140 lines
3.3 KiB
Bash
Executable File
140 lines
3.3 KiB
Bash
Executable File
#!/bin/sh
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#
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# Copyright (c) 2015 EMC Corp.
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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. ../default.cfg
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# Regression test for
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# https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=203162
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# FAIL
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# 1001 82102 907 0 20 0 6484 2480 wait S+ 0 0:00,01 /bin/sh ./mkfifo3.sh
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# 1001 82113 82102 0 52 0 3832 1604 fifoow I+ 0 0:03,91 /tmp/mkfifo3
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# Fixed in r288044.
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dir=/tmp
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odir=`pwd`
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cd $dir
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sed '1,/^EOF/d' < $odir/$0 > $dir/mkfifo3.c
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mycc -o mkfifo3 -Wall -Wextra -O0 -g mkfifo3.c || exit 1
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rm -f mkfifo3.c
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cd $odir
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fifo=/tmp/mkfifo3.fifo
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trap "rm -f $fifo /tmp/mkfifo3" EXIT INT
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/tmp/mkfifo3 &
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for i in `jot 12`; do
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pgrep -q mkfifo3 || break
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sleep 10
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done
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s=0
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if pgrep -q mkfifo3; then
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s=1
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pgrep mkfifo3 | xargs ps -lp
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pkill mkfifo3
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fi
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wait
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exit $s
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EOF
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <sys/wait.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#define ATIME 1
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#define LOOPS 100000
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char file[] = "/tmp/mkfifo3.fifo";
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static void
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hand(int i __unused) { /* handler */
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}
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int
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main(void)
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{
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pid_t pid;
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struct sigaction sa;
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int fd, i, status;
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sa.sa_handler = hand;
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sigemptyset(&sa.sa_mask);
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sa.sa_flags = 0;
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if (sigaction(SIGALRM, &sa, NULL) == -1)
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err(1, "sigaction");
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if (unlink(file) == -1)
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if (errno != ENOENT)
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err(1, "unlink(%s)", file);
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if (mkfifo(file, 0640) == -1)
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err(1, "mkfifo(%s)", file);
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for (i = 0; i < LOOPS; i++) {
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if ((pid = fork()) == 0) {
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ualarm(ATIME, 0);
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do {
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if((fd = open(file, O_RDONLY)) == -1)
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if (errno != EINTR)
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err(1, "open(%s, O_RDONLY @ %d)",
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file, i);
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} while (fd == -1);
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if (close(fd) == -1)
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err(1, "close() in child");
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alarm(0);
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_exit(0);
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}
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ualarm(ATIME, 0);
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do {
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if ((fd = open(file, O_WRONLY)) == -1)
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if (errno != EINTR)
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err(1, "open(%s, O_WRONLY @ %d)",
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file, i);
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} while (fd == -1);
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if (close(fd) == -1)
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err(1, "close() in parent");
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alarm(0);
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if (waitpid(pid, &status, 0) == -1)
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err(1, "wait");
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}
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if (unlink(file) == -1)
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err(1, "unlink(%s)", file);
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return (0);
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}
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