svn commit: r317127 - user/pho/stress2/misc

[Peter Holm]

Author: pho
Date: Wed Apr 19 09:01:04 2017
New Revision: 317127
URL: https://svnweb.freebsd.org/changeset/base/317127

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

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

Added: user/pho/stress2/misc/nfsdelegation.sh
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ user/pho/stress2/misc/nfsdelegation.sh	Wed Apr 19 09:01:04 2017	(r317127)
@@ -0,0 +1,170 @@
+#!/bin/sh
+
+#
+# Copyright (c) 2017 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.
+#
+# $FreeBSD$
+#
+
+# Test nfsv4 delegations. Scenario suggestion by kib.
+# "(nfsdelegation), uid 0, was killed: text file modification" seen.
+# Fixed by r316745
+
+[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
+
+. ../default.cfg
+
+[ -z "$nfs_export" ] && exit 0
+ping -c 2 `echo $nfs_export | sed 's/:.*//'` > /dev/null 2>&1 ||
+    exit 0
+
+here=`pwd`
+cd /tmp
+sed '1,/^EOF/d' < $here/$0 > nfsdelegation.c
+mycc -o nfsdelegation -Wall -Wextra -O0 nfsdelegation.c || exit 1
+rm -f nfsdelegation.c
+
+[ `sysctl -n sysctl vfs.timestamp_precision` -ne 3 ] &&
+    echo "vfs.timestamp_precision must be set to 3"
+[ `sysctl -n vfs.nfsd.issue_delegations` -eq 0 ] &&
+    { echo "vfs.nfsd.issue_delegations is not enabled"; exit 0; }
+pgrep -q nfscbd || { echo "nfscbd is not running"; exit 0; }
+
+mount | grep "$mntpoint" | grep -q nfs && umount $mntpoint
+opt="-o nocto"
+opt="$opt -o nolockd -o nfsv4"
+mount $opt $nfs_export $mntpoint || exit 1
+sleep .2
+
+wdir=$mntpoint/`hostname`/nfsdelegation
+mkdir -p $wdir || exit 1
+
+delegs=0
+s=0
+(cd $wdir; /tmp/nfsdelegation) &
+while kill -0 $! 2>/dev/null; do
+	r=`nfsstat -ec | grep -A1 Delegs | tail -1 | awk '{print $5}'`
+	[ $r -gt $delegs ] && { delegs=$r; break; }
+done
+wait
+[ $delegs -eq 0 ] && { echo "No delegations detected"; s=2; }
+
+rm -rf $wdir
+umount $mntpoint
+while mount | grep "$mntpoint " | grep -q nfs; do
+	umount -f $mntpoint
+done
+tail -3 /var/log/messages | grep -m1 nfsdelegation: && s=2
+exit $s
+EOF
+#include <sys/param.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <sys/wait.h>
+
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#define LOOPS 100
+#define INPUTFILE "/bin/sleep"
+#define PARALLEL 3
+
+static volatile u_int *share;
+
+static int
+tmmap(int idx)
+{
+	struct stat statbuf;
+	pid_t epid, pid;
+	int i;
+	int fdout;
+	char *cmdline[3], *dst, file[128], help[80];
+
+	pid = getpid();
+	cmdline[1] = ".01";
+	cmdline[2] = 0;
+	for (i = 0; i < LOOPS; i++) {
+		sprintf(file,"nfsdelegation.p%05d.%05d", pid, i);
+		cmdline[0] = file;
+
+		snprintf(help, sizeof(help), "cp %s %s; chmod 777 %s", INPUTFILE, file, file);
+		system(help);
+		share[idx] = 0;
+		if ((epid = fork()) == 0) {
+			alarm(60);
+			while (share[idx] == 0)
+				usleep(100);
+			if (execve(cmdline[0], cmdline, NULL) == -1)
+				err(1, "execve");
+		}
+
+		if ((fdout = open(file, O_RDWR)) < 0)
+			err(1, "open(%s)", file);
+		if (fstat(fdout, &statbuf) < 0)
+			err(1, "fstat error");
+
+		if ((dst = mmap(0, statbuf.st_size, PROT_READ | PROT_WRITE | 
+		    MAP_PRIVATE, MAP_SHARED, fdout, 0)) == (caddr_t) - 1)
+			err(1, "mmap error for output");
+
+		dst[statbuf.st_size] = 1;
+
+		close(fdout);
+		if (munmap(dst, statbuf.st_size) == -1)
+			err(1, "munmap");
+		share[idx] = 1;
+		if (waitpid(epid, NULL, 0) != epid)
+			err(1, "waitpid(%d)", epid);
+	}
+
+	_exit(0);
+}
+
+int
+main(void)
+{
+	size_t len;
+        int i;
+
+	len = PAGE_SIZE;
+	if ((share = mmap(NULL, len, PROT_READ | PROT_WRITE,
+	    MAP_ANON | MAP_SHARED, -1, 0)) == MAP_FAILED)
+		err(1, "mmap");
+	for (i = 0; i < PARALLEL; i++) {
+		if (fork() == 0)
+			tmmap(i);
+	}
+
+	for (i = 0; i < PARALLEL; i++) {
+		wait(NULL);
+	}
+
+	return (0);
+}