 MAP_ANON | MAP_SHARED, -1, 0)) == MAP_FAILED) 153 err(1, "mmap"); 154 155 start = time(NULL); 156 while ((time(NULL) - start) < RUNTIME && e == 0) { 157 share[SYNC] = 0; 158 for (i = 0; i < PARALLEL; i++) { 159 if ((pids[i] = fork()) == 0) 160 test(); 161 if (pids[i] == -1) 162 err(1, "fork()"); 163 } 164 for (i = 0; i < PARALLEL; i++) { 165 if (waitpid(pids[i], &status, 0) == -1) 166 err(1, "waitpid(%d)", pids[i]); 167 if (status != 0) { 168 if (WIFSIGNALED(status)) 169 fprintf(stderr, 170 "pid %d exit signal %d\n", 171 pids[i], WTERMSIG(status)); 172 } 173 e += status == 0 ? 0 : 1; 174 } 175 } 176 177 return (e); 178} 179