4 # Copyright (c) 2010 Peter Holm <pho@FreeBSD.org>
7 # Redistribution and use in source and binary forms, with or without
8 # modification, are permitted provided that the following conditions
10 # 1. Redistributions of source code must retain the above copyright
11 # notice, this list of conditions and the following disclaimer.
12 # 2. Redistributions in binary form must reproduce the above copyright
13 # notice, this list of conditions and the following disclaimer in the
14 # documentation and/or other materials provided with the distribution.
16 # THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 # ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 # Test overcommit of the file system capacity
32 # Causes panic: 1 vncache entries remaining
36 [ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
42 sed '1,/^EOF/d' < $here/$0 > mmap4.c
43 cc -o mmap4 -Wall -O2 mmap4.c
46 mount | grep -q "$mntpoint" && umount $mntpoint
47 mdconfig -l | grep -q $mdstart && mdconfig -d -u $mdstart
49 mdconfig -a -t swap -s 40m -u $mdstart
50 bsdlabel -w md${mdstart} auto
52 newfs -U md${mdstart}${part} > /dev/null
53 mount /dev/md${mdstart}${part} $mntpoint
55 /tmp/mmap4 /$mntpoint/file
62 while mount | grep -q $mntpoint; do
68 mdconfig -d -u $mdstart
71 #include <sys/types.h>
78 #include <sys/param.h>
83 #define STARTADDR 0x0U
84 #define ADRSPACE 0x06400000U /* 100 Mb */
87 main(int argc, char **argv)
94 p = (void *)STARTADDR;
98 if ((fd = open(path, O_CREAT | O_TRUNC | O_RDWR, 0622)) == -1)
100 if (ftruncate(fd, len) == -1)
102 if ((p = mmap(p, len, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0)) ==
111 for (c = p; (void *)c < p + len; c += ps) {