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 49newfs $newfs_flags md$mdstart > /dev/null 50mount /dev/md$mdstart $mntpoint 51set +e 52 53cd $mntpoint 54$dir/mknod $mntpoint 55s=$? 56[ -f mknod.core -a $s -eq 0 ] && 57 { ls -l mknod.core; mv mknod.core /tmp; s=1; } 58cd $odir 59 60for i in `jot 6`; do 61 mount | grep -q "on $mntpoint " || break 62 umount $mntpoint && break || sleep 10 63done 64[ $i -eq 6 ] && exit 1 65mdconfig -d -u $mdstart 66rm -rf $dir/mknod 67exit $s 68 69EOF 70#include <sys/param.h> 71#include <sys/mman.h> 72#include <sys/stat.h> 73#include <sys/wait.h> 74 75#include <machine/atomic.h> 76 77#include <err.h> 78#include <errno.h> 79#include <fcntl.h> 80#include <stdio.h> 81#include <stdlib.h> 82#include <time.h> 83#include <unistd.h> 84 85static volatile u_int *share; 86static char *mp; 87 88#define PARALLEL 4 89#define RUNTIME (1 * 60) 90#define SYNC 0 91 92static void 93test(void) 94{ 95 dev_t dev; 96 mode_t mode; 97 time_t start; 98 int fd, n, r; 99 char path[128]; 100 101 atomic_add_int(&share[SYNC], 1); 102 while (share[SYNC] != PARALLEL) 103 ; 104 n = 0; 105 snprintf(path, sizeof(path), "%s/node.%06d.%d", mp, getpid(), n); 106 start = time(NULL); 107 while ((time(NULL) - start) < RUNTIME) { 108 dev = makedev(arc4random(), arc4random()); 109 mode = arc4random() % 0x10000; 110 r = mknod(path, mode, dev); 111 if (r == 0) { 112 if ((fd = open(path, O_RDWR)) != -1) { 113 write(fd, "x", 1); 114 close(fd); 115 } 116 unlink(path); 117 n++; 118 snprintf(path, sizeof(path), "%s/node.%06d.%d", mp, 119 getpid(), n); 120 } 121 } 122 123 _exit(0); 124} 125 126int 127main(int argc, char *argv[]) 128{ 129 pid_t pids[PARALLEL]; 130 size_t len; 131 int e, i, status; 132 133 if (argc != 2) 134 return (1); 135 mp = argv[1]; 136 e = 0; 137 len = PAGE_SIZE; 138 if ((share = mmap(NULL, len, PROT_READ | PROT_WRITE, 139 MAP_ANON | MAP_SHARED, -1, 0)) == MAP_FAILED) 140 err(1, "mmap"); 141 142 share[SYNC] = 0; 143 for (i = 0; i < PARALLEL; i++) { 144 if ((pids[i] = fork()) == 0) 145 test(); 146 if (pids[i] == -1) 147 err(1, "fork()"); 148 } 149 for (i = 0; i < PARALLEL; i++) { 150 if (waitpid(pids[i], &status, 0) == -1) 151 err(1, "waitpid(%d)", pids[i]); 152 if (status != 0) { 153 if (WIFSIGNALED(status)) 154 fprintf(stderr, 155 "pid %d exit signal %d\n", 156 pids[i], WTERMSIG(status)); 157 } 158 e += status == 0 ? 0 : 1; 159 } 160 161 return (e); 162} 163