Date: Sun, 9 Feb 2020 12:29:13 +0000 (UTC) From: Peter Holm <pho@FreeBSD.org> To: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: svn commit: r357699 - user/pho/stress2/misc Message-ID: <202002091229.019CTDJj018543@repo.freebsd.org>
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Author: pho Date: Sun Feb 9 12:29:13 2020 New Revision: 357699 URL: https://svnweb.freebsd.org/changeset/base/357699 Log: Added a tmpfs test scenario. Added: user/pho/stress2/misc/tmpfs22.sh (contents, props changed) Added: user/pho/stress2/misc/tmpfs22.sh ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ user/pho/stress2/misc/tmpfs22.sh Sun Feb 9 12:29:13 2020 (r357699) @@ -0,0 +1,120 @@ +#!/bin/sh + +# +# SPDX-License-Identifier: BSD-2-Clause-FreeBSD +# +# Copyright (c) 2020 Peter Holm +# +# 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. +# +# $FreeBSD$ +# + +# A tmpfs "nomtime" mount option test. + +# kib@ wrote: +# A test program should do something along the lines: +# 1. open tmpfs file, ftruncate it, mmap +# 2. write to the mmaped file area periodically, for long time +# e.g. 1 write in 10 secs, for 120 secs +# 3. the mtime of the file should be the same as after the truncation +# if the nomtime flag is set. Otherwise, it should be around +-30 +# secs of the last write to the area. +# +# Really the current (unpatched) situation is some not well defined +# mix between nomtime and its absence. + +. ../default.cfg + +odir=`pwd` +cd /tmp +sed '1,/^EOF/d' < $odir/$0 > tmpfs22.c +mycc -o tmpfs22 -Wall -Wextra -O2 -g tmpfs22.c || exit 1 +rm -f tmpfs22.c +cd $odir + +mount | grep "$mntpoint" | grep -q tmpfs && umount $mntpoint +mount -o size=2g,nomtime -t tmpfs tmpfs $mntpoint || exit 1 + +(cd $mntpoint; /tmp/tmpfs22); s=$? + +for i in `jot 6`; do + umount $mntpoint && break + sleep 2 +done +rm -f /tmp/tmpfs22 +exit $s + +EOF +#include <sys/types.h> +#include <sys/mman.h> +#include <sys/stat.h> + +#include <err.h> +#include <errno.h> +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <fcntl.h> + +static char *file = "test"; + +int +main(void) +{ + struct stat st1, st2; + size_t len; + int fd, i, s; + char *p; + + if ((fd = open(file, O_RDWR | O_CREAT, 0644)) == -1) + err(1, "open(%s)", file); + len = 2LL * 1024 * 1024; + if (ftruncate(fd, len) == -1) + err(1, "ftruncate"); + if ((p = mmap(NULL, len, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0)) == + MAP_FAILED) { + if (errno == ENOMEM) + return (1); + err(1, "mmap()"); + } + if (fstat(fd, &st1) == -1) + err(1, "fstat 1"); + + + for (i = 0; i < 12; i++) { + sleep(10); + p[arc4random() % len] = 1; + } + if (fstat(fd, &st2) == -1) + err(1, "fstat 2"); + s = 0; + if (st1.st_mtime != st2.st_mtime) { + fprintf(stderr, "mtime differs: %ld %ld\n", + (long)st1.st_mtime, (long)st2.st_mtime); + s=1; + } + munmap(p, len); + close(fd); + + return (s); +}
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