1*8a272653SPeter Holm#!/bin/sh 2*8a272653SPeter Holm 3*8a272653SPeter Holm# 4*8a272653SPeter Holm# Copyright (c) 2016 EMC Corp. 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# pty(4) test scenario. 30*8a272653SPeter Holm 31*8a272653SPeter Holm# "panic: make_dev_credv: bad si_name (error=17, si_name=ptysn)" seen. 32*8a272653SPeter Holm# https://people.freebsd.org/~pho/stress/log/pty.txt 33*8a272653SPeter Holm 34*8a272653SPeter Holm# /dev/pty[l-sL-S][0-9a-v] Pseudo-terminal master devices. 35*8a272653SPeter Holm# /dev/tty[l-sL-S][0-9a-v] Pseudo-terminal slave devices. 36*8a272653SPeter Holm 37*8a272653SPeter Holm[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 38*8a272653SPeter Holm 39*8a272653SPeter Holm. ../default.cfg 40*8a272653SPeter Holm 41*8a272653SPeter Holmkldstat -v | grep -q pty || { kldload pty || exit 0; } 42*8a272653SPeter Holm 43*8a272653SPeter Holmhere=`pwd` 44*8a272653SPeter Holmcd /tmp 45*8a272653SPeter Holmsed '1,/^EOF/d' < $here/$0 > pty.c 46*8a272653SPeter Holmmycc -o pty -Wall -Wextra -O2 pty.c || exit 1 47*8a272653SPeter Holmrm -f pty.c 48*8a272653SPeter Holm 49*8a272653SPeter Holmsu $testuser -c /tmp/pty 50*8a272653SPeter Holm 51*8a272653SPeter Holmrm -f /tmp/pty 52*8a272653SPeter Holmexit 53*8a272653SPeter HolmEOF 54*8a272653SPeter Holm#include <sys/types.h> 55*8a272653SPeter Holm#include <sys/wait.h> 56*8a272653SPeter Holm 57*8a272653SPeter Holm#include <err.h> 58*8a272653SPeter Holm#include <errno.h> 59*8a272653SPeter Holm#include <fcntl.h> 60*8a272653SPeter Holm#include <fts.h> 61*8a272653SPeter Holm#include <stdlib.h> 62*8a272653SPeter Holm#include <stdio.h> 63*8a272653SPeter Holm#include <time.h> 64*8a272653SPeter Holm#include <unistd.h> 65*8a272653SPeter Holm 66*8a272653SPeter Holm#define PARALLEL 4 67*8a272653SPeter Holm#define RUNTIME 300 68*8a272653SPeter Holm 69*8a272653SPeter Holmchar path[80]; 70*8a272653SPeter Holm 71*8a272653SPeter Holmvoid 72*8a272653SPeter Holmchurn(char *path) 73*8a272653SPeter Holm{ 74*8a272653SPeter Holm 75*8a272653SPeter Holm FTS *fts; 76*8a272653SPeter Holm FTSENT *p; 77*8a272653SPeter Holm time_t start; 78*8a272653SPeter Holm int fd, ftsoptions; 79*8a272653SPeter Holm char *args[2]; 80*8a272653SPeter Holm 81*8a272653SPeter Holm ftsoptions = FTS_PHYSICAL; 82*8a272653SPeter Holm args[0] = path; 83*8a272653SPeter Holm args[1] = 0; 84*8a272653SPeter Holm 85*8a272653SPeter Holm setproctitle("churn"); 86*8a272653SPeter Holm start = time(NULL); 87*8a272653SPeter Holm while (time(NULL) - start < RUNTIME) { 88*8a272653SPeter Holm if ((fts = fts_open(args, ftsoptions, NULL)) == NULL) 89*8a272653SPeter Holm err(1, "fts_open"); 90*8a272653SPeter Holm 91*8a272653SPeter Holm while ((p = fts_read(fts)) != NULL) { 92*8a272653SPeter Holm if (p->fts_info == FTS_D || 93*8a272653SPeter Holm p->fts_info == FTS_DP) 94*8a272653SPeter Holm continue; 95*8a272653SPeter Holm if ((fd = open(p->fts_path, O_RDWR)) == -1) 96*8a272653SPeter Holm if ((fd = open(p->fts_path, O_WRONLY)) == -1) 97*8a272653SPeter Holm if ((fd = open(p->fts_path, O_RDONLY)) == -1) 98*8a272653SPeter Holm continue; 99*8a272653SPeter Holm usleep(arc4random() % 1000); 100*8a272653SPeter Holm close(fd); 101*8a272653SPeter Holm 102*8a272653SPeter Holm } 103*8a272653SPeter Holm 104*8a272653SPeter Holm if (errno != 0 && errno != ENOENT) 105*8a272653SPeter Holm err(1, "fts_read"); 106*8a272653SPeter Holm if (fts_close(fts) == -1) 107*8a272653SPeter Holm err(1, "fts_close()"); 108*8a272653SPeter Holm } 109*8a272653SPeter Holm 110*8a272653SPeter Holm _exit(0); 111*8a272653SPeter Holm} 112*8a272653SPeter Holm 113*8a272653SPeter Holmvoid 114*8a272653SPeter Holmpty(void) 115*8a272653SPeter Holm{ 116*8a272653SPeter Holm int fd[512], i, j, n; 117*8a272653SPeter Holm char c1, c2; 118*8a272653SPeter Holm 119*8a272653SPeter Holm n = 0; 120*8a272653SPeter Holm c1 = 'l'; 121*8a272653SPeter Holm for (i = 0; i < 16; i++) { 122*8a272653SPeter Holm c2 = '0'; 123*8a272653SPeter Holm for (j = 0; j < 32; j++) { 124*8a272653SPeter Holm snprintf(path, sizeof(path), "/dev/pty%c%c", c1, c2); 125*8a272653SPeter Holm fd[n++] = open(path, O_RDWR); 126*8a272653SPeter Holm if (c2 == '9') 127*8a272653SPeter Holm c2 = 'a'; 128*8a272653SPeter Holm else 129*8a272653SPeter Holm c2++; 130*8a272653SPeter Holm } 131*8a272653SPeter Holm if (c1 == 's') 132*8a272653SPeter Holm c1 = 'L'; 133*8a272653SPeter Holm else 134*8a272653SPeter Holm c1++; 135*8a272653SPeter Holm } 136*8a272653SPeter Holm 137*8a272653SPeter Holm for (i = 0; i < n; i++) 138*8a272653SPeter Holm if (fd[i] != -1) 139*8a272653SPeter Holm close(fd[i]); 140*8a272653SPeter Holm} 141*8a272653SPeter Holm 142*8a272653SPeter Holmint 143*8a272653SPeter Holmmain(void) 144*8a272653SPeter Holm{ 145*8a272653SPeter Holm int i; 146*8a272653SPeter Holm 147*8a272653SPeter Holm time_t start; 148*8a272653SPeter Holm 149*8a272653SPeter Holm for (i = 0; i < PARALLEL; i++) 150*8a272653SPeter Holm if (fork() == 0) 151*8a272653SPeter Holm churn("/dev"); 152*8a272653SPeter Holm 153*8a272653SPeter Holm start = time(NULL); 154*8a272653SPeter Holm while (time(NULL) - start < RUNTIME) 155*8a272653SPeter Holm pty(); 156*8a272653SPeter Holm 157*8a272653SPeter Holm for (i = 0; i < PARALLEL; i++) 158*8a272653SPeter Holm wait(NULL); 159*8a272653SPeter Holm 160*8a272653SPeter Holm return (0); 161*8a272653SPeter Holm} 162