117 lines
2.9 KiB
Bash
Executable File
117 lines
2.9 KiB
Bash
Executable File
#!/bin/sh
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#
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# Copyright (c) 2010 Peter Holm <pho@FreeBSD.org>
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# All rights reserved.
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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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# Test overcommit of the file system capacity
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# Causes panic: 1 vncache entries remaining
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# Fixed in r202529
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# Scenario by kib@
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[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
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. ../default.cfg
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here=`pwd`
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cd /tmp
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sed '1,/^EOF/d' < $here/$0 > mmap4.c
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mycc -o mmap4 -Wall -O2 mmap4.c
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rm -f mmap4.c
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mount | grep -q "$mntpoint" && umount $mntpoint
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mdconfig -l | grep -q $mdstart && mdconfig -d -u $mdstart
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mdconfig -a -t swap -s 40m -u $mdstart
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bsdlabel -w md$mdstart auto
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newfs $newfs_flags md${mdstart}$part > /dev/null
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mount /dev/md${mdstart}$part $mntpoint
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/tmp/mmap4 /$mntpoint/file
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cd $here
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rm -f /tmp/mmap4
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while mount | grep -q $mntpoint; do
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sync;sync;sync
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sleep 1
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umount $mntpoint
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done
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mdconfig -d -u $mdstart
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exit 0
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EOF
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#include <sys/types.h>
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#include <err.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/mman.h>
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#include <sys/param.h>
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#include <string.h>
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#include <unistd.h>
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#include <errno.h>
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#define STARTADDR 0x0U
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#define ADRSPACE 0x06400000U /* 100 Mb */
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int
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main(int argc, char **argv)
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{
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int fd, ps;
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void *p;
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size_t len;
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volatile char *c;
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char *path;
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p = (void *)STARTADDR;
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len = ADRSPACE;
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path = argv[1];
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if ((fd = open(path, O_CREAT | O_TRUNC | O_RDWR, 0622)) == -1)
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err(1,"open()");
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if (ftruncate(fd, len) == -1)
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err(1, "ftruncate");
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if ((p = mmap(p, len, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0)) ==
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MAP_FAILED) {
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if (errno == ENOMEM)
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return (1);
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err(1, "mmap(1)");
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}
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c = p;
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ps = getpagesize();
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for (c = p; (void *)c < p + len; c += ps) {
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*c = 1;
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}
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close(fd);
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return (0);
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}
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