1#!/bin/sh 2 3# 4# Copyright (c) 2016 EMC Corp. 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# "panic: Assertion !tty_gone(tp) failed at ttydevsw.h:153" seen. 30# https://people.freebsd.org/~pho/stress/log/posix_openpt2.txt 31# Fixed by r312077 32 33[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 34 35. ../default.cfg 36 37here=`pwd` 38cd /tmp 39sed '1,/^EOF/d' < $here/$0 > posix_openpt2.c 40mycc -o posix_openpt2 -Wall -Wextra -O2 posix_openpt2.c -lutil || exit 1 41rm -f posix_openpt2.c 42 43/tmp/posix_openpt2 & 44 45while kill -0 $! 2>/dev/null; do 46 $here/../testcases/swap/swap -t 2m -i 20 47done 48wait 49 50rm -f /tmp/posix_openpt2 51exit 0 52EOF 53#include <sys/types.h> 54#include <sys/ioctl.h> 55#include <sys/wait.h> 56 57#include <err.h> 58#include <errno.h> 59#include <fcntl.h> 60#include <fts.h> 61#include <libutil.h> 62#include <stdint.h> 63#include <stdio.h> 64#include <stdlib.h> 65#include <string.h> 66#include <termios.h> 67#include <time.h> 68#include <unistd.h> 69 70#define LOOPS 10 71#define PARALLEL 2 72#define RUNTIME 300 73 74void 75churn(char *path) 76{ 77 FTS *fts; 78 FTSENT *p; 79 time_t start; 80 int fd, ftsoptions; 81 char *args[2]; 82 83 ftsoptions = FTS_PHYSICAL; 84 args[0] = path; 85 args[1] = 0; 86 87 setproctitle("churn"); 88 start = time(NULL); 89 while (time(NULL) - start < RUNTIME / LOOPS) { 90 if ((fts = fts_open(args, ftsoptions, NULL)) == NULL) 91 err(1, "fts_open"); 92 93 while ((p = fts_read(fts)) != NULL) { 94 if (p->fts_info == FTS_D || 95 p->fts_info == FTS_DP) 96 continue; 97 if ((fd = open(p->fts_path, O_RDONLY)) > 0) 98 close(fd); 99 100 } 101 102 if (errno != 0 && errno != ENOENT) 103 err(1, "fts_read"); 104 if (fts_close(fts) == -1) 105 err(1, "fts_close()"); 106 } 107 108 _exit(0); 109} 110 111void 112pty(void) 113{ 114 time_t start; 115 int masterfd, slavefd; 116 char *slave; 117 118 start = time(NULL); 119 while (time(NULL) - start < RUNTIME / LOOPS) { 120 if ((masterfd = posix_openpt(O_RDWR | O_NOCTTY)) == -1) 121 err(1, "posix_openpt"); 122 if ((slave = ptsname (masterfd)) == NULL) 123 err(1, "ptsname"); 124 if ((slavefd = open(slave, O_RDWR|O_NOCTTY)) == -1) 125 err(1, "open(%s)", slave); 126 usleep(arc4random() % 10000); 127 close(slavefd); 128 close(masterfd); 129 } 130 _exit(0); 131} 132 133int 134main(void) 135{ 136 int i, j; 137 138 for (j = 0; j < LOOPS; j++) { 139 for (i = 0; i < PARALLEL; i++) { 140 if (fork() == 0) 141 pty(); 142 } 143 for (i = 0; i < PARALLEL; i++) { 144 if (fork() == 0) 145 churn("/dev/pts"); 146 } 147 for (i = 0; i < 2 * PARALLEL; i++) 148 wait(NULL); 149 } 150 151 return (0); 152} 153