svn commit: r253982 - user/pho/stress2/misc

[Peter Holm]

Author: pho
Date: Tue Aug  6 06:04:55 2013
New Revision: 253982
URL: http://svnweb.freebsd.org/changeset/base/253982

Log:
  tmpfs(5) regression test added.
  
  Sponsored by:	EMC / Isilon storage division

Added:
  user/pho/stress2/misc/tmpfs10.sh   (contents, props changed)

Added: user/pho/stress2/misc/tmpfs10.sh
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ user/pho/stress2/misc/tmpfs10.sh	Tue Aug  6 06:04:55 2013	(r253982)
@@ -0,0 +1,157 @@
+#!/bin/sh
+
+#
+# Copyright (c) 2013 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.
+#
+# $FreeBSD$
+#
+
+# tmpfs(5) name lookup problem seen:
+
+# $ ./tmpfs10.sh 
+# tmpfs10: unlink(p01193.14729) at loop #2: No such file or directory
+# unlink(p01193.14729) succeeded at call #2.
+# tmpfs10: unlink(p01186.14409) at loop #2: No such file or directory
+# unlink(p01186.14409) succeeded at call #2.
+# FAIL
+# $ 
+
+# Fixed in r253967.
+
+[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
+
+. ../default.cfg
+
+odir=`pwd`
+cd /tmp
+sed '1,/^EOF/d' < $odir/$0 > tmpfs10.c
+cc -o tmpfs10 -Wall -Wextra -O2 -g tmpfs10.c || exit 1
+rm -f tmpfs10.c
+cd $odir
+
+mount | grep -q "on $mntpoint " && umount $mntpoint
+mount -t tmpfs tmpfs $mntpoint
+cd $mntpoint
+/tmp/tmpfs10 ||
+{ find $mntpoint ! -type d | xargs ls -il; echo FAIL; }
+cd $odir
+umount $mntpoint
+rm -f /tmp/tmpfs10
+exit 0
+EOF
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/param.h>
+#include <sys/stat.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+static int loop;
+int error;
+
+#define PARALLEL 20
+#define SIZE 16000
+
+void
+test2(void)
+{
+	int i, j, k;
+	pid_t pid;
+	char file[128], dir[128];
+
+	loop++;
+	pid = getpid();
+	sprintf(dir,"%s.%05d", getprogname(), pid);
+	if (mkdir(dir, 0770) < 0)
+		err(1, "mkdir(%s), %s:%d", dir, __FILE__, __LINE__);
+
+	if (chdir(dir) == -1)
+		err(1, "chdir(%s), %s:%d", dir, __FILE__, __LINE__);
+
+	for (j = 0; j < SIZE; j++) {
+		sprintf(file,"p%05d.%05d", pid, j);
+		if (symlink("/tmp/not/there", file) == -1) {
+			if (errno != EINTR) {
+				warn("symlink(%s). %s.%d", file, __FILE__, __LINE__);
+				break;
+			}
+		}
+	}
+
+	for (i = --j; i >= 0; i--) {
+		sprintf(file,"p%05d.%05d", pid, i);
+		if (unlink(file) == -1) {
+			warn("unlink(%s) at loop #%d", file, loop);
+			error++;
+			for (k = 0; k < 10; k++) {
+				usleep(10000);
+				if (unlink(file) == 0) {
+					fprintf(stderr,
+					    "unlink(%s) succeeded at call #%d.\n",
+					    file, k + 2);
+					break;
+				}
+			}
+		}
+	}
+
+	(void)chdir("..");
+	if (rmdir(dir) == -1)
+		warn("rmdir(%s), %s:%d", dir, __FILE__, __LINE__);
+
+}
+
+void
+test(void)
+{
+	sleep(arc4random() % 3 + 1);
+
+	test2();
+	if (error == 0)
+		test2();
+
+	_exit(error);
+}
+
+int
+main(void)
+{
+	int e, i, status;
+
+	for (i = 0; i < PARALLEL; i++)
+		if (fork() == 0)
+			test();
+
+	e = 0;
+	for (i = 0; i < PARALLEL; i++) {
+		wait(&status);
+		e += WEXITSTATUS(status);
+	}
+
+	return (e);
+}