svn commit: r327868 - user/pho/stress2/misc

[Peter Holm]

Author: pho
Date: Fri Jan 12 09:59:08 2018
New Revision: 327868
URL: https://svnweb.freebsd.org/changeset/base/327868

Log:
  Added a regression test.
  
  Sponsored by:	Dell EMC Isilon

Added:
  user/pho/stress2/misc/symlink4.sh   (contents, props changed)

Added: user/pho/stress2/misc/symlink4.sh
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ user/pho/stress2/misc/symlink4.sh	Fri Jan 12 09:59:08 2018	(r327868)
@@ -0,0 +1,127 @@
+#!/bin/sh
+
+#
+# Copyright (c) 2018 Dell EMC Isilon
+# 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.
+#
+# $FreeBSD$
+#
+
+# Testing with links longer than 120 characters, which is not stored in the
+# inode but will be placed in its own data fragment.
+
+# "panic: softdep_deallocate_dependencies: dangling deps" seen with SU:
+# https://people.freebsd.org/~pho/stress/log/symlink4.txt
+# Fixed by r327821
+
+[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
+
+. ../default.cfg
+
+dir=/tmp
+odir=`pwd`
+cd $dir
+sed '1,/^EOF/d' < $odir/$0 > $dir/symlink4.c
+mycc -o symlink4 -Wall -Wextra -O0 -g symlink4.c || exit 1
+rm -f symlink4.c
+cd $odir
+
+set -e
+mount | grep "on $mntpoint " | grep -q /dev/md && umount -f $mntpoint
+[ -c /dev/md$mdstart ] &&  mdconfig -d -u $mdstart
+mdconfig -a -t swap -s 1g -u $mdstart
+bsdlabel -w md$mdstart auto
+newfs $newfs_flags md${mdstart}$part > /dev/null
+mount /dev/md${mdstart}$part $mntpoint
+set +e
+
+cd $mntpoint
+i=`df -ik $mntpoint | tail -1 | awk '{printf "%d\n", ($7 - 500)/2}'`
+/tmp/symlink4 $i
+s=$?
+[ -f symlink4.core -a $s -eq 0 ] &&
+    { ls -l symlink4.core; mv symlink4.core /tmp; s=1; }
+cd $odir
+
+for i in `jot 6`; do
+	mount | grep -q "on $mntpoint " || break
+	umount $mntpoint && break || sleep 10
+done
+[ $i -eq 6 ] && exit 1
+mdconfig -d -u $mdstart
+rm -rf $dir/symlink4
+exit $s
+
+EOF
+#include <sys/types.h>
+#include <sys/mount.h>
+#include <sys/param.h>
+#include <sys/stat.h>
+#include <sys/sysctl.h>
+
+#include <unistd.h>
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+int
+main(int argc, char **argv)
+{
+	int64_t size;
+	pid_t pid;
+	int i, j;
+	char file[128], link[256];
+
+	if (argc != 2)
+		errx(1, "Usage: %s <links>", argv[0]);
+	size = atol(argv[1]);
+	strcpy(link, "/mnt/not/there/");
+	for (i = 15; i < 200; i++)
+		link[i] = '1';
+	link[++i] = 0;
+
+	pid = getpid();
+	for (j = 0; j < size; j++) {
+		sprintf(file,"p%05d.%05d", pid, j);
+		if (symlink(link, file) == -1) {
+			if (errno != EINTR) {
+				warn("symlink(%s, %s)", link, file);
+				printf("break out at %d, errno %d\n", j,
+				    errno);
+				break;
+			}
+		}
+	}
+
+	for (i = --j; i >= 0; i--) {
+		sprintf(file,"p%05d.%05d", pid, i);
+		if (unlink(file) == -1)
+			err(3, "unlink(%s)", file);
+
+	}
+	return (0);
+}