1#!/bin/sh 2 3# 4# SPDX-License-Identifier: BSD-2-Clause 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 49newfs $newfs_flags md$mdstart > /dev/null 50mount /dev/md$mdstart $mntpoint 51set +e 52 53(cd $odir/../testcases/swap; ./swap -t 5m -i 40 -l 100) & 54cd $mntpoint 55timeout 5m limits -c 0 $dir/getrandom 56s=0 57while pgrep -q swap; do pkill swap; done 58cd $odir 59 60for i in `jot 6`; do 61 mount | grep -q "on $mntpoint " || break 62 umount $mntpoint && break || sleep 10 63 [ $i -eq 6 ] && 64 { echo FATAL; fstat -mf $mntpoint; exit 1; } 65done 66mdconfig -d -u $mdstart 67rm -rf $dir/getrandom 68exit $s 69 70EOF 71#include <sys/param.h> 72#include <sys/mman.h> 73#include <sys/random.h> 74#include <sys/stat.h> 75#include <sys/wait.h> 76 77#include <machine/atomic.h> 78 79#include <err.h> 80#include <errno.h> 81#include <fcntl.h> 82#include <stdio.h> 83#include <stdlib.h> 84#include <time.h> 85#include <unistd.h> 86 87static volatile u_int *share; 88 89#define PARALLEL 50 90#define RUNTIME (5 * 60) 91#define SYNC 0 92 93static void 94test(void) 95{ 96 time_t start; 97 98 atomic_add_int(&share[SYNC], 1); 99 while (share[SYNC] != PARALLEL) 100 ; 101 102 alarm(65); 103 start = time(NULL); 104 while ((time(NULL) - start) < 60) 105 getrandom((void *)arc4random(), arc4random(), arc4random() & 3); 106 107 _exit(0); 108} 109 110int 111main(void) 112{ 113 pid_t pids[PARALLEL]; 114 size_t len; 115 time_t start; 116 int e, i, status; 117 118 e = 0; 119 len = PAGE_SIZE; 120 if ((share = mmap(NULL, len, PROT_READ | PROT_WRITE, 121 MAP_ANON | MAP_SHARED, -1, 0)) == MAP_FAILED) 122 err(1, "mmap"); 123 124 start = time(NULL); 125 while ((time(NULL) - start) < RUNTIME) { 126 share[SYNC] = 0; 127 for (i = 0; i < PARALLEL; i++) { 128 if ((pids[i] = fork()) == 0) 129 test(); 130 if (pids[i] == -1) 131 err(1, "fork()"); 132 } 133 for (i = 0; i < PARALLEL; i++) { 134 if (waitpid(pids[i], &status, 0) == -1) 135 err(1, "waitpid(%d)", pids[i]); 136 e += status == 0 ? 0 : 1; 137 } 138 } 139 140 return (e); 141} 142