Date: Wed, 19 Apr 2017 09:01:04 +0000 (UTC) From: Peter Holm <pho@FreeBSD.org> To: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: svn commit: r317127 - user/pho/stress2/misc Message-ID: <201704190901.v3J914Di093300@repo.freebsd.org>
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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); +}
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