122 lines
3.4 KiB
Bash
Executable File
122 lines
3.4 KiB
Bash
Executable File
#!/bin/sh
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#
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# SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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#
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# Copyright (c) 2021 Peter Holm <pho@FreeBSD.org>
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# ftruncate+mmap+fsync fails for small maps
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# https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=225586
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# Original test scenario by tris_vern@hotmail.com
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# Fixed in r328773:
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# On pageout, in vnode generic pager, for partially dirty page, only
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# clear dirty bits for completely invalid blocks.
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. ../default.cfg
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cat > /tmp/mmap33.c <<EOF
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#include <sys/mman.h>
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#include <err.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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int
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main (int argc, char *argv[])
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{
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size_t i, size1, size2;
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int fd;
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char *data;
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char *filename;
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char pattern = 0x01;
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if (argc != 4) {
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fprintf(stderr, "Usage: %s filename size1 size2\n", argv[0]);
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exit(1);
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}
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filename = argv[1];
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size1 = atoi(argv[2]);
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size2 = atoi(argv[3]);
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fd = open(filename, O_RDWR | O_TRUNC | O_CREAT, 0644);
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for (i = 0; i < size1; i++)
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write(fd, &pattern, 1);
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close(fd);
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fd = open(filename, O_RDWR, 0644);
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if (fd == -1)
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err(1, "open(%s)", filename);
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if (ftruncate(fd, size2) == -1)
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err(1, "ftruncate()");
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data = mmap(NULL, size2, PROT_READ|PROT_WRITE,MAP_SHARED, fd, 0);
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if (data == MAP_FAILED)
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err(1, "mmap()");
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memset(data, 0xFF, size2);
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if (munmap(data, size2) == -1)
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err(1, "munmap");
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close(fd);
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return (0);
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}
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EOF
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cc -o /tmp/mmap33 -Wall -Wextra -O2 -g /tmp/mmap33.c || exit 1
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rm /tmp/mmap33.c
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set -e
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mount | grep "on $mntpoint " | grep -q /dev/md && umount -f $mntpoint
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[ -c /dev/md$mdstart ] && mdconfig -d -u $mdstart
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mdconfig -a -t swap -s 2g -u $mdstart
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bsdlabel -w md$mdstart auto
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newfs $newfs_flags -n md${mdstart}$part > /dev/null
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mount /dev/md${mdstart}$part $mntpoint
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set +e
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file=file
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odir=`pwd`
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cd $mntpoint
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/tmp/mmap33 $file 1024 511
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s=$?
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sum1=`md5 < $mntpoint/$file`
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[ -f mmap33.core -a $s -eq 0 ] &&
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{ ls -l mmap33.core; mv mmap33.core /tmp; s=1; }
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cd $odir
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umount $mntpoint
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mount /dev/md${mdstart}$part $mntpoint
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# This fails for truncate size < 512
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sum2=`md5 < $mntpoint/$file`
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[ $sum1 = $sum2 ] ||
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{ s=2; echo "md5 fingerprint differs."; }
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umount $mntpoint
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mdconfig -d -u $mdstart
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rm /tmp/mmap33
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exit $s
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