1#!/bin/sh 2 3# 4# Copyright (c) 2008 Peter Holm <pho@FreeBSD.org> 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# $FreeBSD$ 29# 30 31# Regression test. Causes panic on 6.1 32 33odir=`pwd` 34dir=/tmp 35 36cd $dir 37sed '1,/^EOF/d' < $odir/$0 > $dir/revoke.c 38cc -o revoke -Wall revoke.c 39rm -f revoke.c 40 41n=100 # Number of times to test 42for i in `jot $n`; do 43 ./revoke /dev/ttyv9& 44 ./revoke /dev/ttyva& 45 ./revoke /dev/ttyvb& 46 ./revoke /dev/ttyvc& 47 for j in `jot 4`; do 48 wait 49 done 50done 51 52#rm -f revoke 53 54exit 55EOF 56/* By Martin Blapp, <mb@imp.ch> <mbr@FreeBSD.org> */ 57 58#include <stdlib.h> 59#include <stdio.h> 60#include <unistd.h> 61#include <fcntl.h> 62#include <err.h> 63#include <sys/ioctl.h> 64#include <sys/wait.h> 65#include <string.h> 66 67/*#define TTY "/dev/ttyv9"*/ /* should be totally unused */ 68#define CTTY "/dev/tty" 69 70int 71main(int argc, char **argv) 72{ 73 int ttyfd; 74 pid_t pid; 75 76 if (argc != 2) { 77 fprintf(stderr, "Usage: %s /dev/ttyv?\n", argv[0]); 78 return 1; 79 } 80 81 /* Get rid of my ctty. */ 82 printf("Parent starting: pid %d\n", getpid()); 83 pid = fork(); 84 if (pid < 0) { 85 err(1, "fork"); 86 exit(1); 87 } else if (pid > 0) { 88 int status; 89 /* parent */ 90 waitpid(pid, &status, 0); 91 exit(0); 92 } 93 /* child */ 94 printf("Child: pid %d\n", getpid()); 95 96 if (setsid() < 0) { 97 err(1, "setsid"); 98 exit(1); 99 } 100 ttyfd = open(argv[1], O_RDWR); 101 if (ttyfd < 0) { 102 err(1, "open(%s)", argv[1]); 103 exit(1); 104 } 105 if (ioctl(ttyfd, TIOCSCTTY) < 0) { 106 err(1, "ioctl(TIOCSCTTY)"); 107 exit(1); 108 } 109 if (revoke(argv[1]) < 0) { 110 err(1, "revoke(%s)", argv[1]); 111 exit(1); 112 } 113 if (open(CTTY, O_RDWR) < 0) { 114 err(1, "open(%s)", CTTY); 115 exit(1); 116 } 117 return 0; 118} 119