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# pty(4) test scenario. 30 31# "panic: make_dev_credv: bad si_name (error=17, si_name=ptysn)" seen. 32# https://people.freebsd.org/~pho/stress/log/pty.txt 33 34# /dev/pty[l-sL-S][0-9a-v] Pseudo-terminal master devices. 35# /dev/tty[l-sL-S][0-9a-v] Pseudo-terminal slave devices. 36 37[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 38 39. ../default.cfg 40 41kldstat -v | grep -q pty || { kldload pty || exit 0; } 42 43here=`pwd` 44cd /tmp 45sed '1,/^EOF/d' < $here/$0 > pty.c 46mycc -o pty -Wall -Wextra -O2 pty.c || exit 1 47rm -f pty.c 48 49su $testuser -c /tmp/pty 50 51rm -f /tmp/pty 52exit 53EOF 54#include <sys/types.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 <stdlib.h> 62#include <stdio.h> 63#include <time.h> 64#include <unistd.h> 65 66#define PARALLEL 4 67#define RUNTIME 300 68 69char path[80]; 70 71void 72churn(char *path) 73{ 74 75 FTS *fts; 76 FTSENT *p; 77 time_t start; 78 int fd, ftsoptions; 79 char *args[2]; 80 81 ftsoptions = FTS_PHYSICAL; 82 args[0] = path; 83 args[1] = 0; 84 85 setproctitle("churn"); 86 start = time(NULL); 87 while (time(NULL) - start < RUNTIME) { 88 if ((fts = fts_open(args, ftsoptions, NULL)) == NULL) 89 err(1, "fts_open"); 90 91 while ((p = fts_read(fts)) != NULL) { 92 if (p->fts_info == FTS_D || 93 p->fts_info == FTS_DP) 94 continue; 95 if ((fd = open(p->fts_path, O_RDWR)) == -1) 96 if ((fd = open(p->fts_path, O_WRONLY)) == -1) 97 if ((fd = open(p->fts_path, O_RDONLY)) == -1) 98 continue; 99 usleep(arc4random() % 1000); 100 close(fd); 101 102 } 103 104 if (errno != 0 && errno != ENOENT) 105 err(1, "fts_read"); 106 if (fts_close(fts) == -1) 107 err(1, "fts_close()"); 108 } 109 110 _exit(0); 111} 112 113void 114pty(void) 115{ 116 int fd[512], i, j, n; 117 char c1, c2; 118 119 n = 0; 120 c1 = 'l'; 121 for (i = 0; i < 16; i++) { 122 c2 = '0'; 123 for (j = 0; j < 32; j++) { 124 snprintf(path, sizeof(path), "/dev/pty%c%c", c1, c2); 125 fd[n++] = open(path, O_RDWR); 126 if (c2 == '9') 127 c2 = 'a'; 128 else 129 c2++; 130 } 131 if (c1 == 's') 132 c1 = 'L'; 133 else 134 c1++; 135 } 136 137 for (i = 0; i < n; i++) 138 if (fd[i] != -1) 139 close(fd[i]); 140} 141 142int 143main(void) 144{ 145 int i; 146 147 time_t start; 148 149 for (i = 0; i < PARALLEL; i++) 150 if (fork() == 0) 151 churn("/dev"); 152 153 start = time(NULL); 154 while (time(NULL) - start < RUNTIME) 155 pty(); 156 157 for (i = 0; i < PARALLEL; i++) 158 wait(NULL); 159 160 return (0); 161} 162