1#!/bin/sh 2 3# 4# Copyright (c) 2017 Dell EMC Isilon 5# All rights reserved. 6# 7# Redistribution and use in source and binary forms, with or without 8# modification, are permitted provided that the following conditions 9# are met: 10# 1. Redistributions of source code must retain the above copyright 11# notice, this list of conditions and the following disclaimer. 12# 2. Redistributions in binary form must reproduce the above copyright 13# notice, this list of conditions and the following disclaimer in the 14# documentation and/or other materials provided with the distribution. 15# 16# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26# SUCH DAMAGE. 27# 28 29# mknod(2) regression test 30# "panic: ffs_write: type 0xca2b02d0 8 (0,3)" seen. 31# Reported by: Dmitry Vyukov <dvyukov@google.com> 32# Fixed by r324853 33 34. ../default.cfg 35[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 36 37dir=/tmp 38odir=`pwd` 39cd $dir 40sed '1,/^EOF/d' < $odir/$0 > $dir/mknod.c 41mycc -o mknod -Wall -Wextra -O0 -g mknod.c || exit 1 42rm -f mknod.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 54cd $mntpoint 55$dir/mknod $mntpoint 56s=$? 57[ -f mknod.core -a $s -eq 0 ] && 58 { ls -l mknod.core; mv mknod.core /tmp; s=1; } 59cd $odir 60 61for i in `jot 6`; do 62 mount | grep -q "on $mntpoint " || break 63 umount $mntpoint && break || sleep 10 64done 65[ $i -eq 6 ] && exit 1 66mdconfig -d -u $mdstart 67rm -rf $dir/mknod 68exit $s 69 70EOF 71#include <sys/param.h> 72#include <sys/mman.h> 73#include <sys/stat.h> 74#include <sys/wait.h> 75 76#include <machine/atomic.h> 77 78#include <err.h> 79#include <errno.h> 80#include <fcntl.h> 81#include <stdio.h> 82#include <stdlib.h> 83#include <time.h> 84#include <unistd.h> 85 86static volatile u_int *share; 87static char *mp; 88 89#define PARALLEL 4 90#define RUNTIME (1 * 60) 91#define SYNC 0 92 93static void 94test(void) 95{ 96 dev_t dev; 97 mode_t mode; 98 time_t start; 99 int fd, n, r; 100 char path[128]; 101 102 atomic_add_int(&share[SYNC], 1); 103 while (share[SYNC] != PARALLEL) 104 ; 105 n = 0; 106 snprintf(path, sizeof(path), "%s/node.%06d.%d", mp, getpid(), n); 107 start = time(NULL); 108 while ((time(NULL) - start) < RUNTIME) { 109 dev = makedev(arc4random(), arc4random()); 110 mode = arc4random() % 0x10000; 111 r = mknod(path, mode, dev); 112 if (r == 0) { 113 if ((fd = open(path, O_RDWR)) != -1) { 114 write(fd, "x", 1); 115 close(fd); 116 } 117 unlink(path); 118 n++; 119 snprintf(path, sizeof(path), "%s/node.%06d.%d", mp, 120 getpid(), n); 121 } 122 } 123 124 _exit(0); 125} 126 127int 128main(int argc, char *argv[]) 129{ 130 pid_t pids[PARALLEL]; 131 size_t len; 132 int e, i, status; 133 134 if (argc != 2) 135 return (1); 136 mp = argv[1]; 137 e = 0; 138 len = PAGE_SIZE; 139 if ((share = mmap(NULL, len, PROT_READ | PROT_WRITE, 140 MAP_ANON | MAP_SHARED, -1, 0)) == MAP_FAILED) 141 err(1, "mmap"); 142 143 share[SYNC] = 0; 144 for (i = 0; i < PARALLEL; i++) { 145 if ((pids[i] = fork()) == 0) 146 test(); 147 if (pids[i] == -1) 148 err(1, "fork()"); 149 } 150 for (i = 0; i < PARALLEL; i++) { 151 if (waitpid(pids[i], &status, 0) == -1) 152 err(1, "waitpid(%d)", pids[i]); 153 if (status != 0) { 154 if (WIFSIGNALED(status)) 155 fprintf(stderr, 156 "pid %d exit signal %d\n", 157 pids[i], WTERMSIG(status)); 158 } 159 e += status == 0 ? 0 : 1; 160 } 161 162 return (e); 163} 164