#!/bin/sh
#
# SPDX-License-Identifier: BSD-2-Clause-FreeBSD
#
# Copyright (c) 2020 Peter Holm <pho@FreeBSD.org>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
# sendfile(2) test with disk read errors
# "panic: vm_page_readahead_finish: 0xfffffe000d88d758 is invalid" seen:
# https://people.freebsd.org/~pho/stress/log/sendfile25.txt
# Test scenario suggestion by chs@
# Fixed by
[ `id -u` -ne 0 ] && echo "Must be root!" && exit 1
kldstat | grep -q geom_nop || { gnop load 2>/dev/null || exit 0 &&
notloaded=1; }
gnop status || exit 1
. ../default.cfg
dir=/tmp
odir=`pwd`
cd $dir
sed '1,/^EOF/d' < $odir/$0 > $dir/sendfile25.c
mycc -o sendfile25 -Wall -Wextra -O0 -g sendfile25.c || exit 1
cd $odir
set -e
mount | grep $mntpoint | grep -q /dev/md && umount -f $mntpoint
[ -c /dev/md$mdstart ] && mdconfig -d -u $mdstart
mdconfig -a -t swap -s 2g -u $mdstart
gnop create /dev/md$mdstart
newfs $newfs_flags -n -b $((32 * 1024)) /dev/md$mdstart.nop > /dev/null
mount /dev/md$mdstart.nop $mntpoint
chmod 777 $mntpoint
set +e
dd if=/dev/zero of=$mntpoint/file bs=416k count=1 status=none
start=`date +%s`
echo 'Expect:
sendfile25: sendfile: sendfile25: read(), sendfile25.c:61: Broken pipe
Connection reset by peer'
while [ $((`date +%s` - start)) -lt 10 ]; do
umount $mntpoint
mount /dev/md$mdstart.nop $mntpoint
ls -l $mntpoint > /dev/null
gnop configure -e 5 -r 1 /dev/md$mdstart.nop
/tmp/sendfile25 $mntpoint/file /dev/null 12345
gnop configure -e 5 -r 0 /dev/md$mdstart.nop
done
umount $mntpoint
gnop destroy /dev/md$mdstart.nop
mdconfig -d -u $mdstart
[ $notloaded ] && gnop unload
rm -f /tmp/sendfile25 /tmp/sendfile25.c
exit 0
EOF
#include <sys/param.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <err.h>
#include <fcntl.h>
#include <netdb.h>
#include <netinet/in.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
int port;
char *inputFile;
char *outputFile;
int bufsize = 4096;
static void
reader(void) {
int tcpsock, msgsock;
int on;
socklen_t len;
struct sockaddr_in inetaddr, inetpeer;
int n, t, *buf, fd;
on = 1;
if ((tcpsock = socket(AF_INET, SOCK_STREAM, 0)) < 0)
err(1, "socket(), %s:%d", __FILE__, __LINE__);
if (setsockopt(tcpsock,
SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0)
err(1, "setsockopt(), %s:%d", __FILE__, __LINE__);
inetaddr.sin_family = AF_INET;
inetaddr.sin_addr.s_addr = INADDR_ANY;
inetaddr.sin_port = htons(port);
inetaddr.sin_len = sizeof(inetaddr);
if (bind(tcpsock,
(struct sockaddr *)&inetaddr, sizeof (inetaddr)) < 0)
err(1, "bind(), %s:%d", __FILE__, __LINE__);
if (listen(tcpsock, 5) < 0)
err(1, "listen(), %s:%d", __FILE__, __LINE__);
len = sizeof(inetpeer);
if ((msgsock = accept(tcpsock,
(struct sockaddr *)&inetpeer, &len)) < 0)
err(1, "accept(), %s:%d", __FILE__, __LINE__);
t = 0;
if ((buf = malloc(bufsize)) == NULL)
err(1, "malloc(%d), %s:%d", bufsize, __FILE__, __LINE__);
if ((fd = open(outputFile, O_RDWR | O_CREAT | O_TRUNC, 0640)) == -1)
err(1, "open(%s)", outputFile);
for (;;) {
if ((n = read(msgsock, buf, bufsize)) < 0)
err(1, "read(), %s:%d", __FILE__, __LINE__);
t += n;
if (n == 0)
break;
if ((write(fd, buf, n)) != n)
err(1, "write");
}
close(msgsock);
close(fd);
return;
}
static void
writer(void) {
int tcpsock, on;
struct sockaddr_in inetaddr;
struct hostent *hostent;
struct stat statb;
off_t off = 0;
size_t size;
int i, r, fd;
on = 1;
for (i = 1; i < 5; i++) {
if ((tcpsock = socket(AF_INET, SOCK_STREAM, 0)) < 0)
err(1, "socket(), %s:%d", __FILE__, __LINE__);
if (setsockopt(tcpsock,
SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0)
err(1, "setsockopt(), %s:%d", __FILE__, __LINE__);
size = getpagesize() -4;
if (setsockopt(tcpsock, SOL_SOCKET, SO_SNDBUF, (void *)&size,
sizeof(size)) < 0)
err(1, "setsockopt(SO_SNDBUF), %s:%d",
__FILE__, __LINE__);
hostent = gethostbyname ("localhost");
memcpy (&inetaddr.sin_addr.s_addr, hostent->h_addr,
sizeof (struct in_addr));
inetaddr.sin_family = AF_INET;
inetaddr.sin_port = htons(port);
inetaddr.sin_len = sizeof(inetaddr);
r = connect(tcpsock, (struct sockaddr *) &inetaddr,
sizeof(inetaddr));
if (r == 0)
break;
sleep(1);
close(tcpsock);
}
if (r < 0)
err(1, "connect(), %s:%d", __FILE__, __LINE__);
if (stat(inputFile, &statb) != 0)
err(1, "stat(%s)", inputFile);
if ((fd = open(inputFile, O_RDONLY)) == -1)
err(1, "open(%s)", inputFile);
off = 12 * 32 * 1024;
if (sendfile(fd, tcpsock, 0, statb.st_size, NULL, &off, 0) == -1)
err(1, "sendfile");
return;
}
int
main(int argc, char **argv)
{
pid_t pid;
if (argc != 4) {
fprintf(stderr, "Usage: %s <inputFile outputFile portNumber\n",
argv[0]);
return (1);
}
inputFile = argv[1];
outputFile = argv[2];
port = atoi(argv[3]);
if ((pid = fork()) == 0) {
writer();
exit(EXIT_SUCCESS);
} else if (pid > 0) {
reader();
kill(pid, SIGINT);
} else
err(1, "fork(), %s:%d", __FILE__, __LINE__);
return (0);
}
