1#!/bin/sh 2 3# 4# SPDX-License-Identifier: BSD-2-Clause-FreeBSD 5# 6# Copyright (c) 2019 Dell EMC Isilon 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# getrandom() non threaded test 31# Reset seen on i386 32 33. ../default.cfg 34[ `id -u` -ne 0 ] && echo "Must be root!" && exit 1 35[ `uname -m` = "i386" ] || exit 0 36 37dir=/tmp 38odir=`pwd` 39cd $dir 40sed '1,/^EOF/d' < $odir/$0 > $dir/getrandom.c 41mycc -o getrandom -Wall -Wextra -O0 -g getrandom.c || exit 1 42rm -f getrandom.c 43cd $odir 44 45set -e 46mount | grep "on $mntpoint " | grep -q /dev/md && umount -f $mntpoint 47[ -c /dev/md$mdstart ] && mdconfig -d -u $mdstart 48mdconfig -a -t swap -s 2g -u $mdstart 49bsdlabel -w md$mdstart auto 50newfs $newfs_flags md${mdstart}$part > /dev/null 51mount /dev/md${mdstart}$part $mntpoint 52set +e 53 54(cd $odir/../testcases/swap; ./swap -t 5m -i 40 -l 100) & 55cd $mntpoint 56timeout 5m limits -c 0 $dir/getrandom 57s=0 58while pgrep -q swap; do pkill swap; done 59cd $odir 60 61for i in `jot 6`; do 62 mount | grep -q "on $mntpoint " || break 63 umount $mntpoint && break || sleep 10 64 [ $i -eq 6 ] && 65 { echo FATAL; fstat -mf $mntpoint; exit 1; } 66done 67mdconfig -d -u $mdstart 68rm -rf $dir/getrandom 69exit $s 70 71EOF 72#include <sys/param.h> 73#include <sys/mman.h> 74#include <sys/random.h> 75#include <sys/stat.h> 76#include <sys/wait.h> 77 78#include <machine/atomic.h> 79 80#include <err.h> 81#include <errno.h> 82#include <fcntl.h> 83#include <stdio.h> 84#include <stdlib.h> 85#include <time.h> 86#include <unistd.h> 87 88static volatile u_int *share; 89 90#define PARALLEL 50 91#define RUNTIME (5 * 60) 92#define SYNC 0 93 94static void 95test(void) 96{ 97 time_t start; 98 99 atomic_add_int(&share[SYNC], 1); 100 while (share[SYNC] != PARALLEL) 101 ; 102 103 alarm(65); 104 start = time(NULL); 105 while ((time(NULL) - start) < 60) 106 getrandom((void *)arc4random(), arc4random(), arc4random() & 3); 107 108 _exit(0); 109} 110 111int 112main(void) 113{ 114 pid_t pids[PARALLEL]; 115 size_t len; 116 time_t start; 117 int e, i, status; 118 119 e = 0; 120 len = PAGE_SIZE; 121 if ((share = mmap(NULL, len, PROT_READ | PROT_WRITE, 122 MAP_ANON | MAP_SHARED, -1, 0)) == MAP_FAILED) 123 err(1, "mmap"); 124 125 start = time(NULL); 126 while ((time(NULL) - start) < RUNTIME) { 127 share[SYNC] = 0; 128 for (i = 0; i < PARALLEL; i++) { 129 if ((pids[i] = fork()) == 0) 130 test(); 131 if (pids[i] == -1) 132 err(1, "fork()"); 133 } 134 for (i = 0; i < PARALLEL; i++) { 135 if (waitpid(pids[i], &status, 0) == -1) 136 err(1, "waitpid(%d)", pids[i]); 137 e += status == 0 ? 0 : 1; 138 } 139 } 140 141 return (e); 142} 143