1#!/bin/sh 2 3# 4# Copyright (c) 2015 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. ../default.cfg 30 31# Regression test for 32# https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=203162 33 34# FAIL 35# 1001 82102 907 0 20 0 6484 2480 wait S+ 0 0:00,01 /bin/sh ./mkfifo3.sh 36# 1001 82113 82102 0 52 0 3832 1604 fifoow I+ 0 0:03,91 /tmp/mkfifo3 37 38# Fixed in r288044. 39 40dir=/tmp 41odir=`pwd` 42cd $dir 43sed '1,/^EOF/d' < $odir/$0 > $dir/mkfifo3.c 44mycc -o mkfifo3 -Wall -Wextra -O0 -g mkfifo3.c || exit 1 45rm -f mkfifo3.c 46cd $odir 47 48fifo=/tmp/mkfifo3.fifo 49trap "rm -f $fifo /tmp/mkfifo3" EXIT INT 50 51/tmp/mkfifo3 & 52 53for i in `jot 12`; do 54 pgrep -q mkfifo3 || break 55 sleep 10 56done 57s=0 58if pgrep -q mkfifo3; then 59 s=1 60 pgrep mkfifo3 | xargs ps -lp 61 pkill mkfifo3 62fi 63wait 64 65exit $s 66EOF 67#include <sys/param.h> 68#include <sys/stat.h> 69#include <sys/wait.h> 70 71#include <err.h> 72#include <errno.h> 73#include <fcntl.h> 74#include <signal.h> 75#include <stdio.h> 76#include <stdlib.h> 77#include <unistd.h> 78 79#define ATIME 1 80#define LOOPS 100000 81 82char file[] = "/tmp/mkfifo3.fifo"; 83 84static void 85hand(int i __unused) { /* handler */ 86} 87 88int 89main(void) 90{ 91 pid_t pid; 92 struct sigaction sa; 93 int fd, i, status; 94 95 sa.sa_handler = hand; 96 sigemptyset(&sa.sa_mask); 97 sa.sa_flags = 0; 98 if (sigaction(SIGALRM, &sa, NULL) == -1) 99 err(1, "sigaction"); 100 101 if (unlink(file) == -1) 102 if (errno != ENOENT) 103 err(1, "unlink(%s)", file); 104 if (mkfifo(file, 0640) == -1) 105 err(1, "mkfifo(%s)", file); 106 107 for (i = 0; i < LOOPS; i++) { 108 if ((pid = fork()) == 0) { 109 ualarm(ATIME, 0); 110 do { 111 if((fd = open(file, O_RDONLY)) == -1) 112 if (errno != EINTR) 113 err(1, "open(%s, O_RDONLY @ %d)", 114 file, i); 115 } while (fd == -1); 116 if (close(fd) == -1) 117 err(1, "close() in child"); 118 alarm(0); 119 _exit(0); 120 } 121 ualarm(ATIME, 0); 122 do { 123 if ((fd = open(file, O_WRONLY)) == -1) 124 if (errno != EINTR) 125 err(1, "open(%s, O_WRONLY @ %d)", 126 file, i); 127 } while (fd == -1); 128 if (close(fd) == -1) 129 err(1, "close() in parent"); 130 alarm(0); 131 if (waitpid(pid, &status, 0) == -1) 132 err(1, "wait"); 133 } 134 135 if (unlink(file) == -1) 136 err(1, "unlink(%s)", file); 137 138 return (0); 139} 140