1#!/bin/sh 2 3# 4# Copyright (c) 2017 Dell EMC Isilon 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# pts leak seen. 30# Fixed in r313496. 31 32[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 33kldstat -v | grep -q pty || { kldload pty || exit 0; } 34 35. ../default.cfg 36 37here=`pwd` 38cd /tmp 39sed '1,/^EOF/d' < $here/$0 > pts2.c 40mycc -o pts2 -Wall -Wextra -O2 pts2.c || exit 1 41rm -f pts2.c 42 43pts=`vmstat -m | grep pts | awk '{print $2}'` 44for i in `jot 10`; do 45 /tmp/pts2 46done 47new=`vmstat -m | grep pts | awk '{print $2}'` 48s=0 49[ $((new - pts)) -gt 1 ] && { s=1; echo "Leaked $((new - pts)) pts."; } 50 51rm -f /tmp/pts2 52exit $s 53EOF 54#include <sys/ioctl.h> 55 56#include <err.h> 57#include <fcntl.h> 58#include <stdio.h> 59 60const char *master = "/dev/ptmx"; 61int 62main(void) 63{ 64 int fd, fd2, slave; 65 char sl[80]; 66 67 if ((fd = open(master, O_RDONLY)) == -1) 68 err(1, "open(%s)", master); 69 70 if (ioctl(fd, TIOCGPTN, &slave) == -1) 71 err(1, "ioctl"); 72 73 snprintf(sl, sizeof(sl), "/dev/pts/%d", slave); 74 75 if ((fd2 = open(sl, O_RDONLY | O_EXLOCK)) == -1) 76 err(1, "open(%s)", sl); 77 78 return (0); 79} 80