svn commit: r288058 - user/pho/stress2/misc

[Peter Holm]

Author: pho
Date: Mon Sep 21 08:44:23 2015
New Revision: 288058
URL: https://svnweb.freebsd.org/changeset/base/288058

Log:
  Added a regression test.
  
  PR:		203162
  In collaboration with:	 kib
  Sponsored by:	EMC / Isilon storage division

Added:
  user/pho/stress2/misc/mkfifo3.sh   (contents, props changed)

Added: user/pho/stress2/misc/mkfifo3.sh
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ user/pho/stress2/misc/mkfifo3.sh	Mon Sep 21 08:44:23 2015	(r288058)
@@ -0,0 +1,140 @@
+#!/bin/sh
+
+#
+# Copyright (c) 2015 EMC Corp.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+# $FreeBSD$
+#
+
+. ../default.cfg
+
+# Regression test for
+# https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=203162
+
+# FAIL
+# 1001 82102   907   0  20  0 6484 2480 wait   S+    0  0:00,01 /bin/sh ./mkfifo3.sh
+# 1001 82113 82102   0  52  0 3832 1604 fifoow I+    0  0:03,91 /tmp/mkfifo3
+
+# Fixed in r288044.
+
+dir=/tmp
+odir=`pwd`
+cd $dir
+sed '1,/^EOF/d' < $odir/$0 > $dir/mkfifo3.c
+mycc -o mkfifo3 -Wall -Wextra -O0 -g mkfifo3.c || exit 1
+rm -f mkfifo3.c
+cd $odir
+
+fifo=/tmp/mkfifo3.fifo
+trap "rm -f $fifo /tmp/mkfifo3" EXIT SIGINT
+
+/tmp/mkfifo3 &
+
+for i in `jot 12`; do
+	pgrep -q mkfifo3 || break
+	sleep 10
+done
+if pgrep -q mkfifo3; then
+	echo FAIL
+	ps -l | grep -v grep | grep mkfifo3
+	pkill mkfifo3
+fi
+wait
+
+exit $s
+EOF
+#include <sys/param.h>
+#include <sys/stat.h>
+#include <sys/wait.h>
+
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#define ATIME 1
+#define LOOPS 100000
+
+char file[] = "/tmp/mkfifo3.fifo";
+
+static void
+hand(int i __unused) {	/* handler */
+}
+
+int
+main(void)
+{
+	pid_t pid;
+	struct sigaction sa;
+	int fd, i, status;
+
+	sa.sa_handler = hand;
+	sigemptyset(&sa.sa_mask);
+	sa.sa_flags = 0;
+	if (sigaction(SIGALRM, &sa, NULL) == -1)
+		err(1, "sigaction");
+
+	if (unlink(file) == -1)
+		if (errno != ENOENT)
+			err(1, "unlink(%s)", file);
+	if (mkfifo(file, 0640) == -1)
+		err(1, "mkfifo(%s)", file);
+
+	for (i = 0; i < LOOPS; i++) {
+		if ((pid = fork()) == 0) {
+			ualarm(ATIME, 0);
+			do {
+				if((fd = open(file, O_RDONLY)) == -1)
+					if (errno != EINTR)
+						err(1, "open(%s, O_RDONLY @ %d)",
+						    file, i);
+			} while (fd == -1);
+			if (close(fd) == -1)
+				err(1, "close() in child");
+			alarm(0);
+			_exit(0);
+		}
+		ualarm(ATIME, 0);
+		do {
+			if ((fd = open(file, O_WRONLY)) == -1)
+				if (errno != EINTR)
+					err(1, "open(%s, O_WRONLY @ %d)",
+					    file, i);
+		} while (fd == -1);
+		if (close(fd) == -1)
+			err(1, "close() in parent");
+		alarm(0);
+		if (waitpid(pid, &status, 0) == -1)
+			err(1, "wait");
+	}
+
+	if (unlink(file) == -1)
+		err(1, "unlink(%s)", file);
+
+	return (0);
+}