xref: /freebsd/tools/test/stress2/misc/devfd.sh (revision 8a272653d9fbd9fc37691c9aad6a05089b4ecb4d)
1*8a272653SPeter Holm#!/bin/sh
2*8a272653SPeter Holm
3*8a272653SPeter Holm#
4*8a272653SPeter Holm# Copyright (c) 2011 Peter Holm
5*8a272653SPeter Holm# All rights reserved.
6*8a272653SPeter Holm#
7*8a272653SPeter Holm# Redistribution and use in source and binary forms, with or without
8*8a272653SPeter Holm# modification, are permitted provided that the following conditions
9*8a272653SPeter Holm# are met:
10*8a272653SPeter Holm# 1. Redistributions of source code must retain the above copyright
11*8a272653SPeter Holm#    notice, this list of conditions and the following disclaimer.
12*8a272653SPeter Holm# 2. Redistributions in binary form must reproduce the above copyright
13*8a272653SPeter Holm#    notice, this list of conditions and the following disclaimer in the
14*8a272653SPeter Holm#    documentation and/or other materials provided with the distribution.
15*8a272653SPeter Holm#
16*8a272653SPeter Holm# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17*8a272653SPeter Holm# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18*8a272653SPeter Holm# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19*8a272653SPeter Holm# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20*8a272653SPeter Holm# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21*8a272653SPeter Holm# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22*8a272653SPeter Holm# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23*8a272653SPeter Holm# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24*8a272653SPeter Holm# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25*8a272653SPeter Holm# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26*8a272653SPeter Holm# SUCH DAMAGE.
27*8a272653SPeter Holm#
28*8a272653SPeter Holm
29*8a272653SPeter Holm# "panic: vn_lock 0xc65b5828: zero hold count" seen.
30*8a272653SPeter Holm
31*8a272653SPeter Holm# Originally found by the iknowthis test suite
32*8a272653SPeter Holm# by Tavis Ormandy <taviso  cmpxchg8b com>
33*8a272653SPeter Holm# Fixed by r227952
34*8a272653SPeter Holm
35*8a272653SPeter Holm[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
36*8a272653SPeter Holm
37*8a272653SPeter Holm. ../default.cfg
38*8a272653SPeter Holm
39*8a272653SPeter Holmodir=`pwd`
40*8a272653SPeter Holmcd /tmp
41*8a272653SPeter Holmsed '1,/^EOF/d' < $odir/$0 > devfd.c
42*8a272653SPeter Holmrm -f /tmp/devfd
43*8a272653SPeter Holmmycc -o devfd -Wall -Wextra -O2 -g devfd.c -lpthread || exit 1
44*8a272653SPeter Holmrm -f devfd.c
45*8a272653SPeter Holm
46*8a272653SPeter Holmmount | grep $mntpoint | grep -q /dev/md && umount -f $mntpoint
47*8a272653SPeter Holmmdconfig -l | grep -q md$mdstart &&  mdconfig -d -u $mdstart
48*8a272653SPeter Holm
49*8a272653SPeter Holmmdconfig -a -t swap -s 1g -u $mdstart || exit 1
50*8a272653SPeter Holmbsdlabel -w md$mdstart auto
51*8a272653SPeter Holmnewfs $newfs_flags md${mdstart}$part > /dev/null
52*8a272653SPeter Holmmount /dev/md${mdstart}$part $mntpoint
53*8a272653SPeter Holmchmod 777 $mntpoint
54*8a272653SPeter Holm
55*8a272653SPeter Holmsu $testuser -c "(cd $mntpoint; /tmp/devfd)"
56*8a272653SPeter Holm
57*8a272653SPeter Holmwhile mount | grep $mntpoint | grep -q /dev/md; do
58*8a272653SPeter Holm	umount $mntpoint || sleep 1
59*8a272653SPeter Holmdone
60*8a272653SPeter Holmmdconfig -d -u $mdstart
61*8a272653SPeter Holmrm -f /tmp/devfd
62*8a272653SPeter Holmexit
63*8a272653SPeter HolmEOF
64*8a272653SPeter Holm#include <err.h>
65*8a272653SPeter Holm#include <fcntl.h>
66*8a272653SPeter Holm#include <pthread.h>
67*8a272653SPeter Holm#include <stdio.h>
68*8a272653SPeter Holm#include <stdlib.h>
69*8a272653SPeter Holm#include <sys/param.h>
70*8a272653SPeter Holm#include <sys/stat.h>
71*8a272653SPeter Holm#include <sys/types.h>
72*8a272653SPeter Holm#include <unistd.h>
73*8a272653SPeter Holm
74*8a272653SPeter Holmint fd[3], fd2[3];
75*8a272653SPeter Holm
76*8a272653SPeter Holmvoid *
77*8a272653SPeter Holmthr1(void *arg __unused)
78*8a272653SPeter Holm{
79*8a272653SPeter Holm	int i, j;
80*8a272653SPeter Holm	char path[80];
81*8a272653SPeter Holm
82*8a272653SPeter Holm	for (i = 0; i < 100000; i++) {
83*8a272653SPeter Holm		for (j = 0; j < 3; j++) {
84*8a272653SPeter Holm			if (fd[j] != -1)
85*8a272653SPeter Holm				close(fd[j]);
86*8a272653SPeter Holm			sprintf(path, "fx%d", j);
87*8a272653SPeter Holm			fd[j] = open(path, O_RDWR | O_CREAT, 0640);
88*8a272653SPeter Holm		}
89*8a272653SPeter Holm	}
90*8a272653SPeter Holm	return (0);
91*8a272653SPeter Holm}
92*8a272653SPeter Holm
93*8a272653SPeter Holmvoid *
94*8a272653SPeter Holmthr2(void *arg __unused)
95*8a272653SPeter Holm{
96*8a272653SPeter Holm	int i, j;
97*8a272653SPeter Holm	char path[80];
98*8a272653SPeter Holm
99*8a272653SPeter Holm	for (i = 0; i < 100000; i++) {
100*8a272653SPeter Holm		for (j = 0; j < 3; j++) {
101*8a272653SPeter Holm			if (fd2[j] != -1)
102*8a272653SPeter Holm				close(fd2[j]);
103*8a272653SPeter Holm			sprintf(path, "/dev/fd/%d", j);
104*8a272653SPeter Holm			if ((fd2[j] = open(path, O_RDONLY)) != -1)
105*8a272653SPeter Holm				fchflags(fd2[j], UF_NODUMP);
106*8a272653SPeter Holm		}
107*8a272653SPeter Holm
108*8a272653SPeter Holm	}
109*8a272653SPeter Holm	return (0);
110*8a272653SPeter Holm}
111*8a272653SPeter Holm
112*8a272653SPeter Holmint
113*8a272653SPeter Holmmain(void)
114*8a272653SPeter Holm{
115*8a272653SPeter Holm	pthread_t p1, p2;
116*8a272653SPeter Holm	int r;
117*8a272653SPeter Holm
118*8a272653SPeter Holm	close(0);
119*8a272653SPeter Holm	close(1);
120*8a272653SPeter Holm	close(2);
121*8a272653SPeter Holm	if ((r = pthread_create(&p1, NULL, thr1, NULL)) != 0)
122*8a272653SPeter Holm		errc(1, r, "pthread_create");
123*8a272653SPeter Holm	if ((r = pthread_create(&p2, NULL, thr2, NULL)) != 0)
124*8a272653SPeter Holm		errc(1, r, "pthread_create");
125*8a272653SPeter Holm	pthread_join(p1, NULL);
126*8a272653SPeter Holm	pthread_join(p2, NULL);
127*8a272653SPeter Holm
128*8a272653SPeter Holm	return (0);
129*8a272653SPeter Holm}
130*8a272653SPeter Holm
131