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[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 30 31# Test scenario suggestion by alc@ 32 33# sendfile(2) using SF_NOCACHE and a mmap'ed file with touched pages. 34# "panic: vm_page_free_toq: freeing mapped page 0xc49e53bc" seen: 35# https://people.freebsd.org/~pho/stress/log/sendfile12.txt 36 37. ../default.cfg 38 39odir=`pwd` 40cd /tmp 41sed '1,/^EOF/d' < $odir/$0 > sendfile12.c 42mycc -o sendfile12 -Wall -O0 sendfile12.c -pthread || exit 1 43rm -f sendfile12.c 44 45set -e 46mount | grep $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 $newfs_flags /dev/md$mdstart > /dev/null 50 51mount /dev/md${mdstart} $mntpoint 52chmod 777 $mntpoint 53set +e 54 55cd $mntpoint 56dd if=/dev/zero of=file bs=1m count=512 status=none 57(cd $odir/../testcases/swap; ./swap -t 5m -i 20 -h -l 100) > /dev/null & 58sleep 5 59/tmp/sendfile12 file output 12345; s=$? 60cd $odir 61while pkill swap; do 62 sleep 1 63done 64wait 65 66while mount | grep $mntpoint | grep -q /dev/md; do 67 umount $mntpoint || sleep 1 68done 69checkfs /dev/md${mdstart} || s=$? 70mdconfig -d -u $mdstart 71rm -f /tmp/sendfile12 72exit $s 73EOF 74#include <sys/param.h> 75#include <sys/mman.h> 76#include <sys/socket.h> 77#include <sys/stat.h> 78#include <sys/wait.h> 79 80#include <netinet/in.h> 81 82#include <err.h> 83#include <fcntl.h> 84#include <netdb.h> 85#include <signal.h> 86#include <stdio.h> 87#include <stdlib.h> 88#include <string.h> 89#include <unistd.h> 90 91#define BUFSIZE 8192 92 93static int port; 94static char *inputFile; 95static char *outputFile; 96 97static void 98reader(void) { 99 struct sockaddr_in inetaddr, inetpeer; 100 socklen_t len; 101 int tcpsock, msgsock; 102 int *buf, fd, n, on, t __unused; 103 104 on = 1; 105 if ((tcpsock = socket(AF_INET, SOCK_STREAM, 0)) < 0) 106 err(1, "socket(), %s:%d", __FILE__, __LINE__); 107 108 if (setsockopt(tcpsock, 109 SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0) 110 err(1, "setsockopt(), %s:%d", __FILE__, __LINE__); 111 112 inetaddr.sin_family = AF_INET; 113 inetaddr.sin_addr.s_addr = INADDR_ANY; 114 inetaddr.sin_port = htons(port); 115 inetaddr.sin_len = sizeof(inetaddr); 116 117 if (bind(tcpsock, 118 (struct sockaddr *)&inetaddr, sizeof (inetaddr)) < 0) 119 err(1, "bind(), %s:%d", __FILE__, __LINE__); 120 121 if (listen(tcpsock, 5) < 0) 122 err(1, "listen(), %s:%d", __FILE__, __LINE__); 123 124 len = sizeof(inetpeer); 125 if ((msgsock = accept(tcpsock, 126 (struct sockaddr *)&inetpeer, &len)) < 0) 127 err(1, "accept(), %s:%d", __FILE__, __LINE__); 128 129 t = 0; 130 if ((buf = malloc(BUFSIZE)) == NULL) 131 err(1, "malloc(%d), %s:%d", BUFSIZE, __FILE__, __LINE__); 132 133 if ((fd = open(outputFile, O_RDWR | O_CREAT | O_TRUNC, 0640)) == 134 -1) 135 err(1, "open(%s)", outputFile); 136 137 for (;;) { 138 if ((n = read(msgsock, buf, BUFSIZE)) < 0) 139 err(1, "read(), %s:%d", __FILE__, __LINE__); 140 t += n; 141 if (n == 0) break; 142 143 if ((write(fd, buf, n)) != n) 144 err(1, "write"); 145 } 146 close(msgsock); 147 close(fd); 148 return; 149} 150 151static void 152writer(void) { 153 struct sockaddr_in inetaddr; 154 struct hostent *hostent; 155 struct stat statb; 156 off_t off = 0; 157 size_t size; 158 int i, fd, on, r, tcpsock; 159 char *cp; 160 161 on = 1; 162 for (i = 1; i < 5; i++) { 163 if ((tcpsock = socket(AF_INET, SOCK_STREAM, 0)) < 0) 164 err(1, "socket(), %s:%d", __FILE__, __LINE__); 165 166 if (setsockopt(tcpsock, 167 SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0) 168 err(1, "setsockopt(), %s:%d", __FILE__, __LINE__); 169 170 size = getpagesize() -4; 171 if (setsockopt(tcpsock, 172 SOL_SOCKET, SO_SNDBUF, (void *)&size, sizeof(size)) < 0) 173 err(1, "setsockopt(SO_SNDBUF), %s:%d", __FILE__, 174 __LINE__); 175 176 hostent = gethostbyname ("localhost"); 177 memcpy (&inetaddr.sin_addr.s_addr, hostent->h_addr, 178 sizeof (struct in_addr)); 179 180 inetaddr.sin_family = AF_INET; 181 inetaddr.sin_port = htons(port); 182 inetaddr.sin_len = sizeof(inetaddr); 183 184 r = connect(tcpsock, (struct sockaddr *) &inetaddr, 185 sizeof(inetaddr)); 186 if (r == 0) 187 break; 188 sleep(1); 189 close(tcpsock); 190 } 191 if (r < 0) 192 err(1, "connect(), %s:%d", __FILE__, __LINE__); 193 194 if (stat(inputFile, &statb) != 0) 195 err(1, "stat(%s)", inputFile); 196 197 if ((fd = open(inputFile, O_RDWR)) == -1) 198 err(1, "open(%s)", inputFile); 199 200 if ((cp = mmap(NULL, statb.st_size, PROT_READ | PROT_WRITE, 201 MAP_SHARED, fd, 0)) == MAP_FAILED) 202 err(1, "mmap"); 203 cp[0] = 1; 204 205 if (sendfile(fd, tcpsock, 0, statb.st_size, NULL, &off, SF_NOCACHE) 206 == -1) 207 err(1, "sendfile"); 208 209 return; 210} 211 212int 213main(int argc, char **argv) 214{ 215 pid_t pid; 216 int e, s; 217 218 if (argc != 4) { 219 fprintf(stderr, 220 "Usage: %s <inputFile outputFile portNumber\n", argv[0]); 221 return (1); 222 } 223 e = 0; 224 inputFile = argv[1]; 225 outputFile = argv[2]; 226 port = atoi(argv[3]); 227 228 if ((pid = fork()) == 0) { 229 writer(); 230 exit(EXIT_SUCCESS); 231 } else if (pid > 0) { 232 reader(); 233 kill(pid, SIGINT); 234 waitpid(pid, &s, 0); 235 if (s != 0) 236 e = 1; 237 } else 238 err(1, "fork(), %s:%d", __FILE__, __LINE__); 239 240 return (e); 241} 242