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#!/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.
#
# A socketpair() test scenario illustrating issues with a missing EOF
# Fixed by r361037 + r361056
. ../default.cfg
[ `id -u` -ne 0 ] && echo "Must be root!" && exit 1
dir=/tmp
odir=`pwd`
cd $dir
sed '1,/^EOF/d' < $odir/$0 > $dir/socketpair4.c
mycc -o socketpair4 -Wall -Wextra -O0 -g socketpair4.c || exit 1
rm -f socketpair4.c
cd $odir
set -e
mount | grep "on $mntpoint " | grep -q /dev/md && umount -f $mntpoint
[ -c /dev/md$mdstart ] && mdconfig -d -u $mdstart
mdconfig -a -t swap -s 1g -u $mdstart
bsdlabel -w md$mdstart auto
newfs_flags=""
newfs $newfs_flags -n md$mdstart > /dev/null
mount /dev/md$mdstart $mntpoint
set +e
cd $mntpoint
dd if=/dev/random of=input bs=4k count=100 status=none
n=1
start=` date +%s`
while [ $((` date +%s` - start)) -lt 180 ]; do
rm -f output
umount $mntpoint 2>/dev/null # busy umount
$dir/socketpair4
s=$?
[ $s -ne 0 ] && { echo "Loop #$n"; ls -l; s=1; break; }
cmp -s input output || break
[ `stat -f '%z' input` -ne ` stat -f '%z' output` ] && break
n=$((n + 1))
done
while pgrep -q swap; do
pkill swap
done
cmp -s input output || { echo "Loop #$n"; ls -l; s=1; }
[ -f socketpair4.core -a $s -eq 0 ] &&
{ ls -l socketpair4.core; mv socketpair4.core $dir; s=1; }
cd $odir
for i in `jot 6`; do
mount | grep -q "on $mntpoint " || break
umount $mntpoint && break || sleep 10
[ $i -eq 6 ] &&
{ echo FATAL; fstat -mf $mntpoint; exit 1; }
done
mdconfig -d -u $mdstart
rm -rf $dir/socketpair4
exit $s
EOF
#include <sys/param.h>
#include <sys/fcntl.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/uio.h>
#include <sys/wait.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
static void
test(void)
{
struct stat st;
off_t rd, written;
pid_t pid;
int error, from, n, status, sv[2], to;
char buf[4086];
const char *from_name, *to_name;
from_name = "input";
to_name = "output";
if ((error = socketpair(AF_UNIX, SOCK_STREAM, 0, sv)) == -1)
err(1, "socketpair");
if ((from = open(from_name, O_RDONLY)) == -1)
err(1, "open read %s", from_name);
if ((error = fstat(from, &st)) == -1)
err(1, "stat %s", from_name);
pid = fork();
if (pid == -1)
err(1, "fork");
else if (pid != 0) {
setproctitle("parent");
close(sv[1]);
written = 0;
for (;;) {
n = read(from, buf, sizeof(buf));
if (n == -1)
err(1, "read(from)");
else if (n == 0)
break;
written += n;
if (write(sv[0], buf, n) != n)
err(1, "write()");
if (error == -1)
err(1, "write");
}
if (written != st.st_size)
fprintf(stderr, "%d written, expected %d\n",
(int)written, (int)st.st_size);
close(from);
close(sv[0]);
if (waitpid(pid, &status, 0) != pid)
err(1, "waitpid(%d)", pid);
_exit(WEXITSTATUS(status));
} else {
setproctitle("child");
sleep(1);
close(from);
close(sv[0]);
if ((to = open(to_name, O_RDWR | O_CREAT, DEFFILEMODE)) == -1)
err(1, "open write %s", to_name);
rd = 0;
for (;;) {
n = read(sv[1], buf, sizeof(buf));
if (n == -1) {
if (rd == st.st_size) {
err(1, "Expected EOF on read(socket)");
break;
}
err(1, "read(socket), n=%d, rd=%d", n,
(int)rd);
}
if (n == 0)
break;
rd += n;
if (write(to, buf, n) != n)
err(1, "write()");
}
close(to);
close(sv[1]);
if (rd != st.st_size)
fprintf(stderr, "Short read %d, expected %d\n",
(int)rd, (int)st.st_size);
_exit(0);
}
}
int
main(void)
{
pid_t pid;
int status;
if ((pid = fork()) == 0)
test();
if (pid == -1)
err(1, "fork()");
if (waitpid(pid, &status, 0) == -1)
err(1, "waitpid(%d)", pid);
if (status != 0) {
if (WIFSIGNALED(status))
fprintf(stderr,
"pid %d exit signal %d\n",
pid, WTERMSIG(status));
}
return (WEXITSTATUS(status));
}
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