#!/bin/sh
#
# Copyright (c) 2016 EMC Corp.
# All rights reserved.
#
# 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.
#
# Threaded version of unix_socket_detach.sh by
# Mark Johnston <markj@FreeBSD.org>
# "panic: __rw_wlock_hard: recursing but non-recursive rw unp_link_rwlock @
# ../../../kern/uipc_usrreq.c:655" seen.
# Fixed in r303855.
. ../default.cfg
cd /tmp
cat > unix_socket_detach2.c <<EOF
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <machine/atomic.h>
#include <err.h>
#include <fcntl.h>
#include <pthread.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
static sig_atomic_t done_testing;
static struct sockaddr_un sun;
static long success;
static char *file;
static void
handler(int i __unused) {
done_testing = 1;
}
static void *
t1(void *data __unused)
{
int one, sd;
while (done_testing == 0) {
sd = socket(PF_LOCAL, SOCK_STREAM, 0);
if (sd < 0)
err(1, "socket");
one = 1;
if (setsockopt(sd, SOL_SOCKET, SO_REUSEADDR, &one,
sizeof(one)) < 0)
err(1, "setsockopt");
if (bind(sd, (struct sockaddr *)&sun, sizeof(sun)) < 0) {
close(sd);
continue;
}
if (listen(sd, 10) != 0)
err(1, "listen");
usleep(random() % 10);
success++;
(void)close(sd);
(void)unlink(file);
}
return (NULL);
}
static void *
t2(void *data __unused)
{
int flags, sd;
while (done_testing == 0) {
sd = socket(PF_LOCAL, SOCK_STREAM, 0);
if (sd < 0)
err(1, "socket");
if ((flags = fcntl(sd, F_GETFL, 0)) < 0)
err(1, "fcntl(F_GETFL)");
flags |= O_NONBLOCK;
if (fcntl(sd, F_SETFL, flags) < 0)
err(1, "fcntl(F_SETFL)");
(void)connect(sd, (struct sockaddr *)&sun, sizeof(sun));
usleep(random() % 10);
(void)close(sd);
}
return (NULL);
}
int
main(void)
{
pthread_t tid[2];
int r;
file = "unix_socket_detach2.socket";
memset(&sun, 0, sizeof(sun));
sun.sun_family = AF_LOCAL;
sun.sun_len = sizeof(sun);
snprintf(sun.sun_path, sizeof(sun.sun_path), "%s", file);
signal(SIGALRM, handler);
alarm(300);
if ((r = pthread_create(&tid[0], NULL, t1, NULL)) != 0)
errc(1, r, "pthread_create");
if ((r = pthread_create(&tid[1], NULL, t2, NULL)) != 0)
errc(1, r, "pthread_create");
if ((r = pthread_join(tid[0], NULL)) != 0)
errc(1, r, "pthread_join");
if ((r = pthread_join(tid[1], NULL)) != 0)
errc(1, r, "pthread_join");
if (success < 100) {
fprintf(stderr, "FAIL with only %ld\n", success);
return (1);
}
return (0);
}
EOF
mycc -o unix_socket_detach2 -Wall -Wextra -O2 -g unix_socket_detach2.c \
-lpthread || exit 1
rm -f unix_socket_detach2.socket
/tmp/unix_socket_detach2
s=$?
rm -f unix_socket_detach2.c unix_socket_detach2 unix_socket_detach2.socket
exit $s
